Difference between revisions of "Module:Citation/CS1"

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(Synch from sandbox;)
(Synch from sandbox;)
Line 8: Line 8:
 
}
 
}
  
-- Whether variable is set or not
+
--[[--------------------------< 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
 +
 
 +
--[[--------------------------< I S _ S E T >------------------------------------------------------------------
 +
 
 +
Returns true if argument is set; false otherwise. Argument is 'set' when it exists (not nil) or when it is not an empty string.
 +
This function is global because it is called from both this module and from Date validation
 +
 
 +
]]
 
function is_set( var )
 
function is_set( var )
 
return not (var == nil or var == '');
 
return not (var == nil or var == '');
 
end
 
end
  
-- First set variable or nil if none
+
--[[--------------------------< F I R S T _ S E T >------------------------------------------------------------
function first_set(...)
+
 
 +
First set variable or nil if none
 +
 
 +
]]
 +
 
 +
local function first_set(...)
 
local list = {...};
 
local list = {...};
 
for _, var in pairs(list) do
 
for _, var in pairs(list) do
Line 23: Line 37:
 
end
 
end
  
-- Whether needle is in haystack
+
--[[--------------------------< I N _ A R R A Y >--------------------------------------------------------------
function inArray( needle, haystack )
+
 
 +
Whether needle is in haystack
 +
 
 +
]]
 +
 
 +
local function in_array( needle, haystack )
 
if needle == nil then
 
if needle == nil then
 
return false;
 
return false;
Line 36: Line 55:
 
end
 
end
  
--[[
+
--[[--------------------------< S U B S T I T U T E >----------------------------------------------------------
Categorize and emit an error message when the citation contains one or more deprecated parameters. Because deprecated parameters (currently |month=,
+
 
|coauthor=, and |coauthors=) aren't related to each other and because these parameters may be concatenated into the variables used by |date= and |author#= (and aliases)
+
Populates numbered arguments in a message string using an argument table.
details of which parameter caused the error message are not provided.  Only one error message is emitted regardless of the number of deprecated parameters in the citation.
+
 
 
]]
 
]]
function deprecated_parameter(name)
 
if true ~= Page_in_deprecated_cat then -- if we haven't been here before then set a
 
Page_in_deprecated_cat=true; -- sticky flag so that if there are more than one deprecated parameter the category is added only once
 
table.insert( z.message_tail, { seterror( 'deprecated_params', {name}, true ) } ); -- add error message
 
end
 
end
 
  
-- Populates numbered arguments in a message string using an argument table.
+
local function substitute( msg, args )
function substitute( msg, args )
 
 
return args and mw.message.newRawMessage( msg, args ):plain() or msg;
 
return args and mw.message.newRawMessage( msg, args ):plain() or msg;
 
end
 
end
  
--[[--------------------------< K E R N _ Q U O T E S >--------------------------------------------------------
+
--[[--------------------------< E R R O R _ C O M M E N T >----------------------------------------------------
  
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.
+
Wraps error messages with css markup according to the state of hidden.
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 error_comment( content, hidden )
function kern_quotes (str)
+
return substitute( hidden and cfg.presentation['hidden-error'] or cfg.presentation['visible-error'], content );
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
 
end
  
--[[--------------------------< F O R M A T _ S C R I P T _ V A L U E >----------------------------------------
+
--[[--------------------------< S E T _ E R R O R >--------------------------------------------------------------
  
|script-title= holds title parameters that are not written in Latin based scripts: Chinese, Japanese, Arabic, Hebrew, etc. These scripts should
+
Sets an error condition and returns the appropriate error message.  The actual placement of the error message in the output is
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
+
the responsibility of the calling function.
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.
+
]]
 
+
local function set_error( error_id, arguments, raw, prefix, suffix )
|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:
+
local error_state = cfg.error_conditions[ error_id ];
|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:
+
prefix = prefix or "";
|script-title=ja : *** ***
+
suffix = suffix or "";
|script-title=ja: *** ***
+
|script-title=ja :*** ***
+
if error_state == nil then
Spaces preceding the prefix are allowed: |script-title = ja:*** ***
+
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
 +
 
 +
--[[--------------------------< C H E C K _ U R L >------------------------------------------------------------
  
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
+
Determines whether a URL string is valid.
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.
 
  
At this writing, only |script-title= is supported.  It is anticipated that additional parameters will be created to use this function.
+
At present the only check is whether the string appears to be prefixed with a URI scheme.  It is not determined whether
 +
the URI scheme is valid or whether the URL is otherwise well formed.
  
TODO: error messages when prefix is invalid ISO639-1 code; when script_value has prefix but no script;
 
 
]]
 
]]
  
function format_script_value (script_value)
+
local function check_url( url_str )
local lang=''; -- initialize to empty string
+
return url_str:sub(1,2) == "//" or url_str:match( "^[^/]*:" ) ~= nil; -- Protocol-relative or URL scheme
local name;
+
end
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
+
--[[--------------------------< S A F E _ F O R _ I T A L I C S >----------------------------------------------
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 inArray (lang, {'ar', 'bs', 'dv', 'el', 'fa', 'hy', 'ja', 'ko', 'ku', 'he', 'ps', 'ru', 'sd', 'sr', 'th', 'uk', 'ug', 'yi', 'zh'}) then
 
table.insert( z.properties_cats, 'CS1 uses ' .. name .. '-language script ('..lang..')'); -- categorize in language-specific categories
 
else
 
table.insert( z.properties_cats, 'CS1 uses foreign language script'); -- use this category as a catchall until language-specific category is available
 
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;
+
Protects a string that will be wrapped in wiki italic markup '' ... ''
end
 
  
--[[--------------------------< S C R I P T _ C O N C A T E N A T E >------------------------------------------
+
Note: We cannot use <i> for italics, as the expected behavior for italics specified by ''...'' in the title is that
 +
they will be inverted (i.e. unitalicized) in the resulting references.  In addition, <i> and '' tend to interact
 +
poorly under Mediawiki's HTML tidy.
  
Initially for |title= and |script-title=, this function concatenates those two parameter values after the script value has been
 
wrapped in <bdi> tags.
 
 
]]
 
]]
  
function script_concatenate (title, script)
+
local function safe_for_italics( str )
if is_set (script) then
+
if not is_set(str) then
script = format_script_value (script); -- <bdi> tags, lang atribute, categorization, etc; returns empty string on error
+
return str;
if is_set (script) then
+
else
title = title .. ' ' .. script; -- concatenate title and script title
+
if str:sub(1,1) == "'" then str = "<span />" .. str; end
end
+
if str:sub(-1,-1) == "'" then str = str .. "<span />"; end
 +
 +
-- Remove newlines as they break italics.
 +
return str:gsub( '\n', ' ' );
 
end
 
end
return title;
 
 
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
  
 
--[[--------------------------< W R A P _ S T Y L E >----------------------------------------------------------
 
--[[--------------------------< W R A P _ S T Y L E >----------------------------------------------------------
Line 159: Line 173:
 
]]
 
]]
  
function wrap_style (key, str)
+
local function wrap_style (key, str)
 
if not is_set( str ) then
 
if not is_set( str ) then
 
return "";
 
return "";
elseif inArray( key, { 'italic-title', 'trans-italic-title' } ) then
+
elseif in_array( key, { 'italic-title', 'trans-italic-title' } ) then
str = safeforitalics( str );
+
str = safe_for_italics( str );
 
end
 
end
  
Line 169: Line 183:
 
end
 
end
  
 +
--[[--------------------------< E X T E R N A L _ L I N K >----------------------------------------------------
  
--[[--------------------------< W R A P _ M S G >--------------------------------------------------------------
+
Format an external link with error checking
 
 
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().
 
  
 
]]
 
]]
  
function wrap_msg (key, str, lower)
+
local function external_link( URL, label, source )
if not is_set( str ) then
+
local error_str = "";
return "";
+
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
 
end
if true == lower then
+
if not check_url( URL ) then
local msg;
+
error_str = set_error( 'bad_url', {}, false, " " ) .. error_str;
msg = cfg.messages[key]:lower(); -- set the message to lower case before
+
end
str = substitute( msg, {str} ); -- including template text
+
return table.concat({ "[", URL, " ", safe_for_url( label ), "]", error_str });
return str;
 
else
 
return substitute( cfg.messages[key], {str} );
 
end
 
 
end
 
end
  
--[[--------------------------< F O R M A T _ C H A P T E R _ T I T L E >--------------------------------------
+
--[[--------------------------< E X T E R N A L _ L I N K _ I D >----------------------------------------------
  
Format the three chapter parameters: |chapter=, |trans-chapter=, and |chapter-url= into a single Chapter meta-
+
Formats a wiki style external link
parameter (chapter_url_source used for error messages).
 
  
 
]]
 
]]
  
function format_chapter_title (chapter, transchapter, chapterurl, chapter_url_source)
+
local function external_link_id(options)
local chapter_error = '';
+
local url_string = options.id;
+
if options.encode == true or options.encode == nil then
if not is_set (chapter) then
+
url_string = mw.uri.encode( url_string );
chapter = ''; -- just to be safe for concatenation
+
end
if is_set (transchapter) then
+
return mw.ustring.format( '[[%s|%s]]%s[%s%s%s %s]',
chapter = wrap_style ('trans-quoted-title', transchapter);
+
options.link, options.label, options.separator or "&nbsp;",
chapter_error = " " .. seterror ('trans_missing_chapter');
+
options.prefix, url_string, options.suffix or "",
end
+
mw.text.nowiki(options.id)
if is_set (chapterurl) then
+
);
chapter = externallink (chapterurl, chapter, chapter_url_source); -- adds bare_url_missing_title error if appropriate
+
end
end
+
 
return chapter .. chapter_error;
+
--[[
else -- here when chapter is set
+
Categorize and emit an error message when the citation contains one or more deprecated parameters.  Because deprecated parameters (currently |month=,
chapter = kern_quotes (chapter); -- if necessary, separate chapter title's leading and trailing quote marks from Module provided quote marks
+
|coauthor=, and |coauthors=) aren't related to each other and because these parameters may be concatenated into the variables used by |date= and |author#= (and aliases)
chapter = wrap_style ('quoted-title', chapter);
+
details of which parameter caused the error message are not provided.  Only one error message is emitted regardless of the number of deprecated parameters in the citation.
if is_set (transchapter) then
+
]]
transchapter = wrap_style ('trans-quoted-title', transchapter);
+
local function deprecated_parameter(name)
chapter = chapter .. ' ' .. transchapter;
+
if true ~= Page_in_deprecated_cat then -- if we haven't been here before then set a
end
+
Page_in_deprecated_cat=true; -- sticky flag so that if there are more than one deprecated parameter the category is added only once
if is_set (chapterurl) then
+
table.insert( z.message_tail, { set_error( 'deprecated_params', {name}, true ) } ); -- add error message
chapter = externallink (chapterurl, chapter); -- adds bare_url_missing_title error if appropriate
 
end
 
 
end
 
end
return chapter;
 
 
end
 
end
  
--[[
+
--[[--------------------------< K E R N _ Q U O T E S >--------------------------------------------------------
Argument wrapper. This function provides support for argument
+
 
mapping defined in the configuration file so that multiple names
+
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.
can be transparently aliased to single internal variable.
+
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.
 +
 
 
]]
 
]]
function argument_wrapper( args )
+
 
local origin = {};
+
local function kern_quotes (str)
 +
local cap='';
 +
local cap2='';
 
 
return setmetatable({
+
cap, cap2 = str:match ("^([\"\'])([^\'].+)"); -- match leading double or single quote but not double single quotes
ORIGIN = function( self, k )
+
if is_set (cap) then
local dummy = self[k]; --force the variable to be loaded.
+
str = substitute (cfg.presentation['kern-left'], {cap, cap2});
return origin[k];
+
end
end
+
 
},
+
cap, cap2 = str:match ("^(.+[^\'])([\"\'])$")
{
+
if is_set (cap) then
__index = function ( tbl, k )
+
str = substitute (cfg.presentation['kern-right'], {cap, cap2});
if origin[k] ~= nil then
+
end
return nil;
+
return str;
end
+
end
+
 
local args, list, v = args, cfg.aliases[k];
+
--[[--------------------------< F O R M A T _ S C R I P T _ V A L U E >----------------------------------------
+
 
if type( list ) == 'table' then
+
|script-title= holds title parameters that are not written in Latin based scripts: Chinese, Japanese, Arabic, Hebrew, etc. These scripts should
v, origin[k] = selectone( args, list, 'redundant_parameters' );
+
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
if origin[k] == nil then
+
in italic markup.
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
 
  
--[[
+
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.
Looks for a parameter's name in the whitelist.
 
  
Parameters in the whitelist can have three values:
+
|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:
true - active, supported parameters
+
|script-title=ja:*** *** (where * represents a Japanese character)
false - deprecated, supported parameters
+
Spaces between the two-character code and the colon and the colon and the first script character are allowed:
nil - unsupported parameters
+
|script-title=ja : *** ***
]]
+
|script-title=ja: *** ***
function validate( name )
+
|script-title=ja :*** ***
local name = tostring( name );
+
Spaces preceding the prefix are allowed: |script-title = ja:*** ***
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
 
  
--[[--------------------------< E R R O R C O M M E N T >------------------------------------------------------
+
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.
  
Wraps error messages with css markup according to the state of hidden.
+
At this writing, only |script-title= is supported.  It is anticipated that additional parameters will be created to use this function.
  
 +
TODO: error messages when prefix is invalid ISO639-1 code; when script_value has prefix but no script;
 
]]
 
]]
function errorcomment( content, hidden )
+
 
return substitute( hidden and cfg.presentation['hidden-error'] or cfg.presentation['visible-error'], content );
+
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, {'ar', 'bg', 'bs', 'dv', 'el', 'fa', 'hy', 'ja', 'ka', 'ko', 'ku', 'he', 'ps', 'ru', 'sd', 'sr', 'th', 'uk', 'ug', 'yi', 'zh'}) then
 +
table.insert( z.properties_cats, 'CS1 uses ' .. name .. '-language script ('..lang..')'); -- categorize in language-specific categories
 +
else
 +
table.insert( z.properties_cats, 'CS1 uses foreign language script'); -- use this category as a catchall until language-specific category is available
 +
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
 
end
  
--[[
+
--[[--------------------------< S C R I P T _ C O N C A T E N A T E >------------------------------------------
Sets an error condition and returns the appropriate error message.  The actual placement
+
 
of the error message in the output is the responsibility of the calling function.
+
Initially for |title= and |script-title=, this function concatenates those two parameter values after the script value has been
 +
wrapped in <bdi> tags.
 
]]
 
]]
function seterror( error_id, arguments, raw, prefix, suffix )
+
 
local error_state = cfg.error_conditions[ error_id ];
+
local function script_concatenate (title, script)
+
if is_set (script) then
prefix = prefix or "";
+
script = format_script_value (script); -- <bdi> tags, lang atribute, categorization, etc; returns empty string on error
suffix = suffix or "";
+
if is_set (script) then
+
title = title .. ' ' .. script; -- concatenate title and script title
if error_state == nil then
+
end
error( cfg.messages['undefined_error'] );
 
elseif is_set( error_state.category ) then
 
table.insert( z.error_categories, error_state.category );
 
 
end
 
end
+
return title;
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 inArray( 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 errorcomment( message, error_state.hidden );
 
 
end
 
end
  
-- Formats a wiki style external link
+
 
function externallinkid(options)
+
--[[--------------------------< W R A P _ M S G >--------------------------------------------------------------
local url_string = options.id;
+
 
if options.encode == true or options.encode == nil then
+
Applies additional message text to various parameter values. Supplied string is wrapped using a message_list
url_string = mw.uri.encode( url_string );
+
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
 
end
return mw.ustring.format( '[[%s|%s]]%s[%s%s%s %s]',
+
if true == lower then
options.link, options.label, options.separator or "&nbsp;",
+
local msg;
options.prefix, url_string, options.suffix or "",
+
msg = cfg.messages[key]:lower(); -- set the message to lower case before
mw.text.nowiki(options.id)
+
str = substitute( msg, {str} ); -- including template text
);
+
return str;
 +
else
 +
return substitute( cfg.messages[key], {str} );
 +
end
 
end
 
end
 +
--[[--------------------------< S E L E C T _ O N E >----------------------------------------------------------
  
-- Formats a wiki style internal link
+
Chooses one matching parameter from a list of parameters to consider
function internallinkid(options)
+
Generates an error if more than one match is present.
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
 
  
-- Format an external link with error checking
+
]]
function externallink( URL, label, source )
 
local error_str = "";
 
if not is_set( label ) then
 
label = URL;
 
if is_set( source ) then
 
error_str = seterror( 'bare_url_missing_title', { wrap_style ('parameter', source) }, false, " " );
 
else
 
error( cfg.messages["bare_url_no_origin"] );
 
end
 
end
 
if not checkurl( URL ) then
 
error_str = seterror( 'bad_url', {}, false, " " ) .. error_str;
 
end
 
return table.concat({ "[", URL, " ", safeforurl( label ), "]", error_str });
 
end
 
  
--[[--------------------------< N O W R A P _ D A T E >--------------------------------------------------------
+
local function select_one( args, possible, error_condition, index )
 
+
local value = nil;
When date is YYYY-MM-DD format wrap in nowrap span: <span ...>YYYY-MM-DD</span>.  When date is DD MMMM YYYY or is
+
local selected = '';
MMMM DD, YYYY then wrap in nowrap span: <span ...>DD MMMM</span> YYYY or <span ...>MMMM DD,</span> YYYY
+
local error_list = {};
 
 
DOES NOT yet support MMMM YYYY or any of the date ranges.
 
 
 
]]
 
 
 
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
+
if index ~= nil then index = tostring(index); end
cap, cap2 = string.match (date, "^(.*)%s+(%d%d%d%d)$");
 
date = substitute (cfg.presentation['nowrap2'], {cap, cap2});
 
end
 
 
 
return date;
+
-- Handle special case of "#" replaced by empty string
end
+
if index == '1' then
 
+
for _, v in ipairs( possible ) do
--[[--------------------------< A M A Z O N >------------------------------------------------------------------
+
v = v:gsub( "#", "" );
 
+
if is_set(args[v]) then
Formats a link to Amazon.  Do simple error checking: asin must be mix of 10 numeric or uppercase alpha
+
if value ~= nil and selected ~= v then
characters.  If a mix, first character must be uppercase alpha; if all numeric, asins must be 10-digit
+
table.insert( error_list, v );
isbn. If 10-digit isbn, add a maintenance category so a bot or awb script can replace |asin= with |isbn=.
+
else
Error message if not 10 characters, if not isbn10, if mixed and first character is a digit.
+
value = args[v];
 
+
selected = v;
]]
+
end
 
 
function amazon(id, domain)
 
local err_cat = ""
 
 
 
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
 
err_cat =  ' ' .. seterror ('bad_asin'); -- asin is not a mix of 10 uppercase alpha and numeric characters
 
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 checkisbn( id ) then -- see if asin value is isbn10
 
table.insert( z.maintenance_cats, "CS1 maint: ASIN uses ISBN"); -- add to maint category
 
elseif not is_set (err_cat) then
 
err_cat = ' ' .. seterror ('bad_asin'); -- asin is not isbn10
 
 
end
 
end
elseif not id:match("^%u[%d%u]+$") then
+
end
err_cat =  ' ' .. seterror ('bad_asin'); -- asin doesn't begin with uppercase alpha
 
end
 
 
end
 
end
if not is_set(domain) then  
+
domain = "com";
+
for _, v in ipairs( possible ) do
elseif inArray (domain, {'jp', 'uk'}) then -- Japan, United Kingdom
+
if index ~= nil then
domain = "co." .. domain;
+
v = v:gsub( "#", index );
elseif inArray (domain, {'au', 'br', 'mx'}) then -- Australia, Brazil, Mexico
+
end
domain = "com." .. domain;
+
if is_set(args[v]) then
 +
if value ~= nil and selected ~=  v then
 +
table.insert( error_list, v );
 +
else
 +
value = args[v];
 +
selected = v;
 +
end
 +
end
 +
end
 +
 +
if #error_list > 0 then
 +
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
 
end
local handler = cfg.id_handlers['ASIN'];
+
return externallinkid({link = handler.link,
+
return value, selected;
label=handler.label , prefix="//www.amazon."..domain.."/dp/",id=id,
 
encode=handler.encode, separator = handler.separator}) .. err_cat;
 
 
end
 
end
  
--[[--------------------------< A R X I V >--------------------------------------------------------------------
+
--[[--------------------------< F O R M A T _ C H A P T E R _ T I T L E >--------------------------------------
  
See: http://arxiv.org/help/arxiv_identifier
+
Format the three chapter parameters: |chapter=, |trans-chapter=, and |chapter-url= into a single Chapter meta-
 +
parameter (chapter_url_source used for error messages).
  
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:
 
arXiv:<date code>.<number><version>
 
where:
 
<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
 
<number> is a four-digit number
 
<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
 
 
]]
 
]]
  
function arxiv (id)
+
local function format_chapter_title (chapter, transchapter, chapterurl, chapter_url_source)
local handler = cfg.id_handlers['ARXIV'];
+
local chapter_error = '';
local year, month, version;
 
local err_cat = ""
 
 
 
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 not is_set (chapter) then
year, month = id:match("^%a[%a%.%-]+/([90]%d)([01]%d)%d%d%d[v%d]*$");
+
chapter = ''; -- just to be safe for concatenation
year = tonumber(year);
+
if is_set (transchapter) then
month = tonumber(month);
+
chapter = wrap_style ('trans-quoted-title', transchapter);
if ((not (90 < year or 8 > year)) or (1 > month or 12 < month)) or -- if invalid year or invalid month
+
chapter_error = " " .. set_error ('trans_missing_chapter');
((91 == year and 7 > month) or (7 == year and 3 < month)) then -- if years ok, are starting and ending months ok?
+
end
err_cat = ' ' .. seterror( 'bad_arxiv' ); -- set error message
+
if is_set (chapterurl) then
 +
chapter = external_link (chapterurl, chapter, chapter_url_source); -- adds bare_url_missing_title error if appropriate
 
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
+
return chapter .. chapter_error;
year, month = id:match("^(%d%d)([01]%d)%.%d%d%d%d[v%d]*$");
+
else -- here when chapter is set
year = tonumber(year);
+
chapter = kern_quotes (chapter); -- if necessary, separate chapter title's leading and trailing quote marks from Module provided quote marks
month = tonumber(month);
+
chapter = wrap_style ('quoted-title', chapter);
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)
+
if is_set (transchapter) then
((7 == year) and (4 > month)) then --or -- when year is 07, is month invalid (before April)?
+
transchapter = wrap_style ('trans-quoted-title', transchapter);
err_cat = ' ' .. seterror( 'bad_arxiv' ); -- set error message
+
chapter = chapter .. ' ' .. transchapter;
 
end
 
end
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
+
if is_set (chapterurl) then
year, month = id:match("^(%d%d)([01]%d)%.%d%d%d%d%d[v%d]*$");
+
chapter = external_link (chapterurl, chapter); -- adds bare_url_missing_title error if appropriate
year = tonumber(year);
 
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 = ' ' .. seterror( 'bad_arxiv' ); -- set error message
 
 
end
 
end
else
 
err_cat = ' ' .. seterror( 'bad_arxiv' ); -- arXiv id doesn't match any format
 
 
end
 
end
 
+
return chapter;
return externallinkid({link = handler.link, label = handler.label,
+
end
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
 
end
 
 
 
  
 
--[[
 
--[[
lccn normalization (http://www.loc.gov/marc/lccn-namespace.html#normalization)
+
Argument wrapper. This function provides support for argument
1. Remove all blanks.
+
mapping defined in the configuration file so that multiple names
2. If there is a forward slash (/) in the string, remove it, and remove all characters to the right of the forward slash.
+
can be transparently aliased to single internal variable.
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 argument_wrapper( args )
function normalize_lccn (lccn)
+
local origin = {};
lccn = lccn:gsub ("%s", ""); -- 1. strip whitespace
 
 
 
if nil ~= string.find (lccn,'/') then
 
lccn = lccn:match ("(.-)/"); -- 2. remove forward slash and all character to the right of it
 
end
 
 
 
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
 
suffix=string.rep("0", 6-string.len (suffix)) .. suffix; -- 3.b.2 left fill the suffix with 0s if suffix length less than 6
 
lccn=prefix..suffix; -- reassemble the lccn
 
end
 
 
 
return lccn;
+
return setmetatable({
end
+
ORIGIN = function( self, k )
 
+
local dummy = self[k]; --force the variable to be loaded.
--[[
+
return origin[k];
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
 
length = 9 then lccn[1] is lower case alpha
 
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
 
 
 
]]
 
function lccn(lccn)
 
local handler = cfg.id_handlers['LCCN'];
 
local err_cat =  ''; -- presume that LCCN is valid
 
local id = lccn; -- local copy of the lccn
 
 
 
id = normalize_lccn (id); -- get canonical form (no whitespace, hyphens, forward slashes)
 
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 = ' ' .. seterror( 'bad_lccn' ); -- set an error message
 
 
end
 
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 = ' ' .. seterror( 'bad_lccn' ); -- set an error message
+
__index = function ( tbl, k )
end
+
if origin[k] ~= nil then
elseif 10 == len then -- LCCN should be aadddddddd or dddddddddd
+
return nil;
if id:match("[^%d]") then -- if LCCN has anything but digits (nil if only digits) ...
+
end
if nil == id:match("^%l%l%d%d%d%d%d%d%d%d") then -- ... see if it matches our pattern
+
err_cat = ' ' .. seterror( 'bad_lccn' ); -- no match, set an error message
+
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
 
end
end
+
elseif 11 == len then -- LCCN should be aaadddddddd or adddddddddd
+
-- Empty strings, not nil;
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
+
if v == nil then
err_cat = ' ' .. seterror( 'bad_lccn' ); -- no match, set an error message
+
v = cfg.defaults[k] or '';
end
+
origin[k] = '';
elseif 12 == len then -- LCCN should be aadddddddddd
+
end
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 = ' ' .. seterror( 'bad_lccn' ); -- no match, set an error message
+
tbl = rawset( tbl, k, v );
end
+
return v;
else
+
end,
err_cat = ' ' .. seterror( 'bad_lccn' ); -- wrong length, set an error message
+
});
end
 
 
 
if not is_set (err_cat) and nil ~= lccn:find ('%s') then
 
err_cat = ' ' .. seterror( 'bad_lccn' ); -- lccn contains a space, set an error message
 
end
 
 
 
return externallinkid({link = handler.link, label = handler.label,
 
prefix=handler.prefix,id=lccn,separator=handler.separator, encode=handler.encode}) .. err_cat;
 
 
end
 
end
  
 
--[[
 
--[[
Format PMID and do simple error checking. PMIDs are sequential numbers beginning at 1 and counting up.  This code checks the PMID to see that it
+
Looks for a parameter's name in the whitelist.
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.
+
 
 +
Parameters in the whitelist can have three values:
 +
true - active, supported parameters
 +
false - deprecated, supported parameters
 +
nil - unsupported parameters
 
]]
 
]]
function pmid(id)
+
local function validate( name )
local test_limit = 30000000; -- update this value as PMIDs approach
+
local name = tostring( name );
local handler = cfg.id_handlers['PMID'];
+
local state = whitelist.basic_arguments[ name ];
local err_cat =  ''; -- presume that PMID is valid
 
 
 
if id:match("[^%d]") then -- if PMID has anything but digits
+
-- Normal arguments
err_cat = ' ' .. seterror( 'bad_pmid' ); -- set an error message
+
if true == state then return true; end -- valid actively supported parameter
else -- PMID is only digits
+
if false == state then
local id_num = tonumber(id); -- convert id to a number for range testing
+
deprecated_parameter (name); -- parameter is deprecated but still supported
if 1 > id_num or test_limit < id_num then -- if PMID is outside test limit boundaries
+
return true;
err_cat = ' ' .. seterror( 'bad_pmid' ); -- set an error message
 
end
 
 
end
 
end
 
 
return externallinkid({link = handler.link, label = handler.label,
+
-- Arguments with numbers in them
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
+
name = name:gsub( "%d+", "#" ); -- replace digit(s) with # (last25 becomes last#
end
+
state = whitelist.numbered_arguments[ name ];
 
+
if true == state then return true; end -- valid actively supported parameter
--[[
+
if false == state then
Determines if a PMC identifier's online version is embargoed. Compares the date in |embargo= against today's date.  If embargo date is
+
deprecated_parameter (name); -- parameter is deprecated but still supported
in the future, returns true; otherwise, returns false because the embargo has expired or |embargo= not set in this cite.
+
return true;
]]
+
end
function is_embargoed(embargo)
 
if is_set(embargo) then
 
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 and tonumber( embargo_date ) >= tonumber( todays_date ) then --is embargo date is in the future?
+
return false; -- Not supported because not found or name is set to nil
return true; -- still embargoed
 
end
 
end
 
return false; -- embargo expired or |embargo= not set
 
 
end
 
end
  
--[[
 
Format a PMC, do simple error checking, and check for embargoed articles.
 
  
The embargo parameter takes a date for a value. If the embargo date is in the future
+
-- Formats a wiki style internal link
the PMC identifier will not be linked to the articleIf the embargo specifies a date in the past, or if it is empty or omitted, then
+
local function internal_link_id(options)
the PMC identifier is linked to the article through the link at cfg.id_handlers['PMC'].prefix.
+
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
 +
 
 +
 
 +
--[[--------------------------< 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.
  
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.
 
 
]]
 
]]
function pmc(id, embargo)
 
local test_limit = 5000000; -- update this value as PMCs approach
 
local handler = cfg.id_handlers['PMC'];
 
local err_cat =  ''; -- presume that PMC is valid
 
 
local text;
 
  
if id:match("[^%d]") then -- if PMC has anything but digits
+
local function nowrap_date (date)
err_cat = ' ' .. seterror( 'bad_pmc' ); -- set an error message
+
local cap='';
else -- PMC is only digits
+
local cap2='';
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
+
if date:match("^%d%d%d%d%-%d%d%-%d%d$") then
err_cat = ' ' .. seterror( 'bad_pmc' ); -- set an error message
+
date = substitute (cfg.presentation['nowrap1'], date);
end
 
end
 
 
 
if is_embargoed(embargo) then
+
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
text="[[" .. handler.link .. "|" .. handler.label .. "]]:" .. handler.separator .. id .. err_cat; --still embargoed so no external link
+
cap, cap2 = string.match (date, "^(.*)%s+(%d%d%d%d)$");
else
+
date = substitute (cfg.presentation['nowrap2'], {cap, cap2});
text = externallinkid({link = handler.link, label = handler.label, --no embargo date, ok to link to article
 
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
 
 
end
 
end
return text;
+
 +
return date;
 
end
 
end
  
-- Formats a DOI and checks for DOI errors.
+
--[[--------------------------< IS _ V A L I D _ I S X N >-----------------------------------------------------
 +
 
 +
ISBN-10 and ISSN validator code calculates checksum across all isbn/issn digits including the check digit. ISBN-13 is checked in check_isbn().
 +
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,
 +
spaces and other non-isxn characters.
  
-- DOI names contain two parts: prefix and suffix separated by a forward slash.
+
]]
--  Prefix: directory indicator '10.' followed by a registrant code
 
--  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,
+
local function is_valid_isxn (isxn_str, len)
-- or, if it ends with a period or a comma, this function will emit a bad_doi error message.
+
local temp = 0;
 +
isxn_str = { isxn_str:byte(1, len) }; -- make a table of bytes
 +
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
 +
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
  
-- DOI names are case-insensitive and can incorporate any printable Unicode characters so the test for spaces, endash,
 
-- and terminal punctuation may not be technically correct but it appears, that in practice these characters are rarely if ever used in doi names.
 
  
function doi(id, inactive)
+
--[[--------------------------< C H E C K _ I S B N >------------------------------------------------------------
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 = externallinkid({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
+
Determines whether an ISBN string is valid
cat = ' ' .. seterror( 'bad_doi' );
 
end
 
return text .. inactive .. cat
 
end
 
  
-- Formats an OpenLibrary link, and checks for associated errors.
+
]]
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 check_isbn( isbn_str )
return externallinkid({link=handler.link, label=handler.label,
+
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
prefix="http://openlibrary.org/authors/OL",id=id, separator=handler.separator,
+
isbn_str = isbn_str:gsub( "-", "" ):gsub( " ", "" ); -- remove hyphens and spaces
encode = handler.encode})
+
local len = isbn_str:len();
elseif ( code == "M" ) then
+
return externallinkid({link=handler.link, label=handler.label,
+
if len ~= 10 and len ~= 13 then
prefix="http://openlibrary.org/books/OL",id=id, separator=handler.separator,
+
return false;
encode = handler.encode})
+
end
elseif ( code == "W" ) then
+
 
return externallinkid({link=handler.link, label=handler.label,
+
if len == 10 then
prefix= "http://openlibrary.org/works/OL",id=id, separator=handler.separator,
+
if isbn_str:match( "^%d*X?$" ) == nil then return false; end
encode = handler.encode})
+
return is_valid_isxn(isbn_str, 10);
 
else
 
else
return externallinkid({link=handler.link, label=handler.label,
+
local temp = 0;
prefix= "http://openlibrary.org/OL",id=id, separator=handler.separator,
+
if isbn_str:match( "^97[89]%d*$" ) == nil then return false; end -- isbn13 begins with 978 or 979
encode = handler.encode}) ..
+
isbn_str = { isbn_str:byte(1, len) };
' ' .. seterror( 'bad_ol' );
+
for i, v in ipairs( isbn_str ) do
 +
temp = temp + (3 - 2*(i % 2)) * tonumber( string.char(v) );
 +
end
 +
return temp % 10 == 0;
 
end
 
end
 
end
 
end
  
--[[
+
--[[--------------------------< I S S N >----------------------------------------------------------------------
 +
 
 
Validate and format an issn.  This code fixes the case where an editor has included an ISSN in the citation but has separated the two groups of four
 
Validate and format an issn.  This code fixes the case where an editor has included an ISSN in the citation but has separated the two groups of four
 
digits with a space.  When that condition occurred, the resulting link looked like this:
 
digits with a space.  When that condition occurred, the resulting link looked like this:
Line 749: Line 624:
 
with the calculated value.  Incorrect length (8 digits), characters other than 0-9 and X, or checkdigit / calculated value mismatch will all cause a check issn
 
with the calculated value.  Incorrect 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.
 
error message.  The issn is always displayed with a hyphen, even if the issn was given as a single group of 8 digits.
 +
 
]]
 
]]
function issn(id)
+
 
 +
local function issn(id)
 
local issn_copy = id; -- save a copy of unadulterated issn; use this version for display if issn does not validate
 
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 handler = cfg.id_handlers['ISSN'];
Line 770: Line 647:
 
end
 
end
 
 
text = externallinkid({link = handler.link, label = handler.label,
+
text = external_link_id({link = handler.link, label = handler.label,
 
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
 
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
 
   
 
   
 
if false == valid_issn then
 
if false == valid_issn then
text = text .. ' ' .. seterror( 'bad_issn' ) -- add an error message if the issn is invalid
+
text = text .. ' ' .. set_error( 'bad_issn' ) -- add an error message if the issn is invalid
 
end  
 
end  
 
 
Line 780: Line 657:
 
end
 
end
  
--[[--------------------------< M E S S A G E _ I D >----------------------------------------------------------
+
--[[--------------------------< A M A Z O N >------------------------------------------------------------------
  
Validate and format a usenet message idSimple error checking, looks for 'id-left@id-right' not enclosed in
+
Formats a link to AmazonDo simple error checking: asin must be mix of 10 numeric or uppercase alpha
'<' and/or '>' angle brackets.
+
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.
  
 
]]
 
]]
  
function message_id (id)
+
local function amazon(id, domain)
local handler = cfg.id_handlers['USENETID'];
+
local err_cat = ""
  
text = externallinkid({link = handler.link, label = handler.label,
+
if not id:match("^[%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u]$") then
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
+
err_cat = ' ' .. set_error ('bad_asin'); -- asin is not a mix of 10 uppercase alpha and numeric characters
+
else
if not id:match('^.+@.+$') or not id:match('^[^<].*[^>]$')then -- doesn't have '@' or has one or first or last character is '< or '>'
+
if id:match("^%d%d%d%d%d%d%d%d%d[%dX]$") then -- if 10-digit numeric (or 9 digits with terminal X)
text = text .. ' ' .. seterror( 'bad_message_id' ) -- add an error message if the message id is invalid
+
if check_isbn( id ) then -- see if asin value is isbn10
end  
+
table.insert( z.maintenance_cats, 'CS1 maint: ASIN uses ISBN'); -- add to maint category
+
elseif not is_set (err_cat) then
return text
+
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
 +
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="//www.amazon."..domain.."/dp/",id=id,
 +
encode=handler.encode, separator = handler.separator}) .. err_cat;
 
end
 
end
  
 +
--[[--------------------------< A R X I V >--------------------------------------------------------------------
  
 +
See: http://arxiv.org/help/arxiv_identifier
  
--[[--------------------------< S E T _ T I T L E T Y P E >----------------------------------------------------
+
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:
This function sets default title types (equivalent to the citation including |type=<default value>) for those citations that have defaults.
+
arXiv:<archive>.<class>/<date code><number><version>
Also handles the special case where it is desirable to omit the title type from the rendered citation (|type=none).
+
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:
 +
arXiv:<date code>.<number><version>
 +
where:
 +
<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
 +
<number> is a four-digit number
 +
<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
 
]]
 
]]
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
 
  
if "AV-media-notes" == cite_class or "DVD-notes" == cite_class then -- if this citation is cite AV media notes or cite DVD notes
+
local function arxiv (id)
return "Media notes"; -- display AV media notes / DVD media notes annotation
+
local handler = cfg.id_handlers['ARXIV'];
 
+
local year, month, version;
elseif "mailinglist" == cite_class then -- if this citation is cite mailing list
+
local err_cat = ""
return "Mailing list"; -- display mailing list annotation
+
 +
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
 +
year, month = id:match("^%a[%a%.%-]+/([90]%d)([01]%d)%d%d%d[v%d]*$");
 +
year = tonumber(year);
 +
month = tonumber(month);
 +
if ((not (90 < year or 8 > year)) or (1 > month or 12 < month)) or -- if invalid year or invalid month
 +
((91 == year and 7 > month) or (7 == year and 3 < month)) then -- if years ok, are starting and ending months ok?
 +
err_cat = ' ' .. set_error( 'bad_arxiv' ); -- set error message
 +
end
 +
elseif id:match("^%d%d[01]%d%.%d%d%d%d$") or id:match("^%d%d[01]%d%.%d%d%d%dv%d+$") then -- test for the 0704-1412 w/ & w/o version
 +
year, month = id:match("^(%d%d)([01]%d)%.%d%d%d%d[v%d]*$");
 +
year = tonumber(year);
 +
month = tonumber(month);
 +
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)?
 +
err_cat = ' ' .. set_error( 'bad_arxiv' ); -- set error message
 +
end
 +
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
 +
year, month = id:match("^(%d%d)([01]%d)%.%d%d%d%d%d[v%d]*$");
 +
year = tonumber(year);
 +
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
  
elseif "podcast" == cite_class then -- if this citation is cite podcast
+
return external_link_id({link = handler.link, label = handler.label,
return "Podcast"; -- display podcast annotation
+
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
 +
end
  
elseif "pressrelease" == cite_class then -- if this citation is cite press release
 
return "Press release"; -- display press release annotation
 
  
elseif "report" == cite_class then -- if this citation is cite report
+
--[[
return "Report"; -- display report annotation
+
lccn normalization (http://www.loc.gov/marc/lccn-namespace.html#normalization)
+
1. Remove all blanks.
elseif "techreport" == cite_class then -- if this citation is cite techreport
+
2. If there is a forward slash (/) in the string, remove it, and remove all characters to the right of the forward slash.
return "Technical report"; -- display techreport annotation
+
3. If there is a hyphen in the string:
+
a. Remove it.
elseif "thesis" == cite_class then -- if this citation is cite thesis (degree option handled after this function returns)
+
b. Inspect the substring following (to the right of) the (removed) hyphen. Then (and assuming that steps 1 and 2 have been carried out):
return "Thesis"; -- display simple thesis annotation (without |degree= modification)
+
1. All these characters should be digits, and there should be six or less. (not done in this function)
end
+
2. If the length of the substring is less than 6, left-fill the substring with zeroes until the length is six.
end
 
  
--[[
+
Returns a normalized lccn for lccn() to validate.  There is no error checking (step 3.b.1) performed in this function.
Determines whether a URL string is valid
+
]]
  
At present the only check is whether the string appears to
+
local function normalize_lccn (lccn)
be prefixed with a URI scheme.  It is not determined whether
+
lccn = lccn:gsub ("%s", ""); -- 1. strip whitespace
the URI scheme is valid or whether the URL is otherwise well
 
formed.
 
]]
 
function checkurl( url_str )
 
-- Protocol-relative or URL scheme
 
return url_str:sub(1,2) == "//" or url_str:match( "^[^/]*:" ) ~= nil;
 
end
 
  
-- Removes irrelevant text and dashes from ISBN number
+
if nil ~= string.find (lccn,'/') then
-- Similar to that used for Special:BookSources
+
lccn = lccn:match ("(.-)/"); -- 2. remove forward slash and all character to the right of it
function cleanisbn( isbn_str )
+
end
return isbn_str:gsub( "[^-0-9X]", "" );
 
end
 
  
--[[--------------------------< E S C A P E _ L U A _ M A G I C _ C H A R S >----------------------------------
+
local prefix
 +
local suffix
 +
prefix, suffix = lccn:match ("(.+)%-(.+)"); -- 3.a remove hyphen by splitting the string into prefix and suffix
  
Returns a string where all of lua's magic characters have been escaped.  This is important because functions like
+
if nil ~= suffix then -- if there was a hyphen
string.gsub() treat their pattern and replace strings as patterns, not literal strings.
+
suffix=string.rep("0", 6-string.len (suffix)) .. suffix; -- 3.b.2 left fill the suffix with 0s if suffix length less than 6
]]
+
lccn=prefix..suffix; -- reassemble the lccn
function escape_lua_magic_chars (argument)
+
end
argument = argument:gsub("%%", "%%%%"); -- replace % with %%
+
argument = argument:gsub("([%^%$%(%)%.%[%]%*%+%-%?])", "%%%1"); -- replace all other lua magic pattern characters
+
return lccn;
return argument;
+
end
end
 
  
--[[--------------------------< S T R I P _ A P O S T R O P H E _ M A R K U P >--------------------------------
+
--[[
 +
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/
  
Strip wiki italic and bold markup from argument so that it doesn't contaminate COinS metadata.
+
length = 8 then all digits
This function strips common patterns of apostrophe markup.  We presume that editors who have taken the time to
+
length = 9 then lccn[1] is lower case alpha
markup a title have, as a result, provided valid markup. When they don't, some single apostrophes are left behind.
+
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
  
 
]]
 
]]
function strip_apostrophe_markup (argument)
+
local function lccn(lccn)
if not is_set (argument) then return argument; end
+
local handler = cfg.id_handlers['LCCN'];
 +
local err_cat =  ''; -- presume that LCCN is valid
 +
local id = lccn; -- local copy of the lccn
 +
 
 +
id = normalize_lccn (id); -- get canonical form (no whitespace, hyphens, forward slashes)
 +
local len = id:len(); -- get the length of the lccn
  
while true do
+
if 8 == len then
if argument:match ("%'%'%'%'%'") then -- bold italic (5)
+
if id:match("[^%d]") then -- if LCCN has anything but digits (nil if only digits)
argument=argument:gsub("%'%'%'%'%'", ""); -- remove all instances of it
+
err_cat = ' ' .. set_error( 'bad_lccn' ); -- set an error message
elseif argument:match ("%'%'%'%'") then -- italic start and end without content (4)
+
end
argument=argument:gsub("%'%'%'%'", "");
+
elseif 9 == len then -- LCCN should be adddddddd
elseif argument:match ("%'%'%'") then -- bold (3)
+
if nil == id:match("%l%d%d%d%d%d%d%d%d") then -- does it match our pattern?
argument=argument:gsub("%'%'%'", "");
+
err_cat = ' ' .. set_error( 'bad_lccn' ); -- set an error message
elseif argument:match ("%'%'") then -- italic (2)
+
end
argument=argument:gsub("%'%'", "");
+
elseif 10 == len then -- LCCN should be aadddddddd or dddddddddd
else
+
if id:match("[^%d]") then -- if LCCN has anything but digits (nil if only digits) ...
break;
+
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
 
end
 +
else
 +
err_cat = ' ' .. set_error( 'bad_lccn' ); -- wrong length, set an error message
 
end
 
end
return argument; -- done
 
end
 
  
--[[--------------------------< M A K E _ C O I N S _ T I T L E >----------------------------------------------
+
if not is_set (err_cat) and nil ~= lccn:find ('%s') then
 +
err_cat = ' ' .. set_error( 'bad_lccn' ); -- lccn contains a space, set an error message
 +
end
  
Makes a title for COinS from Title and / or ScriptTitle (or any other name-script pairs)
+
return external_link_id({link = handler.link, label = handler.label,
 +
prefix=handler.prefix,id=lccn,separator=handler.separator, encode=handler.encode}) .. err_cat;
 +
end
  
Apostrophe markup (bold, italics) is stripped from each value so that the COinS metadata isn't correupted with strings
+
--[[
of %27%27...
+
Format PMID and do simple error checking. PMIDs 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.
 
]]
 
]]
 
+
local function pmid(id)
function make_coins_title (title, script)
+
local test_limit = 30000000; -- update this value as PMIDs approach
if is_set (title) then
+
local handler = cfg.id_handlers['PMID'];
title = strip_apostrophe_markup (title); -- strip any apostrophe markup
+
local err_cat =  ''; -- presume that PMID is valid
else
+
title=''; -- if not set, make sure title is an empty string
+
if id:match("[^%d]") then -- if PMID has anything but digits
 +
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
 +
else -- PMID 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 PMID is outside test limit boundaries
 +
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
 +
end
 
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)
+
return external_link_id({link = handler.link, label = handler.label,
script = strip_apostrophe_markup (script); -- strip any apostrophe markup
+
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
else
 
script=''; -- if not set, make sure script is an empty string
 
end
 
if is_set (title) and is_set (script) then
 
script = ' ' .. script; -- add a space before we concatenate
 
end
 
return title .. script; -- return the concatenation
 
 
end
 
end
  
--[[--------------------------< G E T _ C O I N S _ P A G E S >------------------------------------------------
+
--[[
 
+
Determines if a PMC identifier's online version is embargoed. Compares the date in |embargo= against today's date.  If embargo date is
Extract page numbers from external wikilinks in any of the |page=, |pages=, or |at= parameters for use in COinS.
+
in the future, returns true; otherwise, returns false because the embargo has expired or |embargo= not set in this cite.
 
 
 
]]
 
]]
function get_coins_pages (pages)
+
local function is_embargoed(embargo)
local pattern;
+
if is_set(embargo) then
if not is_set (pages) then return pages; end -- if no page numbers then we're done
+
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' );
 
 
while true do
+
if good1 and good2 and tonumber( embargo_date ) >= tonumber( todays_date ) then --is embargo date is in the future?
pattern = pages:match("%[(%w*:?//[^ ]+%s+)[%w%d].*%]"); -- pattern is the opening bracket, the url and following space(s): "[url "
+
return true; -- still embargoed
if nil == pattern then break; end -- no more urls
+
end
pattern = escape_lua_magic_chars (pattern); -- pattern is not a literal string; escape lua's magic pattern characters
 
pages = pages:gsub(pattern, ""); -- remove as many instances of pattern as possible
 
 
end
 
end
pages = pages:gsub("[%[%]]", ""); -- remove the brackets
+
return false; -- embargo expired or |embargo= not set
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
  
 
--[[
 
--[[
ISBN-10 and ISSN validator code calculates checksum across all isbn/issn digits including the check digit. ISBN-13 is checked in checkisbn().
+
Format a PMC, do simple error checking, and check for embargoed articles.
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,
+
 
spaces and other non-isxn characters.
+
The embargo parameter takes a date for a value. If the embargo date is in the future
]]
+
the PMC identifier will not be linked to the article. If the embargo specifies a date in the past, or if it is empty or omitted, then
function is_valid_isxn (isxn_str, len)
+
the PMC identifier is linked to the article through the link at cfg.id_handlers['PMC'].prefix.
local temp = 0;
+
 
isxn_str = { isxn_str:byte(1, len) }; -- make a table of bytes
+
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
len = len+1; -- adjust to be a loop counter
+
than test_limit; the value in local variable test_limit will need to be updated periodically as more PMCs are issued.
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
+
local function pmc(id, embargo)
temp = temp + 10*( len - i ); -- it represents 10 decimal
+
local test_limit = 5000000; -- update this value as PMCs approach
else
+
local handler = cfg.id_handlers['PMC'];
temp = temp + tonumber( string.char(v) )*(len-i);
+
local err_cat = ''; -- presume that PMC is valid
 +
 +
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
 
end
return temp % 11 == 0; -- returns true if calculation result is zero
+
 +
if is_embargoed(embargo) then
 +
text="[[" .. handler.link .. "|" .. handler.label .. "]]:" .. handler.separator .. id .. err_cat; --still embargoed so no external link
 +
else
 +
text = external_link_id({link = handler.link, label = handler.label, --no embargo date, ok to link to article
 +
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
 +
end
 +
return text;
 
end
 
end
  
-- Determines whether an ISBN string is valid
+
-- Formats a DOI and checks for DOI errors.
function checkisbn( isbn_str )
 
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
 
isbn_str = isbn_str:gsub( "-", "" ):gsub( " ", "" ); -- remove hyphens and spaces
 
local len = isbn_str:len();
 
 
if len ~= 10 and len ~= 13 then
 
return false;
 
end
 
  
if len == 10 then
+
-- DOI names contain two parts: prefix and suffix separated by a forward slash.
if isbn_str:match( "^%d*X?$" ) == nil then return false; end
+
--  Prefix: directory indicator '10.' followed by a registrant code
return is_valid_isxn(isbn_str, 10);
+
-- Suffix: character string of any length chosen by the registrant
else
 
local temp = 0;
 
if isbn_str:match( "^97[89]%d*$" ) == nil then return false; end -- isbn13 begins with 978 or 979
 
isbn_str = { isbn_str:byte(1, len) };
 
for i, v in ipairs( isbn_str ) do
 
temp = temp + (3 - 2*(i % 2)) * tonumber( string.char(v) );
 
end
 
return temp % 10 == 0;
 
end
 
end
 
  
-- Gets the display text for a wikilink like [[A|B]] or [[B]] gives B
+
-- This function checks a DOI name for: prefix/suffix.  If the doi name contains spaces or endashes,
function removewikilink( str )
+
-- or, if it ends with a period or a comma, this function will emit a bad_doi error message.
return (str:gsub( "%[%[([^%[%]]*)%]%]", function(l)
 
return l:gsub( "^[^|]*|(.*)$", "%1" ):gsub("^%s*(.-)%s*$", "%1");
 
end));
 
end
 
  
-- Escape sequences for content that will be used for URL descriptions
+
-- DOI names are case-insensitive and can incorporate any printable Unicode characters so the test for spaces, endash,
function safeforurl( str )
+
-- and terminal punctuation may not be technically correct but it appears, that in practice these characters are rarely if ever used in doi names.
if str:match( "%[%[.-%]%]" ) ~= nil then
+
 
table.insert( z.message_tail, { seterror( 'wikilink_in_url', {}, true ) } );
+
local function doi(id, inactive)
end
+
local cat = ""
 +
local handler = cfg.id_handlers['DOI'];
 
 
return str:gsub( '[%[%]\n]', {
+
local text;
['['] = '&#91;',
+
if is_set(inactive) then
[']'] = '&#93;',
+
local inactive_year = inactive:match("%d%d%d%d") or ''; -- try to get the year portion from the inactive date
['\n'] = ' ' } );
+
text = "[[" .. handler.link .. "|" .. handler.label .. "]]:" .. id;
end
+
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
  
-- Converts a hyphen to a dash
+
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
function hyphentodash( str )
+
cat = ' ' .. set_error( 'bad_doi' );
if not is_set(str) or str:match( "[%[%]{}<>]" ) ~= nil then
+
end
return str;
+
return text .. inactive .. cat
end
 
return str:gsub( '-', '–' );
 
 
end
 
end
  
-- Protects a string that will be wrapped in wiki italic markup '' ... ''
+
-- Formats an OpenLibrary link, and checks for associated errors.
function safeforitalics( str )
+
local function openlibrary(id)
--[[ Note: We cannot use <i> for italics, as the expected behavior for
+
local code = id:match("^%d+([AMW])$"); -- only digits followed by 'A', 'M', or 'W'
italics specified by ''...'' in the title is that they will be inverted
+
local handler = cfg.id_handlers['OL'];
(i.e. unitalicized) in the resulting references. In addition, <i> and ''
+
 
tend to interact poorly under Mediawiki's HTML tidy. ]]
+
if ( code == "A" ) then
+
return external_link_id({link=handler.link, label=handler.label,
if not is_set(str) then
+
prefix="http://openlibrary.org/authors/OL",id=id, separator=handler.separator,
return str;
+
encode = handler.encode})
 +
elseif ( code == "M" ) then
 +
return external_link_id({link=handler.link, label=handler.label,
 +
prefix="http://openlibrary.org/books/OL",id=id, separator=handler.separator,
 +
encode = handler.encode})
 +
elseif ( code == "W" ) then
 +
return external_link_id({link=handler.link, label=handler.label,
 +
prefix= "http://openlibrary.org/works/OL",id=id, separator=handler.separator,
 +
encode = handler.encode})
 
else
 
else
if str:sub(1,1) == "'" then str = "<span />" .. str; end
+
return external_link_id({link=handler.link, label=handler.label,
if str:sub(-1,-1) == "'" then str = str .. "<span />"; end
+
prefix= "http://openlibrary.org/OL",id=id, separator=handler.separator,
+
encode = handler.encode}) ..  
-- Remove newlines as they break italics.
+
' ' .. set_error( 'bad_ol' );
return str:gsub( '\n', ' ' );
 
 
end
 
end
 
end
 
end
  
--[[--------------------------< S A F E J O I N >--------------------------------------------------------------
 
  
Joins a sequence of strings together while checking for duplicate separation characters.
+
--[[--------------------------< M E S S A G E _ I D >----------------------------------------------------------
 +
 
 +
Validate and format a usenet message id.  Simple error checking, looks for 'id-left@id-right' not enclosed in
 +
'<' and/or '>' angle brackets.
  
 
]]
 
]]
function safejoin( tbl, duplicate_char )
+
 
--[[
+
local function message_id (id)
Note: we use string functions here, rather than ustring functions.
+
local handler = cfg.id_handlers['USENETID'];
+
 
This has considerably faster performance and should work correctly as
+
text = external_link_id({link = handler.link, label = handler.label,
long as the duplicate_char is strict ASCII.  The strings
+
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
in tbl may be ASCII or UTF8.
+
]]
+
if not id:match('^.+@.+$') or not id:match('^[^<].*[^>]$')then -- doesn't have '@' or has one or first or last character is '< or '>'
 +
text = text .. ' ' .. set_error( 'bad_message_id' ) -- add an error message if the message id is invalid
 +
end
 
 
local str = ''; -- the output string
+
return text
local comp = ''; -- what does 'comp' mean?
+
end
local end_chr = '';
+
 
local trim;
+
 
for _, value in ipairs( tbl ) do
+
 
if value == nil then value = ''; end
+
--[[--------------------------< S E T _ T I T L E T Y P E >----------------------------------------------------
+
 
if str == '' then -- if output string is empty
+
This function sets default title types (equivalent to the citation including |type=<default value>) for those citations that have defaults.
str = value; -- assign value to it (first time through the loop)
+
Also handles the special case where it is desirable to omit the title type from the rendered citation (|type=none).
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)
+
local function set_titletype(cite_class, title_type)
else
+
if is_set(title_type) then
comp = value;
+
if "none" == title_type then
end
+
title_type = ""; -- if |type=none then type parameter not displayed
-- typically duplicate_char is sepc
+
end
if comp:sub(1,1) == duplicate_char then -- is first charactier same as duplicate_char? why test first character?
+
return title_type; -- if |type= has been set to any other value use that value
--   Because individual string segments often (always?) begin with terminal punct for th
+
end
--   preceding segment: 'First element' .. 'sepc next element' .. etc?
+
 
trim = false;
+
if "AV-media-notes" == cite_class or "DVD-notes" == cite_class then -- if this citation is cite AV media notes or cite DVD notes
end_chr = str:sub(-1,-1); -- get the last character of the output string
+
return "Media notes"; -- display AV media notes / DVD media notes annotation
-- str = str .. "<HERE(enchr=" .. end_chr.. ")" -- debug stuff?
+
 
if end_chr == duplicate_char then -- if same as separator
+
elseif "mailinglist" == cite_class then -- if this citation is cite mailing list
str = str:sub(1,-2); -- remove it
+
return "Mailing list"; -- display mailing list annotation
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''
+
elseif "map" == cite_class then -- if this citation is cite map
str = str:sub(1, -4) .. "''"; -- remove them and add back ''
+
return "Map"; -- display map annotation
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 "podcast" == cite_class then -- if this citation is cite podcast
elseif str:sub(-4,-1) == duplicate_char .. "]''" then -- if last four chars of str are sepc]''
+
return "Podcast"; -- display podcast annotation
trim = true; -- same question
+
 
end
+
elseif "pressrelease" == cite_class then -- if this citation is cite press release
elseif end_chr == "]" then -- if it might be wikimarkup
+
return "Press release"; -- display press release annotation
if str:sub(-3,-1) == duplicate_char .. "]]" then -- if last three chars of str are sepc]] wikilink
+
 
trim = true;
+
elseif "report" == cite_class then -- if this citation is cite report
elseif str:sub(-2,-1) == duplicate_char .. "]" then -- if last two chars of str are sepc] external link
+
return "Report"; -- display report annotation
trim = true;
+
elseif str:sub(-4,-1) == duplicate_char .. "'']" then -- normal case when |url=something & |title=Title.
+
elseif "techreport" == cite_class then -- if this citation is cite techreport
trim = true;
+
return "Technical report"; -- display techreport annotation
end
+
elseif end_chr == " " then -- if last char of output string is a space
+
elseif "thesis" == cite_class then -- if this citation is cite thesis (degree option handled after this function returns)
if str:sub(-2,-1) == duplicate_char .. " " then -- if last two chars of str are <sepc><space>
+
return "Thesis"; -- display simple thesis annotation (without |degree= modification)
str = str:sub(1,-3); -- remove them both
+
end
end
+
end
end
 
  
if trim then
+
-- Removes irrelevant text and dashes from ISBN number
if value ~= comp then -- value does not equal comp when value contains html markup
+
-- Similar to that used for Special:BookSources
local dup2 = duplicate_char;
+
local function clean_isbn( isbn_str )
if dup2:match( "%A" ) then dup2 = "%" .. dup2; end -- if duplicate_char not a letter then escape it
+
return isbn_str:gsub( "[^-0-9X]", "" );
+
end
value = value:gsub( "(%b<>)" .. dup2, "%1", 1 ) -- remove duplicate_char if it follows html markup
+
 
else
+
--[[--------------------------< E S C A P E _ L U A _ M A G I C _ C H A R S >----------------------------------
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 
 
  
-- Attempts to convert names to initials.
+
Returns a string where all of lua's magic characters have been escaped. This is important because functions like
function reducetoinitials(first)
+
string.gsub() treat their pattern and replace strings as patterns, not literal strings.
local initials = {}
+
]]
local i = 0; -- counter for number of initials
+
local function escape_lua_magic_chars (argument)
for word in string.gmatch(first, "%S+") do
+
argument = argument:gsub("%%", "%%%%"); -- replace % with %%
table.insert(initials, string.sub(word,1,1)) -- Vancouver format does not include full stops.
+
argument = argument:gsub("([%^%$%(%)%.%[%]%*%+%-%?])", "%%%1"); -- replace all other lua magic pattern characters
i = i + 1; -- bump the counter
+
return argument;
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
 
end
  
-- Formats a list of people (e.g. authors / editors)
+
--[[--------------------------< S T R I P _ A P O S T R O P H E _ M A R K U P >--------------------------------
function listpeople(control, people)
+
 
local sep;
+
Strip wiki italic and bold markup from argument so that it doesn't contaminate COinS metadata.
local namesep;
+
This function strips common patterns of apostrophe markup. We presume that editors who have taken the time to
local format = control.format
+
markup a title have, as a result, provided valid markup. When they don't, some single apostrophes are left behind.
local maximum = control.maximum
+
 
local lastauthoramp = control.lastauthoramp;
+
]]
local text = {}
+
local function strip_apostrophe_markup (argument)
local etal = false;
+
if not is_set (argument) then return argument; end
+
 
if 'vanc' == format then -- Vancouver-like author/editor name styling?
+
while true do
sep = ','; -- name-list separator between authors is a comma
+
if argument:match ("%'%'%'%'%'") then -- bold italic (5)
namesep = ' '; -- last/first separator is a space
+
argument=argument:gsub("%'%'%'%'%'", ""); -- remove all instances of it
else
+
elseif argument:match ("%'%'%'%'") then -- italic start and end without content (4)
sep = ';' -- name-list separator between authors is a semicolon
+
argument=argument:gsub("%'%'%'%'", "");
namesep = ', ' -- last/first separator is <comma><space>
+
elseif argument:match ("%'%'%'") then -- bold (3)
 +
argument=argument:gsub("%'%'%'", "");
 +
elseif argument:match ("%'%'") then -- italic (2)
 +
argument=argument:gsub("%'%'", "");
 +
else
 +
break;
 +
end
 
end
 
end
+
return argument; -- done
if sep:sub(-1,-1) ~= " " then sep = sep .. " " end
+
end
if maximum ~= nil and maximum < 1 then return "", 0; end
+
 
+
--[[--------------------------< M A K E _ C O I N S _ T I T L E >----------------------------------------------
for i,person in ipairs(people) do
+
 
if is_set(person.last) then
+
Makes a title for COinS from Title and / or ScriptTitle (or any other name-script pairs)
local mask = person.mask
+
 
local one
+
Apostrophe markup (bold, italics) is stripped from each value so that the COinS metadata isn't correupted with strings
local sep_one = sep;
+
of %27%27...
if maximum ~= nil 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 first = reducetoinitials(first) 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
 
  
if is_set(person.link) and ((nil ~= person.link:find("//")) or (nil ~= person.link:find("[%[%]]"))) then
+
local function make_coins_title (title, script)
one = one .. " " .. seterror( 'bad_authorlink' ) end -- url or wikilink in author link;
+
if is_set (title) then
end
+
title = strip_apostrophe_markup (title); -- strip any apostrophe markup
table.insert( text, one )
+
else
table.insert( text, sep_one )
+
title=''; -- if not set, make sure title is an empty string
end
 
 
end
 
end
 
+
if is_set (script) then
local count = #text / 2;
+
script = script:gsub ('^%l%l%s*:%s*', ''); -- remove language prefix if present (script value may now be empty string)
if count > 0 then  
+
script = strip_apostrophe_markup (script); -- strip any apostrophe markup
if count > 1 and is_set(lastauthoramp) and not etal then
+
else
text[#text-2] = " & ";
+
script=''; -- if not set, make sure script is an empty string
end
 
text[#text] = nil;  
 
 
end
 
end
+
if is_set (title) and is_set (script) then
local result = table.concat(text) -- construct list
+
script = ' ' .. script; -- add a space before we concatenate
if etal then  
 
local etal_text = cfg.messages['et al'];
 
result = result .. " " .. etal_text;
 
 
end
 
end
+
return title .. script; -- return the concatenation
return result, count
 
 
end
 
end
  
--[[--------------------------< A N C H O R I D >--------------------------------------------------------------
+
--[[--------------------------< G E T _ C O I N S _ P A G E S >------------------------------------------------
Generates a CITEREF anchor ID if we have at least one name or a date.  Otherwise returns an empty string.
+
 
 +
Extract page numbers from external wikilinks in any of the |page=, |pages=, or |at= parameters for use in COinS.
  
 
]]
 
]]
 
+
local function get_coins_pages (pages)
function anchorid( options )
+
local pattern;
local id = table.concat( options ); -- concatenate names and year for CITEREF id
+
if not is_set (pages) then return pages; end -- if no page numbers then we're done
if is_set (id) then -- if concatenation is not an empty string
+
return "CITEREF" .. id; -- add the CITEREF portion
+
while true do
else
+
pattern = pages:match("%[(%w*:?//[^ ]+%s+)[%w%d].*%]"); -- pattern is the opening bracket, the url and following space(s): "[url "
return ''; -- return an empty string; no reason to include CITEREF id in this citation
+
if nil == pattern then break; end -- no more urls
 +
pattern = escape_lua_magic_chars (pattern); -- pattern is not a literal string; escape lua's magic pattern characters
 +
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
Gets name list from the input arguments
+
local function remove_wiki_link( str )
 +
return (str:gsub( "%[%[([^%[%]]*)%]%]", function(l)
 +
return l:gsub( "^[^|]*|(.*)$", "%1" ):gsub("^%s*(.-)%s*$", "%1");
 +
end));
 +
end
  
Searches through args in sequential order to find |lastn= and |firstn= parameters (or their aliases), and their matching link and mask parameters.
+
-- Converts a hyphen to a dash
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 function hyphen_to_dash( str )
find |last4= and |last5= then the search is done.
+
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.
  
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=.
 
 
]]
 
]]
function extractnames(args, list_name)
+
local function safe_join( tbl, duplicate_char )
local names = {}; -- table of names
+
--[[
local last; -- individual name components
+
Note: we use string functions here, rather than ustring functions.
local first;
+
local link;
+
This has considerably faster performance and should work correctly as
local mask;
+
long as the duplicate_char is strict ASCII.  The strings
local i = 1; -- loop counter/indexer
+
in tbl may be ASCII or UTF8.
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 err_msg_list_name = list_name:match ("(%w+)List") .. 's list'; -- modify AuthorList or EditorList for use in error messages if necessary
+
local str = ''; -- the output string
 
+
local comp = ''; -- what does 'comp' mean?
while true do
+
local end_chr = '';
last = selectone( args, cfg.aliases[list_name .. '-Last'], 'redundant_parameters', i ); -- search through args for name components beginning at 1
+
local trim;
first = selectone( args, cfg.aliases[list_name .. '-First'], 'redundant_parameters', i );
+
for _, value in ipairs( tbl ) do
link = selectone( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i );
+
if value == nil then value = ''; end
mask = selectone( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i );
+
 
+
if str == '' then -- if output string is empty
if first and not last then -- if there is a firstn without a matching lastn
+
str = value; -- assign value to it (first time through the loop)
table.insert( z.message_tail, { seterror( 'first_missing_last', {err_msg_list_name, i}, true ) } ); -- add this error message
+
elseif value ~= '' then
elseif not first and not last then -- if both firstn and lastn aren't found, are we done?
+
if value:sub(1,1) == '<' then -- Special case of values enclosed in spans and other markup.
count = count + 1; -- number of times we haven't found last and first
+
comp = value:gsub( "%b<>", "" ); -- remove html markup (<span>string</span> -> string)
if 2 == count then -- two missing names and we give up
+
else
break; -- normal exit or there is a two-name hole in the list; can't tell which
+
comp = value;
end
 
else -- we have last with or without a first
 
names[n] = {last = last, first = first, link = link, mask = mask}; -- add this name to our names list
 
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, { seterror( 'missing_name', {err_msg_list_name, i-1}, true ) } ); -- add this error message
 
 
end
 
end
count = 0; -- reset the counter, we're looking for two consecutive missing names
+
-- typically duplicate_char is sepc
end
+
if comp:sub(1,1) == duplicate_char then -- is first charactier same as duplicate_char? why test first character?
i = i + 1; -- point to next args location
+
--  Because individual string segments often (always?) begin with terminal punct for th
end
+
--  preceding segment: 'First element' .. 'sepc next element' .. etc?
return names; -- all done, return our list of names
+
trim = false;
end
+
end_chr = str:sub(-1,-1); -- get the last character of the output string
 
+
-- str = str .. "<HERE(enchr=" .. end_chr.. ")" -- debug stuff?
-- Populates ID table from arguments using configuration settings
+
if end_chr == duplicate_char then -- if same as separator
function extractids( args )
+
str = str:sub(1,-2); -- remove it
local id_list = {};
+
elseif end_chr == "'" then -- if it might be wikimarkup
for k, v in pairs( cfg.id_handlers ) do
+
if str:sub(-3,-1) == duplicate_char .. "''" then -- if last three chars of str are sepc''
v = selectone( args, v.parameters, 'redundant_parameters' );
+
str = str:sub(1, -4) .. "''"; -- remove them and add back ''
if is_set(v) then id_list[k] = v; end
+
elseif str:sub(-5,-1) == duplicate_char .. "]]''" then -- if last five chars of str are sepc]]''
end
+
trim = true; -- why? why do this and next differently from previous?
return id_list;
+
elseif str:sub(-4,-1) == duplicate_char .. "]''" then -- if last four chars of str are sepc]''
end
+
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
  
--[[--------------------------< B U I L D I D L I S T >--------------------------------------------------------
+
if trim then
Takes a table of IDs and turns it into a table of formatted ID outputs.
+
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
function buildidlist( id_list, options )
+
local new_list, handler = {};
+
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 module can, however, check
 +
the content of |lastn= and |firstn= to see if the names contain non-Latin (non-ASCII) characters and emit an error message
 +
when such characters are located.
 +
 
 +
Allow |lastn= to contain ASCII characters, hyphens, spaces, and apostrophes. (http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35029/)
 +
Allow |firstn= to contain ASCII characters, hyphens, spaces, apostrophes, and periods
 +
]]
  
function fallback(k) return { __index = function(t,i) return cfg.id_handlers[k][i] end } end;
+
local function is_good_vanc_name (last, first)
+
if last:find ("[^%a%-%'%s]") or first:find ("[^%a%-%'%s%.]") then
for k, v in pairs( id_list ) do
+
if true ~= Page_in_vanc_error_cat then -- if we haven't been here before then set a sticky flag
-- fallback to read-only cfg
+
Page_in_vanc_error_cat=true; -- so that if there are more than one error the category is added only once
handler = setmetatable( { ['id'] = v }, fallback(k) );
+
table.insert( z.message_tail, { set_error( 'vancouver', {}, true ) } );
+
end
if handler.mode == 'external' then
+
return false; -- not a string of latin characters; Vancouver required Romanization
table.insert( new_list, {handler.label, externallinkid( handler ) } );
+
end;
elseif handler.mode == 'internal' then
+
return true;
table.insert( new_list, {handler.label, internallinkid( handler ) } );
+
end
elseif handler.mode ~= 'manual' then
+
 
error( cfg.messages['unknown_ID_mode'] );
+
 
elseif k == 'DOI' then
+
--[[--------------------------< R E D U C E _ T O _ I N I T I A L S >------------------------------------------
table.insert( new_list, {handler.label, doi( v, options.DoiBroken ) } );
+
 
elseif k == 'ARXIV' then
+
Attempts to convert names to initials in support of |name-list-format=vanc. 
table.insert( new_list, {handler.label, arxiv( v ) } );
+
 
elseif k == 'ASIN' then
+
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/.
table.insert( new_list, {handler.label, amazon( v, options.ASINTLD ) } );
+
 
elseif k == 'LCCN' then
+
Vancouver style requires family rank designations (Jr, II, III, etc) to be rendered as Jr, 2nd, 3rd, etc. This form is not
table.insert( new_list, {handler.label, lccn( v ) } );
+
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/.
elseif k == 'OL' then
+
 
table.insert( new_list, {handler.label, openlibrary( v ) } );
+
]]
elseif k == 'PMC' then
+
 
table.insert( new_list, {handler.label, pmc( v, options.Embargo ) } );
+
local function reduce_to_initials(first)
elseif k == 'PMID' then
+
if first:match("^%u%u$") then return first end; -- when first contains just two upper-case letters, nothing to do
table.insert( new_list, {handler.label, pmid( v ) } );
+
local initials = {}
elseif k == 'ISSN' then
+
local i = 0; -- counter for number of initials
table.insert( new_list, {handler.label, issn( v ) } );
+
for word in string.gmatch(first, "[^%s%.%-]+") do -- names separated by spaces, hyphens, or periods
elseif k == 'ISBN' then
+
table.insert(initials, string.sub(word,1,1)) -- Vancouver format does not include full stops.
local ISBN = internallinkid( handler );
+
i = i + 1; -- bump the counter
if not checkisbn( v ) and not is_set(options.IgnoreISBN) then
+
if 2 <= i then break; end -- only two initials allowed in Vancouver system; if 2, quit
ISBN = ISBN .. seterror( '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
 
end
+
return table.concat(initials) -- Vancouver format does not include spaces.
function comp( a, b ) -- used in following table.sort()
+
end
return a[1] < b[1];
+
 
 +
--[[--------------------------< 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)
 +
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
 
end
 
 
table.sort( new_list, comp );
+
if sep:sub(-1,-1) ~= " " then sep = sep .. " " end
for k, v in ipairs( new_list ) do
+
if maximum ~= nil and maximum < 1 then return "", 0; end
new_list[k] = v[2];
 
end
 
 
 
return new_list;
+
for i,person in ipairs(people) do
end
+
if is_set(person.last) then
 
+
local mask = person.mask
-- Chooses one matching parameter from a list of parameters to consider
+
local one
-- Generates an error if more than one match is present.
+
local sep_one = sep;
function selectone( args, possible, error_condition, index )
+
if maximum ~= nil and i > maximum then
local value = nil;
+
etal = true;
local selected = '';
+
break;
local error_list = {};
+
elseif (mask ~= nil) then
+
local n = tonumber(mask)
if index ~= nil then index = tostring(index); end
+
if (n ~= nil) then
+
one = string.rep("&mdash;",n)
-- Handle special case of "#" replaced by empty string
 
if index == '1' then
 
for _, v in ipairs( possible ) do
 
v = v:gsub( "#", "" );
 
if is_set(args[v]) then
 
if value ~= nil and selected ~= v then
 
table.insert( error_list, v );
 
 
else
 
else
value = args[v];
+
one = mask;
selected = v;
+
sep_one = " ";
 
end
 
end
end
 
end
 
end
 
 
for _, v in ipairs( possible ) do
 
if index ~= nil then
 
v = v:gsub( "#", index );
 
end
 
if is_set(args[v]) then
 
if value ~= nil and selected ~=  v then
 
table.insert( error_list, v );
 
 
else
 
else
value = args[v];
+
one = person.last
selected = v;
+
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 is_good_vanc_name (one, first) then -- and name is all Latin characters
 +
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
 +
 
 +
if is_set(person.link) and ((nil ~= person.link:find("//")) or (nil ~= person.link:find("[%[%]]"))) then
 +
one = one .. " " .. set_error( 'bad_authorlink' ) end -- url or wikilink in author link;
 
end
 
end
 +
table.insert( text, one )
 +
table.insert( text, sep_one )
 
end
 
end
 
end
 
end
+
 
if #error_list > 0 then
+
local count = #text / 2;
local error_str = "";
+
if count > 0 then  
for _, k in ipairs( error_list ) do
+
if count > 1 and is_set(lastauthoramp) and not etal then
if error_str ~= "" then error_str = error_str .. cfg.messages['parameter-separator'] end
+
text[#text-2] = " & ";
error_str = error_str .. wrap_style ('parameter', k);
 
 
end
 
end
if #error_list > 1 then
+
text[#text] = nil;  
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, { seterror( error_condition, {error_str}, true ) } );
 
 
end
 
end
 
 
return value, selected;
+
local result = table.concat(text) -- construct list
 +
if etal then
 +
local etal_text = cfg.messages['et al'];
 +
result = result .. " " .. etal_text;
 +
end
 +
 +
return result, count
 
end
 
end
  
-- COinS metadata (see <http://ocoins.info/>) allows automated tools to parse
+
--[[--------------------------< A N C H O R _ I D >------------------------------------------------------------
-- the citation information.
+
Generates a CITEREF anchor ID if we have at least one name or a date.  Otherwise returns an empty string.
function COinS(data)
+
 
if 'table' ~= type(data) or nil == next(data) then
+
]]
return '';
+
 
 +
local function anchor_id( options )
 +
local id = table.concat( options ); -- 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
+
end
local ctx_ver = "Z39.88-2004";
+
 
+
--[[--------------------------< E X T R A C T _ N A M E S >----------------------------------------------------
-- treat table strictly as an array with only set values.
+
Gets name list from the input arguments
local OCinSoutput = setmetatable( {}, {
+
 
__newindex = function(self, key, value)
+
Searches through args in sequential order to find |lastn= and |firstn= parameters (or their aliases), and their matching link and mask parameters.
if is_set(value) then
+
Stops searching when both |lastn= and |firstn= are not found in args after two sequential attempts: found |last1=, |last2=, and |last3= but doesn't
rawset( self, #self+1, table.concat{ key, '=', mw.uri.encode( removewikilink( value ) ) } );
+
find |last4= and |last5= then the search is done.
end
+
 
 +
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 pattern = ",? *'*[Ee][Tt] *[Aa][Ll][%.']*$" -- variations on the 'et al' theme
 +
 +
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 );
 +
 
 +
local name = tostring(last);
 +
if name:match (pattern) then -- varients on et al.
 +
last = name:gsub (pattern, ''); -- if found, remove
 +
etal = true;
 +
end
 +
name = tostring(first);
 +
if name:match (pattern) then -- varients on et al.
 +
first = name:gsub (pattern, ''); -- if found, remove
 +
etal = true;
 
end
 
end
});
+
 
+
if first and not last then -- if there is a firstn without a matching lastn
if is_set(data.Chapter) then
+
table.insert( z.message_tail, { set_error( 'first_missing_last', {err_msg_list_name, i}, true ) } ); -- add this error message
OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
+
elseif not first and not last then -- if both firstn and lastn aren't found, are we done?
OCinSoutput["rft.genre"] = "bookitem";
+
count = count + 1; -- number of times we haven't found last and first
OCinSoutput["rft.atitle"] = data.Chapter;
+
if 2 == count then -- two missing names and we give up
OCinSoutput["rft.btitle"] = data.Title;
+
break; -- normal exit or there is a two-name hole in the list; can't tell which
elseif is_set(data.Periodical) then
+
end
OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:journal";
+
else -- we have last with or without a first
OCinSoutput["rft.genre"] = "article";
+
names[n] = {last = last, first = first, link = link, mask = mask}; -- add this name to our names list
OCinSoutput["rft.jtitle"] = data.Periodical;
+
n = n + 1; -- point to next location in the names table
OCinSoutput["rft.atitle"] = data.Title;
+
if 1 == count then -- if the previous name was missing
else
+
table.insert( z.message_tail, { set_error( 'missing_name', {err_msg_list_name, i-1}, true ) } ); -- add this error message
OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
+
end
OCinSoutput["rft.genre"] = "book"
+
count = 0; -- reset the counter, we're looking for two consecutive missing names
OCinSoutput["rft.btitle"] = data.Title;
+
end
 +
i = i + 1; -- point to next args location
 
end
 
end
 
 
OCinSoutput["rft.place"] = data.PublicationPlace;
+
if true == etal then
OCinSoutput["rft.date"] = data.Date;
+
table.insert( z.maintenance_cats, 'CS1 maint: Explicit use of et al.'); -- add to maint category
OCinSoutput["rft.series"] = data.Series;
+
end
OCinSoutput["rft.volume"] = data.Volume;
+
return names, etal; -- all done, return our list of names
OCinSoutput["rft.issue"] = data.Issue;
+
end
OCinSoutput["rft.pages"] = data.Pages;
+
 
OCinSoutput["rft.edition"] = data.Edition;
+
-- Populates ID table from arguments using configuration settings
OCinSoutput["rft.pub"] = data.PublisherName;
+
local function extract_ids( args )
+
local id_list = {};
for k, v in pairs( data.ID_list ) do
+
for k, v in pairs( cfg.id_handlers ) do
local id, value = cfg.id_handlers[k].COinS;
+
v = select_one( args, v.parameters, 'redundant_parameters' );
if k == 'ISBN' then value = cleanisbn( v ); else value = v; end
+
if is_set(v) then id_list[k] = v; end
if string.sub( id or "", 1, 4 ) == 'info' then
 
OCinSoutput["rft_id"] = table.concat{ id, "/", v };
 
else
 
OCinSoutput[ id ] = value;
 
end
 
 
end
 
end
 +
return id_list;
 +
end
 +
 +
--[[--------------------------< B U I L D _ I D _ L I S T >--------------------------------------------------------
 +
Takes a table of IDs and turns it into a table of formatted ID outputs.
 +
 +
]]
 +
local function build_id_list( id_list, options )
 +
local new_list, handler = {};
 +
 +
function fallback(k) return { __index = function(t,i) return cfg.id_handlers[k][i] end } end;
 
 
local last, first;
+
for k, v in pairs( id_list ) do
for k, v in ipairs( data.Authors ) do
+
-- fallback to read-only cfg
last, first = v.last, v.first;
+
handler = setmetatable( { ['id'] = v }, fallback(k) );
if k == 1 then
+
if is_set(last) then
+
if handler.mode == 'external' then
OCinSoutput["rft.aulast"] = last;
+
table.insert( new_list, {handler.label, external_link_id( handler ) } );
end
+
elseif handler.mode == 'internal' then
if is_set(first) then  
+
table.insert( new_list, {handler.label, internal_link_id( handler ) } );
OCinSoutput["rft.aufirst"] = first;
+
elseif handler.mode ~= 'manual' then
 +
error( cfg.messages['unknown_ID_mode'] );
 +
elseif k == 'DOI' then
 +
table.insert( new_list, {handler.label, doi( v, options.DoiBroken ) } );
 +
elseif k == 'ARXIV' then
 +
table.insert( new_list, {handler.label, arxiv( v ) } );
 +
elseif k == 'ASIN' then
 +
table.insert( new_list, {handler.label, amazon( v, options.ASINTLD ) } );
 +
elseif k == 'LCCN' then
 +
table.insert( new_list, {handler.label, lccn( v ) } );
 +
elseif k == 'OL' then
 +
table.insert( new_list, {handler.label, openlibrary( v ) } );
 +
elseif k == 'PMC' then
 +
table.insert( new_list, {handler.label, pmc( v, options.Embargo ) } );
 +
elseif k == 'PMID' then
 +
table.insert( new_list, {handler.label, pmid( 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
 
end
end
+
table.insert( new_list, {handler.label, ISBN } );
if is_set(last) and is_set(first) then
+
elseif k == 'USENETID' then
OCinSoutput["rft.au"] = table.concat{ last, ", ", first };
+
table.insert( new_list, {handler.label, message_id( v ) } );
elseif is_set(last) then
+
else
OCinSoutput["rft.au"] = last;
+
error( cfg.messages['unknown_manual_ID'] );
 
end
 
end
 
end
 
end
 
 
OCinSoutput.rft_id = data.URL;
+
function comp( a, b ) -- used in following table.sort()
OCinSoutput.rfr_id = table.concat{ "info:sid/", mw.site.server:match( "[^/]*$" ), ":", data.RawPage };
+
return a[1] < b[1];
OCinSoutput = setmetatable( OCinSoutput, nil );
+
end
 +
 +
table.sort( new_list, comp );
 +
for k, v in ipairs( new_list ) do
 +
new_list[k] = v[2];
 +
end
 
 
-- sort with version string always first, and combine.
+
return new_list;
table.sort( OCinSoutput );
 
table.insert( OCinSoutput, 1, "ctx_ver=" .. ctx_ver );  -- such as "Z39.88-2004"
 
return table.concat(OCinSoutput, "&");
 
 
end
 
end
 +
 
  
 
+
-- COinS metadata (see <http://ocoins.info/>) allows automated tools to parse
--[[--------------------------< G E T _ I S O 6 3 9 _ C O D E >------------------------------------------------
+
-- the citation information.
 
+
local function COinS(data)
Validates language names provided in |language= parameter if not an ISO639-1 code.  Handles the special case that is Norwegian where
+
if 'table' ~= type(data) or nil == next(data) then
ISO639-1 code 'no' is mapped to language name 'Norwegian Bokmål' by Extention:CLDR.
+
return '';
 
+
end
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
+
local ctx_ver = "Z39.88-2004";
with the code.  When there is no match, we return the original language name string.
+
 
+
-- treat table strictly as an array with only set values.
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 OCinSoutput = setmetatable( {}, {
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
+
__newindex = function(self, key, value)
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(value) then
returns only the Wikimedia language name.
+
rawset( self, #self+1, table.concat{ key, '=', mw.uri.encode( remove_wiki_link( value ) ) } );
 
 
Adapted from code taken from Module:Check ISO 639-1.
 
]]
 
 
 
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
 
end
return name, code; -- found it, return name to ensure proper capitalization and the ISO639-1 code
+
end
 +
});
 +
 +
if is_set(data.Chapter) then
 +
OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
 +
OCinSoutput["rft.genre"] = "bookitem";
 +
OCinSoutput["rft.atitle"] = data.Chapter;
 +
OCinSoutput["rft.btitle"] = data.Title;
 +
elseif is_set(data.Periodical) then
 +
OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:journal";
 +
OCinSoutput["rft.genre"] = "article";
 +
OCinSoutput["rft.jtitle"] = data.Periodical;
 +
OCinSoutput["rft.atitle"] = data.Title;
 +
else
 +
OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
 +
OCinSoutput["rft.genre"] = "book"
 +
OCinSoutput["rft.btitle"] = data.Title;
 +
end
 +
 +
OCinSoutput["rft.place"] = data.PublicationPlace;
 +
OCinSoutput["rft.date"] = data.Date;
 +
OCinSoutput["rft.series"] = data.Series;
 +
OCinSoutput["rft.volume"] = data.Volume;
 +
OCinSoutput["rft.issue"] = data.Issue;
 +
OCinSoutput["rft.pages"] = data.Pages;
 +
OCinSoutput["rft.edition"] = data.Edition;
 +
OCinSoutput["rft.pub"] = data.PublisherName;
 +
 +
for k, v in pairs( data.ID_list ) do
 +
local id, value = cfg.id_handlers[k].COinS;
 +
if k == 'ISBN' then value = clean_isbn( v ); else value = v; end
 +
if string.sub( id or "", 1, 4 ) == 'info' then
 +
OCinSoutput["rft_id"] = table.concat{ id, "/", v };
 +
else
 +
OCinSoutput[ id ] = value;
 
end
 
end
 
end
 
end
return lang; -- not valid language; return language in original case and nil for ISO639-1 code
+
end
+
local last, first;
 
+
for k, v in ipairs( data.Authors ) do
--[[--------------------------< L A N G U A G E _ P A R A M E T E R >------------------------------------------
+
last, first = v.last, v.first;
 
+
if k == 1 then
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.
+
if is_set(last) then
 
+
OCinSoutput["rft.aulast"] = last;
There is an exception.  There are three ISO639-1 codes for Norewegian language variants.  There are two official variants: Norwegian Bokmål (code 'nb') and
+
end
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 is_set(first) 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.
+
OCinSoutput["rft.aufirst"] = first;
 
+
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
+
end
return 'Norwegian' when editors use |language=no.  We presume that editors don't know about the variants or can't descriminate between them.
+
if is_set(last) and is_set(first) then
 
+
OCinSoutput["rft.au"] = table.concat{ last, ", ", first };
See Help talk:Citation Style_1#An ISO 639-1 language name test
+
elseif is_set(last) then
 
+
OCinSoutput["rft.au"] = last;
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.
 
 
 
]]
 
 
 
function language_parameter (lang, namespace)
 
local code; -- the ISO639-1 two character code
 
local name; -- the language name
 
local test='';
 
 
if 0 == namespace and (('en' == lang:lower()) or ('english' == lang:lower())) then
 
table.insert (z.maintenance_cats, 'CS1 maint: English language specified'); -- add maintenance category if |language=English or |language=en in article space
 
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 0 == namespace and 'en' ~= code then -- is this page main / article space and English not the language?
 
table.insert( z.properties_cats, 'CS1 ' .. name .. '-language sources (' .. code .. ')'); -- in main space and not English: categorize
 
 
end
 
end
else
 
table.insert (z.maintenance_cats, 'CS1 maint: Unrecognized language'); -- add maintenance category when |language= does not appear to be ISO 639-1 language
 
 
end
 
end
return (" " .. wrap_msg ('language', name)); -- wrap with '(in ...)'
+
 +
OCinSoutput.rft_id = data.URL;
 +
OCinSoutput.rfr_id = table.concat{ "info:sid/", mw.site.server:match( "[^/]*$" ), ":", data.RawPage };
 +
OCinSoutput = setmetatable( OCinSoutput, nil );
 +
 +
-- 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
 
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.
 
  
]]
+
--[[--------------------------< G E T _ I S O 6 3 9 _ C O D E >------------------------------------------------
  
function get_settings_from_cite_class (ps, ref, cite_class)
+
Validates language names provided in |language= parameter if not an ISO639-1 code.  Handles the special case that is Norwegian where
local sep;
+
ISO639-1 code 'no' is mapped to language name 'Norwegian Bokmål' by Extention:CLDR.
if (cite_class == "citation") then -- for citation templates (CS2)
 
sep = ','; -- set citation separator to its default (comma)
 
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
 
else -- not a citation template so CS1
 
sep = '.'; -- set cite xxx separator to its default (period)
 
if not is_set (ps) then -- if |postscript= has not been set
 
ps = '.'; -- set cs1 default
 
end
 
end
 
  
return sep, ps, ref -- return them all
+
Returns the language name and associated ISO639-1 code.  Because case of the source may be incorrect or different from the case that Wikimedia
end
+
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.
  
--[[--------------------------< S E T _ S T Y L E >------------------------------------------------------------
+
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= parameterFor example, if |language=Samaritan Aramaic, that name will be
Establish basic style settings to be used when rendering the citationUses |mode= if set and valid or uses
+
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
config.CitationClass from the template's #invoke: to establish style.
+
returns only the Wikimedia language name.
  
 +
Adapted from code taken from Module:Check ISO 639-1.
 
]]
 
]]
  
function set_style (mode, ps, ref, cite_class)
+
local function get_iso639_code (lang)
local sep;
+
if 'norwegian' == lang:lower() then -- special case related to Wikimedia remap of code 'no' at Extension:CLDR
if is_set (mode) then
+
return 'Norwegian', 'no'; -- Make sure rendered version is properly capitalized
if 'cs2' == mode then -- if this template is to be rendered in CS2 (citation) style
+
end
sep = ','; -- separate elements with a comma
+
if not is_set (ps) then -- unless explicitely set to something
+
local languages = mw.language.fetchLanguageNames('en', 'all') -- get a list of language names known to Wikimedia
ps = ''; -- make sure it isn't nil
+
-- ('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
 
end
if not is_set (ref) then -- unless explicitely set to something
+
return name, code; -- found it, return name to ensure proper capitalization and the ISO639-1 code
ref = 'harv'; -- set so this template renders with CITEREF anchor id
 
end
 
elseif 'cs1' == mode then -- if this template is to be rendered in CS1 (cite xxx) style
 
sep = '.'; -- separate elements with a period
 
if not is_set (ps) then -- unless explicitely set to something
 
ps = '.'; -- terminate the rendered citation with a period
 
end
 
else -- anything but cs1 or cs2
 
table.insert( z.message_tail, { seterror( 'invalid_param_val', {'mode', mode}, true ) } ); -- add error message
 
sep, ps, ref = get_settings_from_cite_class (ps, ref, cite_class); -- get settings based on the template's CitationClass
 
 
end
 
end
else -- when |mode= empty or omitted
 
sep, ps, ref = get_settings_from_cite_class (ps, ref, cite_class); -- get settings based on the template's CitationClass
 
 
end
 
end
if 'none' == ps:lower() then -- if assigned value is 'none' then
+
return lang; -- not valid language; return language in original case and nil for ISO639-1 code
ps = ''; -- set to empty string
 
end
 
 
return sep, ps, ref
 
 
end
 
end
  
 +
--[[--------------------------< L A N G U A G E _ P A R A M E T E R >------------------------------------------
  
--[[--------------------------< C I T A T I O N 0 >------------------------------------------------------------
+
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.
This is the main function doing the majority of the citation
 
formatting.
 
]]
 
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
+
There is an exception.  There are three ISO639-1 codes for Norewegian language variants.  There are two official variants: Norwegian Bokmål (code 'nb') and
local PPrefix = A['PPrefix']
+
Norwegian Nynorsk (code 'nn').  The third, code 'no',  is defined by ISO639-1 as 'Norwegian' though in Norway this is pretty much meaninglessHowever, it appears
local PPPrefix = A['PPPrefix']
+
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.
if is_set( A['NoPP'] ) then PPPrefix = "" PPrefix = "" end
 
 
-- Pick out the relevant fields from the argumentsDifferent citation templates
 
-- define different field names for the same underlying things.
 
local Authors = A['Authors'];
 
local a = extractnames( args, 'AuthorList' );
 
  
local Coauthors = A['Coauthors'];
+
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
local Others = A['Others'];
+
return 'Norwegian' when editors use |language=no.  We presume that editors don't know about the variants or can't descriminate between them.
local Editors = A['Editors'];
 
local e = extractnames( args, 'EditorList' );
 
  
local NameListFormat = A['NameListFormat']; -- replaces |author-format= and |editor-format=
+
See Help talk:Citation Style_1#An ISO 639-1 language name test
if is_set (NameListFormat) and ('vanc' ~= NameListFormat) then -- only accepted value for this parameter is 'vanc'
+
 
table.insert( z.message_tail, { seterror( 'invalid_param_val', {'name-list-format', NameListFormat}, true ) } ); -- not vanc so add error message
+
When |language= contains a valid ISO639-1 code, the page is assigned to the category for that code: Category:Norwegian-language sources (no) if
NameListFormat = ''; -- set to empty string
+
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.
 +
 
 +
]]
 +
 
 +
local function language_parameter (lang, namespace)
 +
local code; -- the ISO639-1 two character code
 +
local name; -- the language name
 +
local test='';
 +
 +
if 0 == namespace and (('en' == lang:lower()) or ('english' == lang:lower())) then
 +
table.insert (z.maintenance_cats, 'CS1 maint: English language specified'); -- add maintenance category if |language=English or |language=en in article space
 +
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
 
end
  
local Year = A['Year'];
+
if is_set (name) then -- if Language specified a valid ISO639-1 code
local PublicationDate = A['PublicationDate'];
+
code = lang:lower(); -- save it
local OrigYear = A['OrigYear'];
+
else
local Date = A['Date'];
+
name, code = get_iso639_code (lang); -- attempt to get code from name (assign name here so that we are sure of proper capitalization)
local LayDate = A['LayDate'];
+
end
------------------------------------------------- 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'];
 
local Chapter = A['Chapter'];
 
local ChapterLink = A['ChapterLink']; -- deprecated
 
local TransChapter = A['TransChapter'];
 
local TitleType = A['TitleType'];
 
local Degree = A['Degree'];
 
local Docket = A['Docket'];
 
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 ConferenceURL = A['ConferenceURL'];
 
local ConferenceURLorigin = A:ORIGIN('ConferenceURL'); -- get name of parameter that holds ConferenceURL
 
local Periodical = A['Periodical'];
 
  
local Series = A['Series'];
+
if is_set (code) then
local Volume = A['Volume'];
+
if 'no' == code then name = 'Norwegian' end; -- override wikimedia when code is 'no'
local Issue = A['Issue'];
+
if 0 == namespace and 'en' ~= code then -- is this page main / article space and English not the language?
local Position = '';
+
table.insert( z.properties_cats, 'CS1 ' .. name .. '-language sources (' .. code .. ')'); -- in main space and not English: categorize
local Page = A['Page'];
+
end
local Pages = hyphentodash( A['Pages'] );
+
else
local At = A['At'];
+
table.insert (z.maintenance_cats, 'CS1 maint: Unrecognized language'); -- add maintenance category when |language= does not appear to be ISO 639-1 language
 
+
end
local Edition = A['Edition'];
+
return (" " .. wrap_msg ('language', name)); -- wrap with '(in ...)'
local PublicationPlace = A['PublicationPlace']
+
end
local Place = A['Place'];
 
 
local PublisherName = A['PublisherName'];
 
local RegistrationRequired = A['RegistrationRequired'];
 
local SubscriptionRequired = A['SubscriptionRequired'];
 
local Via = A['Via'];
 
local AccessDate = A['AccessDate'];
 
local ArchiveDate = A['ArchiveDate'];
 
local Agency = A['Agency'];
 
local DeadURL = A['DeadURL']
 
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'];
 
local Embargo = A['Embargo'];
 
  
local ID_list = extractids( args );
+
--[[--------------------------< 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 Quote = A['Quote'];
+
]]
  
local LayURL = A['LayURL'];
+
local function get_settings_from_cite_class (ps, ref, cite_class)
local LaySource = A['LaySource'];
+
local sep;
local Transcript = A['Transcript'];
+
if (cite_class == "citation") then -- for citation templates (CS2)
local TranscriptURL = A['TranscriptURL']
+
sep = ','; -- set citation separator to its default (comma)
local TranscriptURLorigin = A:ORIGIN('TranscriptURL'); -- get name of parameter that holds TranscriptURL
+
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
 +
else -- not a citation template so CS1
 +
sep = '.'; -- set cite xxx separator to its default (period)
 +
if not is_set (ps) then -- if |postscript= has not been set
 +
ps = '.'; -- set cs1 default
 +
end
 +
end
 +
 
 +
return sep, ps, ref -- return them all
 +
end
  
local LastAuthorAmp = A['LastAuthorAmp'];
+
--[[--------------------------< S E T _ S T Y L E >------------------------------------------------------------
local no_tracking_cats = A['NoTracking'];
 
  
--these are used by cite interview
+
Establish basic style settings to be used when rendering the citation.  Uses |mode= if set and valid or uses
local Callsign = A['Callsign'];
+
config.CitationClass from the template's #invoke: to establish style.
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; -- used in the COinS metadata
 
  
-- set default parameter values defined by |mode= parameter.  If |mode= is empty or omitted, use CitationClass to set these values
+
local function set_style (mode, ps, ref, cite_class)
local sepc; -- separator between citation elements for CS1 a period, for CS2, a comma
+
local sep;
local PostScript;
+
if is_set (mode) then
local Ref;
+
if 'cs2' == mode then -- if this template is to be rendered in CS2 (citation) style
sepc, PostScript, Ref = set_style (A['Mode']:lower(), A['PostScript'], A['Ref'], config.CitationClass);
+
sep = ','; -- separate elements with a comma
use_lowercase = ( sepc == ',' ); -- used to control capitalization for certain static text
+
if not is_set (ps) then -- unless explicitely set to something
 
+
ps = ''; -- make sure it isn't nil
--check this page to see if it is in one of the namespaces that cs1 is not supposed to add to the error categories.
+
end
if not is_set(no_tracking_cats) then -- ignore if we are already not going to categorize this page
+
if not is_set (ref) then -- unless explicitely set to something
if inArray (this_page.nsText, cfg.uncategorized_namespaces) then
+
ref = 'harv'; -- set so this template renders with CITEREF anchor id
no_tracking_cats = "true"; -- set no_tracking_cats
+
end
 +
elseif 'cs1' == mode then -- if this template is to be rendered in CS1 (cite xxx) style
 +
sep = '.'; -- separate elements with a period
 +
if not is_set (ps) then -- unless explicitely set to something
 +
ps = '.'; -- terminate the rendered citation with a period
 +
end
 +
else -- anything but cs1 or cs2
 +
table.insert( z.message_tail, { set_error( 'invalid_param_val', {'mode', mode}, true ) } ); -- add error message
 +
sep, ps, ref = get_settings_from_cite_class (ps, ref, cite_class); -- get settings based on the template's CitationClass
 
end
 
end
end
+
else -- when |mode= empty or omitted
 
+
sep, ps, ref = get_settings_from_cite_class (ps, ref, cite_class); -- get settings based on the template's CitationClass
-- check for extra |page=, |pages= or |at= parameters.
+
end
if is_set(Page) then
+
if 'none' == ps:lower() then -- if assigned value is 'none' then
if is_set(Pages) or is_set(At) then
+
ps = ''; -- set to empty string
Page = Page .. " " .. seterror('extra_pages'); -- add error message
 
Pages = ''; -- unset the others
 
At = '';
 
end
 
elseif is_set(Pages) then
 
if is_set(At) then
 
Pages = Pages .. " " .. seterror('extra_pages'); -- add error messages
 
At = ''; -- unset
 
end
 
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
+
return sep, ps, ref
+
end
--[[
 
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
+
--[[--------------------------< C I T A T I O N 0 >------------------------------------------------------------
TODO: script-title to script-chapter if and when we support script-chapter
+
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 Encyclopedia = A['Encyclopedia'];
+
local i
 +
local PPrefix = A['PPrefix']
 +
local PPPrefix = A['PPPrefix']
 +
if is_set( A['NoPP'] ) then PPPrefix = "" PPrefix = "" end
 +
 +
-- Pick out the relevant fields from the arguments.  Different citation templates
 +
-- define different field names for the same underlying things.
 +
local Authors = A['Authors'];
 +
local author_etal;
 +
local a, author_etal = extract_names( args, 'AuthorList' );
 +
 
 +
local Coauthors = A['Coauthors'];
 +
local Others = A['Others'];
 +
local Editors = A['Editors'];
 +
local editor_etal;
 +
local e, editor_etal = extract_names( args, 'EditorList' );
 +
 
 +
local NameListFormat = A['NameListFormat']; -- replaces |author-format= and |editor-format=
 +
if is_set (NameListFormat) and ('vanc' ~= NameListFormat) then -- only accepted value for this parameter is 'vanc'
 +
table.insert( z.message_tail, { set_error( 'invalid_param_val', {'name-list-format', NameListFormat}, true ) } ); -- not vanc so add error message
 +
NameListFormat = ''; -- set to empty string
 +
end
  
if ( config.CitationClass == "encyclopaedia" ) or ( config.CitationClass == "citation" and is_set (Encyclopedia)) then -- test code for citation
+
local Year = A['Year'];
if is_set(Periodical) then -- Periodical is set when |encyclopedia is set
+
local PublicationDate = A['PublicationDate'];
if is_set(Title) then
+
local OrigYear = A['OrigYear'];
if not is_set(Chapter) then
+
local Date = A['Date'];
Chapter = Title; -- |encyclopedia and |title are set so map |title to |article and |encyclopedia to |title
+
local LayDate = A['LayDate'];
TransChapter = TransTitle;
+
------------------------------------------------- Get title data
ChapterURL = URL;
+
local Title = A['Title'];
Title = Periodical;
+
local ScriptTitle = A['ScriptTitle'];
ChapterFormat = Format;
+
local BookTitle = A['BookTitle'];
Periodical = ''; -- redundant so unset
+
local Conference = A['Conference'];
TransTitle = ''; -- redundant so unset
+
local TransTitle = A['TransTitle'];
URL = ''; -- redundant so unset
+
local TitleNote = A['TitleNote'];
Format = ''; -- redundant so unset
+
local TitleLink = A['TitleLink'];
end
+
local Chapter = A['Chapter'];
else -- |title not set
+
local ChapterLink = A['ChapterLink']; -- deprecated
Title = Periodical; -- |encyclopedia set and |article set or not set so map |encyclopedia to |title
+
local TransChapter = A['TransChapter'];
Periodical = ''; -- redundant so unset
+
local TitleType = A['TitleType'];
end
+
local Degree = A['Degree'];
end
+
local Docket = A['Docket'];
end
+
local ArchiveURL = A['ArchiveURL'];
 
+
local URL = A['URL']
-- Special case for cite techreport.
+
local URLorigin = A:ORIGIN('URL'); -- get name of parameter that holds URL
if (config.CitationClass == "techreport") then -- special case for cite techreport
+
local ChapterURL = A['ChapterURL'];
if is_set(Issue) then -- cite techreport uses 'number', which other citations aliase to 'issue'
+
local ChapterURLorigin = A:ORIGIN('ChapterURL'); -- get name of parameter that holds ChapterURL
if not is_set(ID) then -- can we use ID for the "number"?
+
local ConferenceURL = A['ConferenceURL'];
ID = Issue; -- yes, use it
+
local ConferenceURLorigin = A:ORIGIN('ConferenceURL'); -- get name of parameter that holds ConferenceURL
Issue = ""; -- unset Issue so that "number" isn't duplicated in the rendered citation or COinS metadata
+
local Periodical = A['Periodical'];
else -- can't use ID so emit error message
+
 
ID = ID .. " " .. seterror('redundant_parameters', '<code>&#124;id=</code> and <code>&#124;number=</code>');
+
local Series = A['Series'];
end
+
local Volume = A['Volume'];
end
+
local Issue = A['Issue'];
end
+
local Position = '';
 +
local Page = A['Page'];
 +
local Pages = hyphen_to_dash( A['Pages'] );
 +
local At = A['At'];
  
-- special case for cite interview
+
local Edition = A['Edition'];
if (config.CitationClass == "interview") then
+
local PublicationPlace = A['PublicationPlace']
if is_set(Program) then
+
local Place = A['Place'];
ID = ' ' .. Program;
+
end
+
local PublisherName = A['PublisherName'];
if is_set(Callsign) then
+
local RegistrationRequired = A['RegistrationRequired'];
if is_set(ID) then
+
local SubscriptionRequired = A['SubscriptionRequired'];
ID = ID .. sepc .. ' ' .. Callsign;
+
local Via = A['Via'];
else
+
local AccessDate = A['AccessDate'];
ID = ' ' .. Callsign;
+
local ArchiveDate = A['ArchiveDate'];
end
+
local Agency = A['Agency'];
end
+
local DeadURL = A['DeadURL']
if is_set(City) then
+
local Language = A['Language'];
if is_set(ID) then
+
local Format = A['Format'];
ID = ID .. sepc .. ' ' .. City;
+
local ChapterFormat = A['ChapterFormat'];
else
+
local DoiBroken = A['DoiBroken'];
ID = ' ' .. City;
+
local ID = A['ID'];
end
+
local ASINTLD = A['ASINTLD'];
end
+
local IgnoreISBN = A['IgnoreISBN'];
 +
local Embargo = A['Embargo'];
 +
 
 +
local ID_list = extract_ids( args );
 +
 
 +
local Quote = A['Quote'];
  
if is_set(Others) then
+
local LayURL = A['LayURL'];
if is_set(TitleType) then
+
local LaySource = A['LaySource'];
Others = ' ' .. TitleType .. ' with ' .. Others;
+
local Transcript = A['Transcript'];
TitleType = '';
+
local TranscriptURL = A['TranscriptURL']
else
+
local TranscriptURLorigin = A:ORIGIN('TranscriptURL'); -- get name of parameter that holds TranscriptURL
Others = ' ' .. 'Interview with ' .. Others;
 
end
 
else
 
Others = '(Interview)';
 
end
 
end
 
  
-- special case for cite mailing list
+
local LastAuthorAmp = A['LastAuthorAmp'];
if (config.CitationClass == "mailinglist") then
+
local no_tracking_cats = A['NoTracking'];
Periodical = A ['MailingList'];
 
end
 
  
--Account for the oddity that is {{cite journal}} with |pmc= set and |url= not set
+
--these are used by cite interview
if config.CitationClass == "journal" and not is_set(URL) and is_set(ID_list['PMC']) then
+
local Callsign = A['Callsign'];
if not is_embargoed(Embargo) then
+
local City = A['City'];
URL=cfg.id_handlers['PMC'].prefix .. ID_list['PMC']; -- set url to be the same as the PMC external link if not embargoed
+
local Program = A['Program'];
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
 
  
-- Account for the oddity that is {{cite conference}}, before generation of COinS data.
+
--local variables that are not cs1 parameters
if 'conference' == config.CitationClass then
+
local use_lowercase; -- controls capitalization of certain static text
if is_set(BookTitle) then
+
local this_page = mw.title.getCurrentTitle(); -- also used for COinS and for language
Chapter = Title;
+
local anchor_year; -- used in the CITEREF identifier
-- ChapterLink = TitleLink; -- |chapterlink= is deprecated
+
local COinS_date; -- used in the COinS metadata
ChapterURL = URL;
+
 
ChapterURLorigin = URLorigin;
+
-- set default parameter values defined by |mode= parameter.  If |mode= is empty or omitted, use CitationClass to set these values
URLorigin = '';
+
local sepc; -- separator between citation elements for CS1 a period, for CS2, a comma
ChapterFormat = Format;
+
local PostScript;
TransChapter = TransTitle;
+
local Ref;
Title = BookTitle;
+
sepc, PostScript, Ref = set_style (A['Mode']:lower(), A['PostScript'], A['Ref'], config.CitationClass);
Format = '';
+
use_lowercase = ( sepc == ',' ); -- used to control capitalization for certain static text
-- TitleLink = '';
+
 
TransTitle = '';
+
--check this page to see if it is in one of the namespaces that cs1 is not supposed to add to the error categories.
URL = '';
+
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
 
end
else
 
Conference = ''; -- not cite conference so make sure this is empty string
 
 
end
 
end
  
-- Account for the oddity that is {{cite episode}}, before generation of COinS data.
+
-- check for extra |page=, |pages= or |at= parameters.  
--[[ -- {{cite episode}} is not currently supported by this module
+
if is_set(Page) then
if config.CitationClass == "episode" then
+
if is_set(Pages) or is_set(At) then
local AirDate = A['AirDate'];
+
Page = Page .. " " .. set_error('extra_pages'); -- add error message
local SeriesLink = A['SeriesLink'];
+
Pages = ''; -- unset the others
local Season = A['Season'];
+
At = '';
local SeriesNumber = A['SeriesNumber'];
+
end
local Network = A['Network'];
+
elseif is_set(Pages) then
local Station = A['Station'];
+
if is_set(At) then
local s, n = {}, {};
+
Pages = Pages .. " " .. set_error('extra_pages'); -- add error messages
local Sep = (first_set(A["SeriesSeparator"], A["Separator"]) or "") .. " ";
+
At = ''; -- unset
+
end
if is_set(Issue) then table.insert(s, cfg.messages["episode"] .. " " .. Issue); Issue = ''; end
+
end
if is_set(Season) then table.insert(s, cfg.messages["season"] .. " " .. Season); end
+
 
if is_set(SeriesNumber) then table.insert(s, cfg.messages["series"] .. " " .. SeriesNumber); end
+
-- both |publication-place= and |place= (|location=) allowed if different
if is_set(Network) then table.insert(n, Network); end
+
if not is_set(PublicationPlace) and is_set(Place) then
if is_set(Station) then table.insert(n, Station); end
+
PublicationPlace = Place; -- promote |place= (|location=) to |publication-place
+
end
Date = Date or AirDate;
+
Chapter = Title;
+
if PublicationPlace == Place then Place = ''; end -- don't need both if they are the same
ChapterLink = TitleLink;
+
TransChapter = TransTitle;
+
--[[
Title = Series;
+
Parameter remapping for cite encyclopedia:
TitleLink = SeriesLink;
+
When the citation has these parameters:
TransTitle = '';
+
|encyclopedia and |title then map |title to |article and |encyclopedia to |title
+
|encyclopedia and |article then map |encyclopedia to |title
Series = table.concat(s, Sep);
+
|encyclopedia then map |encyclopedia to |title
ID = table.concat(n, Sep);
+
 
end
+
|trans_title maps to |trans_chapter when |title is re-mapped
-- end of {{cite episode}} stuff]]
+
|url maps to |chapterurl when |title is remapped
 +
 
 +
All other combinations of |encyclopedia, |title, and |article are not modified
 +
TODO: script-title to script-chapter if and when we support script-chapter
 +
]]
  
-- 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.
+
local Encyclopedia = A['Encyclopedia'];
if is_set(Date) then
+
 
if is_set (Year) then
+
if ( config.CitationClass == "encyclopaedia" ) or ( config.CitationClass == "citation" and is_set (Encyclopedia)) then -- test code for citation
table.insert( z.maintenance_cats, "CS1 maint: Date and year"); -- add to maint category
+
if is_set(Periodical) then -- Periodical is set when |encyclopedia is set
end
+
if is_set(Title) then
else
+
if not is_set(Chapter) then
Date = Year; -- promote Year to Date
+
Chapter = Title; -- |encyclopedia and |title are set so map |title to |article and |encyclopedia to |title
Year = nil; -- make nil so Year as empty string isn't used for CITEREF
+
TransChapter = TransTitle;
if is_set(Date) then
+
ChapterURL = URL;
local Month = A['Month'];
+
Title = Periodical;
if is_set(Month) then
+
ChapterFormat = Format;
Date = Month .. " " .. Date;
+
Periodical = ''; -- redundant so unset
 +
TransTitle = ''; -- redundant so unset
 +
URL = ''; -- redundant so unset
 +
Format = ''; -- redundant so unset
 +
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
elseif 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
 
end
 
end
  
if PublicationDate == Date then PublicationDate = ''; end -- if PublicationDate is same as Date, don't display in rendered citation
+
-- Special case for cite techreport.
 
+
if (config.CitationClass == "techreport") then -- special case for cite techreport
 
+
if is_set(Issue) then -- cite techreport uses 'number', which other citations aliase to 'issue'
--[[
+
if not is_set(ID) then -- can we use ID for the "number"?
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
+
ID = Issue; -- yes, use it
we get the date used in the metadata.
+
Issue = ""; -- unset Issue so that "number" isn't duplicated in the rendered citation or COinS metadata
 
+
else -- can't use ID so emit error message
Date validation supporting code is in Module:Citation/CS1/Date_validation
+
ID = ID .. " " .. set_error('redundant_parameters', '<code>&#124;id=</code> and <code>&#124;number=</code>');
]]
+
end
anchor_year, COinS_date, error_message = dates({['accessdate']=AccessDate, ['airdate']=AirDate, ['archivedate']=ArchiveDate, ['date']=Date, ['doi_brokendate']=DoiBroken,
+
end
['embargo']=Embargo, ['laydate']=LayDate, ['publicationdate']=PublicationDate, ['year']=Year});
 
if is_set(error_message) then
 
table.insert( z.message_tail, { seterror( 'bad_date', {error_message}, true ) } ); -- add this error message
 
 
end
 
end
  
-- At this point fields may be nil if they weren't specified in the template use.  We can use that fact.
+
-- special case for cite interview
-- Test if citation has no title
+
if (config.CitationClass == "interview") then
if not is_set(Title) and
+
if is_set(Program) then
-- not is_set(Periodical) and -- not a title
+
ID = ' ' .. Program;
-- not is_set(Conference) and -- not a title
+
end
not is_set(TransTitle) and
+
if is_set(Callsign) then
not is_set(ScriptTitle) then
+
if is_set(ID) then
table.insert( z.message_tail, { seterror( 'citation_missing_title', {}, true ) } );
+
ID = ID .. sepc .. ' ' .. Callsign;
end
+
else
+
ID = ' ' .. Callsign;
if 'none' == Title and is_set(Periodical) and not (( config.CitationClass == "encyclopaedia" ) or ( config.CitationClass == "citation" and is_set (Encyclopedia))) then -- special case
+
end
Title = ''; -- set title to empty string
+
end
table.insert( z.maintenance_cats, "CS1 maint: Untitled periodical"); -- add to maint category
+
if is_set(City) then
end
+
if is_set(ID) then
 
+
ID = ID .. sepc .. ' ' .. City;
-- COinS metadata (see <http://ocoins.info/>) for automated parsing of citation information.
+
else
-- handle the oddity that is cite encyclopedia and {{citation |encyclopedia=something}}. Here we presume that
+
ID = ' ' .. City;
-- when Periodical, Title, and Chapter are all set, then Periodical is the book (encyclopedia) title, Title
+
end
-- is the article title, and Chapter is a section within the article. So, we remap
+
end
+
 
local coins_chapter = Chapter; -- default assuming that remapping not required
+
if is_set(Others) then
local coins_title = Title; -- et tu
+
if is_set(TitleType) then
if 'encyclopaedia' == config.CitationClass or ('citation' == config.CitationClass and is_set (Encyclopedia)) then
+
Others = ' ' .. TitleType .. ' with ' .. Others;
if is_set (Chapter) and is_set (Title) and is_set (Periodical) then -- if all are used then
+
TitleType = '';
coins_chapter = Title; -- remap
+
else
coins_title = Periodical;
+
Others = ' ' .. 'Interview with ' .. Others;
 +
end
 +
else
 +
Others = '(Interview)';
 
end
 
end
 
end
 
end
+
 
-- this is the function call to COinS()
+
-- special case for cite mailing list
local OCinSoutput = COinS{
+
if (config.CitationClass == "mailinglist") then
['Periodical'] = Periodical,
+
Periodical = A ['MailingList'];
['Chapter'] = strip_apostrophe_markup (coins_chapter), -- Chapter stripped of bold / italic wikimarkup
 
['Title'] = make_coins_title (coins_title, ScriptTitle), -- Title and ScriptTitle stripped of bold / italic wikimarkup
 
['PublicationPlace'] = PublicationPlace,
 
['Date'] = first_set(COinS_date, Date), -- COinS_date has correctly formatted date if Date is valid; any reason to keep Date here?  Should we be including invalid dates in metadata?
 
['Series'] = Series,
 
['Volume'] = Volume,
 
['Issue'] = Issue,
 
['Pages'] = get_coins_pages (first_set(Page, Pages, At)), -- pages stripped of external links
 
['Edition'] = Edition,
 
['PublisherName'] = PublisherName,
 
['URL'] = first_set( URL, ChapterURL ),
 
['Authors'] = a,
 
['ID_list'] = ID_list,
 
['RawPage'] = this_page.prefixedText,
 
};
 
--[[Why is this here?  Why are we mapping Title to Chapter when Periodical is set?
 
if is_set(Periodical) and not is_set(Chapter) and is_set(Title) then
 
Chapter = Title;
 
ChapterLink = TitleLink;
 
TransChapter = TransTitle;
 
Title = '';
 
TitleLink = '';
 
TransTitle = '';
 
 
end
 
end
]]
 
  
-- special case for cite newsgroup.  Do this after COinS because we are modifying Publishername to include some static text
+
--Account for the oddity that is {{cite journal}} with |pmc= set and |url= not set
if 'newsgroup' == config.CitationClass then
+
if config.CitationClass == "journal" and not is_set(URL) and is_set(ID_list['PMC']) then
if is_set (PublisherName) then
+
if not is_embargoed(Embargo) then
PublisherName = '[[Newsgroup]]:&nbsp;' ..  externallink( 'news:' .. PublisherName, PublisherName );
+
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
 
end
 
end
  
 
+
-- Account for the oddity that is {{cite conference}}, before generation of COinS data.
 
+
if 'conference' == config.CitationClass then
-- Now perform various field substitutions.
+
if is_set(BookTitle) then
-- We also add leading spaces and surrounding markup and punctuation to the
+
Chapter = Title;
-- various parts of the citation, but only when they are non-nil.
+
-- ChapterLink = TitleLink; -- |chapterlink= is deprecated
if not is_set(Authors) then
+
ChapterURL = URL;
local Maximum = tonumber( A['DisplayAuthors'] );
+
ChapterURLorigin = URLorigin;
 
+
URLorigin = '';
if is_set (Maximum) then
+
ChapterFormat = Format;
if Maximum >= #a then -- if display-authors value greater than or equal to number of authors
+
TransChapter = TransTitle;
table.insert( z.maintenance_cats, "CS1 maint: display-authors"); -- add maintenance category because display-authors parameter may be removed
+
Title = BookTitle;
end
+
Format = '';
else
+
-- TitleLink = '';
Maximum = #a + 1; -- number of authors + 1
+
TransTitle = '';
 +
URL = '';
 
end
 
end
 +
else
 +
Conference = ''; -- not cite conference so make sure this is empty string
 +
end
  
local control = {  
+
-- Account for the oddity that is {{cite episode}}, before generation of COinS data.
format = NameListFormat, -- empty string or 'vanc'
+
--[[ -- {{cite episode}} is not currently supported by this module
maximum = Maximum,
+
if config.CitationClass == "episode" then
lastauthoramp = LastAuthorAmp,
+
local AirDate = A['AirDate'];
page_name = this_page.text -- get current page name so that we don't wikilink to it via authorlinkn
+
local SeriesLink = A['SeriesLink'];
};
+
local Season = A['Season'];
 +
local SeriesNumber = A['SeriesNumber'];
 +
local Network = A['Network'];
 +
local Station = A['Station'];
 +
local s, n = {}, {};
 +
local Sep = (first_set(A["SeriesSeparator"], A["Separator"]) or "") .. " ";
 +
 +
if is_set(Issue) then table.insert(s, cfg.messages["episode"] .. " " .. Issue); Issue = ''; end
 +
if is_set(Season) then table.insert(s, cfg.messages["season"] .. " " .. Season); end
 +
if is_set(SeriesNumber) then table.insert(s, cfg.messages["series"] .. " " .. SeriesNumber); end
 +
if is_set(Network) then table.insert(n, Network); end
 +
if is_set(Station) then table.insert(n, Station); end
 
 
-- If the coauthor field is also used, prevent ampersand and et al. formatting.
+
Date = Date or AirDate;
if is_set(Coauthors) then
+
Chapter = Title;
control.lastauthoramp = nil;
+
ChapterLink = TitleLink;
control.maximum = #a + 1;
+
TransChapter = TransTitle;
end
+
Title = Series;
 +
TitleLink = SeriesLink;
 +
TransTitle = '';
 
 
Authors = listpeople(control, a)  
+
Series = table.concat(s, Sep);
 +
ID = table.concat(n, Sep);
 
end
 
end
 +
-- end of {{cite episode}} stuff]]
  
if not is_set(Authors) and is_set(Coauthors) then -- coauthors aren't displayed if one of authors=, authorn=, or lastn= isn't specified
+
-- 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.
table.insert( z.message_tail, { seterror('coauthors_missing_author', {}, true) } ); -- emit error message
+
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 is_set(Date) then
 +
local Month = A['Month'];
 +
if is_set(Month) then
 +
Date = Month .. " " .. Date;
 +
end
 +
elseif 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
 
end
  
local EditorCount
+
if PublicationDate == Date then PublicationDate = ''; end -- if PublicationDate is same as Date, don't display in rendered citation
if not is_set(Editors) then
 
local Maximum = tonumber( A['DisplayEditors'] );
 
-- Preserve old-style implicit et al.
 
if not is_set(Maximum) and #e == 4 then
 
Maximum = 3;
 
table.insert( z.message_tail, { seterror('implict_etal_editor', {}, true) } );
 
elseif not is_set(Maximum) then
 
Maximum = #e + 1;
 
end
 
  
local control = {
+
--[[
format = NameListFormat, -- empty string or 'vanc'
+
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
maximum = Maximum,
+
we get the date used in the metadata.
lastauthoramp = LastAuthorAmp,
 
page_name = this_page.text -- get current page name so that we don't wikilink to it via editorlinkn
 
};
 
  
Editors, EditorCount = listpeople(control, e);
+
Date validation supporting code is in Module:Citation/CS1/Date_validation
else
+
]]
EditorCount = 1;
+
do -- create defined block to contain local variables error_message and mismatch
end
+
local error_message = '';
 +
 
 +
anchor_year, COinS_date, error_message = dates({['accessdate']=AccessDate, ['airdate']=AirDate, ['archivedate']=ArchiveDate, ['date']=Date, ['doi_brokendate']=DoiBroken,
 +
['embargo']=Embargo, ['laydate']=LayDate, ['publicationdate']=PublicationDate, ['year']=Year});
 +
 
 +
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=
 +
table.insert( z.maintenance_cats, 'CS1 maint: Date and year'); -- add to maint category
 +
end
 +
end
  
local Cartography = "";
+
if is_set(error_message) then
local Scale = "";
+
table.insert( z.message_tail, { set_error( 'bad_date', {error_message}, true ) } ); -- add this error message
if config.CitationClass == "map" then
 
if not is_set( Authors ) and is_set( PublisherName ) then
 
Authors = PublisherName;
 
PublisherName = "";
 
 
end
 
end
Cartography = A['Cartography'];
+
end -- end of do
if is_set( Cartography ) then
+
 
Cartography = sepc .. " " .. wrap_msg ('cartography', Cartography, use_lowercase);
+
-- At this point fields may be nil if they weren't specified in the template use.  We can use that fact.
end
+
-- Test if citation has no title
Scale = A['Scale'];
+
if not is_set(Title) and
if is_set( Scale ) then
+
not is_set(TransTitle) and
Scale = sepc .. " " .. Scale;
+
not is_set(ScriptTitle) then
end
+
table.insert( z.message_tail, { set_error( 'citation_missing_title', {}, true ) } );
 
end
 
end
 
 
Format = is_set(Format) and " (" .. Format .. ")" or "";
+
if 'none' == Title and is_set(Periodical) and not (( config.CitationClass == "encyclopaedia" ) or ( config.CitationClass == "citation" and is_set (Encyclopedia))) then -- special case
 +
Title = ''; -- set title to empty string
 +
table.insert( z.maintenance_cats, 'CS1 maint: Untitled periodical'); -- add to maint category
 +
end
  
if  not is_set(URL) and
+
-- COinS metadata (see <http://ocoins.info/>) for automated parsing of citation information.
not is_set(ArchiveURL) and
+
-- handle the oddity that is cite encyclopedia and {{citation |encyclopedia=something}}. Here we presume that
not is_set(ConferenceURL) and -- TODO: keep this here? conference as part of cite web or cite podcast?
+
-- when Periodical, Title, and Chapter are all set, then Periodical is the book (encyclopedia) title, Title
not is_set(TranscriptURL) then
+
-- is the article title, and Chapter is a section within the article.  So, we remap
+
-- Test if cite web or cite podcast |url= is missing or empty
+
local coins_chapter = Chapter; -- default assuming that remapping not required
if inArray(config.CitationClass, {"web","podcast", "mailinglist"}) then
+
local coins_title = Title; -- et tu
table.insert( z.message_tail, { seterror( 'cite_web_url', {}, true ) } );
+
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
 
-- 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, { seterror( 'accessdate_missing_url', {}, true ) } );
 
AccessDate = '';
 
end
 
 
-- Test if format is given without giving a URL
 
if is_set(Format) then
 
Format = Format .. seterror( 'format_missing_url', {'format', 'url'} );
 
end
 
end
 
--[[
 
-- Test if citation has no title
 
if not is_set(Title) and
 
-- not is_set(Periodical) and -- not a title
 
-- not is_set(Conference) and -- not a title
 
not is_set(TransTitle) and
 
not is_set(ScriptTitle) then
 
table.insert( z.message_tail, { seterror( 'citation_missing_title', {}, true ) } );
 
 
end
 
end
 
 
if 'none' == Title and is_set(Periodical) then -- special case
+
-- this is the function call to COinS()
Title = ''; -- set title to empty string
+
local OCinSoutput = COinS{
table.insert( z.maintenance_cats, "CS1 maint: Untitled periodical"); -- add to maint category
+
['Periodical'] = Periodical,
 +
['Chapter'] = strip_apostrophe_markup (coins_chapter), -- Chapter stripped of bold / italic wikimarkup
 +
['Title'] = make_coins_title (coins_title, ScriptTitle), -- Title and ScriptTitle stripped of bold / italic wikimarkup
 +
['PublicationPlace'] = PublicationPlace,
 +
['Date'] = first_set(COinS_date, Date), -- COinS_date has correctly formatted date if Date is valid; any reason to keep Date here?  Should we be including invalid dates in metadata?
 +
['Series'] = Series,
 +
['Volume'] = Volume,
 +
['Issue'] = Issue,
 +
['Pages'] = get_coins_pages (first_set(Page, Pages, At)), -- pages stripped of external links
 +
['Edition'] = Edition,
 +
['PublisherName'] = PublisherName,
 +
['URL'] = first_set( URL, ChapterURL ),
 +
['Authors'] = a,
 +
['ID_list'] = ID_list,
 +
['RawPage'] = this_page.prefixedText,
 +
};
 +
 
 +
-- 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 = '[[Newsgroup]]:&nbsp;' ..  external_link( 'news:' .. PublisherName, PublisherName );
 +
end
 
end
 
end
]]
+
 
local OriginalURL;
+
 
DeadURL = DeadURL:lower(); -- used later when assembling archived text
+
 
if is_set( ArchiveURL ) then
+
-- Now perform various field substitutions.
if is_set (URL) then
+
-- We also add leading spaces and surrounding markup and punctuation to the
OriginalURL = URL; -- save copy of original source URL
+
-- various parts of the citation, but only when they are non-nil.
if 'no' ~= DeadURL then -- if URL set then archive-url applies to it
+
if not is_set(Authors) then
URL = ArchiveURL -- swap-in the archive's url
+
local Maximum = tonumber( A['DisplayAuthors'] );
URLorigin = A:ORIGIN('ArchiveURL') -- name of archive url parameter for error messages
+
 
end
+
if is_set (Maximum) then
elseif is_set (ChapterURL) then -- URL not set so if chapter-url is set apply archive url to it
+
if Maximum >= #a then -- if display-authors value greater than or equal to number of authors
OriginalURL = ChapterURL; -- save copy of source chapter's url for archive text
+
table.insert( z.maintenance_cats, 'CS1 maint: display-authors'); -- add maintenance category because display-authors parameter may be removed
if 'no' ~= DeadURL then
 
ChapterURL = ArchiveURL -- swap-in the archive's url
 
URLorigin = A:ORIGIN('ArchiveURL') -- name of archive url parameter for error messages
 
 
end
 
end
 +
else
 +
Maximum = #a + 1; -- number of authors + 1
 +
end
 +
 +
local control = {
 +
format = NameListFormat, -- empty string or 'vanc'
 +
maximum = Maximum,
 +
lastauthoramp = LastAuthorAmp,
 +
page_name = this_page.text -- get current page name so that we don't wikilink to it via authorlinkn
 +
};
 +
 +
-- If the coauthor field is also used, prevent ampersand and et al. formatting.
 +
if is_set(Coauthors) then
 +
control.lastauthoramp = nil;
 +
control.maximum = #a + 1;
 
end
 
end
 +
 +
Authors = list_people(control, a, author_etal)
 
end
 
end
  
if inArray(config.CitationClass, {"web","news","journal","pressrelease","podcast", "newsgroup"}) or
+
if not is_set(Authors) and is_set(Coauthors) then -- coauthors aren't displayed if one of authors=, authorn=, or lastn= isn't specified
('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) then
+
table.insert( z.message_tail, { set_error('coauthors_missing_author', {}, true) } ); -- emit error message
if is_set (Chapter) or is_set (TransChapter) or is_set (ChapterURL)then -- chapter parameters not supported for these citation types
 
table.insert( z.message_tail, { seterror( 'chapter_ignored', {}, true ) } ); -- add error message
 
Chapter = ''; -- set to empty string to be safe with concatenation
 
TransChapter = '';
 
ChapterURL = '';
 
end
 
else -- otherwise, format chapter / article title
 
Chapter = format_chapter_title (Chapter, TransChapter, ChapterURL, ChapterURLorigin);
 
if is_set (Chapter) then
 
ChapterFormat = is_set(ChapterFormat) and " (" .. ChapterFormat .. ")" or "";
 
if is_set(ChapterFormat) and not is_set (ChapterURL) then -- Test if |chapter-format= is given without giving a |chapter-url=
 
ChapterFormat = ChapterFormat .. seterror( 'format_missing_url', {'chapter-format', 'chapter-url'} );
 
end
 
Chapter = Chapter .. ChapterFormat .. sepc .. ' ';
 
end
 
 
end
 
end
  
-- Format main title.
+
local EditorCount
if is_set(TitleLink) and is_set(Title) then
+
if not is_set(Editors) then
Title = "[[" .. TitleLink .. "|" .. Title .. "]]"
+
local Maximum = tonumber( A['DisplayEditors'] );
end
+
-- 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) } );
 +
elseif not is_set(Maximum) then
 +
Maximum = #e + 1;
 +
end
  
if inArray(config.CitationClass, {"web","news","journal","pressrelease","podcast", "newsgroup", "mailinglist"}) or
+
local control = {
('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) then
+
format = NameListFormat, -- empty string or 'vanc'
Title = kern_quotes (Title); -- if necessary, separate title's leading and trailing quote marks from Module provided quote marks
+
maximum = Maximum,
Title = wrap_style ('quoted-title', Title);
+
lastauthoramp = LastAuthorAmp,
+
page_name = this_page.text -- get current page name so that we don't wikilink to it via editorlinkn
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
+
Editors, EditorCount = list_people(control, e, editor_etal);
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
 
else
Title = wrap_style ('italic-title', Title);
+
EditorCount = 1;
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
 
end
  
TransError = "";
+
-- cite map oddities
if is_set(TransTitle) then
+
local Cartography = "";
if is_set(Title) then
+
local Scale = "";
TransTitle = " " .. TransTitle;
+
if config.CitationClass == "map" then
else
+
Chapter = A['Map'];
TransError = " " .. seterror( 'trans_missing_title' );
+
ChapterURL = A['MapURL'];
end
+
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
 
end
 
 
Title = Title .. TransTitle;
+
Format = is_set(Format) and " (" .. Format .. ")" or "";
+
 
if is_set(Title) then
+
if not is_set(URL) and
if not is_set(TitleLink) and is_set(URL) then  
+
not is_set(ArchiveURL) and
Title = externallink( URL, Title ) .. TransError .. Format  
+
not is_set(ConferenceURL) and -- TODO: keep this here? conference as part of cite web or cite podcast?
URL = "";
+
not is_set(TranscriptURL) then
Format = "";
+
else
+
-- Test if cite web or cite podcast |url= is missing or empty
Title = Title .. TransError;
+
if in_array(config.CitationClass, {"web","podcast", "mailinglist"}) then
 +
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
 +
 +
-- Test if format is given without giving a URL
 +
if is_set(Format) then
 +
Format = Format .. set_error( 'format_missing_url', {'format', 'url'} );
 
end
 
end
 
end
 
end
  
if is_set(Place) then
+
local OriginalURL;
Place = " " .. wrap_msg ('written', Place, use_lowercase) .. sepc .. " ";
+
DeadURL = DeadURL:lower(); -- used later when assembling archived text
end
+
if is_set( ArchiveURL ) then
+
if is_set (URL) then
if is_set(Conference) then
+
OriginalURL = URL; -- save copy of original source URL
if is_set(ConferenceURL) then
+
if 'no' ~= DeadURL then -- if URL set then archive-url applies to it
Conference = externallink( ConferenceURL, Conference );
+
URL = ArchiveURL -- swap-in the archive's url
end
+
URLorigin = A:ORIGIN('ArchiveURL') -- name of archive url parameter for error messages
Conference = sepc .. " " .. Conference
+
end
elseif is_set(ConferenceURL) then
+
elseif is_set (ChapterURL) then -- URL not set so if chapter-url is set apply archive url to it
Conference = sepc .. " " .. externallink( ConferenceURL, nil, ConferenceURLorigin );
+
OriginalURL = ChapterURL; -- save copy of source chapter's url for archive text
end
+
if 'no' ~= DeadURL then
+
ChapterURL = ArchiveURL -- swap-in the archive's url
if not is_set(Position) then
+
URLorigin = A:ORIGIN('ArchiveURL') -- name of archive url parameter for error messages
local Minutes = A['Minutes'];
 
if is_set(Minutes) then
 
Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
 
else
 
local Time = A['Time'];
 
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
 
end
 
end
else
 
Position = " " .. Position;
 
At = '';
 
 
end
 
end
+
 
if not is_set(Page) then
+
if in_array(config.CitationClass, {"web","news","journal","pressrelease","podcast", "newsgroup"}) or
if is_set(Pages) then
+
('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) then
if is_set(Periodical) and
+
if is_set (Chapter) or is_set (TransChapter) or is_set (ChapterURL)then -- chapter parameters not supported for these citation types
not inArray(config.CitationClass, {"encyclopaedia","web","book","news","podcast"}) then
+
table.insert( z.message_tail, { set_error( 'chapter_ignored', {}, true ) } ); -- add error message
Pages = ": " .. Pages;
+
Chapter = ''; -- set to empty string to be safe with concatenation
elseif tonumber(Pages) ~= nil then
+
TransChapter = '';
Pages = sepc .." " .. PPrefix .. Pages;
+
ChapterURL = '';
else
+
end
Pages = sepc .." " .. PPPrefix .. Pages;
+
else -- otherwise, format chapter / article title
 +
Chapter = format_chapter_title (Chapter, TransChapter, ChapterURL, ChapterURLorigin);
 +
if is_set (Chapter) then
 +
ChapterFormat = is_set(ChapterFormat) and " (" .. ChapterFormat .. ")" or "";
 +
if is_set(ChapterFormat) and not is_set (ChapterURL) then -- Test if |chapter-format= is given without giving a |chapter-url=
 +
ChapterFormat = ChapterFormat .. set_error( 'format_missing_url', {'chapter-format', 'chapter-url'} );
 +
end
 +
if 'map' == config.CitationClass and is_set (TitleType) then
 +
Chapter = Chapter .. ' (' .. TitleType .. ')';
 
end
 
end
 +
Chapter = Chapter .. ChapterFormat .. sepc .. ' ';
 
end
 
end
else
 
if is_set(Periodical) and
 
not inArray(config.CitationClass, {"encyclopaedia","web","book","news","podcast"}) then
 
Page = ": " .. Page;
 
else
 
Page = sepc .." " .. PPrefix .. Page;
 
end
 
 
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","pressrelease","podcast", "newsgroup", "mailinglist"}) 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);
 
 
At = is_set(At) and (sepc .. " " .. At) or "";
+
Title = script_concatenate (Title, ScriptTitle); -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
Position = is_set(Position) and (sepc .. " " .. Position) or "";
+
TransTitle= wrap_style ('trans-quoted-title', TransTitle );
if config.CitationClass == 'map' then
+
elseif 'report' == config.CitationClass then -- no styling for cite report
local Section = A['Section'];
+
Title = script_concatenate (Title, ScriptTitle); -- <bdi> tags, lang atribute, categorization, etc; must be done after title is wrapped
local Inset = A['Inset'];
+
TransTitle= wrap_style ('trans-quoted-title', TransTitle ); -- for cite report, use this form for trans-title
if first_set( Pages, Page, At ) ~= nil or sepc ~= '.' then
 
if is_set( Section ) then
 
Section = ", " .. wrap_msg ('section', Section, true);
 
end
 
if is_set( Inset ) then
 
Inset = ", " .. wrap_msg ('inset', Inset, true);
 
end
 
else
 
if is_set( Section ) then
 
Section = sepc .. " " .. wrap_msg ('section', Section, use_lowercase);
 
if is_set( Inset ) then
 
Inset = ", " .. wrap_msg ('inset', Inset, true);
 
end
 
elseif is_set( Inset ) then
 
Inset = sepc .. " " .. wrap_msg ('inset', Inset, use_lowercase);
 
end
 
end
 
At = At .. Section .. Inset;
 
end
 
 
 
if is_set (Language) then
 
Language = language_parameter (Language, this_page.namespace); -- format, categories (article namespace only), name from ISO639-1, etc
 
 
else
 
else
Language=""; -- language not specified so make sure this is an empty string;
+
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
 
end
  
Others = is_set(Others) and (sepc .. " " .. Others) or "";
+
TransError = "";
 
+
if is_set(TransTitle) then
-- handle type parameter for those CS1 citations that have default values
+
if is_set(Title) then
 
+
TransTitle = " " .. TransTitle;
if inArray(config.CitationClass, {"AV-media-notes", "DVD-notes", "mailinglist", "podcast", "pressrelease", "report", "techreport", "thesis"}) then
+
else
TitleType = set_titletype (config.CitationClass, TitleType);
+
TransError = " " .. set_error( 'trans_missing_title' );
if is_set(Degree) and "Thesis" == TitleType then -- special case for cite thesis
 
TitleType = Degree .. " thesis";
 
 
end
 
end
 
end
 
end
 
+
if is_set(TitleType) then -- if type parameter is specified
+
Title = Title .. TransTitle;
TitleType = " (" .. TitleType .. ")"; -- display it in parentheses
+
end
+
if is_set(Title) then
 
+
if not is_set(TitleLink) and is_set(URL) then
TitleNote = is_set(TitleNote) and (sepc .. " " .. TitleNote) or "";
+
Title = external_link( URL, Title ) .. TransError .. Format  
Edition = is_set(Edition) and (" " .. wrap_msg ('edition', Edition)) or "";
+
URL = "";
Issue = is_set(Issue) and (" (" .. Issue .. ")") or "";
+
Format = "";
Series = is_set(Series) and (sepc .. " " .. Series) or "";
+
else
OrigYear = is_set(OrigYear) and (" [" .. OrigYear .. "]") or "";
+
Title = Title .. TransError;
Agency = is_set(Agency) and (sepc .. " " .. Agency) or "";
 
 
 
if is_set(Volume) then
 
if ( mw.ustring.len(Volume) > 4 )
 
  then Volume = sepc .." " .. Volume;
 
  else Volume = " <b>" .. hyphentodash(Volume) .. "</b>";
 
 
end
 
end
 
end
 
end
  
------------------------------------ totally unrelated data
+
if is_set(Place) then
if is_set(Via) then
+
Place = " " .. wrap_msg ('written', Place, use_lowercase) .. sepc .. " ";
Via = " " .. wrap_msg ('via', Via);
 
 
end
 
end
 
+
--[[
+
if is_set(Conference) then
Subscription implies paywall; Registration does not.  If both are used in a citation, the subscription required link
+
if is_set(ConferenceURL) then
note is displayed. There are no error messages for this condition.
+
Conference = external_link( ConferenceURL, Conference );
 
+
end
]]
+
Conference = sepc .. " " .. Conference
if inArray(SubscriptionRequired:lower(), {'yes', 'true', 'y'}) then
+
elseif is_set(ConferenceURL) then
SubscriptionRequired = sepc .. " " .. cfg.messages['subscription']; -- subscription required message
+
Conference = sepc .. " " .. external_link( ConferenceURL, nil, ConferenceURLorigin );
elseif inArray(RegistrationRequired:lower(), {'yes', 'true', 'y'}) 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
 
end
 
 
if is_set(ID) then ID = sepc .." ".. ID; end
+
if not is_set(Position) then
  if "thesis" == config.CitationClass and is_set(Docket) then
+
local Minutes = A['Minutes'];
ID = sepc .." Docket ".. Docket .. ID;
+
if is_set(Minutes) then
end
+
Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
  if "report" == config.CitationClass and is_set(Docket) then -- for cite report when |docket= is set
+
else
ID = sepc .. ' ' .. Docket; -- overwrite ID even if |id= is set
+
local Time = A['Time'];
end
+
if is_set(Time) then
 
+
local TimeCaption = A['TimeCaption']
ID_list = buildidlist( ID_list, {DoiBroken = DoiBroken, ASINTLD = ASINTLD, IgnoreISBN = IgnoreISBN, Embargo=Embargo} );
+
if not is_set(TimeCaption) then
 
+
TimeCaption = cfg.messages['event'];
if is_set(URL) then
+
if sepc ~= '.' then
URL = " " .. externallink( URL, nil, URLorigin );
+
TimeCaption = TimeCaption:lower();
end
+
end
 
+
end
if is_set(Quote) then
+
Position = " " .. TimeCaption .. " " .. Time;
if Quote:sub(1,1) == '"' and Quote:sub(-1,-1) == '"' then
+
end
Quote = Quote:sub(2,-2);
 
 
end
 
end
Quote = sepc .." " .. wrap_style ('quoted-text', Quote ); -- wrap in <q>...</q> tags
+
else
PostScript = ""; -- CS1 does not supply terminal punctuation when |quote= is set
+
Position = " " .. Position;
 +
At = '';
 
end
 
end
 
 
local Archived
+
if not is_set(Page) then
if is_set(ArchiveURL) then
+
if is_set(Pages) then
if not is_set(ArchiveDate) then
+
if is_set(Periodical) and
ArchiveDate = seterror('archive_missing_date');
+
not in_array(config.CitationClass, {"encyclopaedia","web","book","news","podcast"}) then
 +
Pages = ": " .. Pages;
 +
elseif tonumber(Pages) ~= nil then
 +
Pages = sepc .." " .. PPrefix .. Pages;
 +
else
 +
Pages = sepc .." " .. PPPrefix .. Pages;
 +
end
 
end
 
end
if "no" == DeadURL then
+
else
local arch_text = cfg.messages['archived'];
+
if is_set(Periodical) and
if sepc ~= "." then arch_text = arch_text:lower() end
+
not in_array(config.CitationClass, {"encyclopaedia","web","book","news","podcast"}) then
Archived = sepc .. " " .. substitute( cfg.messages['archived-not-dead'],
+
Page = ": " .. Page;
{ externallink( ArchiveURL, arch_text ), ArchiveDate } );
 
if not is_set(OriginalURL) then
 
Archived = Archived .. " " .. seterror('archive_missing_url');  
 
end
 
elseif is_set(OriginalURL) then
 
local arch_text = cfg.messages['archived-dead'];
 
if sepc ~= "." then arch_text = arch_text:lower() end
 
Archived = sepc .. " " .. substitute( arch_text,
 
{ externallink( OriginalURL, cfg.messages['original'] ), ArchiveDate } );
 
 
else
 
else
local arch_text = cfg.messages['archived-missing'];
+
Page = sepc .." " .. PPrefix .. Page;
if sepc ~= "." then arch_text = arch_text:lower() end
 
Archived = sepc .. " " .. substitute( arch_text,
 
{ seterror('archive_missing_url'), ArchiveDate } );
 
 
end
 
end
else
 
Archived = ""
 
 
end
 
end
 
 
local Lay
+
At = is_set(At) and (sepc .. " " .. At) or "";
if is_set(LayURL) then
+
Position = is_set(Position) and (sepc .. " " .. Position) or "";
if is_set(LayDate) then LayDate = " (" .. LayDate .. ")" end
+
if config.CitationClass == 'map' then
if is_set(LaySource) then  
+
local Section = A['Section'];
LaySource = " &ndash; ''" .. safeforitalics(LaySource) .. "''";
+
local Sections = A['Sections'];
else
+
local Inset = A['Inset'];
LaySource = "";
+
 +
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
 
end
if sepc == '.' then
+
At = At .. Inset .. Section;
Lay = sepc .. " " .. externallink( LayURL, cfg.messages['lay summary'] ) .. LaySource .. LayDate
+
end
else
+
 
Lay = sepc .. " " .. externallink( LayURL, cfg.messages['lay summary']:lower() ) .. LaySource .. LayDate
+
if is_set (Language) then
end
+
Language = language_parameter (Language, this_page.namespace); -- format, categories (article namespace only), name from ISO639-1, etc
 
else
 
else
Lay = "";
+
Language=""; -- language not specified so make sure this is an empty string;
 
end
 
end
+
 
if is_set(Transcript) then
+
Others = is_set(Others) and (sepc .. " " .. Others) or "";
if is_set(TranscriptURL) then Transcript = externallink( TranscriptURL, Transcript ); end
+
 
elseif is_set(TranscriptURL) then
+
-- handle type parameter for those CS1 citations that have default values
Transcript = externallink( TranscriptURL, nil, TranscriptURLorigin );
+
 
 +
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
 
end
+
 
local Publisher;
+
if is_set(TitleType) then -- if type parameter is specified
if is_set(Periodical) and
+
TitleType = " (" .. TitleType .. ")"; -- display it in parentheses
not inArray(config.CitationClass, {"encyclopaedia","web","pressrelease","podcast"}) then
+
end
if is_set(PublisherName) then
+
 
if is_set(PublicationPlace) then
+
TitleNote = is_set(TitleNote) and (sepc .. " " .. TitleNote) or "";
Publisher = PublicationPlace .. ": " .. PublisherName;
+
Edition = is_set(Edition) and (" " .. wrap_msg ('edition', Edition)) or "";
else
+
Issue = is_set(Issue) and (" (" .. Issue .. ")") or "";
Publisher = PublisherName; 
+
Series = is_set(Series) and (sepc .. " " .. Series) or "";
end
+
OrigYear = is_set(OrigYear) and (" [" .. OrigYear .. "]") or "";
elseif is_set(PublicationPlace) then
+
Agency = is_set(Agency) and (sepc .. " " .. Agency) or "";
Publisher= PublicationPlace;
+
 
else
+
if is_set(Volume) then
Publisher = "";
+
if ( mw.ustring.len(Volume) > 4 )
end
+
  then Volume = sepc .." " .. Volume;
if is_set(PublicationDate) then
+
  else Volume = " <b>" .. hyphen_to_dash(Volume) .. "</b>";
if is_set(Publisher) then
 
Publisher = Publisher .. ", " .. wrap_msg ('published', PublicationDate);
 
else
 
Publisher = PublicationDate;
 
end
 
end
 
if is_set(Publisher) then
 
Publisher = " (" .. Publisher .. ")";
 
 
end
 
end
 +
end
 +
 +
------------------------------------ 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 in_array(SubscriptionRequired:lower(), {'yes', 'true', 'y'}) then
 +
SubscriptionRequired = sepc .. " " .. cfg.messages['subscription']; -- subscription required message
 +
elseif in_array(RegistrationRequired:lower(), {'yes', 'true', 'y'}) then
 +
SubscriptionRequired = sepc .. " " .. cfg.messages['registration']; -- registration required message
 
else
 
else
if is_set(PublicationDate) then
+
SubscriptionRequired = ''; -- either or both might be set to something other than yes true y
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
 
end
+
 
-- Several of the above rely upon detecting this as nil, so do it last.
+
if is_set(AccessDate) then
if is_set(Periodical) then
+
local retrv_text = " " .. cfg.messages['retrieved']
if is_set(Title) or is_set(TitleNote) then  
+
 
Periodical = sepc .. " " .. wrap_style ('italic-title', Periodical)
+
AccessDate = nowrap_date (AccessDate); -- wrap in nowrap span if date in appropriate format
else
+
if (sepc ~= ".") then retrv_text = retrv_text:lower() end -- if 'citation', lower case
Periodical = wrap_style ('italic-title', Periodical)
+
AccessDate = substitute (retrv_text, AccessDate); -- add retrieved text
end
+
-- 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
 
end
  
--[[
+
ID_list = build_id_list( ID_list, {DoiBroken = DoiBroken, ASINTLD = ASINTLD, IgnoreISBN = IgnoreISBN, Embargo=Embargo} );
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 is_set(URL) then
]]
+
URL = " " .. external_link( URL, nil, URLorigin );
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
 
end
  
-- Piece all bits together at last.  Here, all should be non-nil.
+
if is_set(Quote) then
-- We build things this way because it is more efficient in LUA
+
if Quote:sub(1,1) == '"' and Quote:sub(-1,-1) == '"' then
-- not to keep reassigning to the same string variable over and over.
+
Quote = Quote:sub(2,-2);
 
+
end
local tcommon
+
Quote = sepc .." " .. wrap_style ('quoted-text', Quote ); -- wrap in <q>...</q> tags
if inArray(config.CitationClass, {"journal","citation"}) and is_set(Periodical) then
+
PostScript = ""; -- CS1 does not supply terminal punctuation when |quote= is set
if is_set(Others) then Others = Others .. sepc .. " " end
 
tcommon = safejoin( {Others, Title, TitleNote, Conference, Periodical, Format, TitleType, Scale, Series,
 
Language, Cartography, Edition, Publisher, Agency, Volume, Issue}, sepc );
 
else
 
tcommon = safejoin( {Title, TitleNote, Conference, Periodical, Format, TitleType, Scale, Series, Language,  
 
Volume, Issue, Others, Cartography, Edition, Publisher, Agency}, sepc );
 
 
end
 
end
 
 
if #ID_list > 0 then
+
local Archived
ID_list = safejoin( { sepc .. " ",  table.concat( ID_list, sepc .. " " ), ID }, sepc );
+
if is_set(ArchiveURL) then
else
+
if not is_set(ArchiveDate) then
ID_list = ID;
+
ArchiveDate = set_error('archive_missing_date');
end
 
 
local idcommon = safejoin( { ID_list, URL, Archived, AccessDate, Via, SubscriptionRequired, Lay, Quote }, sepc );
 
local text;
 
local pgtext = Position .. Page .. Pages .. At;
 
 
if is_set(Authors) then
 
if is_set(Coauthors) then
 
local sep = '; ';
 
if 'vanc' == NameListFormat then
 
sep = ', ';
 
end
 
Authors = Authors .. sep .. Coauthors;
 
 
end
 
end
if is_set(Date) then
+
if "no" == DeadURL then
Date = " ("..Date..")" .. OrigYear .. sepc .. " "
+
local arch_text = cfg.messages['archived'];
elseif string.sub(Authors,-1,-1) == sepc then
+
if sepc ~= "." then arch_text = arch_text:lower() end
Authors = Authors .. " "
+
Archived = sepc .. " " .. substitute( cfg.messages['archived-not-dead'],
 +
{ external_link( ArchiveURL, arch_text ), ArchiveDate } );
 +
if not is_set(OriginalURL) then
 +
Archived = Archived .. " " .. set_error('archive_missing_url');  
 +
end
 +
elseif is_set(OriginalURL) then
 +
local arch_text = cfg.messages['archived-dead'];
 +
if sepc ~= "." then arch_text = arch_text:lower() end
 +
Archived = sepc .. " " .. substitute( arch_text,
 +
{ external_link( OriginalURL, cfg.messages['original'] ), ArchiveDate } );
 
else
 
else
Authors = Authors .. sepc .. " "
+
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
if is_set(Editors) then
+
else
local in_text = " ";
+
Archived = ""
local post_text = "";
+
end
if is_set(Chapter) then
+
in_text = in_text .. cfg.messages['in'] .. " "
+
local Lay
else
+
if is_set(LayURL) then
if EditorCount <= 1 then
+
if is_set(LayDate) then LayDate = " (" .. LayDate .. ")" end
post_text = ", " .. cfg.messages['editor'];
+
if is_set(LaySource) then  
else
+
LaySource = " &ndash; ''" .. safe_for_italics(LaySource) .. "''";
post_text = ", " .. cfg.messages['editors'];
+
else
end
+
LaySource = "";
end
 
if (sepc ~= '.') then in_text = in_text:lower() end
 
Editors = in_text .. Editors .. post_text;
 
if (string.sub(Editors,-1,-1) == sepc)
 
then Editors = Editors .. " "
 
else Editors = Editors .. sepc .. " "
 
end
 
 
end
 
end
text = safejoin( {Authors, Date, Chapter, Place, Editors, tcommon }, sepc );
+
if sepc == '.' then
text = safejoin( {text, pgtext, idcommon}, sepc );
+
Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary'] ) .. LaySource .. LayDate
elseif is_set(Editors) then
+
else
if is_set(Date) then
+
Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary']:lower() ) .. LaySource .. LayDate
if EditorCount <= 1 then
+
end
Editors = Editors .. ", " .. cfg.messages['editor'];
+
else
 +
Lay = "";
 +
end
 +
 +
if is_set(Transcript) then
 +
if is_set(TranscriptURL) then Transcript = external_link( TranscriptURL, Transcript ); end
 +
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
 +
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, Issue}, sepc );
 +
 +
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, Issue}, sepc );
 +
else -- a sheet or stand-alone map
 +
tcommon = safe_join( {Title, TitleType, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher}, sepc );
 +
end
 +
 +
else -- all other CS1 templates
 +
tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language,
 +
Volume, Issue, 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 .. Page .. Pages .. At;
 +
 +
if is_set(Authors) then
 +
if is_set(Coauthors) then
 +
local sep = '; ';
 +
if 'vanc' == NameListFormat then
 +
sep = ', ';
 +
end
 +
Authors = Authors .. sep .. Coauthors;
 +
end
 +
if is_set(Date) then
 +
Date = " ("..Date..")" .. OrigYear .. sepc .. " "
 +
elseif string.sub(Authors,-1,-1) == sepc then
 +
Authors = Authors .. " "
 +
else
 +
Authors = Authors .. sepc .. " "
 +
end
 +
if is_set(Editors) then
 +
local in_text = " ";
 +
local post_text = "";
 +
if is_set(Chapter) then
 +
in_text = in_text .. cfg.messages['in'] .. " "
 +
else
 +
if EditorCount <= 1 then
 +
post_text = ", " .. cfg.messages['editor'];
 +
else
 +
post_text = ", " .. cfg.messages['editors'];
 +
end
 +
end
 +
if (sepc ~= '.') then in_text = in_text:lower() end
 +
Editors = in_text .. Editors .. post_text;
 +
if (string.sub(Editors,-1,-1) == sepc)
 +
then Editors = Editors .. " "
 +
else Editors = Editors .. sepc .. " "
 +
end
 +
end
 +
text = safe_join( {Authors, Date, Chapter, Place, Editors, tcommon }, sepc );
 +
text = safe_join( {text, pgtext, idcommon}, sepc );
 +
elseif is_set(Editors) then
 +
if is_set(Date) then
 +
if EditorCount <= 1 then
 +
Editors = Editors .. ", " .. cfg.messages['editor'];
 
else
 
else
 
Editors = Editors .. ", " .. cfg.messages['editors'];
 
Editors = Editors .. ", " .. cfg.messages['editors'];
end
+
end
Date = " (" .. Date ..")" .. OrigYear .. sepc .. " "
+
Date = " (" .. Date ..")" .. OrigYear .. sepc .. " "
else
+
else
if EditorCount <= 1 then
+
if EditorCount <= 1 then
Editors = Editors .. " (" .. cfg.messages['editor'] .. ")" .. sepc .. " "
+
Editors = Editors .. " (" .. cfg.messages['editor'] .. ")" .. sepc .. " "
else
+
else
Editors = Editors .. " (" .. cfg.messages['editors'] .. ")" .. sepc .. " "
+
Editors = Editors .. " (" .. cfg.messages['editors'] .. ")" .. sepc .. " "
end
+
end
end
+
end
text = safejoin( {Editors, Date, Chapter, Place, tcommon}, sepc );
+
text = safe_join( {Editors, Date, Chapter, Place, tcommon}, sepc );
text = safejoin( {text, pgtext, idcommon}, sepc );
+
text = safe_join( {text, pgtext, idcommon}, sepc );
else
+
else
if is_set(Date) then
+
if is_set(Date) then
if ( string.sub(tcommon,-1,-1) ~= sepc )
+
if ( string.sub(tcommon,-1,-1) ~= sepc )
  then Date = sepc .." " .. Date .. OrigYear
+
  then Date = sepc .." " .. Date .. OrigYear
  else Date = " " .. Date .. OrigYear
+
  else Date = " " .. Date .. OrigYear
end
+
end
end
+
end
if config.CitationClass=="journal" and is_set(Periodical) then
+
if config.CitationClass=="journal" and is_set(Periodical) then
text = safejoin( {Chapter, Place, tcommon}, sepc );
+
text = safe_join( {Chapter, Place, tcommon}, sepc );
text = safejoin( {text, pgtext, Date, idcommon}, sepc );
+
text = safe_join( {text, pgtext, Date, idcommon}, sepc );
else
+
else
text = safejoin( {Chapter, Place, tcommon, Date}, sepc );
+
text = safe_join( {Chapter, Place, tcommon, Date}, sepc );
text = safejoin( {text, pgtext, idcommon}, sepc );
+
text = safe_join( {text, pgtext, idcommon}, sepc );
end
+
end
end
+
end
+
if is_set(PostScript) and PostScript ~= sepc then
+
if is_set(PostScript) and PostScript ~= sepc then
text = safejoin( {text, sepc}, sepc );  --Deals with italics, spaces, etc.
+
text = safe_join( {text, sepc}, sepc );  --Deals with italics, spaces, etc.
text = text:sub(1,-sepc:len()-1);
+
text = text:sub(1,-sepc:len()-1);
-- text = text:sub(1,-2); --Remove final separator (assumes that sepc is only one character)
+
end
end
+
 +
text = safe_join( {text, PostScript}, sepc );
 +
 
 +
-- Now enclose the whole thing in a <span/> element
 +
local options = {};
 +
 +
if is_set(config.CitationClass) and config.CitationClass ~= "citation" then
 +
options.class = "citation " .. config.CitationClass;
 +
else
 +
options.class = "citation";
 +
end
 +
 +
if is_set(Ref) and Ref:lower() ~= "none" then
 +
local id = Ref
 +
if ( "harv" == Ref ) then
 +
local names = {} --table of last names & year
 +
if #a > 0 then
 +
for i,v in ipairs(a) do
 +
names[i] = v.last
 +
if i == 4 then break end
 +
end
 +
elseif #e > 0 then
 +
for i,v in ipairs(e) do
 +
names[i] = v.last
 +
if i == 4 then break end
 +
end
 +
end
 +
names[ #names + 1 ] = first_set(Year, anchor_year); -- Year first for legacy citations and for YMD dates that require disambiguation
 +
id = anchor_id(names)
 +
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 = '<span id="' .. mw.uri.anchorEncode(options.id) ..'" class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</span>";
 +
else
 +
text = '<span class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</span>";
 +
end
 +
 
 +
local empty_span = '<span style="display:none;">&nbsp;</span>';
 +
 +
-- Note: Using display: none on then 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
 +
 
 +
-- 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;
 
 
text = safejoin( {text, PostScript}, sepc );
+
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
  
-- Now enclose the whole thing in a <span/> element
+
else -- otherwise
local options = {};
+
cfg = mw.loadData ('Module:Citation/CS1/Configuration'); -- load live versions of Configuration and Whitelist and ...
+
whitelist = mw.loadData ('Module:Citation/CS1/Whitelist');
if is_set(config.CitationClass) and config.CitationClass ~= "citation" then
+
validation = require ('Module:Citation/CS1/Date_validation'); -- ... live version of date validation code
options.class = "citation " .. config.CitationClass;
 
else
 
options.class = "citation";
 
end
 
 
if is_set(Ref) and Ref:lower() ~= "none" then
 
local id = Ref
 
if ( "harv" == Ref ) then
 
local names = {} --table of last names & year
 
if #a > 0 then
 
for i,v in ipairs(a) do
 
names[i] = v.last
 
if i == 4 then break end
 
end
 
elseif #e > 0 then
 
for i,v in ipairs(e) do
 
names[i] = v.last
 
if i == 4 then break end
 
end
 
end
 
names[ #names + 1 ] = first_set(Year, anchor_year); -- Year first for legacy citations and for YMD dates that require disambiguation
 
id = anchorid(names)
 
end
 
options.id = id;
 
end
 
 
if string.len(text:gsub("<span[^>/]*>.-</span>", ""):gsub("%b<>","")) <= 2 then
 
z.error_categories = {};
 
text = seterror('empty_citation');
 
z.message_tail = {};
 
 
end
 
end
 
if is_set(options.id) then
 
text = '<span id="' .. mw.uri.anchorEncode(options.id) ..'" class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</span>";
 
else
 
text = '<span class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</span>";
 
end
 
  
local empty_span = '<span style="display:none;">&nbsp;</span>';
+
dates = validation.dates; -- imported functions
+
year_date_check = validation.year_date_check;
-- Note: Using display: none on then 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 .. errorcomment( v[1], v[2] );
 
else
 
text = text .. errorcomment( v[1] .. "; ", v[2] );
 
end
 
end
 
end
 
end
 
 
no_tracking_cats = no_tracking_cats:lower();
 
if inArray(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
 
  
-- This is used by templates such as {{cite book}} to create the actual citation text.
 
function z.citation(frame)
 
local pframe = frame:getParent()
 
 
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' );
 
dates = require('Module:Citation/CS1/Date_validation/sandbox').dates -- ... 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' );
 
dates = require('Module:Citation/CS1/Date_validation').dates -- ... live version of date validation code
 
end
 
 
 
local args = {};
 
local args = {};
 
local suggestions = {};
 
local suggestions = {};
Line 2,685: Line 2,828:
 
-- Exclude empty numbered parameters
 
-- Exclude empty numbered parameters
 
if v:match("%S+") ~= nil then
 
if v:match("%S+") ~= nil then
error_text, error_state = seterror( 'text_ignored', {v}, true );
+
error_text, error_state = set_error( 'text_ignored', {v}, true );
 
end
 
end
 
elseif validate( k:lower() ) then  
 
elseif validate( k:lower() ) then  
error_text, error_state = seterror( 'parameter_ignored_suggest', {k, k:lower()}, true );
+
error_text, error_state = set_error( 'parameter_ignored_suggest', {k, k:lower()}, true );
 
else
 
else
 
if #suggestions == 0 then
 
if #suggestions == 0 then
Line 2,694: Line 2,837:
 
end
 
end
 
if suggestions[ k:lower() ] ~= nil then
 
if suggestions[ k:lower() ] ~= nil then
error_text, error_state = seterror( 'parameter_ignored_suggest', {k, suggestions[ k:lower() ]}, true );
+
error_text, error_state = set_error( 'parameter_ignored_suggest', {k, suggestions[ k:lower() ]}, true );
 
else
 
else
error_text, error_state = seterror( 'parameter_ignored', {k}, true );
+
error_text, error_state = set_error( 'parameter_ignored', {k}, true );
 
end
 
end
 
end    
 
end    

Revision as of 04:13, 21 March 2015

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


local z = {
	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 >--------------------------------------
]]
local dates, year_date_check	-- functions in Module:Citation/CS1/Date_validation

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

Returns true if argument is set; false otherwise. Argument is 'set' when it exists (not nil) or when it is not an empty string.
This function is global because it is called from both this module and from Date validation

]]
function is_set( var )
	return not (var == nil or var == '');
end

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

First set variable or nil if none

]]

local function first_set(...)
	local list = {...};
	for _, var in pairs(list) do
		if is_set( var ) then
			return var;
		end
	end
end

--[[--------------------------< I N _ A R R A Y >--------------------------------------------------------------

Whether needle is in haystack

]]

local function in_array( needle, haystack )
	if needle == nil then
		return false;
	end
	for n,v in ipairs( haystack ) do
		if v == needle then
			return n;
		end
	end
	return false;
end

--[[--------------------------< S U B S T I T U T E >----------------------------------------------------------

Populates numbered arguments in a message string using an argument table.

]]

local function substitute( msg, args )
	return args and mw.message.newRawMessage( msg, args ):plain() or msg;
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.

]]
local function error_comment( content, hidden )
	return substitute( hidden and cfg.presentation['hidden-error'] or cfg.presentation['visible-error'], content );
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
the responsibility of the calling function.

]]
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

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

Determines whether a URL string is valid.

At present the only check is whether the string appears to be prefixed with a URI scheme.  It is not determined whether 
the URI scheme is valid or whether the URL is otherwise well formed.

]]

local function check_url( url_str )
	return url_str:sub(1,2) == "//" or url_str:match( "^[^/]*:" ) ~= nil;		-- Protocol-relative or URL scheme
end

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

Protects a string that will be wrapped in wiki italic markup '' ... ''

Note: We cannot use <i> for italics, as the expected behavior for italics specified by ''...'' in the title is that
they will be inverted (i.e. unitalicized) in the resulting references.  In addition, <i> and '' tend to interact
poorly under Mediawiki's HTML tidy.

]]

local function safe_for_italics( str )
	if not is_set(str) then
		return str;
	else
		if str:sub(1,1) == "'" then str = "<span />" .. str; end
		if str:sub(-1,-1) == "'" then str = str .. "<span />"; end
		
		-- Remove newlines as they break italics.
		return str:gsub( '\n', ' ' );
	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

--[[--------------------------< 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
argument; protects italic styled parameters.  Additional text taken from citation_config.presentation - the reason
this function is similar to but separate from wrap_msg().

]]

local function wrap_style (key, str)
	if not is_set( str ) then
		return "";
	elseif in_array( key, { 'italic-title', 'trans-italic-title' } ) then
		str = safe_for_italics( str );
	end

	return substitute( cfg.presentation[key], {str} );
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', {}, 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 >----------------------------------------------

Formats a wiki style external link

]]

local function external_link_id(options)
	local url_string = options.id;
	if options.encode == true or options.encode == nil then
		url_string = mw.uri.encode( url_string );
	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

--[[
Categorize and emit an error message when the citation contains one or more deprecated parameters.  Because deprecated parameters (currently |month=,
|coauthor=, and |coauthors=) aren't related to each other and because these parameters may be concatenated into the variables used by |date= and |author#= (and aliases)
details of which parameter caused the error message are not provided.  Only one error message is emitted regardless of the number of deprecated parameters in the citation.
]]
local function deprecated_parameter(name)
	if true ~= Page_in_deprecated_cat then	-- if we haven't been here before then set a 
		Page_in_deprecated_cat=true;		-- sticky flag so that if there are more than one deprecated parameter the category is added only once
		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.

At this writing, only |script-title= is supported.  It is anticipated that additional parameters will be created to use this function.

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, {'ar', 'bg', 'bs', 'dv', 'el', 'fa', 'hy', 'ja', 'ka', 'ko', 'ku', 'he', 'ps', 'ru', 'sd', 'sr', 'th', 'uk', 'ug', 'yi', 'zh'}) then
				table.insert( z.properties_cats, 'CS1 uses ' .. name .. '-language script ('..lang..')');	-- categorize in language-specific categories
			else
				table.insert( z.properties_cats, 'CS1 uses foreign language script');	-- use this category as a catchall until language-specific category is available
			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 
		str = substitute( msg, {str} );											-- including template text
		return str;
	else
		return substitute( cfg.messages[key], {str} );
	end		
end
--[[--------------------------< S E L E C T _ O N E >----------------------------------------------------------

Chooses one matching parameter from a list of parameters to consider
Generates an error if more than one match is present.

]]

local function select_one( args, possible, error_condition, index )
	local value = nil;
	local selected = '';
	local error_list = {};
	
	if index ~= nil then index = tostring(index); end
	
	-- Handle special case of "#" replaced by empty string
	if index == '1' then
		for _, v in ipairs( possible ) do
			v = v:gsub( "#", "" );
			if is_set(args[v]) then
				if value ~= nil and selected ~= v then
					table.insert( error_list, v );
				else
					value = args[v];
					selected = v;
				end
			end
		end		
	end
	
	for _, v in ipairs( possible ) do
		if index ~= nil then
			v = v:gsub( "#", index );
		end
		if is_set(args[v]) then
			if value ~= nil and selected ~=  v then
				table.insert( error_list, v );
			else
				value = args[v];
				selected = v;
			end
		end
	end
	
	if #error_list > 0 then
		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

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

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

]]

local function format_chapter_title (chapter, transchapter, chapterurl, chapter_url_source)
	local chapter_error = '';
	
	if not is_set (chapter) then
		chapter = '';															-- just to be safe for concatenation
		if is_set (transchapter) then
			chapter = wrap_style ('trans-quoted-title', transchapter);
			chapter_error = " " .. set_error ('trans_missing_chapter');
		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;
	else																		-- here when chapter is set
		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);
		if is_set (transchapter) then
			transchapter = wrap_style ('trans-quoted-title', transchapter);
			chapter = chapter .. ' ' .. transchapter;
		end
		if is_set (chapterurl) then
			chapter = external_link (chapterurl, chapter);						-- adds bare_url_missing_title error if appropriate
		end
	end
	return chapter;
end

--[[
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

--[[
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


-- Formats a wiki style internal link
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


--[[--------------------------< 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

--[[--------------------------< IS _ V A L I D _ I S X N >-----------------------------------------------------

ISBN-10 and ISSN validator code calculates checksum across all isbn/issn digits including the check digit. ISBN-13 is checked in check_isbn().
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,
spaces and other non-isxn characters.

]]

local function is_valid_isxn (isxn_str, len)
	local temp = 0;
	isxn_str = { isxn_str:byte(1, len) };	-- make a table of bytes
	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
			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


--[[--------------------------< C H E C K _ I S B N >------------------------------------------------------------

Determines whether an ISBN string is valid

]]

local function check_isbn( isbn_str )
	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
	isbn_str = isbn_str:gsub( "-", "" ):gsub( " ", "" );	-- remove hyphens and spaces
	local len = isbn_str:len();
 
	if len ~= 10 and len ~= 13 then
		return false;
	end

	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
		isbn_str = { isbn_str:byte(1, len) };
		for i, v in ipairs( isbn_str ) do
			temp = temp + (3 - 2*(i % 2)) * tonumber( string.char(v) );
		end
		return temp % 10 == 0;
	end
end

--[[--------------------------< I S S N >----------------------------------------------------------------------

Validate and format an issn.  This code fixes the case where an editor has included an ISSN in the citation but has separated the two groups of four
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
	
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
with the calculated value.  Incorrect 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.

]]

local function issn(id)
	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

	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
		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 >------------------------------------------------------------------

Formats a link to Amazon.  Do simple error checking: asin must be mix of 10 numeric or uppercase alpha
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.

]]

local function amazon(id, domain)
	local err_cat = ""

	if not id:match("^[%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u]$") then
		err_cat =  ' ' .. set_error ('bad_asin');								-- asin is not a mix of 10 uppercase alpha and numeric characters
	else
		if id:match("^%d%d%d%d%d%d%d%d%d[%dX]$") then								-- if 10-digit numeric (or 9 digits with terminal X)
			if check_isbn( id ) then												-- see if asin value is isbn10
				table.insert( z.maintenance_cats, 'CS1 maint: ASIN uses ISBN');	-- add to maint category
			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
	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="//www.amazon."..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:
	arXiv:<date code>.<number><version>
where:
	<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
	<number> is a four-digit number
	<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)
	local handler = cfg.id_handlers['ARXIV'];
	local year, month, version;
	local err_cat = ""
	
	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
		year, month = id:match("^%a[%a%.%-]+/([90]%d)([01]%d)%d%d%d[v%d]*$");
		year = tonumber(year);
		month = tonumber(month);
		if ((not (90 < year or 8 > year)) or (1 > month or 12 < month)) or		-- if invalid year or invalid month
			((91 == year and 7 > month) or (7 == year and 3 < month)) then		-- if years ok, are starting and ending months ok?
				err_cat = ' ' .. set_error( 'bad_arxiv' );						-- set error message
		end
	elseif id:match("^%d%d[01]%d%.%d%d%d%d$") or id:match("^%d%d[01]%d%.%d%d%d%dv%d+$") then	-- test for the 0704-1412 w/ & w/o version
		year, month = id:match("^(%d%d)([01]%d)%.%d%d%d%d[v%d]*$");
		year = tonumber(year);
		month = tonumber(month);
		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)?
				err_cat = ' ' .. set_error( 'bad_arxiv' );						-- set error message
		end
	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
		year, month = id:match("^(%d%d)([01]%d)%.%d%d%d%d%d[v%d]*$");
		year = tonumber(year);
		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

	return external_link_id({link = handler.link, label = handler.label,
			prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
end


--[[
lccn normalization (http://www.loc.gov/marc/lccn-namespace.html#normalization)
1. Remove all blanks.
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)
	lccn = lccn:gsub ("%s", "");									-- 1. strip whitespace

	if nil ~= string.find (lccn,'/') then
		lccn = lccn:match ("(.-)/");								-- 2. remove forward slash and all character to the right of it
	end

	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
		suffix=string.rep("0", 6-string.len (suffix)) .. suffix;	-- 3.b.2 left fill the suffix with 0s if suffix length less than 6
		lccn=prefix..suffix;										-- reassemble the lccn
	end
	
	return lccn;
	end

--[[
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
length = 9 then lccn[1] is lower case alpha
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 handler = cfg.id_handlers['LCCN'];
	local err_cat =  '';								-- presume that LCCN is valid
	local id = lccn;									-- local copy of the lccn

	id = normalize_lccn (id);							-- get canonical form (no whitespace, hyphens, forward slashes)
	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

	if not is_set (err_cat) and nil ~= lccn:find ('%s') then
		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

--[[
Format PMID and do simple error checking.  PMIDs 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.
]]
local function pmid(id)
	local test_limit = 30000000;						-- update this value as PMIDs approach
	local handler = cfg.id_handlers['PMID'];
	local err_cat =  '';								-- presume that PMID is valid
	
	if id:match("[^%d]") then							-- if PMID has anything but digits
		err_cat = ' ' .. set_error( 'bad_pmid' );		-- set an error message
	else												-- PMID 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 PMID is outside test limit boundaries
			err_cat = ' ' .. set_error( 'bad_pmid' );	-- set an error message
		end
	end
	
	return external_link_id({link = handler.link, label = handler.label,
			prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
end

--[[
Determines if a PMC identifier's online version is embargoed. Compares the date in |embargo= against today's date.  If embargo date is
in the future, returns true; otherwise, returns false because the embargo has expired or |embargo= not set in this cite.
]]
local function is_embargoed(embargo)
	if is_set(embargo) then
		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 and tonumber( embargo_date ) >= tonumber( todays_date ) then	--is embargo date is in the future?
			return true;	-- still embargoed
		end
	end
	return false;			-- embargo expired or |embargo= not set
end

--[[
Format a PMC, do simple error checking, and check for embargoed articles.

The embargo parameter takes a date for a value. If the embargo date is in the future
the PMC identifier will not be linked to the article.  If the embargo specifies a date in the past, or if it is empty or omitted, then
the PMC identifier is linked to the article through the link at cfg.id_handlers['PMC'].prefix.

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 test_limit = 5000000;							-- update this value as PMCs approach
	local handler = cfg.id_handlers['PMC'];
	local err_cat =  '';								-- presume that PMC is valid
	
	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
	
	if is_embargoed(embargo) then
		text="[[" .. handler.link .. "|" .. handler.label .. "]]:" .. handler.separator .. id .. err_cat;	--still embargoed so no external link
	else
		text = external_link_id({link = handler.link, label = handler.label,			--no embargo date, ok to link to article
			prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
	end
	return text;
end

-- Formats a DOI and checks for DOI errors.

-- DOI names contain two parts: prefix and suffix separated by a forward slash.
--  Prefix: directory indicator '10.' followed by a registrant code
--  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,
-- or, if it ends with a period or a comma, this function will emit a bad_doi error message.

-- DOI names are case-insensitive and can incorporate any printable Unicode characters so the test for spaces, endash,
-- and terminal punctuation may not be technically correct but it appears, that in practice these characters are rarely if ever used in doi names.

local function doi(id, inactive)
	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
		cat = ' ' .. set_error( 'bad_doi' );
	end
	return text .. inactive .. cat 
end

-- 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
		return external_link_id({link=handler.link, label=handler.label,
			prefix="http://openlibrary.org/authors/OL",id=id, separator=handler.separator,
			encode = handler.encode})
	elseif ( code == "M" ) then
		return external_link_id({link=handler.link, label=handler.label,
			prefix="http://openlibrary.org/books/OL",id=id, separator=handler.separator,
			encode = handler.encode})
	elseif ( code == "W" ) then
		return external_link_id({link=handler.link, label=handler.label,
			prefix= "http://openlibrary.org/works/OL",id=id, separator=handler.separator,
			encode = handler.encode})
	else
		return external_link_id({link=handler.link, label=handler.label,
			prefix= "http://openlibrary.org/OL",id=id, separator=handler.separator,
			encode = handler.encode}) .. 
			' ' .. set_error( 'bad_ol' );
	end
end


--[[--------------------------< M E S S A G E _ I D >----------------------------------------------------------

Validate and format a usenet message id.  Simple error checking, looks for 'id-left@id-right' not enclosed in
'<' and/or '>' angle brackets.

]]

local function message_id (id)
	local handler = cfg.id_handlers['USENETID'];

	text = external_link_id({link = handler.link, label = handler.label,
		prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
 
	if not id:match('^.+@.+$') or not id:match('^[^<].*[^>]$')then				-- doesn't have '@' or has one or first or last character is '< or '>'
		text = text .. ' ' .. set_error( 'bad_message_id' )						-- add an error message if the message id is invalid
	end 
	
	return text
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 citations 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

	if "AV-media-notes" == cite_class or "DVD-notes" == cite_class then		-- if this citation is cite AV media notes or cite DVD notes
		return "Media notes";					-- display AV media notes / DVD media notes annotation

	elseif "mailinglist" == cite_class then		-- if this citation is cite mailing list
		return "Mailing list";					-- display mailing list annotation

	elseif "map" == cite_class then				-- if this citation is cite map
		return "Map";							-- display map annotation

	elseif "podcast" == cite_class then			-- if this citation is cite podcast
		return "Podcast";						-- display podcast annotation

	elseif "pressrelease" == cite_class then	-- if this citation is cite press release
		return "Press release";					-- display press release annotation

	elseif "report" == cite_class then			-- if this citation is cite report
		return "Report";						-- display report annotation
	
	elseif "techreport" == cite_class then		-- if this citation is cite techreport
		return "Technical report";				-- display techreport annotation
	
	elseif "thesis" == cite_class then			-- if this citation is cite thesis (degree option handled after this function returns)
			return "Thesis";					-- display simple thesis annotation (without |degree= modification)
	end
end

-- Removes irrelevant text and dashes from ISBN number
-- Similar to that used for Special:BookSources
local function clean_isbn( isbn_str )
	return isbn_str:gsub( "[^-0-9X]", "" );
end

--[[--------------------------< E S C A P E _ L U A _ M A G I C _ C H A R S >----------------------------------

Returns a string where all of lua's magic characters have been escaped.  This is important because functions like
string.gsub() treat their pattern and replace strings as patterns, not literal strings.
]]
local function escape_lua_magic_chars (argument)
	argument = argument:gsub("%%", "%%%%");										-- replace % with %%
	argument = argument:gsub("([%^%$%(%)%.%[%]%*%+%-%?])", "%%%1");				-- replace all other lua magic pattern characters
	return argument;
end

--[[--------------------------< S T R I P _ A P O S T R O P H E _ M A R K U P >--------------------------------

Strip wiki italic and bold markup from argument so that it doesn't contaminate COinS metadata.
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.

]]
local function strip_apostrophe_markup (argument)
	if not is_set (argument) then return argument; end

	while true do
		if argument:match ("%'%'%'%'%'") then									-- bold italic (5)
			argument=argument:gsub("%'%'%'%'%'", "");							-- remove all instances of it
		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 >----------------------------------------------

Makes a title for COinS from Title and / or ScriptTitle (or any other name-script pairs)

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)
	if is_set (title) then
		title = strip_apostrophe_markup (title);								-- strip any apostrophe markup
	else
		title='';																-- if not set, make sure title is an empty string
	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)
		script = strip_apostrophe_markup (script);								-- strip any apostrophe markup
	else
		script='';																-- if not set, make sure script is an empty string
	end
	if is_set (title) and is_set (script) then
		script = ' ' .. script;													-- add a space before we concatenate
	end
	return title .. script;														-- return the concatenation
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.

]]
local function get_coins_pages (pages)
	local pattern;
	if not is_set (pages) then return pages; end								-- if no page numbers then we're done
	
	while true do
		pattern = pages:match("%[(%w*:?//[^ ]+%s+)[%w%d].*%]");					-- pattern is the opening bracket, the url and following space(s): "[url "
		if nil == pattern then break; end										-- no more urls
		pattern = escape_lua_magic_chars (pattern);								-- pattern is not a literal string; escape lua's magic pattern characters
		pages = pages:gsub(pattern, "");										-- remove as many instances of pattern as possible
	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

-- Gets the display text for a wikilink like [[A|B]] or [[B]] gives B
local function remove_wiki_link( str )
	return (str:gsub( "%[%[([^%[%]]*)%]%]", function(l)
		return l:gsub( "^[^|]*|(.*)$", "%1" ):gsub("^%s*(.-)%s*$", "%1");
	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 >------------------------------------------------------------

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 module can, however, check
the content of |lastn= and |firstn= to see if the names contain non-Latin (non-ASCII) characters and emit an error message
when such characters are located.

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

local function is_good_vanc_name (last, first)
	if last:find ("[^%a%-%'%s]") or first:find ("[^%a%-%'%s%.]") then												
		if true ~= Page_in_vanc_error_cat then									-- if we haven't been here before then set a sticky flag
			Page_in_vanc_error_cat=true;										-- so that if there are more than one error the category is added only once
			table.insert( z.message_tail, { set_error( 'vancouver', {}, true ) } );
		end
		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/.

]]

local function reduce_to_initials(first)
	if first:match("^%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 string.gmatch(first, "[^%s%.%-]+") do							-- names separated by spaces, hyphens, or periods
		table.insert(initials, string.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)
	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 maximum ~= nil and maximum < 1 then return "", 0; end
	
	for i,person in ipairs(people) do
		if is_set(person.last) then
			local mask = person.mask
			local one
			local sep_one = sep;
			if maximum ~= nil 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 is_good_vanc_name (one, first) then					-- and name is all Latin characters
							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

				if is_set(person.link) and ((nil ~= person.link:find("//")) or (nil ~= person.link:find("[%[%]]"))) then
					one = one .. " " .. set_error( 'bad_authorlink' ) end	-- url or wikilink in author link;
			end
			table.insert( text, one )
			table.insert( text, sep_one )
		end
	end

	local count = #text / 2;
	if count > 0 then 
		if count > 1 and is_set(lastauthoramp) and not etal then
			text[#text-2] = " & ";
		end
		text[#text] = nil; 
	end
	
	local result = table.concat(text) -- construct list
	if etal then 
		local etal_text = cfg.messages['et al'];
		result = result .. " " .. etal_text;
	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.

]]

local function anchor_id( options )
	local id = table.concat( options );											-- 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

--[[--------------------------< 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 pattern = ",? *'*[Ee][Tt] *[Aa][Ll][%.']*$"							-- variations on the 'et al' theme
	
	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 );

		local name = tostring(last);
		if name:match (pattern) then											-- varients on et al.
			last = name:gsub (pattern, '');										-- if found, remove
			etal = true;
		end
		name = tostring(first);
		if name:match (pattern) then											-- varients on et al.
			first = name:gsub (pattern, '');									-- if found, remove
			etal = true;
		end

		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
			names[n] = {last = last, first = first, link = link, mask = mask};	-- add this name to our names list
			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
	
	if true == etal then
		table.insert( z.maintenance_cats, 'CS1 maint: Explicit use of et al.');	-- add to maint category
	end
	return names, etal;															-- all done, return our list of names
end

-- Populates ID table from arguments using configuration settings
local function extract_ids( args )
	local id_list = {};
	for k, v in pairs( cfg.id_handlers ) do	
		v = select_one( args, v.parameters, 'redundant_parameters' );
		if is_set(v) then id_list[k] = v; end
	end
	return id_list;
end

--[[--------------------------< B U I L D _ I D _ L I S T >--------------------------------------------------------
Takes a table of IDs and turns it into a table of formatted ID outputs.

]]
local function build_id_list( id_list, options )
	local new_list, handler = {};

	function fallback(k) return { __index = function(t,i) return cfg.id_handlers[k][i] end } end;
	
	for k, v in pairs( id_list ) do
		-- fallback to read-only cfg
		handler = setmetatable( { ['id'] = v }, fallback(k) );
		
		if handler.mode == 'external' then
			table.insert( new_list, {handler.label, external_link_id( handler ) } );
		elseif handler.mode == 'internal' then
			table.insert( new_list, {handler.label, internal_link_id( handler ) } );
		elseif handler.mode ~= 'manual' then
			error( cfg.messages['unknown_ID_mode'] );
		elseif k == 'DOI' then
			table.insert( new_list, {handler.label, doi( v, options.DoiBroken ) } );
		elseif k == 'ARXIV' then
			table.insert( new_list, {handler.label, arxiv( v ) } ); 
		elseif k == 'ASIN' then
			table.insert( new_list, {handler.label, amazon( v, options.ASINTLD ) } ); 
		elseif k == 'LCCN' then
			table.insert( new_list, {handler.label, lccn( v ) } );
		elseif k == 'OL' then
			table.insert( new_list, {handler.label, openlibrary( v ) } );
		elseif k == 'PMC' then
			table.insert( new_list, {handler.label, pmc( v, options.Embargo ) } );
		elseif k == 'PMID' then
			table.insert( new_list, {handler.label, pmid( 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
	
	table.sort( new_list, comp );
	for k, v in ipairs( new_list ) do
		new_list[k] = v[2];
	end
	
	return new_list;
end
  

-- COinS metadata (see <http://ocoins.info/>) allows automated tools to parse
-- the citation information.
local function COinS(data)
	if 'table' ~= type(data) or nil == next(data) then
		return '';
	end
	
	local ctx_ver = "Z39.88-2004";
	
	-- treat table strictly as an array with only set values.
	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
	});
	
	if is_set(data.Chapter) then
		OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
		OCinSoutput["rft.genre"] = "bookitem";
		OCinSoutput["rft.atitle"] = data.Chapter;
		OCinSoutput["rft.btitle"] = data.Title;
	elseif is_set(data.Periodical) then
		OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:journal";
		OCinSoutput["rft.genre"] = "article";
		OCinSoutput["rft.jtitle"] = data.Periodical;
		OCinSoutput["rft.atitle"] = data.Title;
	else
		OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
		OCinSoutput["rft.genre"] = "book"
		OCinSoutput["rft.btitle"] = data.Title;
	end
	
	OCinSoutput["rft.place"] = data.PublicationPlace;
	OCinSoutput["rft.date"] = data.Date;
	OCinSoutput["rft.series"] = data.Series;
	OCinSoutput["rft.volume"] = data.Volume;
	OCinSoutput["rft.issue"] = data.Issue;
	OCinSoutput["rft.pages"] = data.Pages;
	OCinSoutput["rft.edition"] = data.Edition;
	OCinSoutput["rft.pub"] = data.PublisherName;
	
	for k, v in pairs( data.ID_list ) do
		local id, value = cfg.id_handlers[k].COinS;
		if k == 'ISBN' then value = clean_isbn( v ); else value = v; end
		if string.sub( id or "", 1, 4 ) == 'info' then
			OCinSoutput["rft_id"] = table.concat{ id, "/", v };
		else
			OCinSoutput[ id ] = value;
		end
	end
	
	local last, first;
	for k, v in ipairs( data.Authors ) do
		last, first = v.last, v.first;
		if k == 1 then
			if is_set(last) then
				OCinSoutput["rft.aulast"] = last;
			end
			if is_set(first) then 
				OCinSoutput["rft.aufirst"] = first;
			end
		end
		if is_set(last) and is_set(first) then
			OCinSoutput["rft.au"] = table.concat{ last, ", ", first };
		elseif is_set(last) then
			OCinSoutput["rft.au"] = last;
		end
	end
	
	OCinSoutput.rft_id = data.URL;
	OCinSoutput.rfr_id = table.concat{ "info:sid/", mw.site.server:match( "[^/]*$" ), ":", data.RawPage };
	OCinSoutput = setmetatable( OCinSoutput, nil );
	
	-- 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


--[[--------------------------< 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.

]]

local function language_parameter (lang, namespace)
	local code;			-- the ISO639-1 two character code
	local name;			-- the language name
	local test='';
		
	if 0 == namespace and (('en' == lang:lower()) or ('english' == lang:lower())) then
		table.insert (z.maintenance_cats, 'CS1 maint: English language specified');		-- add maintenance category if |language=English or |language=en in article space
	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 0 == namespace and 'en' ~= code then									-- is this page main / article space and English not the language?
			table.insert( z.properties_cats, 'CS1 ' .. name .. '-language sources (' .. code .. ')');	-- in main space and not English: categorize
		end
	else
		table.insert (z.maintenance_cats, 'CS1 maint: Unrecognized language');	-- add maintenance category when |language= does not appear to be ISO 639-1 language
	end
	return (" " .. wrap_msg ('language', name));								-- wrap with '(in ...)'
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 = ',';																-- set citation separator to its default (comma)
		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
	else																		-- not a citation template so CS1
		sep = '.';																-- set cite xxx separator to its default (period)
		if not is_set (ps) then													-- if |postscript= has not been set
			ps = '.';															-- set cs1 default
		end
	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 is_set (mode) then
		if 'cs2' == mode then											-- if this template is to be rendered in CS2 (citation) style
			sep = ',';															-- separate elements with a comma
			if not is_set (ps) then												-- unless explicitely set to something
				ps = '';														-- make sure it isn't nil
			end
			if not is_set (ref) then											-- unless explicitely set to something
				ref = 'harv';													-- set so this template renders with CITEREF anchor id
			end
		elseif 'cs1' == mode then										-- if this template is to be rendered in CS1 (cite xxx) style
			sep = '.';															-- separate elements with a period
			if not is_set (ps) then												-- unless explicitely set to something
				ps = '.';														-- terminate the rendered citation with a period
			end
		else																	-- anything but cs1 or cs2
			table.insert( z.message_tail, { set_error( 'invalid_param_val', {'mode', mode}, true ) } );		-- add error message
			sep, ps, ref = get_settings_from_cite_class (ps, ref, cite_class);	-- get settings based on the template's CitationClass
		end
	else													-- when |mode= empty or omitted
		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


--[[--------------------------< 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 
	local PPrefix = A['PPrefix']
	local PPPrefix = A['PPPrefix']
	if is_set( A['NoPP'] ) then PPPrefix = "" PPrefix = "" end
	
	-- Pick out the relevant fields from the arguments.  Different citation templates
	-- define different field names for the same underlying things.	
	local Authors = A['Authors'];
	local author_etal;
	local a, author_etal = extract_names( args, 'AuthorList' );

	local Coauthors = A['Coauthors'];
	local Others = A['Others'];
	local Editors = A['Editors'];
	local editor_etal;
	local e, editor_etal = extract_names( args, 'EditorList' );

	local NameListFormat = A['NameListFormat'];									-- replaces |author-format= and |editor-format=
	if is_set (NameListFormat) and ('vanc' ~= NameListFormat) then											-- only accepted value for this parameter is 'vanc'
		table.insert( z.message_tail, { set_error( 'invalid_param_val', {'name-list-format', NameListFormat}, true ) } );	-- not vanc so add error message
		NameListFormat = '';													-- 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'];
	local Chapter = A['Chapter'];
	local ChapterLink = A['ChapterLink'];										-- deprecated
	local TransChapter = A['TransChapter'];
	local TitleType = A['TitleType'];
	local Degree = A['Degree'];
	local Docket = A['Docket'];
	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 ConferenceURL = A['ConferenceURL'];
	local ConferenceURLorigin = A:ORIGIN('ConferenceURL');						-- get name of parameter that holds ConferenceURL
	local Periodical = A['Periodical'];

	local Series = A['Series'];
	local Volume = A['Volume'];
	local Issue = A['Issue'];
	local Position = '';
	local Page = A['Page'];
	local Pages = hyphen_to_dash( A['Pages'] );	
	local At = A['At'];

	local Edition = A['Edition'];
	local PublicationPlace = A['PublicationPlace']
	local Place = A['Place'];
	
	local PublisherName = A['PublisherName'];
	local RegistrationRequired = A['RegistrationRequired'];
	local SubscriptionRequired = A['SubscriptionRequired'];
	local Via = A['Via'];
	local AccessDate = A['AccessDate'];
	local ArchiveDate = A['ArchiveDate'];
	local Agency = A['Agency'];
	local DeadURL = A['DeadURL']
	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'];
	local Embargo = A['Embargo'];

	local ID_list = extract_ids( args );

	local Quote = A['Quote'];

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

	local LastAuthorAmp = A['LastAuthorAmp'];
	local no_tracking_cats = A['NoTracking'];

--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;									-- used in the COinS metadata

-- set default parameter values defined by |mode= parameter.  If |mode= is empty or omitted, use CitationClass to set these values
	local sepc;											-- separator between citation elements for CS1 a period, for CS2, a comma
	local PostScript;
	local Ref;
	sepc, PostScript, Ref = set_style (A['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
	end

-- check for extra |page=, |pages= or |at= parameters. 
	if is_set(Page) then
		if is_set(Pages) or is_set(At) then
			Page = Page .. " " .. set_error('extra_pages');	-- add error message
			Pages = '';										-- unset the others
			At = '';
		end
	elseif is_set(Pages) then
		if is_set(At) then
			Pages = Pages .. " " .. set_error('extra_pages');	-- add error messages
			At = '';											-- unset
		end
	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
TODO: script-title to script-chapter if and when we support script-chapter
]]

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) then
				if not is_set(Chapter) then
					Chapter = Title;				-- |encyclopedia and |title are set so map |title to |article and |encyclopedia to |title
					TransChapter = TransTitle;
					ChapterURL = URL;
					Title = Periodical;
					ChapterFormat = Format;
					Periodical = '';				-- redundant so unset
					TransTitle = '';				-- redundant so unset
					URL = '';						-- redundant so unset
					Format = '';					-- redundant so unset
				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(Issue) then						-- cite techreport uses 'number', which other citations aliase to 'issue'
			if not is_set(ID) then					-- can we use ID for the "number"?
				ID = Issue;							-- yes, use it
				Issue = "";							-- unset Issue so that "number" isn't duplicated in the rendered citation or COinS metadata
			else									-- can't use ID so emit error message
				ID = ID .. " " .. set_error('redundant_parameters', '<code>&#124;id=</code> and <code>&#124;number=</code>');
			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'];
	end

--Account for the oddity that is {{cite journal}} with |pmc= set and |url= not set
	if config.CitationClass == "journal" and not is_set(URL) and is_set(ID_list['PMC']) then
		if not is_embargoed(Embargo) then
			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

-- 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
	else
		Conference = '';														-- not cite conference so make sure this is empty string
	end

-- Account for the oddity that is {{cite episode}}, before generation of COinS data.
--[[	-- {{cite episode}} is not currently supported by this module
	if config.CitationClass == "episode" then
		local AirDate = A['AirDate'];
		local SeriesLink = A['SeriesLink'];
		local Season = A['Season'];
		local SeriesNumber = A['SeriesNumber'];
		local Network = A['Network'];
		local Station = A['Station'];
		local s, n = {}, {};
		local Sep = (first_set(A["SeriesSeparator"], A["Separator"]) or "") .. " ";
		
		if is_set(Issue) then table.insert(s, cfg.messages["episode"] .. " " .. Issue); Issue = ''; end
		if is_set(Season) then table.insert(s, cfg.messages["season"] .. " " .. Season); end
		if is_set(SeriesNumber) then table.insert(s, cfg.messages["series"] .. " " .. SeriesNumber); end
		if is_set(Network) then table.insert(n, Network); end
		if is_set(Station) then table.insert(n, Station); end
		
		Date = Date or AirDate;
		Chapter = Title;
		ChapterLink = TitleLink;
		TransChapter = TransTitle;
		Title = Series;
		TitleLink = SeriesLink;
		TransTitle = '';
		
		Series = table.concat(s, Sep);
		ID = table.concat(n, Sep);
	end
-- end of {{cite episode}} stuff]]

-- 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 is_set(Date) then
			local Month = A['Month'];
			if is_set(Month) then
				Date = Month .. " " .. Date;
			end
		elseif 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 = '';

		anchor_year, COinS_date, error_message = dates({['accessdate']=AccessDate, ['airdate']=AirDate, ['archivedate']=ArchiveDate, ['date']=Date, ['doi_brokendate']=DoiBroken,
			['embargo']=Embargo, ['laydate']=LayDate, ['publicationdate']=PublicationDate, ['year']=Year});

		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=
				table.insert( z.maintenance_cats, 'CS1 maint: Date and year');	-- add to maint category
			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

-- 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
		table.insert( z.message_tail, { set_error( 'citation_missing_title', {}, true ) } );
	end
	
	if 'none' == Title and is_set(Periodical) and not (( config.CitationClass == "encyclopaedia" ) or ( config.CitationClass == "citation" and is_set (Encyclopedia))) then								-- special case
		Title = '';																-- set title to empty string
		table.insert( z.maintenance_cats, 'CS1 maint: Untitled periodical');	-- add to maint category
	end

	-- 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
	
	-- this is the function call to COinS()
	local OCinSoutput = COinS{
		['Periodical'] = Periodical,
		['Chapter'] = strip_apostrophe_markup (coins_chapter),					-- Chapter stripped of bold / italic wikimarkup
		['Title'] = make_coins_title (coins_title, ScriptTitle),				-- Title and ScriptTitle stripped of bold / italic wikimarkup
		['PublicationPlace'] = PublicationPlace,
		['Date'] = first_set(COinS_date, Date),		-- COinS_date has correctly formatted date if Date is valid; any reason to keep Date here?  Should we be including invalid dates in metadata?
		['Series'] = Series,
		['Volume'] = Volume,
		['Issue'] = Issue,
		['Pages'] = get_coins_pages (first_set(Page, Pages, At)),				-- pages stripped of external links
		['Edition'] = Edition,
		['PublisherName'] = PublisherName,
		['URL'] = first_set( URL, ChapterURL ),
		['Authors'] = a,
		['ID_list'] = ID_list,
		['RawPage'] = this_page.prefixedText,
	};

-- 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 = '[[Newsgroup]]:&nbsp;' ..  external_link( 'news:' .. PublisherName, 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.
	if not is_set(Authors) then
		local Maximum = tonumber( A['DisplayAuthors'] );

		if is_set (Maximum) then
			if Maximum >= #a then												-- if display-authors value greater than or equal to number of authors
				table.insert( z.maintenance_cats, 'CS1 maint: display-authors');	-- add maintenance category because display-authors parameter may be removed
			end
		else
			Maximum = #a + 1;													-- number of authors + 1
		end

		local control = { 
			format = NameListFormat,											-- empty string or 'vanc'
			maximum = Maximum,
			lastauthoramp = LastAuthorAmp,
			page_name = this_page.text				-- get current page name so that we don't wikilink to it via authorlinkn
		};
		
		-- If the coauthor field is also used, prevent ampersand and et al. formatting.
		if is_set(Coauthors) then
			control.lastauthoramp = nil;
			control.maximum = #a + 1;
		end
		
		Authors = list_people(control, a, author_etal) 
	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

	local EditorCount
	if not is_set(Editors) then
		local Maximum = tonumber( A['DisplayEditors'] );
		-- 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) } );
		elseif not is_set(Maximum) then
			Maximum = #e + 1;
		end

		local control = { 
			format = NameListFormat,											-- empty string or 'vanc'
			maximum = Maximum,
			lastauthoramp = LastAuthorAmp,
			page_name = this_page.text				-- get current page name so that we don't wikilink to it via editorlinkn
		};

		Editors, EditorCount = list_people(control, e, editor_etal);
	else
		EditorCount = 1;
	end

-- cite map oddities
	local Cartography = "";
	local Scale = "";
	if config.CitationClass == "map" then
		Chapter = A['Map'];
		ChapterURL = A['MapURL'];
		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
	
	Format = is_set(Format) and " (" .. Format .. ")" or "";

	if  not is_set(URL) and
		not is_set(ArchiveURL) and
		not is_set(ConferenceURL) and											-- TODO: keep this here? conference as part of cite web or cite podcast?
		not is_set(TranscriptURL) then
		
		-- Test if cite web or cite podcast |url= is missing or empty 
		if in_array(config.CitationClass, {"web","podcast", "mailinglist"}) then	
			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
		
		-- Test if format is given without giving a URL
		if is_set(Format) then
			Format = Format .. set_error( 'format_missing_url', {'format', 'url'} );
		end
	end

	local OriginalURL;
	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
			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
			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
			if 'no' ~= DeadURL then
				ChapterURL = ArchiveURL											-- swap-in the archive's url
				URLorigin = A:ORIGIN('ArchiveURL')								-- name of archive url parameter for error messages
			end
		end
	end

	if in_array(config.CitationClass, {"web","news","journal","pressrelease","podcast", "newsgroup"}) or
		('citation' == config.CitationClass and is_set (Periodical) and not is_set (Encyclopedia)) then
			if is_set (Chapter) or is_set (TransChapter) or is_set (ChapterURL)then	-- chapter parameters not supported for these citation types
				table.insert( z.message_tail, { set_error( 'chapter_ignored', {}, true ) } );		-- add error message
				Chapter = '';														-- set to empty string to be safe with concatenation
				TransChapter = '';
				ChapterURL = '';
			end
	else																		-- otherwise, format chapter / article title
		Chapter = format_chapter_title (Chapter, TransChapter, ChapterURL, ChapterURLorigin);
		if is_set (Chapter) then
			ChapterFormat = is_set(ChapterFormat) and " (" .. ChapterFormat .. ")" or "";
			if is_set(ChapterFormat) and not is_set (ChapterURL) then			-- Test if |chapter-format= is given without giving a |chapter-url=
				ChapterFormat = ChapterFormat .. set_error( 'format_missing_url', {'chapter-format', 'chapter-url'} );
			end
			if 'map' == config.CitationClass and is_set (TitleType) then
				Chapter = Chapter .. ' (' .. TitleType .. ')';
			end
			Chapter = Chapter .. ChapterFormat .. sepc .. ' ';
		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","pressrelease","podcast", "newsgroup", "mailinglist"}) 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' );
		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 ) .. 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 );
		end
		Conference = sepc .. " " .. Conference
	elseif is_set(ConferenceURL) then
		Conference = sepc .. " " .. external_link( ConferenceURL, nil, ConferenceURLorigin );
	end
	
	if not is_set(Position) then
		local Minutes = A['Minutes'];
		if is_set(Minutes) then
			Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
		else
			local Time = A['Time'];
			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
	
	if not is_set(Page) then
		if is_set(Pages) then
			if is_set(Periodical) and
				not in_array(config.CitationClass, {"encyclopaedia","web","book","news","podcast"}) then
				Pages = ": " .. Pages;
			elseif tonumber(Pages) ~= nil then
				Pages = sepc .." " .. PPrefix .. Pages;
			else
				Pages = sepc .." " .. PPPrefix .. Pages;
			end
		end
	else
		if is_set(Periodical) and
			not in_array(config.CitationClass, {"encyclopaedia","web","book","news","podcast"}) then
			Page = ": " .. Page;
		else
			Page = sepc .." " .. PPrefix .. Page;
		end
	end
	
	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, this_page.namespace);			-- format, categories (article namespace only), 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 "";

-- 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 = " (" .. TitleType .. ")";	-- display it in parentheses
	end

	TitleNote = is_set(TitleNote) and (sepc .. " " .. TitleNote) or "";
	Edition = is_set(Edition) and (" " .. wrap_msg ('edition', Edition)) or "";
	Issue = is_set(Issue) and (" (" .. Issue .. ")") or "";
	Series = is_set(Series) and (sepc .. " " .. Series) or "";
	OrigYear = is_set(OrigYear) and (" [" .. OrigYear .. "]") or "";
	Agency = is_set(Agency) and (sepc .. " " .. Agency) or "";

	if is_set(Volume) then
		if ( mw.ustring.len(Volume) > 4 )
		  then Volume = sepc .." " .. Volume;
		  else Volume = " <b>" .. hyphen_to_dash(Volume) .. "</b>";
		end
	end

	------------------------------------ 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 in_array(SubscriptionRequired:lower(), {'yes', 'true', 'y'}) then
		SubscriptionRequired = sepc .. " " .. cfg.messages['subscription'];		-- subscription required message
	elseif in_array(RegistrationRequired:lower(), {'yes', 'true', 'y'}) 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} );

	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
			Quote = Quote:sub(2,-2);
		end
		Quote = sepc .." " .. wrap_style ('quoted-text', Quote ); 				-- wrap in <q>...</q> tags
		PostScript = "";														-- CS1 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 ), ArchiveDate } );
			if not is_set(OriginalURL) then
				Archived = Archived .. " " .. set_error('archive_missing_url');							   
			end
		elseif is_set(OriginalURL) then
			local arch_text = cfg.messages['archived-dead'];
			if sepc ~= "." then arch_text = arch_text:lower() end
			Archived = sepc .. " " .. substitute( arch_text,
				{ external_link( OriginalURL, cfg.messages['original'] ), ArchiveDate } );
		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
	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'] ) .. LaySource .. LayDate
		else
			Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary']:lower() ) .. LaySource .. LayDate
		end			
	else
		Lay = "";
	end
	
	if is_set(Transcript) then
		if is_set(TranscriptURL) then Transcript = external_link( TranscriptURL, Transcript ); end
	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
	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, Issue}, sepc );
		
	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, Issue}, sepc );
		else																	-- a sheet or stand-alone map
			tcommon = safe_join( {Title, TitleType, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher}, sepc );
		end
		
	else																		-- all other CS1 templates
		tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language, 
			Volume, Issue, 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 .. Page .. Pages .. At;
	
	if is_set(Authors) then
		if is_set(Coauthors) then
			local sep = '; ';
			if 'vanc' == NameListFormat then
				sep = ', ';
			end
			Authors = Authors .. sep .. Coauthors;
		end
		if is_set(Date) then
			Date = " ("..Date..")" .. OrigYear .. sepc .. " "
		elseif string.sub(Authors,-1,-1) == sepc then
			Authors = Authors .. " "
		else
			Authors = Authors .. sepc .. " "
		end
		if is_set(Editors) then
			local in_text = " ";
			local post_text = "";
			if is_set(Chapter) then
				in_text = in_text .. cfg.messages['in'] .. " "
			else
				if EditorCount <= 1 then
					post_text = ", " .. cfg.messages['editor'];
				else
					post_text = ", " .. cfg.messages['editors'];
				end
			end 
			if (sepc ~= '.') then in_text = in_text:lower() end
			Editors = in_text .. Editors .. post_text;
			if (string.sub(Editors,-1,-1) == sepc)
				then Editors = Editors .. " "
				else Editors = Editors .. sepc .. " "
			end
		end
		text = safe_join( {Authors, Date, Chapter, Place, Editors, tcommon }, sepc );
		text = safe_join( {text, pgtext, idcommon}, sepc );
	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
			Date = " (" .. Date ..")" .. OrigYear .. sepc .. " "
		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}, sepc );
		text = safe_join( {text, pgtext, idcommon}, sepc );
	else
		if is_set(Date) then
			if ( string.sub(tcommon,-1,-1) ~= sepc )
			  then Date = sepc .." " .. Date .. OrigYear
			  else Date = " " .. Date .. OrigYear
			end
		end
		if config.CitationClass=="journal" and is_set(Periodical) then
			text = safe_join( {Chapter, Place, tcommon}, sepc );
			text = safe_join( {text, pgtext, Date, idcommon}, sepc );
		else
			text = safe_join( {Chapter, Place, tcommon, Date}, sepc );
			text = safe_join( {text, 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 <span/> element
	local options = {};
	
	if is_set(config.CitationClass) and config.CitationClass ~= "citation" then
		options.class = "citation " .. config.CitationClass;
	else
		options.class = "citation";
	end
	
	if is_set(Ref) and Ref:lower() ~= "none" then
		local id = Ref
		if ( "harv" == Ref ) then
			local names = {} --table of last names & year
			if #a > 0 then
				for i,v in ipairs(a) do 
					names[i] = v.last 
					if i == 4 then break end
				end
			elseif #e > 0 then
				for i,v in ipairs(e) do 
					names[i] = v.last 
					if i == 4 then break end				
				end
			end
			names[ #names + 1 ] = first_set(Year, anchor_year);	-- Year first for legacy citations and for YMD dates that require disambiguation
			id = anchor_id(names)
		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 = '<span id="' .. mw.uri.anchorEncode(options.id) ..'" class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</span>";
	else
		text = '<span class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</span>";
	end		

	local empty_span = '<span style="display:none;">&nbsp;</span>';
	
	-- Note: Using display: none on then 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

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

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

	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 #suggestions == 0 then
						suggestions = mw.loadData( 'Module:Citation/CS1/Suggestions' );
					end
					if suggestions[ k:lower() ] ~= nil then
						error_text, error_state = set_error( 'parameter_ignored_suggest', {k, suggestions[ k:lower() ]}, true );
					else
						error_text, error_state = set_error( 'parameter_ignored', {k}, true );
					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	
	
	return citation0( config, args)
end

return z