Difference between revisions of "Module:Citation/CS1"

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m (is_parameter_ext_wikilink() fix;)
(Synch from sandbox;)
Line 1: Line 1:
  
local z = {
+
local cs1 ={};
error_categories = {}; -- for categorizing citations that contain errors
 
error_ids = {};
 
message_tail = {};
 
maintenance_cats = {}; -- for categorizing citations that aren't erroneous per se, but could use a little work
 
properties_cats = {}; -- for categorizing citations based on certain properties, language of source for instance
 
}
 
  
 
--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
 
--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
 
]]
 
]]
local dates, year_date_check -- functions in Module:Citation/CS1/Date_validation
 
  
local cfg = {}; -- table of configuration tables that are defined in Module:Citation/CS1/Configuration
+
local dates, year_date_check, reformat_dates -- functions in Module:Citation/CS1/Date_validation
local whitelist = {}; -- table of tables listing valid template parameter names; defined in Module:Citation/CS1/Whitelist
 
  
--[[--------------------------< I S _ S E T >------------------------------------------------------------------
+
local is_set, in_array, substitute, error_comment, set_error, select_one, -- functions in Module:Citation/CS1/Utilities
 +
add_maint_cat, wrap_style, safe_for_italics, remove_wiki_link;
  
Returns true if argument is set; false otherwise. Argument is 'set' when it exists (not nil) or when it is not an empty string.
+
local z ={}; -- tables in Module:Citation/CS1/Utilities
This function is global because it is called from both this module and from Date validation
 
  
]]
+
local extract_ids, build_id_list, is_embargoed; -- functions in Module:Citation/CS1/Identifiers
function is_set( var )
+
 
return not (var == nil or var == '');
+
local make_coins_title, get_coins_pages, COinS; -- functions in Module:Citation/CS1/COinS
end
+
 
 +
local cfg = {}; -- table of configuration tables that are defined in Module:Citation/CS1/Configuration
 +
local whitelist = {}; -- table of tables listing valid template parameter names; defined in Module:Citation/CS1/Whitelist
  
 
--[[--------------------------< F I R S T _ S E T >------------------------------------------------------------
 
--[[--------------------------< F I R S T _ S E T >------------------------------------------------------------
Line 46: Line 40:
 
end
 
end
  
--[[--------------------------< I N _ A R R A Y >--------------------------------------------------------------
+
--[[--------------------------< A D D _ P R O P _ C A T >--------------------------------------------------------
  
Whether needle is in haystack
+
Adds a category to z.properties_cats using names from the configuration file with additional text if any.
  
 
]]
 
]]
  
local function in_array( needle, haystack )
+
local added_prop_cats = {} -- list of property categories that have been added to z.properties_cats
if needle == nil then
+
local function add_prop_cat (key, arguments)
return false;
+
if not added_prop_cats [key] then
 +
added_prop_cats [key] = true; -- note that we've added this category
 +
table.insert( z.properties_cats, substitute (cfg.prop_cats [key], arguments)); -- make name then add to table
 
end
 
end
for n,v in ipairs( haystack ) do
 
if v == needle then
 
return n;
 
end
 
end
 
return false;
 
 
end
 
end
  
--[[--------------------------< S U B S T I T U T E >----------------------------------------------------------
+
--[[--------------------------< A D D _ V A N C _ E R R O R >----------------------------------------------------
  
Populates numbered arguments in a message string using an argument table.
+
Adds a single Vancouver system error message to the template's output regardless of how many error actually exist.
 +
To prevent duplication, added_vanc_errs is nil until an error message is emitted.
  
 
]]
 
]]
  
local function substitute( msg, args )
+
local added_vanc_errs; -- flag so we only emit one Vancouver error / category
return args and mw.message.newRawMessage( msg, args ):plain() or msg;
+
local function add_vanc_error ()
 +
if not added_vanc_errs then
 +
added_vanc_errs = true; -- note that we've added this category
 +
table.insert( z.message_tail, { set_error( 'vancouver', {}, true ) } );
 +
end
 
end
 
end
  
--[[--------------------------< E R R O R _ C O M M E N T >----------------------------------------------------
 
  
Wraps error messages with css markup according to the state of hidden.
+
--[[--------------------------< I S _ S C H E M E >------------------------------------------------------------
 +
 
 +
does this thing that purports to be a uri scheme seem to be a valid scheme?  The scheme is checked to see if it
 +
is in agreement with http://tools.ietf.org/html/std66#section-3.1 which says:
 +
Scheme names consist of a sequence of characters beginning with a
 +
  letter and followed by any combination of letters, digits, plus
 +
  ("+"), period ("."), or hyphen ("-").
 +
 
 +
returns true if it does, else false
  
 
]]
 
]]
local function error_comment( content, hidden )
+
 
return substitute( hidden and cfg.presentation['hidden-error'] or cfg.presentation['visible-error'], content );
+
local function is_scheme (scheme)
 +
return scheme and scheme:match ('^%a[%a%d%+%.%-]*:'); -- true if scheme is set and matches the pattern
 
end
 
end
  
--[[--------------------------< S E T _ E R R O R >--------------------------------------------------------------
 
  
Sets an error condition and returns the appropriate error message.  The actual placement of the error message in the output is
+
--[=[-------------------------< I S _ D O M A I N _ N A M E >--------------------------------------------------
the responsibility of the calling function.
 
  
]]
+
Does this thing that purports to be a domain name seem to be a valid domain name?
local function set_error( error_id, arguments, raw, prefix, suffix )
 
local error_state = cfg.error_conditions[ error_id ];
 
 
prefix = prefix or "";
 
suffix = suffix or "";
 
 
if error_state == nil then
 
error( cfg.messages['undefined_error'] );
 
elseif is_set( error_state.category ) then
 
table.insert( z.error_categories, error_state.category );
 
end
 
 
local message = substitute( error_state.message, arguments );
 
 
message = message .. " ([[" .. cfg.messages['help page link'] ..
 
"#" .. error_state.anchor .. "|" ..
 
cfg.messages['help page label'] .. "]])";
 
 
z.error_ids[ error_id ] = true;
 
if in_array( error_id, { 'bare_url_missing_title', 'trans_missing_title' } )
 
and z.error_ids['citation_missing_title'] then
 
return '', false;
 
end
 
 
message = table.concat({ prefix, message, suffix });
 
 
if raw == true then
 
return message, error_state.hidden;
 
end
 
 
return error_comment( message, error_state.hidden );
 
end
 
  
--[[--------------------------< A D D _ M A I N T _ C A T >------------------------------------------------------
+
Syntax defined here: http://tools.ietf.org/html/rfc1034#section-3.5
 +
BNF defined here: https://tools.ietf.org/html/rfc4234
 +
Single character names are generally reserved; see https://tools.ietf.org/html/draft-ietf-dnsind-iana-dns-01#page-15;
 +
see also [[Single-letter second-level domain]]
 +
list of tlds: https://www.iana.org/domains/root/db
  
Adds a category to z.maintenance_cats using names from the configuration file with additional text if any.
+
rfc952 (modified by rfc 1123) requires the first and last character of a hostname to be a letter or a digit. Between
To prevent duplication, the added_maint_cats table lists the categories by key that have been added to z.maintenance_cats.
+
the first and last characters the name may use letters, digits, and the hyphen.
  
]]
+
Also allowed are IPv4 addresses. IPv6 not supported
  
local added_maint_cats = {} -- list of maintenance categories that have been added to z.maintenance_cats
+
domain is expected to be stripped of any path so that the last character in the last character of the tld. tld
local function add_maint_cat (key, arguments)
+
is two or more alpha characters.  Any preceding '//' (from splitting a url with a scheme) will be stripped
if not added_maint_cats [key] then
+
here.  Perhaps not necessary but retained incase it is necessary for IPv4 dot decimal.
added_maint_cats [key] = true; -- note that we've added this category
 
table.insert( z.maintenance_cats, substitute (cfg.maint_cats [key], arguments)); -- make name then add to table
 
end
 
end
 
  
--[[--------------------------< A D D _ P R O P _ C A T >--------------------------------------------------------
+
There are several tests:
 +
the first character of the whole domain name including subdomains must be a letter or a digit
 +
single-letter/digit second-level domains in the .org TLD
 +
q, x, and z SL domains in the .com TLD
 +
i and q SL domains in the .net TLD
 +
single-letter SL domains in the ccTLDs (where the ccTLD is two letters)
 +
two-character SL domains in gTLDs (where the gTLD is two or more letters)
 +
three-plus-character SL domains in gTLDs (where the gTLD is two or more letters)
 +
IPv4 dot-decimal address format; TLD not allowed
  
Adds a category to z.properties_cats using names from the configuration file with additional text if any.
+
returns true if domain appears to be a proper name and tld or IPv4 address, else false
  
]]
+
]=]
  
local added_prop_cats = {} -- list of property categories that have been added to z.properties_cats
+
local function is_domain_name (domain)
local function add_prop_cat (key, arguments)
+
if not domain then
if not added_prop_cats [key] then
+
return false; -- if not set, abandon
added_prop_cats [key] = true; -- note that we've added this category
+
end
table.insert( z.properties_cats, substitute (cfg.prop_cats [key], arguments)); -- make name then add to table
+
 +
domain = domain:gsub ('^//', ''); -- strip '//' from domain name if present; done here so we only have to do it once
 +
 +
if not domain:match ('^[%a%d]') then -- first character must be letter or digit
 +
return false;
 +
end
 +
-- Do most common case first
 +
if domain:match ('%f[%a%d][%a%d][%a%d%-]+[%a%d]%.%a%a+$') then     -- three or more character hostname.hostname or hostname.tld
 +
return true;
 +
elseif domain:match ('%f[%a%d][%a%d]%.org$') then -- one character .org hostname
 +
return true;
 +
elseif domain:match ('%f[%a][qxz]%.com$') then -- assigned one character .com hostname (x.com times out 2015-12-10)
 +
return true;
 +
elseif domain:match ('%f[%a][iq]%.net$') then -- assigned one character .net hostname (q.net registered but not active 2015-12-10)
 +
return true;
 +
elseif domain:match ('%f[%a%d][%a%d]%.%a%a$') then -- one character hostname and cctld (2 chars)
 +
return true;
 +
elseif domain:match ('%f[%a%d][%a%d][%a%d]%.%a%a+$') then -- two character hostname and tld
 +
return true;
 +
elseif domain:match ('^%d%d?%d?%.%d%d?%d?%.%d%d?%d?%.%d%d?%d?') then -- IPv4 address
 +
return true;
 +
else
 +
return false;
 
end
 
end
 
end
 
end
  
--[[--------------------------< A D D _ V A N C _ E R R O R >----------------------------------------------------
 
  
Adds a single Vancouver system error message to the template's output regardless of how many error actually exist.
+
--[[--------------------------< I S _ U R L >------------------------------------------------------------------
To prevent duplication, added_vanc_errs is nil until an error message is emitted.
+
 
 +
returns true if the scheme and domain parts of a url appear to be a valid url; else false.
 +
 
 +
This function is the last step in the validation process. This function is separate because there are cases that
 +
are not covered by split_url(), for example is_parameter_ext_wikilink() which is looking for bracketted external
 +
wikilinks.
  
 
]]
 
]]
  
local added_vanc_errs; -- flag so we only emit one Vancouver error / category
+
local function is_url (scheme, domain)
local function add_vanc_error ()
+
if is_set (scheme) then -- if scheme is set check it and domain
if not added_vanc_errs then
+
return is_scheme (scheme) and is_domain_name (domain);
added_vanc_errs = true; -- note that we've added this category
+
else
table.insert( z.message_tail, { set_error( 'vancouver', {}, true ) } );
+
return is_domain_name (domain); -- scheme not set when url is protocol relative
 
end
 
end
 
end
 
end
  
  
--[[--------------------------< I S _ S C H E M E >------------------------------------------------------------
+
--[[--------------------------< S P L I T _ U R L >------------------------------------------------------------
 +
 
 +
Split a url into a scheme, authority indicator, and domain.
 +
If protocol relative url, return nil scheme and domain else return nil for both scheme and domain.
  
does this thing that purports to be a uri scheme seem to be a valid scheme? The scheme is checked to see if it
+
When not protocol relative, get scheme, authority indicator, and domain. If there is an authority indicator (one
is in agreement with http://tools.ietf.org/html/std66#section-3.1 which says:
+
or more '/' characters immediately following the scheme's colon), make sure that there are only 2.
Scheme names consist of a sequence of characters beginning with a
 
  letter and followed by any combination of letters, digits, plus
 
  ("+"), period ("."), or hyphen ("-").
 
  
returns true if it does, else false
+
Strip off any port and path;
  
 
]]
 
]]
  
local function is_scheme (scheme)
+
local function split_url (url_str)
return scheme and scheme:match ('^%a[%a%d%+%.%-]*:'); -- true if scheme is set and matches the pattern
+
local scheme, authority, domain;
end
+
 +
url_str = url_str:gsub ('([%a%d])%.?/.*$', '%1'); -- strip FQDN terminator and path (the capture prevents false replacement of '//')
  
 +
if url_str:match ('^//%S*') then -- if there is what appears to be a protocol relative url
 +
domain = url_str:match ('^//(%S*)')
 +
elseif url_str:match ('%S-:/*%S+') then -- if there is what appears to be a scheme, optional authority indicator, and domain name
 +
scheme, authority, domain = url_str:match ('(%S-:)(/*)(%S+)'); -- extract the scheme, authority indicator, and domain portions
 +
authority = authority:gsub ('//', '', 1); -- replace place 1 pair of '/' with nothing;
 +
if is_set(authority) then -- if anything left (1 or 3+ '/' where authority should be) then
 +
return scheme; -- return scheme only making domain nil which will cause an error message
 +
end
 +
domain = domain:gsub ('(%a):%d+', '%1'); -- strip port number if present
 +
end
 +
 +
return scheme, domain;
 +
end
 +
 +
 +
--[[--------------------------< L I N K _ P A R A M _ O K >---------------------------------------------------
  
--[=[-------------------------< I S _ D O M A I N _ N A M E >--------------------------------------------------
+
checks the content of |title-link=, |series-link=, |author-link= etc for properly formatted content: no wikilinks, no urls
 
 
Does this thing that purports to be a domain name seem to be a valid domain name?
 
  
Syntax defined here: http://tools.ietf.org/html/rfc1034#section-3.5
+
Link parameters are to hold the title of a wikipedia article so none of the WP:TITLESPECIALCHARACTERS are allowed:
BNF defined here: https://tools.ietf.org/html/rfc4234
+
# < > [ ] | { } _
Single character names are generally reserved; see https://tools.ietf.org/html/draft-ietf-dnsind-iana-dns-01#page-15;
+
except the underscore which is used as a space in wiki urls and # which is used for section links
see also [[Single-letter second-level domain]]
 
list of tlds: https://www.iana.org/domains/root/db
 
  
rfc952 (modified by rfc 1123) requires the first and last character of a hostname to be a letter or a digit.  Between
+
returns false when the value contains any of these characters.
the first and last characters the name may use letters, digits, and the hyphen.
 
  
Also allowed are IPv4 addresses. IPv6 not supported
+
When there are no illegal characters, this function returns TRUE if value DOES NOT appear to be a valid url (the
 +
|<param>-link= parameter is ok); else false when value appears to be a valid url (the |<param>-link= parameter is NOT ok).
  
domain is expected to be stripped of any path so that the last character in the last character of the tld.  tld
+
]]
is two or more alpha characters.  Any preceding '//' (from splitting a url with a scheme) will be stripped
 
here.  Perhaps not necessary but retained incase it is necessary for IPv4 dot decimal.
 
  
There are several tests:
+
local function link_param_ok (value)
the first character of the whole domain name including subdomains must be a letter or a digit
+
local scheme, domain;
single-letter/digit second-level domains in the .org TLD
+
if value:find ('[<>%[%]|{}]') then -- if any prohibited characters
q, x, and z SL domains in the .com TLD
+
return false;
i and q SL domains in the .net TLD
+
end
single-letter SL domains in the ccTLDs (where the ccTLD is two letters)
+
 
two-character SL domains in gTLDs (where the gTLD is two or more letters)
+
scheme, domain = split_url (value); -- get scheme or nil and domain or nil from url;
three-plus-character SL domains in gTLDs (where the gTLD is two or more letters)
+
return not is_url (scheme, domain); -- return true if value DOES NOT appear to be a valid url
IPv4 dot-decimal address format; TLD not allowed
+
end
 +
 
 +
--[[--------------------------< L I N K _ T I T L E _ O K >---------------------------------------------------
 +
 
 +
Use link_param_ok() to validate |<param>-link= value and its matching |<title>= value.
 +
 
 +
|<title>= may be wikilinked but not when |<param>-link= has a value.  This function emits an error message when
 +
that condition exists
  
returns true if domain appears to be a proper name and tld or IPv4 address, else false
+
]]
  
]=]
+
local function link_title_ok (link, lorig, title, torig)
 +
local orig;
  
local function is_domain_name (domain)
+
if is_set (link) then -- don't bother if link doesn't have a value
if not domain then
+
if not link_param_ok (link) then -- check |<param>-link= markup
return false; -- if not set, abandon
+
orig = lorig; -- identify the failing link parameter
 +
elseif not link_param_ok (title) then -- check |<title>-link= markup
 +
orig = torig; -- identify the failing link parameter
 +
end
 
end
 
end
+
 
domain = domain:gsub ('^//', ''); -- strip '//' from domain name if present; done here so we only have to do it once
+
if is_set (orig) then
+
table.insert( z.message_tail, { set_error( 'bad_paramlink', orig)}); -- url or wikilink in |title= with |title-link=;
if not domain:match ('^[%a%d]') then -- first character must be letter or digit
 
return false;
 
 
end
 
end
+
end
if domain:match ('%f[%a%d][%a%d]%.org$') then -- one character .org hostname
+
 
return true;
+
 
elseif domain:match ('%f[%a][qxz]%.com$') then -- assigned one character .com hostname (x.com times out 2015-12-10)
+
--[[--------------------------< C H E C K _ U R L >------------------------------------------------------------
return true;
 
elseif domain:match ('%f[%a][iq]%.net$') then -- assigned one character .net hostname (q.net registered but not active 2015-12-10)
 
return true;
 
elseif domain:match ('%f[%a%d][%a%d]%.%a%a$') then -- one character hostname and cctld (2 chars)
 
return true;
 
elseif domain:match ('%f[%a%d][%a%d][%a%d]%.%a%a+$') then -- two character hostname and tld
 
return true;
 
elseif domain:match ('%f[%a%d][%a%d][%a%d%-]+[%a%d]%.%a%a+$') then -- three or more character hostname.hostname or hostname.tld
 
return true;
 
elseif domain:match ('^%d%d?%d?%.%d%d?%d?%.%d%d?%d?%.%d%d?%d?') then -- IPv4 address
 
return true;
 
else
 
return false;
 
end
 
end
 
  
 +
Determines whether a URL string appears to be valid.
  
--[[--------------------------< I S _ U R L >------------------------------------------------------------------
+
First we test for space characters.  If any are found, return false.  Then split the url into scheme and domain
 +
portions, or for protocol relative (//example.com) urls, just the domain.  Use is_url() to validate the two
 +
portions of the url.  If both are valid, or for protocol relative if domain is valid, return true, else false.
  
returns true if the scheme and domain parts of a url appear to be a valid url; else false.
+
Because it is different from a standard url, and because this module used external_link() to make external links
 
+
that work for standard and news: links, we validate newsgroup names hereThe specification for a newsgroup name
This function is the last step in the validation processThis function is separate because there are cases that
+
is at https://tools.ietf.org/html/rfc5536#section-3.1.4
are not covered by split_url(), for example is_parameter_ext_wikilink() which is looking for bracketted external
 
wikilinks.
 
  
 
]]
 
]]
  
local function is_url (scheme, domain)
+
local function check_url( url_str )
if is_set (scheme) then -- if scheme is set check it and domain
+
if nil == url_str:match ("^%S+$") then -- if there are any spaces in |url=value it can't be a proper url
return is_scheme (scheme) and is_domain_name (domain);
+
return false;
else
 
return is_domain_name (domain); -- scheme not set when url is protocol relative
 
 
end
 
end
end
+
local scheme, domain;
  
 +
scheme, domain = split_url (url_str); -- get scheme or nil and domain or nil from url;
 +
 +
if 'news:' == scheme then -- special case for newsgroups
 +
return domain:match('^[%a%d%+%-_]+%.[%a%d%+%-_%.]*[%a%d%+%-_]$');
 +
end
 +
 +
return is_url (scheme, domain); -- return true if value appears to be a valid url
 +
end
  
--[[--------------------------< S P L I T _ U R L >------------------------------------------------------------
 
 
Split a url into a scheme, authority indicator, and domain.
 
If protocol relative url, return nil scheme and domain else return nil for both scheme and domain.
 
  
When not protocol relative, get scheme, authority indicator, and domain.  If there is an authority indicator (one
+
--[=[-------------------------< I S _ P A R A M E T E R _ E X T _ W I K I L I N K >----------------------------
or more '/' characters following the scheme's colon), make sure that there are only 2.
 
  
]]
+
Return true if a parameter value has a string that begins and ends with square brackets [ and ] and the first
 +
non-space characters following the opening bracket appear to be a url.  The test will also find external wikilinks
 +
that use protocol relative urls. Also finds bare urls.
  
local function split_url (url_str)
+
The frontier pattern prevents a match on interwiki links which are similar to scheme:path urls.  The tests that
local scheme, authority, domain;
+
find bracketed urls are required because the parameters that call this test (currently |title=, |chapter=, |work=,
+
and |publisher=) may have wikilinks and there are articles or redirects like '//Hus' so, while uncommon, |title=[[//Hus]]
url_str = url_str:gsub ('(%a)/.*', '%1'); -- strip path information (the capture prevents false replacement of '//')
+
is possible as might be [[en://Hus]].
  
if url_str:match ('^//%S*') then -- if there is what appears to be a protocol relative url
+
]=]
domain = url_str:match ('^//(%S*)')
 
elseif url_str:match ('%S-:/*%S+') then -- if there is what appears to be a scheme, optional authority indicator, and domain name
 
scheme, authority, domain = url_str:match ('(%S-:)(/*)(%S+)'); -- extract the scheme, authority indicator, and domain portions
 
authority = authority:gsub ('//', '', 1); -- replace place 1 pair of '/' with nothing;
 
if is_set(authority) then -- if anything left (1 or 3+ '/' where authority should be) then
 
domain = nil; -- set to nil which will cause an error message
 
end
 
end
 
 
return scheme, domain;
 
end
 
  
 +
local function is_parameter_ext_wikilink (value)
 +
local scheme, domain;
  
--[[--------------------------< L I N K _ P A R A M _ O K >---------------------------------------------------
+
if value:match ('%f[%[]%[%a%S*:%S+.*%]') then -- if ext wikilink with scheme and domain: [xxxx://yyyyy.zzz]
 
+
scheme, domain = split_url (value:match ('%f[%[]%[(%a%S*:%S+).*%]'));
checks the content of |title-link=, |series-link=, |author-link= etc for properly formatted content: no wikilinks, no urls
+
elseif value:match ('%f[%[]%[//%S+.*%]') then -- if protocol relative ext wikilink: [//yyyyy.zzz]
 +
scheme, domain = split_url (value:match ('%f[%[]%[(//%S+).*%]'));
 +
elseif value:match ('%a%S*:%S+') then -- if bare url with scheme; may have leading or trailing plain text
 +
scheme, domain = split_url (value:match ('(%a%S*:%S+)'));
 +
elseif value:match ('//%S+') then -- if protocol relative bare url: //yyyyy.zzz; may have leading or trailing plain text
 +
scheme, domain = split_url (value:match ('(//%S+)')); -- what is left should be the domain
 +
else
 +
return false; -- didn't find anything that is obviously a url
 +
end
 +
 
 +
return is_url (scheme, domain); -- return true if value appears to be a valid url
 +
end
  
Link parameters are to hold the title of a wikipedia article so none of the WP:TITLESPECIALCHARACTERS are allowed:
 
# < > [ ] | { } _
 
except the underscore which is used as a space in wiki urls and # which is used for section links
 
  
returns false when the value contains any of these characters.
+
--[[-------------------------< C H E C K _ F O R _ U R L >-----------------------------------------------------
  
When there are no illegal characters, this function returns TRUE if value DOES NOT appear to be a valid url (the
+
loop through a list of parameters and their values.  Look at the value and if it has an external link, emit an error message.
|<param>-link= parameter is ok); else false when value appears to be a valid url (the |<param>-link= parameter is NOT ok).
 
  
 
]]
 
]]
  
local function link_param_ok (value)
+
local function check_for_url (parameter_list)
local scheme, domain;
+
local error_message = '';
if value:find ('[<>%[%]|{}]') then -- if any prohibited characters
+
for k, v in pairs (parameter_list) do -- for each parameter in the list
return false;
+
if is_parameter_ext_wikilink (v) then -- look at the value; if there is a url add an error message
 +
if is_set(error_message) then -- once we've added the first portion of the error message ...
 +
error_message=error_message .. ", "; -- ... add a comma space separator
 +
end
 +
error_message=error_message .. "&#124;" .. k .. "="; -- add the failed parameter
 +
end
 +
end
 +
if is_set (error_message) then -- done looping, if there is an error message, display it
 +
table.insert( z.message_tail, { set_error( 'param_has_ext_link', {error_message}, true ) } );
 
end
 
end
 
scheme, domain = split_url (value); -- get scheme or nil and domain or nil from url;
 
return not is_url (scheme, domain); -- return true if value DOES NOT appear to be a valid url
 
 
end
 
end
  
  
--[[--------------------------< C H E C K _ U R L >------------------------------------------------------------
+
--[[--------------------------< S A F E _ F O R _ U R L >------------------------------------------------------
  
Determines whether a URL string appears to be valid.
+
Escape sequences for content that will be used for URL descriptions
 
 
First we test for space characters.  If any are found, return false.  Then split the url into scheme and domain
 
portions, or for protocol relative (//example.com) urls, just the domain.  Use is_url() to validate the two
 
portions of the url.  If both are valid, or for protocol relative if domain is valid, return true, else false.
 
  
 
]]
 
]]
  
local function check_url( url_str )
+
local function safe_for_url( str )
if nil == url_str:match ("^%S+$") then -- if there are any spaces in |url=value it can't be a proper url
+
if str:match( "%[%[.-%]%]" ) ~= nil then  
return false;
+
table.insert( z.message_tail, { set_error( 'wikilink_in_url', {}, true ) } );
 
end
 
end
local scheme, domain;
+
 
+
return str:gsub( '[%[%]\n]', {
scheme, domain = split_url (url_str); -- get scheme or nil and domain or nil from url;  
+
['['] = '&#91;',
return is_url (scheme, domain); -- return true if value appears to be a valid url
+
[']'] = '&#93;',
 +
['\n'] = ' ' } );
 
end
 
end
  
 +
--[[--------------------------< E X T E R N A L _ L I N K >----------------------------------------------------
  
--[=[-------------------------< I S _ P A R A M E T E R _ E X T _ W I K I L I N K >----------------------------
+
Format an external link with error checking
  
Return true if a parameter value has a string that begins and ends with square brackets [ and ] and the first
+
]]
non-space characters following the opening bracket appear to be a url.  The test will also find external wikilinks
 
that use protocol relative urls. Also finds bare urls.
 
  
The frontier pattern prevents a match on interwiki links which are similar to scheme:path urls.  The tests that
+
local function external_link( URL, label, source )
find bracketed urls are required because the parameters that call this test (currently |title=, |chapter=, |work=,
+
local error_str = "";
and |publisher=) may have wikilinks and there are articles or redirects like '//Hus' so, while uncommon, |title=[[//Hus]]
+
if not is_set( label ) then
is possible as might be [[en://Hus]].
+
label = URL;
 
+
if is_set( source ) then
]=]
+
error_str = set_error( 'bare_url_missing_title', { wrap_style ('parameter', source) }, false, " " );
 +
else
 +
error( cfg.messages["bare_url_no_origin"] );
 +
end
 +
end
 +
if not check_url( URL ) then
 +
error_str = set_error( 'bad_url', {wrap_style ('parameter', source)}, false, " " ) .. error_str;
 +
end
 +
return table.concat({ "[", URL, " ", safe_for_url( label ), "]", error_str });
 +
end
 +
 
 +
--[[--------------------------< D E P R E C A T E D _ P A R A M E T E R >--------------------------------------
  
local function is_parameter_ext_wikilink (value)
+
Categorize and emit an error message when the citation contains one or more deprecated parameters.  The function includes the
local scheme, domain;
+
offending parameter name to the error message.  Only one error message is emitted regardless of the number of deprecated
 +
parameters in the citation.
  
value = value:gsub ('([^%s/])/[%a%d].*', '%1'); -- strip path information (the capture prevents false replacement of '//')
+
]]
  
if value:match ('%f[%[]%[%a%S*:%S+.*%]') then -- if ext wikilink with scheme and domain: [xxxx://yyyyy.zzz]
+
local page_in_deprecated_cat; -- sticky flag so that the category is added only once
scheme, domain = value:match ('%f[%[]%[(%a%S*:)(%S+).*%]')
+
local function deprecated_parameter(name)
elseif value:match ('%f[%[]%[//%S*%.%S+.*%]') then -- if protocol relative ext wikilink: [//yyyyy.zzz]
+
if not page_in_deprecated_cat then
domain = value:match ('%f[%[]%[//(%S*%.%S+).*%]');
+
page_in_deprecated_cat = true; -- note that we've added this category
elseif value:match ('%a%S*:%S+') then -- if bare url with scheme; may have leading or trailing plain text
+
table.insert( z.message_tail, { set_error( 'deprecated_params', {name}, true ) } ); -- add error message
scheme, domain = value:match ('(%a%S*:)(%S+)');
 
elseif value:match ('//%S*%.%S+') then -- if protocol relative bare url: //yyyyy.zzz; may have leading or trailing plain text
 
domain = value:match ('//(%S*%.%S+)'); -- what is left should be the domain
 
else
 
return false; -- didn't find anything that is obviously a url
 
 
end
 
end
 
return is_url (scheme, domain); -- return true if value appears to be a valid url
 
 
end
 
end
  
 +
--[[--------------------------< K E R N _ Q U O T E S >--------------------------------------------------------
  
--[[-------------------------< C H E C K _ F O R _ U R L >-----------------------------------------------------
+
Apply kerning to open the space between the quote mark provided by the Module and a leading or trailing quote mark contained in a |title= or |chapter= parameter's value.
 +
This function will positive kern either single or double quotes:
 +
"'Unkerned title with leading and trailing single quote marks'"
 +
" 'Kerned title with leading and trailing single quote marks' " (in real life the kerning isn't as wide as this example)
 +
Double single quotes (italic or bold wikimarkup) are not kerned.
  
loop through a list of parameters and their values.  Look at the value and if it has an external link, emit an error message.
+
Call this function for chapter titles, for website titles, etc; not for book titles.
  
 
]]
 
]]
  
local function check_for_url (parameter_list)
+
local function kern_quotes (str)
local error_message = '';
+
local cap='';
for k, v in pairs (parameter_list) do -- for each parameter in the list
+
local cap2='';
if is_parameter_ext_wikilink (v) then -- look at the value; if there is a url add an error message
+
if is_set(error_message) then -- once we've added the first portion of the error message ...
+
cap, cap2 = str:match ("^([\"\'])([^\'].+)"); -- match leading double or single quote but not double single quotes
error_message=error_message .. ", "; -- ... add a comma space separator
+
if is_set (cap) then
end
+
str = substitute (cfg.presentation['kern-left'], {cap, cap2});
error_message=error_message .. "&#124;" .. k .. "="; -- add the failed parameter
 
end
 
 
end
 
end
if is_set (error_message) then -- done looping, if there is an error message, display it
+
 
table.insert( z.message_tail, { set_error( 'param_has_ext_link', {error_message}, true ) } );
+
cap, cap2 = str:match ("^(.+[^\'])([\"\'])$")
 +
if is_set (cap) then
 +
str = substitute (cfg.presentation['kern-right'], {cap, cap2});
 
end
 
end
 +
return str;
 
end
 
end
  
 +
--[[--------------------------< F O R M A T _ S C R I P T _ V A L U E >----------------------------------------
  
--[[--------------------------< S A F E _ F O R _ I T A L I C S >----------------------------------------------
+
|script-title= holds title parameters that are not written in Latin based scripts: Chinese, Japanese, Arabic, Hebrew, etc. These scripts should
 +
not be italicized and may be written right-to-left.  The value supplied by |script-title= is concatenated onto Title after Title has been wrapped
 +
in italic markup.
  
Protects a string that will be wrapped in wiki italic markup '' ... ''
+
Regardless of language, all values provided by |script-title= are wrapped in <bdi>...</bdi> tags to isolate rtl languages from the English left to right.
  
Note: We cannot use <i> for italics, as the expected behavior for italics specified by ''...'' in the title is that
+
|script-title= provides a unique feature. The value in |script-title= may be prefixed with a two-character ISO639-1 language code and a colon:
they will be inverted (i.e. unitalicized) in the resulting references.  In addition, <i> and '' tend to interact
+
|script-title=ja:*** *** (where * represents a Japanese character)
poorly under Mediawiki's HTML tidy.
+
Spaces between the two-character code and the colon and the colon and the first script character are allowed:
 +
|script-title=ja : *** ***
 +
|script-title=ja: *** ***
 +
|script-title=ja :*** ***
 +
Spaces preceding the prefix are allowed: |script-title = ja:*** ***
  
 +
The prefix is checked for validity.  If it is a valid ISO639-1 language code, the lang attribute (lang="ja") is added to the <bdi> tag so that browsers can
 +
know the language the tag contains.  This may help the browser render the script more correctly.  If the prefix is invalid, the lang attribute
 +
is not added.  At this time there is no error message for this condition.
 +
 +
Supports |script-title= and |script-chapter=
 +
 +
TODO: error messages when prefix is invalid ISO639-1 code; when script_value has prefix but no script;
 
]]
 
]]
  
local function safe_for_italics( str )
+
local function format_script_value (script_value)
if not is_set(str) then
+
local lang=''; -- initialize to empty string
return str;
+
local name;
else
+
if script_value:match('^%l%l%s*:') then -- if first 3 non-space characters are script language prefix
if str:sub(1,1) == "'" then str = "<span />" .. str; end
+
lang = script_value:match('^(%l%l)%s*:%s*%S.*'); -- get the language prefix or nil if there is no script
if str:sub(-1,-1) == "'" then str = str .. "<span />"; end
+
if not is_set (lang) then
+
return ''; -- script_value was just the prefix so return empty string
-- Remove newlines as they break italics.
+
end
return str:gsub( '\n', ' ' );
+
-- if we get this far we have prefix and script
 +
name = mw.language.fetchLanguageName( lang, "en" ); -- get language name so that we can use it to categorize
 +
if is_set (name) then -- is prefix a proper ISO 639-1 language code?
 +
script_value = script_value:gsub ('^%l%l%s*:%s*', ''); -- strip prefix from script
 +
-- is prefix one of these language codes?
 +
if in_array (lang, {'am', 'ar', 'bg', 'bs', 'dv', 'el', 'fa', 'he', 'hy', 'ja', 'ka', 'ko', 'ku', 'mk', 'ml', 'ps', 'ru', 'sd', 'sr', 'th', 'uk', 'ug', 'yi', 'zh'}) then
 +
add_prop_cat ('script_with_name', {name, lang})
 +
else
 +
add_prop_cat ('script')
 +
end
 +
lang = ' lang="' .. lang .. '" '; -- convert prefix into a lang attribute
 +
else
 +
lang = ''; -- invalid so set lang to empty string
 +
end
 
end
 
end
 +
script_value = substitute (cfg.presentation['bdi'], {lang, script_value}); -- isolate in case script is rtl
 +
 +
return script_value;
 
end
 
end
  
--[[--------------------------< S A F E _ F O R _ U R L >------------------------------------------------------
+
--[[--------------------------< S C R I P T _ C O N C A T E N A T E >------------------------------------------
 
 
Escape sequences for content that will be used for URL descriptions
 
  
 +
Initially for |title= and |script-title=, this function concatenates those two parameter values after the script value has been
 +
wrapped in <bdi> tags.
 
]]
 
]]
  
local function safe_for_url( str )
+
local function script_concatenate (title, script)
if str:match( "%[%[.-%]%]" ) ~= nil then  
+
if is_set (script) then
table.insert( z.message_tail, { set_error( 'wikilink_in_url', {}, true ) } );
+
script = format_script_value (script); -- <bdi> tags, lang atribute, categorization, etc; returns empty string on error
 +
if is_set (script) then
 +
title = title .. ' ' .. script; -- concatenate title and script title
 +
end
 
end
 
end
+
return title;
return str:gsub( '[%[%]\n]', {
 
['['] = '&#91;',
 
[']'] = '&#93;',
 
['\n'] = ' ' } );
 
 
end
 
end
  
--[[--------------------------< W R A P _ S T Y L E >----------------------------------------------------------
 
  
Applies styling to various parameters. Supplied string is wrapped using a message_list configuration taking one
+
--[[--------------------------< W R A P _ M S G >--------------------------------------------------------------
argument; protects italic styled parameters.  Additional text taken from citation_config.presentation - the reason
+
 
this function is similar to but separate from wrap_msg().
+
Applies additional message text to various parameter values. Supplied string is wrapped using a message_list
 +
configuration taking one argument.  Supports lower case text for {{citation}} templates.  Additional text taken
 +
from citation_config.messages - the reason this function is similar to but separate from wrap_style().
  
 
]]
 
]]
  
local function wrap_style (key, str)
+
local function wrap_msg (key, str, lower)
 
if not is_set( str ) then
 
if not is_set( str ) then
 
return "";
 
return "";
elseif in_array( key, { 'italic-title', 'trans-italic-title' } ) then
 
str = safe_for_italics( str );
 
 
end
 
end
 +
if true == lower then
 +
local msg;
 +
msg = cfg.messages[key]:lower(); -- set the message to lower case before
 +
return substitute( msg, str ); -- including template text
 +
else
 +
return substitute( cfg.messages[key], str );
 +
end
 +
end
  
return substitute( cfg.presentation[key], {str} );
 
end
 
  
--[[--------------------------< E X T E R N A L _ L I N K >----------------------------------------------------
+
--[[--------------------------< F O R M A T _ C H A P T E R _ T I T L E >--------------------------------------
  
Format an external link with error checking
+
Format the four chapter parameters: |script-chapter=, |chapter=, |trans-chapter=, and |chapter-url= into a single Chapter meta-
 +
parameter (chapter_url_source used for error messages).
  
 
]]
 
]]
  
local function external_link( URL, label, source )
+
local function format_chapter_title (scriptchapter, chapter, transchapter, chapterurl, chapter_url_source, no_quotes)
local error_str = "";
+
local chapter_error = '';
if not is_set( label ) then
+
label = URL;
+
if not is_set (chapter) then
if is_set( source ) then
+
chapter = ''; -- to be safe for concatenation
error_str = set_error( 'bare_url_missing_title', { wrap_style ('parameter', source) }, false, " " );
+
else
else
+
if false == no_quotes then
error( cfg.messages["bare_url_no_origin"] );
+
chapter = kern_quotes (chapter); -- if necessary, separate chapter title's leading and trailing quote marks from Module provided quote marks
end
+
chapter = wrap_style ('quoted-title', chapter);
 +
end
 
end
 
end
if not check_url( URL ) then
 
error_str = set_error( 'bad_url', {wrap_style ('parameter', source)}, false, " " ) .. error_str;
 
end
 
return table.concat({ "[", URL, " ", safe_for_url( label ), "]", error_str });
 
end
 
  
--[[--------------------------< E X T E R N A L _ L I N K _ I D >----------------------------------------------
+
chapter = script_concatenate (chapter, scriptchapter) -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
  
Formats a wiki style external link
+
if is_set (transchapter) then
 
+
transchapter = wrap_style ('trans-quoted-title', transchapter);
]]
+
if is_set (chapter) then
 
+
chapter = chapter ..  ' ' .. transchapter;
local function external_link_id(options)
+
else -- here when transchapter without chapter or script-chapter
local url_string = options.id;
+
chapter = transchapter; --
if options.encode == true or options.encode == nil then
+
chapter_error = ' ' .. set_error ('trans_missing_title', {'chapter'});
url_string = mw.uri.encode( url_string );
+
end
 
end
 
end
return mw.ustring.format( '[[%s|%s]]%s[%s%s%s %s]',
 
options.link, options.label, options.separator or "&nbsp;",
 
options.prefix, url_string, options.suffix or "",
 
mw.text.nowiki(options.id)
 
);
 
end
 
  
--[[--------------------------< D E P R E C A T E D _ P A R A M E T E R >--------------------------------------
+
if is_set (chapterurl) then
 +
chapter = external_link (chapterurl, chapter, chapter_url_source); -- adds bare_url_missing_title error if appropriate
 +
end
 +
 
 +
return chapter .. chapter_error;
 +
end
  
Categorize and emit an error message when the citation contains one or more deprecated parameters.  The function includes the
+
--[[--------------------------< H A S _ I N V I S I B L E _ C H A R S >----------------------------------------
offending parameter name to the error message.  Only one error message is emitted regardless of the number of deprecated
 
parameters in the citation.
 
  
]]
+
This function searches a parameter's value for nonprintable or invisible characters.  The search stops at the
 +
first match.
  
local page_in_deprecated_cat; -- sticky flag so that the category is added only once
+
This function will detect the visible replacement character when it is part of the wikisource.
local function deprecated_parameter(name)
 
if not page_in_deprecated_cat then
 
page_in_deprecated_cat = true; -- note that we've added this category
 
table.insert( z.message_tail, { set_error( 'deprecated_params', {name}, true ) } ); -- add error message
 
end
 
end
 
  
--[[--------------------------< K E R N _ Q U O T E S >--------------------------------------------------------
+
Detects but ignores nowiki and math stripmarkers.  Also detects other named stripmarkers (gallery, math, pre, ref)
 +
and identifies them with a slightly different error message.  See also coins_cleanup().
  
Apply kerning to open the space between the quote mark provided by the Module and a leading or trailing quote mark contained in a |title= or |chapter= parameter's value.
+
Detects but ignores the character pattern that results from the transclusion of {{'}} templates.
This function will positive kern either single or double quotes:
 
"'Unkerned title with leading and trailing single quote marks'"
 
" 'Kerned title with leading and trailing single quote marks' " (in real life the kerning isn't as wide as this example)
 
Double single quotes (italic or bold wikimarkup) are not kerned.
 
  
Call this function for chapter titles, for website titles, etc; not for book titles.
+
Output of this function is an error message that identifies the character or the Unicode group, or the stripmarker
 +
that was detected along with its position (or, for multi-byte characters, the position of its first byte) in the
 +
parameter value.
  
 
]]
 
]]
  
local function kern_quotes (str)
+
local function has_invisible_chars (param, v)
local cap='';
+
local position = ''; -- position of invisible char or starting position of stripmarker
local cap2='';
+
local dummy; -- end of matching string; not used but required to hold end position when a capture is returned
 +
local capture; -- used by stripmarker detection to hold name of the stripmarker
 +
local i=1;
 +
local stripmarker, apostrophe;
 
 
cap, cap2 = str:match ("^([\"\'])([^\'].+)"); -- match leading double or single quote but not double single quotes
+
capture = string.match (v, '[%w%p ]*'); -- Test for values that are simple ASCII text and bypass other tests if true
if is_set (cap) then
+
if capture == v then -- if same there are no unicode characters
str = substitute (cfg.presentation['kern-left'], {cap, cap2});
+
return;
 
end
 
end
  
cap, cap2 = str:match ("^(.+[^\'])([\"\'])$")
+
while cfg.invisible_chars[i] do
if is_set (cap) then
+
local char=cfg.invisible_chars[i][1] -- the character or group name
str = substitute (cfg.presentation['kern-right'], {cap, cap2});
+
local pattern=cfg.invisible_chars[i][2] -- the pattern used to find it
end
+
position, dummy, capture = mw.ustring.find (v, pattern) -- see if the parameter value contains characters that match the pattern
return str;
+
end
+
if position then
 
+
-- if 'nowiki' == capture or 'math' == capture or ('ref' == capture and 'quote' == param) then -- nowiki, math, or quote param and ref stripmarker (not an error condition)
--[[--------------------------< F O R M A T _ S C R I P T _ V A L U E >----------------------------------------
+
if 'nowiki' == capture or 'math' == capture then -- nowiki, math stripmarker (not an error condition)
 
+
stripmarker = true; -- set a flag
|script-title= holds title parameters that are not written in Latin based scripts: Chinese, Japanese, Arabic, Hebrew, etc. These scripts should
+
elseif true == stripmarker and 'delete' == char then -- because stripmakers begin and end with the delete char, assume that we've found one end of a stripmarker
not be italicized and may be written right-to-left. The value supplied by |script-title= is concatenated onto Title after Title has been wrapped
+
position = nil; -- unset
in italic markup.
+
elseif 'apostrophe' == char then -- apostrophe template uses &zwj;, hair space and zero-width space
 
+
apostrophe = true;
Regardless of language, all values provided by |script-title= are wrapped in <bdi>...</bdi> tags to isolate rtl languages from the English left to right.
+
elseif true == apostrophe and in_array (char, {'zero width joiner', 'zero width space', 'hair space'}) then
 +
position = nil; -- unset
 +
else
 +
local err_msg;
 +
if capture then
 +
err_msg = capture .. ' ' .. char;
 +
else
 +
err_msg = char .. ' ' .. 'character';
 +
end
 +
 
 +
table.insert( z.message_tail, { set_error( 'invisible_char', {err_msg, wrap_style ('parameter', param), position}, true ) } ); -- add error message
 +
return; -- and done with this parameter
 +
end
 +
end
 +
i=i+1; -- bump our index
 +
end
 +
end
  
|script-title= provides a unique feature.  The value in |script-title= may be prefixed with a two-character ISO639-1 language code and a colon:
 
|script-title=ja:*** *** (where * represents a Japanese character)
 
Spaces between the two-character code and the colon and the colon and the first script character are allowed:
 
|script-title=ja : *** ***
 
|script-title=ja: *** ***
 
|script-title=ja :*** ***
 
Spaces preceding the prefix are allowed: |script-title = ja:*** ***
 
  
The prefix is checked for validity.  If it is a valid ISO639-1 language code, the lang attribute (lang="ja") is added to the <bdi> tag so that browsers can
+
--[[--------------------------< A R G U M E N T _ W R A P P E R >----------------------------------------------
know the language the tag contains.  This may help the browser render the script more correctly.  If the prefix is invalid, the lang attribute
 
is not added.  At this time there is no error message for this condition.
 
  
Supports |script-title= and |script-chapter=
+
Argument wrapper.  This function provides support for argument mapping defined in the configuration file so that
 +
multiple names can be transparently aliased to single internal variable.
  
TODO: error messages when prefix is invalid ISO639-1 code; when script_value has prefix but no script;
 
 
]]
 
]]
  
local function format_script_value (script_value)
+
local function argument_wrapper( args )
local lang=''; -- initialize to empty string
+
local origin = {};
local name;
+
if script_value:match('^%l%l%s*:') then -- if first 3 non-space characters are script language prefix
+
return setmetatable({
lang = script_value:match('^(%l%l)%s*:%s*%S.*'); -- get the language prefix or nil if there is no script
+
ORIGIN = function( self, k )
if not is_set (lang) then
+
local dummy = self[k]; --force the variable to be loaded.
return ''; -- script_value was just the prefix so return empty string
+
return origin[k];
 
end
 
end
-- if we get this far we have prefix and script
+
},
name = mw.language.fetchLanguageName( lang, "en" ); -- get language name so that we can use it to categorize
+
{
if is_set (name) then -- is prefix a proper ISO 639-1 language code?
+
__index = function ( tbl, k )
script_value = script_value:gsub ('^%l%l%s*:%s*', ''); -- strip prefix from script
+
if origin[k] ~= nil then
-- is prefix one of these language codes?
+
return nil;
if in_array (lang, {'ar', 'bg', 'bs', 'dv', 'el', 'fa', 'he', 'hy', 'ja', 'ka', 'ko', 'ku', 'mk', 'ps', 'ru', 'sd', 'sr', 'th', 'uk', 'ug', 'yi', 'zh'}) then
+
end
add_prop_cat ('script_with_name', {name, lang})
+
 +
local args, list, v = args, cfg.aliases[k];
 +
 +
if type( list ) == 'table' then
 +
v, origin[k] = select_one( args, list, 'redundant_parameters' );
 +
if origin[k] == nil then
 +
origin[k] = ''; -- Empty string, not nil
 +
end
 +
elseif list ~= nil then
 +
v, origin[k] = args[list], list;
 
else
 
else
add_prop_cat ('script')
+
-- maybe let through instead of raising an error?
 +
-- v, origin[k] = args[k], k;
 +
error( cfg.messages['unknown_argument_map'] );
 
end
 
end
lang = ' lang="' .. lang .. '" '; -- convert prefix into a lang attribute
+
else
+
-- Empty strings, not nil;
lang = ''; -- invalid so set lang to empty string
+
if v == nil then
end
+
v = cfg.defaults[k] or '';
end
+
origin[k] = '';
script_value = substitute (cfg.presentation['bdi'], {lang, script_value}); -- isolate in case script is rtl
+
end
 
+
return script_value;
+
tbl = rawset( tbl, k, v );
 +
return v;
 +
end,
 +
});
 
end
 
end
  
--[[--------------------------< S C R I P T _ C O N C A T E N A T E >------------------------------------------
+
--[[--------------------------< V A L I D A T E >--------------------------------------------------------------
 +
Looks for a parameter's name in the whitelist.
  
Initially for |title= and |script-title=, this function concatenates those two parameter values after the script value has been
+
Parameters in the whitelist can have three values:
wrapped in <bdi> tags.
+
true - active, supported parameters
 +
false - deprecated, supported parameters
 +
nil - unsupported parameters
 +
 
]]
 
]]
  
local function script_concatenate (title, script)
+
local function validate( name )
if is_set (script) then
+
local name = tostring( name );
script = format_script_value (script); -- <bdi> tags, lang atribute, categorization, etc; returns empty string on error
+
local state = whitelist.basic_arguments[ name ];
if is_set (script) then
+
title = title .. ' ' .. script; -- concatenate title and script title
+
-- Normal arguments
end
+
if true == state then return true; end -- valid actively supported parameter
 +
if false == state then
 +
deprecated_parameter (name); -- parameter is deprecated but still supported
 +
return true;
 +
end
 +
 +
-- Arguments with numbers in them
 +
name = name:gsub( "%d+", "#" ); -- replace digit(s) with # (last25 becomes last#
 +
state = whitelist.numbered_arguments[ name ];
 +
if true == state then return true; end -- valid actively supported parameter
 +
if false == state then
 +
deprecated_parameter (name); -- parameter is deprecated but still supported
 +
return true;
 
end
 
end
return title;
+
 +
return false; -- Not supported because not found or name is set to nil
 
end
 
end
  
  
--[[--------------------------< W R A P _ M S G >--------------------------------------------------------------
+
--[[--------------------------< N O W R A P _ D A T E >--------------------------------------------------------
 +
 
 +
When date is YYYY-MM-DD format wrap in nowrap span: <span ...>YYYY-MM-DD</span>.  When date is DD MMMM YYYY or is
 +
MMMM DD, YYYY then wrap in nowrap span: <span ...>DD MMMM</span> YYYY or <span ...>MMMM DD,</span> YYYY
  
Applies additional message text to various parameter values. Supplied string is wrapped using a message_list
+
DOES NOT yet support MMMM YYYY or any of the date ranges.
configuration taking one argument.  Supports lower case text for {{citation}} templates.  Additional text taken
 
from citation_config.messages - the reason this function is similar to but separate from wrap_style().
 
  
 
]]
 
]]
  
local function wrap_msg (key, str, lower)
+
local function nowrap_date (date)
if not is_set( str ) then
+
local cap='';
return "";
+
local cap2='';
end
+
 
if true == lower then
+
if date:match("^%d%d%d%d%-%d%d%-%d%d$") then
local msg;
+
date = substitute (cfg.presentation['nowrap1'], date);
msg = cfg.messages[key]:lower(); -- set the message to lower case before
+
return substitute( msg, str ); -- including template text
+
elseif date:match("^%a+%s*%d%d?,%s+%d%d%d%d$") or date:match ("^%d%d?%s*%a+%s+%d%d%d%d$") then
else
+
cap, cap2 = string.match (date, "^(.*)%s+(%d%d%d%d)$");
return substitute( cfg.messages[key], str );
+
date = substitute (cfg.presentation['nowrap2'], {cap, cap2});
end
+
end
 +
 +
return date;
 
end
 
end
  
 +
--[[--------------------------< S E T _ T I T L E T Y P E >----------------------------------------------------
  
--[[-------------------------< I S _ A L I A S _ U S E D >-----------------------------------------------------
+
This function sets default title types (equivalent to the citation including |type=<default value>) for those templates that have defaults.
 
+
Also handles the special case where it is desirable to omit the title type from the rendered citation (|type=none).
This function is used by select_one() to determine if one of a list of alias parameters is in the argument list
 
provided by the template.
 
 
 
Input:
 
args – pointer to the arguments table from calling template
 
alias – one of the list of possible aliases in the aliases lists from Module:Citation/CS1/Configuration
 
index – for enumerated parameters, identifies which one
 
enumerated – true/false flag used choose how enumerated aliases are examined
 
value – value associated with an alias that has previously been selected; nil if not yet selected
 
selected – the alias that has previously been selected; nil if not yet selected
 
error_list – list of aliases that are duplicates of the alias already selected
 
 
 
Returns:
 
value – value associated with alias we selected or that was previously selected or nil if an alias not yet selected
 
selected – the alias we selected or the alias that was previously selected or nil if an alias not yet selected
 
  
 
]]
 
]]
  
local function is_alias_used (args, alias, index, enumerated, value, selected, error_list)
+
local function set_titletype (cite_class, title_type)
if enumerated then -- is this a test for an enumerated parameters?
+
if is_set(title_type) then
alias = alias:gsub ('#', index); -- replace '#' with the value in index
+
if "none" == title_type then
else
+
title_type = ""; -- if |type=none then type parameter not displayed
alias = alias:gsub ('#', ''); -- remove '#' if it exists
+
end
 +
return title_type; -- if |type= has been set to any other value use that value
 
end
 
end
  
if is_set(args[alias]) then -- alias is in the template's argument list
+
return cfg.title_types [cite_class] or ''; -- set template's default title type; else empty string for concatenation
if value ~= nil and selected ~= alias then -- if we have already selected one of the aliases
 
local skip;
 
for _, v in ipairs(error_list) do -- spin through the error list to see if we've added this alias
 
if v == alias then
 
skip = true;
 
break; -- has been added so stop looking
 
end
 
end
 
if not skip then -- has not been added so
 
table.insert( error_list, alias ); -- add error alias to the error list
 
end
 
else
 
value = args[alias]; -- not yet selected an alias, so select this one
 
selected = alias;
 
end
 
end
 
return value, selected; -- return newly selected alias, or previously selected alias
 
 
end
 
end
  
  
--[[--------------------------< S E L E C T _ O N E >----------------------------------------------------------
+
--[[--------------------------< H Y P H E N _ T O _ D A S H >--------------------------------------------------
  
Chooses one matching parameter from a list of parameters to consider.  The list of parameters to consider is just
+
Converts a hyphen to a dash
names.  For parameters that may be enumerated, the position of the numerator in the parameter name is identified
 
by the '#' so |author-last1= and |author1-last= are represented as 'author-last#' and 'author#-last'.
 
 
 
Because enumerated parameter |<param>1= is an alias of |<param>= we must test for both possibilities.
 
 
 
 
 
Generates an error if more than one match is present.
 
  
 
]]
 
]]
  
local function select_one( args, aliases_list, error_condition, index )
+
local function hyphen_to_dash( str )
local value = nil; -- the value assigned to the selected parameter
+
if not is_set(str) or str:match( "[%[%]{}<>]" ) ~= nil then
local selected = ''; -- the name of the parameter we have chosen
+
return str;
local error_list = {};
+
end
 
+
return str:gsub( '-', '' );
if index ~= nil then index = tostring(index); end
 
 
 
for _, alias in ipairs( aliases_list ) do -- for each alias in the aliases list
 
if alias:match ('#') then -- if this alias can be enumerated
 
if '1' == index then -- when index is 1 test for enumerated and non-enumerated aliases
 
value, selected = is_alias_used (args, alias, index, false, value, selected, error_list); -- first test for non-enumerated alias
 
end
 
value, selected = is_alias_used (args, alias, index, true, value, selected, error_list); -- test for enumerated alias
 
else
 
value, selected = is_alias_used (args, alias, index, false, value, selected, error_list); --test for non-enumerated alias
 
end
 
end
 
 
 
if #error_list > 0 and 'none' ~= error_condition then -- for cases where this code is used outside of extract_names()
 
local error_str = "";
 
for _, k in ipairs( error_list ) do
 
if error_str ~= "" then error_str = error_str .. cfg.messages['parameter-separator'] end
 
error_str = error_str .. wrap_style ('parameter', k);
 
end
 
if #error_list > 1 then
 
error_str = error_str .. cfg.messages['parameter-final-separator'];
 
else
 
error_str = error_str .. cfg.messages['parameter-pair-separator'];
 
end
 
error_str = error_str .. wrap_style ('parameter', selected);
 
table.insert( z.message_tail, { set_error( error_condition, {error_str}, true ) } );
 
end
 
 
return value, selected;
 
 
end
 
end
  
  
--[[--------------------------< F O R M A T _ C H A P T E R _ T I T L E >--------------------------------------
+
--[[--------------------------< S A F E _ J O I N >------------------------------------------------------------
  
Format the four chapter parameters: |script-chapter=, |chapter=, |trans-chapter=, and |chapter-url= into a single Chapter meta-
+
Joins a sequence of strings together while checking for duplicate separation characters.
parameter (chapter_url_source used for error messages).
 
  
 
]]
 
]]
  
local function format_chapter_title (scriptchapter, chapter, transchapter, chapterurl, chapter_url_source, no_quotes)
+
local function safe_join( tbl, duplicate_char )
local chapter_error = '';
+
--[[
 +
Note: we use string functions here, rather than ustring functions.
 +
 +
This has considerably faster performance and should work correctly as
 +
long as the duplicate_char is strict ASCII.  The strings
 +
in tbl may be ASCII or UTF8.
 +
]]
 
 
if not is_set (chapter) then
+
local str = ''; -- the output string
chapter = ''; -- to be safe for concatenation
+
local comp = ''; -- what does 'comp' mean?
else
+
local end_chr = '';
if false == no_quotes then
+
local trim;
chapter = kern_quotes (chapter); -- if necessary, separate chapter title's leading and trailing quote marks from Module provided quote marks
+
for _, value in ipairs( tbl ) do
chapter = wrap_style ('quoted-title', chapter);
+
if value == nil then value = ''; end
end
+
end
+
if str == '' then -- if output string is empty
 
+
str = value; -- assign value to it (first time through the loop)
chapter = script_concatenate (chapter, scriptchapter) -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
+
elseif value ~= '' then
 
+
if value:sub(1,1) == '<' then -- Special case of values enclosed in spans and other markup.
if is_set (transchapter) then
+
comp = value:gsub( "%b<>", "" ); -- remove html markup (<span>string</span> -> string)
transchapter = wrap_style ('trans-quoted-title', transchapter);
+
else
if is_set (chapter) then
+
comp = value;
chapter = chapter .. ' ' .. transchapter;
+
end
else -- here when transchapter without chapter or script-chapter
+
-- typically duplicate_char is sepc
chapter = transchapter; --  
+
if comp:sub(1,1) == duplicate_char then -- is first charactier same as duplicate_char? why test first character?
chapter_error = ' ' .. set_error ('trans_missing_title', {'chapter'});
+
--  Because individual string segments often (always?) begin with terminal punct for th
end
+
--   preceding segment: 'First element' .. 'sepc next element' .. etc?
end
+
trim = false;
 
+
end_chr = str:sub(-1,-1); -- get the last character of the output string
if is_set (chapterurl) then
+
-- str = str .. "<HERE(enchr=" .. end_chr.. ")" -- debug stuff?
chapter = external_link (chapterurl, chapter, chapter_url_source); -- adds bare_url_missing_title error if appropriate
+
if end_chr == duplicate_char then -- if same as separator
end
+
str = str:sub(1,-2); -- remove it
 +
elseif end_chr == "'" then -- if it might be wikimarkup
 +
if str:sub(-3,-1) == duplicate_char .. "''" then -- if last three chars of str are sepc''
 +
str = str:sub(1, -4) .. "''"; -- remove them and add back ''
 +
elseif str:sub(-5,-1) == duplicate_char .. "]]''" then -- if last five chars of str are sepc]]''
 +
trim = true; -- why? why do this and next differently from previous?
 +
elseif str:sub(-4,-1) == duplicate_char .. "]''" then -- if last four chars of str are sepc]''  
 +
trim = true; -- same question
 +
end
 +
elseif end_chr == "]" then -- if it might be wikimarkup
 +
if str:sub(-3,-1) == duplicate_char .. "]]" then -- if last three chars of str are sepc]] wikilink
 +
trim = true;
 +
elseif str:sub(-2,-1) == duplicate_char .. "]" then -- if last two chars of str are sepc] external link
 +
trim = true;
 +
elseif str:sub(-4,-1) == duplicate_char .. "'']" then -- normal case when |url=something & |title=Title.
 +
trim = true;
 +
end
 +
elseif end_chr == " " then -- if last char of output string is a space
 +
if str:sub(-2,-1) == duplicate_char .. " " then -- if last two chars of str are <sepc><space>
 +
str = str:sub(1,-3); -- remove them both
 +
end
 +
end
  
return chapter .. chapter_error;
+
if trim then
end
+
if value ~= comp then -- value does not equal comp when value contains html markup
 
+
local dup2 = duplicate_char;
--[[--------------------------< H A S _ I N V I S I B L E _ C H A R S >----------------------------------------
+
if dup2:match( "%A" ) then dup2 = "%" .. dup2; end -- if duplicate_char not a letter then escape it
 
+
This function searches a parameter's value for nonprintable or invisible characters.  The search stops at the
+
value = value:gsub( "(%b<>)" .. dup2, "%1", 1 ) -- remove duplicate_char if it follows html markup
first match.
+
else
 +
value = value:sub( 2, -1 ); -- remove duplicate_char when it is first character
 +
end
 +
end
 +
end
 +
str = str .. value; --add it to the output string
 +
end
 +
end
 +
return str;
 +
end 
 +
 
 +
--[[--------------------------< I S _ G O O D _ V A N C _ N A M E >--------------------------------------------
  
This function will detect the visible replacement character when it is part of the wikisource.
+
For Vancouver Style, author/editor names are supposed to be rendered in Latin (read ASCII) characters.  When a name
 +
uses characters that contain diacritical marks, those characters are to converted to the corresponding Latin character.
 +
When a name is written using a non-Latin alphabet or logogram, that name is to be transliterated into Latin characters.
 +
These things are not currently possible in this module so are left to the editor to do.
  
Detects but ignores nowiki and math stripmarkers. Also detects other named stripmarkers (gallery, math, pre, ref)
+
This test allows |first= and |last= names to contain any of the letters defined in the four Unicode Latin character sets
and identifies them with a slightly different error message. See also coins_cleanup().
+
[http://www.unicode.org/charts/PDF/U0000.pdf C0 Controls and Basic Latin] 0041–005A, 0061–007A
 +
[http://www.unicode.org/charts/PDF/U0080.pdf C1 Controls and Latin-1 Supplement] 00C0–00D6, 00D8–00F6, 00F8–00FF
 +
[http://www.unicode.org/charts/PDF/U0100.pdf Latin Extended-A] 0100–017F
 +
[http://www.unicode.org/charts/PDF/U0180.pdf Latin Extended-B] 0180–01BF, 01C4–024F
  
Detects but ignores the character pattern that results from the transclusion of {{'}} templates.
+
|lastn= also allowed to contain hyphens, spaces, and apostrophes. (http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35029/)
 +
|firstn= also allowed to contain hyphens, spaces, apostrophes, and periods
  
Output of this function is an error message that identifies the character or the Unicode group, or the stripmarker
+
At the time of this writing, I had to write the 'if nil == mw.ustring.find ...' test ouside of the code editor and paste it here
that was detected along with its position (or, for multi-byte characters, the position of its first byte) in the
+
because the code editor gets confused between character insertion point and cursor position.
parameter value.
 
  
 
]]
 
]]
  
local function has_invisible_chars (param, v)
+
local function is_good_vanc_name (last, first)
local position = ''; -- position of invisible char or starting position of stripmarker
+
if nil == mw.ustring.find (last, "^[A-Za-zÀ-ÖØ-öø-ƿDŽ-ɏ%-%s%']*$") or nil == mw.ustring.find (first, "^[A-Za-zÀ-ÖØ-öø-ƿDŽ-ɏ%-%s%'%.]*$") then
local dummy; -- end of matching string; not used but required to hold end position when a capture is returned
+
add_vanc_error ();
local capture; -- used by stripmarker detection to hold name of the stripmarker
+
return false; -- not a string of latin characters; Vancouver required Romanization
local i=1;
+
end;
local stripmarker, apostrophe;
+
return true;
 +
end
 +
 
 +
--[[--------------------------< R E D U C E _ T O _ I N I T I A L S >------------------------------------------
  
while cfg.invisible_chars[i] do
+
Attempts to convert names to initials in support of |name-list-format=vanc.
local char=cfg.invisible_chars[i][1] -- the character or group name
 
local pattern=cfg.invisible_chars[i][2] -- the pattern used to find it
 
position, dummy, capture = mw.ustring.find (v, pattern) -- see if the parameter value contains characters that match the pattern
 
 
if position then
 
-- if 'nowiki' == capture or 'math' == capture or ('ref' == capture and 'quote' == param) then -- nowiki, math, or quote param and ref stripmarker (not an error condition)
 
if 'nowiki' == capture or 'math' == capture then -- nowiki, math stripmarker (not an error condition)
 
stripmarker = true; -- set a flag
 
elseif true == stripmarker and 'delete' == char then -- because stripmakers begin and end with the delete char, assume that we've found one end of a stripmarker
 
position = nil; -- unset
 
elseif 'apostrophe' == char then -- apostrophe template uses &zwj;, hair space and zero-width space
 
apostrophe = true;
 
elseif true == apostrophe and in_array (char, {'zero width joiner', 'zero width space', 'hair space'}) then
 
position = nil; -- unset
 
else
 
local err_msg;
 
if capture then
 
err_msg = capture .. ' ' .. char;
 
else
 
err_msg = char .. ' ' .. 'character';
 
end
 
  
table.insert( z.message_tail, { set_error( 'invisible_char', {err_msg, wrap_style ('parameter', param), position}, true ) } ); -- add error message
+
Names in |firstn= may be separated by spaces or hyphens, or for initials, a period. See http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35062/.
return; -- and done with this parameter
+
 
end
+
Vancouver style requires family rank designations (Jr, II, III, etc) to be rendered as Jr, 2nd, 3rd, etc.  This form is not
end
+
currently supported by this code so correctly formed names like Smith JL 2nd are converted to Smith J2. See http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35085/.
i=i+1; -- bump our index
+
 
 +
This function uses ustring functions because firstname initials may be any of the unicode Latin characters accepted by is_good_vanc_name ().
 +
 
 +
]]
 +
 
 +
local function reduce_to_initials(first)
 +
if mw.ustring.match(first, "^%u%u$") then return first end; -- when first contains just two upper-case letters, nothing to do
 +
local initials = {}
 +
local i = 0; -- counter for number of initials
 +
for word in mw.ustring.gmatch(first, "[^%s%.%-]+") do -- names separated by spaces, hyphens, or periods
 +
table.insert(initials, mw.ustring.sub(word,1,1)) -- Vancouver format does not include full stops.
 +
i = i + 1; -- bump the counter
 +
if 2 <= i then break; end -- only two initials allowed in Vancouver system; if 2, quit
 
end
 
end
 +
return table.concat(initials) -- Vancouver format does not include spaces.
 
end
 
end
  
 +
--[[--------------------------< L I S T  _ P E O P L E >-------------------------------------------------------
  
--[[--------------------------< A R G U M E N T _ W R A P P E R >----------------------------------------------
+
Formats a list of people (e.g. authors / editors)
 
 
Argument wrapper. This function provides support for argument mapping defined in the configuration file so that
 
multiple names can be transparently aliased to single internal variable.
 
  
 
]]
 
]]
  
local function argument_wrapper( args )
+
local function list_people(control, people, etal, list_name) -- TODO: why is list_name here?  not used in this function
local origin = {};
+
local sep;
+
local namesep;
return setmetatable({
+
local format = control.format
ORIGIN = function( self, k )
+
local maximum = control.maximum
local dummy = self[k]; --force the variable to be loaded.
+
local lastauthoramp = control.lastauthoramp;
return origin[k];
+
local text = {}
end
+
 
},
+
if 'vanc' == format then -- Vancouver-like author/editor name styling?
{
+
sep = ','; -- name-list separator between authors is a comma
__index = function ( tbl, k )
+
namesep = ' '; -- last/first separator is a space
if origin[k] ~= nil then
+
else
return nil;
+
sep = ';' -- name-list separator between authors is a semicolon
end
+
namesep = ', ' -- last/first separator is <comma><space>
+
end
local args, list, v = args, cfg.aliases[k];
+
+
if sep:sub(-1,-1) ~= " " then sep = sep .. " " end
if type( list ) == 'table' then
+
if is_set (maximum) and maximum < 1 then return "", 0; end -- returned 0 is for EditorCount; not used for authors
v, origin[k] = select_one( args, list, 'redundant_parameters' );
+
if origin[k] == nil then
+
for i,person in ipairs(people) do
origin[k] = ''; -- Empty string, not nil
+
if is_set(person.last) then
end
+
local mask = person.mask
elseif list ~= nil then
+
local one
v, origin[k] = args[list], list;
+
local sep_one = sep;
 +
if is_set (maximum) and i > maximum then
 +
etal = true;
 +
break;
 +
elseif (mask ~= nil) then
 +
local n = tonumber(mask)
 +
if (n ~= nil) then
 +
one = string.rep("&mdash;",n)
 +
else
 +
one = mask;
 +
sep_one = " ";
 +
end
 
else
 
else
-- maybe let through instead of raising an error?
+
one = person.last
-- v, origin[k] = args[k], k;
+
local first = person.first
error( cfg.messages['unknown_argument_map'] );
+
if is_set(first) then
 +
if ( "vanc" == format ) then -- if vancouver format
 +
one = one:gsub ('%.', ''); -- remove periods from surnames (http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35029/)
 +
if not person.corporate and is_good_vanc_name (one, first) then -- and name is all Latin characters; corporate authors not tested
 +
first = reduce_to_initials(first) -- attempt to convert first name(s) to initials
 +
end
 +
end
 +
one = one .. namesep .. first
 +
end
 +
if is_set(person.link) and person.link ~= control.page_name then
 +
one = "[[" .. person.link .. "|" .. one .. "]]" -- link author/editor if this page is not the author's/editor's page
 +
end
 
end
 
end
+
table.insert( text, one )
-- Empty strings, not nil;
+
table.insert( text, sep_one )
if v == nil then
+
end
v = cfg.defaults[k] or '';
+
end
origin[k] = '';
+
 
end
+
local count = #text / 2; -- (number of names + number of separators) divided by 2
+
if count > 0 then
tbl = rawset( tbl, k, v );
+
if count > 1 and is_set(lastauthoramp) and not etal then
return v;
+
text[#text-2] = " & "; -- replace last separator with ampersand text
end,
+
end
});
+
text[#text] = nil; -- erase the last separator
 +
end
 +
 +
local result = table.concat(text) -- construct list
 +
if etal and is_set (result) then -- etal may be set by |display-authors=etal but we might not have a last-first list
 +
result = result .. sep .. ' ' .. cfg.messages['et al']; -- we've go a last-first list and etal so add et al.
 +
end
 +
 +
return result, count
 
end
 
end
  
--[[--------------------------< V A L I D A T E >--------------------------------------------------------------
+
--[[--------------------------< A N C H O R _ I D >------------------------------------------------------------
Looks for a parameter's name in the whitelist.
+
 
 +
Generates a CITEREF anchor ID if we have at least one name or a date.  Otherwise returns an empty string.
  
Parameters in the whitelist can have three values:
+
namelist is one of the contributor-, author-, or editor-name lists chosen in that order.  year is Year or anchor_year.
true - active, supported parameters
 
false - deprecated, supported parameters
 
nil - unsupported parameters
 
 
]]
 
  
local function validate( name )
+
]]
local name = tostring( name );
+
local function anchor_id (namelist, year)
local state = whitelist.basic_arguments[ name ];
+
local names={}; -- a table for the one to four names and year
+
for i,v in ipairs (namelist) do -- loop through the list and take up to the first four last names
-- Normal arguments
+
names[i] = v.last
if true == state then return true; end -- valid actively supported parameter
+
if i == 4 then break end -- if four then done
if false == state then
 
deprecated_parameter (name); -- parameter is deprecated but still supported
 
return true;
 
 
end
 
end
+
table.insert (names, year); -- add the year at the end
-- Arguments with numbers in them
+
local id = table.concat(names); -- concatenate names and year for CITEREF id
name = name:gsub( "%d+", "#" ); -- replace digit(s) with # (last25 becomes last#
+
if is_set (id) then -- if concatenation is not an empty string
state = whitelist.numbered_arguments[ name ];
+
return "CITEREF" .. id; -- add the CITEREF portion
if true == state then return true; end -- valid actively supported parameter
+
else
if false == state then
+
return ''; -- return an empty string; no reason to include CITEREF id in this citation
deprecated_parameter (name); -- parameter is deprecated but still supported
 
return true;
 
 
end
 
end
 
return false; -- Not supported because not found or name is set to nil
 
 
end
 
end
  
  
-- Formats a wiki style internal link
+
--[[--------------------------< N A M E _ H A S _ E T A L >----------------------------------------------------
local function internal_link_id(options)
 
return mw.ustring.format( '[[%s|%s]]%s[[%s%s%s|%s]]',
 
options.link, options.label, options.separator or "&nbsp;",
 
options.prefix, options.id, options.suffix or "",
 
mw.text.nowiki(options.id)
 
);
 
end
 
  
 +
Evaluates the content of author and editor name parameters for variations on the theme of et al.  If found,
 +
the et al. is removed, a flag is set to true and the function returns the modified name and the flag.
  
--[[--------------------------< N O W R A P _ D A T E >--------------------------------------------------------
+
This function never sets the flag to false but returns it's previous state because it may have been set by
 +
previous passes through this function or by the parameters |display-authors=etal or |display-editors=etal
  
When date is YYYY-MM-DD format wrap in nowrap span: <span ...>YYYY-MM-DD</span>.  When date is DD MMMM YYYY or is
+
]]
MMMM DD, YYYY then wrap in nowrap span: <span ...>DD MMMM</span> YYYY or <span ...>MMMM DD,</span> YYYY
 
  
DOES NOT yet support MMMM YYYY or any of the date ranges.
+
local function name_has_etal (name, etal, nocat)
  
]]
+
if is_set (name) then -- name can be nil in which case just return
 
+
local etal_pattern = "[;,]? *[\"']*%f[%a][Ee][Tt] *[Aa][Ll][%.\"']*$" -- variations on the 'et al' theme
local function nowrap_date (date)
+
local others_pattern = "[;,]? *%f[%a]and [Oo]thers"; -- and alternate to et al.
local cap='';
+
local cap2='';
+
if name:match (etal_pattern) then -- variants on et al.
 
+
name = name:gsub (etal_pattern, ''); -- if found, remove
if date:match("^%d%d%d%d%-%d%d%-%d%d$") then
+
etal = true; -- set flag (may have been set previously here or by |display-authors=etal)
date = substitute (cfg.presentation['nowrap1'], date);
+
if not nocat then -- no categorization for |vauthors=
+
add_maint_cat ('etal'); -- and add a category if not already added
elseif date:match("^%a+%s*%d%d?,%s+%d%d%d%d$") or date:match ("^%d%d?%s*%a+%s+%d%d%d%d$") then
+
end
cap, cap2 = string.match (date, "^(.*)%s+(%d%d%d%d)$");
+
elseif name:match (others_pattern) then -- if not 'et al.', then 'and others'?
date = substitute (cfg.presentation['nowrap2'], {cap, cap2});
+
name = name:gsub (others_pattern, ''); -- if found, remove
 +
etal = true; -- set flag (may have been set previously here or by |display-authors=etal)
 +
if not nocat then -- no categorization for |vauthors=
 +
add_maint_cat ('etal'); -- and add a category if not already added
 +
end
 +
end
 
end
 
end
+
return name, etal; --
return date;
 
 
end
 
end
  
--[[--------------------------< IS _ V A L I D _ I S X N >-----------------------------------------------------
+
--[[--------------------------< E X T R A C T _ N A M E S >----------------------------------------------------
 +
Gets name list from the input arguments
  
ISBN-10 and ISSN validator code calculates checksum across all isbn/issn digits including the check digit. ISBN-13 is checked in check_isbn().
+
Searches through args in sequential order to find |lastn= and |firstn= parameters (or their aliases), and their matching link and mask parameters.
If the number is valid the result will be 0. Before calling this function, issbn/issn must be checked for length and stripped of dashes,
+
Stops searching when both |lastn= and |firstn= are not found in args after two sequential attempts: found |last1=, |last2=, and |last3= but doesn't
spaces and other non-isxn characters.
+
find |last4= and |last5= then the search is done.
  
]]
+
This function emits an error message when there is a |firstn= without a matching |lastn=.  When there are 'holes' in the list of last names, |last1= and |last3=
 +
are present but |last2= is missing, an error message is emitted. |lastn= is not required to have a matching |firstn=.
  
local function is_valid_isxn (isxn_str, len)
+
When an author or editor parameter contains some form of 'et al.', the 'et al.' is stripped from the parameter and a flag (etal) returned
local temp = 0;
+
that will cause list_people() to add the static 'et al.' text from Module:Citation/CS1/ConfigurationThis keeps 'et al.' out of the  
isxn_str = { isxn_str:byte(1, len) }; -- make a table of byte values '0' → 0x30 .. '9'  → 0x39, 'X' → 0x58
+
template's metadata. When this occurs, the page is added to a maintenance category.
len = len+1; -- adjust to be a loop counter
 
for i, v in ipairs( isxn_str ) do -- loop through all of the bytes and calculate the checksum
 
if v == string.byte( "X" ) then -- if checkdigit is X (compares the byte value of 'X' which is 0x58)
 
temp = temp + 10*( len - i ); -- it represents 10 decimal
 
else
 
temp = temp + tonumber( string.char(v) )*(len-i);
 
end
 
end
 
return temp % 11 == 0; -- returns true if calculation result is zero
 
end
 
 
 
 
 
--[[--------------------------< IS _ V A L I D _ I S X N _ 1 3 >----------------------------------------------
 
 
 
ISBN-13 and ISMN validator code calculates checksum across all 13 isbn/ismn digits including the check digit.
 
If the number is valid, the result will be 0. Before calling this function, isbn-13/ismn must be checked for length
 
and stripped of dashes, spaces and other non-isxn-13 characters.
 
  
 
]]
 
]]
  
local function is_valid_isxn_13 (isxn_str)
+
local function extract_names(args, list_name)
local temp=0;
+
local names = {}; -- table of names
+
local last; -- individual name components
isxn_str = { isxn_str:byte(1, 13) }; -- make a table of byte values '0' → 0x30 .. '9'  → 0x39
+
local first;
for i, v in ipairs( isxn_str ) do
+
local link;
temp = temp + (3 - 2*(i % 2)) * tonumber( string.char(v) ); -- multiply odd index digits by 1, even index digits by 3 and sum; includes check digit
+
local mask;
end
+
local i = 1; -- loop counter/indexer
return temp % 10 == 0; -- sum modulo 10 is zero when isbn-13/ismn is correct
+
local n = 1; -- output table indexer
end
+
local count = 0; -- used to count the number of times we haven't found a |last= (or alias for authors, |editor-last or alias for editors)
 +
local etal=false; -- return value set to true when we find some form of et al. in an author parameter
  
--[[--------------------------< C H E C K _ I S B N >------------------------------------------------------------
+
local err_msg_list_name = list_name:match ("(%w+)List") .. 's list'; -- modify AuthorList or EditorList for use in error messages if necessary
 +
while true do
 +
last = select_one( args, cfg.aliases[list_name .. '-Last'], 'redundant_parameters', i ); -- search through args for name components beginning at 1
 +
first = select_one( args, cfg.aliases[list_name .. '-First'], 'redundant_parameters', i );
 +
link = select_one( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i );
 +
mask = select_one( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i );
  
Determines whether an ISBN string is valid
+
last, etal = name_has_etal (last, etal, false); -- find and remove variations on et al.
 +
first, etal = name_has_etal (first, etal, false); -- find and remove variations on et al.
  
]]
+
if first and not last then -- if there is a firstn without a matching lastn
 +
table.insert( z.message_tail, { set_error( 'first_missing_last', {err_msg_list_name, i}, true ) } ); -- add this error message
 +
elseif not first and not last then -- if both firstn and lastn aren't found, are we done?
 +
count = count + 1; -- number of times we haven't found last and first
 +
if 2 <= count then -- two missing names and we give up
 +
break; -- normal exit or there is a two-name hole in the list; can't tell which
 +
end
 +
else -- we have last with or without a first
 +
link_title_ok (link, list_name:match ("(%w+)List"):lower() .. '-link' .. i, last, list_name:match ("(%w+)List"):lower() .. '-last' .. i); -- check for improper wikimarkup
  
local function check_isbn( isbn_str )
+
names[n] = {last = last, first = first, link = link, mask = mask, corporate=false}; -- add this name to our names list (corporate for |vauthors= only)
if nil ~= isbn_str:match("[^%s-0-9X]") then return false; end -- fail if isbn_str contains anything but digits, hyphens, or the uppercase X
+
n = n + 1; -- point to next location in the names table
isbn_str = isbn_str:gsub( "-", "" ):gsub( " ", "" ); -- remove hyphens and spaces
+
if 1 == count then -- if the previous name was missing
local len = isbn_str:len();
+
table.insert( z.message_tail, { set_error( 'missing_name', {err_msg_list_name, i-1}, true ) } ); -- add this error message
+
end
if len ~= 10 and len ~= 13 then
+
count = 0; -- reset the counter, we're looking for two consecutive missing names
return false;
+
end
end
+
i = i + 1; -- point to next args location
 
 
if len == 10 then
 
if isbn_str:match( "^%d*X?$" ) == nil then return false; end
 
return is_valid_isxn(isbn_str, 10);
 
else
 
local temp = 0;
 
if isbn_str:match( "^97[89]%d*$" ) == nil then return false; end -- isbn13 begins with 978 or 979; ismn begins with 979
 
return is_valid_isxn_13 (isbn_str);
 
 
end
 
end
 +
 +
return names, etal; -- all done, return our list of names
 
end
 
end
  
--[[--------------------------< C H E C K _ I S M N >------------------------------------------------------------
+
--[[--------------------------< G E T _ I S O 6 3 9 _ C O D E >------------------------------------------------
  
Determines whether an ISMN string is validSimilar to isbn-13, ismn is 13 digits begining 979-0-... and uses the
+
Validates language names provided in |language= parameter if not an ISO639-1 codeHandles the special case that is Norwegian where
same check digit calculations.  See http://www.ismn-international.org/download/Web_ISMN_Users_Manual_2008-6.pdf
+
ISO639-1 code 'no' is mapped to language name 'Norwegian Bokmål' by Extention:CLDR.
section 2, pages 9–12.
 
  
]]
+
Returns the language name and associated ISO639-1 code.  Because case of the source may be incorrect or different from the case that Wikimedia
 +
uses, the name comparisons are done in lower case and when a match is found, the Wikimedia version (assumed to be correct) is returned along
 +
with the code.  When there is no match, we return the original language name string.
  
local function ismn (id)
+
mw.language.fetchLanguageNames() will return a list of languages that aren't part of ISO639-1. Names that aren't ISO639-1 but that are included
local handler = cfg.id_handlers['ISMN'];
+
in the list will be found if that name is provided in the |language= parameter. For example, if |language=Samaritan Aramaic, that name will be
local text;
+
found with the associated code 'sam', not an ISO639-1 code.  When names are found and the associated code is not two characters, this function
local valid_ismn = true;
+
returns only the Wikimedia language name.
  
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and endashes from the ismn
+
Adapted from code taken from Module:Check ISO 639-1.
  
if 13 ~= id:len() or id:match( "^9790%d*$" ) == nil then -- ismn must be 13 digits and begin 9790
+
]]
valid_ismn = false;
+
 
else
+
local function get_iso639_code (lang)
valid_ismn=is_valid_isxn_13 (id); -- validate ismn
+
if 'norwegian' == lang:lower() then -- special case related to Wikimedia remap of code 'no' at Extension:CLDR
 +
return 'Norwegian', 'no'; -- Make sure rendered version is properly capitalized
 
end
 
end
 
-- text = internal_link_id({link = handler.link, label = handler.label, -- use this (or external version) when there is some place to link to
 
-- prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
 
 
text="[[" .. handler.link .. "|" .. handler.label .. "]]" .. handler.separator .. id; -- because no place to link to yet
 
 
if false == valid_ismn then
 
text = text .. ' ' .. set_error( 'bad_ismn' ) -- add an error message if the issn is invalid
 
end
 
 
 
return text;
+
local languages = mw.language.fetchLanguageNames('en', 'all') -- get a list of language names known to Wikimedia
 +
-- ('all' is required for North Ndebele, South Ndebele, and Ojibwa)
 +
local langlc = mw.ustring.lower(lang); -- lower case version for comparisons
 +
 +
for code, name in pairs(languages) do -- scan the list to see if we can find our language
 +
if langlc == mw.ustring.lower(name) then
 +
if 2 ~= code:len() then -- ISO639-1 codes only
 +
return name; -- so return the name but not the code
 +
end
 +
return name, code; -- found it, return name to ensure proper capitalization and the ISO639-1 code
 +
end
 +
end
 +
return lang; -- not valid language; return language in original case and nil for ISO639-1 code
 
end
 
end
  
--[[--------------------------< I S S N >----------------------------------------------------------------------
+
--[[--------------------------< L A N G U A G E _ P A R A M E T E R >------------------------------------------
  
Validate and format an issnThis code fixes the case where an editor has included an ISSN in the citation but has separated the two groups of four
+
Get language name from ISO639-1 code value providedIf a code is valid use the returned name; if not, then use the value that was provided with the language parameter.
digits with a space. When that condition occurred, the resulting link looked like this:
 
  
|issn=0819 4327 gives: [http://www.worldcat.org/issn/0819 4327 0819 4327] -- can't have spaces in an external link
+
There is an exceptionThere are three ISO639-1 codes for Norewegian language variantsThere are two official variants: Norwegian Bokmål (code 'nb') and
+
Norwegian Nynorsk (code 'nn').  The third, code 'no',  is defined by ISO639-1 as 'Norwegian' though in Norway this is pretty much meaningless.  However, it appears
This code now prevents that by inserting a hyphen at the issn midpoint.  It also validates the issn for length and makes sure that the checkdigit agrees
+
that on enwiki, editors are for the most part unaware of the nb and nn variants (compare page counts for these variants at Category:Articles with non-English-language external links.
with the calculated valueIncorrect length (8 digits), characters other than 0-9 and X, or checkdigit / calculated value mismatch will all cause a check issn
 
error message.  The issn is always displayed with a hyphen, even if the issn was given as a single group of 8 digits.
 
  
]]
+
Because Norwegian Bokmål is the most common language variant, Media wiki has been modified to return Norwegian Bokmål for ISO639-1 code 'no'. Here we undo that and
 +
return 'Norwegian' when editors use |language=no.  We presume that editors don't know about the variants or can't descriminate between them.
  
local function issn(id)
+
See Help talk:Citation Style_1#An ISO 639-1 language name test
local issn_copy = id; -- save a copy of unadulterated issn; use this version for display if issn does not validate
 
local handler = cfg.id_handlers['ISSN'];
 
local text;
 
local valid_issn = true;
 
  
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and endashes from the issn
+
When |language= contains a valid ISO639-1 code, the page is assigned to the category for that code: Category:Norwegian-language sources (no) if
 +
the page is a mainspace page and the ISO639-1 code is not 'en'.  Similarly, if the  parameter is |language=Norwegian, it will be categorized in the same way.
  
if 8 ~= id:len() or nil == id:match( "^%d*X?$" ) then -- validate the issn: 8 digits long, containing only 0-9 or X in the last position
+
This function supports multiple languages in the form |language=nb, French, th where the language names or codes are separated from each other by commas.
valid_issn=false; -- wrong length or improper character
 
else
 
valid_issn=is_valid_isxn(id, 8); -- validate issn
 
end
 
  
if true == valid_issn then
+
]]
id = string.sub( id, 1, 4 ) .. "-" .. string.sub( id, 5 ); -- if valid, display correctly formatted version
 
else
 
id = issn_copy; -- if not valid, use the show the invalid issn with error message
 
end
 
 
text = external_link_id({link = handler.link, label = handler.label,
 
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
 
 
if false == valid_issn then
 
text = text .. ' ' .. set_error( 'bad_issn' ) -- add an error message if the issn is invalid
 
end
 
 
return text
 
end
 
  
--[[--------------------------< A M A Z O N >------------------------------------------------------------------
+
local function language_parameter (lang)
 +
local code; -- the ISO639-1 two character code
 +
local name; -- the language name
 +
local language_list = {}; -- table of language names to be rendered
 +
local names_table = {}; -- table made from the value assigned to |language=
  
Formats a link to Amazon. Do simple error checking: asin must be mix of 10 numeric or uppercase alpha
+
names_table = mw.text.split (lang, '%s*,%s*'); -- names should be a comma separated list
characters. If a mix, first character must be uppercase alpha; if all numeric, asins must be 10-digit
 
isbn. If 10-digit isbn, add a maintenance category so a bot or awb script can replace |asin= with |isbn=.
 
Error message if not 10 characters, if not isbn10, if mixed and first character is a digit.
 
  
]]
+
for _, lang in ipairs (names_table) do -- reuse lang
  
local function amazon(id, domain)
+
if lang:match ('^%a%a%-') then -- strip ietf language tags from code
local err_cat = ""
+
lang = lang:match ('(%a%a)%-') -- keep only 639-1 code portion to lang; TODO: do something with 3166 alpha 2 country code?
 
+
end
if not id:match("^[%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u]$") then
+
if 2 == lang:len() then -- ISO639-1 language code are 2 characters (fetchLanguageName also supports 3 character codes)
err_cat =  ' ' .. set_error ('bad_asin'); -- asin is not a mix of 10 uppercase alpha and numeric characters
+
name = mw.language.fetchLanguageName( lang:lower(), "en" ); -- get ISO 639-1 language name if Language is a proper code
else
 
if id:match("^%d%d%d%d%d%d%d%d%d[%dX]$") then -- if 10-digit numeric (or 9 digits with terminal X)
 
if check_isbn( id ) then -- see if asin value is isbn10
 
add_maint_cat ('ASIN');
 
elseif not is_set (err_cat) then
 
err_cat = ' ' .. set_error ('bad_asin'); -- asin is not isbn10
 
end
 
elseif not id:match("^%u[%d%u]+$") then
 
err_cat =  ' ' .. set_error ('bad_asin'); -- asin doesn't begin with uppercase alpha
 
 
end
 
end
end
 
if not is_set(domain) then
 
domain = "com";
 
elseif in_array (domain, {'jp', 'uk'}) then -- Japan, United Kingdom
 
domain = "co." .. domain;
 
elseif in_array (domain, {'au', 'br', 'mx'}) then -- Australia, Brazil, Mexico
 
domain = "com." .. domain;
 
end
 
local handler = cfg.id_handlers['ASIN'];
 
return external_link_id({link=handler.link,
 
label=handler.label, prefix=handler.prefix .. domain .. "/dp/",
 
id=id, encode=handler.encode, separator = handler.separator}) .. err_cat;
 
end
 
 
--[[--------------------------< A R X I V >--------------------------------------------------------------------
 
 
See: http://arxiv.org/help/arxiv_identifier
 
 
format and error check arXiv identifier.  There are three valid forms of the identifier:
 
the first form, valid only between date codes 9108 and 0703 is:
 
arXiv:<archive>.<class>/<date code><number><version>
 
where:
 
<archive> is a string of alpha characters - may be hyphenated; no other punctuation
 
<class> is a string of alpha characters - may be hyphenated; no other punctuation
 
<date code> is four digits in the form YYMM where YY is the last two digits of the four-digit year and MM is the month number January = 01
 
first digit of YY for this form can only 9 and 0
 
<number> is a three-digit number
 
<version> is a 1 or more digit number preceded with a lowercase v; no spaces (undocumented)
 
 
 
the second form, valid from April 2007 through December 2014 is:
+
if is_set (name) then -- if Language specified a valid ISO639-1 code
arXiv:<date code>.<number><version>
+
code = lang:lower(); -- save it
where:
+
else
<date code> is four digits in the form YYMM where YY is the last two digits of the four-digit year and MM is the month number January = 01
+
name, code = get_iso639_code (lang); -- attempt to get code from name (assign name here so that we are sure of proper capitalization)
<number> is a four-digit number
+
end
<version> is a 1 or more digit number preceded with a lowercase v; no spaces
 
 
 
the third form, valid from January 2015 is:
 
arXiv:<date code>.<number><version>
 
where:
 
<date code> and <version> are as defined for 0704-1412
 
<number> is a five-digit number
 
]]
 
 
 
local function arxiv (id, class)
 
local handler = cfg.id_handlers['ARXIV'];
 
local year, month, version;
 
local err_cat = '';
 
local text;
 
 
 
if id:match("^%a[%a%.%-]+/[90]%d[01]%d%d%d%d$") or id:match("^%a[%a%.%-]+/[90]%d[01]%d%d%d%dv%d+$") then -- test for the 9108-0703 format w/ & w/o version
+
if is_set (code) then
year, month = id:match("^%a[%a%.%-]+/([90]%d)([01]%d)%d%d%d[v%d]*$");
+
if 'no' == code then name = 'Norwegian' end; -- override wikimedia when code is 'no'
year = tonumber(year);
+
if 'en' ~= code then -- English not the language
month = tonumber(month);
+
add_prop_cat ('foreign_lang_source', {name, code})
if ((not (90 < year or 8 > year)) or (1 > month or 12 < month)) or -- if invalid year or invalid month
+
end
((91 == year and 7 > month) or (7 == year and 3 < month)) then -- if years ok, are starting and ending months ok?
+
else
err_cat = ' ' .. set_error( 'bad_arxiv' ); -- set error message
+
add_maint_cat ('unknown_lang'); -- add maint category if not already added
 
end
 
end
elseif id:match("^%d%d[01]%d%.%d%d%d%d$") or id:match("^%d%d[01]%d%.%d%d%d%dv%d+$") then -- test for the 0704-1412 w/ & w/o version
+
year, month = id:match("^(%d%d)([01]%d)%.%d%d%d%d[v%d]*$");
+
table.insert (language_list, name);
year = tonumber(year);
+
name = ''; -- so we can reuse it
month = tonumber(month);
+
end
if ((7 > year) or (14 < year) or (1 > month or 12 < month)) or -- is year invalid or is month invalid? (doesn't test for future years)
+
((7 == year) and (4 > month)) then --or -- when year is 07, is month invalid (before April)?
+
code = #language_list -- reuse code as number of languages in the list
err_cat = ' ' .. set_error( 'bad_arxiv' ); -- set error message
+
if 2 >= code then
end
+
name = table.concat (language_list, ' and ') -- insert '<space>and<space>' between two language names
elseif id:match("^%d%d[01]%d%.%d%d%d%d%d$") or id:match("^%d%d[01]%d%.%d%d%d%d%dv%d+$") then -- test for the 1501- format w/ & w/o version
+
elseif 2 < code then
year, month = id:match("^(%d%d)([01]%d)%.%d%d%d%d%d[v%d]*$");
+
language_list[code] = 'and ' .. language_list[code]; -- prepend last name with 'and<space>'
year = tonumber(year);
+
name = table.concat (language_list, ', ') -- and concatenate with '<comma><space>' separators
month = tonumber(month);
 
if ((15 > year) or (1 > month or 12 < month)) then -- is year invalid or is month invalid? (doesn't test for future years)
 
err_cat = ' ' .. set_error( 'bad_arxiv' ); -- set error message
 
end
 
else
 
err_cat = ' ' .. set_error( 'bad_arxiv' ); -- arXiv id doesn't match any format
 
 
end
 
end
 
+
if 'English' == name then
text = external_link_id({link = handler.link, label = handler.label,
+
return ''; -- if one language and that language is English return an empty string (no annotation)
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
 
 
 
if is_set (class) then
 
class = ' [[' .. '//arxiv.org/archive/' .. class .. ' ' .. class .. ']]'; -- external link within square brackets, not wikilink
 
else
 
class = ''; -- empty string for concatenation
 
 
end
 
end
+
return (" " .. wrap_msg ('language', name)); -- otherwise wrap with '(in ...)'
return text .. class;
 
 
end
 
end
  
--[[
+
--[[--------------------------< S E T _ C S 1 _ S T Y L E >----------------------------------------------------
lccn normalization (http://www.loc.gov/marc/lccn-namespace.html#normalization)
+
 
1. Remove all blanks.
+
Set style settings for CS1 citation templates. Returns separator and postscript settings
2. If there is a forward slash (/) in the string, remove it, and remove all characters to the right of the forward slash.
 
3. If there is a hyphen in the string:
 
a. Remove it.
 
b. Inspect the substring following (to the right of) the (removed) hyphen. Then (and assuming that steps 1 and 2 have been carried out):
 
1. All these characters should be digits, and there should be six or less. (not done in this function)
 
2. If the length of the substring is less than 6, left-fill the substring with zeroes until the length is six.
 
  
Returns a normalized lccn for lccn() to validate.  There is no error checking (step 3.b.1) performed in this function.
 
 
]]
 
]]
  
local function normalize_lccn (lccn)
+
local function set_cs1_style (ps)
lccn = lccn:gsub ("%s", ""); -- 1. strip whitespace
+
if not is_set (ps) then -- unless explicitely set to something
 
+
ps = '.'; -- terminate the rendered citation with a period
if nil ~= string.find (lccn,'/') then
 
lccn = lccn:match ("(.-)/"); -- 2. remove forward slash and all character to the right of it
 
 
end
 
end
 +
return '.', ps; -- separator is a full stop
 +
end
 +
 +
--[[--------------------------< S E T _ C S 2 _ S T Y L E >----------------------------------------------------
 +
 +
Set style settings for CS2 citation templates. Returns separator, postscript, ref settings
  
local prefix
+
]]
local suffix
 
prefix, suffix = lccn:match ("(.+)%-(.+)"); -- 3.a remove hyphen by splitting the string into prefix and suffix
 
  
if nil ~= suffix then -- if there was a hyphen
+
local function set_cs2_style (ps, ref)
suffix=string.rep("0", 6-string.len (suffix)) .. suffix; -- 3.b.2 left fill the suffix with 0s if suffix length less than 6
+
if not is_set (ps) then -- if |postscript= has not been set, set cs2 default
lccn=prefix..suffix; -- reassemble the lccn
+
ps = ''; -- make sure it isn't nil
 
end
 
end
+
if not is_set (ref) then -- if |ref= is not set
return lccn;
+
ref = "harv"; -- set default |ref=harv
 
end
 
end
 +
return ',', ps, ref; -- separator is a comma
 +
end
  
--[[
+
--[[--------------------------< G E T _ S E T T I N G S _ F R O M _ C I T E _ C L A S S >----------------------
Format LCCN link and do simple error checking.  LCCN is a character string 8-12 characters long. The length of the LCCN dictates the character type of the first 1-3 characters; the
 
rightmost eight are always digits. http://info-uri.info/registry/OAIHandler?verb=GetRecord&metadataPrefix=reg&identifier=info:lccn/
 
  
length = 8 then all digits
+
When |mode= is not set or when its value is invalid, use config.CitationClass and parameter values to establish
length = 9 then lccn[1] is lower case alpha
+
rendered style.
length = 10 then lccn[1] and lccn[2] are both lower case alpha or both digits
 
length = 11 then lccn[1] is lower case alpha, lccn[2] and lccn[3] are both lower case alpha or both digits
 
length = 12 then lccn[1] and lccn[2] are both lower case alpha
 
  
 
]]
 
]]
  
local function lccn(lccn)
+
local function get_settings_from_cite_class (ps, ref, cite_class)
local handler = cfg.id_handlers['LCCN'];
+
local sep;
local err_cat =  ''; -- presume that LCCN is valid
+
if (cite_class == "citation") then -- for citation templates (CS2)
local id = lccn; -- local copy of the lccn
+
sep, ps, ref = set_cs2_style (ps, ref);
 
+
else -- not a citation template so CS1
id = normalize_lccn (id); -- get canonical form (no whitespace, hyphens, forward slashes)
+
sep, ps = set_cs1_style (ps);
local len = id:len(); -- get the length of the lccn
 
 
 
if 8 == len then
 
if id:match("[^%d]") then -- if LCCN has anything but digits (nil if only digits)
 
err_cat = ' ' .. set_error( 'bad_lccn' ); -- set an error message
 
end
 
elseif 9 == len then -- LCCN should be adddddddd
 
if nil == id:match("%l%d%d%d%d%d%d%d%d") then -- does it match our pattern?
 
err_cat = ' ' .. set_error( 'bad_lccn' ); -- set an error message
 
end
 
elseif 10 == len then -- LCCN should be aadddddddd or dddddddddd
 
if id:match("[^%d]") then -- if LCCN has anything but digits (nil if only digits) ...
 
if nil == id:match("^%l%l%d%d%d%d%d%d%d%d") then -- ... see if it matches our pattern
 
err_cat = ' ' .. set_error( 'bad_lccn' ); -- no match, set an error message
 
end
 
end
 
elseif 11 == len then -- LCCN should be aaadddddddd or adddddddddd
 
if not (id:match("^%l%l%l%d%d%d%d%d%d%d%d") or id:match("^%l%d%d%d%d%d%d%d%d%d%d")) then -- see if it matches one of our patterns
 
err_cat = ' ' .. set_error( 'bad_lccn' ); -- no match, set an error message
 
end
 
elseif 12 == len then -- LCCN should be aadddddddddd
 
if not id:match("^%l%l%d%d%d%d%d%d%d%d%d%d") then -- see if it matches our pattern
 
err_cat = ' ' .. set_error( 'bad_lccn' ); -- no match, set an error message
 
end
 
else
 
err_cat = ' ' .. set_error( 'bad_lccn' ); -- wrong length, set an error message
 
 
end
 
end
  
if not is_set (err_cat) and nil ~= lccn:find ('%s') then
+
return sep, ps, ref -- return them all
err_cat = ' ' .. set_error( 'bad_lccn' ); -- lccn contains a space, set an error message
 
end
 
 
 
return external_link_id({link = handler.link, label = handler.label,
 
prefix=handler.prefix,id=lccn,separator=handler.separator, encode=handler.encode}) .. err_cat;
 
 
end
 
end
  
--[[
+
--[[--------------------------< S E T _ S T Y L E >------------------------------------------------------------
Format PMID and do simple error checkingPMIDs are sequential numbers beginning at 1 and counting up. This code checks the PMID to see that it
+
 
contains only digits and is less than test_limit; the value in local variable test_limit will need to be updated periodically as more PMIDs are issued.
+
Establish basic style settings to be used when rendering the citationUses |mode= if set and valid or uses
 +
config.CitationClass from the template's #invoke: to establish style.
 +
 
 
]]
 
]]
  
local function pmid(id)
+
local function set_style (mode, ps, ref, cite_class)
local test_limit = 30000000; -- update this value as PMIDs approach
+
local sep;
local handler = cfg.id_handlers['PMID'];
+
if 'cs2' == mode then -- if this template is to be rendered in CS2 (citation) style
local err_cat =  ''; -- presume that PMID is valid
+
sep, ps, ref = set_cs2_style (ps, ref);
+
elseif 'cs1' == mode then -- if this template is to be rendered in CS1 (cite xxx) style
if id:match("[^%d]") then -- if PMID has anything but digits
+
sep, ps = set_cs1_style (ps);
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
+
else -- anything but cs1 or cs2
else -- PMID is only digits
+
sep, ps, ref = get_settings_from_cite_class (ps, ref, cite_class); -- get settings based on the template's CitationClass
local id_num = tonumber(id); -- convert id to a number for range testing
+
end
if 1 > id_num or test_limit < id_num then -- if PMID is outside test limit boundaries
+
if 'none' == ps:lower() then -- if assigned value is 'none' then
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
+
ps = ''; -- set to empty string
end
 
 
end
 
end
 
 
return external_link_id({link = handler.link, label = handler.label,
+
return sep, ps, ref
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
 
 
end
 
end
  
--[[--------------------------< I S _ E M B A R G O E D >------------------------------------------------------
+
--[=[-------------------------< I S _ P D F >------------------------------------------------------------------
  
Determines if a PMC identifier's online version is embargoed. Compares the date in |embargo= against today's date. If embargo date is
+
Determines if a url has the file extension that is one of the pdf file extensions used by [[MediaWiki:Common.css]] when
in the future, returns the content of |embargo=; otherwise, returns and empty string because the embargo has expired or because
+
applying the pdf icon to external links.
|embargo= was not set in this cite.
 
  
]]
+
returns true if file extension is one of the recognized extension, else false
 +
 
 +
]=]
  
local function is_embargoed (embargo)
+
local function is_pdf (url)
if is_set (embargo) then
+
return url:match ('%.pdf[%?#]?') or url:match ('%.PDF[%?#]?');
local lang = mw.getContentLanguage();
 
local good1, embargo_date, good2, todays_date;
 
good1, embargo_date = pcall( lang.formatDate, lang, 'U', embargo );
 
good2, todays_date = pcall( lang.formatDate, lang, 'U' );
 
 
if good1 and good2 then -- if embargo date and today's date are good dates
 
if tonumber( embargo_date ) >= tonumber( todays_date ) then -- is embargo date is in the future?
 
return embargo; -- still embargoed
 
else
 
add_maint_cat ('embargo')
 
return ''; -- unset because embargo has expired
 
end
 
end
 
end
 
return ''; -- |embargo= not set return empty string
 
 
end
 
end
  
--[[--------------------------< P M C >------------------------------------------------------------------------
+
--[[--------------------------< S T Y L E _ F O R M A T >------------------------------------------------------
  
Format a PMC, do simple error checking, and check for embargoed articles.
+
Applies css style to |format=, |chapter-format=, etcAlso emits an error message if the format parameter does
 
+
not have a matching url parameterIf the format parameter is not set and the url contains a file extension that
The embargo parameter takes a date for a value. If the embargo date is in the future the PMC identifier will not
+
is recognized as a pdf document by MediaWiki's commons.css, this code will set the format parameter to (PDF) with
be linked to the articleIf the embargo date is today or in the past, or if it is empty or omitted, then the
+
the appropriate styling.
PMC identifier is linked to the article through the link at cfg.id_handlers['PMC'].prefix.
 
 
 
PMC embargo date testing is done in function is_embargoed () which is called earlier because when the citation
 
has |pmc=<value> but does not have a |url= then |title= is linked with the PMC linkFunction is_embargoed ()
 
returns the embargo date if the PMC article is still embargoed, otherwise it returns an empty string.
 
 
 
PMCs are sequential numbers beginning at 1 and counting up.  This code checks the PMC to see that it contains only digits and is less
 
than test_limit; the value in local variable test_limit will need to be updated periodically as more PMCs are issued.
 
  
 
]]
 
]]
  
local function pmc(id, embargo)
+
local function style_format (format, url, fmt_param, url_param)
local test_limit = 5000000; -- update this value as PMCs approach
+
if is_set (format) then
local handler = cfg.id_handlers['PMC'];
+
format = wrap_style ('format', format); -- add leading space, parenthases, resize
local err_cat =  ''; -- presume that PMC is valid
+
if not is_set (url) then
+
format = format .. set_error( 'format_missing_url', {fmt_param, url_param} ); -- add an error message
local text;
 
 
 
if id:match("[^%d]") then -- if PMC has anything but digits
 
err_cat = ' ' .. set_error( 'bad_pmc' ); -- set an error message
 
else -- PMC is only digits
 
local id_num = tonumber(id); -- convert id to a number for range testing
 
if 1 > id_num or test_limit < id_num then -- if PMC is outside test limit boundaries
 
err_cat = ' ' .. set_error( 'bad_pmc' ); -- set an error message
 
 
end
 
end
end
+
elseif is_pdf (url) then -- format is not set so if url is a pdf file then
+
format = wrap_style ('format', 'PDF'); -- set format to pdf
if is_set (embargo) then -- is PMC is still embargoed?
 
text="[[" .. handler.link .. "|" .. handler.label .. "]]:" .. handler.separator .. id .. err_cat; -- still embargoed so no external link
 
 
else
 
else
text = external_link_id({link = handler.link, label = handler.label, -- no embargo date or embargo has expired, ok to link to article
+
format = ''; -- empty string for concatenation
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
 
 
end
 
end
return text;
+
return format;
 
end
 
end
  
-- Formats a DOI and checks for DOI errors.
+
--[[--------------------------< G E T _ D I S P L A Y _ A U T H O R S _ E D I T O R S >------------------------
  
-- DOI names contain two parts: prefix and suffix separated by a forward slash.
+
Returns a number that defines the number of names displayed for author and editor name lists and a boolean flag
--  Prefix: directory indicator '10.' followed by a registrant code
+
to indicate when et al. should be appended to the name list.
--  Suffix: character string of any length chosen by the registrant
 
  
-- This function checks a DOI name for: prefix/suffix.  If the doi name contains spaces or endashes,
+
When the value assigned to |display-xxxxors= is a number greater than or equal to zero, return the number and
-- or, if it ends with a period or a comma, this function will emit a bad_doi error message.
+
the previous state of the 'etal' flag (false by default but may have been set to true if the name list contains
 +
some variant of the text 'et al.').
  
-- DOI names are case-insensitive and can incorporate any printable Unicode characters so the test for spaces, endash,
+
When the value assigned to |display-xxxxors= is the keyword 'etal', return a number that is one greater than the
-- and terminal punctuation may not be technically correct but it appears, that in practice these characters are rarely if ever used in doi names.
+
number of authors in the list and set the 'etal' flag true.  This will cause the list_people() to display all of
 +
the names in the name list followed by 'et al.'
  
local function doi(id, inactive)
+
In all other cases, returns nil and the previous state of the 'etal' flag.
local cat = ""
 
local handler = cfg.id_handlers['DOI'];
 
 
local text;
 
if is_set(inactive) then
 
local inactive_year = inactive:match("%d%d%d%d") or ''; -- try to get the year portion from the inactive date
 
text = "[[" .. handler.link .. "|" .. handler.label .. "]]:" .. id;
 
if is_set(inactive_year) then
 
table.insert( z.error_categories, "Pages with DOIs inactive since " .. inactive_year );
 
else
 
table.insert( z.error_categories, "Pages with inactive DOIs" ); -- when inactive doesn't contain a recognizable year
 
end
 
inactive = " (" .. cfg.messages['inactive'] .. " " .. inactive .. ")"
 
else
 
text = external_link_id({link = handler.link, label = handler.label,
 
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
 
inactive = ""
 
end
 
  
if nil == id:match("^10%.[^%s–]-/[^%s–]-[^%.,]$") then -- doi must begin with '10.', must contain a fwd slash, must not contain spaces or endashes, and must not end with period or comma
+
inputs:
cat = ' ' .. set_error( 'bad_doi' );
+
max: A['DisplayAuthors'] or A['DisplayEditors']; a number or some flavor of etal
end
+
count: #a or #e
return text .. inactive .. cat
+
list_name: 'authors' or 'editors'
end
+
etal: author_etal or editor_etal
 
 
 
 
--[[--------------------------< O P E N L I B R A R Y >--------------------------------------------------------
 
 
 
Formats an OpenLibrary link, and checks for associated errors.
 
  
 
]]
 
]]
local function openlibrary(id)
 
local code = id:match("^%d+([AMW])$"); -- only digits followed by 'A', 'M', or 'W'
 
local handler = cfg.id_handlers['OL'];
 
  
if ( code == "A" ) then
+
local function get_display_authors_editors (max, count, list_name, etal)
return external_link_id({link=handler.link, label=handler.label,
+
if is_set (max) then
prefix=handler.prefix .. 'authors/OL',
+
if 'etal' == max:lower():gsub("[ '%.]", '') then -- the :gsub() portion makes 'etal' from a variety of 'et al.' spellings and stylings
id=id, separator=handler.separator, encode = handler.encode})
+
max = count + 1; -- number of authors + 1 so display all author name plus et al.
elseif ( code == "M" ) then
+
etal = true; -- overrides value set by extract_names()
return external_link_id({link=handler.link, label=handler.label,
+
elseif max:match ('^%d+$') then -- if is a string of numbers
prefix=handler.prefix .. 'books/OL',
+
max = tonumber (max); -- make it a number
id=id, separator=handler.separator, encode = handler.encode})
+
if max >= count then -- if |display-xxxxors= value greater than or equal to number of authors/editors
elseif ( code == "W" ) then
+
add_maint_cat ('disp_auth_ed', list_name);
return external_link_id({link=handler.link, label=handler.label,
+
end
prefix=handler.prefix .. 'works/OL',
+
else -- not a valid keyword or number
id=id, separator=handler.separator, encode = handler.encode})
+
table.insert( z.message_tail, { set_error( 'invalid_param_val', {'display-' .. list_name, max}, true ) } ); -- add error message
else
+
max = nil; -- unset; as if |display-xxxxors= had not been set
return external_link_id({link=handler.link, label=handler.label,
+
end
prefix=handler.prefix .. 'OL',
 
id=id, separator=handler.separator, encode = handler.encode}) .. ' ' .. set_error( 'bad_ol' );
 
 
end
 
end
 +
 +
return max, etal;
 
end
 
end
  
 +
--[[--------------------------< E X T R A _ T E X T _ I N _ P A G E _ C H E C K >------------------------------
  
--[[--------------------------< M E S S A G E _ I D >----------------------------------------------------------
+
Adds page to Category:CS1 maint: extra text if |page= or |pages= has what appears to be some form of p. or pp.
 +
abbreviation in the first characters of the parameter content.
  
Validate and format a usenet message id. Simple error checking, looks for 'id-left@id-right' not enclosed in
+
check Page and Pages for extraneous p, p., pp, and pp. at start of parameter value:
'<' and/or '>' angle brackets.
+
good pattern: '^P[^%.P%l]' matches when |page(s)= begins PX or P# but not Px where x and X are letters and # is a dgiit
 +
bad pattern: '^[Pp][Pp]' matches matches when |page(s)= begins pp or pP or Pp or PP
  
 
]]
 
]]
  
local function message_id (id)
+
local function extra_text_in_page_check (page)
local handler = cfg.id_handlers['USENETID'];
+
-- local good_pattern = '^P[^%.P%l]';
 +
local good_pattern = '^P[^%.Pp]'; -- ok to begin with uppercase P: P7 (pg 7 of section P) but not p123 (page 123) TODO: add Gg for PG or Pg?
 +
-- local bad_pattern = '^[Pp][Pp]';
 +
local bad_pattern = '^[Pp]?[Pp]%.?[ %d]';
  
text = external_link_id({link = handler.link, label = handler.label,
+
if not page:match (good_pattern) and (page:match (bad_pattern) or  page:match ('^[Pp]ages?')) then
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
+
add_maint_cat ('extra_text');
+
end
if not id:match('^.+@.+$') or not id:match('^[^<].*[^>]$')then -- doesn't have '@' or has one or first or last character is '< or '>'
+
-- if Page:match ('^[Pp]?[Pp]%.?[ %d]') or Page:match ('^[Pp]ages?[ %d]') or
text = text .. ' ' .. set_error( 'bad_message_id' ) -- add an error message if the message id is invalid
+
-- Pages:match ('^[Pp]?[Pp]%.?[ %d]') or Pages:match ('^[Pp]ages?[ %d]') then
end  
+
-- add_maint_cat ('extra_text');
+
-- end
return text
 
 
end
 
end
  
--[[--------------------------< S E T _ T I T L E T Y P E >----------------------------------------------------
 
  
This function sets default title types (equivalent to the citation including |type=<default value>) for those templates that have defaults.
+
--[[--------------------------< P A R S E _ V A U T H O R S _ V E D I T O R S >--------------------------------
Also handles the special case where it is desirable to omit the title type from the rendered citation (|type=none).
 
  
]]
+
This function extracts author / editor names from |vauthors= or |veditors= and finds matching |xxxxor-maskn= and
 +
|xxxxor-linkn= in args.  It then returns a table of assembled names just as extract_names() does.
  
local function set_titletype (cite_class, title_type)
+
Author / editor names in |vauthors= or |veditors= must be in Vancouver system style. Corporate or institutional names
if is_set(title_type) then
+
may sometimes be required and because such names will often fail the is_good_vanc_name() and other format compliance
if "none" == title_type then
+
tests, are wrapped in doubled paranethese ((corporate name)) to suppress the format tests.
title_type = ""; -- if |type=none then type parameter not displayed
 
end
 
return title_type; -- if |type= has been set to any other value use that value
 
end
 
  
return cfg.title_types [cite_class] or ''; -- set template's default title type; else empty string for concatenation
+
This function sets the vancouver error when a reqired comma is missing and when there is a space between an author's initials.
end
 
 
 
--[[--------------------------< C L E A N _ I S B N >----------------------------------------------------------
 
 
 
Removes irrelevant text and dashes from ISBN number
 
Similar to that used for Special:BookSources
 
  
 
]]
 
]]
  
local function clean_isbn( isbn_str )
+
local function parse_vauthors_veditors (args, vparam, list_name)
return isbn_str:gsub( "[^-0-9X]", "" );
+
local names = {}; -- table of names assembled from |vauthors=, |author-maskn=, |author-linkn=
end
+
local v_name_table = {};
 +
local etal = false; -- return value set to true when we find some form of et al. vauthors parameter
 +
local last, first, link, mask;
 +
local corporate = false;
  
--[[--------------------------< E S C A P E _ L U A _ M A G I C _ C H A R S >----------------------------------
+
vparam, etal = name_has_etal (vparam, etal, true); -- find and remove variations on et al. do not categorize (do it here because et al. might have a period)
 +
if vparam:find ('%[%[') or vparam:find ('%]%]') then -- no wikilinking vauthors names
 +
add_vanc_error ();
 +
end
 +
v_name_table = mw.text.split(vparam, "%s*,%s*") -- names are separated by commas
  
Returns a string where all of lua's magic characters have been escaped. This is important because functions like
+
for i, v_name in ipairs(v_name_table) do
string.gsub() treat their pattern and replace strings as patterns, not literal strings.
+
if v_name:match ('^%(%(.+%)%)$') then -- corporate authors are wrapped in doubled parenthese to supress vanc formatting and error detection
]]
+
first = ''; -- set to empty string for concatenation and because it may have been set for previous author/editor
local function escape_lua_magic_chars (argument)
+
last = v_name:match ('^%(%((.+)%)%)$')
argument = argument:gsub("%%", "%%%%"); -- replace % with %%
+
corporate = true;
argument = argument:gsub("([%^%$%(%)%.%[%]%*%+%-%?])", "%%%1"); -- replace all other lua magic pattern characters
+
elseif string.find(v_name, "%s") then
return argument;
+
local lastfirstTable = {}
end
+
lastfirstTable = mw.text.split(v_name, "%s")
 
+
first = table.remove(lastfirstTable); -- removes and returns value of last element in table which should be author intials
--[[--------------------------< S T R I P _ A P O S T R O P H E _ M A R K U P >--------------------------------
+
last  = table.concat(lastfirstTable, " ") -- returns a string that is the concatenation of all other names that are not initials
 +
if mw.ustring.match (last, '%a+%s+%u+%s+%a+') or mw.ustring.match (v_name, ' %u %u$') then
 +
add_vanc_error (); -- matches last II last; the case when a comma is missing or a space between two intiials
 +
end
 +
else
 +
first = ''; -- set to empty string for concatenation and because it may have been set for previous author/editor
 +
last = v_name; -- last name or single corporate name?  Doesn't support multiword corporate names? do we need this?
 +
end
 +
 +
if is_set (first) and not mw.ustring.match (first, "^%u?%u$") then -- first shall contain one or two upper-case letters, nothing else
 +
add_vanc_error ();
 +
end
 +
-- this from extract_names ()
 +
link = select_one( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i );
 +
mask = select_one( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i );
 +
names[i] = {last = last, first = first, link = link, mask = mask, corporate=corporate}; -- add this assembled name to our names list
 +
end
 +
return names, etal; -- all done, return our list of names
 +
end
  
Strip wiki italic and bold markup from argument so that it doesn't contaminate COinS metadata.
+
--[[--------------------------< S E L E C T _ A U T H O R _ E D I T O R _ S O U R C E >------------------------
This function strips common patterns of apostrophe markup.  We presume that editors who have taken the time to
 
markup a title have, as a result, provided valid markup. When they don't, some single apostrophes are left behind.
 
  
]]
+
Select one of |authors=, |authorn= / |lastn / firstn=, or |vauthors= as the source of the author name list or
 +
select one of |editors=, |editorn= / editor-lastn= / |editor-firstn= or |veditors= as the source of the editor name list.
  
local function strip_apostrophe_markup (argument)
+
Only one of these appropriate three will be used.  The hierarchy is: |authorn= (and aliases) highest and |authors= lowest and
if not is_set (argument) then return argument; end
+
similarly, |editorn= (and aliases) highest and |editors= lowest
  
while true do
+
When looking for |authorn= / |editorn= parameters, test |xxxxor1= and |xxxxor2= (and all of their aliases); stops after the second
if argument:match ("%'%'%'%'%'") then -- bold italic (5)
+
test which mimicks the test used in extract_names() when looking for a hole in the author name list.  There may be a better
argument=argument:gsub("%'%'%'%'%'", ""); -- remove all instances of it
+
way to do this, I just haven't discovered what that way is.
elseif argument:match ("%'%'%'%'") then -- italic start and end without content (4)
 
argument=argument:gsub("%'%'%'%'", "");
 
elseif argument:match ("%'%'%'") then -- bold (3)
 
argument=argument:gsub("%'%'%'", "");
 
elseif argument:match ("%'%'") then -- italic (2)
 
argument=argument:gsub("%'%'", "");
 
else
 
break;
 
end
 
end
 
return argument; -- done
 
end
 
  
--[[--------------------------< M A K E _ C O I N S _ T I T L E >----------------------------------------------
+
Emits an error message when more than one xxxxor name source is provided.
  
Makes a title for COinS from Title and / or ScriptTitle (or any other name-script pairs)
+
In this function, vxxxxors = vauthors or veditors; xxxxors = authors or editors as appropriate.
  
Apostrophe markup (bold, italics) is stripped from each value so that the COinS metadata isn't correupted with strings
 
of %27%27...
 
 
]]
 
]]
  
local function make_coins_title (title, script)
+
local function select_author_editor_source (vxxxxors, xxxxors, args, list_name)
if is_set (title) then
+
local lastfirst = false;
title = strip_apostrophe_markup (title); -- strip any apostrophe markup
+
if select_one( args, cfg.aliases[list_name .. '-Last'], 'none', 1 ) or -- do this twice incase we have a first 1 without a last1
else
+
select_one( args, cfg.aliases[list_name .. '-Last'], 'none', 2 ) then
title=''; -- if not set, make sure title is an empty string
+
lastfirst=true;
 
end
 
end
if is_set (script) then
+
 
script = script:gsub ('^%l%l%s*:%s*', ''); -- remove language prefix if present (script value may now be empty string)
+
if (is_set (vxxxxors) and true == lastfirst) or -- these are the three error conditions
script = strip_apostrophe_markup (script); -- strip any apostrophe markup
+
(is_set (vxxxxors) and is_set (xxxxors)) or
else
+
(true == lastfirst and is_set (xxxxors)) then
script=''; -- if not set, make sure script is an empty string
+
local err_name;
 +
if 'AuthorList' == list_name then -- figure out which name should be used in error message
 +
err_name = 'author';
 +
else
 +
err_name = 'editor';
 +
end
 +
table.insert( z.message_tail, { set_error( 'redundant_parameters',
 +
{err_name .. '-name-list parameters'}, true ) } ); -- add error message
 
end
 
end
if is_set (title) and is_set (script) then
+
 
script = ' ' .. script; -- add a space before we concatenate
+
if true == lastfirst then return 1 end; -- return a number indicating which author name source to use
end
+
if is_set (vxxxxors) then return 2 end;
return title .. script; -- return the concatenation
+
if is_set (xxxxors) then return 3 end;
 +
return 1; -- no authors so return 1; this allows missing author name test to run in case there is a first without last
 
end
 
end
  
--[[--------------------------< G E T _ C O I N S _ P A G E S >------------------------------------------------
 
  
Extract page numbers from external wikilinks in any of the |page=, |pages=, or |at= parameters for use in COinS.
+
--[[--------------------------< I S _ V A L I D _ P A R A M E T E R _ V A L U E >------------------------------
 +
 
 +
This function is used to validate a parameter's assigned value for those parameters that have only a limited number
 +
of allowable values (yes, y, true, no, etc).  When the parameter value has not been assigned a value (missing or empty
 +
in the source template) the function refurns true.  If the parameter value is one of the list of allowed values returns
 +
true; else, emits an error message and returns false.
  
 
]]
 
]]
  
local function get_coins_pages (pages)
+
local function is_valid_parameter_value (value, name, possible)
local pattern;
+
if not is_set (value) then
if not is_set (pages) then return pages; end -- if no page numbers then we're done
+
return true; -- an empty parameter is ok
+
elseif in_array(value:lower(), possible) then
while true do
+
return true;
pattern = pages:match("%[(%w*:?//[^ ]+%s+)[%w%d].*%]"); -- pattern is the opening bracket, the url and following space(s): "[url "
+
else
if nil == pattern then break; end -- no more urls
+
table.insert( z.message_tail, { set_error( 'invalid_param_val', {name, value}, true ) } ); -- not an allowed value so add error message
pattern = escape_lua_magic_chars (pattern); -- pattern is not a literal string; escape lua's magic pattern characters
+
return false
pages = pages:gsub(pattern, ""); -- remove as many instances of pattern as possible
+
end
end
 
pages = pages:gsub("[%[%]]", ""); -- remove the brackets
 
pages = pages:gsub("–", "-" ); -- replace endashes with hyphens
 
pages = pages:gsub("&%w+;", "-" ); -- and replace html entities (&ndash; etc.) with hyphens; do we need to replace numerical entities like &#32; and the like?
 
return pages;
 
 
end
 
end
  
-- Gets the display text for a wikilink like [[A|B]] or [[B]] gives B
+
 
local function remove_wiki_link( str )
+
--[[--------------------------< T E R M I N A T E _ N A M E _ L I S T >----------------------------------------
return (str:gsub( "%[%[([^%[%]]*)%]%]", function(l)
+
 
return l:gsub( "^[^|]*|(.*)$", "%1" ):gsub("^%s*(.-)%s*$", "%1");
+
This function terminates a name list (author, contributor, editor) with a separator character (sepc) and a space
end));
+
when the last character is not a sepc character or when the last three characters are not sepc followed by two
 +
closing square brackets (close of a wikilink).  When either of these is true, the name_list is terminated with a
 +
single space character.
 +
 
 +
]]
 +
 
 +
local function terminate_name_list (name_list, sepc)
 +
if (string.sub (name_list,-1,-1) == sepc) or (string.sub (name_list,-3,-1) == sepc .. ']]') then -- if last name in list ends with sepc char
 +
return name_list .. " "; -- don't add another
 +
else
 +
return name_list .. sepc .. ' '; -- otherwise terninate the name list
 +
end
 
end
 
end
  
-- Converts a hyphen to a dash
 
local function hyphen_to_dash( str )
 
if not is_set(str) or str:match( "[%[%]{}<>]" ) ~= nil then
 
return str;
 
end
 
return str:gsub( '-', '–' );
 
end
 
  
--[[--------------------------< S A F E _ J O I N >------------------------------------------------------------
+
--[[-------------------------< F O R M A T _ V O L U M E _ I S S U E >----------------------------------------
  
Joins a sequence of strings together while checking for duplicate separation characters.
+
returns the concatenation of the formatted volume and issue parameters as a single string; or formatted volume
 +
or formatted issue, or an empty string if neither are set.
  
 
]]
 
]]
 
local function safe_join( tbl, duplicate_char )
 
--[[
 
Note: we use string functions here, rather than ustring functions.
 
 
 
This has considerably faster performance and should work correctly as
+
local function format_volume_issue (volume, issue, cite_class, origin, sepc, lower)
long as the duplicate_char is strict ASCII.  The strings
+
if not is_set (volume) and not is_set (issue) then
in tbl may be ASCII or UTF8.
+
return '';
]]
+
end
 +
 +
if 'magazine' == cite_class or (in_array (cite_class, {'citation', 'map'}) and 'magazine' == origin) then
 +
if is_set (volume) and is_set (issue) then
 +
return wrap_msg ('vol-no', {sepc, volume, issue}, lower);
 +
elseif is_set (volume) then
 +
return wrap_msg ('vol', {sepc, volume}, lower);
 +
else
 +
return wrap_msg ('issue', {sepc, issue}, lower);
 +
end
 +
end
 
 
local str = ''; -- the output string
+
local vol = '';
local comp = ''; -- what does 'comp' mean?
 
local end_chr = '';
 
local trim;
 
for _, value in ipairs( tbl ) do
 
if value == nil then value = ''; end
 
 
 
if str == '' then -- if output string is empty
+
if is_set (volume) then
str = value; -- assign value to it (first time through the loop)
+
if (4 < mw.ustring.len(volume)) then
elseif value ~= '' then
+
vol = substitute (cfg.messages['j-vol'], {sepc, volume});
if value:sub(1,1) == '<' then -- Special case of values enclosed in spans and other markup.
+
else
comp = value:gsub( "%b<>", "" ); -- remove html markup (<span>string</span> -> string)
+
vol = wrap_style ('vol-bold', hyphen_to_dash(volume));
else
+
end
comp = value;
+
end
end
+
if is_set (issue) then
-- typically duplicate_char is sepc
+
return vol .. substitute (cfg.messages['j-issue'], issue);
if comp:sub(1,1) == duplicate_char then -- is first charactier same as duplicate_char? why test first character?
+
end
--  Because individual string segments often (always?) begin with terminal punct for th
+
return vol;
--  preceding segment: 'First element' .. 'sepc next element' .. etc?
+
end
trim = false;
+
 
end_chr = str:sub(-1,-1); -- get the last character of the output string
+
 
-- str = str .. "<HERE(enchr=" .. end_chr.. ")" -- debug stuff?
 
if end_chr == duplicate_char then -- if same as separator
 
str = str:sub(1,-2); -- remove it
 
elseif end_chr == "'" then -- if it might be wikimarkup
 
if str:sub(-3,-1) == duplicate_char .. "''" then -- if last three chars of str are sepc''
 
str = str:sub(1, -4) .. "''"; -- remove them and add back ''
 
elseif str:sub(-5,-1) == duplicate_char .. "]]''" then -- if last five chars of str are sepc]]''
 
trim = true; -- why? why do this and next differently from previous?
 
elseif str:sub(-4,-1) == duplicate_char .. "]''" then -- if last four chars of str are sepc]''
 
trim = true; -- same question
 
end
 
elseif end_chr == "]" then -- if it might be wikimarkup
 
if str:sub(-3,-1) == duplicate_char .. "]]" then -- if last three chars of str are sepc]] wikilink
 
trim = true;
 
elseif str:sub(-2,-1) == duplicate_char .. "]" then -- if last two chars of str are sepc] external link
 
trim = true;
 
elseif str:sub(-4,-1) == duplicate_char .. "'']" then -- normal case when |url=something & |title=Title.
 
trim = true;
 
end
 
elseif end_chr == " " then -- if last char of output string is a space
 
if str:sub(-2,-1) == duplicate_char .. " " then -- if last two chars of str are <sepc><space>
 
str = str:sub(1,-3); -- remove them both
 
end
 
end
 
  
if trim then
 
if value ~= comp then -- value does not equal comp when value contains html markup
 
local dup2 = duplicate_char;
 
if dup2:match( "%A" ) then dup2 = "%" .. dup2; end -- if duplicate_char not a letter then escape it
 
 
value = value:gsub( "(%b<>)" .. dup2, "%1", 1 ) -- remove duplicate_char if it follows html markup
 
else
 
value = value:sub( 2, -1 ); -- remove duplicate_char when it is first character
 
end
 
end
 
end
 
str = str .. value; --add it to the output string
 
end
 
end
 
return str;
 
end 
 
  
--[[--------------------------< I S _ G O O D _ V A N C _ N A M E >--------------------------------------------
 
  
For Vancouver Style, author/editor names are supposed to be rendered in Latin (read ASCII) characters.  When a name
 
uses characters that contain diacritical marks, those characters are to converted to the corresponding Latin character.
 
When a name is written using a non-Latin alphabet or logogram, that name is to be transliterated into Latin characters.
 
These things are not currently possible in this module so are left to the editor to do.
 
  
This test allows |first= and |last= names to contain any of the letters defined in the four Unicode Latin character sets
+
--[[-------------------------< N O R M A L I Z E _ P A G E _ L I S T >-----------------------------------------
[http://www.unicode.org/charts/PDF/U0000.pdf C0 Controls and Basic Latin] 0041–005A, 0061–007A
 
[http://www.unicode.org/charts/PDF/U0080.pdf C1 Controls and Latin-1 Supplement] 00C0–00D6, 00D8–00F6, 00F8–00FF
 
[http://www.unicode.org/charts/PDF/U0100.pdf Latin Extended-A] 0100–017F
 
[http://www.unicode.org/charts/PDF/U0180.pdf Latin Extended-B] 0180–01BF, 01C4–024F
 
  
|lastn= also allowed to contain hyphens, spaces, and apostrophes. (http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35029/)
+
not currently used
|firstn= also allowed to contain hyphens, spaces, apostrophes, and periods
 
  
At the time of this writing, I had to write the 'if nil == mw.ustring.find ...' test ouside of the code editor and paste it here
+
normalizes a comma, ampersand, and/or space separated list to be '<value>, <value>, ..., <value>'
because the code editor gets confused between character insertion point and cursor position.
+
returns list unchanged if there are no commas else strips whitespace and then reformats the list
  
 +
]]
 +
--[[
 +
local function normalize_page_list (list)
 +
if not list:find ('[,& ]') then return list end -- if list is not delimited with commas, ampersands, or spaces; done
 +
 +
list = mw.text.split (list, '[,&%s]+'); -- make a table of values
 +
list = table.concat (list, ', '); -- and now make a normalized list
 +
return list;
 +
end
 
]]
 
]]
  
local function is_good_vanc_name (last, first)
+
--[[-------------------------< F O R M A T _ P A G E S _ S H E E T S >-----------------------------------------
if nil == mw.ustring.find (last, "^[A-Za--ÖØ-öø-ƿDŽ-ɏ%-%s%']*$") or nil == mw.ustring.find (first, "^[A-Za--ÖØ-öø-ƿDŽ-ɏ%-%s%'%.]*$") then
 
add_vanc_error ();
 
return false; -- not a string of latin characters; Vancouver required Romanization
 
end;
 
return true;
 
end
 
  
--[[--------------------------< R E D U C E _ T O _ I N I T I A L S >------------------------------------------
+
adds static text to one of |page(s)= or |sheet(s)= values and returns it with all of the others set to empty strings.
 +
The return order is:
 +
page, pages, sheet, sheets
  
Attempts to convert names to initials in support of |name-list-format=vanc.
+
Singular has priority over plural when both are provided.
  
Names in |firstn= may be separated by spaces or hyphens, or for initials, a period. See http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35062/.
+
]]
  
Vancouver style requires family rank designations (Jr, II, III, etc) to be rendered as Jr, 2nd, 3rd, etc.  This form is not
+
local function format_pages_sheets (page, pages, sheet, sheets, cite_class, origin, sepc, nopp, lower)
currently supported by this code so correctly formed names like Smith JL 2nd are converted to Smith J2. See http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35085/.
+
if 'map' == cite_class then -- only cite map supports sheet(s) as in-source locators
 +
if is_set (sheet) then
 +
if 'journal' == origin then
 +
return '', '', wrap_msg ('j-sheet', sheet, lower), '';
 +
else
 +
return '', '', wrap_msg ('sheet', {sepc, sheet}, lower), '';
 +
end
 +
elseif is_set (sheets) then
 +
if 'journal' == origin then
 +
return '', '', '', wrap_msg ('j-sheets', sheets, lower);
 +
else
 +
return '', '', '', wrap_msg ('sheets', {sepc, sheets}, lower);
 +
end
 +
end
 +
end
  
This function uses ustring functions because firstname initials may be any of the unicode Latin characters accepted by is_good_vanc_name ().
+
local is_journal = 'journal' == cite_class or (in_array (cite_class, {'citation', 'map'}) and 'journal' == origin);
  
]]
+
if is_set (page) then
 
+
if is_journal then
local function reduce_to_initials(first)
+
return substitute (cfg.messages['j-page(s)'], page), '', '', '';
if mw.ustring.match(first, "^%u%u$") then return first end; -- when first contains just two upper-case letters, nothing to do
+
elseif not nopp then
local initials = {}
+
return substitute (cfg.messages['p-prefix'], {sepc, page}), '', '', '';
local i = 0; -- counter for number of initials
+
else
for word in mw.ustring.gmatch(first, "[^%s%.%-]+") do -- names separated by spaces, hyphens, or periods
+
return substitute (cfg.messages['nopp'], {sepc, page}), '', '', '';
table.insert(initials, mw.ustring.sub(word,1,1)) -- Vancouver format does not include full stops.
+
end
i = i + 1; -- bump the counter
+
elseif is_set(pages) then
if 2 <= i then break; end -- only two initials allowed in Vancouver system; if 2, quit
+
if is_journal then
 +
return substitute (cfg.messages['j-page(s)'], pages), '', '', '';
 +
elseif tonumber(pages) ~= nil and not nopp then -- if pages is only digits, assume a single page number
 +
return '', substitute (cfg.messages['p-prefix'], {sepc, pages}), '', '';
 +
elseif not nopp then
 +
return '', substitute (cfg.messages['pp-prefix'], {sepc, pages}), '', '';
 +
else
 +
return '', substitute (cfg.messages['nopp'], {sepc, pages}), '', '';
 +
end
 
end
 
end
return table.concat(initials) -- Vancouver format does not include spaces.
+
 +
return '', '', '', ''; -- return empty strings
 
end
 
end
  
--[[--------------------------< L I S T _ P E O P L E >-------------------------------------------------------
+
--[[--------------------------< C I T A T I O N 0 >------------------------------------------------------------
  
Formats a list of people (e.g. authors / editors)
+
This is the main function doing the majority of the citation formatting.
  
 
]]
 
]]
  
local function list_people(control, people, etal, list_name) -- TODO: why is list_name here?  not used in this function
+
local function citation0( config, args)
local sep;
+
--[[
local namesep;
+
Load Input Parameters
local format = control.format
+
The argument_wrapper facilitates the mapping of multiple aliases to single internal variable.
local maximum = control.maximum
+
]]
local lastauthoramp = control.lastauthoramp;
+
local A = argument_wrapper( args );
local text = {}
+
local i
 +
 
 +
-- Pick out the relevant fields from the arguments.  Different citation templates
 +
-- define different field names for the same underlying things.
 +
local author_etal;
 +
local a = {}; -- authors list from |lastn= / |firstn= pairs or |vauthors=
 +
local Authors;
 +
local NameListFormat = A['NameListFormat'];
 +
local Collaboration = A['Collaboration'];
  
if 'vanc' == format then -- Vancouver-like author/editor name styling?
+
do -- to limit scope of selected
sep = ','; -- name-list separator between authors is a comma
+
local selected = select_author_editor_source (A['Vauthors'], A['Authors'], args, 'AuthorList');
namesep = ' '; -- last/first separator is a space
+
if 1 == selected then
else
+
a, author_etal = extract_names (args, 'AuthorList'); -- fetch author list from |authorn= / |lastn= / |firstn=, |author-linkn=, and |author-maskn=
sep = ';' -- name-list separator between authors is a semicolon
+
elseif 2 == selected then
namesep = ', ' -- last/first separator is <comma><space>
+
NameListFormat = 'vanc'; -- override whatever |name-list-format= might be
 +
a, author_etal = parse_vauthors_veditors (args, args.vauthors, 'AuthorList'); -- fetch author list from |vauthors=, |author-linkn=, and |author-maskn=
 +
elseif 3 == selected then
 +
Authors = A['Authors']; -- use content of |authors=
 +
end
 +
if is_set (Collaboration) then
 +
author_etal = true; -- so that |display-authors=etal not required
 +
end
 
end
 
end
 +
 +
local Coauthors = A['Coauthors'];
 +
local Others = A['Others'];
 +
 +
local editor_etal;
 +
local e = {}; -- editors list from |editor-lastn= / |editor-firstn= pairs or |veditors=
 +
local Editors;
 +
 +
do -- to limit scope of selected
 +
local selected = select_author_editor_source (A['Veditors'], A['Editors'], args, 'EditorList');
 +
if 1 == selected then
 +
e, editor_etal = extract_names (args, 'EditorList'); -- fetch editor list from |editorn= / |editor-lastn= / |editor-firstn=, |editor-linkn=, and |editor-maskn=
 +
elseif 2 == selected then
 +
NameListFormat = 'vanc'; -- override whatever |name-list-format= might be
 +
e, editor_etal = parse_vauthors_veditors (args, args.veditors, 'EditorList'); -- fetch editor list from |veditors=, |editor-linkn=, and |editor-maskn=
 +
elseif 3 == selected then
 +
Editors = A['Editors']; -- use content of |editors=
 +
end
 +
end
 +
 +
local t = {}; -- translators list from |translator-lastn= / translator-firstn= pairs
 +
local Translators; -- assembled translators name list
 +
t = extract_names (args, 'TranslatorList'); -- fetch translator list from |translatorn= / |translator-lastn=, -firstn=, -linkn=, -maskn=
 
 
if sep:sub(-1,-1) ~= " " then sep = sep .. " " end
+
local c = {}; -- contributors list from |contributor-lastn= / contributor-firstn= pairs
if is_set (maximum) and maximum < 1 then return "", 0; end -- returned 0 is for EditorCount; not used for authors
+
local Contributors; -- assembled contributors name list
+
local Contribution = A['Contribution'];
for i,person in ipairs(people) do
+
if in_array(config.CitationClass, {"book","citation"}) and not is_set(A['Periodical']) then -- |contributor= and |contribution= only supported in book cites
if is_set(person.last) then
+
c = extract_names (args, 'ContributorList'); -- fetch contributor list from |contributorn= / |contributor-lastn=, -firstn=, -linkn=, -maskn=
local mask = person.mask
+
local one
+
if 0 < #c then
local sep_one = sep;
+
if not is_set (Contribution) then -- |contributor= requires |contribution=
if is_set (maximum) and i > maximum then
+
table.insert( z.message_tail, { set_error( 'contributor_missing_required_param', 'contribution')}); -- add missing contribution error message
etal = true;
+
c = {}; -- blank the contributors' table; it is used as a flag later
break;
+
end
elseif (mask ~= nil) then
+
if 0 == #a then -- |contributor= requires |author=
local n = tonumber(mask)
+
table.insert( z.message_tail, { set_error( 'contributor_missing_required_param', 'author')}); -- add missing author error message
if (n ~= nil) then
+
c = {}; -- blank the contributors' table; it is used as a flag later
one = string.rep("&mdash;",n)
 
else
 
one = mask;
 
sep_one = " ";
 
end
 
else
 
one = person.last
 
local first = person.first
 
if is_set(first) then  
 
if ( "vanc" == format ) then -- if vancouver format
 
one = one:gsub ('%.', ''); -- remove periods from surnames (http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35029/)
 
if not person.corporate and is_good_vanc_name (one, first) then -- and name is all Latin characters; corporate authors not tested
 
first = reduce_to_initials(first) -- attempt to convert first name(s) to initials
 
end
 
end
 
one = one .. namesep .. first
 
end
 
if is_set(person.link) and person.link ~= control.page_name then
 
one = "[[" .. person.link .. "|" .. one .. "]]" -- link author/editor if this page is not the author's/editor's page
 
end
 
 
end
 
end
table.insert( text, one )
 
table.insert( text, sep_one )
 
 
end
 
end
end
+
else -- if not a book cite
 
+
if select_one (args, cfg.aliases['ContributorList-Last'], 'redundant_parameters', 1 ) then -- are there contributor name list parameters?
local count = #text / 2; -- (number of names + number of separators) divided by 2
+
table.insert( z.message_tail, { set_error( 'contributor_ignored')}); -- add contributor ignored error message
if count > 0 then
 
if count > 1 and is_set(lastauthoramp) and not etal then
 
text[#text-2] = " & "; -- replace last separator with ampersand text
 
 
end
 
end
text[#text] = nil; -- erase the last separator
+
Contribution = nil; -- unset
 
end
 
end
+
 
local result = table.concat(text) -- construct list
+
if not is_valid_parameter_value (NameListFormat, 'name-list-format', cfg.keywords['name-list-format']) then -- only accepted value for this parameter is 'vanc'
if etal and is_set (result) then -- etal may be set by |display-authors=etal but we might not have a last-first list
+
NameListFormat = ''; -- anything else, set to empty string
result = result .. sep .. ' ' .. cfg.messages['et al']; -- we've go a last-first list and etal so add et al.
 
 
end
 
end
 
return result, count
 
end
 
  
--[[--------------------------< A N C H O R _ I D >------------------------------------------------------------
+
local Year = A['Year'];
 +
local PublicationDate = A['PublicationDate'];
 +
local OrigYear = A['OrigYear'];
 +
local Date = A['Date'];
 +
local LayDate = A['LayDate'];
 +
------------------------------------------------- Get title data
 +
local Title = A['Title'];
 +
local ScriptTitle = A['ScriptTitle'];
 +
local BookTitle = A['BookTitle'];
 +
local Conference = A['Conference'];
 +
local TransTitle = A['TransTitle'];
 +
local TitleNote = A['TitleNote'];
 +
local TitleLink = A['TitleLink'];
 +
link_title_ok (TitleLink, A:ORIGIN ('TitleLink'), Title, 'title'); -- check for wikimarkup in |title-link= or wikimarkup in |title= when |title-link= is set
  
Generates a CITEREF anchor ID if we have at least one name or a date.  Otherwise returns an empty string.
+
local Chapter = A['Chapter'];
 
+
local ScriptChapter = A['ScriptChapter'];
namelist is one of the contributor-, author-, or editor-name lists chosen in that order.  year is Year or anchor_year.
+
local ChapterLink -- = A['ChapterLink']; -- deprecated as a parameter but still used internally by cite episode
 +
local TransChapter = A['TransChapter'];
 +
local TitleType = A['TitleType'];
 +
local Degree = A['Degree'];
 +
local Docket = A['Docket'];
 +
local ArchiveFormat = A['ArchiveFormat'];
 +
local ArchiveURL = A['ArchiveURL'];
 +
local URL = A['URL']
 +
local URLorigin = A:ORIGIN('URL'); -- get name of parameter that holds URL
 +
local ChapterURL = A['ChapterURL'];
 +
local ChapterURLorigin = A:ORIGIN('ChapterURL'); -- get name of parameter that holds ChapterURL
 +
local ConferenceFormat = A['ConferenceFormat'];
 +
local ConferenceURL = A['ConferenceURL'];
 +
local ConferenceURLorigin = A:ORIGIN('ConferenceURL'); -- get name of parameter that holds ConferenceURL
 +
local Periodical = A['Periodical'];
 +
local Periodical_origin = A:ORIGIN('Periodical'); -- get the name of the periodical parameter
  
]]
+
local Series = A['Series'];
local function anchor_id (namelist, year)
+
local names={}; -- a table for the one to four names and year
+
local Volume;
for i,v in ipairs (namelist) do -- loop through the list and take up to the first four last names
+
local Issue;
names[i] = v.last
+
local Page;
if i == 4 then break end -- if four then done
+
local Pages;
 +
local At;
 +
 
 +
if in_array (config.CitationClass, cfg.templates_using_volume) and not ('conference' == config.CitationClass and not is_set (Periodical)) then
 +
Volume = A['Volume'];
 +
end
 +
if in_array (config.CitationClass, cfg.templates_using_issue) and not (in_array (config.CitationClass, {'conference', 'map'}) and not is_set (Periodical))then
 +
Issue = A['Issue'];
 
end
 
end
table.insert (names, year); -- add the year at the end
+
local Position = '';
local id = table.concat(names); -- concatenate names and year for CITEREF id
+
if not in_array (config.CitationClass, cfg.templates_not_using_page) then
if is_set (id) then -- if concatenation is not an empty string
+
Page = A['Page'];
return "CITEREF" .. id; -- add the CITEREF portion
+
Pages = hyphen_to_dash( A['Pages'] );
else
+
At = A['At'];
return ''; -- return an empty string; no reason to include CITEREF id in this citation
 
 
end
 
end
end
 
  
 +
local Edition = A['Edition'];
 +
local PublicationPlace = A['PublicationPlace']
 +
local Place = A['Place'];
 +
 +
local PublisherName = A['PublisherName'];
 +
local RegistrationRequired = A['RegistrationRequired'];
 +
if not is_valid_parameter_value (RegistrationRequired, 'registration', cfg.keywords ['yes_true_y']) then
 +
RegistrationRequired=nil;
 +
end
 +
local SubscriptionRequired = A['SubscriptionRequired'];
 +
if not is_valid_parameter_value (SubscriptionRequired, 'subscription', cfg.keywords ['yes_true_y']) then
 +
SubscriptionRequired=nil;
 +
end
  
--[[--------------------------< N A M E _ H A S _ E T A L >----------------------------------------------------
+
local Via = A['Via'];
 +
local AccessDate = A['AccessDate'];
 +
local ArchiveDate = A['ArchiveDate'];
 +
local Agency = A['Agency'];
 +
local DeadURL = A['DeadURL']
 +
if not is_valid_parameter_value (DeadURL, 'dead-url', cfg.keywords ['deadurl']) then -- set in config.defaults to 'yes'
 +
DeadURL = ''; -- anything else, set to empty string
 +
end
  
Evaluates the content of author and editor name parameters for variations on the theme of et al. If found,
+
local Language = A['Language'];
the et al. is removed, a flag is set to true and the function returns the modified name and the flag.
+
local Format = A['Format'];
 
+
local ChapterFormat = A['ChapterFormat'];
This function never sets the flag to false but returns it's previous state because it may have been set by
+
local DoiBroken = A['DoiBroken'];
previous passes through this function or by the parameters |display-authors=etal or |display-editors=etal
+
local ID = A['ID'];
 +
local ASINTLD = A['ASINTLD'];
 +
local IgnoreISBN = A['IgnoreISBN'];
 +
if not is_valid_parameter_value (IgnoreISBN, 'ignore-isbn-error', cfg.keywords ['yes_true_y']) then
 +
IgnoreISBN = nil; -- anything else, set to empty string
 +
end
 +
local Embargo = A['Embargo'];
 +
local Class = A['Class']; -- arxiv class identifier
 +
 
 +
local ID_list = extract_ids( args );
  
]]
+
local Quote = A['Quote'];
  
local function name_has_etal (name, etal, nocat)
+
local LayFormat = A['LayFormat'];
 +
local LayURL = A['LayURL'];
 +
local LaySource = A['LaySource'];
 +
local Transcript = A['Transcript'];
 +
local TranscriptFormat = A['TranscriptFormat'];
 +
local TranscriptURL = A['TranscriptURL']
 +
local TranscriptURLorigin = A:ORIGIN('TranscriptURL'); -- get name of parameter that holds TranscriptURL
  
if is_set (name) then -- name can be nil in which case just return
+
local LastAuthorAmp = A['LastAuthorAmp'];
local etal_pattern = "[;,]? *[\"']*%f[%a][Ee][Tt] *[Aa][Ll][%.\"']*$" -- variations on the 'et al' theme
+
if not is_valid_parameter_value (LastAuthorAmp, 'last-author-amp', cfg.keywords ['yes_true_y']) then
local others_pattern = "[;,]? *%f[%a]and [Oo]thers"; -- and alternate to et al.
+
LastAuthorAmp = nil; -- set to empty string
+
end
if name:match (etal_pattern) then -- variants on et al.
+
local no_tracking_cats = A['NoTracking'];
name = name:gsub (etal_pattern, ''); -- if found, remove
+
if not is_valid_parameter_value (no_tracking_cats, 'no-tracking', cfg.keywords ['yes_true_y']) then
etal = true; -- set flag (may have been set previously here or by |display-authors=etal)
+
no_tracking_cats = nil; -- set to empty string
if not nocat then -- no categorization for |vauthors=
 
add_maint_cat ('etal'); -- and add a category if not already added
 
end
 
elseif name:match (others_pattern) then -- if not 'et al.', then 'and others'?
 
name = name:gsub (others_pattern, ''); -- if found, remove
 
etal = true; -- set flag (may have been set previously here or by |display-authors=etal)
 
if not nocat then -- no categorization for |vauthors=
 
add_maint_cat ('etal'); -- and add a category if not already added
 
end
 
 
end
 
end
end
 
return name, etal; --
 
end
 
  
--[[--------------------------< E X T R A C T _ N A M E S >----------------------------------------------------
+
--these are used by cite interview
Gets name list from the input arguments
+
local Callsign = A['Callsign'];
 +
local City = A['City'];
 +
local Program = A['Program'];
  
Searches through args in sequential order to find |lastn= and |firstn= parameters (or their aliases), and their matching link and mask parameters.
+
--local variables that are not cs1 parameters
Stops searching when both |lastn= and |firstn= are not found in args after two sequential attempts: found |last1=, |last2=, and |last3= but doesn't
+
local use_lowercase; -- controls capitalization of certain static text
find |last4= and |last5= then the search is done.
+
local this_page = mw.title.getCurrentTitle(); -- also used for COinS and for language
 +
local anchor_year; -- used in the CITEREF identifier
 +
local COinS_date = {}; -- holds date info extracted from |date= for the COinS metadata by Module:Date verification
  
This function emits an error message when there is a |firstn= without a matching |lastn=.  When there are 'holes' in the list of last names, |last1= and |last3=
+
local DF = A['DF']; -- date format set in cs1|2 template
are present but |last2= is missing, an error message is emitted. |lastn= is not required to have a matching |firstn=.
+
if not is_valid_parameter_value (DF, 'df', cfg.keywords['date-format']) then -- validate reformatting keyword
 +
DF = ''; -- not valid, set to empty string
 +
end
  
When an author or editor parameter contains some form of 'et al.', the 'et al.' is stripped from the parameter and a flag (etal) returned
+
-- set default parameter values defined by |mode= parameter. If |mode= is empty or omitted, use CitationClass to set these values
that will cause list_people() to add the static 'et al.' text from Module:Citation/CS1/Configuration. This keeps 'et al.' out of the
+
local Mode = A['Mode'];
template's metadata.  When this occurs, the page is added to a maintenance category.
+
if not is_valid_parameter_value (Mode, 'mode', cfg.keywords['mode']) then
 
+
Mode = '';
]]
+
end
 +
local sepc; -- separator between citation elements for CS1 a period, for CS2, a comma
 +
local PostScript;
 +
local Ref;
 +
sepc, PostScript, Ref = set_style (Mode:lower(), A['PostScript'], A['Ref'], config.CitationClass);
 +
use_lowercase = ( sepc == ',' ); -- used to control capitalization for certain static text
  
local function extract_names(args, list_name)
+
--check this page to see if it is in one of the namespaces that cs1 is not supposed to add to the error categories
local names = {}; -- table of names
+
if not is_set (no_tracking_cats) then -- ignore if we are already not going to categorize this page
local last; -- individual name components
+
if in_array (this_page.nsText, cfg.uncategorized_namespaces) then
local first;
+
no_tracking_cats = "true"; -- set no_tracking_cats
local link;
+
end
local mask;
+
for _,v in ipairs (cfg.uncategorized_subpages) do -- cycle through page name patterns
local i = 1; -- loop counter/indexer
+
if this_page.text:match (v) then -- test page name against each pattern
local n = 1; -- output table indexer
+
no_tracking_cats = "true"; -- set no_tracking_cats
local count = 0; -- used to count the number of times we haven't found a |last= (or alias for authors, |editor-last or alias for editors)
+
break; -- bail out if one is found
local etal=false; -- return value set to true when we find some form of et al. in an author parameter
+
end
 +
end
 +
end
  
local err_msg_list_name = list_name:match ("(%w+)List") .. 's list'; -- modify AuthorList or EditorList for use in error messages if necessary
+
-- check for extra |page=, |pages= or |at= parameters. (also sheet and sheets while we're at it)
while true do
+
select_one( args, {'page', 'p', 'pp', 'pages', 'at', 'sheet', 'sheets'}, 'redundant_parameters' ); -- this is a dummy call simply to get the error message and category
last = select_one( args, cfg.aliases[list_name .. '-Last'], 'redundant_parameters', i ); -- search through args for name components beginning at 1
 
first = select_one( args, cfg.aliases[list_name .. '-First'], 'redundant_parameters', i );
 
link = select_one( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i );
 
mask = select_one( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i );
 
  
last, etal = name_has_etal (last, etal, false); -- find and remove variations on et al.
+
local NoPP = A['NoPP']
first, etal = name_has_etal (first, etal, false); -- find and remove variations on et al.
+
if is_set (NoPP) and is_valid_parameter_value (NoPP, 'nopp', cfg.keywords ['yes_true_y']) then
 +
NoPP = true;
 +
else
 +
NoPP = nil; -- unset, used as a flag later
 +
end
  
if first and not last then -- if there is a firstn without a matching lastn
+
if is_set(Page) then
table.insert( z.message_tail, { set_error( 'first_missing_last', {err_msg_list_name, i}, true ) } ); -- add this error message
+
if is_set(Pages) or is_set(At) then
elseif not first and not last then -- if both firstn and lastn aren't found, are we done?
+
Pages = ''; -- unset the others
count = count + 1; -- number of times we haven't found last and first
+
At = '';
if 2 <= count then -- two missing names and we give up
 
break; -- normal exit or there is a two-name hole in the list; can't tell which
 
end
 
else -- we have last with or without a first
 
if is_set (link) and false == link_param_ok (link) then -- do this test here in case link is missing last
 
table.insert( z.message_tail, { set_error( 'bad_paramlink', list_name:match ("(%w+)List"):lower() .. '-link' .. i )}); -- url or wikilink in author link;
 
end
 
names[n] = {last = last, first = first, link = link, mask = mask, corporate=false}; -- add this name to our names list (corporate for |vauthors= only)
 
n = n + 1; -- point to next location in the names table
 
if 1 == count then -- if the previous name was missing
 
table.insert( z.message_tail, { set_error( 'missing_name', {err_msg_list_name, i-1}, true ) } ); -- add this error message
 
end
 
count = 0; -- reset the counter, we're looking for two consecutive missing names
 
 
end
 
end
i = i + 1; -- point to next args location
+
extra_text_in_page_check (Page); -- add this page to maint cat if |page= value begins with what looks like p. or pp.
end
+
elseif is_set(Pages) then
+
if is_set(At) then
return names, etal; -- all done, return our list of names
+
At = ''; -- unset
end
+
end
 
+
extra_text_in_page_check (Pages); -- add this page to maint cat if |pages= value begins with what looks like p. or pp.
--[[--------------------------< B U I L D _ I D _ L I S T >--------------------------------------------------------
+
end
 
 
Populates ID table from arguments using configuration settings. Loops through cfg.id_handlers and searches args for
 
any of the parameters listed in each cfg.id_handlers['...'].parameters.  If found, adds the parameter and value to
 
the identifier list.  Emits redundant error message is more than one alias exists in args
 
  
]]
+
-- both |publication-place= and |place= (|location=) allowed if different
 
+
if not is_set(PublicationPlace) and is_set(Place) then
local function extract_ids( args )
+
PublicationPlace = Place; -- promote |place= (|location=) to |publication-place
local id_list = {}; -- list of identifiers found in args
 
for k, v in pairs( cfg.id_handlers ) do -- k is uc identifier name as index to cfg.id_handlers; e.g. cfg.id_handlers['ISBN'], v is a table
 
v = select_one( args, v.parameters, 'redundant_parameters' ); -- v.parameters is a table of aliases for k; here we pick one from args if present
 
if is_set(v) then id_list[k] = v; end -- if found in args, add identifier to our list
 
 
end
 
end
return id_list;
+
end
+
if PublicationPlace == Place then Place = ''; end -- don't need both if they are the same
 +
 +
--[[
 +
Parameter remapping for cite encyclopedia:
 +
When the citation has these parameters:
 +
|encyclopedia and |title then map |title to |article and |encyclopedia to |title
 +
|encyclopedia and |article then map |encyclopedia to |title
 +
|encyclopedia then map |encyclopedia to |title
  
--[[--------------------------< B U I L D _ I D _ L I S T >--------------------------------------------------------
+
|trans_title maps to |trans_chapter when |title is re-mapped
 +
|url maps to |chapterurl when |title is remapped
  
Takes a table of IDs created by extract_ids() and turns it into a table of formatted ID outputs.
+
All other combinations of |encyclopedia, |title, and |article are not modified
 
 
inputs:
 
id_list – table of identifiers built by extract_ids()
 
options – table of various template parameter values used to modify some manually handled identifiers
 
  
 
]]
 
]]
  
local function build_id_list( id_list, options )
+
local Encyclopedia = A['Encyclopedia'];
local new_list, handler = {};
 
  
function fallback(k) return { __index = function(t,i) return cfg.id_handlers[k][i] end } end;
+
if ( config.CitationClass == "encyclopaedia" ) or ( config.CitationClass == "citation" and is_set (Encyclopedia)) then -- test code for citation
+
if is_set(Periodical) then -- Periodical is set when |encyclopedia is set
for k, v in pairs( id_list ) do -- k is uc identifier name as index to cfg.id_handlers; e.g. cfg.id_handlers['ISBN'], v is a table
+
if is_set(Title) or is_set (ScriptTitle) then
-- fallback to read-only cfg
+
if not is_set(Chapter) then
handler = setmetatable( { ['id'] = v }, fallback(k) );
+
Chapter = Title; -- |encyclopedia and |title are set so map |title to |article and |encyclopedia to |title
+
ScriptChapter = ScriptTitle;
if handler.mode == 'external' then
+
TransChapter = TransTitle;
table.insert( new_list, {handler.label, external_link_id( handler ) } );
+
ChapterURL = URL;
elseif handler.mode == 'internal' then
+
if not is_set (ChapterURL) and is_set (TitleLink) then
table.insert( new_list, {handler.label, internal_link_id( handler ) } );
+
Chapter= '[[' .. TitleLink .. '|' .. Chapter .. ']]';
elseif handler.mode ~= 'manual' then
+
end
error( cfg.messages['unknown_ID_mode'] );
+
Title = Periodical;
elseif k == 'DOI' then
+
ChapterFormat = Format;
table.insert( new_list, {handler.label, doi( v, options.DoiBroken ) } );
+
Periodical = ''; -- redundant so unset
elseif k == 'ARXIV' then
+
TransTitle = '';
table.insert( new_list, {handler.label, arxiv( v, options.Class ) } );
+
URL = '';
elseif k == 'ASIN' then
+
Format = '';
table.insert( new_list, {handler.label, amazon( v, options.ASINTLD ) } );  
+
TitleLink = '';
elseif k == 'LCCN' then
+
ScriptTitle = '';
table.insert( new_list, {handler.label, lccn( v ) } );
+
end
elseif k == 'OL' or k == 'OLA' then
+
else -- |title not set
table.insert( new_list, {handler.label, openlibrary( v ) } );
+
Title = Periodical; -- |encyclopedia set and |article set or not set so map |encyclopedia to |title
elseif k == 'PMC' then
+
Periodical = ''; -- redundant so unset
table.insert( new_list, {handler.label, pmc( v, options.Embargo ) } );
+
end
elseif k == 'PMID' then
+
end
table.insert( new_list, {handler.label, pmid( v ) } );
 
elseif k == 'ISMN' then
 
table.insert( new_list, {handler.label, ismn( v ) } );
 
elseif k == 'ISSN' then
 
table.insert( new_list, {handler.label, issn( v ) } );
 
elseif k == 'ISBN' then
 
local ISBN = internal_link_id( handler );
 
if not check_isbn( v ) and not is_set(options.IgnoreISBN) then
 
ISBN = ISBN .. set_error( 'bad_isbn', {}, false, " ", "" );
 
end
 
table.insert( new_list, {handler.label, ISBN } );
 
elseif k == 'USENETID' then
 
table.insert( new_list, {handler.label, message_id( v ) } );
 
else
 
error( cfg.messages['unknown_manual_ID'] );
 
end
 
end
 
 
function comp( a, b ) -- used in following table.sort()
 
return a[1] < b[1];
 
 
end
 
end
+
 
table.sort( new_list, comp );
+
-- Special case for cite techreport.
for k, v in ipairs( new_list ) do
+
if (config.CitationClass == "techreport") then -- special case for cite techreport
new_list[k] = v[2];
+
if is_set(A['Number']) then -- cite techreport uses 'number', which other citations alias to 'issue'
 +
if not is_set(ID) then -- can we use ID for the "number"?
 +
ID = A['Number']; -- yes, use it
 +
else -- ID has a value so emit error message
 +
table.insert( z.message_tail, { set_error('redundant_parameters', {wrap_style ('parameter', 'id') .. ' and ' .. wrap_style ('parameter', 'number')}, true )});
 +
end
 +
end
 
end
 
end
 
return new_list;
 
end
 
 
 
  
--[[--------------------------< C O I N S _ C L E A N U P >----------------------------------------------------
+
-- special case for cite interview
 
+
if (config.CitationClass == "interview") then
Cleanup parameter values for the metadata by removing or replacing invisible characters and certain html entities.
+
if is_set(Program) then
 
+
ID = ' ' .. Program;
2015-12-10: there is a bug in mw.text.unstripNoWiki ().  It replaced math stripmarkers with the appropriate content
 
when it shouldn't.  See https://phabricator.wikimedia.org/T121085 and Wikipedia_talk:Lua#stripmarkers_and_mw.text.unstripNoWiki.28.29
 
 
 
TODO: move the replacement patterns and replacement values into a table in /Configuration similar to the invisible
 
characters table?
 
]]
 
 
 
local function coins_cleanup (value)
 
value = mw.text.unstripNoWiki (value); -- replace nowiki stripmarkers with their content
 
value = value:gsub ('<span class="nowrap" style="padding%-left:0%.1em;">&#39;s</span>', "'s"); -- replace {{'s}} template with simple apostrophe-s
 
value = value:gsub ('&zwj;\226\128\138\039\226\128\139', "'"); -- replace {{'}} with simple apostrophe
 
value = value:gsub ('\226\128\138\039\226\128\139', "'"); -- replace {{'}} with simple apostrophe (as of 2015-12-11)
 
value = value:gsub ('&nbsp;', ' '); -- replace &nbsp; entity with plain space
 
value = value:gsub ('\226\128\138', ' '); -- replace hair space with plain space
 
value = value:gsub ('&zwj;', ''); -- remove &zwj; entities
 
value = value:gsub ('[\226\128\141\226\128\139]', '') -- remove zero-width joiner, zero-width space
 
value = value:gsub ('[\194\173\009\010\013]', ' '); -- replace soft hyphen, horizontal tab, line feed, carriage return with plain space
 
return value;
 
end
 
 
 
 
 
--[[--------------------------< C O I N S >--------------------------------------------------------------------
 
 
 
COinS metadata (see <http://ocoins.info/>) allows automated tools to parse the citation information.
 
 
 
]]
 
 
 
local function COinS(data, class)
 
if 'table' ~= type(data) or nil == next(data) then
 
return '';
 
end
 
 
 
for k, v in pairs (data) do -- spin through all of the metadata parameter values
 
if 'ID_list' ~= k and 'Authors' ~= k then -- except the ID_list and Author tables (author nowiki stripmarker done when Author table processed)
 
data[k] = coins_cleanup (v);
 
 
end
 
end
end
+
if is_set(Callsign) then
 
+
if is_set(ID) then
local ctx_ver = "Z39.88-2004";
+
ID = ID .. sepc .. ' ' .. Callsign;
+
else
-- treat table strictly as an array with only set values.
+
ID = ' ' .. Callsign;
local OCinSoutput = setmetatable( {}, {
 
__newindex = function(self, key, value)
 
if is_set(value) then
 
rawset( self, #self+1, table.concat{ key, '=', mw.uri.encode( remove_wiki_link( value ) ) } );
 
 
end
 
end
 
end
 
end
});
+
if is_set(City) then
+
if is_set(ID) then
if in_array (class, {'arxiv', 'journal', 'news'}) or (in_array (class, {'conference', 'interview', 'map', 'press release', 'web'}) and is_set(data.Periodical)) or
+
ID = ID .. sepc .. ' ' .. City;
('citation' == class and is_set(data.Periodical) and not is_set (data.Encyclopedia)) then
 
OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:journal"; -- journal metadata identifier
 
if 'arxiv' == class then -- set genre according to the type of citation template we are rendering
 
OCinSoutput["rft.genre"] = "preprint"; -- cite arxiv
 
elseif 'conference' == class then
 
OCinSoutput["rft.genre"] = "conference"; -- cite conference (when Periodical set)
 
elseif 'web' == class then
 
OCinSoutput["rft.genre"] = "unknown"; -- cite web (when Periodical set)
 
 
else
 
else
OCinSoutput["rft.genre"] = "article"; -- journal and other 'periodical' articles
+
ID = ' ' .. City;
 
end
 
end
OCinSoutput["rft.jtitle"] = data.Periodical; -- journal only
+
end
if is_set (data.Map) then
+
 
OCinSoutput["rft.atitle"] = data.Map; -- for a map in a periodical
+
if is_set(Others) then
 +
if is_set(TitleType) then
 +
Others = ' ' .. TitleType .. ' with ' .. Others;
 +
TitleType = '';
 
else
 
else
OCinSoutput["rft.atitle"] = data.Title; -- all other 'periodical' article titles
+
Others = ' ' .. 'Interview with ' .. Others;
 
end
 
end
-- these used onlu for periodicals
+
else
OCinSoutput["rft.ssn"] = data.Season; -- keywords: winter, spring, summer, fall
+
Others = '(Interview)';
OCinSoutput["rft.chron"] = data.Chron; -- free-form date components
 
OCinSoutput["rft.volume"] = data.Volume; -- does not apply to books
 
OCinSoutput["rft.issue"] = data.Issue;
 
OCinSoutput["rft.pages"] = data.Pages; -- also used in book metadata
 
 
 
elseif 'thesis' ~= class then -- all others except cite thesis are treated as 'book' metadata; genre distinguishes
 
OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book"; -- book metadata identifier
 
if 'report' == class or 'techreport' == class then -- cite report and cite techreport
 
OCinSoutput["rft.genre"] = "report";
 
elseif 'conference' == class then -- cite conference when Periodical not set
 
OCinSoutput["rft.genre"] = "conference";
 
elseif in_array (class, {'book', 'citation', 'encyclopaedia', 'interview', 'map'}) then
 
if is_set (data.Chapter) then
 
OCinSoutput["rft.genre"] = "bookitem";
 
OCinSoutput["rft.atitle"] = data.Chapter; -- book chapter, encyclopedia article, interview in a book, or map title
 
else
 
if 'map' == class or 'interview' == class then
 
OCinSoutput["rft.genre"] = 'unknown'; -- standalone map or interview
 
else
 
OCinSoutput["rft.genre"] = 'book'; -- book and encyclopedia
 
end
 
end
 
else --{'audio-visual', 'AV-media-notes', 'DVD-notes', 'episode', 'interview', 'mailinglist', 'map', 'newsgroup', 'podcast', 'press release', 'serial', 'sign', 'speech', 'web'}
 
OCinSoutput["rft.genre"] = "unknown";
 
 
end
 
end
OCinSoutput["rft.btitle"] = data.Title; -- book only
 
OCinSoutput["rft.place"] = data.PublicationPlace; -- book only
 
OCinSoutput["rft.series"] = data.Series; -- book only
 
OCinSoutput["rft.pages"] = data.Pages; -- book, journal
 
OCinSoutput["rft.edition"] = data.Edition; -- book only
 
OCinSoutput["rft.pub"] = data.PublisherName; -- book and dissertation
 
 
else -- cite thesis
 
OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:dissertation"; -- dissertation metadata identifier
 
OCinSoutput["rft.title"] = data.Title; -- dissertation (also patent but that is not yet supported)
 
OCinSoutput["rft.degree"] = data.Degree; -- dissertation only
 
OCinSoutput['rft.inst'] = data.PublisherName; -- book and dissertation
 
 
end
 
end
-- and now common parameters (as much as possible)
+
 
OCinSoutput["rft.date"] = data.Date; -- book, journal, dissertation
+
-- special case for cite mailing list
+
if (config.CitationClass == "mailinglist") then
for k, v in pairs( data.ID_list ) do -- what to do about these? For now assume that they are common to all?
+
Periodical = A ['MailingList'];
if k == 'ISBN' then v = clean_isbn( v ) end
+
elseif 'mailinglist' == A:ORIGIN('Periodical') then
local id = cfg.id_handlers[k].COinS;
+
Periodical = ''; -- unset because mailing list is only used for cite mailing list
if string.sub( id or "", 1, 4 ) == 'info' then -- for ids that are in the info:registry
 
OCinSoutput["rft_id"] = table.concat{ id, "/", v };
 
elseif string.sub (id or "", 1, 3 ) == 'rft' then -- for isbn, issn, eissn, etc that have defined COinS keywords
 
OCinSoutput[ id ] = v;
 
elseif id then -- when cfg.id_handlers[k].COinS is not nil
 
OCinSoutput["rft_id"] = table.concat{ cfg.id_handlers[k].prefix, v }; -- others; provide a url
 
end
 
 
end
 
end
  
--[[
+
-- Account for the oddity that is {{cite conference}}, before generation of COinS data.
for k, v in pairs( data.ID_list ) do -- what to do about these? For now assume that they are common to all?
+
if 'conference' == config.CitationClass then
local id, value = cfg.id_handlers[k].COinS;
+
if is_set(BookTitle) then
if k == 'ISBN' then value = clean_isbn( v ); else value = v; end
+
Chapter = Title;
if string.sub( id or "", 1, 4 ) == 'info' then
+
-- ChapterLink = TitleLink; -- |chapterlink= is deprecated
OCinSoutput["rft_id"] = table.concat{ id, "/", v };
+
ChapterURL = URL;
else
+
ChapterURLorigin = URLorigin;
OCinSoutput[ id ] = value;
+
URLorigin = '';
 +
ChapterFormat = Format;
 +
TransChapter = TransTitle;
 +
Title = BookTitle;
 +
Format = '';
 +
-- TitleLink = '';
 +
TransTitle = '';
 +
URL = '';
 
end
 
end
 +
elseif 'speech' ~= config.CitationClass then
 +
Conference = ''; -- not cite conference or cite speech so make sure this is empty string
 
end
 
end
]]
+
 
local last, first;
+
-- cite map oddities
for k, v in ipairs( data.Authors ) do
+
local Cartography = "";
last, first = coins_cleanup (v.last), coins_cleanup (v.first or ''); -- replace any nowiki strip markers, non-printing or invisible characers
+
local Scale = "";
if k == 1 then -- for the first author name only
+
local Sheet = A['Sheet'] or '';
if is_set(last)  and is_set(first) then -- set these COinS values if |first= and |last= specify the first author name
+
local Sheets = A['Sheets'] or '';
OCinSoutput["rft.aulast"] = last; -- book, journal, dissertation
+
if config.CitationClass == "map" then
OCinSoutput["rft.aufirst"] = first; -- book, journal, dissertation
+
Chapter = A['Map'];
elseif is_set(last) then
+
ChapterURL = A['MapURL'];
OCinSoutput["rft.au"] = last; -- book, journal, dissertation -- otherwise use this form for the first name
+
TransChapter = A['TransMap'];
end
+
ChapterURLorigin = A:ORIGIN('MapURL');
else -- for all other authors
+
ChapterFormat = A['MapFormat'];
if is_set(last) and is_set(first) then
+
OCinSoutput["rft.au"] = table.concat{ last, ", ", first }; -- book, journal, dissertation
+
Cartography = A['Cartography'];
elseif is_set(last) then
+
if is_set( Cartography ) then
OCinSoutput["rft.au"] = last; -- book, journal, dissertation
+
Cartography = sepc .. " " .. wrap_msg ('cartography', Cartography, use_lowercase);
end
+
end
 +
Scale = A['Scale'];
 +
if is_set( Scale ) then
 +
Scale = sepc .. " " .. Scale;
 
end
 
end
 
end
 
end
  
OCinSoutput.rft_id = data.URL;
+
-- Account for the oddities that are {{cite episode}} and {{cite serial}}, before generation of COinS data.
OCinSoutput.rfr_id = table.concat{ "info:sid/", mw.site.server:match( "[^/]*$" ), ":", data.RawPage };
+
if 'episode' == config.CitationClass or 'serial' == config.CitationClass then
OCinSoutput = setmetatable( OCinSoutput, nil );
+
local AirDate = A['AirDate'];
+
local SeriesLink = A['SeriesLink'];
-- sort with version string always first, and combine.
 
table.sort( OCinSoutput );
 
table.insert( OCinSoutput, 1, "ctx_ver=" .. ctx_ver ); -- such as "Z39.88-2004"
 
return table.concat(OCinSoutput, "&");
 
end
 
  
 +
link_title_ok (SeriesLink, A:ORIGIN ('SeriesLink'), Series, 'series'); -- check for wikimarkup in |series-link= or wikimarkup in |series= when |series-link= is set
  
--[[--------------------------< G E T _ I S O 6 3 9 _ C O D E >------------------------------------------------
+
local Network = A['Network'];
 +
local Station = A['Station'];
 +
local s, n = {}, {};
 +
-- do common parameters first
 +
if is_set(Network) then table.insert(n, Network); end
 +
if is_set(Station) then table.insert(n, Station); end
 +
ID = table.concat(n, sepc .. ' ');
 +
 +
if not is_set (Date) and is_set (AirDate) then -- promote airdate to date
 +
Date = AirDate;
 +
end
  
Validates language names provided in |language= parameter if not an ISO639-1 code.  Handles the special case that is Norwegian where
+
if 'episode' == config.CitationClass then -- handle the oddities that are strictly {{cite episode}}
ISO639-1 code 'no' is mapped to language name 'Norwegian Bokmål' by Extention:CLDR.
+
local Season = A['Season'];
 +
local SeriesNumber = A['SeriesNumber'];
  
Returns the language name and associated ISO639-1 code. Because case of the source may be incorrect or different from the case that Wikimedia
+
if is_set (Season) and is_set (SeriesNumber) then -- these are mutually exclusive so if both are set
uses, the name comparisons are done in lower case and when a match is found, the Wikimedia version (assumed to be correct) is returned along
+
table.insert( z.message_tail, { set_error( 'redundant_parameters', {wrap_style ('parameter', 'season') .. ' and ' .. wrap_style ('parameter', 'seriesno')}, true ) } ); -- add error message
with the code. When there is no match, we return the original language name string.
+
SeriesNumber = ''; -- unset; prefer |season= over |seriesno=
 
+
end
mw.language.fetchLanguageNames() will return a list of languages that aren't part of ISO639-1. Names that aren't ISO639-1 but that are included
+
-- assemble a table of parts concatenated later into Series
in the list will be found if that name is provided in the |language= parameter.  For example, if |language=Samaritan Aramaic, that name will be
+
if is_set(Season) then table.insert(s, wrap_msg ('season', Season, use_lowercase)); end
found with the associated code 'sam', not an ISO639-1 code.  When names are found and the associated code is not two characters, this function
+
if is_set(SeriesNumber) then table.insert(s, wrap_msg ('series', SeriesNumber, use_lowercase)); end
returns only the Wikimedia language name.
+
if is_set(Issue) then table.insert(s, wrap_msg ('episode', Issue, use_lowercase)); end
 
+
Issue = ''; -- unset because this is not a unique parameter
Adapted from code taken from Module:Check ISO 639-1.
 
 
 
]]
 
 
 
local function get_iso639_code (lang)
 
if 'norwegian' == lang:lower() then -- special case related to Wikimedia remap of code 'no' at Extension:CLDR
 
return 'Norwegian', 'no'; -- Make sure rendered version is properly capitalized
 
end
 
 
 
local languages = mw.language.fetchLanguageNames('en', 'all') -- get a list of language names known to Wikimedia
+
Chapter = Title; -- promote title parameters to chapter
-- ('all' is required for North Ndebele, South Ndebele, and Ojibwa)
+
ScriptChapter = ScriptTitle;
local langlc = mw.ustring.lower(lang); -- lower case version for comparisons
+
ChapterLink = TitleLink; -- alias episodelink
+
TransChapter = TransTitle;
for code, name in pairs(languages) do -- scan the list to see if we can find our language
+
ChapterURL = URL;
if langlc == mw.ustring.lower(name) then
+
ChapterURLorigin = A:ORIGIN('URL');
if 2 ~= code:len() then -- ISO639-1 codes only
+
return name; -- so return the name but not the code
+
Title = Series; -- promote series to title
 +
TitleLink = SeriesLink;
 +
Series = table.concat(s, sepc .. ' '); -- this is concatenation of season, seriesno, episode number
 +
 
 +
if is_set (ChapterLink) and not is_set (ChapterURL) then -- link but not URL
 +
Chapter = '[[' .. ChapterLink .. '|' .. Chapter .. ']]'; -- ok to wikilink
 +
elseif is_set (ChapterLink) and is_set (ChapterURL) then -- if both are set, URL links episode;
 +
Series = '[[' .. ChapterLink .. '|' .. Series .. ']]'; -- series links with ChapterLink (episodelink -> TitleLink -> ChapterLink) ugly
 +
end
 +
URL = ''; -- unset
 +
TransTitle = '';
 +
ScriptTitle = '';
 +
 +
else -- now oddities that are cite serial
 +
Issue = ''; -- unset because this parameter no longer supported by the citation/core version of cite serial
 +
Chapter = A['Episode']; -- TODO: make |episode= available to cite episode someday?
 +
if is_set (Series) and is_set (SeriesLink) then
 +
Series = '[[' .. SeriesLink .. '|' .. Series .. ']]';
 
end
 
end
return name, code; -- found it, return name to ensure proper capitalization and the ISO639-1 code
+
Series = wrap_style ('italic-title', Series); -- series is italicized
end
+
end
 
end
 
end
return lang; -- not valid language; return language in original case and nil for ISO639-1 code
+
-- end of {{cite episode}} stuff
end
 
  
--[[--------------------------< L A N G U A G E _ P A R A M E T E R >------------------------------------------
+
-- Account for the oddities that are {{cite arxiv}}, before generation of COinS data.
 +
if 'arxiv' == config.CitationClass then
 +
if not is_set (ID_list['ARXIV']) then -- |arxiv= or |eprint= required for cite arxiv
 +
table.insert( z.message_tail, { set_error( 'arxiv_missing', {}, true ) } ); -- add error message
 +
elseif is_set (Series) then -- series is an alias of version
 +
ID_list['ARXIV'] = ID_list['ARXIV'] .. Series; -- concatenate version onto the end of the arxiv identifier
 +
Series = ''; -- unset
 +
deprecated_parameter ('version'); -- deprecated parameter but only for cite arxiv
 +
end
 +
 +
if first_set ({AccessDate, At, Chapter, Format, Page, Pages, Periodical, PublisherName, URL, -- a crude list of parameters that are not supported by cite arxiv
 +
ID_list['ASIN'], ID_list['BIBCODE'], ID_list['DOI'], ID_list['ISBN'], ID_list['ISSN'],
 +
ID_list['JFM'], ID_list['JSTOR'], ID_list['LCCN'], ID_list['MR'], ID_list['OCLC'], ID_list['OL'],
 +
ID_list['OSTI'], ID_list['PMC'], ID_list['PMID'], ID_list['RFC'], ID_list['SSRN'], ID_list['USENETID'], ID_list['ZBL']},27) then
 +
table.insert( z.message_tail, { set_error( 'arxiv_params_not_supported', {}, true ) } ); -- add error message
  
Get language name from ISO639-1 code value provided.  If a code is valid use the returned name; if not, then use the value that was provided with the language parameter.
+
AccessDate= ''; -- set these to empty string; not supported in cite arXiv
 +
PublisherName = ''; -- (if the article has been published, use cite journal, or other)
 +
Chapter = '';
 +
URL = '';
 +
Format = '';
 +
Page = ''; Pages = ''; At = '';
 +
end
 +
Periodical = 'arXiv'; -- set to arXiv for COinS; after that, must be set to empty string
 +
end
  
There is an exception.  There are three ISO639-1 codes for Norewegian language variants.  There are two official variants: Norwegian Bokmål (code 'nb') and
+
-- handle type parameter for those CS1 citations that have default values
Norwegian Nynorsk (code 'nn'). The third, code 'no', is defined by ISO639-1 as 'Norwegian' though in Norway this is pretty much meaningless. However, it appears
+
if in_array(config.CitationClass, {"AV-media-notes", "DVD-notes", "mailinglist", "map", "podcast", "pressrelease", "report", "techreport", "thesis"}) then
that on enwiki, editors are for the most part unaware of the nb and nn variants (compare page counts for these variants at Category:Articles with non-English-language external links.
+
TitleType = set_titletype (config.CitationClass, TitleType);
 +
if is_set(Degree) and "Thesis" == TitleType then -- special case for cite thesis
 +
TitleType = Degree .. " thesis";
 +
end
 +
end
  
Because Norwegian Bokmål is the most common language variant, Media wiki has been modified to return Norwegian Bokmål for ISO639-1 code 'no'. Here we undo that and
+
if is_set(TitleType) then -- if type parameter is specified
return 'Norwegian' when editors use |language=no. We presume that editors don't know about the variants or can't descriminate between them.
+
TitleType = substitute( cfg.messages['type'], TitleType); -- display it in parentheses
 +
end
  
See Help talk:Citation Style_1#An ISO 639-1 language name test
+
-- legacy: promote concatenation of |month=, and |year= to Date if Date not set; or, promote PublicationDate to Date if neither Date nor Year are set.
 +
if not is_set (Date) then
 +
Date = Year; -- promote Year to Date
 +
Year = nil; -- make nil so Year as empty string isn't used for CITEREF
 +
if not is_set (Date) and is_set(PublicationDate) then -- use PublicationDate when |date= and |year= are not set
 +
Date = PublicationDate; -- promote PublicationDate to Date
 +
PublicationDate = ''; -- unset, no longer needed
 +
end
 +
end
  
When |language= contains a valid ISO639-1 code, the page is assigned to the category for that code: Category:Norwegian-language sources (no) if
+
if PublicationDate == Date then PublicationDate = ''; end -- if PublicationDate is same as Date, don't display in rendered citation
the page is a mainspace page and the ISO639-1 code is not 'en'.  Similarly, if the  parameter is |language=Norwegian, it will be categorized in the same way.
 
  
This function supports multiple languages in the form |language=nb, French, th where the language names or codes are separated from each other by commas.
+
--[[
 +
Go test all of the date-holding parameters for valid MOS:DATE format and make sure that dates are real dates. This must be done before we do COinS because here is where
 +
we get the date used in the metadata.
  
 +
Date validation supporting code is in Module:Citation/CS1/Date_validation
 
]]
 
]]
 +
do -- create defined block to contain local variables error_message and mismatch
 +
local error_message = '';
 +
-- AirDate has been promoted to Date so not necessary to check it
 +
anchor_year, error_message = dates({['access-date']=AccessDate, ['archive-date']=ArchiveDate, ['date']=Date, ['doi-broken-date']=DoiBroken,
 +
['embargo']=Embargo, ['lay-date']=LayDate, ['publication-date']=PublicationDate, ['year']=Year}, COinS_date);
  
local function language_parameter (lang)
+
if is_set (Year) and is_set (Date) then -- both |date= and |year= not normally needed;
local code; -- the ISO639-1 two character code
+
local mismatch = year_date_check (Year, Date)
local name; -- the language name
+
if 0 == mismatch then -- |year= does not match a year-value in |date=
local language_list = {}; -- table of language names to be rendered
+
if is_set (error_message) then -- if there is already an error message
local names_table = {}; -- table made from the value assigned to |language=
+
error_message = error_message .. ', '; -- tack on this additional message
 
+
end
names_table = mw.text.split (lang, '%s*,%s*'); -- names should be a comma separated list
+
error_message = error_message .. '&#124;year= / &#124;date= mismatch';
 +
elseif 1 == mismatch then -- |year= matches year-value in |date=
 +
add_maint_cat ('date_year');
 +
end
 +
end
 +
 
 +
if is_set(error_message) then
 +
table.insert( z.message_tail, { set_error( 'bad_date', {error_message}, true ) } ); -- add this error message
 +
elseif is_set (DF) then
 +
local date_parameters_list = {['access-date']=AccessDate, ['archive-date']=ArchiveDate, ['date']=Date, ['doi-broken-date']=DoiBroken,
 +
['embargo']=Embargo, ['lay-date']=LayDate, ['publication-date']=PublicationDate};
 +
 +
if reformat_dates (date_parameters_list, DF, false) then -- reformat to DF format, use long month names if appropriate
 +
AccessDate = date_parameters_list['access-date']; -- overwrite date holding parameters with reformatted values
 +
ArchiveDate = date_parameters_list['archive-date']; -- TODO: move all dates into this table at the beginning and ...
 +
Date = date_parameters_list['date']; -- ... use them from this table? no in-and-out like we're doing here
 +
DoiBroken = date_parameters_list['doi-broken-date'];
 +
Embargo = date_parameters_list['embargo'];
 +
LayDate = date_parameters_list['lay-date'];
 +
PublicationDate = date_parameters_list['publication-date'];
 +
end
 +
end
 +
end -- end of do
  
for _, lang in ipairs (names_table) do -- reuse lang
+
-- Account for the oddity that is {{cite journal}} with |pmc= set and |url= not set.  Do this after date check but before COInS.
 +
-- Here we unset Embargo if PMC not embargoed (|embargo= not set in the citation) or if the embargo time has expired. Otherwise, holds embargo date
 +
Embargo = is_embargoed (Embargo); --  
  
if lang:match ('^%a%a%-') then -- strip ietf language tags from code
+
if config.CitationClass == "journal" and not is_set(URL) and is_set(ID_list['PMC']) then
lang = lang:match ('(%a%a)%-') -- keep only 639-1 code portion to lang; TODO: do something with 3166 alpha 2 country code?
+
if not is_set (Embargo) then -- if not embargoed or embargo has expired
 +
URL=cfg.id_handlers['PMC'].prefix .. ID_list['PMC']; -- set url to be the same as the PMC external link if not embargoed
 +
URLorigin = cfg.id_handlers['PMC'].parameters[1]; -- set URLorigin to parameter name for use in error message if citation is missing a |title=
 
end
 
end
if 2 == lang:len() then -- ISO639-1 language code are 2 characters (fetchLanguageName also supports 3 character codes)
+
end
name = mw.language.fetchLanguageName( lang:lower(), "en" ); -- get ISO 639-1 language name if Language is a proper code
+
 
end
+
-- At this point fields may be nil if they weren't specified in the template use. We can use that fact.
+
-- Test if citation has no title
if is_set (name) then -- if Language specified a valid ISO639-1 code
+
if not is_set(Title) and
code = lang:lower(); -- save it
+
not is_set(TransTitle) and
else
+
not is_set(ScriptTitle) then
name, code = get_iso639_code (lang); -- attempt to get code from name (assign name here so that we are sure of proper capitalization)
+
if 'episode' == config.CitationClass then -- special case for cite episode; TODO: is there a better way to do this?
end
+
table.insert( z.message_tail, { set_error( 'citation_missing_title', {'series'}, true ) } );
+
else
if is_set (code) then
+
table.insert( z.message_tail, { set_error( 'citation_missing_title', {'title'}, true ) } );
if 'no' == code then name = 'Norwegian' end; -- override wikimedia when code is 'no'
 
if 'en' ~= code then -- English not the language
 
add_prop_cat ('foreign_lang_source', {name, code})
 
 
end
 
end
else
 
add_maint_cat ('unknown_lang'); -- add maint category if not already added
 
end
 
 
table.insert (language_list, name);
 
name = ''; -- so we can reuse it
 
 
end
 
end
 
 
code = #language_list -- reuse code as number of languages in the list
+
if 'none' == Title and in_array (config.CitationClass, {'journal', 'citation'}) and is_set (Periodical) and 'journal' == A:ORIGIN('Periodical') then -- special case for journal cites
if 2 >= code then
+
Title = ''; -- set title to empty string
name = table.concat (language_list, ' and ') -- insert '<space>and<space>' between two language names
+
add_maint_cat ('untitled');
elseif 2 < code then
 
language_list[code] = 'and ' .. language_list[code]; -- prepend last name with 'and<space>'
 
name = table.concat (language_list, ', ') -- and concatenate with '<comma><space>' separators
 
end
 
if 'English' == name then
 
return ''; -- if one language and that language is English return an empty string (no annotation)
 
 
end
 
end
return (" " .. wrap_msg ('language', name)); -- otherwise wrap with '(in ...)'
 
end
 
  
--[[--------------------------< S E T _ C S 1 _ S T Y L E >----------------------------------------------------
+
check_for_url ({ -- add error message when any of these parameters contains a URL
 +
['title']=Title,
 +
[A:ORIGIN('Chapter')]=Chapter,
 +
[A:ORIGIN('Periodical')]=Periodical,
 +
[A:ORIGIN('PublisherName')] = PublisherName
 +
});
  
Set style settings for CS1 citation templates. Returns separator and postscript settings
+
-- COinS metadata (see <http://ocoins.info/>) for automated parsing of citation information.
 
+
-- handle the oddity that is cite encyclopedia and {{citation |encyclopedia=something}}. Here we presume that
]]
+
-- when Periodical, Title, and Chapter are all set, then Periodical is the book (encyclopedia) title, Title
 
+
-- is the article title, and Chapter is a section within the article.  So, we remap
local function set_cs1_style (ps)
+
if not is_set (ps) then -- unless explicitely set to something
+
local coins_chapter = Chapter; -- default assuming that remapping not required
ps = '.'; -- terminate the rendered citation with a period
+
local coins_title = Title; -- et tu
 +
if 'encyclopaedia' == config.CitationClass or ('citation' == config.CitationClass and is_set (Encyclopedia)) then
 +
if is_set (Chapter) and is_set (Title) and is_set (Periodical) then -- if all are used then
 +
coins_chapter = Title; -- remap
 +
coins_title = Periodical;
 +
end
 +
end
 +
local coins_author = a; -- default for coins rft.au
 +
if 0 < #c then -- but if contributor list
 +
coins_author = c; -- use that instead
 
end
 
end
return '.', ps; -- separator is a full stop
 
end
 
  
--[[--------------------------< S E T _ C S 2 _ S T Y L E >----------------------------------------------------
+
-- this is the function call to COinS()
 
+
local OCinSoutput = COinS({
Set style settings for CS2 citation templates. Returns separator, postscript, ref settings
+
['Periodical'] = Periodical,
 
+
['Encyclopedia'] = Encyclopedia,
]]
+
['Chapter'] = make_coins_title (coins_chapter, ScriptChapter), -- Chapter and ScriptChapter stripped of bold / italic wikimarkup
 
+
['Degree'] = Degree; -- cite thesis only
local function set_cs2_style (ps, ref)
+
['Title'] = make_coins_title (coins_title, ScriptTitle), -- Title and ScriptTitle stripped of bold / italic wikimarkup
if not is_set (ps) then -- if |postscript= has not been set, set cs2 default
+
['PublicationPlace'] = PublicationPlace,
ps = ''; -- make sure it isn't nil
+
['Date'] = COinS_date.rftdate, -- COinS_date has correctly formatted date if Date is valid;
 +
['Season'] = COinS_date.rftssn,
 +
['Chron'] =  COinS_date.rftchron or (not COinS_date.rftdate and Date) or '', -- chron but if not set and invalid date format use Date; keep this last bit?
 +
['Series'] = Series,
 +
['Volume'] = Volume,
 +
['Issue'] = Issue,
 +
['Pages'] = get_coins_pages (first_set ({Sheet, Sheets, Page, Pages, At}, 5)), -- pages stripped of external links
 +
['Edition'] = Edition,
 +
['PublisherName'] = PublisherName,
 +
['URL'] = first_set ({ChapterURL, URL}, 2),
 +
['Authors'] = coins_author,
 +
['ID_list'] = ID_list,
 +
['RawPage'] = this_page.prefixedText,
 +
}, config.CitationClass);
 +
 
 +
-- Account for the oddities that are {{cite arxiv}}, AFTER generation of COinS data.
 +
if 'arxiv' == config.CitationClass then -- we have set rft.jtitle in COinS to arXiv, now unset so it isn't displayed
 +
Periodical = ''; -- periodical not allowed in cite arxiv; if article has been published, use cite journal
 
end
 
end
if not is_set (ref) then -- if |ref= is not set
+
 
ref = "harv"; -- set default |ref=harv
+
-- special case for cite newsgroup.  Do this after COinS because we are modifying Publishername to include some static text
 +
if 'newsgroup' == config.CitationClass then
 +
if is_set (PublisherName) then
 +
PublisherName = substitute (cfg.messages['newsgroup'], external_link( 'news:' .. PublisherName, PublisherName, A:ORIGIN('PublisherName') ));
 +
end
 
end
 
end
return ',', ps, ref; -- separator is a comma
 
end
 
  
--[[--------------------------< G E T _ S E T T I N G S _ F R O M _ C I T E _ C L A S S >----------------------
 
  
When |mode= is not set or when its value is invalid, use config.CitationClass and parameter values to establish
 
rendered style.
 
  
]]
+
-- Now perform various field substitutions.
 +
-- We also add leading spaces and surrounding markup and punctuation to the
 +
-- various parts of the citation, but only when they are non-nil.
 +
local EditorCount; -- used only for choosing {ed.) or (eds.) annotation at end of editor name-list
 +
do
 +
local last_first_list;
 +
-- local maximum;
 +
local control = {
 +
format = NameListFormat, -- empty string or 'vanc'
 +
maximum = nil, -- as if display-authors or display-editors not set
 +
lastauthoramp = LastAuthorAmp,
 +
page_name = this_page.text -- get current page name so that we don't wikilink to it via editorlinkn
 +
};
  
local function get_settings_from_cite_class (ps, ref, cite_class)
+
do -- do editor name list first because coauthors can modify control table
local sep;
+
control.maximum , editor_etal = get_display_authors_editors (A['DisplayEditors'], #e, 'editors', editor_etal);
if (cite_class == "citation") then -- for citation templates (CS2)
+
last_first_list, EditorCount = list_people(control, e, editor_etal, 'editor');
sep, ps, ref = set_cs2_style (ps, ref);
 
else -- not a citation template so CS1
 
sep, ps = set_cs1_style (ps);
 
end
 
  
return sep, ps, ref -- return them all
+
if is_set (Editors) then
end
+
if editor_etal then
 +
Editors = Editors .. ' ' .. cfg.messages['et al']; -- add et al. to editors parameter beause |display-editors=etal
 +
EditorCount = 2; -- with et al., |editors= is multiple names; spoof to display (eds.) annotation
 +
else
 +
EditorCount = 2; -- we don't know but assume |editors= is multiple names; spoof to display (eds.) annotation
 +
end
 +
else
 +
Editors = last_first_list; -- either an author name list or an empty string
 +
end
  
--[[--------------------------< S E T _ S T Y L E >------------------------------------------------------------
+
if 1 == EditorCount and (true == editor_etal or 1 < #e) then -- only one editor displayed but includes etal then
 
+
EditorCount = 2; -- spoof to display (eds.) annotation
Establish basic style settings to be used when rendering the citation. Uses |mode= if set and valid or uses
+
end
config.CitationClass from the template's #invoke: to establish style.
+
end
 +
do -- now do translators
 +
control.maximum = #t; -- number of translators
 +
Translators = list_people(control, t, false, 'translator'); -- et al not currently supported
 +
end
 +
do -- now do contributors
 +
control.maximum = #c; -- number of contributors
 +
Contributors = list_people(control, c, false, 'contributor'); -- et al not currently supported
 +
end
 +
do -- now do authors
 +
control.maximum , author_etal = get_display_authors_editors (A['DisplayAuthors'], #a, 'authors', author_etal);
  
]]
+
if is_set(Coauthors) then -- if the coauthor field is also used, prevent ampersand and et al. formatting.
 +
control.lastauthoramp = nil;
 +
control.maximum = #a + 1;
 +
end
 +
 +
last_first_list = list_people(control, a, author_etal, 'author');
  
local function set_style (mode, ps, ref, cite_class)
+
if is_set (Authors) then
local sep;
+
Authors, author_etal = name_has_etal (Authors, author_etal, false); -- find and remove variations on et al.
if 'cs2' == mode then -- if this template is to be rendered in CS2 (citation) style
+
if author_etal then
sep, ps, ref = set_cs2_style (ps, ref);
+
Authors = Authors .. ' ' .. cfg.messages['et al']; -- add et al. to authors parameter
elseif 'cs1' == mode then -- if this template is to be rendered in CS1 (cite xxx) style
+
end
sep, ps = set_cs1_style (ps);
+
else
else -- anything but cs1 or cs2
+
Authors = last_first_list; -- either an author name list or an empty string
sep, ps, ref = get_settings_from_cite_class (ps, ref, cite_class); -- get settings based on the template's CitationClass
+
end
end
+
end -- end of do
if 'none' == ps:lower() then -- if assigned value is 'none' then
 
ps = ''; -- set to empty string
 
end
 
 
 
return sep, ps, ref
+
if is_set (Authors) and is_set (Collaboration) then
end
+
Authors = Authors .. ' (' .. Collaboration .. ')'; -- add collaboration after et al.
 +
end
  
--[=[-------------------------< I S _ P D F >------------------------------------------------------------------
+
if not is_set(Authors) and is_set(Coauthors) then -- coauthors aren't displayed if one of authors=, authorn=, or lastn= isn't specified
 +
table.insert( z.message_tail, { set_error('coauthors_missing_author', {}, true) } ); -- emit error message
 +
end
 +
end
  
Determines if a url has the file extension that is one of the pdf file extensions used by [[MediaWiki:Common.css]] when
+
-- apply |[xx-]format= styling; at the end, these parameters hold correctly styled format annotation,
applying the pdf icon to external links.
+
-- an error message if the associated url is not set, or an empty string for concatenation
 +
ArchiveFormat = style_format (ArchiveFormat, ArchiveURL, 'archive-format', 'archive-url');
 +
ConferenceFormat = style_format (ConferenceFormat, ConferenceURL, 'conference-format', 'conference-url');
 +
Format = style_format (Format, URL, 'format', 'url');
 +
LayFormat = style_format (LayFormat, LayURL, 'lay-format', 'lay-url');
 +
TranscriptFormat = style_format (TranscriptFormat, TranscriptURL, 'transcript-format', 'transcripturl');
  
returns true if file extension is one of the recognized extension, else false
+
-- special case for chapter format so no error message or cat when chapter not supported
 +
if not (in_array(config.CitationClass, {'web','news','journal', 'magazine', 'pressrelease','podcast', 'newsgroup', 'arxiv'}) or
 +
('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia))) then
 +
ChapterFormat = style_format (ChapterFormat, ChapterURL, 'chapter-format', 'chapter-url');
 +
end
  
]=]
+
if  not is_set(URL) then --and
 
+
if in_array(config.CitationClass, {"web","podcast", "mailinglist"}) then -- Test if cite web or cite podcast |url= is missing or empty
local function is_pdf (url)
+
table.insert( z.message_tail, { set_error( 'cite_web_url', {}, true ) } );
return url:match ('%.pdf[%?#]?') or url:match ('%.PDF[%?#]?');
+
end
end
+
 
+
-- Test if accessdate is given without giving a URL
--[[--------------------------< S T Y L E _ F O R M A T >------------------------------------------------------
+
if is_set(AccessDate) and not is_set(ChapterURL)then -- ChapterURL may be set when the others are not set; TODO: move this to a separate test?
 
+
table.insert( z.message_tail, { set_error( 'accessdate_missing_url', {}, true ) } );
Applies css style to |format=, |chapter-format=, etc.  Also emits an error message if the format parameter does
+
AccessDate = '';
not have a matching url parameter.  If the format parameter is not set and the url contains a file extension that
 
is recognized as a pdf document by MediaWiki's commons.css, this code will set the format parameter to (PDF) with
 
the appropriate styling.
 
 
 
]]
 
 
 
local function style_format (format, url, fmt_param, url_param)
 
if is_set (format) then
 
format = wrap_style ('format', format); -- add leading space, parenthases, resize
 
if not is_set (url) then
 
format = format .. set_error( 'format_missing_url', {fmt_param, url_param} ); -- add an error message
 
 
end
 
end
elseif is_pdf (url) then -- format is not set so if url is a pdf file then
 
format = wrap_style ('format', 'PDF'); -- set format to pdf
 
else
 
format = ''; -- empty string for concatenation
 
 
end
 
end
return format;
 
end
 
  
--[[--------------------------< G E T _ D I S P L A Y _ A U T H O R S _ E D I T O R S >------------------------
+
local OriginalURL, OriginalURLorigin, OriginalFormat; -- TODO: swap chapter and title here so that archive applies to most specific if both are set?
 
+
DeadURL = DeadURL:lower(); -- used later when assembling archived text
Returns a number that may or may not limit the length of the author or editor name lists.
+
if is_set( ArchiveURL ) then
 
+
if is_set (URL) then
When the value assigned to |display-authors= is a number greater than or equal to zero, return the number and
+
OriginalURL = URL; -- save copy of original source URL
the previous state of the 'etal' flag (false by default but may have been set to true if the name list contains
+
OriginalURLorigin = URLorigin; -- name of url parameter for error messages
some variant of the text 'et al.').
+
OriginalFormat = Format; -- and original |format=
 
+
if 'no' ~= DeadURL then -- if URL set then archive-url applies to it
When the value assigned to |display-authors= is the keyword 'etal', return a number that is one greater than the
+
URL = ArchiveURL -- swap-in the archive's url
number of authors in the list and set the 'etal' flag true.  This will cause the list_people() to display all of
+
URLorigin = A:ORIGIN('ArchiveURL') -- name of archive url parameter for error messages
the names in the name list followed by 'et al.'
+
Format = ArchiveFormat or ''; -- swap in archive's format
 
+
end
In all other cases, returns nil and the previous state of the 'etal' flag.
+
elseif is_set (ChapterURL) then -- URL not set so if chapter-url is set apply archive url to it
 
+
OriginalURL = ChapterURL; -- save copy of source chapter's url for archive text
]]
+
OriginalURLorigin = ChapterURLorigin; -- name of chapter-url parameter for error messages
 
+
OriginalFormat = ChapterFormat; -- and original |format=
local function get_display_authors_editors (max, count, list_name, etal)
+
if 'no' ~= DeadURL then
if is_set (max) then
+
ChapterURL = ArchiveURL -- swap-in the archive's url
if 'etal' == max:lower():gsub("[ '%.]", '') then -- the :gsub() portion makes 'etal' from a variety of 'et al.' spellings and stylings
+
ChapterURLorigin = A:ORIGIN('ArchiveURL') -- name of archive-url parameter for error messages
max = count + 1; -- number of authors + 1 so display all author name plus et al.
+
ChapterFormat = ArchiveFormat or ''; -- swap in archive's format
etal = true; -- overrides value set by extract_names()
 
elseif max:match ('^%d+$') then -- if is a string of numbers
 
max = tonumber (max); -- make it a number
 
if max >= count and 'authors' == list_name then -- AUTHORS ONLY -- if |display-xxxxors= value greater than or equal to number of authors/editors
 
add_maint_cat ('disp_auth_ed', list_name);
 
 
end
 
end
else -- not a valid keyword or number
 
table.insert( z.message_tail, { set_error( 'invalid_param_val', {'display-' .. list_name, max}, true ) } ); -- add error message
 
max = nil; -- unset
 
 
end
 
end
elseif 'authors' == list_name then -- AUTHORS ONLY need to clear implicit et al category
 
max = count + 1; -- number of authors + 1
 
 
end
 
end
 
return max, etal;
 
end
 
  
--[[--------------------------< E X T R A _ T E X T _ I N _ P A G E _ C H E C K >------------------------------
+
if in_array(config.CitationClass, {'web','news','journal', 'magazine', 'pressrelease','podcast', 'newsgroup', 'arxiv'}) or -- if any of the 'periodical' cites except encyclopedia
 +
('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) then
 +
local chap_param;
 +
if is_set (Chapter) then -- get a parameter name from one of these chapter related meta-parameters
 +
chap_param = A:ORIGIN ('Chapter')
 +
elseif is_set (TransChapter) then
 +
chap_param = A:ORIGIN ('TransChapter')
 +
elseif is_set (ChapterURL) then
 +
chap_param = A:ORIGIN ('ChapterURL')
 +
elseif is_set (ScriptChapter) then
 +
chap_param = A:ORIGIN ('ScriptChapter')
 +
else is_set (ChapterFormat)
 +
chap_param = A:ORIGIN ('ChapterFormat')
 +
end
  
Adds page to Category:CS1 maint: extra text if |page= or |pages= has what appears to be some form of p. or pp.
+
if is_set (chap_param) then -- if we found one
abbreviation in the first characters of the parameter content.
+
table.insert( z.message_tail, { set_error( 'chapter_ignored', {chap_param}, true ) } ); -- add error message
 +
Chapter = ''; -- and set them to empty string to be safe with concatenation
 +
TransChapter = '';
 +
ChapterURL = '';
 +
ScriptChapter = '';
 +
ChapterFormat = '';
 +
end
 +
else -- otherwise, format chapter / article title
 +
local no_quotes = false; -- default assume that we will be quoting the chapter parameter value
 +
if is_set (Contribution) and 0 < #c then -- if this is a contribution with contributor(s)
 +
if in_array (Contribution:lower(), cfg.keywords.contribution) then -- and a generic contribution title
 +
no_quotes = true; -- then render it unquoted
 +
end
 +
end
  
check Page and Pages for extraneous p, p., pp, and pp. at start of parameter value:
+
Chapter = format_chapter_title (ScriptChapter, Chapter, TransChapter, ChapterURL, ChapterURLorigin, no_quotes); -- Contribution is also in Chapter
good pattern: '^P[^%.P%l]' matches when |page(s)= begins PX or P# but not Px where x and X are letters and # is a dgiit
+
if is_set (Chapter) then
bad pattern: '^[Pp][Pp]' matches matches when |page(s)= begins pp or pP or Pp or PP
+
if 'map' == config.CitationClass and is_set (TitleType) then
 
+
Chapter = Chapter .. ' ' .. TitleType;
]]
+
end
 +
Chapter = Chapter .. ChapterFormat .. sepc .. ' ';
 +
elseif is_set (ChapterFormat) then -- |chapter= not set but |chapter-format= is so ...
 +
Chapter = ChapterFormat .. sepc .. ' '; -- ... ChapterFormat has error message, we want to see it
 +
end
 +
end
  
local function extra_text_in_page_check (page)
+
-- Format main title.
-- local good_pattern = '^P[^%.P%l]';
+
if is_set(TitleLink) and is_set(Title) then
local good_pattern = '^P[^%.Pp]'; -- ok to begin with uppercase P: P7 (pg 7 of section P) but not p123 (page 123) TODO: add Gg for PG or Pg?
+
Title = "[[" .. TitleLink .. "|" .. Title .. "]]"
-- local bad_pattern = '^[Pp][Pp]';
 
local bad_pattern = '^[Pp]?[Pp]%.?[ %d]';
 
 
 
if not page:match (good_pattern) and (page:match (bad_pattern) or  page:match ('^[Pp]ages?')) then
 
add_maint_cat ('extra_text');
 
 
end
 
end
-- if Page:match ('^[Pp]?[Pp]%.?[ %d]') or  Page:match ('^[Pp]ages?[ %d]') or
 
-- Pages:match ('^[Pp]?[Pp]%.?[ %d]') or  Pages:match ('^[Pp]ages?[ %d]') then
 
-- add_maint_cat ('extra_text');
 
-- end
 
end
 
  
 +
if in_array(config.CitationClass, {'web','news','journal', 'magazine', 'pressrelease','podcast', 'newsgroup', 'mailinglist', 'arxiv'}) or
 +
('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) or
 +
('map' == config.CitationClass and is_set (Periodical)) then -- special case for cite map when the map is in a periodical treat as an article
 +
Title = kern_quotes (Title); -- if necessary, separate title's leading and trailing quote marks from Module provided quote marks
 +
Title = wrap_style ('quoted-title', Title);
 +
 +
Title = script_concatenate (Title, ScriptTitle); -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
 +
TransTitle= wrap_style ('trans-quoted-title', TransTitle );
 +
elseif 'report' == config.CitationClass then -- no styling for cite report
 +
Title = script_concatenate (Title, ScriptTitle); -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
 +
TransTitle= wrap_style ('trans-quoted-title', TransTitle ); -- for cite report, use this form for trans-title
 +
else
 +
Title = wrap_style ('italic-title', Title);
 +
Title = script_concatenate (Title, ScriptTitle); -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
 +
TransTitle = wrap_style ('trans-italic-title', TransTitle);
 +
end
  
--[[--------------------------< P A R S E _ V A U T H O R S _ V E D I T O R S >--------------------------------
+
local TransError = "";
 
+
if is_set(TransTitle) then
This function extracts author / editor names from |vauthors= or |veditors= and finds matching |xxxxor-maskn= and
+
if is_set(Title) then
|xxxxor-linkn= in args. It then returns a table of assembled names just as extract_names() does.
+
TransTitle = " " .. TransTitle;
 
+
else
Author / editor names in |vauthors= or |veditors= must be in Vancouver system style. Corporate or institutional names
+
TransError = " " .. set_error( 'trans_missing_title', {'title'} );
may sometimes be required and because such names will often fail the is_good_vanc_name() and other format compliance
+
end
tests, are wrapped in doubled paranethese ((corporate name)) to suppress the format tests.
+
end
 +
 +
Title = Title .. TransTitle;
 +
 +
if is_set(Title) then
 +
if not is_set(TitleLink) and is_set(URL) then
 +
Title = external_link( URL, Title, URLorigin ) .. TransError .. Format;
 +
URL = "";
 +
Format = "";
 +
else
 +
Title = Title .. TransError;
 +
end
 +
end
  
This function sets the vancouver error when a reqired comma is missing and when there is a space between an author's initials.
+
if is_set(Place) then
 +
Place = " " .. wrap_msg ('written', Place, use_lowercase) .. sepc .. " ";
 +
end
  
]]
+
if is_set (Conference) then
 
+
if is_set (ConferenceURL) then
local function parse_vauthors_veditors (args, vparam, list_name)
+
Conference = external_link( ConferenceURL, Conference, ConferenceURLorigin );
local names = {}; -- table of names assembled from |vauthors=, |author-maskn=, |author-linkn=
+
end
local v_name_table = {};
+
Conference = sepc .. " " .. Conference .. ConferenceFormat;
local etal = false; -- return value set to true when we find some form of et al. vauthors parameter
+
elseif is_set(ConferenceURL) then
local last, first, link, mask;
+
Conference = sepc .. " " .. external_link( ConferenceURL, nil, ConferenceURLorigin );
local corporate = false;
+
end
  
vparam, etal = name_has_etal (vparam, etal, true); -- find and remove variations on et al. do not categorize (do it here because et al. might have a period)
+
if not is_set(Position) then
if vparam:find ('%[%[') or vparam:find ('%]%]') then -- no wikilinking vauthors names
+
local Minutes = A['Minutes'];
add_vanc_error ();
+
local Time = A['Time'];
end
 
v_name_table = mw.text.split(vparam, "%s*,%s*") -- names are separated by commas
 
  
for i, v_name in ipairs(v_name_table) do
+
if is_set(Minutes) then
if v_name:match ('^%(%(.+%)%)$') then -- corporate authors are wrapped in doubled parenthese to supress vanc formatting and error detection
+
if is_set (Time) then
first = ''; -- set to empty string for concatenation and because it may have been set for previous author/editor
+
table.insert( z.message_tail, { set_error( 'redundant_parameters', {wrap_style ('parameter', 'minutes') .. ' and ' .. wrap_style ('parameter', 'time')}, true ) } );
last = v_name:match ('^%(%((.+)%)%)$')
 
corporate = true;
 
elseif string.find(v_name, "%s") then
 
    lastfirstTable = {}
 
    lastfirstTable = mw.text.split(v_name, "%s")
 
    first = table.remove(lastfirstTable); -- removes and returns value of last element in table which should be author intials
 
    last  = table.concat(lastfirstTable, " ") -- returns a string that is the concatenation of all other names that are not initials
 
    if mw.ustring.match (last, '%a+%s+%u+%s+%a+') or mw.ustring.match (v_name, ' %u %u$') then
 
add_vanc_error (); -- matches last II last; the case when a comma is missing or a space between two intiials
 
 
end
 
end
 +
Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
 
else
 
else
first = ''; -- set to empty string for concatenation and because it may have been set for previous author/editor
+
if is_set(Time) then
last = v_name; -- last name or single corporate name?  Doesn't support multiword corporate names? do we need this?
+
local TimeCaption = A['TimeCaption']
end
+
if not is_set(TimeCaption) then
+
TimeCaption = cfg.messages['event'];
if is_set (first) and not mw.ustring.match (first, "^%u?%u$") then -- first shall contain one or two upper-case letters, nothing else
+
if sepc ~= '.' then
add_vanc_error ();
+
TimeCaption = TimeCaption:lower();
 +
end
 +
end
 +
Position = " " .. TimeCaption .. " " .. Time;
 +
end
 
end
 
end
-- this from extract_names ()
+
else
link = select_one( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i );
+
Position = " " .. Position;
mask = select_one( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i );
+
At = '';
names[i] = {last = last, first = first, link = link, mask = mask, corporate=corporate}; -- add this assembled name to our names list
 
 
end
 
end
return names, etal; -- all done, return our list of names
 
end
 
  
--[[--------------------------< S E L E C T _ A U T H O R _ E D I T O R _ S O U R C E >------------------------
+
Page, Pages, Sheet, Sheets = format_pages_sheets (Page, Pages, Sheet, Sheets, config.CitationClass, Periodical_origin, sepc, NoPP, use_lowercase);
  
Select one of |authors=, |authorn= / |lastn / firstn=, or |vauthors= as the source of the author name list or
+
At = is_set(At) and (sepc .. " " .. At) or "";
select one of |editors=, |editorn= / editor-lastn= / |editor-firstn= or |veditors= as the source of the editor name list.
+
Position = is_set(Position) and (sepc .. " " .. Position) or "";
 +
if config.CitationClass == 'map' then
 +
local Section = A['Section'];
 +
local Sections = A['Sections'];
 +
local Inset = A['Inset'];
 +
 +
if is_set( Inset ) then
 +
Inset = sepc .. " " .. wrap_msg ('inset', Inset, use_lowercase);
 +
end
  
Only one of these appropriate three will be used. The hierarchy is: |authorn= (and aliases) highest and |authors= lowest and
+
if is_set( Sections ) then
similarly, |editorn= (and aliases) highest and |editors= lowest
+
Section = sepc .. " " .. wrap_msg ('sections', Sections, use_lowercase);
 +
elseif is_set( Section ) then
 +
Section = sepc .. " " .. wrap_msg ('section', Section, use_lowercase);
 +
end
 +
At = At .. Inset .. Section;
 +
end
  
When looking for |authorn= / |editorn= parameters, test |xxxxor1= and |xxxxor2= (and all of their aliases); stops after the second
+
if is_set (Language) then
test which mimicks the test used in extract_names() when looking for a hole in the author name list.  There may be a better
+
Language = language_parameter (Language); -- format, categories, name from ISO639-1, etc
way to do this, I just haven't discovered what that way is.
+
else
 +
Language=""; -- language not specified so make sure this is an empty string;
 +
end
  
Emits an error message when more than one xxxxor name source is provided.
+
Others = is_set(Others) and (sepc .. " " .. Others) or "";
 +
 +
if is_set (Translators) then
 +
Others = sepc .. ' Translated by ' .. Translators .. Others;
 +
end
  
In this function, vxxxxors = vauthors or veditors; xxxxors = authors or editors as appropriate.
+
TitleNote = is_set(TitleNote) and (sepc .. " " .. TitleNote) or "";
 +
if is_set (Edition) then
 +
if Edition:match ('%f[%a][Ee]d%.?$') or Edition:match ('%f[%a][Ee]dition$') then
 +
add_maint_cat ('extra_text', 'edition');
 +
end
 +
Edition = " " .. wrap_msg ('edition', Edition);
 +
else
 +
Edition = '';
 +
end
  
]]
+
Series = is_set(Series) and (sepc .. " " .. Series) or "";
 +
OrigYear = is_set(OrigYear) and (" [" .. OrigYear .. "]") or "";
 +
Agency = is_set(Agency) and (sepc .. " " .. Agency) or "";
  
local function select_author_editor_source (vxxxxors, xxxxors, args, list_name)
+
Volume = format_volume_issue (Volume, Issue, config.CitationClass, Periodical_origin, sepc, use_lowercase);
local lastfirst = false;
 
if select_one( args, cfg.aliases[list_name .. '-Last'], 'none', 1 ) or -- do this twice incase we have a first 1 without a last1
 
select_one( args, cfg.aliases[list_name .. '-Last'], 'none', 2 ) then
 
lastfirst=true;
 
end
 
  
if (is_set (vxxxxors) and true == lastfirst) or -- these are the three error conditions
+
------------------------------------ totally unrelated data
(is_set (vxxxxors) and is_set (xxxxors)) or
+
if is_set(Via) then
(true == lastfirst and is_set (xxxxors)) then
+
Via = " " .. wrap_msg ('via', Via);
local err_name;
 
if 'AuthorList' == list_name then -- figure out which name should be used in error message
 
err_name = 'author';
 
else
 
err_name = 'editor';
 
end
 
table.insert( z.message_tail, { set_error( 'redundant_parameters',
 
{err_name .. '-name-list parameters'}, true ) } ); -- add error message
 
 
end
 
end
  
if true == lastfirst then return 1 end; -- return a number indicating which author name source to use
+
--[[
if is_set (vxxxxors) then return 2 end;
+
Subscription implies paywall; Registration does not.  If both are used in a citation, the subscription required link
if is_set (xxxxors) then return 3 end;
+
note is displayed. There are no error messages for this condition.
return 1; -- no authors so return 1; this allows missing author name test to run in case there is a first without last
 
end
 
  
 +
]]
 +
if is_set (SubscriptionRequired) then
 +
SubscriptionRequired = sepc .. " " .. cfg.messages['subscription']; -- subscription required message
 +
elseif is_set (RegistrationRequired) then
 +
SubscriptionRequired = sepc .. " " .. cfg.messages['registration']; -- registration required message
 +
else
 +
SubscriptionRequired = ''; -- either or both might be set to something other than yes true y
 +
end
  
--[[--------------------------< I S _ V A L I D _ P A R A M E T E R _ V A L U E >------------------------------
+
if is_set(AccessDate) then
 +
local retrv_text = " " .. cfg.messages['retrieved']
  
This function is used to validate a parameter's assigned value for those parameters that have only a limited number
+
AccessDate = nowrap_date (AccessDate); -- wrap in nowrap span if date in appropriate format
of allowable values (yes, y, true, no, etc). When the parameter value has not been assigned a value (missing or empty
+
if (sepc ~= ".") then retrv_text = retrv_text:lower() end -- if 'citation', lower case
in the source template) the function refurns true. If the parameter value is one of the list of allowed values returns
+
AccessDate = substitute (retrv_text, AccessDate); -- add retrieved text
true; else, emits an error message and returns false.
+
-- neither of these work; don't know why; it seems that substitute() isn't being called
 +
AccessDate = substitute (cfg.presentation['accessdate'], {sepc, AccessDate}); -- allow editors to hide accessdates
 +
end
 +
 +
if is_set(ID) then ID = sepc .." ".. ID; end
 +
  if "thesis" == config.CitationClass and is_set(Docket) then
 +
ID = sepc .." Docket ".. Docket .. ID;
 +
end
 +
  if "report" == config.CitationClass and is_set(Docket) then -- for cite report when |docket= is set
 +
ID = sepc .. ' ' .. Docket; -- overwrite ID even if |id= is set
 +
end
  
]]
+
ID_list = build_id_list( ID_list, {DoiBroken = DoiBroken, ASINTLD = ASINTLD, IgnoreISBN = IgnoreISBN, Embargo=Embargo, Class = Class} );
  
local function is_valid_parameter_value (value, name, possible)
+
if is_set(URL) then
if not is_set (value) then
+
URL = " " .. external_link( URL, nil, URLorigin );
return true; -- an empty parameter is ok
 
elseif in_array(value:lower(), possible) then
 
return true;
 
else
 
table.insert( z.message_tail, { set_error( 'invalid_param_val', {name, value}, true ) } ); -- not an allowed value so add error message
 
return false
 
 
end
 
end
end
 
  
 
+
if is_set(Quote) then
--[[--------------------------< T E R M I N A T E _ N A M E _ L I S T >----------------------------------------
+
if Quote:sub(1,1) == '"' and Quote:sub(-1,-1) == '"' then -- if first and last characters of quote are quote marks
 
+
Quote = Quote:sub(2,-2); -- strip them off
This function terminates a name list (author, contributor, editor) with a separator character (sepc) and a space
+
end
when the last character is not a sepc character or when the last three characters are not sepc followed by two
+
Quote = sepc .." " .. wrap_style ('quoted-text', Quote ); -- wrap in <q>...</q> tags
closing square brackets (close of a wikilink).  When either of these is true, the name_list is terminated with a
+
PostScript = ""; -- cs1|2 does not supply terminal punctuation when |quote= is set
single space character.
 
 
 
]]
 
 
 
local function terminate_name_list (name_list, sepc)
 
if (string.sub (name_list,-1,-1) == sepc) or (string.sub (name_list,-3,-1) == sepc .. ']]') then -- if last name in list ends with sepc char
 
return name_list .. " "; -- don't add another
 
else
 
return name_list .. sepc .. ' '; -- otherwise terninate the name list
 
 
end
 
end
end
 
 
 
--[[-------------------------< F O R M A T _ V O L U M E _ I S S U E >----------------------------------------
 
 
returns the concatenation of the formatted volume and issue parameters as a single string; or formatted volume
 
or formatted issue, or an empty string if neither are set.
 
 
]]
 
 
 
local function format_volume_issue (volume, issue, cite_class, origin, sepc, lower)
+
local Archived
if not is_set (volume) and not is_set (issue) then
+
if is_set(ArchiveURL) then
return '';
+
if not is_set(ArchiveDate) then
end
+
ArchiveDate = set_error('archive_missing_date');
+
end
if 'magazine' == cite_class or (in_array (cite_class, {'citation', 'map'}) and 'magazine' == origin) then
+
if "no" == DeadURL then
if is_set (volume) and is_set (issue) then
+
local arch_text = cfg.messages['archived'];
return wrap_msg ('vol-no', {sepc, volume, issue}, lower);
+
if sepc ~= "." then arch_text = arch_text:lower() end
elseif is_set (volume) then
+
Archived = sepc .. " " .. substitute( cfg.messages['archived-not-dead'],
return wrap_msg ('vol', {sepc, volume}, lower);
+
{ external_link( ArchiveURL, arch_text, A:ORIGIN('ArchiveURL') ) .. ArchiveFormat, ArchiveDate } );
 +
if not is_set(OriginalURL) then
 +
Archived = Archived .. " " .. set_error('archive_missing_url');  
 +
end
 +
elseif is_set(OriginalURL) then -- DeadURL is empty, 'yes', 'true', 'y', 'unfit', 'usurped'
 +
local arch_text = cfg.messages['archived-dead'];
 +
if sepc ~= "." then arch_text = arch_text:lower() end
 +
if in_array (DeadURL, {'unfit', 'usurped'}) then
 +
Archived = sepc .. " " .. 'Archived from the original on ' .. ArchiveDate; -- format already styled
 +
else -- DeadURL is empty, 'yes', 'true', or 'y'
 +
Archived = sepc .. " " .. substitute( arch_text,
 +
{ external_link( OriginalURL, cfg.messages['original'], OriginalURLorigin ) .. OriginalFormat, ArchiveDate } ); -- format already styled
 +
end
 
else
 
else
return wrap_msg ('issue', {sepc, issue}, lower);
+
local arch_text = cfg.messages['archived-missing'];
 +
if sepc ~= "." then arch_text = arch_text:lower() end
 +
Archived = sepc .. " " .. substitute( arch_text,  
 +
{ set_error('archive_missing_url'), ArchiveDate } );
 
end
 
end
 +
elseif is_set (ArchiveFormat) then
 +
Archived = ArchiveFormat; -- if set and ArchiveURL not set ArchiveFormat has error message
 +
else
 +
Archived = ""
 
end
 
end
 
 
local vol = '';
+
local Lay = '';
+
if is_set(LayURL) then
if is_set (volume) then
+
if is_set(LayDate) then LayDate = " (" .. LayDate .. ")" end
if (4 < mw.ustring.len(volume)) then
+
if is_set(LaySource) then  
vol = substitute (cfg.messages['j-vol'], {sepc, volume});
+
LaySource = " &ndash; ''" .. safe_for_italics(LaySource) .. "''";
 
else
 
else
vol = wrap_style ('vol-bold', hyphen_to_dash(volume));
+
LaySource = "";
 
end
 
end
 +
if sepc == '.' then
 +
Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary'], A:ORIGIN('LayURL') ) .. LayFormat .. LaySource .. LayDate
 +
else
 +
Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary']:lower(), A:ORIGIN('LayURL') ) .. LayFormat .. LaySource .. LayDate
 +
end
 +
elseif is_set (LayFormat) then -- Test if |lay-format= is given without giving a |lay-url=
 +
Lay = sepc .. LayFormat; -- if set and LayURL not set, then LayFormat has error message
 
end
 
end
if is_set (issue) then
+
 
return vol .. substitute (cfg.messages['j-issue'], issue);
+
if is_set(Transcript) then
 +
if is_set(TranscriptURL) then
 +
Transcript = external_link( TranscriptURL, Transcript, TranscriptURLorigin );
 +
end
 +
Transcript = sepc .. ' ' .. Transcript .. TranscriptFormat;
 +
elseif is_set(TranscriptURL) then
 +
Transcript = external_link( TranscriptURL, nil, TranscriptURLorigin );
 
end
 
end
return vol;
 
end
 
  
 
+
local Publisher;
--[[-------------------------< F O R M A T _ P A G E S _ S H E E T S >-----------------------------------------
+
if is_set(Periodical) and
 
+
not in_array(config.CitationClass, {"encyclopaedia","web","pressrelease","podcast"}) then
adds static text to one of |page(s)= or |sheet(s)= values and returns it with all of the others set to empty strings.
+
if is_set(PublisherName) then
The return order is:
+
if is_set(PublicationPlace) then
page, pages, sheet, sheets
+
Publisher = PublicationPlace .. ": " .. PublisherName;
 
+
else
Singular has priority over plural when both are provided.
+
Publisher = PublisherName;
 
 
]]
 
 
 
local function format_pages_sheets (page, pages, sheet, sheets, cite_class, origin, sepc, nopp, lower)
 
if 'map' == cite_class then -- only cite map supports sheet(s) as in-source locators
 
if is_set (sheet) then
 
if 'journal' == origin then
 
return '', '', wrap_msg ('j-sheet', sheet, lower), '';
 
else
 
return '', '', wrap_msg ('sheet', {sepc, sheet}, lower), '';
 
 
end
 
end
elseif is_set (sheets) then
+
elseif is_set(PublicationPlace) then
if 'journal' == origin then
+
Publisher= PublicationPlace;
return '', '', '', wrap_msg ('j-sheets', sheets, lower);
+
else
 +
Publisher = "";
 +
end
 +
if is_set(PublicationDate) then
 +
if is_set(Publisher) then
 +
Publisher = Publisher .. ", " .. wrap_msg ('published', PublicationDate);
 
else
 
else
return '', '', '', wrap_msg ('sheets', {sepc, sheets}, lower);
+
Publisher = PublicationDate;
 
end
 
end
 
end
 
end
end
+
if is_set(Publisher) then
 
+
Publisher = " (" .. Publisher .. ")";
local is_journal = 'journal' == cite_class or (in_array (cite_class, {'citation', 'map'}) and 'journal' == origin);
 
 
 
if is_set (page) then
 
if is_journal then
 
return substitute (cfg.messages['j-page(s)'], page), '', '', '';
 
elseif not nopp then
 
return substitute (cfg.messages['p-prefix'], {sepc, page}), '', '', '';
 
else
 
return substitute (cfg.messages['nopp'], {sepc, page}), '', '', '';
 
 
end
 
end
elseif is_set(pages) then
+
else
if is_journal then
+
if is_set(PublicationDate) then
return substitute (cfg.messages['j-page(s)'], pages), '', '', '';
+
PublicationDate = " (" .. wrap_msg ('published', PublicationDate) .. ")";
elseif tonumber(pages) ~= nil and not nopp then -- if pages is only digits, assume a single page number
+
end
return '', substitute (cfg.messages['p-prefix'], {sepc, pages}), '', '';
+
if is_set(PublisherName) then
elseif not nopp then
+
if is_set(PublicationPlace) then
return '', substitute (cfg.messages['pp-prefix'], {sepc, pages}), '', '';
+
Publisher = sepc .. " " .. PublicationPlace .. ": " .. PublisherName .. PublicationDate;
else
+
else
return '', substitute (cfg.messages['nopp'], {sepc, pages}), '', '';
+
Publisher = sepc .. " " .. PublisherName .. PublicationDate;
 +
end
 +
elseif is_set(PublicationPlace) then  
 +
Publisher= sepc .. " " .. PublicationPlace .. PublicationDate;
 +
else  
 +
Publisher = PublicationDate;
 
end
 
end
 
end
 
end
 
 
return '', '', '', ''; -- return empty strings
+
-- Several of the above rely upon detecting this as nil, so do it last.
end
+
if is_set(Periodical) then
 
+
if is_set(Title) or is_set(TitleNote) then
--[[--------------------------< C I T A T I O N 0 >------------------------------------------------------------
+
Periodical = sepc .. " " .. wrap_style ('italic-title', Periodical)
 
+
else
This is the main function doing the majority of the citation formatting.
+
Periodical = wrap_style ('italic-title', Periodical)
 +
end
 +
end
  
 +
--[[
 +
Handle the oddity that is cite speech.  This code overrides whatever may be the value assigned to TitleNote (through |department=) and forces it to be " (Speech)" so that
 +
the annotation directly follows the |title= parameter value in the citation rather than the |event= parameter value (if provided).
 
]]
 
]]
 
+
if "speech" == config.CitationClass then -- cite speech only
local function citation0( config, args)
+
TitleNote = " (Speech)"; -- annotate the citation
--[[
+
if is_set (Periodical) then -- if Periodical, perhaps because of an included |website= or |journal= parameter
Load Input Parameters
+
if is_set (Conference) then -- and if |event= is set
The argument_wrapper facilitates the mapping of multiple aliases to single internal variable.
+
Conference = Conference .. sepc .. " "; -- then add appropriate punctuation to the end of the Conference variable before rendering
]]
+
end
local A = argument_wrapper( args );
 
local i
 
 
 
-- Pick out the relevant fields from the arguments.  Different citation templates
 
-- define different field names for the same underlying things.
 
local author_etal;
 
local a = {}; -- authors list from |lastn= / |firstn= pairs or |vauthors=
 
local Authors;
 
local NameListFormat = A['NameListFormat'];
 
 
 
do -- to limit scope of selected
 
local selected = select_author_editor_source (A['Vauthors'], A['Authors'], args, 'AuthorList');
 
if 1 == selected then
 
a, author_etal = extract_names (args, 'AuthorList'); -- fetch author list from |authorn= / |lastn= / |firstn=, |author-linkn=, and |author-maskn=
 
elseif 2 == selected then
 
NameListFormat = 'vanc'; -- override whatever |name-list-format= might be
 
a, author_etal = parse_vauthors_veditors (args, args.vauthors, 'AuthorList'); -- fetch author list from |vauthors=, |author-linkn=, and |author-maskn=
 
elseif 3 == selected then
 
Authors = A['Authors']; -- use content of |authors=
 
 
end
 
end
 
end
 
end
  
local Coauthors = A['Coauthors'];
+
-- Piece all bits together at last.  Here, all should be non-nil.
local Others = A['Others'];
+
-- We build things this way because it is more efficient in LUA
 +
-- not to keep reassigning to the same string variable over and over.
  
local editor_etal;
+
local tcommon;
local e = {}; -- editors list from |editor-lastn= / |editor-firstn= pairs or |veditors=
+
local tcommon2; -- used for book cite when |contributor= is set
local Editors;
+
 
+
if in_array(config.CitationClass, {"journal","citation"}) and is_set(Periodical) then
do -- to limit scope of selected
+
if is_set(Others) then Others = Others .. sepc .. " " end
local selected = select_author_editor_source (A['Veditors'], A['Editors'], args, 'EditorList');
+
tcommon = safe_join( {Others, Title, TitleNote, Conference, Periodical, Format, TitleType, Series,
if 1 == selected then
+
Language, Edition, Publisher, Agency, Volume}, sepc );
e, editor_etal = extract_names (args, 'EditorList'); -- fetch editor list from |editorn= / |editor-lastn= / |editor-firstn=, |editor-linkn=, and |editor-maskn=
+
elseif 2 == selected then
+
elseif in_array(config.CitationClass, {"book","citation"}) and not is_set(Periodical) then -- special cases for book cites
NameListFormat = 'vanc'; -- override whatever |name-list-format= might be
+
if is_set (Contributors) then -- when we are citing foreword, preface, introduction, etc
e, editor_etal = parse_vauthors_veditors (args, args.veditors, 'EditorList'); -- fetch editor list from |veditors=, |editor-linkn=, and |editor-maskn=
+
tcommon = safe_join( {Title, TitleNote}, sepc ); -- author and other stuff will come after this and before tcommon2
elseif 3 == selected then
+
tcommon2 = safe_join( {Conference, Periodical, Format, TitleType, Series, Language, Volume, Others, Edition, Publisher, Agency}, sepc );
Editors = A['Editors']; -- use content of |editors=
+
else
 +
tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language, Volume, Others, Edition, Publisher, Agency}, sepc );
 
end
 
end
end
 
  
local t = {}; -- translators list from |translator-lastn= / translator-firstn= pairs
+
elseif 'map' == config.CitationClass then -- special cases for cite map
local Translators; -- assembled translators name list
+
if is_set (Chapter) then -- map in a book; TitleType is part of Chapter
t = extract_names (args, 'TranslatorList'); -- fetch translator list from |translatorn= / |translator-lastn=, -firstn=, -linkn=, -maskn=
+
tcommon = safe_join( {Title, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher, Volume}, sepc );
+
elseif is_set (Periodical) then -- map in a periodical
local c = {}; -- contributors list from |contributor-lastn= / contributor-firstn= pairs
+
tcommon = safe_join( {Title, TitleType, Format, Periodical, Scale, Series, Language, Cartography, Others, Publisher, Volume}, sepc );
local Contributors; -- assembled contributors name list
+
else -- a sheet or stand-alone map
local Contribution = A['Contribution'];
+
tcommon = safe_join( {Title, TitleType, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher}, sepc );
if in_array(config.CitationClass, {"book","citation"}) and not is_set(A['Periodical']) then -- |contributor= and |contribution= only supported in book cites
+
end
c = extract_names (args, 'ContributorList'); -- fetch contributor list from |contributorn= / |contributor-lastn=, -firstn=, -linkn=, -maskn=
 
 
 
if 0 < #c then
+
elseif 'episode' == config.CitationClass then -- special case for cite episode
if not is_set (Contribution) then -- |contributor= requires |contribution=
+
tcommon = safe_join( {Title, TitleNote, TitleType, Series, Transcript, Language, Edition, Publisher}, sepc );
table.insert( z.message_tail, { set_error( 'contributor_missing_required_param', 'contribution')}); -- add missing contribution error message
+
else -- all other CS1 templates
c = {}; -- blank the contributors' table; it is used as a flag later
+
tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language,  
end
+
Volume, Others, Edition, Publisher, Agency}, sepc );
if 0 == #a then -- |contributor= requires |author=
 
table.insert( z.message_tail, { set_error( 'contributor_missing_required_param', 'author')}); -- add missing author error message
 
c = {}; -- blank the contributors' table; it is used as a flag later
 
end
 
end
 
else -- if not a book cite
 
if select_one (args, cfg.aliases['ContributorList-Last'], 'redundant_parameters', 1 ) then -- are there contributor name list parameters?
 
table.insert( z.message_tail, { set_error( 'contributor_ignored')}); -- add contributor ignored error message
 
end
 
Contribution = nil; -- unset
 
 
end
 
end
 
+
if not is_valid_parameter_value (NameListFormat, 'name-list-format', cfg.keywords['name-list-format']) then -- only accepted value for this parameter is 'vanc'
+
if #ID_list > 0 then
NameListFormat = ''; -- anything else, set to empty string
+
ID_list = safe_join( { sepc .. " ", table.concat( ID_list, sepc .. " " ), ID }, sepc );
 +
else
 +
ID_list = ID;
 
end
 
end
 +
 +
local idcommon = safe_join( { ID_list, URL, Archived, AccessDate, Via, SubscriptionRequired, Lay, Quote }, sepc );
 +
local text;
 +
local pgtext = Position .. Sheet .. Sheets .. Page .. Pages .. At;
  
local Year = A['Year'];
+
if is_set(Date) then
local PublicationDate = A['PublicationDate'];
+
if is_set (Authors) or is_set (Editors) then -- date follows authors or editors when authors not set
local OrigYear = A['OrigYear'];
+
Date = " (" .. Date ..")" .. OrigYear .. sepc .. " "; -- in paranetheses
local Date = A['Date'];
+
else -- neither of authors and editors set
local LayDate = A['LayDate'];
+
if (string.sub(tcommon,-1,-1) == sepc) then -- if the last character of tcommon is sepc
------------------------------------------------- Get title data
+
Date = " " .. Date .. OrigYear; -- Date does not begin with sepc
local Title = A['Title'];
+
else
local ScriptTitle = A['ScriptTitle'];
+
Date = sepc .. " " .. Date .. OrigYear; -- Date begins with sepc
local BookTitle = A['BookTitle'];
+
end
local Conference = A['Conference'];
 
local TransTitle = A['TransTitle'];
 
local TitleNote = A['TitleNote'];
 
local TitleLink = A['TitleLink'];
 
if is_set (TitleLink) and false == link_param_ok (TitleLink) then
 
table.insert( z.message_tail, { set_error( 'bad_paramlink', A:ORIGIN('TitleLink'))}); -- url or wikilink in |title-link=;
 
 
end
 
end
 
+
end
local Chapter = A['Chapter'];
+
if is_set(Authors) then
local ScriptChapter = A['ScriptChapter'];
+
if is_set(Coauthors) then
local ChapterLink -- = A['ChapterLink']; -- deprecated as a parameter but still used internally by cite episode
+
if 'vanc' == NameListFormat then -- separate authors and coauthors with proper name-list-separator
local TransChapter = A['TransChapter'];
+
Authors = Authors .. ', ' .. Coauthors;
local TitleType = A['TitleType'];
+
else
local Degree = A['Degree'];
+
Authors = Authors .. '; ' .. Coauthors;
local Docket = A['Docket'];
+
end
local ArchiveFormat = A['ArchiveFormat'];
+
end
local ArchiveURL = A['ArchiveURL'];
+
if not is_set (Date) then -- when date is set it's in parentheses; no Authors termination
local URL = A['URL']
+
Authors = terminate_name_list (Authors, sepc); -- when no date, terminate with 0 or 1 sepc and a space
local URLorigin = A:ORIGIN('URL'); -- get name of parameter that holds URL
+
end
local ChapterURL = A['ChapterURL'];
+
if is_set(Editors) then
local ChapterURLorigin = A:ORIGIN('ChapterURL'); -- get name of parameter that holds ChapterURL
+
local in_text = " ";
local ConferenceFormat = A['ConferenceFormat'];
+
local post_text = "";
local ConferenceURL = A['ConferenceURL'];
+
if is_set(Chapter) and 0 == #c then
local ConferenceURLorigin = A:ORIGIN('ConferenceURL'); -- get name of parameter that holds ConferenceURL
+
in_text = in_text .. cfg.messages['in'] .. " "
local Periodical = A['Periodical'];
+
if (sepc ~= '.') then in_text = in_text:lower() end -- lowercase for cs2
local Periodical_origin = A:ORIGIN('Periodical'); -- get the name of the periodical parameter
+
else
 
+
if EditorCount <= 1 then
local Series = A['Series'];
+
post_text = ", " .. cfg.messages['editor'];
+
else
local Volume;
+
post_text = ", " .. cfg.messages['editors'];
local Issue;
+
end
local Page;
+
end
local Pages;
+
Editors = terminate_name_list (in_text .. Editors .. post_text, sepc); -- terminate with 0 or 1 sepc and a space
local At;
 
 
 
if in_array (config.CitationClass, cfg.templates_using_volume) and not ('conference' == config.CitationClass and not is_set (Periodical)) then
 
Volume = A['Volume'];
 
end
 
if in_array (config.CitationClass, cfg.templates_using_issue) and not (in_array (config.CitationClass, {'conference', 'map'}) and not is_set (Periodical))then
 
Issue = A['Issue'];
 
end
 
local Position = '';
 
if not in_array (config.CitationClass, cfg.templates_not_using_page) then
 
Page = A['Page'];
 
Pages = hyphen_to_dash( A['Pages'] );
 
At = A['At'];
 
end
 
 
 
local Edition = A['Edition'];
 
local PublicationPlace = A['PublicationPlace']
 
local Place = A['Place'];
 
 
local PublisherName = A['PublisherName'];
 
local RegistrationRequired = A['RegistrationRequired'];
 
if not is_valid_parameter_value (RegistrationRequired, 'registration', cfg.keywords ['yes_true_y']) then
 
RegistrationRequired=nil;
 
 
end
 
end
local SubscriptionRequired = A['SubscriptionRequired'];
+
if is_set (Contributors) then -- book cite and we're citing the intro, preface, etc
if not is_valid_parameter_value (SubscriptionRequired, 'subscription', cfg.keywords ['yes_true_y']) then
+
local by_text = sepc .. ' ' .. cfg.messages['by'] .. ' ';
SubscriptionRequired=nil;
+
if (sepc ~= '.') then by_text = by_text:lower() end -- lowercase for cs2
end
+
Authors = by_text .. Authors; -- author follows title so tweak it here
 
+
if is_set (Editors) then -- when Editors make sure that Authors gets terminated
local Via = A['Via'];
+
Authors = terminate_name_list (Authors, sepc); -- terminate with 0 or 1 sepc and a space
local AccessDate = A['AccessDate'];
+
end
local ArchiveDate = A['ArchiveDate'];
+
if not is_set (Date) then -- when date is set it's in parentheses; no Contributors termination
local Agency = A['Agency'];
+
Contributors = terminate_name_list (Contributors, sepc); -- terminate with 0 or 1 sepc and a space
local DeadURL = A['DeadURL']
+
end
if not is_valid_parameter_value (DeadURL, 'dead-url', cfg.keywords ['deadurl']) then -- set in config.defaults to 'yes'
+
text = safe_join( {Contributors, Date, Chapter, tcommon, Authors, Place, Editors, tcommon2, pgtext, idcommon }, sepc );
DeadURL = ''; -- anything else, set to empty string
+
else
 +
text = safe_join( {Authors, Date, Chapter, Place, Editors, tcommon, pgtext, idcommon }, sepc );
 
end
 
end
 
+
elseif is_set(Editors) then
local Language = A['Language'];
+
if is_set(Date) then
local Format = A['Format'];
+
if EditorCount <= 1 then
local ChapterFormat = A['ChapterFormat'];
+
Editors = Editors .. ", " .. cfg.messages['editor'];
local DoiBroken = A['DoiBroken'];
+
else
local ID = A['ID'];
+
Editors = Editors .. ", " .. cfg.messages['editors'];
local ASINTLD = A['ASINTLD'];
+
end
local IgnoreISBN = A['IgnoreISBN'];
+
else
if not is_valid_parameter_value (IgnoreISBN, 'ignore-isbn-error', cfg.keywords ['yes_true_y']) then
+
if EditorCount <= 1 then
IgnoreISBN = nil; -- anything else, set to empty string
+
Editors = Editors .. " (" .. cfg.messages['editor'] .. ")" .. sepc .. " "
end
+
else
local Embargo = A['Embargo'];
+
Editors = Editors .. " (" .. cfg.messages['editors'] .. ")" .. sepc .. " "
local Class = A['Class']; -- arxiv class identifier
+
end
 
 
local ID_list = extract_ids( args );
 
 
 
local Quote = A['Quote'];
 
 
 
local LayFormat = A['LayFormat'];
 
local LayURL = A['LayURL'];
 
local LaySource = A['LaySource'];
 
local Transcript = A['Transcript'];
 
local TranscriptFormat = A['TranscriptFormat'];
 
local TranscriptURL = A['TranscriptURL']
 
local TranscriptURLorigin = A:ORIGIN('TranscriptURL'); -- get name of parameter that holds TranscriptURL
 
 
 
local LastAuthorAmp = A['LastAuthorAmp'];
 
if not is_valid_parameter_value (LastAuthorAmp, 'last-author-amp', cfg.keywords ['yes_true_y']) then
 
LastAuthorAmp = nil; -- set to empty string
 
 
end
 
end
local no_tracking_cats = A['NoTracking'];
+
text = safe_join( {Editors, Date, Chapter, Place, tcommon, pgtext, idcommon}, sepc );
if not is_valid_parameter_value (no_tracking_cats, 'no-tracking', cfg.keywords ['yes_true_y']) then
+
else
no_tracking_cats = nil; -- set to empty string
+
if config.CitationClass=="journal" and is_set(Periodical) then
 +
text = safe_join( {Chapter, Place, tcommon, pgtext, Date, idcommon}, sepc );
 +
else
 +
text = safe_join( {Chapter, Place, tcommon, Date, pgtext, idcommon}, sepc );
 
end
 
end
 +
end
 +
 +
if is_set(PostScript) and PostScript ~= sepc then
 +
text = safe_join( {text, sepc}, sepc );  --Deals with italics, spaces, etc.
 +
text = text:sub(1,-sepc:len()-1);
 +
end
 +
 +
text = safe_join( {text, PostScript}, sepc );
  
--these are used by cite interview
+
-- Now enclose the whole thing in a <cite/> element
local Callsign = A['Callsign'];
+
local options = {};
local City = A['City'];
+
local Program = A['Program'];
+
if is_set(config.CitationClass) and config.CitationClass ~= "citation" then
 
+
options.class = config.CitationClass;
--local variables that are not cs1 parameters
+
options.class = "citation " .. config.CitationClass; -- class=citation required for blue highlight when used with |ref=
local use_lowercase; -- controls capitalization of certain static text
+
else
local this_page = mw.title.getCurrentTitle(); -- also used for COinS and for language
+
options.class = "citation";
local anchor_year; -- used in the CITEREF identifier
 
local COinS_date = {}; -- holds date info extracted from |date= for the COinS metadata by Module:Date verification
 
 
 
-- set default parameter values defined by |mode= parameter.  If |mode= is empty or omitted, use CitationClass to set these values
 
local Mode = A['Mode'];
 
if not is_valid_parameter_value (Mode, 'mode', cfg.keywords['mode']) then
 
Mode = '';
 
 
end
 
end
local sepc; -- separator between citation elements for CS1 a period, for CS2, a comma
+
local PostScript;
+
if is_set(Ref) and Ref:lower() ~= "none" then -- set reference anchor if appropriate
local Ref;
+
local id = Ref
sepc, PostScript, Ref = set_style (Mode:lower(), A['PostScript'], A['Ref'], config.CitationClass);
+
if ('harv' == Ref ) then
use_lowercase = ( sepc == ',' ); -- used to control capitalization for certain static text
+
local namelist = {}; -- holds selected contributor, author, editor name list
 +
local year = first_set ({Year, anchor_year}, 2); -- Year first for legacy citations and for YMD dates that require disambiguation
  
--check this page to see if it is in one of the namespaces that cs1 is not supposed to add to the error categories
+
if #c > 0 then -- if there is a contributor list
if not is_set (no_tracking_cats) then -- ignore if we are already not going to categorize this page
+
namelist = c; -- select it
if in_array (this_page.nsText, cfg.uncategorized_namespaces) then
+
elseif #a > 0 then -- or an author list
no_tracking_cats = "true"; -- set no_tracking_cats
+
namelist = a;
end
+
elseif #e > 0 then -- or an editor list
for _,v in ipairs (cfg.uncategorized_subpages) do -- cycle through page name patterns
+
namelist = e;
if this_page.text:match (v) then -- test page name against each pattern
 
no_tracking_cats = "true"; -- set no_tracking_cats
 
break; -- bail out if one is found
 
 
end
 
end
 +
id = anchor_id (namelist, year); -- go make the CITEREF anchor
 
end
 
end
 +
options.id = id;
 
end
 
end
 
+
-- check for extra |page=, |pages= or |at= parameters. (also sheet and sheets while we're at it)
+
if string.len(text:gsub("<span[^>/]*>.-</span>", ""):gsub("%b<>","")) <= 2 then
select_one( args, {'page', 'p', 'pp', 'pages', 'at', 'sheet', 'sheets'}, 'redundant_parameters' ); -- this is a dummy call simply to get the error message and category
+
z.error_categories = {};
 
+
text = set_error('empty_citation');
local NoPP = A['NoPP']
+
z.message_tail = {};
if is_set (NoPP) and is_valid_parameter_value (NoPP, 'nopp', cfg.keywords ['yes_true_y']) then
+
end
NoPP = true;
+
 +
if is_set(options.id) then
 +
text = '<cite id="' .. mw.uri.anchorEncode(options.id) ..'" class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</cite>";
 
else
 
else
NoPP = nil; -- unset, used as a flag later
+
text = '<cite class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</cite>";
end
+
end
  
if is_set(Page) then
+
local empty_span = '<span style="display:none;">&nbsp;</span>';
if is_set(Pages) or is_set(At) then
+
Pages = ''; -- unset the others
+
-- Note: Using display: none on the COinS span breaks some clients.
At = '';
+
local OCinS = '<span title="' .. OCinSoutput .. '" class="Z3988">' .. empty_span .. '</span>';
 +
text = text .. OCinS;
 +
 +
if #z.message_tail ~= 0 then
 +
text = text .. " ";
 +
for i,v in ipairs( z.message_tail ) do
 +
if is_set(v[1]) then
 +
if i == #z.message_tail then
 +
text = text .. error_comment( v[1], v[2] );
 +
else
 +
text = text .. error_comment( v[1] .. "; ", v[2] );
 +
end
 +
end
 
end
 
end
extra_text_in_page_check (Page); -- add this page to maint cat if |page= value begins with what looks like p. or pp.
+
end
elseif is_set(Pages) then
+
 
if is_set(At) then
+
if #z.maintenance_cats ~= 0 then
At = ''; -- unset
+
text = text .. '<span class="citation-comment" style="display:none; color:#33aa33">';
 +
for _, v in ipairs( z.maintenance_cats ) do -- append maintenance categories
 +
text = text .. ' ' .. v .. ' ([[:Category:' .. v ..'|link]])';
 
end
 
end
extra_text_in_page_check (Pages); -- add this page to maint cat if |pages= value begins with what looks like p. or pp.
+
text = text .. '</span>'; -- maintenance mesages (realy just the names of the categories for now)
end
 
 
 
-- both |publication-place= and |place= (|location=) allowed if different
 
if not is_set(PublicationPlace) and is_set(Place) then
 
PublicationPlace = Place; -- promote |place= (|location=) to |publication-place
 
 
end
 
end
 
 
if PublicationPlace == Place then Place = ''; end -- don't need both if they are the same
+
no_tracking_cats = no_tracking_cats:lower();
 +
if in_array(no_tracking_cats, {"", "no", "false", "n"}) then
 +
for _, v in ipairs( z.error_categories ) do
 +
text = text .. '[[Category:' .. v ..']]';
 +
end
 +
for _, v in ipairs( z.maintenance_cats ) do -- append maintenance categories
 +
text = text .. '[[Category:' .. v ..']]';
 +
end
 +
for _, v in ipairs( z.properties_cats ) do -- append maintenance categories
 +
text = text .. '[[Category:' .. v ..']]';
 +
end
 +
end
 
 
--[[
+
return text
Parameter remapping for cite encyclopedia:
+
end
When the citation has these parameters:
 
|encyclopedia and |title then map |title to |article and |encyclopedia to |title
 
|encyclopedia and |article then map |encyclopedia to |title
 
|encyclopedia then map |encyclopedia to |title
 
  
|trans_title maps to |trans_chapter when |title is re-mapped
+
--[[--------------------------< C S 1 . C I T A T I O N >------------------------------------------------------
|url maps to |chapterurl when |title is remapped
 
  
All other combinations of |encyclopedia, |title, and |article are not modified
+
This is used by templates such as {{cite book}} to create the actual citation text.
  
 
]]
 
]]
  
local Encyclopedia = A['Encyclopedia'];
+
function cs1.citation(frame)
 +
local pframe = frame:getParent()
 +
local validation, utilities, identifiers, metadata;
 +
 +
if nil ~= string.find (frame:getTitle(), 'sandbox', 1, true) then -- did the {{#invoke:}} use sandbox version?
 +
cfg = mw.loadData ('Module:Citation/CS1/Configuration/sandbox'); -- load sandbox versions of support modules
 +
whitelist = mw.loadData ('Module:Citation/CS1/Whitelist/sandbox');
 +
utilities = require ('Module:Citation/CS1/Utilities/sandbox');
 +
validation = require ('Module:Citation/CS1/Date_validation/sandbox');
 +
identifiers = require ('Module:Citation/CS1/Identifiers/sandbox');
 +
metadata = require ('Module:Citation/CS1/COinS/sandbox');
 +
 +
else -- otherwise
 +
cfg = mw.loadData ('Module:Citation/CS1/Configuration'); -- load live versions of support modules
 +
whitelist = mw.loadData ('Module:Citation/CS1/Whitelist');
 +
utilities = require ('Module:Citation/CS1/Utilities');
 +
validation = require ('Module:Citation/CS1/Date_validation');
 +
identifiers = require ('Module:Citation/CS1/Identifiers');
 +
metadata = require ('Module:Citation/CS1/COinS');
 +
end
 +
 
 +
utilities.set_selected_modules (cfg); -- so that functions in Utilities can see the cfg tables
 +
identifiers.set_selected_modules (cfg, utilities); -- so that functions in Identifiers can see the selected cfg tables and selected Utilities module
 +
validation.set_selected_modules (utilities); -- so that functions in Date validataion can see the selected Utilities module
 +
metadata.set_selected_modules (cfg, utilities); -- so that functions in COinS can see the selected cfg tables and selected Utilities module
  
if ( config.CitationClass == "encyclopaedia" ) or ( config.CitationClass == "citation" and is_set (Encyclopedia)) then -- test code for citation
+
dates = validation.dates; -- imported functions from Module:Citation/CS1/Date validation
if is_set(Periodical) then -- Periodical is set when |encyclopedia is set
+
year_date_check = validation.year_date_check;
if is_set(Title) or is_set (ScriptTitle) then
+
reformat_dates = validation.reformat_dates;
if not is_set(Chapter) then
 
Chapter = Title; -- |encyclopedia and |title are set so map |title to |article and |encyclopedia to |title
 
ScriptChapter = ScriptTitle;
 
TransChapter = TransTitle;
 
ChapterURL = URL;
 
if not is_set (ChapterURL) and is_set (TitleLink) then
 
Chapter= '[[' .. TitleLink .. '|' .. Chapter .. ']]';
 
end
 
Title = Periodical;
 
ChapterFormat = Format;
 
Periodical = ''; -- redundant so unset
 
TransTitle = '';
 
URL = '';
 
Format = '';
 
TitleLink = '';
 
ScriptTitle = '';
 
end
 
else -- |title not set
 
Title = Periodical; -- |encyclopedia set and |article set or not set so map |encyclopedia to |title
 
Periodical = ''; -- redundant so unset
 
end
 
end
 
end
 
 
 
-- Special case for cite techreport.
 
if (config.CitationClass == "techreport") then -- special case for cite techreport
 
if is_set(A['Number']) then -- cite techreport uses 'number', which other citations alias to 'issue'
 
if not is_set(ID) then -- can we use ID for the "number"?
 
ID = A['Number']; -- yes, use it
 
else -- ID has a value so emit error message
 
table.insert( z.message_tail, { set_error('redundant_parameters', {wrap_style ('parameter', 'id') .. ' and ' .. wrap_style ('parameter', 'number')}, true )});
 
end
 
end
 
end
 
 
 
-- special case for cite interview
 
if (config.CitationClass == "interview") then
 
if is_set(Program) then
 
ID = ' ' .. Program;
 
end
 
if is_set(Callsign) then
 
if is_set(ID) then
 
ID = ID .. sepc .. ' ' .. Callsign;
 
else
 
ID = ' ' .. Callsign;
 
end
 
end
 
if is_set(City) then
 
if is_set(ID) then
 
ID = ID .. sepc .. ' ' .. City;
 
else
 
ID = ' ' .. City;
 
end
 
end
 
 
 
if is_set(Others) then
 
if is_set(TitleType) then
 
Others = ' ' .. TitleType .. ' with ' .. Others;
 
TitleType = '';
 
else
 
Others = ' ' .. 'Interview with ' .. Others;
 
end
 
else
 
Others = '(Interview)';
 
end
 
end
 
 
 
-- special case for cite mailing list
 
if (config.CitationClass == "mailinglist") then
 
Periodical = A ['MailingList'];
 
elseif 'mailinglist' == A:ORIGIN('Periodical') then
 
Periodical = ''; -- unset because mailing list is only used for cite mailing list
 
end
 
 
 
-- Account for the oddity that is {{cite conference}}, before generation of COinS data.
 
if 'conference' == config.CitationClass then
 
if is_set(BookTitle) then
 
Chapter = Title;
 
-- ChapterLink = TitleLink; -- |chapterlink= is deprecated
 
ChapterURL = URL;
 
ChapterURLorigin = URLorigin;
 
URLorigin = '';
 
ChapterFormat = Format;
 
TransChapter = TransTitle;
 
Title = BookTitle;
 
Format = '';
 
-- TitleLink = '';
 
TransTitle = '';
 
URL = '';
 
end
 
elseif 'speech' ~= config.CitationClass then
 
Conference = ''; -- not cite conference or cite speech so make sure this is empty string
 
end
 
 
 
-- cite map oddities
 
local Cartography = "";
 
local Scale = "";
 
local Sheet = A['Sheet'] or '';
 
local Sheets = A['Sheets'] or '';
 
if config.CitationClass == "map" then
 
Chapter = A['Map'];
 
ChapterURL = A['MapURL'];
 
TransChapter = A['TransMap'];
 
ChapterURLorigin = A:ORIGIN('MapURL');
 
ChapterFormat = A['MapFormat'];
 
 
Cartography = A['Cartography'];
 
if is_set( Cartography ) then
 
Cartography = sepc .. " " .. wrap_msg ('cartography', Cartography, use_lowercase);
 
end
 
Scale = A['Scale'];
 
if is_set( Scale ) then
 
Scale = sepc .. " " .. Scale;
 
end
 
end
 
 
 
-- Account for the oddities that are {{cite episode}} and {{cite serial}}, before generation of COinS data.
 
if 'episode' == config.CitationClass or 'serial' == config.CitationClass then
 
local AirDate = A['AirDate'];
 
local SeriesLink = A['SeriesLink'];
 
if is_set (SeriesLink) and false == link_param_ok (SeriesLink) then
 
table.insert( z.message_tail, { set_error( 'bad_paramlink', A:ORIGIN('SeriesLink'))});
 
end
 
local Network = A['Network'];
 
local Station = A['Station'];
 
local s, n = {}, {};
 
-- do common parameters first
 
if is_set(Network) then table.insert(n, Network); end
 
if is_set(Station) then table.insert(n, Station); end
 
ID = table.concat(n, sepc .. ' ');
 
 
if not is_set (Date) and is_set (AirDate) then -- promote airdate to date
 
Date = AirDate;
 
end
 
 
 
if 'episode' == config.CitationClass then -- handle the oddities that are strictly {{cite episode}}
 
local Season = A['Season'];
 
local SeriesNumber = A['SeriesNumber'];
 
 
 
if is_set (Season) and is_set (SeriesNumber) then -- these are mutually exclusive so if both are set
 
table.insert( z.message_tail, { set_error( 'redundant_parameters', {wrap_style ('parameter', 'season') .. ' and ' .. wrap_style ('parameter', 'seriesno')}, true ) } ); -- add error message
 
SeriesNumber = ''; -- unset; prefer |season= over |seriesno=
 
end
 
-- assemble a table of parts concatenated later into Series
 
if is_set(Season) then table.insert(s, wrap_msg ('season', Season, use_lowercase)); end
 
if is_set(SeriesNumber) then table.insert(s, wrap_msg ('series', SeriesNumber, use_lowercase)); end
 
if is_set(Issue) then table.insert(s, wrap_msg ('episode', Issue, use_lowercase)); end
 
Issue = ''; -- unset because this is not a unique parameter
 
 
Chapter = Title; -- promote title parameters to chapter
 
ScriptChapter = ScriptTitle;
 
ChapterLink = TitleLink; -- alias episodelink
 
TransChapter = TransTitle;
 
ChapterURL = URL;
 
ChapterURLorigin = A:ORIGIN('URL');
 
 
Title = Series; -- promote series to title
 
TitleLink = SeriesLink;
 
Series = table.concat(s, sepc .. ' '); -- this is concatenation of season, seriesno, episode number
 
 
 
if is_set (ChapterLink) and not is_set (ChapterURL) then -- link but not URL
 
Chapter = '[[' .. ChapterLink .. '|' .. Chapter .. ']]'; -- ok to wikilink
 
elseif is_set (ChapterLink) and is_set (ChapterURL) then -- if both are set, URL links episode;
 
Series = '[[' .. ChapterLink .. '|' .. Series .. ']]'; -- series links with ChapterLink (episodelink -> TitleLink -> ChapterLink) ugly
 
end
 
URL = ''; -- unset
 
TransTitle = '';
 
ScriptTitle = '';
 
 
else -- now oddities that are cite serial
 
Issue = ''; -- unset because this parameter no longer supported by the citation/core version of cite serial
 
Chapter = A['Episode']; -- TODO: make |episode= available to cite episode someday?
 
if is_set (Series) and is_set (SeriesLink) then
 
Series = '[[' .. SeriesLink .. '|' .. Series .. ']]';
 
end
 
Series = wrap_style ('italic-title', Series); -- series is italicized
 
end
 
end
 
-- end of {{cite episode}} stuff
 
 
 
-- Account for the oddities that are {{cite arxiv}}, before generation of COinS data.
 
if 'arxiv' == config.CitationClass then
 
if not is_set (ID_list['ARXIV']) then -- |arxiv= or |eprint= required for cite arxiv
 
table.insert( z.message_tail, { set_error( 'arxiv_missing', {}, true ) } ); -- add error message
 
elseif is_set (Series) then -- series is an alias of version
 
ID_list['ARXIV'] = ID_list['ARXIV'] .. Series; -- concatenate version onto the end of the arxiv identifier
 
Series = ''; -- unset
 
deprecated_parameter ('version'); -- deprecated parameter but only for cite arxiv
 
end
 
 
if first_set ({AccessDate, At, Chapter, Format, Page, Pages, Periodical, PublisherName, URL, -- a crude list of parameters that are not supported by cite arxiv
 
ID_list['ASIN'], ID_list['BIBCODE'], ID_list['DOI'], ID_list['ISBN'], ID_list['ISSN'],
 
ID_list['JFM'], ID_list['JSTOR'], ID_list['LCCN'], ID_list['MR'], ID_list['OCLC'], ID_list['OL'],
 
ID_list['OSTI'], ID_list['PMC'], ID_list['PMID'], ID_list['RFC'], ID_list['SSRN'], ID_list['USENETID'], ID_list['ZBL']},27) then
 
table.insert( z.message_tail, { set_error( 'arxiv_params_not_supported', {}, true ) } ); -- add error message
 
 
 
AccessDate= ''; -- set these to empty string; not supported in cite arXiv
 
PublisherName = ''; -- (if the article has been published, use cite journal, or other)
 
Chapter = '';
 
URL = '';
 
Format = '';
 
Page = ''; Pages = ''; At = '';
 
end
 
Periodical = 'arXiv'; -- set to arXiv for COinS; after that, must be set to empty string
 
end
 
 
 
-- handle type parameter for those CS1 citations that have default values
 
if in_array(config.CitationClass, {"AV-media-notes", "DVD-notes", "mailinglist", "map", "podcast", "pressrelease", "report", "techreport", "thesis"}) then
 
TitleType = set_titletype (config.CitationClass, TitleType);
 
if is_set(Degree) and "Thesis" == TitleType then -- special case for cite thesis
 
TitleType = Degree .. " thesis";
 
end
 
end
 
 
 
if is_set(TitleType) then -- if type parameter is specified
 
TitleType = substitute( cfg.messages['type'], TitleType); -- display it in parentheses
 
end
 
 
 
-- legacy: promote concatenation of |month=, and |year= to Date if Date not set; or, promote PublicationDate to Date if neither Date nor Year are set.
 
if not is_set (Date) then
 
Date = Year; -- promote Year to Date
 
Year = nil; -- make nil so Year as empty string isn't used for CITEREF
 
if not is_set (Date) and is_set(PublicationDate) then -- use PublicationDate when |date= and |year= are not set
 
Date = PublicationDate; -- promote PublicationDate to Date
 
PublicationDate = ''; -- unset, no longer needed
 
end
 
end
 
 
 
if PublicationDate == Date then PublicationDate = ''; end -- if PublicationDate is same as Date, don't display in rendered citation
 
 
 
--[[
 
Go test all of the date-holding parameters for valid MOS:DATE format and make sure that dates are real dates. This must be done before we do COinS because here is where
 
we get the date used in the metadata.
 
 
 
Date validation supporting code is in Module:Citation/CS1/Date_validation
 
]]
 
do -- create defined block to contain local variables error_message and mismatch
 
local error_message = '';
 
-- AirDate has been promoted to Date so not necessary to check it
 
anchor_year, error_message = dates({['access-date']=AccessDate, ['archive-date']=ArchiveDate, ['date']=Date, ['doi-broken-date']=DoiBroken,
 
['embargo']=Embargo, ['lay-date']=LayDate, ['publication-date']=PublicationDate, ['year']=Year}, COinS_date);
 
 
 
if is_set (Year) and is_set (Date) then -- both |date= and |year= not normally needed;
 
local mismatch = year_date_check (Year, Date)
 
if 0 == mismatch then -- |year= does not match a year-value in |date=
 
if is_set (error_message) then -- if there is already an error message
 
error_message = error_message .. ', '; -- tack on this additional message
 
end
 
error_message = error_message .. '&#124;year= / &#124;date= mismatch';
 
elseif 1 == mismatch then -- |year= matches year-value in |date=
 
add_maint_cat ('date_year');
 
end
 
end
 
 
 
if is_set(error_message) then
 
table.insert( z.message_tail, { set_error( 'bad_date', {error_message}, true ) } ); -- add this error message
 
end
 
end -- end of do
 
 
 
-- Account for the oddity that is {{cite journal}} with |pmc= set and |url= not set.  Do this after date check but before COInS.
 
-- Here we unset Embargo if PMC not embargoed (|embargo= not set in the citation) or if the embargo time has expired. Otherwise, holds embargo date
 
Embargo = is_embargoed (Embargo); --
 
 
 
if config.CitationClass == "journal" and not is_set(URL) and is_set(ID_list['PMC']) then
 
if not is_set (Embargo) then -- if not embargoed or embargo has expired
 
URL=cfg.id_handlers['PMC'].prefix .. ID_list['PMC']; -- set url to be the same as the PMC external link if not embargoed
 
URLorigin = cfg.id_handlers['PMC'].parameters[1]; -- set URLorigin to parameter name for use in error message if citation is missing a |title=
 
end
 
end
 
 
 
-- At this point fields may be nil if they weren't specified in the template use.  We can use that fact.
 
-- Test if citation has no title
 
if not is_set(Title) and
 
not is_set(TransTitle) and
 
not is_set(ScriptTitle) then
 
if 'episode' == config.CitationClass then -- special case for cite episode; TODO: is there a better way to do this?
 
table.insert( z.message_tail, { set_error( 'citation_missing_title', {'series'}, true ) } );
 
else
 
table.insert( z.message_tail, { set_error( 'citation_missing_title', {'title'}, true ) } );
 
end
 
end
 
 
if 'none' == Title and in_array (config.CitationClass, {'journal', 'citation'}) and is_set (Periodical) and 'journal' == A:ORIGIN('Periodical') then -- special case for journal cites
 
Title = ''; -- set title to empty string
 
add_maint_cat ('untitled');
 
end
 
 
 
check_for_url ({ -- add error message when any of these parameters contains a URL
 
['title']=Title,
 
[A:ORIGIN('Chapter')]=Chapter,
 
[A:ORIGIN('Periodical')]=Periodical,
 
[A:ORIGIN('PublisherName')] = PublisherName,
 
});
 
 
 
-- COinS metadata (see <http://ocoins.info/>) for automated parsing of citation information.
 
-- handle the oddity that is cite encyclopedia and {{citation |encyclopedia=something}}. Here we presume that
 
-- when Periodical, Title, and Chapter are all set, then Periodical is the book (encyclopedia) title, Title
 
-- is the article title, and Chapter is a section within the article.  So, we remap
 
 
local coins_chapter = Chapter; -- default assuming that remapping not required
 
local coins_title = Title; -- et tu
 
if 'encyclopaedia' == config.CitationClass or ('citation' == config.CitationClass and is_set (Encyclopedia)) then
 
if is_set (Chapter) and is_set (Title) and is_set (Periodical) then -- if all are used then
 
coins_chapter = Title; -- remap
 
coins_title = Periodical;
 
end
 
end
 
local coins_author = a; -- default for coins rft.au
 
if 0 < #c then -- but if contributor list
 
coins_author = c; -- use that instead
 
end
 
 
 
-- this is the function call to COinS()
 
local OCinSoutput = COinS({
 
['Periodical'] = Periodical,
 
['Encyclopedia'] = Encyclopedia,
 
['Chapter'] = make_coins_title (coins_chapter, ScriptChapter), -- Chapter and ScriptChapter stripped of bold / italic wikimarkup
 
['Map'] = Map,
 
['Degree'] = Degree; -- cite thesis only
 
['Title'] = make_coins_title (coins_title, ScriptTitle), -- Title and ScriptTitle stripped of bold / italic wikimarkup
 
['PublicationPlace'] = PublicationPlace,
 
['Date'] = COinS_date.rftdate, -- COinS_date has correctly formatted date if Date is valid;
 
['Season'] = COinS_date.rftssn,
 
['Chron'] =  COinS_date.rftchron or (not COinS_date.rftdate and Date) or '', -- chron but if not set and invalid date format use Date; keep this last bit?
 
['Series'] = Series,
 
['Volume'] = Volume,
 
['Issue'] = Issue,
 
['Pages'] = get_coins_pages (first_set ({Sheet, Sheets, Page, Pages, At}, 5)), -- pages stripped of external links
 
['Edition'] = Edition,
 
['PublisherName'] = PublisherName,
 
['URL'] = first_set ({ChapterURL, URL}, 2),
 
['Authors'] = coins_author,
 
['ID_list'] = ID_list,
 
['RawPage'] = this_page.prefixedText,
 
}, config.CitationClass);
 
 
 
-- Account for the oddities that are {{cite arxiv}}, AFTER generation of COinS data.
 
if 'arxiv' == config.CitationClass then -- we have set rft.jtitle in COinS to arXiv, now unset so it isn't displayed
 
Periodical = ''; -- periodical not allowed in cite arxiv; if article has been published, use cite journal
 
end
 
 
 
-- special case for cite newsgroup.  Do this after COinS because we are modifying Publishername to include some static text
 
if 'newsgroup' == config.CitationClass then
 
if is_set (PublisherName) then
 
PublisherName = substitute (cfg.messages['newsgroup'], external_link( 'news:' .. PublisherName, PublisherName, A:ORIGIN('PublisherName') ));
 
end
 
end
 
 
 
 
 
 
 
-- Now perform various field substitutions.
 
-- We also add leading spaces and surrounding markup and punctuation to the
 
-- various parts of the citation, but only when they are non-nil.
 
local EditorCount; -- used only for choosing {ed.) or (eds.) annotation at end of editor name-list
 
do
 
local last_first_list;
 
local maximum;
 
local control = {
 
format = NameListFormat, -- empty string or 'vanc'
 
maximum = nil, -- as if display-authors or display-editors not set
 
lastauthoramp = LastAuthorAmp,
 
page_name = this_page.text -- get current page name so that we don't wikilink to it via editorlinkn
 
};
 
 
 
do -- do editor name list first because coauthors can modify control table
 
maximum , editor_etal = get_display_authors_editors (A['DisplayEditors'], #e, 'editors', editor_etal);
 
-- Preserve old-style implicit et al.
 
if not is_set(maximum) and #e == 4 then
 
maximum = 3;
 
table.insert( z.message_tail, { set_error('implict_etal_editor', {}, true) } );
 
end
 
 
 
control.maximum = maximum;
 
 
last_first_list, EditorCount = list_people(control, e, editor_etal, 'editor');
 
 
 
if is_set (Editors) then
 
if editor_etal then
 
Editors = Editors .. ' ' .. cfg.messages['et al']; -- add et al. to editors parameter beause |display-editors=etal
 
EditorCount = 2; -- with et al., |editors= is multiple names; spoof to display (eds.) annotation
 
else
 
EditorCount = 2; -- we don't know but assume |editors= is multiple names; spoof to display (eds.) annotation
 
end
 
else
 
Editors = last_first_list; -- either an author name list or an empty string
 
end
 
 
 
if 1 == EditorCount and (true == editor_etal or 1 < #e) then -- only one editor displayed but includes etal then
 
EditorCount = 2; -- spoof to display (eds.) annotation
 
end
 
end
 
do -- now do translators
 
control.maximum = #t; -- number of translators
 
Translators = list_people(control, t, false, 'translator'); -- et al not currently supported
 
end
 
do -- now do contributors
 
control.maximum = #c; -- number of contributors
 
Contributors = list_people(control, c, false, 'contributor'); -- et al not currently supported
 
end
 
do -- now do authors
 
control.maximum , author_etal = get_display_authors_editors (A['DisplayAuthors'], #a, 'authors', author_etal);
 
 
 
if is_set(Coauthors) then -- if the coauthor field is also used, prevent ampersand and et al. formatting.
 
control.lastauthoramp = nil;
 
control.maximum = #a + 1;
 
end
 
 
last_first_list = list_people(control, a, author_etal, 'author');
 
 
 
if is_set (Authors) then
 
Authors, author_etal = name_has_etal (Authors, author_etal, false); -- find and remove variations on et al.
 
if author_etal then
 
Authors = Authors .. ' ' .. cfg.messages['et al']; -- add et al. to authors parameter
 
end
 
else
 
Authors = last_first_list; -- either an author name list or an empty string
 
end
 
end -- end of do
 
 
 
if not is_set(Authors) and is_set(Coauthors) then -- coauthors aren't displayed if one of authors=, authorn=, or lastn= isn't specified
 
table.insert( z.message_tail, { set_error('coauthors_missing_author', {}, true) } ); -- emit error message
 
end
 
end
 
 
 
-- apply |[xx-]format= styling; at the end, these parameters hold correctly styled format annotation,
 
-- an error message if the associated url is not set, or an empty string for concatenation
 
ArchiveFormat = style_format (ArchiveFormat, ArchiveURL, 'archive-format', 'archive-url');
 
ConferenceFormat = style_format (ConferenceFormat, ConferenceURL, 'conference-format', 'conference-url');
 
Format = style_format (Format, URL, 'format', 'url');
 
LayFormat = style_format (LayFormat, LayURL, 'lay-format', 'lay-url');
 
TranscriptFormat = style_format (TranscriptFormat, TranscriptURL, 'transcript-format', 'transcripturl');
 
 
 
-- special case for chapter format so no error message or cat when chapter not supported
 
if not (in_array(config.CitationClass, {'web','news','journal', 'magazine', 'pressrelease','podcast', 'newsgroup', 'arxiv'}) or
 
('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia))) then
 
ChapterFormat = style_format (ChapterFormat, ChapterURL, 'chapter-format', 'chapter-url');
 
end
 
 
 
if  not is_set(URL) then --and
 
if in_array(config.CitationClass, {"web","podcast", "mailinglist"}) then -- Test if cite web or cite podcast |url= is missing or empty
 
table.insert( z.message_tail, { set_error( 'cite_web_url', {}, true ) } );
 
end
 
 
-- Test if accessdate is given without giving a URL
 
if is_set(AccessDate) and not is_set(ChapterURL)then -- ChapterURL may be set when the others are not set; TODO: move this to a separate test?
 
table.insert( z.message_tail, { set_error( 'accessdate_missing_url', {}, true ) } );
 
AccessDate = '';
 
end
 
end
 
 
 
local OriginalURL, OriginalURLorigin, OriginalFormat; -- TODO: swap chapter and title here so that archive applies to most specific if both are set?
 
DeadURL = DeadURL:lower(); -- used later when assembling archived text
 
if is_set( ArchiveURL ) then
 
if is_set (URL) then
 
OriginalURL = URL; -- save copy of original source URL
 
OriginalURLorigin = URLorigin; -- name of url parameter for error messages
 
OriginalFormat = Format; -- and original |format=
 
if 'no' ~= DeadURL then -- if URL set then archive-url applies to it
 
URL = ArchiveURL -- swap-in the archive's url
 
URLorigin = A:ORIGIN('ArchiveURL') -- name of archive url parameter for error messages
 
Format = ArchiveFormat or ''; -- swap in archive's format
 
end
 
elseif is_set (ChapterURL) then -- URL not set so if chapter-url is set apply archive url to it
 
OriginalURL = ChapterURL; -- save copy of source chapter's url for archive text
 
OriginalURLorigin = ChapterURLorigin; -- name of chapter-url parameter for error messages
 
OriginalFormat = ChapterFormat; -- and original |format=
 
if 'no' ~= DeadURL then
 
ChapterURL = ArchiveURL -- swap-in the archive's url
 
ChapterURLorigin = A:ORIGIN('ArchiveURL') -- name of archive-url parameter for error messages
 
ChapterFormat = ArchiveFormat or ''; -- swap in archive's format
 
end
 
end
 
end
 
 
 
if in_array(config.CitationClass, {'web','news','journal', 'magazine', 'pressrelease','podcast', 'newsgroup', 'arxiv'}) or -- if any of the 'periodical' cites except encyclopedia
 
('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) then
 
local chap_param;
 
if is_set (Chapter) then -- get a parameter name from one of these chapter related meta-parameters
 
chap_param = A:ORIGIN ('Chapter')
 
elseif is_set (TransChapter) then
 
chap_param = A:ORIGIN ('TransChapter')
 
elseif is_set (ChapterURL) then
 
chap_param = A:ORIGIN ('ChapterURL')
 
elseif is_set (ScriptChapter) then
 
chap_param = A:ORIGIN ('ScriptChapter')
 
else is_set (ChapterFormat)
 
chap_param = A:ORIGIN ('ChapterFormat')
 
end
 
 
 
if is_set (chap_param) then -- if we found one
 
table.insert( z.message_tail, { set_error( 'chapter_ignored', {chap_param}, true ) } ); -- add error message
 
Chapter = ''; -- and set them to empty string to be safe with concatenation
 
TransChapter = '';
 
ChapterURL = '';
 
ScriptChapter = '';
 
ChapterFormat = '';
 
end
 
else -- otherwise, format chapter / article title
 
local no_quotes = false; -- default assume that we will be quoting the chapter parameter value
 
if is_set (Contribution) and 0 < #c then -- if this is a contribution with contributor(s)
 
if in_array (Contribution:lower(), cfg.keywords.contribution) then -- and a generic contribution title
 
no_quotes = true; -- then render it unquoted
 
end
 
end
 
 
 
Chapter = format_chapter_title (ScriptChapter, Chapter, TransChapter, ChapterURL, ChapterURLorigin, no_quotes); -- Contribution is also in Chapter
 
if is_set (Chapter) then
 
if 'map' == config.CitationClass and is_set (TitleType) then
 
Chapter = Chapter .. ' ' .. TitleType;
 
end
 
Chapter = Chapter .. ChapterFormat .. sepc .. ' ';
 
elseif is_set (ChapterFormat) then -- |chapter= not set but |chapter-format= is so ...
 
Chapter = ChapterFormat .. sepc .. ' '; -- ... ChapterFormat has error message, we want to see it
 
end
 
end
 
 
 
-- Format main title.
 
if is_set(TitleLink) and is_set(Title) then
 
Title = "[[" .. TitleLink .. "|" .. Title .. "]]"
 
end
 
 
 
if in_array(config.CitationClass, {'web','news','journal', 'magazine', 'pressrelease','podcast', 'newsgroup', 'mailinglist', 'arxiv'}) or
 
('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) or
 
('map' == config.CitationClass and is_set (Periodical)) then -- special case for cite map when the map is in a periodical treat as an article
 
Title = kern_quotes (Title); -- if necessary, separate title's leading and trailing quote marks from Module provided quote marks
 
Title = wrap_style ('quoted-title', Title);
 
 
Title = script_concatenate (Title, ScriptTitle); -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
 
TransTitle= wrap_style ('trans-quoted-title', TransTitle );
 
elseif 'report' == config.CitationClass then -- no styling for cite report
 
Title = script_concatenate (Title, ScriptTitle); -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
 
TransTitle= wrap_style ('trans-quoted-title', TransTitle ); -- for cite report, use this form for trans-title
 
else
 
Title = wrap_style ('italic-title', Title);
 
Title = script_concatenate (Title, ScriptTitle); -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
 
TransTitle = wrap_style ('trans-italic-title', TransTitle);
 
end
 
 
 
TransError = "";
 
if is_set(TransTitle) then
 
if is_set(Title) then
 
TransTitle = " " .. TransTitle;
 
else
 
TransError = " " .. set_error( 'trans_missing_title', {'title'} );
 
end
 
end
 
 
Title = Title .. TransTitle;
 
 
if is_set(Title) then
 
if not is_set(TitleLink) and is_set(URL) then
 
Title = external_link( URL, Title, URLorigin ) .. TransError .. Format;
 
URL = "";
 
Format = "";
 
else
 
Title = Title .. TransError;
 
end
 
end
 
 
 
if is_set(Place) then
 
Place = " " .. wrap_msg ('written', Place, use_lowercase) .. sepc .. " ";
 
end
 
 
 
if is_set (Conference) then
 
if is_set (ConferenceURL) then
 
Conference = external_link( ConferenceURL, Conference, ConferenceURLorigin );
 
end
 
Conference = sepc .. " " .. Conference .. ConferenceFormat;
 
elseif is_set(ConferenceURL) then
 
Conference = sepc .. " " .. external_link( ConferenceURL, nil, ConferenceURLorigin );
 
end
 
 
 
if not is_set(Position) then
 
local Minutes = A['Minutes'];
 
local Time = A['Time'];
 
 
 
if is_set(Minutes) then
 
if is_set (Time) then
 
table.insert( z.message_tail, { set_error( 'redundant_parameters', {wrap_style ('parameter', 'minutes') .. ' and ' .. wrap_style ('parameter', 'time')}, true ) } );
 
end
 
Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
 
else
 
if is_set(Time) then
 
local TimeCaption = A['TimeCaption']
 
if not is_set(TimeCaption) then
 
TimeCaption = cfg.messages['event'];
 
if sepc ~= '.' then
 
TimeCaption = TimeCaption:lower();
 
end
 
end
 
Position = " " .. TimeCaption .. " " .. Time;
 
end
 
end
 
else
 
Position = " " .. Position;
 
At = '';
 
end
 
 
 
Page, Pages, Sheet, Sheets = format_pages_sheets (Page, Pages, Sheet, Sheets, config.CitationClass, Periodical_origin, sepc, NoPP, use_lowercase);
 
 
 
At = is_set(At) and (sepc .. " " .. At) or "";
 
Position = is_set(Position) and (sepc .. " " .. Position) or "";
 
if config.CitationClass == 'map' then
 
local Section = A['Section'];
 
local Sections = A['Sections'];
 
local Inset = A['Inset'];
 
 
if is_set( Inset ) then
 
Inset = sepc .. " " .. wrap_msg ('inset', Inset, use_lowercase);
 
end
 
 
 
if is_set( Sections ) then
 
Section = sepc .. " " .. wrap_msg ('sections', Sections, use_lowercase);
 
elseif is_set( Section ) then
 
Section = sepc .. " " .. wrap_msg ('section', Section, use_lowercase);
 
end
 
At = At .. Inset .. Section;
 
end
 
 
 
if is_set (Language) then
 
Language = language_parameter (Language); -- format, categories, name from ISO639-1, etc
 
else
 
Language=""; -- language not specified so make sure this is an empty string;
 
end
 
 
 
Others = is_set(Others) and (sepc .. " " .. Others) or "";
 
 
if is_set (Translators) then
 
Others = sepc .. ' Translated by ' .. Translators .. Others;
 
end
 
 
 
TitleNote = is_set(TitleNote) and (sepc .. " " .. TitleNote) or "";
 
if is_set (Edition) then
 
if Edition:match ('%f[%a][Ee]d%.?$') or Edition:match ('%f[%a][Ee]dition$') then
 
add_maint_cat ('extra_text', 'edition');
 
end
 
Edition = " " .. wrap_msg ('edition', Edition);
 
else
 
Edition = '';
 
end
 
 
 
Series = is_set(Series) and (sepc .. " " .. Series) or "";
 
OrigYear = is_set(OrigYear) and (" [" .. OrigYear .. "]") or "";
 
Agency = is_set(Agency) and (sepc .. " " .. Agency) or "";
 
 
 
Volume = format_volume_issue (Volume, Issue, config.CitationClass, Periodical_origin, sepc, use_lowercase);
 
 
 
------------------------------------ totally unrelated data
 
if is_set(Via) then
 
Via = " " .. wrap_msg ('via', Via);
 
end
 
 
 
--[[
 
Subscription implies paywall; Registration does not.  If both are used in a citation, the subscription required link
 
note is displayed. There are no error messages for this condition.
 
 
 
]]
 
if is_set (SubscriptionRequired) then
 
SubscriptionRequired = sepc .. " " .. cfg.messages['subscription']; -- subscription required message
 
elseif is_set (RegistrationRequired) then
 
SubscriptionRequired = sepc .. " " .. cfg.messages['registration']; -- registration required message
 
else
 
SubscriptionRequired = ''; -- either or both might be set to something other than yes true y
 
end
 
 
 
if is_set(AccessDate) then
 
local retrv_text = " " .. cfg.messages['retrieved']
 
 
 
AccessDate = nowrap_date (AccessDate); -- wrap in nowrap span if date in appropriate format
 
if (sepc ~= ".") then retrv_text = retrv_text:lower() end -- if 'citation', lower case
 
AccessDate = substitute (retrv_text, AccessDate); -- add retrieved text
 
-- neither of these work; don't know why; it seems that substitute() isn't being called
 
AccessDate = substitute (cfg.presentation['accessdate'], {sepc, AccessDate}); -- allow editors to hide accessdates
 
end
 
 
if is_set(ID) then ID = sepc .." ".. ID; end
 
  if "thesis" == config.CitationClass and is_set(Docket) then
 
ID = sepc .." Docket ".. Docket .. ID;
 
end
 
  if "report" == config.CitationClass and is_set(Docket) then -- for cite report when |docket= is set
 
ID = sepc .. ' ' .. Docket; -- overwrite ID even if |id= is set
 
end
 
 
 
ID_list = build_id_list( ID_list, {DoiBroken = DoiBroken, ASINTLD = ASINTLD, IgnoreISBN = IgnoreISBN, Embargo=Embargo, Class = Class} );
 
 
 
if is_set(URL) then
 
URL = " " .. external_link( URL, nil, URLorigin );
 
end
 
 
 
if is_set(Quote) then
 
if Quote:sub(1,1) == '"' and Quote:sub(-1,-1) == '"' then -- if first and last characters of quote are quote marks
 
Quote = Quote:sub(2,-2); -- strip them off
 
end
 
Quote = sepc .." " .. wrap_style ('quoted-text', Quote ); -- wrap in <q>...</q> tags
 
PostScript = ""; -- cs1|2 does not supply terminal punctuation when |quote= is set
 
end
 
 
local Archived
 
if is_set(ArchiveURL) then
 
if not is_set(ArchiveDate) then
 
ArchiveDate = set_error('archive_missing_date');
 
end
 
if "no" == DeadURL then
 
local arch_text = cfg.messages['archived'];
 
if sepc ~= "." then arch_text = arch_text:lower() end
 
Archived = sepc .. " " .. substitute( cfg.messages['archived-not-dead'],
 
{ external_link( ArchiveURL, arch_text, A:ORIGIN('ArchiveURL') ) .. ArchiveFormat, ArchiveDate } );
 
if not is_set(OriginalURL) then
 
Archived = Archived .. " " .. set_error('archive_missing_url');  
 
end
 
elseif is_set(OriginalURL) then -- DeadURL is empty, 'yes', 'true', 'y', 'unfit', 'usurped'
 
local arch_text = cfg.messages['archived-dead'];
 
if sepc ~= "." then arch_text = arch_text:lower() end
 
if in_array (DeadURL, {'unfit', 'usurped'}) then
 
Archived = sepc .. " " .. 'Archived from the original on ' .. ArchiveDate; -- format already styled
 
else -- DeadURL is empty, 'yes', 'true', or 'y'
 
Archived = sepc .. " " .. substitute( arch_text,
 
{ external_link( OriginalURL, cfg.messages['original'], OriginalURLorigin ) .. OriginalFormat, ArchiveDate } ); -- format already styled
 
end
 
else
 
local arch_text = cfg.messages['archived-missing'];
 
if sepc ~= "." then arch_text = arch_text:lower() end
 
Archived = sepc .. " " .. substitute( arch_text,
 
{ set_error('archive_missing_url'), ArchiveDate } );
 
end
 
elseif is_set (ArchiveFormat) then
 
Archived = ArchiveFormat; -- if set and ArchiveURL not set ArchiveFormat has error message
 
else
 
Archived = ""
 
end
 
 
local Lay = '';
 
if is_set(LayURL) then
 
if is_set(LayDate) then LayDate = " (" .. LayDate .. ")" end
 
if is_set(LaySource) then
 
LaySource = " &ndash; ''" .. safe_for_italics(LaySource) .. "''";
 
else
 
LaySource = "";
 
end
 
if sepc == '.' then
 
Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary'], A:ORIGIN('LayURL') ) .. LayFormat .. LaySource .. LayDate
 
else
 
Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary']:lower(), A:ORIGIN('LayURL') ) .. LayFormat .. LaySource .. LayDate
 
end
 
elseif is_set (LayFormat) then -- Test if |lay-format= is given without giving a |lay-url=
 
Lay = sepc .. LayFormat; -- if set and LayURL not set, then LayFormat has error message
 
end
 
 
 
if is_set(Transcript) then
 
if is_set(TranscriptURL) then
 
Transcript = external_link( TranscriptURL, Transcript, TranscriptURLorigin );
 
end
 
Transcript = sepc .. ' ' .. Transcript .. TranscriptFormat;
 
elseif is_set(TranscriptURL) then
 
Transcript = external_link( TranscriptURL, nil, TranscriptURLorigin );
 
end
 
 
 
local Publisher;
 
if is_set(Periodical) and
 
not in_array(config.CitationClass, {"encyclopaedia","web","pressrelease","podcast"}) then
 
if is_set(PublisherName) then
 
if is_set(PublicationPlace) then
 
Publisher = PublicationPlace .. ": " .. PublisherName;
 
else
 
Publisher = PublisherName; 
 
end
 
elseif is_set(PublicationPlace) then
 
Publisher= PublicationPlace;
 
else
 
Publisher = "";
 
end
 
if is_set(PublicationDate) then
 
if is_set(Publisher) then
 
Publisher = Publisher .. ", " .. wrap_msg ('published', PublicationDate);
 
else
 
Publisher = PublicationDate;
 
end
 
end
 
if is_set(Publisher) then
 
Publisher = " (" .. Publisher .. ")";
 
end
 
else
 
if is_set(PublicationDate) then
 
PublicationDate = " (" .. wrap_msg ('published', PublicationDate) .. ")";
 
end
 
if is_set(PublisherName) then
 
if is_set(PublicationPlace) then
 
Publisher = sepc .. " " .. PublicationPlace .. ": " .. PublisherName .. PublicationDate;
 
else
 
Publisher = sepc .. " " .. PublisherName .. PublicationDate; 
 
end
 
elseif is_set(PublicationPlace) then
 
Publisher= sepc .. " " .. PublicationPlace .. PublicationDate;
 
else
 
Publisher = PublicationDate;
 
end
 
end
 
 
-- Several of the above rely upon detecting this as nil, so do it last.
 
if is_set(Periodical) then
 
if is_set(Title) or is_set(TitleNote) then
 
Periodical = sepc .. " " .. wrap_style ('italic-title', Periodical)
 
else
 
Periodical = wrap_style ('italic-title', Periodical)
 
end
 
end
 
 
 
--[[
 
Handle the oddity that is cite speech.  This code overrides whatever may be the value assigned to TitleNote (through |department=) and forces it to be " (Speech)" so that
 
the annotation directly follows the |title= parameter value in the citation rather than the |event= parameter value (if provided).
 
]]
 
if "speech" == config.CitationClass then -- cite speech only
 
TitleNote = " (Speech)"; -- annotate the citation
 
if is_set (Periodical) then -- if Periodical, perhaps because of an included |website= or |journal= parameter
 
if is_set (Conference) then -- and if |event= is set
 
Conference = Conference .. sepc .. " "; -- then add appropriate punctuation to the end of the Conference variable before rendering
 
end
 
end
 
end
 
 
 
-- Piece all bits together at last.  Here, all should be non-nil.
 
-- We build things this way because it is more efficient in LUA
 
-- not to keep reassigning to the same string variable over and over.
 
 
 
local tcommon;
 
local tcommon2; -- used for book cite when |contributor= is set
 
 
if in_array(config.CitationClass, {"journal","citation"}) and is_set(Periodical) then
 
if is_set(Others) then Others = Others .. sepc .. " " end
 
tcommon = safe_join( {Others, Title, TitleNote, Conference, Periodical, Format, TitleType, Series,
 
Language, Edition, Publisher, Agency, Volume}, sepc );
 
 
elseif in_array(config.CitationClass, {"book","citation"}) and not is_set(Periodical) then -- special cases for book cites
 
if is_set (Contributors) then -- when we are citing foreword, preface, introduction, etc
 
tcommon = safe_join( {Title, TitleNote}, sepc ); -- author and other stuff will come after this and before tcommon2
 
tcommon2 = safe_join( {Conference, Periodical, Format, TitleType, Series, Language, Volume, Others, Edition, Publisher, Agency}, sepc );
 
else
 
tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language, Volume, Others, Edition, Publisher, Agency}, sepc );
 
end
 
 
 
elseif 'map' == config.CitationClass then -- special cases for cite map
 
if is_set (Chapter) then -- map in a book; TitleType is part of Chapter
 
tcommon = safe_join( {Title, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher, Volume}, sepc );
 
elseif is_set (Periodical) then -- map in a periodical
 
tcommon = safe_join( {Title, TitleType, Format, Periodical, Scale, Series, Language, Cartography, Others, Publisher, Volume}, sepc );
 
else -- a sheet or stand-alone map
 
tcommon = safe_join( {Title, TitleType, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher}, sepc );
 
end
 
 
elseif 'episode' == config.CitationClass then -- special case for cite episode
 
tcommon = safe_join( {Title, TitleNote, TitleType, Series, Transcript, Language, Edition, Publisher}, sepc );
 
else -- all other CS1 templates
 
tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language,
 
Volume, Others, Edition, Publisher, Agency}, sepc );
 
end
 
 
if #ID_list > 0 then
 
ID_list = safe_join( { sepc .. " ",  table.concat( ID_list, sepc .. " " ), ID }, sepc );
 
else
 
ID_list = ID;
 
end
 
 
local idcommon = safe_join( { ID_list, URL, Archived, AccessDate, Via, SubscriptionRequired, Lay, Quote }, sepc );
 
local text;
 
local pgtext = Position .. Sheet .. Sheets .. Page .. Pages .. At;
 
 
 
if is_set(Date) then
 
if is_set (Authors) or is_set (Editors) then -- date follows authors or editors when authors not set
 
Date = " (" .. Date ..")" .. OrigYear .. sepc .. " "; -- in paranetheses
 
else -- neither of authors and editors set
 
if (string.sub(tcommon,-1,-1) == sepc) then -- if the last character of tcommon is sepc
 
Date = " " .. Date .. OrigYear; -- Date does not begin with sepc
 
else
 
Date = sepc .. " " .. Date .. OrigYear; -- Date begins with sepc
 
end
 
end
 
end
 
if is_set(Authors) then
 
if is_set(Coauthors) then
 
if 'vanc' == NameListFormat then -- separate authors and coauthors with proper name-list-separator
 
Authors = Authors .. ', ' .. Coauthors;
 
else
 
Authors = Authors .. '; ' .. Coauthors;
 
end
 
end
 
if not is_set (Date) then -- when date is set it's in parentheses; no Authors termination
 
Authors = terminate_name_list (Authors, sepc); -- when no date, terminate with 0 or 1 sepc and a space
 
end
 
if is_set(Editors) then
 
local in_text = " ";
 
local post_text = "";
 
if is_set(Chapter) and 0 == #c then
 
in_text = in_text .. cfg.messages['in'] .. " "
 
if (sepc ~= '.') then in_text = in_text:lower() end -- lowercase for cs2
 
else
 
if EditorCount <= 1 then
 
post_text = ", " .. cfg.messages['editor'];
 
else
 
post_text = ", " .. cfg.messages['editors'];
 
end
 
end
 
Editors = terminate_name_list (in_text .. Editors .. post_text, sepc); -- terminate with 0 or 1 sepc and a space
 
end
 
if is_set (Contributors) then -- book cite and we're citing the intro, preface, etc
 
local by_text = sepc .. ' ' .. cfg.messages['by'] .. ' ';
 
if (sepc ~= '.') then by_text = by_text:lower() end -- lowercase for cs2
 
Authors = by_text .. Authors; -- author follows title so tweak it here
 
if is_set (Editors) then -- when Editors make sure that Authors gets terminated
 
Authors = terminate_name_list (Authors, sepc); -- terminate with 0 or 1 sepc and a space
 
end
 
if not is_set (Date) then -- when date is set it's in parentheses; no Contributors termination
 
Contributors = terminate_name_list (Contributors, sepc); -- terminate with 0 or 1 sepc and a space
 
end
 
text = safe_join( {Contributors, Date, Chapter, tcommon, Authors, Place, Editors, tcommon2, pgtext, idcommon }, sepc );
 
else
 
text = safe_join( {Authors, Date, Chapter, Place, Editors, tcommon, pgtext, idcommon }, sepc );
 
end
 
elseif is_set(Editors) then
 
if is_set(Date) then
 
if EditorCount <= 1 then
 
Editors = Editors .. ", " .. cfg.messages['editor'];
 
else
 
Editors = Editors .. ", " .. cfg.messages['editors'];
 
end
 
else
 
if EditorCount <= 1 then
 
Editors = Editors .. " (" .. cfg.messages['editor'] .. ")" .. sepc .. " "
 
else
 
Editors = Editors .. " (" .. cfg.messages['editors'] .. ")" .. sepc .. " "
 
end
 
end
 
text = safe_join( {Editors, Date, Chapter, Place, tcommon, pgtext, idcommon}, sepc );
 
else
 
if config.CitationClass=="journal" and is_set(Periodical) then
 
text = safe_join( {Chapter, Place, tcommon, pgtext, Date, idcommon}, sepc );
 
else
 
text = safe_join( {Chapter, Place, tcommon, Date, pgtext, idcommon}, sepc );
 
end
 
end
 
 
if is_set(PostScript) and PostScript ~= sepc then
 
text = safe_join( {text, sepc}, sepc );  --Deals with italics, spaces, etc.
 
text = text:sub(1,-sepc:len()-1);
 
end
 
 
text = safe_join( {text, PostScript}, sepc );
 
 
 
-- Now enclose the whole thing in a <cite/> element
 
local options = {};
 
 
if is_set(config.CitationClass) and config.CitationClass ~= "citation" then
 
options.class = config.CitationClass;
 
options.class = "citation " .. config.CitationClass; -- class=citation required for blue highlight when used with |ref=
 
else
 
options.class = "citation";
 
end
 
 
 
if is_set(Ref) and Ref:lower() ~= "none" then -- set reference anchor if appropriate
+
is_set = utilities.is_set; -- imported functions from Module:Citation/CS1/Utilities
local id = Ref
+
in_array = utilities.in_array;
if ('harv' == Ref ) then
+
substitute = utilities.substitute;
local namelist = {}; -- holds selected contributor, author, editor name list
+
error_comment = utilities.error_comment;
-- local year = first_set (Year, anchor_year); -- Year first for legacy citations and for YMD dates that require disambiguation
+
set_error = utilities.set_error;
local year = first_set ({Year, anchor_year}, 2); -- Year first for legacy citations and for YMD dates that require disambiguation
+
select_one = utilities.select_one;
 +
add_maint_cat = utilities.add_maint_cat;
 +
wrap_style = utilities.wrap_style;
 +
safe_for_italics = utilities.safe_for_italics;
 +
remove_wiki_link = utilities.remove_wiki_link;
  
if #c > 0 then -- if there is a contributor list
+
z = utilities.z; -- table of error and category tables in Module:Citation/CS1/Utilities
namelist = c; -- select it
 
elseif #a > 0 then -- or an author list
 
namelist = a;
 
elseif #e > 0 then -- or an editor list
 
namelist = e;
 
end
 
id = anchor_id (namelist, year); -- go make the CITEREF anchor
 
end
 
options.id = id;
 
end
 
 
if string.len(text:gsub("<span[^>/]*>.-</span>", ""):gsub("%b<>","")) <= 2 then
 
z.error_categories = {};
 
text = set_error('empty_citation');
 
z.message_tail = {};
 
end
 
 
if is_set(options.id) then
 
text = '<cite id="' .. mw.uri.anchorEncode(options.id) ..'" class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</cite>";
 
else
 
text = '<cite class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</cite>";
 
end
 
 
 
local empty_span = '<span style="display:none;">&nbsp;</span>';
 
 
-- Note: Using display: none on the COinS span breaks some clients.
 
local OCinS = '<span title="' .. OCinSoutput .. '" class="Z3988">' .. empty_span .. '</span>';
 
text = text .. OCinS;
 
 
if #z.message_tail ~= 0 then
 
text = text .. " ";
 
for i,v in ipairs( z.message_tail ) do
 
if is_set(v[1]) then
 
if i == #z.message_tail then
 
text = text .. error_comment( v[1], v[2] );
 
else
 
text = text .. error_comment( v[1] .. "; ", v[2] );
 
end
 
end
 
end
 
end
 
  
if #z.maintenance_cats ~= 0 then
+
extract_ids = identifiers.extract_ids; -- imported functions from Module:Citation/CS1/Utilities
text = text .. '<span class="citation-comment" style="display:none; color:#33aa33">';
+
build_id_list = identifiers.build_id_list;
for _, v in ipairs( z.maintenance_cats ) do -- append maintenance categories
+
is_embargoed = identifiers.is_embargoed;
text = text .. ' ' .. v .. ' ([[:Category:' .. v ..'|link]])';
 
end
 
text = text .. '</span>'; -- maintenance mesages (realy just the names of the categories for now)
 
end
 
 
no_tracking_cats = no_tracking_cats:lower();
 
if in_array(no_tracking_cats, {"", "no", "false", "n"}) then
 
for _, v in ipairs( z.error_categories ) do
 
text = text .. '[[Category:' .. v ..']]';
 
end
 
for _, v in ipairs( z.maintenance_cats ) do -- append maintenance categories
 
text = text .. '[[Category:' .. v ..']]';
 
end
 
for _, v in ipairs( z.properties_cats ) do -- append maintenance categories
 
text = text .. '[[Category:' .. v ..']]';
 
end
 
end
 
 
 
return text
+
make_coins_title = metadata.make_coins_title; -- imported functions from Module:Citation/CS1/COinS
end
+
get_coins_pages = metadata.get_coins_pages;
 
+
COinS = metadata.COinS;
--[[--------------------------< H A S _ I N V I S I B L E _ C H A R S >----------------------------------------
 
 
 
This function searches a parameter's value for nonprintable or invisible characters.  The search stops at the first match.
 
 
 
Sometime after this module is done with rendering a citation, some C0 control characters are replaced with the
 
replacement character.  That replacement character is not detected by this test though it is visible to readers
 
of the rendered citation.  This function will detect the replacement character when it is part of the wikisource.
 
  
Output of this function is an error message that identifies the character or the Unicode group that the character
 
belongs to along with its position in the parameter value.
 
 
]]
 
--[[
 
local function has_invisible_chars (param, v)
 
local position = '';
 
local i=1;
 
 
while cfg.invisible_chars[i] do
 
local char=cfg.invisible_chars[i][1] -- the character or group name
 
local pattern=cfg.invisible_chars[i][2] -- the pattern used to find it
 
v = mw.text.unstripNoWiki( v ); -- remove nowiki stripmarkers
 
position = mw.ustring.find (v, pattern) -- see if the parameter value contains characters that match the pattern
 
if position then
 
table.insert( z.message_tail, { set_error( 'invisible_char', {char, wrap_style ('parameter', param), position}, true ) } ); -- add error message
 
return; -- and done with this parameter
 
end
 
i=i+1; -- bump our index
 
end
 
end
 
]]
 
 
--[[--------------------------< Z . C I T A T I O N >----------------------------------------------------------
 
 
This is used by templates such as {{cite book}} to create the actual citation text.
 
 
]]
 
 
function z.citation(frame)
 
local pframe = frame:getParent()
 
local validation;
 
 
 
if nil ~= string.find (frame:getTitle(), 'sandbox', 1, true) then -- did the {{#invoke:}} use sandbox version?
 
cfg = mw.loadData ('Module:Citation/CS1/Configuration/sandbox'); -- load sandbox versions of Configuration and Whitelist and ...
 
whitelist = mw.loadData ('Module:Citation/CS1/Whitelist/sandbox');
 
validation = require ('Module:Citation/CS1/Date_validation/sandbox'); -- ... sandbox version of date validation code
 
 
else -- otherwise
 
cfg = mw.loadData ('Module:Citation/CS1/Configuration'); -- load live versions of Configuration and Whitelist and ...
 
whitelist = mw.loadData ('Module:Citation/CS1/Whitelist');
 
validation = require ('Module:Citation/CS1/Date_validation'); -- ... live version of date validation code
 
end
 
 
dates = validation.dates; -- imported functions
 
year_date_check = validation.year_date_check;
 
 
 
local args = {};
 
local args = {};
 
local suggestions = {};
 
local suggestions = {};
Line 4,108: Line 3,058:
 
end
 
end
  
return z
+
return cs1;

Revision as of 05:07, 16 January 2016

Documentation for this module may be created at Module:Citation/CS1/doc


local cs1 ={};

--[[--------------------------< F O R W A R D   D E C L A R A T I O N S >--------------------------------------
]]

local dates, year_date_check, reformat_dates									-- functions in Module:Citation/CS1/Date_validation

local is_set, in_array, substitute, error_comment, set_error, select_one,		-- functions in Module:Citation/CS1/Utilities
	add_maint_cat, wrap_style, safe_for_italics, remove_wiki_link;

local z ={};																	-- tables in Module:Citation/CS1/Utilities

local extract_ids, build_id_list, is_embargoed;									-- functions in Module:Citation/CS1/Identifiers

local make_coins_title, get_coins_pages, COinS;									-- functions in Module:Citation/CS1/COinS

local cfg = {};																	-- table of configuration tables that are defined in Module:Citation/CS1/Configuration
local whitelist = {};															-- table of tables listing valid template parameter names; defined in Module:Citation/CS1/Whitelist

--[[--------------------------< F I R S T _ S E T >------------------------------------------------------------

Locates and returns the first set value in a table of values where the order established in the table,
left-to-right (or top-to-bottom), is the order in which the values are evaluated.  Returns nil if none are set.

This version replaces the original 'for _, val in pairs do' and a similar version that used ipairs.  With the pairs
version the order of evaluation could not be guaranteed.  With the ipairs version, a nil value would terminate
the for-loop before it reached the actual end of the list.

]]

local function first_set (list, count)
	local i = 1;
	while i <= count do															-- loop through all items in list
		if is_set( list[i] ) then
			return list[i];														-- return the first set list member
		end
		i = i + 1;																-- point to next
	end
end

--[[--------------------------< A D D _ P R O P _ C A T >--------------------------------------------------------

Adds a category to z.properties_cats using names from the configuration file with additional text if any.

]]

local added_prop_cats = {}														-- list of property categories that have been added to z.properties_cats
local function add_prop_cat (key, arguments)
	if not added_prop_cats [key] then
		added_prop_cats [key] = true;											-- note that we've added this category
		table.insert( z.properties_cats, substitute (cfg.prop_cats [key], arguments));		-- make name then add to table
	end
end

--[[--------------------------< A D D _ V A N C _ E R R O R >----------------------------------------------------

Adds a single Vancouver system error message to the template's output regardless of how many error actually exist.
To prevent duplication, added_vanc_errs is nil until an error message is emitted.

]]

local added_vanc_errs;															-- flag so we only emit one Vancouver error / category
local function add_vanc_error ()
	if not added_vanc_errs then
		added_vanc_errs = true;													-- note that we've added this category
		table.insert( z.message_tail, { set_error( 'vancouver', {}, true ) } );
	end
end


--[[--------------------------< I S _ S C H E M E >------------------------------------------------------------

does this thing that purports to be a uri scheme seem to be a valid scheme?  The scheme is checked to see if it
is in agreement with http://tools.ietf.org/html/std66#section-3.1 which says:
	Scheme names consist of a sequence of characters beginning with a
   letter and followed by any combination of letters, digits, plus
   ("+"), period ("."), or hyphen ("-").

returns true if it does, else false

]]

local function is_scheme (scheme)
	return scheme and scheme:match ('^%a[%a%d%+%.%-]*:');						-- true if scheme is set and matches the pattern
end


--[=[-------------------------< I S _ D O M A I N _ N A M E >--------------------------------------------------

Does this thing that purports to be a domain name seem to be a valid domain name?

Syntax defined here: http://tools.ietf.org/html/rfc1034#section-3.5
BNF defined here: https://tools.ietf.org/html/rfc4234
Single character names are generally reserved; see https://tools.ietf.org/html/draft-ietf-dnsind-iana-dns-01#page-15;
	see also [[Single-letter second-level domain]]
list of tlds: https://www.iana.org/domains/root/db

rfc952 (modified by rfc 1123) requires the first and last character of a hostname to be a letter or a digit.  Between
the first and last characters the name may use letters, digits, and the hyphen.

Also allowed are IPv4 addresses. IPv6 not supported

domain is expected to be stripped of any path so that the last character in the last character of the tld.  tld
is two or more alpha characters.  Any preceding '//' (from splitting a url with a scheme) will be stripped
here.  Perhaps not necessary but retained incase it is necessary for IPv4 dot decimal.

There are several tests:
	the first character of the whole domain name including subdomains must be a letter or a digit
	single-letter/digit second-level domains in the .org TLD
	q, x, and z SL domains in the .com TLD
	i and q SL domains in the .net TLD
	single-letter SL domains in the ccTLDs (where the ccTLD is two letters)
	two-character SL domains in gTLDs (where the gTLD is two or more letters)
	three-plus-character SL domains in gTLDs (where the gTLD is two or more letters)
	IPv4 dot-decimal address format; TLD not allowed

returns true if domain appears to be a proper name and tld or IPv4 address, else false

]=]

local function is_domain_name (domain)
	if not domain then
		return false;															-- if not set, abandon
	end
	
	domain = domain:gsub ('^//', '');											-- strip '//' from domain name if present; done here so we only have to do it once
	
	if not domain:match ('^[%a%d]') then										-- first character must be letter or digit
		return false;
	end
																				-- Do most common case first
	if domain:match ('%f[%a%d][%a%d][%a%d%-]+[%a%d]%.%a%a+$') then			    -- three or more character hostname.hostname or hostname.tld
		return true;
	elseif domain:match ('%f[%a%d][%a%d]%.org$') then							-- one character .org hostname
		return true;
	elseif domain:match ('%f[%a][qxz]%.com$') then								-- assigned one character .com hostname (x.com times out 2015-12-10)
		return true;
	elseif domain:match ('%f[%a][iq]%.net$') then								-- assigned one character .net hostname (q.net registered but not active 2015-12-10)
		return true;
	elseif domain:match ('%f[%a%d][%a%d]%.%a%a$') then							-- one character hostname and cctld (2 chars)
		return true;
	elseif domain:match ('%f[%a%d][%a%d][%a%d]%.%a%a+$') then					-- two character hostname and tld
		return true;
	elseif domain:match ('^%d%d?%d?%.%d%d?%d?%.%d%d?%d?%.%d%d?%d?') then		-- IPv4 address
		return true;
	else
		return false;
	end
end


--[[--------------------------< I S _ U R L >------------------------------------------------------------------

returns true if the scheme and domain parts of a url appear to be a valid url; else false.

This function is the last step in the validation process.  This function is separate because there are cases that
are not covered by split_url(), for example is_parameter_ext_wikilink() which is looking for bracketted external
wikilinks.

]]

local function is_url (scheme, domain)
	if is_set (scheme) then														-- if scheme is set check it and domain
		return is_scheme (scheme) and is_domain_name (domain);
	else
		return is_domain_name (domain);											-- scheme not set when url is protocol relative
	end
end


--[[--------------------------< S P L I T _ U R L >------------------------------------------------------------

Split a url into a scheme, authority indicator, and domain.
If protocol relative url, return nil scheme and domain else return nil for both scheme and domain.

When not protocol relative, get scheme, authority indicator, and domain.  If there is an authority indicator (one
or more '/' characters immediately following the scheme's colon), make sure that there are only 2.

Strip off any port and path;

]]

local function split_url (url_str)
	local scheme, authority, domain;
	
	url_str = url_str:gsub ('([%a%d])%.?/.*$', '%1');							-- strip FQDN terminator and path (the capture prevents false replacement of '//')

	if url_str:match ('^//%S*') then											-- if there is what appears to be a protocol relative url
		domain = url_str:match ('^//(%S*)')
	elseif url_str:match ('%S-:/*%S+') then										-- if there is what appears to be a scheme, optional authority indicator, and domain name
		scheme, authority, domain = url_str:match ('(%S-:)(/*)(%S+)');			-- extract the scheme, authority indicator, and domain portions
		authority = authority:gsub ('//', '', 1);								-- replace place 1 pair of '/' with nothing;
		if is_set(authority) then												-- if anything left (1 or 3+ '/' where authority should be) then
			return scheme;														-- return scheme only making domain nil which will cause an error message
		end
		domain = domain:gsub ('(%a):%d+', '%1');								-- strip port number if present
	end
	
	return scheme, domain;
end


--[[--------------------------< L I N K _ P A R A M _ O K >---------------------------------------------------

checks the content of |title-link=, |series-link=, |author-link= etc for properly formatted content: no wikilinks, no urls

Link parameters are to hold the title of a wikipedia article so none of the WP:TITLESPECIALCHARACTERS are allowed:
	# < > [ ] | { } _
except the underscore which is used as a space in wiki urls and # which is used for section links

returns false when the value contains any of these characters.

When there are no illegal characters, this function returns TRUE if value DOES NOT appear to be a valid url (the
|<param>-link= parameter is ok); else false when value appears to be a valid url (the |<param>-link= parameter is NOT ok).

]]

local function link_param_ok (value)
	local scheme, domain;
	if value:find ('[<>%[%]|{}]') then											-- if any prohibited characters
		return false;
	end

	scheme, domain = split_url (value);											-- get scheme or nil and domain or nil from url; 
	return not is_url (scheme, domain);											-- return true if value DOES NOT appear to be a valid url
end

--[[--------------------------< L I N K _ T I T L E _ O K >---------------------------------------------------

Use link_param_ok() to validate |<param>-link= value and its matching |<title>= value.

|<title>= may be wikilinked but not when |<param>-link= has a value.  This function emits an error message when
that condition exists

]]

local function link_title_ok (link, lorig, title, torig)
local orig;

	if is_set (link) then 														-- don't bother if link doesn't have a value
		if not link_param_ok (link) then										-- check |<param>-link= markup
			orig = lorig;														-- identify the failing link parameter
		elseif not link_param_ok (title) then									-- check |<title>-link= markup
			orig = torig;														-- identify the failing link parameter
		end
	end

	if is_set (orig) then
		table.insert( z.message_tail, { set_error( 'bad_paramlink', orig)});	-- url or wikilink in |title= with |title-link=;
	end
end


--[[--------------------------< C H E C K _ U R L >------------------------------------------------------------

Determines whether a URL string appears to be valid.

First we test for space characters.  If any are found, return false.  Then split the url into scheme and domain
portions, or for protocol relative (//example.com) urls, just the domain.  Use is_url() to validate the two
portions of the url.  If both are valid, or for protocol relative if domain is valid, return true, else false.

Because it is different from a standard url, and because this module used external_link() to make external links
that work for standard and news: links, we validate newsgroup names here.  The specification for a newsgroup name
is at https://tools.ietf.org/html/rfc5536#section-3.1.4

]]

local function check_url( url_str )
	if nil == url_str:match ("^%S+$") then										-- if there are any spaces in |url=value it can't be a proper url
		return false;
	end
	local scheme, domain;

	scheme, domain = split_url (url_str);										-- get scheme or nil and domain or nil from url;
	
	if 'news:' == scheme then													-- special case for newsgroups
		return domain:match('^[%a%d%+%-_]+%.[%a%d%+%-_%.]*[%a%d%+%-_]$');
	end
	
	return is_url (scheme, domain);												-- return true if value appears to be a valid url
end


--[=[-------------------------< I S _ P A R A M E T E R _ E X T _ W I K I L I N K >----------------------------

Return true if a parameter value has a string that begins and ends with square brackets [ and ] and the first
non-space characters following the opening bracket appear to be a url.  The test will also find external wikilinks
that use protocol relative urls. Also finds bare urls.

The frontier pattern prevents a match on interwiki links which are similar to scheme:path urls.  The tests that
find bracketed urls are required because the parameters that call this test (currently |title=, |chapter=, |work=,
and |publisher=) may have wikilinks and there are articles or redirects like '//Hus' so, while uncommon, |title=[[//Hus]]
is possible as might be [[en://Hus]].

]=]

local function is_parameter_ext_wikilink (value)
local scheme, domain;

	if value:match ('%f[%[]%[%a%S*:%S+.*%]') then								-- if ext wikilink with scheme and domain: [xxxx://yyyyy.zzz]
		scheme, domain = split_url (value:match ('%f[%[]%[(%a%S*:%S+).*%]'));
	elseif value:match ('%f[%[]%[//%S+.*%]') then								-- if protocol relative ext wikilink: [//yyyyy.zzz]
		scheme, domain = split_url (value:match ('%f[%[]%[(//%S+).*%]'));
	elseif value:match ('%a%S*:%S+') then										-- if bare url with scheme; may have leading or trailing plain text
		scheme, domain = split_url (value:match ('(%a%S*:%S+)'));
	elseif value:match ('//%S+') then											-- if protocol relative bare url: //yyyyy.zzz; may have leading or trailing plain text
		scheme, domain = split_url (value:match ('(//%S+)'));					-- what is left should be the domain
	else
		return false;															-- didn't find anything that is obviously a url
	end

	return is_url (scheme, domain);												-- return true if value appears to be a valid url
end


--[[-------------------------< C H E C K _ F O R _ U R L >-----------------------------------------------------

loop through a list of parameters and their values.  Look at the value and if it has an external link, emit an error message.

]]

local function check_for_url (parameter_list)
local error_message = '';
	for k, v in pairs (parameter_list) do										-- for each parameter in the list
		if is_parameter_ext_wikilink (v) then									-- look at the value; if there is a url add an error message
			if is_set(error_message) then										-- once we've added the first portion of the error message ...
				error_message=error_message .. ", ";							-- ... add a comma space separator
			end
			error_message=error_message .. "&#124;" .. k .. "=";				-- add the failed parameter
		end
	end
	if is_set (error_message) then												-- done looping, if there is an error message, display it
		table.insert( z.message_tail, { set_error( 'param_has_ext_link', {error_message}, true ) } );
	end
end


--[[--------------------------< S A F E _ F O R _ U R L >------------------------------------------------------

Escape sequences for content that will be used for URL descriptions

]]

local function safe_for_url( str )
	if str:match( "%[%[.-%]%]" ) ~= nil then 
		table.insert( z.message_tail, { set_error( 'wikilink_in_url', {}, true ) } );
	end
	
	return str:gsub( '[%[%]\n]', {	
		['['] = '&#91;',
		[']'] = '&#93;',
		['\n'] = ' ' } );
end

--[[--------------------------< E X T E R N A L _ L I N K >----------------------------------------------------

Format an external link with error checking

]]

local function external_link( URL, label, source )
	local error_str = "";
	if not is_set( label ) then
		label = URL;
		if is_set( source ) then
			error_str = set_error( 'bare_url_missing_title', { wrap_style ('parameter', source) }, false, " " );
		else
			error( cfg.messages["bare_url_no_origin"] );
		end			
	end
	if not check_url( URL ) then
		error_str = set_error( 'bad_url', {wrap_style ('parameter', source)}, false, " " ) .. error_str;
	end
	return table.concat({ "[", URL, " ", safe_for_url( label ), "]", error_str });
end

--[[--------------------------< D E P R E C A T E D _ P A R A M E T E R >--------------------------------------

Categorize and emit an error message when the citation contains one or more deprecated parameters.  The function includes the
offending parameter name to the error message.  Only one error message is emitted regardless of the number of deprecated
parameters in the citation.

]]

local page_in_deprecated_cat;													-- sticky flag so that the category is added only once
local function deprecated_parameter(name)
	if not page_in_deprecated_cat then
		page_in_deprecated_cat = true;											-- note that we've added this category
		table.insert( z.message_tail, { set_error( 'deprecated_params', {name}, true ) } );		-- add error message
	end
end

--[[--------------------------< K E R N _ Q U O T E S >--------------------------------------------------------

Apply kerning to open the space between the quote mark provided by the Module and a leading or trailing quote mark contained in a |title= or |chapter= parameter's value.
This function will positive kern either single or double quotes:
	"'Unkerned title with leading and trailing single quote marks'"
	" 'Kerned title with leading and trailing single quote marks' " (in real life the kerning isn't as wide as this example)
Double single quotes (italic or bold wikimarkup) are not kerned.

Call this function for chapter titles, for website titles, etc; not for book titles.

]]

local function kern_quotes (str)
	local cap='';
	local cap2='';
	
	cap, cap2 = str:match ("^([\"\'])([^\'].+)");								-- match leading double or single quote but not double single quotes
	if is_set (cap) then
		str = substitute (cfg.presentation['kern-left'], {cap, cap2});
	end

	cap, cap2 = str:match ("^(.+[^\'])([\"\'])$")
	if is_set (cap) then
		str = substitute (cfg.presentation['kern-right'], {cap, cap2});
	end
	return str;
end

--[[--------------------------< F O R M A T _ S C R I P T _ V A L U E >----------------------------------------

|script-title= holds title parameters that are not written in Latin based scripts: Chinese, Japanese, Arabic, Hebrew, etc. These scripts should
not be italicized and may be written right-to-left.  The value supplied by |script-title= is concatenated onto Title after Title has been wrapped
in italic markup.

Regardless of language, all values provided by |script-title= are wrapped in <bdi>...</bdi> tags to isolate rtl languages from the English left to right.

|script-title= provides a unique feature.  The value in |script-title= may be prefixed with a two-character ISO639-1 language code and a colon:
	|script-title=ja:*** *** (where * represents a Japanese character)
Spaces between the two-character code and the colon and the colon and the first script character are allowed:
	|script-title=ja : *** ***
	|script-title=ja: *** ***
	|script-title=ja :*** ***
Spaces preceding the prefix are allowed: |script-title = ja:*** ***

The prefix is checked for validity.  If it is a valid ISO639-1 language code, the lang attribute (lang="ja") is added to the <bdi> tag so that browsers can
know the language the tag contains.  This may help the browser render the script more correctly.  If the prefix is invalid, the lang attribute
is not added.  At this time there is no error message for this condition.

Supports |script-title= and |script-chapter=

TODO: error messages when prefix is invalid ISO639-1 code; when script_value has prefix but no script;
]]

local function format_script_value (script_value)
	local lang='';																-- initialize to empty string
	local name;
	if script_value:match('^%l%l%s*:') then										-- if first 3 non-space characters are script language prefix
		lang = script_value:match('^(%l%l)%s*:%s*%S.*');						-- get the language prefix or nil if there is no script
		if not is_set (lang) then
			return '';															-- script_value was just the prefix so return empty string
		end
																				-- if we get this far we have prefix and script
		name = mw.language.fetchLanguageName( lang, "en" );						-- get language name so that we can use it to categorize
		if is_set (name) then													-- is prefix a proper ISO 639-1 language code?
			script_value = script_value:gsub ('^%l%l%s*:%s*', '');				-- strip prefix from script
																				-- is prefix one of these language codes?
			if in_array (lang, {'am', 'ar', 'bg', 'bs', 'dv', 'el', 'fa', 'he', 'hy', 'ja', 'ka', 'ko', 'ku', 'mk', 'ml', 'ps', 'ru', 'sd', 'sr', 'th', 'uk', 'ug', 'yi', 'zh'}) then
				add_prop_cat ('script_with_name', {name, lang})
			else
				add_prop_cat ('script')
			end
			lang = ' lang="' .. lang .. '" ';									-- convert prefix into a lang attribute
		else
			lang = '';															-- invalid so set lang to empty string
		end
	end
	script_value = substitute (cfg.presentation['bdi'], {lang, script_value});	-- isolate in case script is rtl

	return script_value;
end

--[[--------------------------< S C R I P T _ C O N C A T E N A T E >------------------------------------------

Initially for |title= and |script-title=, this function concatenates those two parameter values after the script value has been 
wrapped in <bdi> tags.
]]

local function script_concatenate (title, script)
	if is_set (script) then
		script = format_script_value (script);									-- <bdi> tags, lang atribute, categorization, etc; returns empty string on error
		if is_set (script) then
			title = title .. ' ' .. script;										-- concatenate title and script title
		end
	end
	return title;
end


--[[--------------------------< W R A P _ M S G >--------------------------------------------------------------

Applies additional message text to various parameter values. Supplied string is wrapped using a message_list
configuration taking one argument.  Supports lower case text for {{citation}} templates.  Additional text taken
from citation_config.messages - the reason this function is similar to but separate from wrap_style().

]]

local function wrap_msg (key, str, lower)
	if not is_set( str ) then
		return "";
	end
	if true == lower then
		local msg;
		msg = cfg.messages[key]:lower();										-- set the message to lower case before 
		return substitute( msg, str );										-- including template text
	else
		return substitute( cfg.messages[key], str );
	end		
end


--[[--------------------------< F O R M A T _ C H A P T E R _ T I T L E >--------------------------------------

Format the four chapter parameters: |script-chapter=, |chapter=, |trans-chapter=, and |chapter-url= into a single Chapter meta-
parameter (chapter_url_source used for error messages).

]]

local function format_chapter_title (scriptchapter, chapter, transchapter, chapterurl, chapter_url_source, no_quotes)
	local chapter_error = '';
	
	if not is_set (chapter) then
		chapter = '';															-- to be safe for concatenation
	else
		if false == no_quotes then
			chapter = kern_quotes (chapter);										-- if necessary, separate chapter title's leading and trailing quote marks from Module provided quote marks
			chapter = wrap_style ('quoted-title', chapter);
		end
	end

	chapter = script_concatenate (chapter, scriptchapter)						-- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped

	if is_set (transchapter) then
		transchapter = wrap_style ('trans-quoted-title', transchapter);
		if is_set (chapter) then
			chapter = chapter ..  ' ' .. transchapter;
		else																	-- here when transchapter without chapter or script-chapter
			chapter = transchapter;												-- 
			chapter_error = ' ' .. set_error ('trans_missing_title', {'chapter'});
		end
	end

	if is_set (chapterurl) then
		chapter = external_link (chapterurl, chapter, chapter_url_source);		-- adds bare_url_missing_title error if appropriate
	end

	return chapter .. chapter_error;
end

--[[--------------------------< H A S _ I N V I S I B L E _ C H A R S >----------------------------------------

This function searches a parameter's value for nonprintable or invisible characters.  The search stops at the
first match.

This function will detect the visible replacement character when it is part of the wikisource.

Detects but ignores nowiki and math stripmarkers.  Also detects other named stripmarkers (gallery, math, pre, ref)
and identifies them with a slightly different error message.  See also coins_cleanup().

Detects but ignores the character pattern that results from the transclusion of {{'}} templates.

Output of this function is an error message that identifies the character or the Unicode group, or the stripmarker
that was detected along with its position (or, for multi-byte characters, the position of its first byte) in the
parameter value.

]]

local function has_invisible_chars (param, v)
	local position = '';														-- position of invisible char or starting position of stripmarker
	local dummy;																-- end of matching string; not used but required to hold end position when a capture is returned
	local capture;																-- used by stripmarker detection to hold name of the stripmarker
	local i=1;
	local stripmarker, apostrophe;
	
	capture = string.match (v, '[%w%p ]*');										-- Test for values that are simple ASCII text and bypass other tests if true
	if capture == v then														-- if same there are no unicode characters
		return;
	end

	while cfg.invisible_chars[i] do
		local char=cfg.invisible_chars[i][1]									-- the character or group name
		local pattern=cfg.invisible_chars[i][2]									-- the pattern used to find it
		position, dummy, capture = mw.ustring.find (v, pattern)					-- see if the parameter value contains characters that match the pattern
		
		if position then
--			if 'nowiki' == capture or 'math' == capture or ('ref' == capture and 'quote' == param) then 	-- nowiki, math, or quote param and ref stripmarker (not an error condition)
			if 'nowiki' == capture or 'math' == capture then 					-- nowiki, math stripmarker (not an error condition)
				stripmarker = true;												-- set a flag
			elseif true == stripmarker and 'delete' == char then				-- because stripmakers begin and end with the delete char, assume that we've found one end of a stripmarker
				position = nil;													-- unset
			elseif 'apostrophe' == char then									-- apostrophe template uses &zwj;, hair space and zero-width space
				apostrophe = true;
			elseif true == apostrophe and in_array (char, {'zero width joiner', 'zero width space', 'hair space'}) then
				position = nil;													-- unset
			else
				local err_msg;
				if capture then
					err_msg = capture .. ' ' .. char;
				else
					err_msg = char .. ' ' .. 'character';
				end

				table.insert( z.message_tail, { set_error( 'invisible_char', {err_msg, wrap_style ('parameter', param), position}, true ) } );	-- add error message
				return;															-- and done with this parameter
			end
		end
		i=i+1;																	-- bump our index
	end
end


--[[--------------------------< A R G U M E N T _ W R A P P E R >----------------------------------------------

Argument wrapper.  This function provides support for argument mapping defined in the configuration file so that
multiple names can be transparently aliased to single internal variable.

]]

local function argument_wrapper( args )
	local origin = {};
	
	return setmetatable({
		ORIGIN = function( self, k )
			local dummy = self[k]; --force the variable to be loaded.
			return origin[k];
		end
	},
	{
		__index = function ( tbl, k )
			if origin[k] ~= nil then
				return nil;
			end
			
			local args, list, v = args, cfg.aliases[k];
			
			if type( list ) == 'table' then
				v, origin[k] = select_one( args, list, 'redundant_parameters' );
				if origin[k] == nil then
					origin[k] = ''; -- Empty string, not nil
				end
			elseif list ~= nil then
				v, origin[k] = args[list], list;
			else
				-- maybe let through instead of raising an error?
				-- v, origin[k] = args[k], k;
				error( cfg.messages['unknown_argument_map'] );
			end
			
			-- Empty strings, not nil;
			if v == nil then
				v = cfg.defaults[k] or '';
				origin[k] = '';
			end
			
			tbl = rawset( tbl, k, v );
			return v;
		end,
	});
end

--[[--------------------------< V A L I D A T E >--------------------------------------------------------------
Looks for a parameter's name in the whitelist.

Parameters in the whitelist can have three values:
	true - active, supported parameters
	false - deprecated, supported parameters
	nil - unsupported parameters
	
]]

local function validate( name )
	local name = tostring( name );
	local state = whitelist.basic_arguments[ name ];
	
	-- Normal arguments
	if true == state then return true; end		-- valid actively supported parameter
	if false == state then
		deprecated_parameter (name);				-- parameter is deprecated but still supported
		return true;
	end
	
	-- Arguments with numbers in them
	name = name:gsub( "%d+", "#" );				-- replace digit(s) with # (last25 becomes last#
	state = whitelist.numbered_arguments[ name ];
	if true == state then return true; end		-- valid actively supported parameter
	if false == state then
		deprecated_parameter (name);				-- parameter is deprecated but still supported
		return true;
	end
	
	return false;								-- Not supported because not found or name is set to nil
end


--[[--------------------------< N O W R A P _ D A T E >--------------------------------------------------------

When date is YYYY-MM-DD format wrap in nowrap span: <span ...>YYYY-MM-DD</span>.  When date is DD MMMM YYYY or is
MMMM DD, YYYY then wrap in nowrap span: <span ...>DD MMMM</span> YYYY or <span ...>MMMM DD,</span> YYYY

DOES NOT yet support MMMM YYYY or any of the date ranges.

]]

local function nowrap_date (date)
	local cap='';
	local cap2='';

	if date:match("^%d%d%d%d%-%d%d%-%d%d$") then
		date = substitute (cfg.presentation['nowrap1'], date);
	
	elseif date:match("^%a+%s*%d%d?,%s+%d%d%d%d$") or date:match ("^%d%d?%s*%a+%s+%d%d%d%d$") then
		cap, cap2 = string.match (date, "^(.*)%s+(%d%d%d%d)$");
		date = substitute (cfg.presentation['nowrap2'], {cap, cap2});
	end
	
	return date;
end

--[[--------------------------< S E T _ T I T L E T Y P E >----------------------------------------------------

This function sets default title types (equivalent to the citation including |type=<default value>) for those templates that have defaults.
Also handles the special case where it is desirable to omit the title type from the rendered citation (|type=none).

]]

local function set_titletype (cite_class, title_type)
	if is_set(title_type) then
		if "none" == title_type then
			title_type = "";													-- if |type=none then type parameter not displayed
		end
		return title_type;														-- if |type= has been set to any other value use that value
	end

	return cfg.title_types [cite_class] or '';									-- set template's default title type; else empty string for concatenation
end


--[[--------------------------< H Y P H E N _ T O _ D A S H >--------------------------------------------------

Converts a hyphen to a dash

]]

local function hyphen_to_dash( str )
	if not is_set(str) or str:match( "[%[%]{}<>]" ) ~= nil then
		return str;
	end	
	return str:gsub( '-', '–' );
end


--[[--------------------------< S A F E _ J O I N >------------------------------------------------------------

Joins a sequence of strings together while checking for duplicate separation characters.

]]

local function safe_join( tbl, duplicate_char )
	--[[
	Note: we use string functions here, rather than ustring functions.
	
	This has considerably faster performance and should work correctly as 
	long as the duplicate_char is strict ASCII.  The strings
	in tbl may be ASCII or UTF8.
	]]
	
	local str = '';																-- the output string
	local comp = '';															-- what does 'comp' mean?
	local end_chr = '';
	local trim;
	for _, value in ipairs( tbl ) do
		if value == nil then value = ''; end
		
		if str == '' then														-- if output string is empty
			str = value;														-- assign value to it (first time through the loop)
		elseif value ~= '' then
			if value:sub(1,1) == '<' then										-- Special case of values enclosed in spans and other markup.
				comp = value:gsub( "%b<>", "" );								-- remove html markup (<span>string</span> -> string)
			else
				comp = value;
			end
																				-- typically duplicate_char is sepc
			if comp:sub(1,1) == duplicate_char then								-- is first charactier same as duplicate_char? why test first character?
																				--   Because individual string segments often (always?) begin with terminal punct for th
																				--   preceding segment: 'First element' .. 'sepc next element' .. etc?
				trim = false;
				end_chr = str:sub(-1,-1);										-- get the last character of the output string
				-- str = str .. "<HERE(enchr=" .. end_chr.. ")"					-- debug stuff?
				if end_chr == duplicate_char then								-- if same as separator
					str = str:sub(1,-2);										-- remove it
				elseif end_chr == "'" then										-- if it might be wikimarkup
					if str:sub(-3,-1) == duplicate_char .. "''" then			-- if last three chars of str are sepc'' 
						str = str:sub(1, -4) .. "''";							-- remove them and add back ''
					elseif str:sub(-5,-1) == duplicate_char .. "]]''" then		-- if last five chars of str are sepc]]'' 
						trim = true;											-- why? why do this and next differently from previous?
					elseif str:sub(-4,-1) == duplicate_char .. "]''" then		-- if last four chars of str are sepc]'' 
						trim = true;											-- same question
					end
				elseif end_chr == "]" then										-- if it might be wikimarkup
					if str:sub(-3,-1) == duplicate_char .. "]]" then			-- if last three chars of str are sepc]] wikilink 
						trim = true;
					elseif str:sub(-2,-1) == duplicate_char .. "]" then			-- if last two chars of str are sepc] external link
						trim = true;
					elseif str:sub(-4,-1) == duplicate_char .. "'']" then		-- normal case when |url=something & |title=Title.
						trim = true;
					end
				elseif end_chr == " " then										-- if last char of output string is a space
					if str:sub(-2,-1) == duplicate_char .. " " then				-- if last two chars of str are <sepc><space>
						str = str:sub(1,-3);									-- remove them both
					end
				end

				if trim then
					if value ~= comp then 										-- value does not equal comp when value contains html markup
						local dup2 = duplicate_char;
						if dup2:match( "%A" ) then dup2 = "%" .. dup2; end		-- if duplicate_char not a letter then escape it
						
						value = value:gsub( "(%b<>)" .. dup2, "%1", 1 )			-- remove duplicate_char if it follows html markup
					else
						value = value:sub( 2, -1 );								-- remove duplicate_char when it is first character
					end
				end
			end
			str = str .. value;													--add it to the output string
		end
	end
	return str;
end  

--[[--------------------------< I S _ G O O D _ V A N C _ N A M E >--------------------------------------------

For Vancouver Style, author/editor names are supposed to be rendered in Latin (read ASCII) characters.  When a name
uses characters that contain diacritical marks, those characters are to converted to the corresponding Latin character.
When a name is written using a non-Latin alphabet or logogram, that name is to be transliterated into Latin characters.
These things are not currently possible in this module so are left to the editor to do.

This test allows |first= and |last= names to contain any of the letters defined in the four Unicode Latin character sets
	[http://www.unicode.org/charts/PDF/U0000.pdf C0 Controls and Basic Latin] 0041–005A, 0061–007A
	[http://www.unicode.org/charts/PDF/U0080.pdf C1 Controls and Latin-1 Supplement] 00C0–00D6, 00D8–00F6, 00F8–00FF
	[http://www.unicode.org/charts/PDF/U0100.pdf Latin Extended-A] 0100–017F
	[http://www.unicode.org/charts/PDF/U0180.pdf Latin Extended-B] 0180–01BF, 01C4–024F

|lastn= also allowed to contain hyphens, spaces, and apostrophes. (http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35029/)
|firstn= also allowed to contain hyphens, spaces, apostrophes, and periods

At the time of this writing, I had to write the 'if nil == mw.ustring.find ...' test ouside of the code editor and paste it here
because the code editor gets confused between character insertion point and cursor position.

]]

local function is_good_vanc_name (last, first)
	if nil == mw.ustring.find (last, "^[A-Za-zÀ-ÖØ-öø-ƿDŽ-ɏ%-%s%']*$") or nil == mw.ustring.find (first, "^[A-Za-zÀ-ÖØ-öø-ƿDŽ-ɏ%-%s%'%.]*$") then
		add_vanc_error ();
		return false;															-- not a string of latin characters; Vancouver required Romanization
	end;
	return true;
end

--[[--------------------------< R E D U C E _ T O _ I N I T I A L S >------------------------------------------

Attempts to convert names to initials in support of |name-list-format=vanc.  

Names in |firstn= may be separated by spaces or hyphens, or for initials, a period. See http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35062/.

Vancouver style requires family rank designations (Jr, II, III, etc) to be rendered as Jr, 2nd, 3rd, etc.  This form is not
currently supported by this code so correctly formed names like Smith JL 2nd are converted to Smith J2. See http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35085/.

This function uses ustring functions because firstname initials may be any of the unicode Latin characters accepted by is_good_vanc_name ().

]]

local function reduce_to_initials(first)
	if mw.ustring.match(first, "^%u%u$") then return first end;					-- when first contains just two upper-case letters, nothing to do
	local initials = {}
	local i = 0;																-- counter for number of initials
	for word in mw.ustring.gmatch(first, "[^%s%.%-]+") do						-- names separated by spaces, hyphens, or periods
		table.insert(initials, mw.ustring.sub(word,1,1))						-- Vancouver format does not include full stops.
		i = i + 1;																-- bump the counter 
		if 2 <= i then break; end												-- only two initials allowed in Vancouver system; if 2, quit
	end
	return table.concat(initials)												-- Vancouver format does not include spaces.
end

--[[--------------------------< L I S T  _ P E O P L E >-------------------------------------------------------

Formats a list of people (e.g. authors / editors) 

]]

local function list_people(control, people, etal, list_name)					-- TODO: why is list_name here?  not used in this function
	local sep;
	local namesep;
	local format = control.format
	local maximum = control.maximum
	local lastauthoramp = control.lastauthoramp;
	local text = {}

	if 'vanc' == format then													-- Vancouver-like author/editor name styling?
		sep = ',';																-- name-list separator between authors is a comma
		namesep = ' ';															-- last/first separator is a space
	else
		sep = ';'																-- name-list separator between authors is a semicolon
		namesep = ', '															-- last/first separator is <comma><space>
	end
	
	if sep:sub(-1,-1) ~= " " then sep = sep .. " " end
	if is_set (maximum) and maximum < 1 then return "", 0; end					-- returned 0 is for EditorCount; not used for authors
	
	for i,person in ipairs(people) do
		if is_set(person.last) then
			local mask = person.mask
			local one
			local sep_one = sep;
			if is_set (maximum) and i > maximum then
				etal = true;
				break;
			elseif (mask ~= nil) then
				local n = tonumber(mask)
				if (n ~= nil) then
					one = string.rep("&mdash;",n)
				else
					one = mask;
					sep_one = " ";
				end
			else
				one = person.last
				local first = person.first
				if is_set(first) then 
					if ( "vanc" == format ) then								-- if vancouver format
						one = one:gsub ('%.', '');								-- remove periods from surnames (http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35029/)
						if not person.corporate and is_good_vanc_name (one, first) then					-- and name is all Latin characters; corporate authors not tested
							first = reduce_to_initials(first)					-- attempt to convert first name(s) to initials
						end
					end
					one = one .. namesep .. first 
				end
				if is_set(person.link) and person.link ~= control.page_name then
					one = "[[" .. person.link .. "|" .. one .. "]]"				-- link author/editor if this page is not the author's/editor's page
				end
			end
			table.insert( text, one )
			table.insert( text, sep_one )
		end
	end

	local count = #text / 2;													-- (number of names + number of separators) divided by 2
	if count > 0 then 
		if count > 1 and is_set(lastauthoramp) and not etal then
			text[#text-2] = " & ";												-- replace last separator with ampersand text
		end
		text[#text] = nil;														-- erase the last separator
	end
	
	local result = table.concat(text)											-- construct list
	if etal and is_set (result) then											-- etal may be set by |display-authors=etal but we might not have a last-first list
		result = result .. sep .. ' ' .. cfg.messages['et al'];					-- we've go a last-first list and etal so add et al.
	end
	
	return result, count
end

--[[--------------------------< A N C H O R _ I D >------------------------------------------------------------

Generates a CITEREF anchor ID if we have at least one name or a date.  Otherwise returns an empty string.

namelist is one of the contributor-, author-, or editor-name lists chosen in that order.  year is Year or anchor_year.

]]
local function anchor_id (namelist, year)
	local names={};																-- a table for the one to four names and year
	for i,v in ipairs (namelist) do												-- loop through the list and take up to the first four last names
		names[i] = v.last 
		if i == 4 then break end												-- if four then done
	end
	table.insert (names, year);													-- add the year at the end
	local id = table.concat(names);												-- concatenate names and year for CITEREF id
	if is_set (id) then															-- if concatenation is not an empty string
		return "CITEREF" .. id;													-- add the CITEREF portion
	else
		return '';																-- return an empty string; no reason to include CITEREF id in this citation
	end
end


--[[--------------------------< N A M E _ H A S _ E T A L >----------------------------------------------------

Evaluates the content of author and editor name parameters for variations on the theme of et al.  If found,
the et al. is removed, a flag is set to true and the function returns the modified name and the flag.

This function never sets the flag to false but returns it's previous state because it may have been set by
previous passes through this function or by the parameters |display-authors=etal or |display-editors=etal

]]

local function name_has_etal (name, etal, nocat)

	if is_set (name) then														-- name can be nil in which case just return
		local etal_pattern = "[;,]? *[\"']*%f[%a][Ee][Tt] *[Aa][Ll][%.\"']*$"	-- variations on the 'et al' theme
		local others_pattern = "[;,]? *%f[%a]and [Oo]thers";					-- and alternate to et al.
		
		if name:match (etal_pattern) then										-- variants on et al.
			name = name:gsub (etal_pattern, '');								-- if found, remove
			etal = true;														-- set flag (may have been set previously here or by |display-authors=etal)
			if not nocat then													-- no categorization for |vauthors=
				add_maint_cat ('etal');											-- and add a category if not already added
			end
		elseif name:match (others_pattern) then									-- if not 'et al.', then 'and others'?
			name = name:gsub (others_pattern, '');								-- if found, remove
			etal = true;														-- set flag (may have been set previously here or by |display-authors=etal)
			if not nocat then													-- no categorization for |vauthors=
				add_maint_cat ('etal');											-- and add a category if not already added
			end
		end
	end
	return name, etal;															-- 
end

--[[--------------------------< E X T R A C T _ N A M E S >----------------------------------------------------
Gets name list from the input arguments

Searches through args in sequential order to find |lastn= and |firstn= parameters (or their aliases), and their matching link and mask parameters.
Stops searching when both |lastn= and |firstn= are not found in args after two sequential attempts: found |last1=, |last2=, and |last3= but doesn't
find |last4= and |last5= then the search is done.

This function emits an error message when there is a |firstn= without a matching |lastn=.  When there are 'holes' in the list of last names, |last1= and |last3=
are present but |last2= is missing, an error message is emitted. |lastn= is not required to have a matching |firstn=.

When an author or editor parameter contains some form of 'et al.', the 'et al.' is stripped from the parameter and a flag (etal) returned
that will cause list_people() to add the static 'et al.' text from Module:Citation/CS1/Configuration.  This keeps 'et al.' out of the 
template's metadata.  When this occurs, the page is added to a maintenance category.

]]

local function extract_names(args, list_name)
	local names = {};			-- table of names
	local last;					-- individual name components
	local first;
	local link;
	local mask;
	local i = 1;				-- loop counter/indexer
	local n = 1;				-- output table indexer
	local count = 0;			-- used to count the number of times we haven't found a |last= (or alias for authors, |editor-last or alias for editors)
	local etal=false;			-- return value set to true when we find some form of et al. in an author parameter

	local err_msg_list_name = list_name:match ("(%w+)List") .. 's list';		-- modify AuthorList or EditorList for use in error messages if necessary
	while true do
		last = select_one( args, cfg.aliases[list_name .. '-Last'], 'redundant_parameters', i );		-- search through args for name components beginning at 1
		first = select_one( args, cfg.aliases[list_name .. '-First'], 'redundant_parameters', i );
		link = select_one( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i );
		mask = select_one( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i );

		last, etal = name_has_etal (last, etal, false);								-- find and remove variations on et al.
		first, etal = name_has_etal (first, etal, false);								-- find and remove variations on et al.

		if first and not last then												-- if there is a firstn without a matching lastn
			table.insert( z.message_tail, { set_error( 'first_missing_last', {err_msg_list_name, i}, true ) } );	-- add this error message
		elseif not first and not last then										-- if both firstn and lastn aren't found, are we done?
			count = count + 1;													-- number of times we haven't found last and first
			if 2 <= count then													-- two missing names and we give up
				break;															-- normal exit or there is a two-name hole in the list; can't tell which
			end
		else																	-- we have last with or without a first
			link_title_ok (link, list_name:match ("(%w+)List"):lower() .. '-link' .. i, last, list_name:match ("(%w+)List"):lower() .. '-last' .. i);	-- check for improper wikimarkup

			names[n] = {last = last, first = first, link = link, mask = mask, corporate=false};	-- add this name to our names list (corporate for |vauthors= only)
			n = n + 1;															-- point to next location in the names table
			if 1 == count then													-- if the previous name was missing
				table.insert( z.message_tail, { set_error( 'missing_name', {err_msg_list_name, i-1}, true ) } );		-- add this error message
			end
			count = 0;															-- reset the counter, we're looking for two consecutive missing names
		end
		i = i + 1;																-- point to next args location
	end
	
	return names, etal;															-- all done, return our list of names
end

--[[--------------------------< G E T _ I S O 6 3 9 _ C O D E >------------------------------------------------

Validates language names provided in |language= parameter if not an ISO639-1 code.  Handles the special case that is Norwegian where
ISO639-1 code 'no' is mapped to language name 'Norwegian Bokmål' by Extention:CLDR.

Returns the language name and associated ISO639-1 code.  Because case of the source may be incorrect or different from the case that Wikimedia
uses, the name comparisons are done in lower case and when a match is found, the Wikimedia version (assumed to be correct) is returned along
with the code.  When there is no match, we return the original language name string.

mw.language.fetchLanguageNames() will return a list of languages that aren't part of ISO639-1. Names that aren't ISO639-1 but that are included
in the list will be found if that name is provided in the |language= parameter.  For example, if |language=Samaritan Aramaic, that name will be
found with the associated code 'sam', not an ISO639-1 code.  When names are found and the associated code is not two characters, this function
returns only the Wikimedia language name.

Adapted from code taken from Module:Check ISO 639-1.

]]

local function get_iso639_code (lang)
	if 'norwegian' == lang:lower() then											-- special case related to Wikimedia remap of code 'no' at Extension:CLDR
		return 'Norwegian', 'no';												-- Make sure rendered version is properly capitalized
	end
	
	local languages = mw.language.fetchLanguageNames('en', 'all')				-- get a list of language names known to Wikimedia
																				-- ('all' is required for North Ndebele, South Ndebele, and Ojibwa)
	local langlc = mw.ustring.lower(lang);										-- lower case version for comparisons
	
	for code, name in pairs(languages) do										-- scan the list to see if we can find our language
		if langlc == mw.ustring.lower(name) then
			if 2 ~= code:len() then												-- ISO639-1 codes only
				return name;													-- so return the name but not the code
			end
			return name, code;													-- found it, return name to ensure proper capitalization and the ISO639-1 code
		end
	end
	return lang;																-- not valid language; return language in original case and nil for ISO639-1 code
end

--[[--------------------------< L A N G U A G E _ P A R A M E T E R >------------------------------------------

Get language name from ISO639-1 code value provided.  If a code is valid use the returned name; if not, then use the value that was provided with the language parameter.

There is an exception.  There are three ISO639-1 codes for Norewegian language variants.  There are two official variants: Norwegian Bokmål (code 'nb') and
Norwegian Nynorsk (code 'nn').  The third, code 'no',  is defined by ISO639-1 as 'Norwegian' though in Norway this is pretty much meaningless.  However, it appears
that on enwiki, editors are for the most part unaware of the nb and nn variants (compare page counts for these variants at Category:Articles with non-English-language external links.

Because Norwegian Bokmål is the most common language variant, Media wiki has been modified to return Norwegian Bokmål for ISO639-1 code 'no'. Here we undo that and
return 'Norwegian' when editors use |language=no.  We presume that editors don't know about the variants or can't descriminate between them.

See Help talk:Citation Style_1#An ISO 639-1 language name test

When |language= contains a valid ISO639-1 code, the page is assigned to the category for that code: Category:Norwegian-language sources (no) if
the page is a mainspace page and the ISO639-1 code is not 'en'.  Similarly, if the  parameter is |language=Norwegian, it will be categorized in the same way.

This function supports multiple languages in the form |language=nb, French, th where the language names or codes are separated from each other by commas.

]]

local function language_parameter (lang)
	local code;																	-- the ISO639-1 two character code
	local name;																	-- the language name
	local language_list = {};													-- table of language names to be rendered
	local names_table = {};														-- table made from the value assigned to |language=

	names_table = mw.text.split (lang, '%s*,%s*');								-- names should be a comma separated list

	for _, lang in ipairs (names_table) do										-- reuse lang

		if lang:match ('^%a%a%-') then											-- strip ietf language tags from code
			lang = lang:match ('(%a%a)%-')										-- keep only 639-1 code portion to lang; TODO: do something with 3166 alpha 2 country code?
		end
		if 2 == lang:len() then													-- ISO639-1 language code are 2 characters (fetchLanguageName also supports 3 character codes)
			name = mw.language.fetchLanguageName( lang:lower(), "en" );			-- get ISO 639-1 language name if Language is a proper code
		end
	
		if is_set (name) then													-- if Language specified a valid ISO639-1 code
			code = lang:lower();												-- save it
		else
			name, code = get_iso639_code (lang);								-- attempt to get code from name (assign name here so that we are sure of proper capitalization)
		end
	
		if is_set (code) then
			if 'no' == code then name = 'Norwegian' end;						-- override wikimedia when code is 'no'
			if 'en' ~= code then												-- English not the language
				add_prop_cat ('foreign_lang_source', {name, code})
			end
		else
			add_maint_cat ('unknown_lang');										-- add maint category if not already added
		end
		
		table.insert (language_list, name);
		name = '';																-- so we can reuse it
	end
	
	code = #language_list														-- reuse code as number of languages in the list
	if 2 >= code then
		name = table.concat (language_list, ' and ')							-- insert '<space>and<space>' between two language names
	elseif 2 < code then
		language_list[code] = 'and ' .. language_list[code];					-- prepend last name with 'and<space>'
		name = table.concat (language_list, ', ')								-- and concatenate with '<comma><space>' separators
	end
	if 'English' == name then
		return '';																-- if one language and that language is English return an empty string (no annotation)
	end
	return (" " .. wrap_msg ('language', name));								-- otherwise wrap with '(in ...)'
end

--[[--------------------------< S E T _ C S 1 _ S T Y L E >----------------------------------------------------

Set style settings for CS1 citation templates. Returns separator and postscript settings

]]

local function set_cs1_style (ps)
	if not is_set (ps) then														-- unless explicitely set to something
		ps = '.';																-- terminate the rendered citation with a period
	end
	return '.', ps;																-- separator is a full stop
end

--[[--------------------------< S E T _ C S 2 _ S T Y L E >----------------------------------------------------

Set style settings for CS2 citation templates. Returns separator, postscript, ref settings

]]

local function set_cs2_style (ps, ref)
	if not is_set (ps) then														-- if |postscript= has not been set, set cs2 default
		ps = '';																-- make sure it isn't nil
	end
	if not is_set (ref) then													-- if |ref= is not set
		ref = "harv";															-- set default |ref=harv
	end
	return ',', ps, ref;														-- separator is a comma
end

--[[--------------------------< G E T _ S E T T I N G S _ F R O M _ C I T E _ C L A S S >----------------------

When |mode= is not set or when its value is invalid, use config.CitationClass and parameter values to establish
rendered style.

]]

local function get_settings_from_cite_class (ps, ref, cite_class)
	local sep;
	if (cite_class == "citation") then											-- for citation templates (CS2)
		sep, ps, ref = set_cs2_style (ps, ref);
	else																		-- not a citation template so CS1
		sep, ps = set_cs1_style (ps);
	end

	return sep, ps, ref															-- return them all
end

--[[--------------------------< S E T _ S T Y L E >------------------------------------------------------------

Establish basic style settings to be used when rendering the citation.  Uses |mode= if set and valid or uses
config.CitationClass from the template's #invoke: to establish style.

]]

local function set_style (mode, ps, ref, cite_class)
	local sep;
	if 'cs2' == mode then														-- if this template is to be rendered in CS2 (citation) style
		sep, ps, ref = set_cs2_style (ps, ref);
	elseif 'cs1' == mode then													-- if this template is to be rendered in CS1 (cite xxx) style
		sep, ps = set_cs1_style (ps);
	else																		-- anything but cs1 or cs2
		sep, ps, ref = get_settings_from_cite_class (ps, ref, cite_class);		-- get settings based on the template's CitationClass
	end
	if 'none' == ps:lower() then												-- if assigned value is 'none' then
		ps = '';																-- set to empty string
	end
	
	return sep, ps, ref
end

--[=[-------------------------< I S _ P D F >------------------------------------------------------------------

Determines if a url has the file extension that is one of the pdf file extensions used by [[MediaWiki:Common.css]] when
applying the pdf icon to external links.

returns true if file extension is one of the recognized extension, else false

]=]

local function is_pdf (url)
	return url:match ('%.pdf[%?#]?') or url:match ('%.PDF[%?#]?');
end

--[[--------------------------< S T Y L E _ F O R M A T >------------------------------------------------------

Applies css style to |format=, |chapter-format=, etc.  Also emits an error message if the format parameter does
not have a matching url parameter.  If the format parameter is not set and the url contains a file extension that
is recognized as a pdf document by MediaWiki's commons.css, this code will set the format parameter to (PDF) with
the appropriate styling.

]]

local function style_format (format, url, fmt_param, url_param)
	if is_set (format) then
		format = wrap_style ('format', format);									-- add leading space, parenthases, resize
		if not is_set (url) then
			format = format .. set_error( 'format_missing_url', {fmt_param, url_param} );	-- add an error message
		end
	elseif is_pdf (url) then													-- format is not set so if url is a pdf file then
		format = wrap_style ('format', 'PDF');									-- set format to pdf
	else
		format = '';															-- empty string for concatenation
	end
	return format;
end

--[[--------------------------< G E T _ D I S P L A Y _ A U T H O R S _ E D I T O R S >------------------------

Returns a number that defines the number of names displayed for author and editor name lists and a boolean flag
to indicate when et al. should be appended to the name list.

When the value assigned to |display-xxxxors= is a number greater than or equal to zero, return the number and
the previous state of the 'etal' flag (false by default but may have been set to true if the name list contains
some variant of the text 'et al.').

When the value assigned to |display-xxxxors= is the keyword 'etal', return a number that is one greater than the
number of authors in the list and set the 'etal' flag true.  This will cause the list_people() to display all of
the names in the name list followed by 'et al.'

In all other cases, returns nil and the previous state of the 'etal' flag.

inputs:
	max: A['DisplayAuthors'] or A['DisplayEditors']; a number or some flavor of etal
	count: #a or #e
	list_name: 'authors' or 'editors'
	etal: author_etal or editor_etal

]]

local function get_display_authors_editors (max, count, list_name, etal)
	if is_set (max) then
		if 'etal' == max:lower():gsub("[ '%.]", '') then						-- the :gsub() portion makes 'etal' from a variety of 'et al.' spellings and stylings
			max = count + 1;													-- number of authors + 1 so display all author name plus et al.
			etal = true;														-- overrides value set by extract_names()
		elseif max:match ('^%d+$') then											-- if is a string of numbers
			max = tonumber (max);												-- make it a number
			if max >= count then												-- if |display-xxxxors= value greater than or equal to number of authors/editors
				add_maint_cat ('disp_auth_ed', list_name);
			end
		else																	-- not a valid keyword or number
			table.insert( z.message_tail, { set_error( 'invalid_param_val', {'display-' .. list_name, max}, true ) } );		-- add error message
			max = nil;															-- unset; as if |display-xxxxors= had not been set
		end
	end
	
	return max, etal;
end

--[[--------------------------< E X T R A _ T E X T _ I N _ P A G E _ C H E C K >------------------------------

Adds page to Category:CS1 maint: extra text if |page= or |pages= has what appears to be some form of p. or pp. 
abbreviation in the first characters of the parameter content.

check Page and Pages for extraneous p, p., pp, and pp. at start of parameter value:
	good pattern: '^P[^%.P%l]' matches when |page(s)= begins PX or P# but not Px where x and X are letters and # is a dgiit
	bad pattern: '^[Pp][Pp]' matches matches when |page(s)= begins pp or pP or Pp or PP

]]

local function extra_text_in_page_check (page)
--	local good_pattern = '^P[^%.P%l]';
	local good_pattern = '^P[^%.Pp]';											-- ok to begin with uppercase P: P7 (pg 7 of section P) but not p123 (page 123) TODO: add Gg for PG or Pg?
--	local bad_pattern = '^[Pp][Pp]';
	local bad_pattern = '^[Pp]?[Pp]%.?[ %d]';

	if not page:match (good_pattern) and (page:match (bad_pattern) or  page:match ('^[Pp]ages?')) then
		add_maint_cat ('extra_text');
	end
--		if Page:match ('^[Pp]?[Pp]%.?[ %d]') or  Page:match ('^[Pp]ages?[ %d]') or
--			Pages:match ('^[Pp]?[Pp]%.?[ %d]') or  Pages:match ('^[Pp]ages?[ %d]') then
--				add_maint_cat ('extra_text');
--		end
end


--[[--------------------------< P A R S E _ V A U T H O R S _ V E D I T O R S >--------------------------------

This function extracts author / editor names from |vauthors= or |veditors= and finds matching |xxxxor-maskn= and
|xxxxor-linkn= in args.  It then returns a table of assembled names just as extract_names() does.

Author / editor names in |vauthors= or |veditors= must be in Vancouver system style. Corporate or institutional names
may sometimes be required and because such names will often fail the is_good_vanc_name() and other format compliance
tests, are wrapped in doubled paranethese ((corporate name)) to suppress the format tests.

This function sets the vancouver error when a reqired comma is missing and when there is a space between an author's initials.

]]

local function parse_vauthors_veditors (args, vparam, list_name)
	local names = {};															-- table of names assembled from |vauthors=, |author-maskn=, |author-linkn=
	local v_name_table = {};
	local etal = false;															-- return value set to true when we find some form of et al. vauthors parameter
	local last, first, link, mask;
	local corporate = false;

	vparam, etal = name_has_etal (vparam, etal, true);							-- find and remove variations on et al. do not categorize (do it here because et al. might have a period)
	if vparam:find ('%[%[') or vparam:find ('%]%]')	then						-- no wikilinking vauthors names
		add_vanc_error ();
	end
	v_name_table = mw.text.split(vparam, "%s*,%s*")								-- names are separated by commas

	for i, v_name in ipairs(v_name_table) do
		if v_name:match ('^%(%(.+%)%)$') then									-- corporate authors are wrapped in doubled parenthese to supress vanc formatting and error detection
			first = '';															-- set to empty string for concatenation and because it may have been set for previous author/editor
			last = v_name:match ('^%(%((.+)%)%)$')
			corporate = true;
		elseif string.find(v_name, "%s") then
			local lastfirstTable = {}
			lastfirstTable = mw.text.split(v_name, "%s")
			first = table.remove(lastfirstTable);								-- removes and returns value of last element in table which should be author intials
			last  = table.concat(lastfirstTable, " ")							-- returns a string that is the concatenation of all other names that are not initials
			if mw.ustring.match (last, '%a+%s+%u+%s+%a+') or mw.ustring.match (v_name, ' %u %u$') then
				add_vanc_error ();												-- matches last II last; the case when a comma is missing or a space between two intiials
			end
		else
			first = '';															-- set to empty string for concatenation and because it may have been set for previous author/editor
			last = v_name;														-- last name or single corporate name?  Doesn't support multiword corporate names? do we need this?
		end
																
		if is_set (first) and not mw.ustring.match (first, "^%u?%u$") then		-- first shall contain one or two upper-case letters, nothing else
			add_vanc_error ();
		end
																				-- this from extract_names ()
		link = select_one( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i );
		mask = select_one( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i );
		names[i] = {last = last, first = first, link = link, mask = mask, corporate=corporate};		-- add this assembled name to our names list
	end
	return names, etal;															-- all done, return our list of names
end

--[[--------------------------< S E L E C T _ A U T H O R _ E D I T O R _ S O U R C E >------------------------

Select one of |authors=, |authorn= / |lastn / firstn=, or |vauthors= as the source of the author name list or
select one of |editors=, |editorn= / editor-lastn= / |editor-firstn= or |veditors= as the source of the editor name list.

Only one of these appropriate three will be used.  The hierarchy is: |authorn= (and aliases) highest and |authors= lowest and
similarly, |editorn= (and aliases) highest and |editors= lowest

When looking for |authorn= / |editorn= parameters, test |xxxxor1= and |xxxxor2= (and all of their aliases); stops after the second
test which mimicks the test used in extract_names() when looking for a hole in the author name list.  There may be a better
way to do this, I just haven't discovered what that way is.

Emits an error message when more than one xxxxor name source is provided.

In this function, vxxxxors = vauthors or veditors; xxxxors = authors or editors as appropriate.

]]

local function select_author_editor_source (vxxxxors, xxxxors, args, list_name)
local lastfirst = false;
	if select_one( args, cfg.aliases[list_name .. '-Last'], 'none', 1 ) or		-- do this twice incase we have a first 1 without a last1
		select_one( args, cfg.aliases[list_name .. '-Last'], 'none', 2 ) then
			lastfirst=true;
	end

	if (is_set (vxxxxors) and true == lastfirst) or								-- these are the three error conditions
		(is_set (vxxxxors) and is_set (xxxxors)) or
		(true == lastfirst and is_set (xxxxors)) then
			local err_name;
			if 'AuthorList' == list_name then									-- figure out which name should be used in error message
				err_name = 'author';
			else
				err_name = 'editor';
			end
			table.insert( z.message_tail, { set_error( 'redundant_parameters',
				{err_name .. '-name-list parameters'}, true ) } );				-- add error message
	end

	if true == lastfirst then return 1 end;										-- return a number indicating which author name source to use
	if is_set (vxxxxors) then return 2 end;
	if is_set (xxxxors) then return 3 end;
	return 1;																	-- no authors so return 1; this allows missing author name test to run in case there is a first without last 
end


--[[--------------------------< I S _ V A L I D _ P A R A M E T E R _ V A L U E >------------------------------

This function is used to validate a parameter's assigned value for those parameters that have only a limited number
of allowable values (yes, y, true, no, etc).  When the parameter value has not been assigned a value (missing or empty
in the source template) the function refurns true.  If the parameter value is one of the list of allowed values returns
true; else, emits an error message and returns false.

]]

local function is_valid_parameter_value (value, name, possible)
	if not is_set (value) then
		return true;															-- an empty parameter is ok
	elseif in_array(value:lower(), possible) then
		return true;
	else
		table.insert( z.message_tail, { set_error( 'invalid_param_val', {name, value}, true ) } );	-- not an allowed value so add error message
		return false
	end
end


--[[--------------------------< T E R M I N A T E _ N A M E _ L I S T >----------------------------------------

This function terminates a name list (author, contributor, editor) with a separator character (sepc) and a space
when the last character is not a sepc character or when the last three characters are not sepc followed by two
closing square brackets (close of a wikilink).  When either of these is true, the name_list is terminated with a
single space character.

]]

local function terminate_name_list (name_list, sepc)
	if (string.sub (name_list,-1,-1) == sepc) or (string.sub (name_list,-3,-1) == sepc .. ']]') then	-- if last name in list ends with sepc char
		return name_list .. " ";												-- don't add another
	else
		return name_list .. sepc .. ' ';										-- otherwise terninate the name list
	end
end


--[[-------------------------< F O R M A T _ V O L U M E _ I S S U E >----------------------------------------

returns the concatenation of the formatted volume and issue parameters as a single string; or formatted volume
or formatted issue, or an empty string if neither are set.

]]
	
local function format_volume_issue (volume, issue, cite_class, origin, sepc, lower)
	if not is_set (volume) and not is_set (issue) then
		return '';
	end
	
	if 'magazine' == cite_class or (in_array (cite_class, {'citation', 'map'}) and 'magazine' == origin) then
		if is_set (volume) and is_set (issue) then
			return wrap_msg ('vol-no', {sepc, volume, issue}, lower);
		elseif is_set (volume) then
			return wrap_msg ('vol', {sepc, volume}, lower);
		else
			return wrap_msg ('issue', {sepc, issue}, lower);
		end
	end
	
	local vol = '';
		
	if is_set (volume) then
		if (4 < mw.ustring.len(volume)) then
			vol = substitute (cfg.messages['j-vol'], {sepc, volume});
		else
			vol = wrap_style ('vol-bold', hyphen_to_dash(volume));
		end
	end
	if is_set (issue) then
		return vol .. substitute (cfg.messages['j-issue'], issue);
	end
	return vol;
end






--[[-------------------------< N O R M A L I Z E _ P A G E _ L I S T >-----------------------------------------

not currently used

normalizes a comma, ampersand, and/or space separated list to be '<value>, <value>, ..., <value>'
returns list unchanged if there are no commas else strips whitespace and then reformats the list

]]
--[[
local function normalize_page_list (list)
	if not list:find ('[,& ]') then return list end								-- if list is not delimited with commas, ampersands, or spaces; done
	
	list = mw.text.split (list, '[,&%s]+');										-- make a table of values
	list = table.concat (list, ', ');											-- and now make a normalized list
	return list;
end
]]

--[[-------------------------< F O R M A T _ P A G E S _ S H E E T S >-----------------------------------------

adds static text to one of |page(s)= or |sheet(s)= values and returns it with all of the others set to empty strings.
The return order is:
	page, pages, sheet, sheets

Singular has priority over plural when both are provided.

]]

local function format_pages_sheets (page, pages, sheet, sheets, cite_class, origin, sepc, nopp, lower)
	if 'map' == cite_class then													-- only cite map supports sheet(s) as in-source locators
		if is_set (sheet) then
			if 'journal' == origin then
				return '', '', wrap_msg ('j-sheet', sheet, lower), '';
			else
				return '', '', wrap_msg ('sheet', {sepc, sheet}, lower), '';
			end
		elseif is_set (sheets) then
			if 'journal' == origin then
				return '', '', '', wrap_msg ('j-sheets', sheets, lower);
			else
				return '', '', '', wrap_msg ('sheets', {sepc, sheets}, lower);
			end
		end
	end

	local is_journal = 'journal' == cite_class or (in_array (cite_class, {'citation', 'map'}) and 'journal' == origin);

	if is_set (page) then
		if is_journal then
			return substitute (cfg.messages['j-page(s)'], page), '', '', '';
		elseif not nopp then
			return substitute (cfg.messages['p-prefix'], {sepc, page}), '', '', '';
		else
			return substitute (cfg.messages['nopp'], {sepc, page}), '', '', '';
		end
	elseif is_set(pages) then
		if is_journal then
			return substitute (cfg.messages['j-page(s)'], pages), '', '', '';
		elseif tonumber(pages) ~= nil and not nopp then										-- if pages is only digits, assume a single page number
			return '', substitute (cfg.messages['p-prefix'], {sepc, pages}), '', '';
		elseif not nopp then
			return '', substitute (cfg.messages['pp-prefix'], {sepc, pages}), '', '';
		else
			return '', substitute (cfg.messages['nopp'], {sepc, pages}), '', '';
		end
	end
	
	return '', '', '', '';														-- return empty strings
end

--[[--------------------------< C I T A T I O N 0 >------------------------------------------------------------

This is the main function doing the majority of the citation formatting.

]]

local function citation0( config, args)
	--[[ 
	Load Input Parameters
	The argument_wrapper facilitates the mapping of multiple aliases to single internal variable.
	]]
	local A = argument_wrapper( args );
	local i 

	-- Pick out the relevant fields from the arguments.  Different citation templates
	-- define different field names for the same underlying things.	
	local author_etal;
	local a	= {};																-- authors list from |lastn= / |firstn= pairs or |vauthors=
	local Authors;
	local NameListFormat = A['NameListFormat'];
	local Collaboration = A['Collaboration'];

	do																			-- to limit scope of selected
		local selected = select_author_editor_source (A['Vauthors'], A['Authors'], args, 'AuthorList');
		if 1 == selected then
			a, author_etal = extract_names (args, 'AuthorList');				-- fetch author list from |authorn= / |lastn= / |firstn=, |author-linkn=, and |author-maskn=
		elseif 2 == selected then
			NameListFormat = 'vanc';											-- override whatever |name-list-format= might be
			a, author_etal = parse_vauthors_veditors (args, args.vauthors, 'AuthorList');	-- fetch author list from |vauthors=, |author-linkn=, and |author-maskn=
		elseif 3 == selected then
			Authors = A['Authors'];												-- use content of |authors=
		end
		if is_set (Collaboration) then
			author_etal = true;													-- so that |display-authors=etal not required
		end
	end

	local Coauthors = A['Coauthors'];
	local Others = A['Others'];

	local editor_etal;
	local e	= {};																-- editors list from |editor-lastn= / |editor-firstn= pairs or |veditors=
	local Editors;

	do																			-- to limit scope of selected
		local selected = select_author_editor_source (A['Veditors'], A['Editors'], args, 'EditorList');
		if 1 == selected then
			e, editor_etal = extract_names (args, 'EditorList');				-- fetch editor list from |editorn= / |editor-lastn= / |editor-firstn=, |editor-linkn=, and |editor-maskn=
		elseif 2 == selected then
			NameListFormat = 'vanc';											-- override whatever |name-list-format= might be
			e, editor_etal = parse_vauthors_veditors (args, args.veditors, 'EditorList');	-- fetch editor list from |veditors=, |editor-linkn=, and |editor-maskn=
		elseif 3 == selected then
			Editors = A['Editors'];												-- use content of |editors=
		end
	end

	local t = {};																-- translators list from |translator-lastn= / translator-firstn= pairs
	local Translators;															-- assembled translators name list
	t = extract_names (args, 'TranslatorList');									-- fetch translator list from |translatorn= / |translator-lastn=, -firstn=, -linkn=, -maskn=
	
	local c = {};																-- contributors list from |contributor-lastn= / contributor-firstn= pairs
	local Contributors;															-- assembled contributors name list
	local Contribution = A['Contribution'];
	if in_array(config.CitationClass, {"book","citation"}) and not is_set(A['Periodical']) then	-- |contributor= and |contribution= only supported in book cites
		c = extract_names (args, 'ContributorList');							-- fetch contributor list from |contributorn= / |contributor-lastn=, -firstn=, -linkn=, -maskn=
		
		if 0 < #c then
			if not is_set (Contribution) then									-- |contributor= requires |contribution=
				table.insert( z.message_tail, { set_error( 'contributor_missing_required_param', 'contribution')});	-- add missing contribution error message
				c = {};															-- blank the contributors' table; it is used as a flag later
			end
			if 0 == #a then														-- |contributor= requires |author=
				table.insert( z.message_tail, { set_error( 'contributor_missing_required_param', 'author')});	-- add missing author error message
				c = {};															-- blank the contributors' table; it is used as a flag later
			end
		end
	else																		-- if not a book cite
		if select_one (args, cfg.aliases['ContributorList-Last'], 'redundant_parameters', 1 ) then	-- are there contributor name list parameters?
			table.insert( z.message_tail, { set_error( 'contributor_ignored')});	-- add contributor ignored error message
		end
		Contribution = nil;														-- unset
	end

	if not is_valid_parameter_value (NameListFormat, 'name-list-format', cfg.keywords['name-list-format']) then			-- only accepted value for this parameter is 'vanc'
		NameListFormat = '';													-- anything else, set to empty string
	end

	local Year = A['Year'];
	local PublicationDate = A['PublicationDate'];
	local OrigYear = A['OrigYear'];
	local Date = A['Date'];
	local LayDate = A['LayDate'];
	------------------------------------------------- Get title data
	local Title = A['Title'];
	local ScriptTitle = A['ScriptTitle'];
	local BookTitle = A['BookTitle'];
	local Conference = A['Conference'];
	local TransTitle = A['TransTitle'];
	local TitleNote = A['TitleNote'];
	local TitleLink = A['TitleLink'];
			link_title_ok (TitleLink, A:ORIGIN ('TitleLink'), Title, 'title');	-- check for wikimarkup in |title-link= or wikimarkup in |title= when |title-link= is set

	local Chapter = A['Chapter'];
	local ScriptChapter = A['ScriptChapter'];
	local ChapterLink	-- = A['ChapterLink'];									-- deprecated as a parameter but still used internally by cite episode
	local TransChapter = A['TransChapter'];
	local TitleType = A['TitleType'];
	local Degree = A['Degree'];
	local Docket = A['Docket'];
	local ArchiveFormat = A['ArchiveFormat'];
	local ArchiveURL = A['ArchiveURL'];
	local URL = A['URL']
	local URLorigin = A:ORIGIN('URL');											-- get name of parameter that holds URL
	local ChapterURL = A['ChapterURL'];
	local ChapterURLorigin = A:ORIGIN('ChapterURL');							-- get name of parameter that holds ChapterURL
	local ConferenceFormat = A['ConferenceFormat'];
	local ConferenceURL = A['ConferenceURL'];
	local ConferenceURLorigin = A:ORIGIN('ConferenceURL');						-- get name of parameter that holds ConferenceURL
	local Periodical = A['Periodical'];
	local Periodical_origin = A:ORIGIN('Periodical');							-- get the name of the periodical parameter

	local Series = A['Series'];
	
	local Volume;
	local Issue;
	local Page;
	local Pages;
	local At;

	if in_array (config.CitationClass, cfg.templates_using_volume) and not ('conference' == config.CitationClass and not is_set (Periodical)) then
		Volume = A['Volume'];
	end
	if in_array (config.CitationClass, cfg.templates_using_issue) and not (in_array (config.CitationClass, {'conference', 'map'}) and not is_set (Periodical))then
		Issue = A['Issue'];
	end
	local Position = '';
	if not in_array (config.CitationClass, cfg.templates_not_using_page) then
		Page = A['Page'];
		Pages = hyphen_to_dash( A['Pages'] );	
		At = A['At'];
	end

	local Edition = A['Edition'];
	local PublicationPlace = A['PublicationPlace']
	local Place = A['Place'];
	
	local PublisherName = A['PublisherName'];
	local RegistrationRequired = A['RegistrationRequired'];
		if not is_valid_parameter_value (RegistrationRequired, 'registration', cfg.keywords ['yes_true_y']) then
			RegistrationRequired=nil;
		end
	local SubscriptionRequired = A['SubscriptionRequired'];
		if not is_valid_parameter_value (SubscriptionRequired, 'subscription', cfg.keywords ['yes_true_y']) then
			SubscriptionRequired=nil;
		end

	local Via = A['Via'];
	local AccessDate = A['AccessDate'];
	local ArchiveDate = A['ArchiveDate'];
	local Agency = A['Agency'];
	local DeadURL = A['DeadURL']
		if not is_valid_parameter_value (DeadURL, 'dead-url', cfg.keywords ['deadurl']) then	-- set in config.defaults to 'yes'
			DeadURL = '';														-- anything else, set to empty string
		end

	local Language = A['Language'];
	local Format = A['Format'];
	local ChapterFormat = A['ChapterFormat'];
	local DoiBroken = A['DoiBroken'];
	local ID = A['ID'];
	local ASINTLD = A['ASINTLD'];
	local IgnoreISBN = A['IgnoreISBN'];
		if not is_valid_parameter_value (IgnoreISBN, 'ignore-isbn-error', cfg.keywords ['yes_true_y']) then
			IgnoreISBN = nil;													-- anything else, set to empty string
		end
	local Embargo = A['Embargo'];
	local Class = A['Class'];													-- arxiv class identifier

	local ID_list = extract_ids( args );

	local Quote = A['Quote'];

	local LayFormat = A['LayFormat'];
	local LayURL = A['LayURL'];
	local LaySource = A['LaySource'];
	local Transcript = A['Transcript'];
	local TranscriptFormat = A['TranscriptFormat'];
	local TranscriptURL = A['TranscriptURL'] 
	local TranscriptURLorigin = A:ORIGIN('TranscriptURL');						-- get name of parameter that holds TranscriptURL

	local LastAuthorAmp = A['LastAuthorAmp'];
		if not is_valid_parameter_value (LastAuthorAmp, 'last-author-amp', cfg.keywords ['yes_true_y']) then
			LastAuthorAmp = nil;													-- set to empty string
		end
	local no_tracking_cats = A['NoTracking'];
		if not is_valid_parameter_value (no_tracking_cats, 'no-tracking', cfg.keywords ['yes_true_y']) then
			no_tracking_cats = nil;												-- set to empty string
		end

--these are used by cite interview
	local Callsign = A['Callsign'];
	local City = A['City'];
	local Program = A['Program'];

--local variables that are not cs1 parameters
	local use_lowercase;														-- controls capitalization of certain static text
	local this_page = mw.title.getCurrentTitle();								-- also used for COinS and for language
	local anchor_year;															-- used in the CITEREF identifier
	local COinS_date = {};														-- holds date info extracted from |date= for the COinS metadata by Module:Date verification

	local DF = A['DF'];															-- date format set in cs1|2 template
	if not is_valid_parameter_value (DF, 'df', cfg.keywords['date-format']) then	-- validate reformatting keyword
		DF = '';																-- not valid, set to empty string
	end

-- set default parameter values defined by |mode= parameter.  If |mode= is empty or omitted, use CitationClass to set these values
	local Mode = A['Mode'];
	if not is_valid_parameter_value (Mode, 'mode', cfg.keywords['mode']) then
		Mode = '';
	end
	local sepc;											-- separator between citation elements for CS1 a period, for CS2, a comma
	local PostScript;
	local Ref;
	sepc, PostScript, Ref = set_style (Mode:lower(), A['PostScript'], A['Ref'], config.CitationClass);
	use_lowercase = ( sepc == ',' );					-- used to control capitalization for certain static text

--check this page to see if it is in one of the namespaces that cs1 is not supposed to add to the error categories
	if not is_set (no_tracking_cats) then										-- ignore if we are already not going to categorize this page
		if in_array (this_page.nsText, cfg.uncategorized_namespaces) then
			no_tracking_cats = "true";											-- set no_tracking_cats
		end
		for _,v in ipairs (cfg.uncategorized_subpages) do						-- cycle through page name patterns
			if this_page.text:match (v) then									-- test page name against each pattern
				no_tracking_cats = "true";										-- set no_tracking_cats
				break;															-- bail out if one is found
			end
		end
	end

-- check for extra |page=, |pages= or |at= parameters. (also sheet and sheets while we're at it)
	select_one( args, {'page', 'p', 'pp', 'pages', 'at', 'sheet', 'sheets'}, 'redundant_parameters' );		-- this is a dummy call simply to get the error message and category

	local NoPP = A['NoPP'] 
	if is_set (NoPP) and is_valid_parameter_value (NoPP, 'nopp', cfg.keywords ['yes_true_y']) then
		NoPP = true;
	else
		NoPP = nil;																-- unset, used as a flag later
	end

	if is_set(Page) then
		if is_set(Pages) or is_set(At) then
			Pages = '';															-- unset the others
			At = '';
		end
		extra_text_in_page_check (Page);										-- add this page to maint cat if |page= value begins with what looks like p. or pp.
	elseif is_set(Pages) then
		if is_set(At) then
			At = '';															-- unset
		end
		extra_text_in_page_check (Pages);										-- add this page to maint cat if |pages= value begins with what looks like p. or pp.
	end	

-- both |publication-place= and |place= (|location=) allowed if different
	if not is_set(PublicationPlace) and is_set(Place) then
		PublicationPlace = Place;							-- promote |place= (|location=) to |publication-place
	end
	
	if PublicationPlace == Place then Place = ''; end		-- don't need both if they are the same
	
--[[
Parameter remapping for cite encyclopedia:
When the citation has these parameters:
	|encyclopedia and |title then map |title to |article and |encyclopedia to |title
	|encyclopedia and |article then map |encyclopedia to |title
	|encyclopedia then map |encyclopedia to |title

	|trans_title maps to |trans_chapter when |title is re-mapped
	|url maps to |chapterurl when |title is remapped

All other combinations of |encyclopedia, |title, and |article are not modified

]]

local Encyclopedia = A['Encyclopedia'];

	if ( config.CitationClass == "encyclopaedia" ) or ( config.CitationClass == "citation" and is_set (Encyclopedia)) then	-- test code for citation
		if is_set(Periodical) then												-- Periodical is set when |encyclopedia is set
			if is_set(Title) or is_set (ScriptTitle) then
				if not is_set(Chapter) then
					Chapter = Title;											-- |encyclopedia and |title are set so map |title to |article and |encyclopedia to |title
					ScriptChapter = ScriptTitle;
					TransChapter = TransTitle;
					ChapterURL = URL;
					if not is_set (ChapterURL) and is_set (TitleLink) then
						Chapter= '[[' .. TitleLink .. '|' .. Chapter .. ']]';
					end
					Title = Periodical;
					ChapterFormat = Format;
					Periodical = '';											-- redundant so unset
					TransTitle = '';
					URL = '';
					Format = '';
					TitleLink = '';
					ScriptTitle = '';
				end
			else																-- |title not set
				Title = Periodical;												-- |encyclopedia set and |article set or not set so map |encyclopedia to |title
				Periodical = '';												-- redundant so unset
			end
		end
	end

-- Special case for cite techreport.
	if (config.CitationClass == "techreport") then								-- special case for cite techreport
		if is_set(A['Number']) then													-- cite techreport uses 'number', which other citations alias to 'issue'
			if not is_set(ID) then												-- can we use ID for the "number"?
				ID = A['Number'];													-- yes, use it
			else																-- ID has a value so emit error message
				table.insert( z.message_tail, { set_error('redundant_parameters', {wrap_style ('parameter', 'id') .. ' and ' .. wrap_style ('parameter', 'number')}, true )});
			end
		end	
	end

-- special case for cite interview
	if (config.CitationClass == "interview") then
		if is_set(Program) then
			ID = ' ' .. Program;
		end
		if is_set(Callsign) then
			if is_set(ID) then
				ID = ID .. sepc .. ' ' .. Callsign;
			else
				ID = ' ' .. Callsign;
			end
		end
		if is_set(City) then
			if is_set(ID) then
				ID = ID .. sepc .. ' ' .. City;
			else
				ID = ' ' .. City;
			end
		end

		if is_set(Others) then
			if is_set(TitleType) then
				Others = ' ' .. TitleType .. ' with ' .. Others;
				TitleType = '';
			else
				Others = ' ' .. 'Interview with ' .. Others;
			end
		else
			Others = '(Interview)';
		end
	end

-- special case for cite mailing list
	if (config.CitationClass == "mailinglist") then
		Periodical = A ['MailingList'];
	elseif 'mailinglist' == A:ORIGIN('Periodical') then
		Periodical = '';														-- unset because mailing list is only used for cite mailing list
	end

-- Account for the oddity that is {{cite conference}}, before generation of COinS data.
	if 'conference' == config.CitationClass then
		if is_set(BookTitle) then
			Chapter = Title;
--			ChapterLink = TitleLink;											-- |chapterlink= is deprecated
			ChapterURL = URL;
			ChapterURLorigin = URLorigin;
			URLorigin = '';
			ChapterFormat = Format;
			TransChapter = TransTitle;
			Title = BookTitle;
			Format = '';
--			TitleLink = '';
			TransTitle = '';
			URL = '';
		end
	elseif 'speech' ~= config.CitationClass then
		Conference = '';														-- not cite conference or cite speech so make sure this is empty string
	end

-- cite map oddities
	local Cartography = "";
	local Scale = "";
	local Sheet = A['Sheet'] or '';
	local Sheets = A['Sheets'] or '';
	if config.CitationClass == "map" then
		Chapter = A['Map'];
		ChapterURL = A['MapURL'];
		TransChapter = A['TransMap'];
		ChapterURLorigin = A:ORIGIN('MapURL');
		ChapterFormat = A['MapFormat'];
		
		Cartography = A['Cartography'];
		if is_set( Cartography ) then
			Cartography = sepc .. " " .. wrap_msg ('cartography', Cartography, use_lowercase);
		end		
		Scale = A['Scale'];
		if is_set( Scale ) then
			Scale = sepc .. " " .. Scale;
		end
	end

-- Account for the oddities that are {{cite episode}} and {{cite serial}}, before generation of COinS data.
	if 'episode' == config.CitationClass or 'serial' == config.CitationClass then
		local AirDate = A['AirDate'];
		local SeriesLink = A['SeriesLink'];

		link_title_ok (SeriesLink, A:ORIGIN ('SeriesLink'), Series, 'series');	-- check for wikimarkup in |series-link= or wikimarkup in |series= when |series-link= is set

		local Network = A['Network'];
		local Station = A['Station'];
		local s, n = {}, {};
																				-- do common parameters first
		if is_set(Network) then table.insert(n, Network); end
		if is_set(Station) then table.insert(n, Station); end
		ID = table.concat(n, sepc .. ' ');
		
		if not is_set (Date) and is_set (AirDate) then							-- promote airdate to date
			Date = AirDate;
		end

		if 'episode' == config.CitationClass then								-- handle the oddities that are strictly {{cite episode}}
			local Season = A['Season'];
			local SeriesNumber = A['SeriesNumber'];

			if is_set (Season) and is_set (SeriesNumber) then					-- these are mutually exclusive so if both are set
				table.insert( z.message_tail, { set_error( 'redundant_parameters', {wrap_style ('parameter', 'season') .. ' and ' .. wrap_style ('parameter', 'seriesno')}, true ) } );		-- add error message
				SeriesNumber = '';												-- unset; prefer |season= over |seriesno=
			end
																				-- assemble a table of parts concatenated later into Series
			if is_set(Season) then table.insert(s, wrap_msg ('season', Season, use_lowercase)); end
			if is_set(SeriesNumber) then table.insert(s, wrap_msg ('series', SeriesNumber, use_lowercase)); end
			if is_set(Issue) then table.insert(s, wrap_msg ('episode', Issue, use_lowercase)); end
			Issue = '';															-- unset because this is not a unique parameter
	
			Chapter = Title;													-- promote title parameters to chapter
			ScriptChapter = ScriptTitle;
			ChapterLink = TitleLink;											-- alias episodelink
			TransChapter = TransTitle;
			ChapterURL = URL;
			ChapterURLorigin = A:ORIGIN('URL');
			
			Title = Series;														-- promote series to title
			TitleLink = SeriesLink;
			Series = table.concat(s, sepc .. ' ');								-- this is concatenation of season, seriesno, episode number

			if is_set (ChapterLink) and not is_set (ChapterURL) then			-- link but not URL
				Chapter = '[[' .. ChapterLink .. '|' .. Chapter .. ']]';		-- ok to wikilink
			elseif is_set (ChapterLink) and is_set (ChapterURL) then			-- if both are set, URL links episode;
				Series = '[[' .. ChapterLink .. '|' .. Series .. ']]';			-- series links with ChapterLink (episodelink -> TitleLink -> ChapterLink) ugly
			end
			URL = '';															-- unset
			TransTitle = '';
			ScriptTitle = '';
			
		else																	-- now oddities that are cite serial
			Issue = '';															-- unset because this parameter no longer supported by the citation/core version of cite serial
			Chapter = A['Episode'];												-- TODO: make |episode= available to cite episode someday?
			if is_set (Series) and is_set (SeriesLink) then
				Series = '[[' .. SeriesLink .. '|' .. Series .. ']]';
			end
			Series = wrap_style ('italic-title', Series);						-- series is italicized
		end	
	end
-- end of {{cite episode}} stuff

-- Account for the oddities that are {{cite arxiv}}, before generation of COinS data.
	if 'arxiv' == config.CitationClass then
		if not is_set (ID_list['ARXIV']) then									-- |arxiv= or |eprint= required for cite arxiv
			table.insert( z.message_tail, { set_error( 'arxiv_missing', {}, true ) } );		-- add error message
		elseif is_set (Series) then												-- series is an alias of version
			ID_list['ARXIV'] = ID_list['ARXIV'] .. Series;						-- concatenate version onto the end of the arxiv identifier
			Series = '';														-- unset
			deprecated_parameter ('version');									-- deprecated parameter but only for cite arxiv
		end
		
		if first_set ({AccessDate, At, Chapter, Format, Page, Pages, Periodical, PublisherName, URL,	-- a crude list of parameters that are not supported by cite arxiv
			ID_list['ASIN'], ID_list['BIBCODE'], ID_list['DOI'], ID_list['ISBN'], ID_list['ISSN'],
			ID_list['JFM'], ID_list['JSTOR'], ID_list['LCCN'], ID_list['MR'], ID_list['OCLC'], ID_list['OL'],
			ID_list['OSTI'], ID_list['PMC'], ID_list['PMID'], ID_list['RFC'], ID_list['SSRN'], ID_list['USENETID'], ID_list['ZBL']},27) then
				table.insert( z.message_tail, { set_error( 'arxiv_params_not_supported', {}, true ) } );		-- add error message

				AccessDate= '';													-- set these to empty string; not supported in cite arXiv
				PublisherName = '';												-- (if the article has been published, use cite journal, or other)
				Chapter = '';
				URL = '';
				Format = '';
				Page = ''; Pages = ''; At = '';
		end
		Periodical = 'arXiv';													-- set to arXiv for COinS; after that, must be set to empty string
	end

-- handle type parameter for those CS1 citations that have default values
	if in_array(config.CitationClass, {"AV-media-notes", "DVD-notes", "mailinglist", "map", "podcast", "pressrelease", "report", "techreport", "thesis"}) then
		TitleType = set_titletype (config.CitationClass, TitleType);
		if is_set(Degree) and "Thesis" == TitleType then						-- special case for cite thesis
			TitleType = Degree .. " thesis";
		end
	end

	if is_set(TitleType) then													-- if type parameter is specified
	TitleType = substitute( cfg.messages['type'], TitleType);					-- display it in parentheses
	end

-- legacy: promote concatenation of |month=, and |year= to Date if Date not set; or, promote PublicationDate to Date if neither Date nor Year are set.
	if not is_set (Date) then
		Date = Year;															-- promote Year to Date
		Year = nil;																-- make nil so Year as empty string isn't used for CITEREF
		if not is_set (Date) and is_set(PublicationDate) then					-- use PublicationDate when |date= and |year= are not set
			Date = PublicationDate;												-- promote PublicationDate to Date
			PublicationDate = '';												-- unset, no longer needed
		end
	end

	if PublicationDate == Date then PublicationDate = ''; end					-- if PublicationDate is same as Date, don't display in rendered citation

--[[
Go test all of the date-holding parameters for valid MOS:DATE format and make sure that dates are real dates. This must be done before we do COinS because here is where
we get the date used in the metadata.

Date validation supporting code is in Module:Citation/CS1/Date_validation
]]
	do	-- create defined block to contain local variables error_message and mismatch
		local error_message = '';
																				-- AirDate has been promoted to Date so not necessary to check it
		anchor_year, error_message = dates({['access-date']=AccessDate, ['archive-date']=ArchiveDate, ['date']=Date, ['doi-broken-date']=DoiBroken,
			['embargo']=Embargo, ['lay-date']=LayDate, ['publication-date']=PublicationDate, ['year']=Year}, COinS_date);

		if is_set (Year) and is_set (Date) then									-- both |date= and |year= not normally needed; 
			local mismatch = year_date_check (Year, Date)
			if 0 == mismatch then												-- |year= does not match a year-value in |date=
				if is_set (error_message) then									-- if there is already an error message
					error_message = error_message .. ', ';						-- tack on this additional message
				end
				error_message = error_message .. '&#124;year= / &#124;date= mismatch';
			elseif 1 == mismatch then											-- |year= matches year-value in |date=
				add_maint_cat ('date_year');
			end
		end

		if is_set(error_message) then
			table.insert( z.message_tail, { set_error( 'bad_date', {error_message}, true ) } );	-- add this error message
		elseif is_set (DF) then
			local date_parameters_list = {['access-date']=AccessDate, ['archive-date']=ArchiveDate, ['date']=Date, ['doi-broken-date']=DoiBroken,
				['embargo']=Embargo, ['lay-date']=LayDate, ['publication-date']=PublicationDate};
			
			if reformat_dates (date_parameters_list, DF, false) then			-- reformat to DF format, use long month names if appropriate
				AccessDate = date_parameters_list['access-date'];				-- overwrite date holding parameters with reformatted values
				ArchiveDate = date_parameters_list['archive-date'];				-- TODO: move all dates into this table at the beginning and ...
				Date = date_parameters_list['date'];							-- ... use them from this table? no in-and-out like we're doing here
				DoiBroken = date_parameters_list['doi-broken-date'];
				Embargo = date_parameters_list['embargo'];
				LayDate = date_parameters_list['lay-date'];
				PublicationDate = date_parameters_list['publication-date'];
			end
		end
	end	-- end of do

-- Account for the oddity that is {{cite journal}} with |pmc= set and |url= not set.  Do this after date check but before COInS.
-- Here we unset Embargo if PMC not embargoed (|embargo= not set in the citation) or if the embargo time has expired. Otherwise, holds embargo date
	Embargo = is_embargoed (Embargo);											-- 

	if config.CitationClass == "journal" and not is_set(URL) and is_set(ID_list['PMC']) then
		if not is_set (Embargo) then											-- if not embargoed or embargo has expired
			URL=cfg.id_handlers['PMC'].prefix .. ID_list['PMC'];				-- set url to be the same as the PMC external link if not embargoed
			URLorigin = cfg.id_handlers['PMC'].parameters[1];					-- set URLorigin to parameter name for use in error message if citation is missing a |title=
		end
	end

-- At this point fields may be nil if they weren't specified in the template use.  We can use that fact.
	-- Test if citation has no title
	if	not is_set(Title) and
		not is_set(TransTitle) and
		not is_set(ScriptTitle) then
			if 'episode' == config.CitationClass then							-- special case for cite episode; TODO: is there a better way to do this?
				table.insert( z.message_tail, { set_error( 'citation_missing_title', {'series'}, true ) } );
			else
				table.insert( z.message_tail, { set_error( 'citation_missing_title', {'title'}, true ) } );
			end
	end
	
	if 'none' == Title and in_array (config.CitationClass, {'journal', 'citation'}) and is_set (Periodical) and 'journal' == A:ORIGIN('Periodical') then	-- special case for journal cites
		Title = '';																-- set title to empty string
		add_maint_cat ('untitled');
	end

	check_for_url ({															-- add error message when any of these parameters contains a URL
		['title']=Title,
		[A:ORIGIN('Chapter')]=Chapter,
		[A:ORIGIN('Periodical')]=Periodical,
		[A:ORIGIN('PublisherName')] = PublisherName
		});

	-- COinS metadata (see <http://ocoins.info/>) for automated parsing of citation information.
	-- handle the oddity that is cite encyclopedia and {{citation |encyclopedia=something}}. Here we presume that
	-- when Periodical, Title, and Chapter are all set, then Periodical is the book (encyclopedia) title, Title
	-- is the article title, and Chapter is a section within the article.  So, we remap 
	
	local coins_chapter = Chapter;												-- default assuming that remapping not required
	local coins_title = Title;													-- et tu
	if 'encyclopaedia' == config.CitationClass or ('citation' == config.CitationClass and is_set (Encyclopedia)) then
		if is_set (Chapter) and is_set (Title) and is_set (Periodical) then		-- if all are used then
			coins_chapter = Title;												-- remap
			coins_title = Periodical;
		end
	end
	local coins_author = a;														-- default for coins rft.au 
	if 0 < #c then																-- but if contributor list
		coins_author = c;														-- use that instead
	end

	-- this is the function call to COinS()
	local OCinSoutput = COinS({
		['Periodical'] = Periodical,
		['Encyclopedia'] = Encyclopedia,
		['Chapter'] = make_coins_title (coins_chapter, ScriptChapter),			-- Chapter and ScriptChapter stripped of bold / italic wikimarkup
		['Degree'] = Degree;													-- cite thesis only
		['Title'] = make_coins_title (coins_title, ScriptTitle),				-- Title and ScriptTitle stripped of bold / italic wikimarkup
		['PublicationPlace'] = PublicationPlace,
		['Date'] = COinS_date.rftdate,											-- COinS_date has correctly formatted date if Date is valid;
		['Season'] = COinS_date.rftssn,
		['Chron'] =  COinS_date.rftchron or (not COinS_date.rftdate and Date) or '',	-- chron but if not set and invalid date format use Date; keep this last bit?
		['Series'] = Series,
		['Volume'] = Volume,
		['Issue'] = Issue,
		['Pages'] = get_coins_pages (first_set ({Sheet, Sheets, Page, Pages, At}, 5)),				-- pages stripped of external links
		['Edition'] = Edition,
		['PublisherName'] = PublisherName,
		['URL'] = first_set ({ChapterURL, URL}, 2),
		['Authors'] = coins_author,
		['ID_list'] = ID_list,
		['RawPage'] = this_page.prefixedText,
	}, config.CitationClass);

-- Account for the oddities that are {{cite arxiv}}, AFTER generation of COinS data.
	if 'arxiv' == config.CitationClass then										-- we have set rft.jtitle in COinS to arXiv, now unset so it isn't displayed
		Periodical = '';														-- periodical not allowed in cite arxiv; if article has been published, use cite journal
	end

-- special case for cite newsgroup.  Do this after COinS because we are modifying Publishername to include some static text
	if 'newsgroup' == config.CitationClass then
		if is_set (PublisherName) then
			PublisherName = substitute (cfg.messages['newsgroup'], external_link( 'news:' .. PublisherName, PublisherName, A:ORIGIN('PublisherName') ));
		end
	end



	-- Now perform various field substitutions.
	-- We also add leading spaces and surrounding markup and punctuation to the
	-- various parts of the citation, but only when they are non-nil.
	local EditorCount;															-- used only for choosing {ed.) or (eds.) annotation at end of editor name-list
	do
		local last_first_list;
--		local maximum;
		local control = { 
			format = NameListFormat,											-- empty string or 'vanc'
			maximum = nil,														-- as if display-authors or display-editors not set
			lastauthoramp = LastAuthorAmp,
			page_name = this_page.text											-- get current page name so that we don't wikilink to it via editorlinkn
		};

		do																		-- do editor name list first because coauthors can modify control table
			control.maximum , editor_etal = get_display_authors_editors (A['DisplayEditors'], #e, 'editors', editor_etal);
			last_first_list, EditorCount = list_people(control, e, editor_etal, 'editor');

			if is_set (Editors) then
				if editor_etal then
					Editors = Editors .. ' ' .. cfg.messages['et al'];			-- add et al. to editors parameter beause |display-editors=etal
					EditorCount = 2;											-- with et al., |editors= is multiple names; spoof to display (eds.) annotation
				else
					EditorCount = 2;											-- we don't know but assume |editors= is multiple names; spoof to display (eds.) annotation
				end
			else
				Editors = last_first_list;										-- either an author name list or an empty string
			end

			if 1 == EditorCount and (true == editor_etal or 1 < #e) then		-- only one editor displayed but includes etal then 
				EditorCount = 2;												-- spoof to display (eds.) annotation
			end
		end
		do																		-- now do translators
			control.maximum = #t;												-- number of translators
			Translators = list_people(control, t, false, 'translator');			-- et al not currently supported
		end
		do																		-- now do contributors
			control.maximum = #c;												-- number of contributors
			Contributors = list_people(control, c, false, 'contributor');		-- et al not currently supported
		end
		do																		-- now do authors
			control.maximum , author_etal = get_display_authors_editors (A['DisplayAuthors'], #a, 'authors', author_etal);

			if is_set(Coauthors) then											-- if the coauthor field is also used, prevent ampersand and et al. formatting.
				control.lastauthoramp = nil;
				control.maximum = #a + 1;
			end
			
			last_first_list = list_people(control, a, author_etal, 'author');

			if is_set (Authors) then
				Authors, author_etal = name_has_etal (Authors, author_etal, false);	-- find and remove variations on et al.
				if author_etal then
					Authors = Authors .. ' ' .. cfg.messages['et al'];			-- add et al. to authors parameter
				end
			else
				Authors = last_first_list;										-- either an author name list or an empty string
			end
		end																		-- end of do
	
		if is_set (Authors) and is_set (Collaboration) then
			Authors = Authors .. ' (' .. Collaboration .. ')';					-- add collaboration after et al.
		end

		if not is_set(Authors) and is_set(Coauthors) then						-- coauthors aren't displayed if one of authors=, authorn=, or lastn= isn't specified
			table.insert( z.message_tail, { set_error('coauthors_missing_author', {}, true) } );	-- emit error message
		end
	end

-- apply |[xx-]format= styling; at the end, these parameters hold correctly styled format annotation,
-- an error message if the associated url is not set, or an empty string for concatenation
	ArchiveFormat = style_format (ArchiveFormat, ArchiveURL, 'archive-format', 'archive-url');
	ConferenceFormat = style_format (ConferenceFormat, ConferenceURL, 'conference-format', 'conference-url');
	Format = style_format (Format, URL, 'format', 'url');
	LayFormat = style_format (LayFormat, LayURL, 'lay-format', 'lay-url');
	TranscriptFormat = style_format (TranscriptFormat, TranscriptURL, 'transcript-format', 'transcripturl');

-- special case for chapter format so no error message or cat when chapter not supported
	if not (in_array(config.CitationClass, {'web','news','journal', 'magazine', 'pressrelease','podcast', 'newsgroup', 'arxiv'}) or
		('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia))) then
			ChapterFormat = style_format (ChapterFormat, ChapterURL, 'chapter-format', 'chapter-url');
	end

	if  not is_set(URL) then --and
		if in_array(config.CitationClass, {"web","podcast", "mailinglist"}) then		-- Test if cite web or cite podcast |url= is missing or empty 
			table.insert( z.message_tail, { set_error( 'cite_web_url', {}, true ) } );
		end
		
		-- Test if accessdate is given without giving a URL
		if is_set(AccessDate) and not is_set(ChapterURL)then					-- ChapterURL may be set when the others are not set; TODO: move this to a separate test?
			table.insert( z.message_tail, { set_error( 'accessdate_missing_url', {}, true ) } );
			AccessDate = '';
		end
	end

	local OriginalURL, OriginalURLorigin, OriginalFormat;						-- TODO: swap chapter and title here so that archive applies to most specific if both are set?
	DeadURL = DeadURL:lower();													-- used later when assembling archived text
	if is_set( ArchiveURL ) then
		if is_set (URL) then
			OriginalURL = URL;													-- save copy of original source URL
			OriginalURLorigin = URLorigin;										-- name of url parameter for error messages
			OriginalFormat = Format;											-- and original |format=
			if 'no' ~= DeadURL then												-- if URL set then archive-url applies to it
				URL = ArchiveURL												-- swap-in the archive's url
				URLorigin = A:ORIGIN('ArchiveURL')								-- name of archive url parameter for error messages
				Format = ArchiveFormat or '';									-- swap in archive's format
			end
		elseif is_set (ChapterURL) then 										-- URL not set so if chapter-url is set apply archive url to it
			OriginalURL = ChapterURL;											-- save copy of source chapter's url for archive text
			OriginalURLorigin = ChapterURLorigin;								-- name of chapter-url parameter for error messages
			OriginalFormat = ChapterFormat;										-- and original |format=
			if 'no' ~= DeadURL then
				ChapterURL = ArchiveURL											-- swap-in the archive's url
				ChapterURLorigin = A:ORIGIN('ArchiveURL')						-- name of archive-url parameter for error messages
				ChapterFormat = ArchiveFormat or '';							-- swap in archive's format
			end
		end
	end

	if in_array(config.CitationClass, {'web','news','journal', 'magazine', 'pressrelease','podcast', 'newsgroup', 'arxiv'}) or	-- if any of the 'periodical' cites except encyclopedia
		('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) then
			local chap_param;
			if is_set (Chapter) then											-- get a parameter name from one of these chapter related meta-parameters
				chap_param = A:ORIGIN ('Chapter')
			elseif is_set (TransChapter) then
				chap_param = A:ORIGIN ('TransChapter')
			elseif is_set (ChapterURL) then
				chap_param = A:ORIGIN ('ChapterURL')
			elseif is_set (ScriptChapter) then
				chap_param = A:ORIGIN ('ScriptChapter')
			else is_set (ChapterFormat)
				chap_param = A:ORIGIN ('ChapterFormat')
			end

			if is_set (chap_param) then											-- if we found one
				table.insert( z.message_tail, { set_error( 'chapter_ignored', {chap_param}, true ) } );		-- add error message
				Chapter = '';													-- and set them to empty string to be safe with concatenation
				TransChapter = '';
				ChapterURL = '';
				ScriptChapter = '';
				ChapterFormat = '';
			end
	else																		-- otherwise, format chapter / article title
		local no_quotes = false;												-- default assume that we will be quoting the chapter parameter value
		if is_set (Contribution) and 0 < #c then								-- if this is a contribution with contributor(s)
			if in_array (Contribution:lower(), cfg.keywords.contribution) then	-- and a generic contribution title
				no_quotes = true;												-- then render it unquoted
			end
		end

		Chapter = format_chapter_title (ScriptChapter, Chapter, TransChapter, ChapterURL, ChapterURLorigin, no_quotes);		-- Contribution is also in Chapter
		if is_set (Chapter) then
			if 'map' == config.CitationClass and is_set (TitleType) then
				Chapter = Chapter .. ' ' .. TitleType;
			end
			Chapter = Chapter .. ChapterFormat .. sepc .. ' ';
		elseif is_set (ChapterFormat) then										-- |chapter= not set but |chapter-format= is so ...
			Chapter = ChapterFormat .. sepc .. ' ';								-- ... ChapterFormat has error message, we want to see it
		end
	end

	-- Format main title.
	if is_set(TitleLink) and is_set(Title) then
		Title = "[[" .. TitleLink .. "|" .. Title .. "]]"
	end

	if in_array(config.CitationClass, {'web','news','journal', 'magazine', 'pressrelease','podcast', 'newsgroup', 'mailinglist', 'arxiv'}) or
		('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) or
		('map' == config.CitationClass and is_set (Periodical)) then			-- special case for cite map when the map is in a periodical treat as an article
			Title = kern_quotes (Title);										-- if necessary, separate title's leading and trailing quote marks from Module provided quote marks
			Title = wrap_style ('quoted-title', Title);
	
			Title = script_concatenate (Title, ScriptTitle);					-- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
			TransTitle= wrap_style ('trans-quoted-title', TransTitle );
	elseif 'report' == config.CitationClass then								-- no styling for cite report
		Title = script_concatenate (Title, ScriptTitle);						-- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
		TransTitle= wrap_style ('trans-quoted-title', TransTitle );				-- for cite report, use this form for trans-title
	else
		Title = wrap_style ('italic-title', Title);
		Title = script_concatenate (Title, ScriptTitle);						-- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
		TransTitle = wrap_style ('trans-italic-title', TransTitle);
	end

	local TransError = "";
	if is_set(TransTitle) then
		if is_set(Title) then
			TransTitle = " " .. TransTitle;
		else
			TransError = " " .. set_error( 'trans_missing_title', {'title'} );
		end
	end
	
	Title = Title .. TransTitle;
	
	if is_set(Title) then
		if not is_set(TitleLink) and is_set(URL) then 
			Title = external_link( URL, Title, URLorigin ) .. TransError .. Format;
			URL = "";
			Format = "";
		else
			Title = Title .. TransError;
		end
	end

	if is_set(Place) then
		Place = " " .. wrap_msg ('written', Place, use_lowercase) .. sepc .. " ";
	end

	if is_set (Conference) then
		if is_set (ConferenceURL) then
			Conference = external_link( ConferenceURL, Conference, ConferenceURLorigin );
		end
		Conference = sepc .. " " .. Conference .. ConferenceFormat;
	elseif is_set(ConferenceURL) then
		Conference = sepc .. " " .. external_link( ConferenceURL, nil, ConferenceURLorigin );
	end

	if not is_set(Position) then
		local Minutes = A['Minutes'];
		local Time = A['Time'];

		if is_set(Minutes) then
			if is_set (Time) then
				table.insert( z.message_tail, { set_error( 'redundant_parameters', {wrap_style ('parameter', 'minutes') .. ' and ' .. wrap_style ('parameter', 'time')}, true ) } );
			end
			Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
		else
			if is_set(Time) then
				local TimeCaption = A['TimeCaption']
				if not is_set(TimeCaption) then
					TimeCaption = cfg.messages['event'];
					if sepc ~= '.' then
						TimeCaption = TimeCaption:lower();
					end
				end
				Position = " " .. TimeCaption .. " " .. Time;
			end
		end
	else
		Position = " " .. Position;
		At = '';
	end

	Page, Pages, Sheet, Sheets = format_pages_sheets (Page, Pages, Sheet, Sheets, config.CitationClass, Periodical_origin, sepc, NoPP, use_lowercase);

	At = is_set(At) and (sepc .. " " .. At) or "";
	Position = is_set(Position) and (sepc .. " " .. Position) or "";
	if config.CitationClass == 'map' then
		local Section = A['Section'];
		local Sections = A['Sections'];
		local Inset = A['Inset'];
		
		if is_set( Inset ) then
			Inset = sepc .. " " .. wrap_msg ('inset', Inset, use_lowercase);
		end			

		if is_set( Sections ) then
			Section = sepc .. " " .. wrap_msg ('sections', Sections, use_lowercase);
		elseif is_set( Section ) then
			Section = sepc .. " " .. wrap_msg ('section', Section, use_lowercase);
		end
		At = At .. Inset .. Section;		
	end	

	if is_set (Language) then
		Language = language_parameter (Language);								-- format, categories, name from ISO639-1, etc
	else
		Language="";															-- language not specified so make sure this is an empty string;
	end

	Others = is_set(Others) and (sepc .. " " .. Others) or "";
	
	if is_set (Translators) then
		Others = sepc .. ' Translated by ' .. Translators .. Others; 
	end

	TitleNote = is_set(TitleNote) and (sepc .. " " .. TitleNote) or "";
	if is_set (Edition) then
		if Edition:match ('%f[%a][Ee]d%.?$') or Edition:match ('%f[%a][Ee]dition$') then
			add_maint_cat ('extra_text', 'edition');
		end
		Edition = " " .. wrap_msg ('edition', Edition);
	else
		Edition = '';
	end

	Series = is_set(Series) and (sepc .. " " .. Series) or "";
	OrigYear = is_set(OrigYear) and (" [" .. OrigYear .. "]") or "";
	Agency = is_set(Agency) and (sepc .. " " .. Agency) or "";

	Volume = format_volume_issue (Volume, Issue, config.CitationClass, Periodical_origin, sepc, use_lowercase);

	------------------------------------ totally unrelated data
	if is_set(Via) then
		Via = " " .. wrap_msg ('via', Via);
	end

--[[
Subscription implies paywall; Registration does not.  If both are used in a citation, the subscription required link
note is displayed. There are no error messages for this condition.

]]
	if is_set (SubscriptionRequired) then
		SubscriptionRequired = sepc .. " " .. cfg.messages['subscription'];		-- subscription required message
	elseif is_set (RegistrationRequired) then
		SubscriptionRequired = sepc .. " " .. cfg.messages['registration'];		-- registration required message
	else
		SubscriptionRequired = '';												-- either or both might be set to something other than yes true y
	end

	if is_set(AccessDate) then
		local retrv_text = " " .. cfg.messages['retrieved']

		AccessDate = nowrap_date (AccessDate);									-- wrap in nowrap span if date in appropriate format
		if (sepc ~= ".") then retrv_text = retrv_text:lower() end				-- if 'citation', lower case
		AccessDate = substitute (retrv_text, AccessDate);						-- add retrieved text
																				-- neither of these work; don't know why; it seems that substitute() isn't being called	
		AccessDate = substitute (cfg.presentation['accessdate'], {sepc, AccessDate});	-- allow editors to hide accessdates
	end
	
	if is_set(ID) then ID = sepc .." ".. ID; end
   	if "thesis" == config.CitationClass and is_set(Docket) then
		ID = sepc .." Docket ".. Docket .. ID;
	end
   	if "report" == config.CitationClass and is_set(Docket) then					-- for cite report when |docket= is set
		ID = sepc .. ' ' .. Docket;												-- overwrite ID even if |id= is set
	end

	ID_list = build_id_list( ID_list, {DoiBroken = DoiBroken, ASINTLD = ASINTLD, IgnoreISBN = IgnoreISBN, Embargo=Embargo, Class = Class} );

	if is_set(URL) then
		URL = " " .. external_link( URL, nil, URLorigin );
	end

	if is_set(Quote) then
		if Quote:sub(1,1) == '"' and Quote:sub(-1,-1) == '"' then				-- if first and last characters of quote are quote marks
			Quote = Quote:sub(2,-2);											-- strip them off
		end
		Quote = sepc .." " .. wrap_style ('quoted-text', Quote ); 				-- wrap in <q>...</q> tags
		PostScript = "";														-- cs1|2 does not supply terminal punctuation when |quote= is set
	end
	
	local Archived
	if is_set(ArchiveURL) then
		if not is_set(ArchiveDate) then
			ArchiveDate = set_error('archive_missing_date');
		end
		if "no" == DeadURL then
			local arch_text = cfg.messages['archived'];
			if sepc ~= "." then arch_text = arch_text:lower() end
			Archived = sepc .. " " .. substitute( cfg.messages['archived-not-dead'],
				{ external_link( ArchiveURL, arch_text, A:ORIGIN('ArchiveURL') ) .. ArchiveFormat, ArchiveDate } );
			if not is_set(OriginalURL) then
				Archived = Archived .. " " .. set_error('archive_missing_url');							   
			end
		elseif is_set(OriginalURL) then											-- DeadURL is empty, 'yes', 'true', 'y', 'unfit', 'usurped'
			local arch_text = cfg.messages['archived-dead'];
			if sepc ~= "." then arch_text = arch_text:lower() end
			if in_array (DeadURL, {'unfit', 'usurped'}) then
				Archived = sepc .. " " .. 'Archived from the original on ' .. ArchiveDate;	-- format already styled
			else																-- DeadURL is empty, 'yes', 'true', or 'y'
				Archived = sepc .. " " .. substitute( arch_text,
					{ external_link( OriginalURL, cfg.messages['original'], OriginalURLorigin ) .. OriginalFormat, ArchiveDate } );	-- format already styled
			end	
		else
			local arch_text = cfg.messages['archived-missing'];
			if sepc ~= "." then arch_text = arch_text:lower() end
			Archived = sepc .. " " .. substitute( arch_text, 
				{ set_error('archive_missing_url'), ArchiveDate } );
		end
	elseif is_set (ArchiveFormat) then
		Archived = ArchiveFormat;												-- if set and ArchiveURL not set ArchiveFormat has error message
	else
		Archived = ""
	end
	
	local Lay = '';
	if is_set(LayURL) then
		if is_set(LayDate) then LayDate = " (" .. LayDate .. ")" end
		if is_set(LaySource) then 
			LaySource = " &ndash; ''" .. safe_for_italics(LaySource) .. "''";
		else
			LaySource = "";
		end
		if sepc == '.' then
			Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary'], A:ORIGIN('LayURL') ) .. LayFormat .. LaySource .. LayDate
		else
			Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary']:lower(), A:ORIGIN('LayURL') ) .. LayFormat .. LaySource .. LayDate
		end			
	elseif is_set (LayFormat) then												-- Test if |lay-format= is given without giving a |lay-url=
		Lay = sepc .. LayFormat;												-- if set and LayURL not set, then LayFormat has error message
	end

	if is_set(Transcript) then
		if is_set(TranscriptURL) then
			Transcript = external_link( TranscriptURL, Transcript, TranscriptURLorigin );
		end
		Transcript = sepc .. ' ' .. Transcript .. TranscriptFormat;
	elseif is_set(TranscriptURL) then
		Transcript = external_link( TranscriptURL, nil, TranscriptURLorigin );
	end

	local Publisher;
	if is_set(Periodical) and
		not in_array(config.CitationClass, {"encyclopaedia","web","pressrelease","podcast"}) then
		if is_set(PublisherName) then
			if is_set(PublicationPlace) then
				Publisher = PublicationPlace .. ": " .. PublisherName;
			else
				Publisher = PublisherName;  
			end
		elseif is_set(PublicationPlace) then
			Publisher= PublicationPlace;
		else 
			Publisher = "";
		end
		if is_set(PublicationDate) then
			if is_set(Publisher) then
				Publisher = Publisher .. ", " .. wrap_msg ('published', PublicationDate);
			else
				Publisher = PublicationDate;
			end
		end
		if is_set(Publisher) then
			Publisher = " (" .. Publisher .. ")";
		end
	else
		if is_set(PublicationDate) then
			PublicationDate = " (" .. wrap_msg ('published', PublicationDate) .. ")";
		end
		if is_set(PublisherName) then
			if is_set(PublicationPlace) then
				Publisher = sepc .. " " .. PublicationPlace .. ": " .. PublisherName .. PublicationDate;
			else
				Publisher = sepc .. " " .. PublisherName .. PublicationDate;  
			end			
		elseif is_set(PublicationPlace) then 
			Publisher= sepc .. " " .. PublicationPlace .. PublicationDate;
		else 
			Publisher = PublicationDate;
		end
	end
	
	-- Several of the above rely upon detecting this as nil, so do it last.
	if is_set(Periodical) then
		if is_set(Title) or is_set(TitleNote) then 
			Periodical = sepc .. " " .. wrap_style ('italic-title', Periodical) 
		else 
			Periodical = wrap_style ('italic-title', Periodical)
		end
	end

--[[
Handle the oddity that is cite speech.  This code overrides whatever may be the value assigned to TitleNote (through |department=) and forces it to be " (Speech)" so that
the annotation directly follows the |title= parameter value in the citation rather than the |event= parameter value (if provided).
]]
	if "speech" == config.CitationClass then				-- cite speech only
		TitleNote = " (Speech)";							-- annotate the citation
		if is_set (Periodical) then							-- if Periodical, perhaps because of an included |website= or |journal= parameter 
			if is_set (Conference) then						-- and if |event= is set
				Conference = Conference .. sepc .. " ";		-- then add appropriate punctuation to the end of the Conference variable before rendering
			end
		end
	end

	-- Piece all bits together at last.  Here, all should be non-nil.
	-- We build things this way because it is more efficient in LUA
	-- not to keep reassigning to the same string variable over and over.

	local tcommon;
	local tcommon2;																-- used for book cite when |contributor= is set
	
	if in_array(config.CitationClass, {"journal","citation"}) and is_set(Periodical) then
		if is_set(Others) then Others = Others .. sepc .. " " end
		tcommon = safe_join( {Others, Title, TitleNote, Conference, Periodical, Format, TitleType, Series, 
			Language, Edition, Publisher, Agency, Volume}, sepc );
		
	elseif in_array(config.CitationClass, {"book","citation"}) and not is_set(Periodical) then		-- special cases for book cites
		if is_set (Contributors) then											-- when we are citing foreword, preface, introduction, etc
			tcommon = safe_join( {Title, TitleNote}, sepc );					-- author and other stuff will come after this and before tcommon2
			tcommon2 = safe_join( {Conference, Periodical, Format, TitleType, Series, Language, Volume, Others, Edition, Publisher, Agency}, sepc );
		else
			tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language, Volume, Others, Edition, Publisher, Agency}, sepc );
		end

	elseif 'map' == config.CitationClass then									-- special cases for cite map
		if is_set (Chapter) then												-- map in a book; TitleType is part of Chapter
			tcommon = safe_join( {Title, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher, Volume}, sepc );
		elseif is_set (Periodical) then											-- map in a periodical
			tcommon = safe_join( {Title, TitleType, Format, Periodical, Scale, Series, Language, Cartography, Others, Publisher, Volume}, sepc );
		else																	-- a sheet or stand-alone map
			tcommon = safe_join( {Title, TitleType, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher}, sepc );
		end
		
	elseif 'episode' == config.CitationClass then								-- special case for cite episode
		tcommon = safe_join( {Title, TitleNote, TitleType, Series, Transcript, Language, Edition, Publisher}, sepc );
	else																		-- all other CS1 templates
		tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language, 
			Volume, Others, Edition, Publisher, Agency}, sepc );
	end
	
	if #ID_list > 0 then
		ID_list = safe_join( { sepc .. " ",  table.concat( ID_list, sepc .. " " ), ID }, sepc );
	else
		ID_list = ID;
	end
	
	local idcommon = safe_join( { ID_list, URL, Archived, AccessDate, Via, SubscriptionRequired, Lay, Quote }, sepc );
	local text;
	local pgtext = Position .. Sheet .. Sheets .. Page .. Pages .. At;

	if is_set(Date) then
		if is_set (Authors) or is_set (Editors) then							-- date follows authors or editors when authors not set
			Date = " (" .. Date ..")" .. OrigYear .. sepc .. " ";				-- in paranetheses
		else																	-- neither of authors and editors set
			if (string.sub(tcommon,-1,-1) == sepc) then							-- if the last character of tcommon is sepc
				Date = " " .. Date .. OrigYear;									-- Date does not begin with sepc
			else
				Date = sepc .. " " .. Date .. OrigYear;							-- Date begins with sepc
			end
		end
	end	
	if is_set(Authors) then
		if is_set(Coauthors) then
			if 'vanc' == NameListFormat then									-- separate authors and coauthors with proper name-list-separator
				Authors = Authors .. ', ' .. Coauthors;
			else
				Authors = Authors .. '; ' .. Coauthors;
			end
		end
		if not is_set (Date) then												-- when date is set it's in parentheses; no Authors termination
			Authors = terminate_name_list (Authors, sepc);						-- when no date, terminate with 0 or 1 sepc and a space
		end
		if is_set(Editors) then
			local in_text = " ";
			local post_text = "";
			if is_set(Chapter) and 0 == #c then
				in_text = in_text .. cfg.messages['in'] .. " "
				if (sepc ~= '.') then in_text = in_text:lower() end				-- lowercase for cs2
			else
				if EditorCount <= 1 then
					post_text = ", " .. cfg.messages['editor'];
				else
					post_text = ", " .. cfg.messages['editors'];
				end
			end 
			Editors = terminate_name_list (in_text .. Editors .. post_text, sepc);	-- terminate with 0 or 1 sepc and a space
		end
		if is_set (Contributors) then											-- book cite and we're citing the intro, preface, etc
			local by_text = sepc .. ' ' .. cfg.messages['by'] .. ' ';
			if (sepc ~= '.') then by_text = by_text:lower() end					-- lowercase for cs2
			Authors = by_text .. Authors;										-- author follows title so tweak it here
			if is_set (Editors) then											-- when Editors make sure that Authors gets terminated
				Authors = terminate_name_list (Authors, sepc);					-- terminate with 0 or 1 sepc and a space
			end
			if not is_set (Date) then											-- when date is set it's in parentheses; no Contributors termination
				Contributors = terminate_name_list (Contributors, sepc);		-- terminate with 0 or 1 sepc and a space
			end
			text = safe_join( {Contributors, Date, Chapter, tcommon, Authors, Place, Editors, tcommon2, pgtext, idcommon }, sepc );
		else
			text = safe_join( {Authors, Date, Chapter, Place, Editors, tcommon, pgtext, idcommon }, sepc );
		end
	elseif is_set(Editors) then
		if is_set(Date) then
			if EditorCount <= 1 then
				Editors = Editors .. ", " .. cfg.messages['editor'];
			else
				Editors = Editors .. ", " .. cfg.messages['editors'];
			end
		else
			if EditorCount <= 1 then
				Editors = Editors .. " (" .. cfg.messages['editor'] .. ")" .. sepc .. " "
			else
				Editors = Editors .. " (" .. cfg.messages['editors'] .. ")" .. sepc .. " "
			end
		end
		text = safe_join( {Editors, Date, Chapter, Place, tcommon, pgtext, idcommon}, sepc );
	else
		if config.CitationClass=="journal" and is_set(Periodical) then
			text = safe_join( {Chapter, Place, tcommon, pgtext, Date, idcommon}, sepc );
		else
			text = safe_join( {Chapter, Place, tcommon, Date, pgtext, idcommon}, sepc );
		end
	end
	
	if is_set(PostScript) and PostScript ~= sepc then
		text = safe_join( {text, sepc}, sepc );  --Deals with italics, spaces, etc.
		text = text:sub(1,-sepc:len()-1);
	end	
	
	text = safe_join( {text, PostScript}, sepc );

	-- Now enclose the whole thing in a <cite/> element
	local options = {};
	
	if is_set(config.CitationClass) and config.CitationClass ~= "citation" then
		options.class = config.CitationClass;
		options.class = "citation " .. config.CitationClass;					-- class=citation required for blue highlight when used with |ref=
	else
		options.class = "citation";
	end
	
	if is_set(Ref) and Ref:lower() ~= "none" then								-- set reference anchor if appropriate
		local id = Ref
		if ('harv' == Ref ) then
			local namelist = {};												-- holds selected contributor, author, editor name list
			local year = first_set ({Year, anchor_year}, 2);					-- Year first for legacy citations and for YMD dates that require disambiguation

			if #c > 0 then														-- if there is a contributor list
				namelist = c;													-- select it
			elseif #a > 0 then													-- or an author list
				namelist = a;
			elseif #e > 0 then													-- or an editor list
				namelist = e;
			end
			id = anchor_id (namelist, year);									-- go make the CITEREF anchor
		end
		options.id = id;
	end
	
	if string.len(text:gsub("<span[^>/]*>.-</span>", ""):gsub("%b<>","")) <= 2 then
		z.error_categories = {};
		text = set_error('empty_citation');
		z.message_tail = {};
	end
	
	if is_set(options.id) then 
		text = '<cite id="' .. mw.uri.anchorEncode(options.id) ..'" class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</cite>";
	else
		text = '<cite class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</cite>";
	end		

	local empty_span = '<span style="display:none;">&nbsp;</span>';
	
	-- Note: Using display: none on the COinS span breaks some clients.
	local OCinS = '<span title="' .. OCinSoutput .. '" class="Z3988">' .. empty_span .. '</span>';
	text = text .. OCinS;
	
	if #z.message_tail ~= 0 then
		text = text .. " ";
		for i,v in ipairs( z.message_tail ) do
			if is_set(v[1]) then
				if i == #z.message_tail then
					text = text .. error_comment( v[1], v[2] );
				else
					text = text .. error_comment( v[1] .. "; ", v[2] );
				end
			end
		end
	end

	if #z.maintenance_cats ~= 0 then
		text = text .. '<span class="citation-comment" style="display:none; color:#33aa33">';
		for _, v in ipairs( z.maintenance_cats ) do								-- append maintenance categories
			text = text .. ' ' .. v .. ' ([[:Category:' .. v ..'|link]])';
		end
		text = text .. '</span>';	-- maintenance mesages (realy just the names of the categories for now)
	end
	
	no_tracking_cats = no_tracking_cats:lower();
	if in_array(no_tracking_cats, {"", "no", "false", "n"}) then
		for _, v in ipairs( z.error_categories ) do
			text = text .. '[[Category:' .. v ..']]';
		end
		for _, v in ipairs( z.maintenance_cats ) do								-- append maintenance categories
			text = text .. '[[Category:' .. v ..']]';
		end
		for _, v in ipairs( z.properties_cats ) do								-- append maintenance categories
			text = text .. '[[Category:' .. v ..']]';
		end
	end
	
	return text
end

--[[--------------------------< C S 1 . C I T A T I O N >------------------------------------------------------

This is used by templates such as {{cite book}} to create the actual citation text.

]]

function cs1.citation(frame)
	local pframe = frame:getParent()
	local validation, utilities, identifiers, metadata;
	
	if nil ~= string.find (frame:getTitle(), 'sandbox', 1, true) then			-- did the {{#invoke:}} use sandbox version?
		cfg = mw.loadData ('Module:Citation/CS1/Configuration/sandbox');		-- load sandbox versions of support modules
		whitelist = mw.loadData ('Module:Citation/CS1/Whitelist/sandbox');
		utilities = require ('Module:Citation/CS1/Utilities/sandbox');
		validation = require ('Module:Citation/CS1/Date_validation/sandbox');
		identifiers = require ('Module:Citation/CS1/Identifiers/sandbox');
		metadata = require ('Module:Citation/CS1/COinS/sandbox');
		
	else																		-- otherwise
		cfg = mw.loadData ('Module:Citation/CS1/Configuration');				-- load live versions of support modules
		whitelist = mw.loadData ('Module:Citation/CS1/Whitelist');
		utilities = require ('Module:Citation/CS1/Utilities');
		validation = require ('Module:Citation/CS1/Date_validation');
		identifiers = require ('Module:Citation/CS1/Identifiers');
		metadata = require ('Module:Citation/CS1/COinS');
	end

	utilities.set_selected_modules (cfg);										-- so that functions in Utilities can see the cfg tables
	identifiers.set_selected_modules (cfg, utilities);							-- so that functions in Identifiers can see the selected cfg tables and selected Utilities module
	validation.set_selected_modules (utilities);								-- so that functions in Date validataion can see the selected Utilities module
	metadata.set_selected_modules (cfg, utilities);								-- so that functions in COinS can see the selected cfg tables and selected Utilities module

	dates = validation.dates;													-- imported functions from Module:Citation/CS1/Date validation
	year_date_check = validation.year_date_check;
	reformat_dates = validation.reformat_dates;
	
	is_set = utilities.is_set;													-- imported functions from Module:Citation/CS1/Utilities
	in_array = utilities.in_array;
	substitute = utilities.substitute;
	error_comment = utilities.error_comment;
	set_error = utilities.set_error;
	select_one = utilities.select_one;
	add_maint_cat = utilities.add_maint_cat;
	wrap_style = utilities.wrap_style;
	safe_for_italics = utilities.safe_for_italics;
	remove_wiki_link = utilities.remove_wiki_link;

	z = utilities.z;															-- table of error and category tables in Module:Citation/CS1/Utilities

	extract_ids = identifiers.extract_ids;										-- imported functions from Module:Citation/CS1/Utilities
	build_id_list = identifiers.build_id_list;
	is_embargoed = identifiers.is_embargoed;
	
	make_coins_title = metadata.make_coins_title;								-- imported functions from Module:Citation/CS1/COinS
	get_coins_pages = metadata.get_coins_pages;
	COinS = metadata.COinS;

	
	local args = {};
	local suggestions = {};
	local error_text, error_state;

	local config = {};
	for k, v in pairs( frame.args ) do
		config[k] = v;
		args[k] = v;	   
	end	

	local capture;																-- the single supported capture when matching unknown parameters using patterns
	for k, v in pairs( pframe.args ) do
		if v ~= '' then
			if not validate( k ) then			
				error_text = "";
				if type( k ) ~= 'string' then
					-- Exclude empty numbered parameters
					if v:match("%S+") ~= nil then
						error_text, error_state = set_error( 'text_ignored', {v}, true );
					end
				elseif validate( k:lower() ) then 
					error_text, error_state = set_error( 'parameter_ignored_suggest', {k, k:lower()}, true );
				else
					if nil == suggestions.suggestions then						-- if this table is nil then we need to load it
						if nil ~= string.find (frame:getTitle(), 'sandbox', 1, true) then			-- did the {{#invoke:}} use sandbox version?
							suggestions = mw.loadData( 'Module:Citation/CS1/Suggestions/sandbox' );	-- use the sandbox version
						else
							suggestions = mw.loadData( 'Module:Citation/CS1/Suggestions' );			-- use the live version
						end
					end
					for pattern, param in pairs (suggestions.patterns) do		-- loop through the patterns to see if we can suggest a proper parameter
						capture = k:match (pattern);							-- the whole match if no caputre in pattern else the capture if a match
						if capture then											-- if the pattern matches 
							param = substitute( param, capture );				-- add the capture to the suggested parameter (typically the enumerator)
							error_text, error_state = set_error( 'parameter_ignored_suggest', {k, param}, true );	-- set the error message
						end
					end
					if not is_set (error_text) then								-- couldn't match with a pattern, is there an expicit suggestion?
						if suggestions.suggestions[ k:lower() ] ~= nil then
							error_text, error_state = set_error( 'parameter_ignored_suggest', {k, suggestions.suggestions[ k:lower() ]}, true );
						else
							error_text, error_state = set_error( 'parameter_ignored', {k}, true );
						end
					end
				end				  
				if error_text ~= '' then
					table.insert( z.message_tail, {error_text, error_state} );
				end				
			end
			args[k] = v;
		elseif args[k] ~= nil or (k == 'postscript') then
			args[k] = v;
		end		
	end	

	for k, v in pairs( args ) do
		if 'string' == type (k) then											-- don't evaluate positional parameters
			has_invisible_chars (k, v);
		end
	end
	return citation0( config, args)
end

return cs1;