Module:Citation

local z = { error_categories = {}; error_ids = {}; message_tail = {}; }

-- Whether variable is set or not function is_set( var ) return not (var == nil or var == ''); end

-- First set variable or nil if none function first_set(...) local list = {...}; for _, var in pairs(list) do		if is_set( var ) then return var; end end end

-- Whether needle is in haystack function inArray( 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

--day=, |month=, 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	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', {error_message}, true ) } );		-- add error message		table.insert( z.message_tail, { seterror( 'deprecated_params', {}, true ) } );		-- add error message	end end
 * 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. function substitute( msg, args ) --	return args and tostring( mw.message.newRawMessage( msg, args ) ) or msg; return args and mw.message.newRawMessage( msg, args ):plain or msg; end

--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) function kern_quotes (str) local left=' %1 ';		-- spacing to use when title contains leading single or double quote mark local right=' %1 ';		-- spacing to use when title contains trailing single or double quote mark if str:match ("^[\"\'][^\']") then		str = string.gsub( str, "^[\"\']", left, 1 );				-- replace (captured) leading single or double quote with left-side end if str:match ("[^\'][\"\']$") then		str = string.gsub( str, "[\"\']$", right, 1 );			-- replace (captured) trailing single or double quote with right-side end return str; end

-- Wraps a string using a message_list configuration taking one argument function wrap( key, str, lower ) if not is_set( str ) then return ""; elseif inArray( key, { 'italic-title', 'trans-italic-title' } ) then str = safeforitalics( str ); end if lower == true then return substitute( cfg.messages[key]:lower, {str} ); else return substitute( cfg.messages[key], {str} ); end 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. 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] = selectone( 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 ]] 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 ;				-- 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 ;				-- 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 comment for error trapping function errorcomment( content, hidden ) return wrap( hidden and 'hidden-error' or 'visible-error', content ); end

-- 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. function seterror( 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 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

-- Formats a wiki style external link function externallinkid(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]',		options.link, options.label, options.separator or " ",		options.prefix, url_string, options.suffix or "",		mw.text.nowiki(options.id)	); end

-- Formats a wiki style internal link function internallinkid(options) return mw.ustring.format( '%s%s%s',		options.link, options.label, options.separator or " ",		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( '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

-- Formats a link to Amazon function amazon(id, domain) if not is_set(domain) then domain = "com" elseif ( "jp" == domain or "uk" == domain ) then domain = "co." .. domain end local handler = cfg.id_handlers['ASIN']; return externallinkid({link = handler.link,		label=handler.label, prefix="//www.amazon."..domain.."/dp/",id=id,		encode=handler.encode, separator = handler.separator}) end

-- format and error check arXiv identifier. There are two valid forms of the identifier: the first form, valid only between date codes 9108 and 0703 is:	arXiv: . /   where:	 is a string of alpha characters - may be hyphenated; no other punctuation	 is a string of alpha characters - may be hyphenated; no other punctuation	 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	 is a three-digit number	 is a 1 or more digit number preceded with a lowercase v; no spaces (undocumented) the second form, valid from April 2007 is:	arXiv: .  where:	 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	 is a four-digit number	 is a 1 or more digit number preceded with a lowercase v; no spaces

function arxiv (id) local handler = cfg.id_handlers['ARXIV']; local year, month, version; local err_cat = "" year, month, version = id:match("^%a[%a%.%-]+/([90]%d)([01]%d)%d%d%d([v%d]*)$");				-- test for the 9108-0703 format if not year then		-- arXiv id is not proper 9108-0703 form year, month, version = id:match("^(%d%d)([01]%d)%.%d%d%d%d([v%d]*)$");	-- test for the 0704- format if not year then err_cat = ' ' .. seterror( 'bad_arxiv' );							-- arXiv id doesn't match either format else	-- id is the 0704- format year = tonumber(year); month = tonumber(month); if ((7 > year) or (1 > month and 12 < month)) or					-- is year invalid or is month invalid? (doesn't test for future years) ((7 == year) and (4 > month)) or								-- when year is 07, is month invalid (before April)? is_set (version) and nil == version:match("v%d+") then			-- is version proper format of single 'v' followed by digits? err_cat = ' ' .. seterror( 'bad_arxiv' );					-- set error message end end else	-- id is the 9108-0703 format; are the date values ok		year = tonumber(year); month = tonumber(month); if ((91 > year and 7 < year) or (1 > month and 12 < month)) or			-- if invalid year or invalid month ((91 == year and 8 > month) or (7 == year and 3 < month)) or 		-- if years ok, are starting and ending months ok? is_set (version) and nil == version:match("v%d+") then			-- is version proper format of single 'v' followed by digits? err_cat = ' ' .. seterror( 'bad_arxiv' );					-- set error message end end

return externallinkid({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. ]]

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 alpha length = 10 then lccn[1] and lccn[2] are both alpha or both digits length = 11 then lccn[1] is alpha, lccn[2] and lccn[3] are both alpha or both digits length = 12 then lccn[1] and lccn[2] are both 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 elseif 9 == len then								-- LCCN should be adddddddd if nil == id:match("%a%d%d%d%d%d%d%d%d") then			-- does it match our pattern? err_cat = ' ' .. seterror( '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("^%a%a%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 end end elseif 11 == len then								-- LCCN should be aaadddddddd or adddddddddd if not (id:match("^%a%a%a%d%d%d%d%d%d%d%d") or id:match("^%a%d%d%d%d%d%d%d%d%d%d")) then	-- see if it matches one of our patterns err_cat = ' ' .. seterror( 'bad_lccn' );	-- no match, set an error message end elseif 12 == len then								-- LCCN should be aadddddddddd if not id:match("^%a%a%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 end else 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

-- 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. 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 = ' ' .. seterror( '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 = ' ' .. seterror( 'bad_pmid' );	-- set an error message end end return externallinkid({link = handler.link, label = handler.label,			prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat; end

--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. 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. ]] 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 = ' ' .. seterror( '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 = ' ' .. seterror( 'bad_pmc' );		-- set an error message end end if is_embargoed(embargo) then text="" .. handler.label .. ":" .. handler.separator .. id .. err_cat;	--still embargoed so no external link else 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 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.

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.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 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:sub(-1,-1) local handler = cfg.id_handlers['OL']; if ( code == "A" ) then return externallinkid({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 externallinkid({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 externallinkid({link=handler.link, label=handler.label,			prefix= "http://openlibrary.org/works/OL",id=id, separator=handler.separator,			encode = handler.encode}) else return externallinkid({link=handler.link, label=handler.label,			prefix= "http://openlibrary.org/OL",id=id, separator=handler.separator,			encode = handler.encode}) .. ' ' .. seterror( 'bad_ol' ); end end

--[[ 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: 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. ]] 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 = externallinkid({link = handler.link, label = handler.label,		prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) if false == valid_issn then text = text .. ' ' .. seterror( 'bad_issn' )			-- add an error message if the issn is invalid end return text end

--type= ) 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). 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 "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 "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

--[[ 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. ]] 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 -- Similar to that used for Special:BookSources function cleanisbn( isbn_str ) return isbn_str:gsub( "[^-0-9X]", "" ); end

-- Extract page numbers from external wikilinks in any of the |page=, |pages=, or |at= parameters for use in COinS. --TODO: Fix so this code supports urls like this: --	http://www.history.navy.mil/download/va125153.pdf#page=13 %w/:\. function get_coins_pages (pages) 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 = pattern:gsub("([%^%$%(%)%%%.%[%]%*%+%-%?])", "%%%1");	-- 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 (– etc.) with hyphens; do we need to replace numerical entities like &#32; and the like? return pages; end

-- ISBN-10 and ISSN validator code calculates checksum across all isbn/issn digits including the check digit. ISBN-13 is checked in checkisbn. 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. 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

-- Determines whether an ISBN string is valid 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 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

-- Gets the display text for a wikilink like A|B or B gives B function removewikilink( str ) 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 function safeforurl( str ) if str:match( "%[%[.-%]%]" ) ~= nil then table.insert( z.message_tail, { seterror( 'wikilink_in_url', {}, true ) } ); end return str:gsub( '[%[%]\n]', {			['['] = '&#91;',		[']'] = '&#93;',		['\n'] = ' ' } ); end

-- Converts a hyphen to a dash function hyphentodash( str ) if not is_set(str) or str:match( "[%[%]{}<>]" ) ~= nil then return str; end return str:gsub( '-', '–' ); end

-- Protects a string that will be wrapped in wiki italic markup '' ... '' function safeforitalics( str ) -- Note: We cannot use  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,  and ''	tend to interact poorly under Mediawiki's HTML tidy. if not is_set(str) then return str; else if str:sub(1,1) == "'" then str = " " .. str; end if str:sub(-1,-1) == "'" then str = str .. " "; end -- Remove newlines as they break italics. return str:gsub( '\n', ' ' ); end end

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

TODO: safejoin has a flaw where it won't remove the duplicate character from a |title= / |url= combination. This is because by the time we get here, |title=http://somesite.com and |title=Document Title. have been combined: and Document Title. so that now, the last character is not sepc but is ] (unless sepc == ']' which breaks the external link) ]] function safejoin( 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 = ''; local comp = ''; local end_chr = ''; local trim; for _, value in ipairs( tbl ) do		if value == nil then value = ''; end if str == '' then str = value; elseif value ~= '' then if value:sub(1,1) == '<' then -- Special case of values enclosed in spans and other markup. comp = value:gsub( "%b<>", "" ); else comp = value; end if comp:sub(1,1) == duplicate_char then trim = false; end_chr = str:sub(-1,-1); -- str = str .. "<HERE(enchr=" .. end_chr.. ")" if end_chr == duplicate_char then str = str:sub(1,-2); elseif end_chr == "'" then if str:sub(-3,-1) == duplicate_char .. "''" then str = str:sub(1, -4) .. "''";					elseif str:sub(-5,-1) == duplicate_char .. "]]''" then trim = true; elseif str:sub(-4,-1) == duplicate_char .. "]''" then trim = true; end elseif end_chr == "]" then if str:sub(-3,-1) == duplicate_char .. "]]" then trim = true; elseif str:sub(-2,-1) == duplicate_char .. "]" then trim = true; end elseif end_chr == " " then if str:sub(-2,-1) == duplicate_char .. " " then str = str:sub(1,-3); end end

if trim then if value ~= comp then local dup2 = duplicate_char; if dup2:match( "%A" ) then dup2 = "%" .. dup2; end value = value:gsub( "(%b<>)" .. dup2, "%1", 1 ) else value = value:sub( 2, -1 ); end end end str = str .. value; end end return str; end

-- Attempts to convert names to initials. function reducetoinitials(first) local initials = {} local i = 0;										-- counter for number of initials for word in string.gmatch(first, "%S+") do 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

-- Formats a list of people (e.g. authors / editors) function listpeople(control, people) local sep = control.sep; local namesep = control.namesep local format = control.format local maximum = control.maximum local lastauthoramp = control.lastauthoramp; local text = {} local etal = false; 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 first = reducetoinitials(first) end one = one .. namesep .. first end if is_set(person.link) then one = "" .. one .. "" end if is_set(person.link) and nil ~= person.link:find("//") then one = one .. " " .. seterror( 'bad_authorlink' ) end	-- check for url 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 -- if necessary wrap result in tag to format in Small Caps if ( "scap" == format ) then result = ' ' .. result .. ' ';	end return result, count end

-- Generates a CITEREF anchor ID. function anchorid( options ) return "CITEREF" .. table.concat( options ); end

--[[ 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=. ]] --Original function function extractnames(args, list_name) local names = {}; local i = 1; local last; while true do       last = selectone( args, cfg.aliases[list_name .. '-Last'], 'redundant_parameters', i ); if not is_set(last) then -- just in case someone passed in an empty parameter break; end names[i] = { last = last, first = selectone( args, cfg.aliases[list_name .. '-First'], 'redundant_parameters', i ), link = selectone( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i ), mask = selectone( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i ) };       i = i + 1; end return names; end

--[[ Broken. Editor CITEREF IDs are broken by this code (no editor list). Author CITEREF ID render correctly function extractnames(args, list_name)	local names = {};			-- table of names	local i = 1;				-- loop counter/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

while true do		names[i] =				-- search through args for name components beginning at 1 {			last = selectone( args, cfg.aliases[list_name .. '-Last'], 'redundant_parameters', i ), first = selectone( args, cfg.aliases[list_name .. '-First'], 'redundant_parameters', i ), link = selectone( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i ), mask = selectone( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i ) };		if names[i].first and not names[i].last then							-- if there is a firstn without a matching lastn names[i].first = nil;												-- set first to nil so we don't confuse the implicit et al message code table.insert( z.message_tail, { seterror( 'first_missing_last', {err_msg_list_name, i}, true ) } );	-- add this error message break;																-- and done because lastn not found elseif not names[i].first and not names[i].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																	-- last with or without a first 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 count = 0;															-- reset the counter, we're looking for two consecutive missing names end i = i + 1;																-- bump to the next name end return names;																-- all done, return our list of names end ]]

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

-- Takes a table of IDs and turns it into a table of formatted ID outputs. function buildidlist( 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, externallinkid( handler ) } ); elseif handler.mode == 'internal' then table.insert( new_list, {handler.label, internallinkid( 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 = internallinkid( handler ); if not checkisbn( v ) and not is_set(options.IgnoreISBN) then ISBN = ISBN .. seterror( 'bad_isbn', {}, false, " ", "" ); end table.insert( new_list, {handler.label, ISBN } ); 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 -- Chooses one matching parameter from a list of parameters to consider -- Generates an error if more than one match is present. function selectone( 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( '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( 'parameter', selected ); table.insert( z.message_tail, { seterror( error_condition, {error_str}, true ) } ); end return value, selected; end

-- COinS metadata (see ) allows automated tools to parse -- the citation information. 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( removewikilink( 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.btitle"] = data.Chapter; OCinSoutput["rft.atitle"] = 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 = cleanisbn( 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

-- 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 	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 a = extractnames( args, 'AuthorList' );

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

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 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']; 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'); local ChapterURL = A['ChapterURL']; local ChapterURLorigin = A:ORIGIN('ChapterURL'); local ConferenceURL = A['ConferenceURL']; local ConferenceURLorigin = A:ORIGIN('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 = hyphentodash( 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 Ref = A['Ref']; 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 ); --id= for a usenet article or post id	-- |id= is not included in COinS so here we convert it to an ID that will be included in COinS	if ('newsgroup' == config.CitationClass) and (is_set (ID)) then		ID_list['USENETID']=ID;			-- add this new 'id' to the list of IDs		ID = '';						-- and unset	end local Quote = A['Quote']; local PostScript = A['PostScript'];

local LayURL = A['LayURL']; local LaySource = A['LaySource']; local Transcript = A['Transcript']; local TranscriptURL = A['TranscriptURL'] local TranscriptURLorigin = A:ORIGIN('TranscriptURL'); local sepc = A['Separator'];

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 Cointerviewers = A['Cointerviewers'];			-- deprecated local Interviewer = A['Interviewer'];				-- deprecated local Program = A['Program'];

--local variables that are not cs1 parameters local page_type;									-- is this needed? Doesn't appear to be used anywhere; local use_lowercase = ( sepc ~= '.' ); 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 postscript default. if not is_set (PostScript) then						-- if |postscript= has not been set (Postscript is nil which is the default for ) and if (config.CitationClass ~= "citation") then	-- this template is not a citation template PostScript = '.';							-- must be a cite xxx template so set postscript to default (period) end else if PostScript:lower == 'none' then			-- if |postscript=none then PostScript = '';							-- no postscript end end

--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 for k, v in pairs( cfg.uncategorized_namespaces ) do	-- otherwise, spin through the list of namespaces we don't include in error categories if this_page.nsText == v then				-- if we find one no_tracking_cats = "true";				-- set no_tracking_cats break;									-- and we're done end 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 .. " " .. 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 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

All other combinations of |encyclopedia, |title, and |article are not modified ]]	if ( config.CitationClass == "encyclopaedia" ) then 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; Title = Periodical; Periodical = '';				-- redundant so unset TransTitle = '';				-- 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 cases for citation. if (config.CitationClass == "citation") then		-- for citation templates if not is_set (Ref) then						-- if |ref= is not set Ref = "harv";								-- set default |ref=harv end if not is_set (sepc) then						-- if |separator= is not set sepc = ',';									-- set citation separator to its default (comma) end else												-- not a citation template if not is_set (sepc) then						-- if |separator= has not been set sepc = '.';									-- set cite xxx separator to its default (period) end end

-- check for special case where |separator=none if 'none' == sepc:lower then						-- if |separator=none sepc = '';										-- then set it to an empty string 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 .. " " .. seterror('redundant_parameters', ' and  '); 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(Interviewer) then if is_set(TitleType) then Others = ' ' .. TitleType .. ' with ' .. Interviewer; TitleType = ''; else Others = ' ' .. 'Interview with ' .. Interviewer; end if is_set(Cointerviewers) then Others = Others .. sepc .. ' ' .. Cointerviewers; end else Others = '(Interview)'; end end

--Account for the oddity that is 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, before generation of COinS data. --TODO: if this is only for, shouldn't we be checking? (if config.CitationClass=='conference' then ...) if is_set(BookTitle) then Chapter = Title; ChapterLink = TitleLink; TransChapter = TransTitle; Title = BookTitle; TitleLink = ''; TransTitle = ''; end

-- Account for the oddity that is, before generation of COinS data. --	-- 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  stuff

-- legacy: promote concatenation of |day=, |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; local Day = A['Day'] if is_set(Day) then Date = Day .. " " .. Date 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

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/Date_validation ]]	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(error_message) then table.insert( z.message_tail, { seterror( 'bad_date', {error_message}, true ) } );	-- add this error message end

-- At this point fields may be nil if they weren't specified in the template use. We can use that fact.

-- COinS metadata (see ) for -- automated parsing of citation information. local OCinSoutput = COinS{ ['Periodical'] = Periodical, ['Chapter'] = Chapter, ['Title'] = Title, ['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, };

if is_set(Periodical) and not is_set(Chapter) and is_set(Title) then Chapter = Title; ChapterLink = TitleLink; TransChapter = TransTitle; Title = ''; TitleLink = ''; TransTitle = ''; end -- Hide unfinished cite newsgroup code so that long delayed update can take place -- special case for cite newsgroup. Do this after COinS because we are modifying Publishername and ID	if 'newsgroup' == config.CitationClass then		if is_set (PublisherName) then			PublisherName = '[Newsgroup]: ' ..  externallink( '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'] ); -- Preserve old-style implicit et al.		if not is_set(Maximum) and #a == 9 then Maximum = 8; table.insert( z.message_tail, { seterror('implict_etal_author', {}, true ) } ); elseif not is_set(Maximum) then Maximum = #a + 1; end local control = { sep = A["AuthorSeparator"] .. " ",			namesep = (first_set(A["AuthorNameSeparator"], A["NameSeparator"]) or "") .. " ",			format = A["AuthorFormat"], maximum = Maximum, lastauthoramp = LastAuthorAmp };		-- 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 = listpeople(control, a) 	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, { seterror('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, { seterror('implict_etal_editor', {}, true) } ); elseif not is_set(Maximum) then Maximum = #e + 1; end

local control = { sep = A["EditorSeparator"] .. " ",			namesep = (first_set(A["EditorNameSeparator"], A["NameSeparator"]) or "") .. " ",			format = A['EditorFormat'], maximum = Maximum, lastauthoramp = LastAuthorAmp };

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

local Cartography = ""; local Scale = ""; if config.CitationClass == "map" then if not is_set( Authors ) and is_set( PublisherName ) then Authors = PublisherName; PublisherName = ""; end Cartography = A['Cartography']; if is_set( Cartography ) then Cartography = sepc .. " " .. wrap( 'cartography', Cartography, use_lowercase ); end Scale = A['Scale']; if is_set( Scale ) then Scale = sepc .. " " .. Scale; end end if not is_set(URL) and not is_set(ChapterURL) and not is_set(ArchiveURL) and not is_set(ConferenceURL) and not is_set(TranscriptURL) then -- Test if cite web or cite podcast |url= is missing or empty if inArray(config.CitationClass, {"web","podcast"}) then table.insert( z.message_tail, { seterror( 'cite_web_url', {}, true ) } ); end -- Test if accessdate is given without giving a URL if is_set(AccessDate) then 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' ); end end -- Test if citation has no title if not is_set(Chapter) and not is_set(Title) and not is_set(Periodical) and not is_set(Conference) and not is_set(TransTitle) and not is_set(TransChapter) then table.insert( z.message_tail, { seterror( 'citation_missing_title', {}, true ) } ); end Format = is_set(Format) and " (" .. Format .. ")" or ""; local OriginalURL = URL DeadURL = DeadURL:lower; if is_set( ArchiveURL ) then if ( DeadURL ~= "no" ) then URL = ArchiveURL URLorigin = A:ORIGIN('ArchiveURL') end end -- Format chapter / article title if is_set(Chapter) and is_set(ChapterLink) then Chapter = "" .. Chapter .. ""; end if is_set(Periodical) and is_set(Title) then Chapter = wrap( 'italic-title', Chapter ); TransChapter = wrap( 'trans-italic-title', TransChapter ); else Chapter = kern_quotes (Chapter);				-- if necessary, separate chapter title's leading and trailing quote marks from Module provided quote marks Chapter = wrap( 'quoted-title', Chapter ); TransChapter = wrap( 'trans-quoted-title', TransChapter ); end local TransError = "" if is_set(TransChapter) then if not is_set(Chapter) then TransError = " " .. seterror( 'trans_missing_chapter' ); else TransChapter = " " .. TransChapter; end end Chapter = Chapter .. TransChapter; if is_set(Chapter) then if not is_set(ChapterLink) then if is_set(ChapterURL) then Chapter = externallink( ChapterURL, Chapter ) .. TransError; if not is_set(URL) then Chapter = Chapter .. Format; Format = ""; end elseif is_set(URL) then Chapter = externallink( URL, Chapter ) .. TransError .. Format; URL = ""; Format = ""; else Chapter = Chapter .. TransError; end elseif is_set(ChapterURL) then Chapter = Chapter .. " " .. externallink( ChapterURL, nil, ChapterURLorigin ) .. TransError; else Chapter = Chapter .. TransError; end Chapter = Chapter .. sepc .. " " -- with end-space elseif is_set(ChapterURL) then Chapter = " " .. externallink( ChapterURL, nil, ChapterURLorigin ) .. sepc .. " ";	end -- Format main title. if is_set(TitleLink) and is_set(Title) then Title = "" .. Title .. "" end if is_set(Periodical) then Title = kern_quotes (Title);				-- if necessary, separate title's leading and trailing quote marks from Module provided quote marks Title = wrap( 'quoted-title', Title ); TransTitle = wrap( 'trans-quoted-title', TransTitle ); -- Hide unfinished cite newsgroup code so that long delayed update can take place	elseif inArray(config.CitationClass, {"web","news","pressrelease","conference","podcast","newsgroup"}) and 	elseif inArray(config.CitationClass, {"web","news","pressrelease","conference","podcast"}) and not is_set(Chapter) then Title = kern_quotes (Title);				-- if necessary, separate title's leading and trailing quote marks from Module provided quote marks Title = wrap( 'quoted-title', Title ); TransTitle = wrap( 'trans-quoted-title', TransTitle ); else Title = wrap( 'italic-title', Title ); TransTitle = wrap( 'trans-italic-title', TransTitle ); end TransError = ""; if is_set(TransTitle) then if not is_set(Title) then TransError = " " .. seterror( 'trans_missing_title' ); else TransTitle = " " .. TransTitle; end end Title = Title .. TransTitle; if is_set(Title) then if not is_set(TitleLink) and is_set(URL) then Title = externallink( URL, Title ) .. TransError .. Format URL = ""; Format = ""; else Title = Title .. TransError; end end if is_set(Place) then Place = " " .. wrap( 'written', Place, use_lowercase ) .. sepc .. " ";	end if is_set(Conference) then if is_set(ConferenceURL) then Conference = externallink( ConferenceURL, Conference ); end Conference = sepc .. " " .. Conference elseif is_set(ConferenceURL) then Conference = sepc .. " " .. externallink( 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 inArray(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 inArray(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 Inset = A['Inset']; if first_set( Pages, Page, At ) ~= nil or sepc ~= '.' then if is_set( Section ) then Section = ", " .. wrap( 'section', Section, true ); end if is_set( Inset ) then Inset = ", " .. wrap( 'inset', Inset, true ); end else if is_set( Section ) then Section = sepc .. " " .. wrap( 'section', Section, use_lowercase ); if is_set( Inset ) then Inset = ", " .. wrap( 'inset', Inset, true ); end elseif is_set( Inset ) then Inset = sepc .. " " .. wrap( 'inset', Inset, use_lowercase ); end end At = At .. Section .. Inset; end

--Look in the list of iso639-1 language codes to see if the value provided in the language parameter matches one of them. If a match is found, 	use that value; if not, then use the value that was provided with the language parameter.	Categories are assigned in a manner similar to the  templates - categorizes only mainspace citations and only when the language code is not 'en' (English). if is_set (Language) then --		local name = mw.language.fetchLanguageName( Language:lower, "en" );	-- experiment: this seems to return correct ISO 639-1 language names local name = cfg.iso639_1[Language:lower];		-- get the language name if Language parameter has a valid iso 639-1 code if nil == name then Language=" " .. wrap( 'language', Language );	-- no match, use parameter's value else if 0 == this_page.namespace and 'en' ~= Language:lower then	--found a match; is this page main / article space and English not the language? Language=" " .. wrap( 'language', name .. '' );	-- in main space and not English: categorize else Language=" " .. wrap( 'language', name );	--not in mainspace or language is English so don't categorize end end 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 inArray(config.CitationClass, {"AV-media-notes", "DVD-notes", "podcast", "pressrelease", "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( '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 = " '''" .. hyphentodash(Volume) .. "'''";		end end

-- This code commented out while discussion continues until after week of 2014-03-23 live module update;	if is_set(Volume) then		if ( mw.ustring.len(Volume) > 4 )		 then Volume = sepc .. " " .. Volume;		  else			  Volume = " " .. hyphentodash(Volume) .. "";			  if is_set(Series) then Volume = sepc .. Volume;			  end		end	end totally unrelated data -- Loosely mimic template; Via parameter identifies a delivery source that is not the publisher; these sources often, but not always, exist	behind a registration or paywall.  So here, we've chosen to decouple via from subscription (via has never been part of the registration required template).	Subscription implies paywall; Registration does not.  If both are used in a citation, the subscription required link note is displayed. There are no error messages for this condition. if is_set(Via) then Via = " " .. wrap( 'via', Via ); end

if is_set(SubscriptionRequired) then SubscriptionRequired = sepc .. " " .. cfg.messages['subscription']; --here when 'via' parameter not used but 'subscription' is	elseif is_set(RegistrationRequired) then SubscriptionRequired = sepc .. " " .. cfg.messages['registration']; --here when 'via' and 'subscription' parameters not used but 'registration' is	end

if is_set(AccessDate) then local retrv_text = " " .. cfg.messages['retrieved'] if (sepc ~= ".") then retrv_text = retrv_text:lower end AccessDate = ' ' .. sepc .. substitute( retrv_text, {AccessDate} ) .. ' '	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

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

if is_set(URL) then URL = " " .. externallink( 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( 'quoted-text', Quote ); 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 = seterror('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'],				{ 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 local arch_text = cfg.messages['archived-missing']; if sepc ~= "." then arch_text = arch_text:lower end Archived = sepc .. " " .. substitute( arch_text, 				{ seterror('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 = " – ''" .. safeforitalics(LaySource) .. "''";		else LaySource = ""; end if sepc == '.' then Lay = sepc .. " " .. externallink( LayURL, cfg.messages['lay summary'] ) .. LaySource .. LayDate else Lay = sepc .. " " .. externallink( LayURL, cfg.messages['lay summary']:lower ) .. LaySource .. LayDate end else Lay = ""; end if is_set(Transcript) then if is_set(TranscriptURL) then Transcript = externallink( TranscriptURL, Transcript ); end elseif is_set(TranscriptURL) then Transcript = externallink( TranscriptURL, nil, TranscriptURLorigin ); end local Publisher; if is_set(Periodical) and not inArray(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( 'published', PublicationDate ); else Publisher = PublicationDate; end end if is_set(Publisher) then Publisher = " (" .. Publisher .. ")"; end else if is_set(PublicationDate) then PublicationDate = " (" .. wrap( '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( 'italic-title', Periodical ) else Periodical = wrap( 'italic-title', Periodical ) end end

--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 inArray(config.CitationClass, {"journal","citation"}) and is_set(Periodical) then 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 if #ID_list > 0 then ID_list = safejoin( { sepc .. " ", table.concat( ID_list, sepc .. " " ), ID }, sepc ); else ID_list = ID; 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 Authors = Authors .. A['AuthorSeparator'] .. " " .. 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 = safejoin( {Authors, Date, Chapter, Place, Editors, tcommon }, sepc ); text = safejoin( {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 = safejoin( {Editors, Date, Chapter, Place, tcommon}, sepc ); text = safejoin( {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 = safejoin( {Chapter, Place, tcommon}, sepc ); text = safejoin( {text, pgtext, Date, idcommon}, sepc ); else text = safejoin( {Chapter, Place, tcommon, Date}, sepc ); text = safejoin( {text, pgtext, idcommon}, sepc ); end end if is_set(PostScript) and PostScript ~= sepc then text = safejoin( {text, sepc}, sepc ); --Deals with italics, spaces, etc.		text = text:sub(1,-sepc:len-1); --		text = text:sub(1,-2);	--Remove final separator (assumes that sepc is only one character) end text = safejoin( {text, PostScript}, sepc );

-- Now enclose the whole thing in a 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 id = anchorid(names) end options.id = id; end if string.len(text:gsub("/]*>.- ", ""):gsub("%b<>","")) <= 2 then z.error_categories = {}; text = seterror('empty_citation'); z.message_tail = {}; end if is_set(options.id) then text = '' .. text .. " ";	else text = '' .. text .. " ";	end

local empty_span = ' '; -- Note: Using display: none on then COinS span breaks some clients. local OCinS = ' ' .. empty_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 .. '';		end end return text end

-- This is used by templates such as 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 use sandbox version? cfg = mw.loadData( 'Module:Citation/Configuration/sandbox' );	-- load sandbox versions of Configuration and Whitelist and ... whitelist = mw.loadData( 'Module:Citation/Whitelist/sandbox' ); dates = require('Module:Citation/Date_validation/sandbox').dates	-- ... sandbox version of date validation code else																	-- otherwise cfg = mw.loadData( 'Module:Citation/Configuration' );			-- load live versions of Configuration and Whitelist and ... whitelist = mw.loadData( 'Module:Citation/Whitelist' ); dates = require('Module:Citation/Date_validation').dates		-- ... live version of date validation code end 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 = seterror( 'text_ignored', {v}, true ); end elseif validate( k:lower ) then error_text, error_state = seterror( 'parameter_ignored_suggest', {k, k:lower}, true ); else if #suggestions == 0 then suggestions = mw.loadData( 'Module:Citation/Suggestions' ); end if suggestions[ k:lower ] ~= nil then error_text, error_state = seterror( 'parameter_ignored_suggest', {k, suggestions[ k:lower ]}, true ); else error_text, error_state = seterror( '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