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Module:Citation/CS1: Difference between revisions

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Module:Citation/CS1 (edit)

Revision as of 11:39, 9 November 2013

12,109 bytes added ,  11 years ago
Synch from sandbox; Migrate cite thesis and cite techreport; ISBN & ISSN tweaks; Deprecated parameter tracking; Add date validation;
m>Trappist the monk
(ISSN error detection; Expand uncategorized namespaces; Reg/Sub required msg tweak; Trap coauthors without authors; Hide error messages;)
m>Trappist the monk
(Synch from sandbox; Migrate cite thesis and cite techreport; ISBN & ISSN tweaks; Deprecated parameter tracking; Add date validation;)
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-- Include translation message hooks, ID and error handling configuration settings.
-- Include translation message hooks, ID and error handling configuration settings.
local cfg = mw.loadData( 'Module:Citation/CS1/Configuration' );
local cfg = mw.loadData( 'Module:Citation/CS1/Configuration/sandbox' );


-- Contains a list of all recognized parameters
-- Contains a list of all recognized parameters
local whitelist = mw.loadData( 'Module:Citation/CS1/Whitelist' );
local whitelist = mw.loadData( 'Module:Citation/CS1/Whitelist/sandbox' );


-- Whether variable is set or not
-- Whether variable is set or not
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     end
     end
     return false;
     return false;
end
-- Add this page to the deprecated parameter tracking category
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.error_categories, "Pages containing cite templates with deprecated parameters" ); -- add page to category
end
end
end


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]]
]]
function issn(id)
function issn(id)
local clean_issn;
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'];
local temp = 0;
local text;
local text;
local valid_issn = true;
local valid_issn = true;


id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and ndashes from the issn
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and ndashes from the issn
clean_issn=string.sub( id, 1, 4 ) .. "-" .. string.sub( id, 5 ); -- make a copy with a hyphen after 4 digits; use this version for display if issn validates


if 8 ~= id:len() or nil == id:match( "^%d*X?$" ) then -- validate the issn: 8 didgits long, containing only 0-9 or X in the last position
if 8 ~= id:len() or nil == id:match( "^%d*X?$" ) then -- validate the issn: 8 didgits long, containing only 0-9 or X in the last position
valid_issn=false; -- wrong length or improper character
valid_issn=false; -- wrong length or improper character
else
else
id = { id:byte(1, 8) }; -- table of individual bytes
valid_issn=is_valid_isxn(id, 8); -- validate issn
for i, v in ipairs( id ) do -- loop through all of the byte an calculate the checksum
if v == string.byte( "X" ) then -- if checkdigit is X
temp = temp + 10*( 9 - i ); -- it represents 10 decimal
else
temp = temp + tonumber( string.char(v) )*(9-i);
end
end
valid_issn = temp % 11 == 0; -- checksum must be zero for valid issn
end
end


if true == valid_issn then
if true == valid_issn then
id = clean_issn; -- if valid, use the cleaned-up version for the display
id = string.sub( id, 1, 4 ) .. "-" .. string.sub( id, 5 ); -- if valid, display correctly formatted version
else
else
id = issn_copy; -- if not valid, use the show the invalid issn with error message
id = issn_copy; -- if not valid, use the show the invalid issn with error message
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end
end


-- returns a number according to the month in a date 1 for January, etc.  If not a valid month, returns 0
function get_month_number (month)
local long_months = {['january']=1, ['february']=2, ['march']=3, ['april']=4, ['may']=5, ['june']=6, ['july']=7, ['august']=8, ['september']=9, ['october']=10, ['november']=11, ['december']=12};
local short_months = {['jan']=1, ['feb']=2, ['mar']=3, ['apr']=4, ['may']=5, ['jun']=6, ['jul']=7, ['aug']=8, ['sep']=9, ['oct']=10, ['nov']=11, ['dec']=12};
local temp;
temp=long_months[month:lower()];
if temp then return temp; end -- if month is the long-form name
temp=short_months[month:lower()];
if temp then return temp; end -- if month is the short-form name
return 0; -- misspelled or not a month name
end
-- returns true if date has one of the five seasons.  Else false.
function is_valid_season (season)
if inArray( season, {'winter', 'spring', 'summer', 'fall', 'autumn'} ) then
return true;
end
return false;
end


--[[
--[[
Determines whether an URL string is valid
Returns true if day is less than or equal to the number of days in month; else returns false.


At present the only check is whether the string appears to  
Assumes Julian calendar prior to year 1582 and Gregorian calendar thereafter. Accounts for Julian calendar leap years before 1582 and Gregorian leap years after 1582.
be prefixed with a URI scheme. It is not determined whether
Where the two calendars overlap (1582 to approximately 1923) dates are assumed to be Gregorian.
the URI scheme is valid or whether the URL is otherwise well
formed.
]]
]]
function checkurl( url_str )
function is_valid_date (year, month, day)
    -- Protocol-relative or URL scheme
local days_in_month = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    return url_str:sub(1,2) == "//" or url_str:match( "^[^/]*:" ) ~= nil;
local month_length;
if (2==month) then -- if February
month_length = 28; -- then 28 days unless
if 1582 > tonumber(year) then -- Julian calendar
if 0==(year%4) then
month_length = 29;
end
else -- Gregorian calendar
if (0==(year%4) and (0~=(year%100) or 0==(year%400))) then -- date specifies a leap year
month_length = 29; -- if leap year then 29 days in February
end
end
else
month_length=days_in_month[month];
end
 
if tonumber (day) > month_length then
return false;
end
return true;
end
end


-- Removes irrelevant text and dashes from ISBN number
--Check a pair of months or seasons to see if both are valid members of a month or season pair.
-- Similar to that used for Special:BookSources
 
function cleanisbn( isbn_str )
function is_valid_month_season_range(range_start, range_end)
    return isbn_str:gsub( "[^-0-9X]", "" );
if 0 == get_month_number (range_start:lower()) then -- is this a month range?
if true == is_valid_season (range_start:lower()) then -- not a month range, is this a season range?
return is_valid_season (range_end:lower()); -- range_start is season; return true if range_end also a season; else false
end
return false; -- range_start is not a month or a season
end
if 0 == get_month_number (range_end:lower()) then -- range_start is a month; is range_end also a  month?
return false; -- not a month range
end
return true;
end
end


-- Determines whether an ISBN string is valid
function checkisbn( isbn_str )
    isbn_str = cleanisbn( isbn_str ):gsub( "-", "" );
    local len = isbn_str:len();
    if len ~= 10 and len ~= 13 then
        return false;
    end
    local temp = 0;
    if len == 10 then
        if isbn_str:match( "^%d*X?$" ) == nil then return false; end
        isbn_str = { isbn_str:byte(1, len) };
        for i, v in ipairs( isbn_str ) do
            if v == string.byte( "X" ) then
                temp = temp + 10*( 11 - i );
            else
                temp = temp + tonumber( string.char(v) )*(11-i);
            end
        end
        return temp % 11 == 0;
    else
        if isbn_str:match( "^%d*$" ) == nil then return false; end
        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 )
Check date format to see that it is one of the formats approved by MOS:DATE: MMMM D, YYYY; D MMMM YYYY; MMMM YYYY; YYYY-MM-DD; YYYY.
    return (str:gsub( "%[%[([^%[%]]*)%]%]", function(l)
Additionally, check the date to see that it is a real date: no 31 in 30-day months; no 29 February when not a leap year.  Months, both long-form and three
        return l:gsub( "^[^|]*|(.*)$", "%1" ):gsub("^%s*(.-)%s*$", "%1");
character abbreviations, and seasons must be spelled correctly.
    end));
 
end
If the date fails the fomat tests, this function returns false but does not return values for anchor_year and COinS_date.  When this happens, the date parameter is
used in the COinS metadata and the CITEREF identifier gets its year from the year parameter if present.
 
Inputs:
date_string - date string from date-holding parameters (date, year, accessdate, embargo, archivedate, etc)
 
Returns:
false if date string is not a real date; else
true, anchor_year, COinS_date
anchor_year can be used in CITEREF anchors
COinS_date is date_string without anchor_year disambiguators if any
]]
function check_date (date_string)
local year;
local month;
local day;
local anchor_year;
local coins_date;
 
if date_string:match("^%d%d%d%d%-%d%d%-%d%d$") then -- Year-initial numerical year month day format
coins_date = date_string:match("%d%d%d%d%-%d%d%-%d%d");
year, month, day=string.match(date_string, "(%d%d%d%d)%-(%d%d)%-(%d%d)");
anchor_year = year;
month=tonumber(month);
if 12 < month or 1 > month then return false; end
 
elseif date_string:match("^%a+%s*%d%d*%s*,%s*%d%d%d%d%a?$") then -- month-initial: month day, year
coins_date = date_string:match("%a+%s*%d%d*%s*,%s*%d%d%d%d");
month, day, anchor_year, year=string.match(date_string, "(%a+)%s*(%d%d*)%s*,%s*((%d%d%d%d)%a?)");
month = get_month_number (month:lower());
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
elseif date_string:match("^%d%d*%s*%a+%s*%d%d%d%d%a?$") then -- date-initial: day month year
coins_date = date_string:match("%d%d*%s*%a+%s*%d%d%d%d");
day, month, anchor_year, year=string.match(date_string, "(%d%d*)%s*(%a+)%s*((%d%d%d%d)%a?)");
month = get_month_number (month:lower());
if 0 == month then return false; end -- return false if month text isn't one of the twelve months
 
elseif mw.ustring.match (date_string, "^%a+%s*[%s%-/–]%s*%a+%s*%d%d%d%d%a?$") then -- month/season range year
local month2
coins_date = mw.ustring.match (date_string, "%a+%s*[%s%-/–]%s*%a+%s*%d%d%d%d");
coins_date= mw.ustring.gsub( coins_date, "–", "-" ); -- replace ndash with hyphen
month, month2, anchor_year, year=mw.ustring.match (date_string, "(%a+)%s*[%s%-/–]%s*(%a+)%s*((%d%d%d%d)%a?)");
day=0; -- mark day as not used
if false == is_valid_month_season_range(month, month2) then
return false;
end
elseif date_string:match("^%a+%s*%d%d%d%d%a?$") then -- month/season year
coins_date = date_string:match("%a+%s*%d%d%d%d");
month, anchor_year, year=string.match(date_string, "(%a+)%s*((%d%d%d%d)%a?)");
day=0; -- mark day as not used
local season=month; -- copy
month = get_month_number (month:lower());
if month == 0 then -- if month text isn't one of the twelve months, might be a season
if false == is_valid_season (season:lower()) then
return false; -- return false not a month or one of the five seasons
end
end
 
elseif date_string:match("^%d%d%d%d?%a?$") then -- year; here accept either YYY or YYYY
coins_date = date_string:match("^%d%d%d%d?");
anchor_year, year=string.match(date_string, "((%d%d%d%d?)%a?)");
month, day = 0, 0; -- mark day and month as not used
else
return false; -- date format not one of the MOS:DATE approved formats
end


-- Escape sequences for content that will be used for URL descriptions
if 0~=month and 0~=day then -- check year month day dates for validity
function safeforurl( str )
if false==is_valid_date(year,month,day) then
    if str:match( "%[%[.-%]%]" ) ~= nil then  
return false; -- date string is not a real date return false; unset anchor_year and coins_date
        table.insert( z.message_tail, { seterror( 'wikilink_in_url', {}, true ) } );
end
    end
end
   
    return str:gsub( '[%[%]\n]', {   
return true, anchor_year, coins_date; -- format is good and date string represents a real date
        ['['] = '&#91;',
end
        [']'] = '&#93;',
 
        ['\n'] = ' ' } );
--[[
end
Cycle the date-holding parameters in passed table date_parameters_list through check_date() to check compliance with MOS:DATE. For all valid dates, check_date() returns
true and values for anchor_year (used in CITEREF identifiers) and COinS_date (used in the COinS metadata).  The |date= parameter test is unique.  This function only
accepts anchor_year and COinS_date results from the |date= parameter test and |date= is the only date-holding parameter that is allowed to contain the no-date keywords
"n.d." or "nd" (without quotes).
 
Unlike most error messages created in this module, only one error message is created by this function. Because all of the date holding parameters are processed serially,
a single error message is created as the dates are tested.
]]
 
function dates(date_parameters_list)
local anchor_year; -- will return as nil if the date being tested is not |date=
local COinS_date; -- will return as nil if the date being tested is not |date=
local error_message ="";
local good_date=false;
for k, v in pairs(date_parameters_list) do -- for each date-holding parameter in the list
if is_set(v) then -- if the parameter has a value
if v:match("^c%.%s%d%d%d%d?%a?$") then -- special case for c. year or with or without CITEREF disambiguator - only |date= and |year=
if 'date'==k then
good_date, anchor_year, COinS_date = true, v:match("((c%.%s%d%d%d%d?)%a?)"); -- anchor year and COinS_date only from |date= parameter
elseif 'year'==k then
good_date =  true;
end
elseif 'year'==k then -- if the parameter is |year= (but not c. year)
if v:match("^%d%d%d%d?%a?$") then -- year with or without CITEREF disambiguator
good_date =  true;
end
elseif 'date'==k then -- if the parameter is |date=
if v:match("n%.d%.%a?") then -- if |date=n.d. with or without a CITEREF disambiguator
good_date, anchor_year, COinS_date = true, v:match("((n%.d%.)%a?)"); --"n.d."; -- no error when date parameter is set to no date
elseif v:match("nd%a?$") then -- if |date=nd with or without a CITEREF disambiguator
good_date, anchor_year, COinS_date = true, v:match("((nd)%a?)"); --"nd"; -- no error when date parameter is set to no date
else
good_date, anchor_year, COinS_date = check_date (v); -- go test the date
end
else -- any other date-holding parameter
good_date = check_date (v); -- go test the date
end
if false==good_date then -- assemble one error message so we don't add the tracking category multiple times
if is_set(error_message) then -- once we've added the first portion of the error message ...
error_message=error_message .. ", "; -- ... add a comma space separator
end
error_message=error_message .. "&#124;" .. k .. "="; -- add the failed parameter
end
end
end
if is_set(error_message) then
table.insert( z.message_tail, { seterror( 'bad_date', {error_message}, true ) } ); -- add this error message
end


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


-- Protects a string that will be wrapped in wiki italic markup '' ... ''
--[[
function safeforitalics( str )
Determines whether an URL string is valid
    --[[ Note: We can not use <i> for italics, as the expected behavior for
 
    italics specified by ''...'' in the title is that they will be inverted
At present the only check is whether the string appears to
    (i.e. unitalicized) in the resulting references.  In addition, <i> and ''
be prefixed with a URI scheme. It is not determined whether
    tend to interact poorly under Mediawiki's HTML tidy. ]]
the URI scheme is valid or whether the URL is otherwise well
   
formed.
    if not is_set(str) then
]]
        return str;
function checkurl( url_str )
     else
    -- Protocol-relative or URL scheme
        if str:sub(1,1) == "'" then str = "<span />" .. str; end
     return url_str:sub(1,2) == "//" or url_str:match( "^[^/]*:" ) ~= nil;
        if str:sub(-1,-1) == "'" then str = str .. "<span />"; end
       
        -- Remove newlines as they break italics.
        return str:gsub( '\n', ' ' );
    end
end
end


--[[
-- Removes irrelevant text and dashes from ISBN number
Joins a sequence of strings together while checking for duplicate separation
-- Similar to that used for Special:BookSources
characters.
function cleanisbn( isbn_str )
]]
    return isbn_str:gsub( "[^-0-9X]", "" );
function safejoin( tbl, duplicate_char )
end
    --[[
 
    Note: we use string functions here, rather than ustring functions.
--[[
   
ISBN-10 and ISSN validator code calculates checksum across all isbn/issn digits including the check digit. If the number is valid the result will be 0.
    This has considerably faster performance and should work correctly as
Before calling this function, issbn/issn must be checked for length and stripped of dashes, spaces and other non-isxn characters.
    long as the duplicate_char is strict ASCII. The strings
]]
    in tbl may be ASCII or UTF8.
function is_valid_isxn (isxn_str, len)
    ]]
local temp = 0;
   
isxn_str = { isxn_str:byte(1, len) }; -- make a table of bytes
    local str = '';
len = len+1; -- adjust to be a loop counter
    local comp = '';
for i, v in ipairs( isxn_str ) do -- loop through all of the byte an calculate the checksum
    local end_chr = '';
if v == string.byte( "X" ) then -- if checkdigit is X
    local trim;
temp = temp + 10*( len - i ); -- it represents 10 decimal
    for _, value in ipairs( tbl ) do
else
        if value == nil then value = ''; end
temp = temp + tonumber( string.char(v) )*(len-i);
       
end
        if str == '' then
end
            str = value;
return temp % 11 == 0; -- returns true if calculation result is zero
        elseif value ~= '' then
end
            if value:sub(1,1) == '<' then
 
                -- Special case of values enclosed in spans and other markup.
-- Determines whether an ISBN string is valid
                comp = value:gsub( "%b<>", "" );
function checkisbn( isbn_str )
            else
    isbn_str = cleanisbn( isbn_str ):gsub( "-", "" );
                comp = value;
    local len = isbn_str:len();
            end
           
    if len ~= 10 and len ~= 13 then
            if comp:sub(1,1) == duplicate_char then
        return false;
                trim = false;
    end
                end_chr = str:sub(-1,-1);
                -- str = str .. "<HERE(enchr=" .. end_chr.. ")"
    if len == 10 then
                if end_chr == duplicate_char then
        if isbn_str:match( "^%d*X?$" ) == nil then return false; end
                    str = str:sub(1,-2);
return is_valid_isxn(isbn_str, 10);
                elseif end_chr == "'" then
    else
                    if str:sub(-3,-1) == duplicate_char .. "''" then
    local temp = 0;
                        str = str:sub(1, -4) .. "''";
        if isbn_str:match( "^97[89]%d*$" ) == nil then return false; end -- isbn13 begins with 978 or 979
                    elseif str:sub(-5,-1) == duplicate_char .. "]]''" then
        isbn_str = { isbn_str:byte(1, len) };
                        trim = true;
        for i, v in ipairs( isbn_str ) do
                    elseif str:sub(-4,-1) == duplicate_char .. "]''" then
            temp = temp + (3 - 2*(i % 2)) * tonumber( string.char(v) );
                        trim = true;
        end
                    end
        return temp % 10 == 0;
                elseif end_chr == "]" then
    end
                    if str:sub(-3,-1) == duplicate_char .. "]]" then
end
                        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
-- Gets the display text for a wikilink like [[A|B]] or [[B]] gives B
                    if value ~= comp then
function removewikilink( str )
                        local dup2 = duplicate_char;
    return (str:gsub( "%[%[([^%[%]]*)%]%]", function(l)
                        if dup2:match( "%A" ) then dup2 = "%" .. dup2; end
        return l:gsub( "^[^|]*|(.*)$", "%1" ):gsub("^%s*(.-)%s*$", "%1");
                       
    end));
                        value = value:gsub( "(%b<>)" .. dup2, "%1", 1 )
end
                    else
 
                        value = value:sub( 2, -1 );
-- Escape sequences for content that will be used for URL descriptions
                    end
function safeforurl( str )
                end
    if str:match( "%[%[.-%]%]" ) ~= nil then
            end
        table.insert( z.message_tail, { seterror( 'wikilink_in_url', {}, true ) } );
            str = str .. value;
        end
     end
     end
     return str;
   
end 
     return str:gsub( '[%[%]\n]', {   
 
        ['['] = '&#91;',
--[[
        [']'] = '&#93;',
Return the year portion of a date string, if possible. 
        ['\n'] = ' ' } );
Returns empty string if the argument can not be interpreted
end
as a year.
 
]]
-- Converts a hyphen to a dash
function selectyear( str )
function hyphentodash( str )
    -- Is the input a simple number?
     if not is_set(str) or str:match( "[%[%]{}<>]" ) ~= nil then
    local num = tonumber( str );
     if num ~= nil and num > 0 and num < 2100 and num == math.floor(num) then
         return str;
         return str;
     else
     end   
        -- Use formatDate to interpret more complicated formats
    return str:gsub( '-', '–' );
        local lang = mw.getContentLanguage();
        local good, result;
        good, result = pcall( lang.formatDate, lang, 'Y', str );
        if good then
            return result;
        else
            -- extract year if the date uses seasons
            str=string.lower (str);
            local seasons={"winter", "spring", "summer", "fall", "autumn"};
            local date_string_split=mw.text.split (str, "[%s%-/–]");      -- split date string into parts; white space, hyphen, forward slash, and ndash are allowed separators
            local has_season=false;
           
            for n,season_value in ipairs(seasons) do                -- for each season ...
                for n,split_value in ipairs(date_string_split) do  -- ... loop through date string values
                    if split_value == season_value then            -- does the split value match the season value?
                        if has_season==false then                  -- found one. if this one is the first we've found ...
                            has_season=true;                        -- ... remember that we found a season
                        end
                    elseif has_season==true then                    -- if split_value isn't a season, and we've previously found a season ...
                        num = tonumber( split_value );              -- ... convert current split value to a number if we can
                        if num ~= nil and num > 0 and num < 2100 and num == math.floor(num) then    -- if it's a suitable number
                            return tostring( num );                                                 -- return it as a string
                        end -- if num
                    end -- if string.find
                end -- for split value loop
            end -- season value loop
        end -- if good
    end -- if num
end -- selectyear
 
-- Attempts to convert names to initials.
function reducetoinitials(first)
    local initials = {}
    for word in string.gmatch(first, "%S+") do
        table.insert(initials, string.sub(word,1,1)) -- Vancouver format does not include full stops.
    end
    return table.concat(initials) -- Vancouver format does not include spaces.
end
end


-- Formats a list of people (e.g. authors / editors)
-- Protects a string that will be wrapped in wiki italic markup '' ... ''
function listpeople(control, people)
function safeforitalics( str )
     local sep = control.sep;
     --[[ Note: We can not use <i> for italics, as the expected behavior for
     local namesep = control.namesep
     italics specified by ''...'' in the title is that they will be inverted
     local format = control.format
     (i.e. unitalicized) in the resulting references. In addition, <i> and ''
    local maximum = control.maximum
     tend to interact poorly under Mediawiki's HTML tidy. ]]
     local lastauthoramp = control.lastauthoramp;
    local text = {}
    local etal = false;
      
      
     if sep:sub(-1,-1) ~= " " then sep = sep .. " " end
     if not is_set(str) then
    if maximum ~= nil and maximum < 1 then return "", 0; end
        return str;
      
     else
    for i,person in ipairs(people) do
         if str:sub(1,1) == "'" then str = "<span />" .. str; end
         if is_set(person.last) then
        if str:sub(-1,-1) == "'" then str = str .. "<span />"; end
            local mask = person.mask
       
            local one
        -- Remove newlines as they break italics.
            local sep_one = sep;
        return str:gsub( '\n', ' ' );
            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 = "[[" .. person.link .. "|" .. one .. "]]" end
            end
            table.insert( text, one )
            table.insert( text, sep_one )
        end
     end
     end
end


    local count = #text / 2;
--[[
    if count > 0 then
Joins a sequence of strings together while checking for duplicate separation
        if count > 1 and is_set(lastauthoramp) and not etal then
characters.
            text[#text-2] = " & ";
]]
        end
function safejoin( tbl, duplicate_char )
        text[#text] = nil;
    --[[
     end
     Note: we use string functions here, rather than ustring functions.
      
      
     local result = table.concat(text) -- construct list
     This has considerably faster performance and should work correctly as
     if etal then
     long as the duplicate_char is strict ASCII. The strings
        local etal_text = cfg.messages['et al'];
    in tbl may be ASCII or UTF8.
        result = result .. " " .. etal_text;
     ]]
     end
      
      
     -- if necessary wrap result in <span> tag to format in Small Caps
     local str = '';
    if ( "scap" == format ) then result =  
    local comp = '';
         '<span class="smallcaps" style="font-variant:small-caps">' .. result .. '</span>';
    local end_chr = '';
    end
    local trim;
    return result, count
    for _, value in ipairs( tbl ) do
end
        if value == nil then value = ''; end
 
          
-- Generates a CITEREF anchor ID.
        if str == '' then
function anchorid( options )
            str = value;
    return "CITEREF" .. table.concat( options );
        elseif value ~= '' then
end
            if value:sub(1,1) == '<' then
 
                -- Special case of values enclosed in spans and other markup.
-- Gets name list from the input arguments
                comp = value:gsub( "%b<>", "" );
function extractnames(args, list_name)
            else
    local names = {};
                comp = value;
    local i = 1;
            end
    local last;
           
   
            if comp:sub(1,1) == duplicate_char then
    while true do
                trim = false;
        last = selectone( args, cfg.aliases[list_name .. '-Last'], 'redundant_parameters', i );
                end_chr = str:sub(-1,-1);
        if not is_set(last) then
                -- str = str .. "<HERE(enchr=" .. end_chr.. ")"
            -- just in case someone passed in an empty parameter
                if end_chr == duplicate_char then
            break;
                    str = str:sub(1,-2);
        end
                elseif end_chr == "'" then
        names[i] = {
                    if str:sub(-3,-1) == duplicate_char .. "''" then
            last = last,
                        str = str:sub(1, -4) .. "''";
            first = selectone( args, cfg.aliases[list_name .. '-First'], 'redundant_parameters', i ),
                    elseif str:sub(-5,-1) == duplicate_char .. "]]''" then
            link = selectone( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i ),
                        trim = true;
            mask = selectone( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i )
                    elseif str:sub(-4,-1) == duplicate_char .. "]''" then
        };
                        trim = true;
        i = i + 1;
                    end
    end
                elseif end_chr == "]" then
    return names;
                    if str:sub(-3,-1) == duplicate_char .. "]]" then
end
                        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


-- Populates ID table from arguments using configuration settings
                if trim then
function extractids( args )
                    if value ~= comp then
    local id_list = {};
                        local dup2 = duplicate_char;
    for k, v in pairs( cfg.id_handlers ) do   
                        if dup2:match( "%A" ) then dup2 = "%" .. dup2; end
        v = selectone( args, v.parameters, 'redundant_parameters' );
                       
        if is_set(v) then id_list[k] = v; end
                        value = value:gsub( "(%b<>)" .. dup2, "%1", 1 )
                    else
                        value = value:sub( 2, -1 );
                    end
                end
            end
            str = str .. value;
        end
     end
     end
     return id_list;
     return str;
end 
 
--[[
Return the year portion of a date string, if possible. 
Returns empty string if the argument can not be interpreted
as a year.
 
BUG: If editors set |date=n.d or |date=n.da then selectyear() returns the current year for use in CITEREF.  These "dates" are caught by dates().
]]
function selectyear( str )
-- Is the input a simple number?
local num = tonumber( str );
if num ~= nil and num > 0 and num < 2100 and num == math.floor(num) then
return str;
else
-- Use formatDate to interpret more complicated formats
local lang = mw.getContentLanguage();
local good, result;
good, result = pcall( lang.formatDate, lang, 'Y', str );
if good then return result; end -- if good
end
end
end


-- Takes a table of IDs and turns it into a table of formatted ID outputs.
-- Attempts to convert names to initials.
function buildidlist( id_list, options )
function reducetoinitials(first)
     local new_list, handler = {};
    local initials = {}
      
    for word in string.gmatch(first, "%S+") do
     function fallback(k) return { __index = function(t,i) return cfg.id_handlers[k][i] end } end;
        table.insert(initials, string.sub(word,1,1)) -- Vancouver format does not include full stops.
    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 k, v in pairs( id_list ) do
     for i,person in ipairs(people) do
         -- fallback to read-only cfg
         if is_set(person.last) then
        handler = setmetatable( { ['id'] = v }, fallback(k) );
             local mask = person.mask
       
            local one
        if handler.mode == 'external' then
             local sep_one = sep;
             table.insert( new_list, {handler.label, externallinkid( handler ) } );
            if maximum ~= nil and i > maximum then
        elseif handler.mode == 'internal' then
                etal = true;
             table.insert( new_list, {handler.label, internallinkid( handler ) } );
                break;
        elseif handler.mode ~= 'manual' then
            elseif (mask ~= nil) then
            error( cfg.messages['unknown_ID_mode'] );
                local n = tonumber(mask)
        elseif k == 'DOI' then
                if (n ~= nil) then
            table.insert( new_list, {handler.label, doi( v, options.DoiBroken ) } );
                    one = string.rep("&mdash;",n)
        elseif k == 'ASIN' then
                else
            table.insert( new_list, {handler.label, amazon( v, options.ASINTLD ) } );  
                    one = mask;
        elseif k == 'OL' then
                    sep_one = " ";
             table.insert( new_list, {handler.label, openlibrary( v ) } );
                end
        elseif k == 'PMC' then
             else
            table.insert( new_list, {handler.label, pmc( v, options.Embargo ) } );
                one = person.last
        elseif k == 'ISSN' then
                local first = person.first
        table.insert( new_list, {handler.label, issn( v ) } );
                if is_set(first) then
        elseif k == 'ISBN' then
                    if ( "vanc" == format ) then first = reducetoinitials(first) end
            local ISBN = internallinkid( handler );
                    one = one .. namesep .. first
            if not checkisbn( v ) and not is_set(options.IgnoreISBN) then
                end
                ISBN = ISBN .. seterror( 'bad_isbn', {}, false, " ", "" );
                if is_set(person.link) then one = "[[" .. person.link .. "|" .. one .. "]]" end
             end
             end
             table.insert( new_list, {handler.label, ISBN } );              
             table.insert( text, one )
         else
            table.insert( text, sep_one )
             error( cfg.messages['unknown_manual_ID'] );
        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
         end
        text[#text] = nil;
     end
     end
      
      
     function comp( a, b )
     local result = table.concat(text) -- construct list
         return a[1] < b[1];
    if etal then
         local etal_text = cfg.messages['et al'];
        result = result .. " " .. etal_text;
     end
     end
      
      
     table.sort( new_list, comp );
     -- if necessary wrap result in <span> tag to format in Small Caps
     for k, v in ipairs( new_list ) do
     if ( "scap" == format ) then result =
         new_list[k] = v[2];
         '<span class="smallcaps" style="font-variant:small-caps">' .. result .. '</span>';
     end
     end  
      
     return result, count
     return new_list;
end
 
-- Generates a CITEREF anchor ID.
function anchorid( options )
     return "CITEREF" .. table.concat( options );
end
end
 
 
-- Chooses one matching parameter from a list of parameters to consider
-- Gets name list from the input arguments
-- Generates an error if more than one match is present.
function extractnames(args, list_name)
function selectone( args, possible, error_condition, index )
     local names = {};
     local value = nil;
     local i = 1;
     local selected = '';
     local last;
     local error_list = {};
      
      
     if index ~= nil then index = tostring(index); end
     while true do
   
         last = selectone( args, cfg.aliases[list_name .. '-Last'], 'redundant_parameters', i );
    -- Handle special case of "#" replaced by empty string
         if not is_set(last) then
    if index == '1' then
             -- just in case someone passed in an empty parameter
         for _, v in ipairs( possible ) do
             break;
            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
        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
     end
      
     return names;
     if #error_list > 0 then
end
        local error_str = "";
 
        for _, k in ipairs( error_list ) do
-- Populates ID table from arguments using configuration settings
            if error_str ~= "" then error_str = error_str .. cfg.messages['parameter-separator'] end
function extractids( args )
            error_str = error_str .. wrap( 'parameter', k );
     local id_list = {};
        end
    for k, v in pairs( cfg.id_handlers ) do  
         if #error_list > 1 then
        v = selectone( args, v.parameters, 'redundant_parameters' );
            error_str = error_str .. cfg.messages['parameter-final-separator'];
         if is_set(v) then id_list[k] = v; end
        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
     end
   
     return id_list;
     return value, selected;
end
end


-- COinS metadata (see <http://ocoins.info/>) allows automated tools to parse
-- Takes a table of IDs and turns it into a table of formatted ID outputs.
-- the citation information.
function buildidlist( id_list, options )
function COinS(data)
     local new_list, handler = {};
     if 'table' ~= type(data) or nil == next(data) then
        return '';
    end
      
      
     local ctx_ver = "Z39.88-2004";
     function fallback(k) return { __index = function(t,i) return cfg.id_handlers[k][i] end } end;
      
      
     -- treat table strictly as an array with only set values.
     for k, v in pairs( id_list ) do
    local OCinSoutput = setmetatable( {}, {
        -- fallback to read-only cfg
         __newindex = function(self, key, value)
        handler = setmetatable( { ['id'] = v }, fallback(k) );
             if is_set(value) then
       
                rawset( self, #self+1, table.concat{ key, '=', mw.uri.encode( removewikilink( value ) ) } );
        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 == 'ASIN' then
            table.insert( new_list, {handler.label, amazon( v, options.ASINTLD ) } );
        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 == '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
             end
            table.insert( new_list, {handler.label, ISBN } );               
        else
            error( cfg.messages['unknown_manual_ID'] );
         end
         end
     });
     end
      
      
     if is_set(data.Chapter) then
     function comp( a, b )
         OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
         return a[1] < b[1];
        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
     end
      
      
     OCinSoutput["rft.place"] = data.PublicationPlace;
     table.sort( new_list, comp );
     OCinSoutput["rft.date"] = data.Date;
     for k, v in ipairs( new_list ) do
    OCinSoutput["rft.series"] = data.Series;
        new_list[k] = v[2];
    OCinSoutput["rft.volume"] = data.Volume;
     end
     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
     return new_list;
        local id, value = cfg.id_handlers[k].COinS;
end
        if k == 'ISBN' then value = cleanisbn( v ); else value = v; end
 
        if string.sub( id or "", 1, 4 ) == 'info' then
-- Chooses one matching parameter from a list of parameters to consider
            OCinSoutput["rft_id"] = table.concat{ id, "/", v };
-- Generates an error if more than one match is present.
        else
function selectone( args, possible, error_condition, index )
            OCinSoutput[ id ] = value;
    local value = nil;
        end
    local selected = '';
    end
    local error_list = {};
   
    if index ~= nil then index = tostring(index); end
      
      
     local last, first;
     -- Handle special case of "#" replaced by empty string
     for k, v in ipairs( data.Authors ) do
     if index == '1' then
        last, first = v.last, v.first;
        for _, v in ipairs( possible ) do
        if k == 1 then
            v = v:gsub( "#", "" );
            if is_set(last) then
            if is_set(args[v]) then
                 OCinSoutput["rft.aulast"] = last;
                if value ~= nil and selected ~= v then
                    table.insert( error_list, v );
                 else
                    value = args[v];
                    selected = v;
                end
             end
             end
            if is_set(first) then
         end      
                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
     end
      
      
     OCinSoutput.rft_id = data.URL;
     for _, v in ipairs( possible ) do
    OCinSoutput.rfr_id = table.concat{ "info:sid/", mw.site.server:match( "[^/]*$" ), ":", data.RawPage };
        if index ~= nil then
    OCinSoutput = setmetatable( OCinSoutput, nil );
            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
      
      
    -- sort with version string always first, and combine.
     return value, selected;
    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
This is the main function foing the majority of the citation
-- the citation information.
formatting.
function COinS(data)
]]
     if 'table' ~= type(data) or nil == next(data) then
function citation0( config, args)
        return '';
     --[[
     end
    Load Input Parameters
      
    The argment_wrapper facillitates the mapping of multiple
     local ctx_ver = "Z39.88-2004";
    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
     -- treat table strictly as an array with only set values.
    -- define different field names for the same underlying things.   
     local OCinSoutput = setmetatable( {}, {
     local Authors = A['Authors'];
        __newindex = function(self, key, value)
    local a = extractnames( args, 'AuthorList' );
            if is_set(value) then
 
                rawset( self, #self+1, table.concat{ key, '=', mw.uri.encode( removewikilink( value ) ) } );
    local Coauthors = A['Coauthors'];
            end
     local Others = A['Others'];
        end
     local Editors = A['Editors'];
     });
     local e = extractnames( args, 'EditorList' );
      
 
     if is_set(data.Chapter) then
    local Year = A['Year'];
        OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
    local PublicationDate = A['PublicationDate'];
        OCinSoutput["rft.genre"] = "bookitem";
    local OrigYear = A['OrigYear'];
        OCinSoutput["rft.btitle"] = data.Chapter;
    local Date = A['Date'];
        OCinSoutput["rft.atitle"] = data.Title;
    local LayDate = A['LayDate'];
     elseif is_set(data.Periodical) then
    ------------------------------------------------- Get title data
        OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:journal";
    local Title = A['Title'];
        OCinSoutput["rft.genre"] = "article";
    local BookTitle = A['BookTitle'];
        OCinSoutput["rft.jtitle"] = data.Periodical;
    local Conference = A['Conference'];
        OCinSoutput["rft.atitle"] = data.Title;
     local TransTitle = A['TransTitle'];
     else
    local TitleNote = A['TitleNote'];
        OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
    local TitleLink = A['TitleLink'];
        OCinSoutput["rft.genre"] = "book"
    local Chapter = A['Chapter'];
        OCinSoutput["rft.btitle"] = data.Title;
    local ChapterLink = A['ChapterLink'];
     end
    local TransChapter = A['TransChapter'];
    local TitleType = A['TitleType'];
    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'];
      
      
     if ( config.CitationClass == "encyclopaedia" ) then
     OCinSoutput["rft.place"] = data.PublicationPlace;
         if not is_set(Chapter) then
    OCinSoutput["rft.date"] = data.Date;
             if not is_set(Title) then
    OCinSoutput["rft.series"] = data.Series;
                 Title = Periodical;
    OCinSoutput["rft.volume"] = data.Volume;
                 Periodical = '';
    OCinSoutput["rft.issue"] = data.Issue;
             else
    OCinSoutput["rft.pages"] = data.Pages;
                Chapter = Title
    OCinSoutput["rft.edition"] = data.Edition;
                TransChapter = TransTitle
    OCinSoutput["rft.pub"] = data.PublisherName;
                Title = '';
   
                TransTitle = '';
    for k, v in pairs( data.ID_list ) do
            end
        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
     end
     end
    local Series = A['Series'];
    local Volume = A['Volume'];
    local Issue = A['Issue'];
    local Position = '';
    local Page, Pages, At, page_type;
      
      
     Page = A['Page'];
     OCinSoutput.rft_id = data.URL;
     Pages = hyphentodash( A['Pages'] );
     OCinSoutput.rfr_id = table.concat{ "info:sid/", mw.site.server:match( "[^/]*$" ), ":", data.RawPage };
     At = A['At'];
     OCinSoutput = setmetatable( OCinSoutput, nil );
      
      
     if is_set(Page) then
     -- sort with version string always first, and combine.
        if is_set(Pages) or is_set(At) then
    table.sort( OCinSoutput );
            Page = Page .. " " .. seterror('extra_pages');
    table.insert( OCinSoutput, 1, "ctx_ver=" .. ctx_ver );  -- such as "Z39.88-2004"
            Pages = '';
    return table.concat(OCinSoutput, "&");
            At = '';
end
        end
 
    elseif is_set(Pages) then
--[[
        if is_set(At) then
This is the main function foing the majority of the citation
            Pages = Pages .. " " .. seterror('extra_pages');
formatting.
            At = '';
]]
        end
function citation0( config, args)
    end   
    --[[
      
    Load Input Parameters
     local Edition = A['Edition'];
    The argment_wrapper facillitates the mapping of multiple
     local PublicationPlace = A['PublicationPlace']
    aliases to single internal variable.
     local Place = A['Place'];
    ]]
    local A = argument_wrapper( args );
 
     local i
     local PPrefix = A['PPrefix']
     local PPPrefix = A['PPPrefix']
     if is_set( A['NoPP'] ) then PPPrefix = "" PPrefix = "" end
      
      
     if not is_set(PublicationPlace) and is_set(Place) then
     -- Pick out the relevant fields from the arguments.  Different citation templates
        PublicationPlace = Place;
     -- define different field names for the same underlying things.   
    end
     local Authors = A['Authors'];
   
     local a = extractnames( args, 'AuthorList' );
    if PublicationPlace == Place then Place = ''; end
 
      
     local Coauthors = A['Coauthors'];
     local PublisherName = A['PublisherName'];
     local Others = A['Others'];
     local RegistrationRequired = A['RegistrationRequired'];
     local Editors = A['Editors'];
    local SubscriptionRequired = A['SubscriptionRequired'];
     local e = extractnames( args, 'EditorList' );
     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 );
     local Year = A['Year'];
      
    local PublicationDate = A['PublicationDate'];
     local Quote = A['Quote'];
    local OrigYear = A['OrigYear'];
     local PostScript = A['PostScript'];
    local Date = A['Date'];
     local LayURL = A['LayURL'];
    local LayDate = A['LayDate'];
     local LaySource = A['LaySource'];
    ------------------------------------------------- Get title data
     local Transcript = A['Transcript'];
    local Title = A['Title'];
     local TranscriptURL = A['TranscriptURL']  
     local BookTitle = A['BookTitle'];
     local TranscriptURLorigin = A:ORIGIN('TranscriptURL');
     local Conference = A['Conference'];
     local sepc = A['Separator'];
     local TransTitle = A['TransTitle'];
     local LastAuthorAmp = A['LastAuthorAmp'];
     local TitleNote = A['TitleNote'];
     local no_tracking_cats = A['NoTracking'];
     local TitleLink = A['TitleLink'];
 
     local Chapter = A['Chapter'];
     local use_lowercase = ( sepc ~= '.' );
     local ChapterLink = A['ChapterLink'];
     local this_page = mw.title.getCurrentTitle(); --Also used for COinS and for language
     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'];
      
      
     if not is_set(no_tracking_cats) then
     if ( config.CitationClass == "encyclopaedia" ) then
        for k, v in pairs( cfg.uncategorized_namespaces ) do
        if not is_set(Chapter) then
             if this_page.nsText == v then
            if not is_set(Title) then
                 no_tracking_cats = "true";
                Title = Periodical;
                 break;
                Periodical = '';
             else
                Chapter = Title
                TransChapter = TransTitle
                 Title = '';
                 TransTitle = '';
             end
             end
         end
         end
     end
     end


     -- At this point fields may be nil if they weren't specified in the template use.  We can use that fact.
     local Series = A['Series'];
    local Volume = A['Volume'];
    local Issue = A['Issue'];
    local Position = '';
    local Page, Pages, At, page_type;
   
    Page = A['Page'];
    Pages = hyphentodash( A['Pages'] );
    At = A['At'];
      
      
    -- Account for the oddity that is {{cite conference}}, before generation of COinS data.
     if is_set(Page) then
     if is_set(BookTitle) then
         if is_set(Pages) or is_set(At) then
         Chapter = Title;
            Page = Page .. " " .. seterror('extra_pages');
        ChapterLink = TitleLink;
            Pages = '';
        TransChapter = TransTitle;
            At = '';
        Title = BookTitle;
        end
        TitleLink = '';
     elseif is_set(Pages) then
        TransTitle = '';
        if is_set(At) then
    end
            Pages = Pages .. " " .. seterror('extra_pages');
     -- Account for the oddity that is {{cite episode}}, before generation of COinS data.
            At = '';
    if config.CitationClass == "episode" then
         end
        local AirDate = A['AirDate'];
    end   
        local SeriesLink = A['SeriesLink'];
   
         local Season = A['Season'];
    local Edition = A['Edition'];
        local SeriesNumber = A['SeriesNumber'];
    local PublicationPlace = A['PublicationPlace']
        local Network = A['Network'];
    local Place = A['Place'];
        local Station = A['Station'];
   
        local s, n = {}, {};
    if not is_set(PublicationPlace) and is_set(Place) then
        local Sep = (first_set(A["SeriesSeparator"], A["Separator"]) or "") .. " ";
         PublicationPlace = Place;
       
        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
      
      
     -- COinS metadata (see <http://ocoins.info/>) for
     if PublicationPlace == Place then Place = ''; end
     -- automated parsing of citation information.
   
     local OCinSoutput = COinS{
    local PublisherName = A['PublisherName'];
        ['Periodical'] = Periodical,
    local RegistrationRequired = A['RegistrationRequired'];
        ['Chapter'] = Chapter,
     local SubscriptionRequired = A['SubscriptionRequired'];
        ['Title'] = Title,
     local Via = A['Via'];
        ['PublicationPlace'] = PublicationPlace,
    local AccessDate = A['AccessDate'];
        ['Date'] = first_set(Date, Year, PublicationDate),
    local ArchiveDate = A['ArchiveDate'];
        ['Series'] = Series,
    local Agency = A['Agency'];
        ['Volume'] = Volume,
    local DeadURL = A['DeadURL']
        ['Issue'] = Issue,
    local Language = A['Language'];
        ['Pages'] = first_set(Page, Pages, At),
    local Format = A['Format'];
        ['Edition'] = Edition,
    local Ref = A['Ref'];
        ['PublisherName'] = PublisherName,
   
        ['URL'] = first_set( URL, ChapterURL ),
    local DoiBroken = A['DoiBroken'];
        ['Authors'] = a,
        ['ID_list'] = ID_list,
-- Special case for cite techreport.
        ['RawPage'] = this_page.prefixedText,
local ID = A['ID'];
    };
if (config.CitationClass == "techreport") then -- special case for cite techreport
if is_set(Issue) then -- cite techreport uses 'number', which everything else aliases 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', '<code>&#124;id=</code> and <code>&#124;number=</code>');
end
end
end
    local ASINTLD = A['ASINTLD'];
    local IgnoreISBN = A['IgnoreISBN'];
    local Embargo = A['Embargo'];
 
    local ID_list = extractids( args );
   
    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'];


     if is_set(Periodical) and not is_set(Chapter) and is_set(Title) then
     local use_lowercase = ( sepc ~= '.' );
        Chapter = Title;
    local this_page = mw.title.getCurrentTitle();  --Also used for COinS and for language
         ChapterLink = TitleLink;
   
        TransChapter = TransTitle;
    if not is_set(no_tracking_cats) then
        Title = '';
        for k, v in pairs( cfg.uncategorized_namespaces ) do
        TitleLink = '';
            if this_page.nsText == v then
        TransTitle = '';
                no_tracking_cats = "true";
    end
                break;
            end
         end
    end
 
local anchor_year; -- used in the CITEREF identifier
local COinS_date; -- used in the COinS metadata
 
-- Go test all of the date-holding parameters for valid MOS:DATE format and make sure that dates are real dates.
-- TODO: 2013-10-27: AirDate is nil when dates() is called because it hasn't been set yet.  Move the call to dates() or set AirDate earlier.
anchor_year, COinS_date = dates({['accessdate']=AccessDate, ['airdate']=AirDate, ['archivedate']=ArchiveDate, ['date']=Date, ['doi_brokendate']=DoiBroken,
['embargo']=Embargo, ['laydate']=LayDate, ['publicationdate']=PublicationDate, ['year']=Year});
 
if not is_set(Year) then -- prevent Year from being set from DateIn  TODO: eliminate the need for this?
if is_set(anchor_year) then
Year = anchor_year;
end
end


    -- Now perform various field substitutions.
-- At this point fields may be nil if they weren't specified in the template use.  We can use that fact.
     -- We also add leading spaces and surrounding markup and punctuation to the
      
     -- various parts of the citation, but only when they are non-nil.
     -- Account for the oddity that is {{cite conference}}, before generation of COinS data.
     if not is_set(Authors) then
     if is_set(BookTitle) then
         local Maximum = tonumber( A['DisplayAuthors'] );
         Chapter = Title;
          
         ChapterLink = TitleLink;
        -- Preserve old-style implicit et al.
         TransChapter = TransTitle;
        if not is_set(Maximum) and #a == 9 then
         Title = BookTitle;
            Maximum = 8;
         TitleLink = '';
            table.insert( z.message_tail, { seterror('implict_etal_author', {}, true ) } );
        TransTitle = '';
         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
     end
 
    -- Account for the oddity that is {{cite episode}}, before generation of COinS data.
if not is_set(Authors) and is_set(Coauthors) then -- coauthors aren't displayed if one of authors=, authorn=, or lastn= isn't specified
     if config.CitationClass == "episode" then
table.insert( z.message_tail, { seterror('coauthors_missing_author', {}, true) } ); -- emit error message
         local AirDate = A['AirDate'];
end
         local SeriesLink = A['SeriesLink'];
 
         local Season = A['Season'];
    local EditorCount
        local SeriesNumber = A['SeriesNumber'];
     if not is_set(Editors) then
        local Network = A['Network'];
         local Maximum = tonumber( A['DisplayEditors'] );
        local Station = A['Station'];
         -- Preserve old-style implicit et al.
        local s, n = {}, {};
         if not is_set(Maximum) and #e == 4 then
         local Sep = (first_set(A["SeriesSeparator"], A["Separator"]) or "") .. " ";
            Maximum = 3;
          
            table.insert( z.message_tail, { seterror('implict_etal_editor', {}, true) } );
         if is_set(Issue) then table.insert(s, cfg.messages["episode"] .. " " .. Issue); Issue = ''; end
         elseif not is_set(Maximum) then
        if is_set(Season) then table.insert(s, cfg.messages["season"] .. " " .. Season); end
            Maximum = #e + 1;
        if is_set(SeriesNumber) then table.insert(s, cfg.messages["series"] .. " " .. SeriesNumber); end
         end
        if is_set(Network) then table.insert(n, Network); end
 
        if is_set(Station) then table.insert(n, Station); end
         local control = {
       
            sep = A["EditorSeparator"] .. " ",
        Date = Date or AirDate;
            namesep = (first_set(A["EditorNameSeparator"], A["NameSeparator"]) or "") .. " ",
        Chapter = Title;
            format = A['EditorFormat'],
        ChapterLink = TitleLink;
            maximum = Maximum,
        TransChapter = TransTitle;
            lastauthoramp = LastAuthorAmp
        Title = Series;
         };
        TitleLink = SeriesLink;
 
         TransTitle = '';
         Editors, EditorCount = listpeople(control, e);
       
    else
         Series = table.concat(s, Sep);
         EditorCount = 1;
         ID = table.concat(n, Sep);
     end
     end
 
   
     local Cartography = "";
     -- COinS metadata (see <http://ocoins.info/>) for
     local Scale = "";
     -- automated parsing of citation information.
     if config.CitationClass == "map" then
     local OCinSoutput = COinS{
         if not is_set( Authors ) and is_set( PublisherName ) then
         ['Periodical'] = Periodical,
            Authors = PublisherName;
        ['Chapter'] = Chapter,
            PublisherName = "";
         ['Title'] = Title,
         end
         ['PublicationPlace'] = PublicationPlace,
         Cartography = A['Cartography'];
         ['Date'] = first_set(COinS_date, Date, Year, PublicationDate),
         if is_set( Cartography ) then
        ['Series'] = Series,
            Cartography = sepc .. " " .. wrap( 'cartography', Cartography, use_lowercase );
         ['Volume'] = Volume,
         end       
         ['Issue'] = Issue,
         Scale = A['Scale'];
         ['Pages'] = first_set(Page, Pages, At),
         if is_set( Scale ) then
        ['Edition'] = Edition,
            Scale = sepc .. " " .. Scale;
         ['PublisherName'] = PublisherName,
         end       
        ['URL'] = first_set( URL, ChapterURL ),
    end
         ['Authors'] = a,
   
         ['ID_list'] = ID_list,
    if not is_set(Date) then
        ['RawPage'] = this_page.prefixedText,
         Date = Year;
     };
         if is_set(Date) then
 
            local Month = A['Month'];
     if is_set(Periodical) and not is_set(Chapter) and is_set(Title) then
            if is_set(Month) then
         Chapter = Title;
                Date = Month .. " " .. Date;
        ChapterLink = TitleLink;
                local Day = A['Day']
        TransChapter = TransTitle;
                if is_set(Day) then Date = Day .. " " .. Date end
        Title = '';
            end
        TitleLink = '';
        end
         TransTitle = '';
     end
   
     if inArray(PublicationDate, {Date, Year}) then PublicationDate = ''; end
    if not is_set(Date) and is_set(PublicationDate) then
         Date = PublicationDate;
         PublicationDate = '';
     end
     end


     -- Captures the value for Date prior to adding parens or other textual transformations
     -- Now perform various field substitutions.
     local DateIn = Date;
     -- 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(URL) and
     if not is_set(Authors) then
         not is_set(ChapterURL) and
         local Maximum = tonumber( A['DisplayAuthors'] );
        not is_set(ArchiveURL) and
        not is_set(ConferenceURL) and
        not is_set(TranscriptURL) then
          
          
         -- Test if cite web is called without giving a URL
         -- Preserve old-style implicit et al.
         if ( config.CitationClass == "web" ) then
         if not is_set(Maximum) and #a == 9 then  
             table.insert( z.message_tail, { seterror( 'cite_web_url', {}, true ) } );
            Maximum = 8;
             table.insert( z.message_tail, { seterror('implict_etal_author', {}, true ) } );
        elseif not is_set(Maximum) then
            Maximum = #a + 1;
         end
         end
           
        local control = {
            sep = A["AuthorSeparator"] .. " ",
            namesep = (first_set(A["AuthorNameSeparator"], A["NameSeparator"]) or "") .. " ",
            format = A["AuthorFormat"],
            maximum = Maximum,
            lastauthoramp = LastAuthorAmp
        };
          
          
         -- Test if accessdate is given without giving a URL
         -- If the coauthor field is also used, prevent ampersand and et al. formatting.
         if is_set(AccessDate) then
         if is_set(Coauthors) then
             table.insert( z.message_tail, { seterror( 'accessdate_missing_url', {}, true ) } );
             control.lastauthoramp = nil;
            AccessDate = '';
            control.maximum = #a + 1;
            deprecated_parameter(); -- |coauthor= and |coathors= are deprecated; add this page to deprecated parameter category
         end
         end
          
          
         -- Test if format is given without giving a URL
         Authors = listpeople(control, a)  
        if is_set(Format) then
            Format = Format .. seterror( 'format_missing_url' );
        end
     end
     end
   
 
    -- Test if citation has no title
if not is_set(Authors) and is_set(Coauthors) then -- coauthors aren't displayed if one of authors=, authorn=, or lastn= isn't specified
    if  not is_set(Chapter) and
table.insert( z.message_tail, { seterror('coauthors_missing_author', {}, true) } ); -- emit error message
        not is_set(Title) and
deprecated_parameter(); -- |coauthor= and |coathors= are deprecated; add this page to deprecated parameter category
        not is_set(Periodical) and
end
        not is_set(Conference) and
 
        not is_set(TransTitle) and
     local EditorCount
        not is_set(TransChapter) then
     if not is_set(Editors) then
        table.insert( z.message_tail, { seterror( 'citation_missing_title', {}, true ) } );
        local Maximum = tonumber( A['DisplayEditors'] );
    end
        -- Preserve old-style implicit et al.
      
        if not is_set(Maximum) and #e == 4 then  
     Format = is_set(Format) and " (" .. Format .. ")" or "";
             Maximum = 3;
   
             table.insert( z.message_tail, { seterror('implict_etal_editor', {}, true) } );
    local OriginalURL = URL
        elseif not is_set(Maximum) then
    DeadURL = DeadURL:lower();
            Maximum = #e + 1;
    if is_set( ArchiveURL ) then
        if ( DeadURL ~= "no" ) then
             URL = ArchiveURL
             URLorigin = A:ORIGIN('ArchiveURL')
         end
         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
     end
      
 
     -- Format chapter / article title
     local Cartography = "";
     if is_set(Chapter) and is_set(ChapterLink) then  
     local Scale = "";
        Chapter = "[[" .. ChapterLink .. "|" .. Chapter .. "]]";
     if config.CitationClass == "map" then
    end
        if not is_set( Authors ) and is_set( PublisherName ) then
    if is_set(Periodical) and is_set(Title) then
            Authors = PublisherName;
        Chapter = wrap( 'italic-title', Chapter );
            PublisherName = "";
         TransChapter = wrap( 'trans-italic-title', TransChapter );
        end
    else
        Cartography = A['Cartography'];
         Chapter = wrap( 'quoted-title', Chapter );
        if is_set( Cartography ) then
         TransChapter = wrap( 'trans-quoted-title', TransChapter );
            Cartography = sepc .. " " .. wrap( 'cartography', Cartography, use_lowercase );
         end       
        Scale = A['Scale'];
         if is_set( Scale ) then
            Scale = sepc .. " " .. Scale;
         end       
     end
     end
      
      
     local TransError = ""
     if not is_set(Date) then
    if is_set(TransChapter) then
        Date = Year;
        if not is_set(Chapter) then
        if is_set(Date) then
            TransError = " " .. seterror( 'trans_missing_chapter' );
            local Month = A['Month'];
        else
            if is_set(Month) then
            TransChapter = " " .. TransChapter;
            deprecated_parameter(); -- |month= (and also |day=) is deprecated; add this page to deprecated parameter category
                Date = Month .. " " .. Date;
                local Day = A['Day']
                if is_set(Day) then Date = Day .. " " .. Date end
            end
         end
         end
     end
     end
      
      
     Chapter = Chapter .. TransChapter;
     if inArray(PublicationDate, {Date, Year}) then PublicationDate = ''; end
    if not is_set(Date) and is_set(PublicationDate) then
        Date = PublicationDate;
        PublicationDate = '';
    end
 
    -- Captures the value for Date prior to adding parens or other textual transformations
    local DateIn = Date;
      
      
     if is_set(Chapter) then
     if not is_set(URL) and
         if not is_set(ChapterLink) then
         not is_set(ChapterURL) and
            if is_set(ChapterURL) then
        not is_set(ArchiveURL) and
                Chapter = externallink( ChapterURL, Chapter ) .. TransError;
        not is_set(ConferenceURL) and
                if not is_set(URL) then
        not is_set(TranscriptURL) then
                    Chapter = Chapter .. Format;
       
                    Format = "";
        -- Test if cite web is called without giving a URL
                end
        if ( config.CitationClass == "web" ) then
            elseif is_set(URL) then
             table.insert( z.message_tail, { seterror( 'cite_web_url', {}, true ) } );
                Chapter = externallink( URL, Chapter ) .. TransError .. Format;
        end
                URL = "";
          
                Format = "";
        -- Test if accessdate is given without giving a URL
             else
        if is_set(AccessDate) then
                Chapter = Chapter .. TransError;
             table.insert( z.message_tail, { seterror( 'accessdate_missing_url', {}, true ) } );
            end          
            AccessDate = '';
         elseif is_set(ChapterURL) then
         end
             Chapter = Chapter .. " " .. externallink( ChapterURL, nil, ChapterURLorigin ) ..
       
                TransError;
        -- Test if format is given without giving a URL
         else
        if is_set(Format) then
             Chapter = Chapter .. TransError;
             Format = Format .. seterror( 'format_missing_url' );
         end
         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 = "[[" .. TitleLink .. "|" .. Title .. "]]"
     end
     end
      
      
     if is_set(Periodical) then
    -- Test if citation has no title
         Title = wrap( 'quoted-title', Title );
     if not is_set(Chapter) and
         TransTitle = wrap( 'trans-quoted-title', TransTitle );
         not is_set(Title) and
    elseif inArray(config.CitationClass, {"web","news","pressrelease","conference"}) and
         not is_set(Periodical) and
            not is_set(Chapter) then
        not is_set(Conference) and
         Title = wrap( 'quoted-title', Title );
        not is_set(TransTitle) and
         TransTitle = wrap( 'trans-quoted-title', TransTitle );
         not is_set(TransChapter) then
    else
         table.insert( z.message_tail, { seterror( 'citation_missing_title', {}, true ) } );
        Title = wrap( 'italic-title', Title );
        TransTitle = wrap( 'trans-italic-title', TransTitle );
     end
     end
      
      
     TransError = "";
     Format = is_set(Format) and " (" .. Format .. ")" or "";
     if is_set(TransTitle) then
   
         if not is_set(Title) then
    local OriginalURL = URL
             TransError = " " .. seterror( 'trans_missing_title' );
    DeadURL = DeadURL:lower();
        else
     if is_set( ArchiveURL ) then
            TransTitle = " " .. TransTitle;
         if ( DeadURL ~= "no" ) then
             URL = ArchiveURL
            URLorigin = A:ORIGIN('ArchiveURL')
         end
         end
     end
     end
      
      
     Title = Title .. TransTitle;
     -- Format chapter / article title
   
     if is_set(Chapter) and is_set(ChapterLink) then  
     if is_set(Title) then
        Chapter = "[[" .. ChapterLink .. "|" .. Chapter .. "]]";
        if not is_set(TitleLink) and is_set(URL) then  
            Title = externallink( URL, Title ) .. TransError .. Format     
            URL = "";
            Format = "";
        else
            Title = Title .. TransError;
        end
     end
     end
   
     if is_set(Periodical) and is_set(Title) then
     if is_set(Place) then
         Chapter = wrap( 'italic-title', Chapter );
         Place = " " .. wrap( 'written', Place, use_lowercase ) .. sepc .. " ";
        TransChapter = wrap( 'trans-italic-title', TransChapter );
    else
        Chapter = wrap( 'quoted-title', Chapter );
        TransChapter = wrap( 'trans-quoted-title', TransChapter );
     end
     end
      
      
     if is_set(Conference) then
    local TransError = ""
         if is_set(ConferenceURL) then
     if is_set(TransChapter) then
             Conference = externallink( ConferenceURL, Conference );
         if not is_set(Chapter) then
             TransError = " " .. seterror( 'trans_missing_chapter' );
        else
            TransChapter = " " .. TransChapter;
         end
         end
        Conference = sepc .. " " .. Conference
    elseif is_set(ConferenceURL) then
        Conference = sepc .. " " .. externallink( ConferenceURL, nil, ConferenceURLorigin );
     end
     end
      
      
     if not is_set(Position) then
     Chapter = Chapter .. TransChapter;
        local Minutes = A['Minutes'];
   
        if is_set(Minutes) then
    if is_set(Chapter) then
             Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
        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
         else
             local Time = A['Time'];
             Chapter = Chapter .. TransError;
            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
        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 = "[[" .. TitleLink .. "|" .. Title .. "]]"
    end
   
    if is_set(Periodical) then
        Title = wrap( 'quoted-title', Title );
        TransTitle = wrap( 'trans-quoted-title', TransTitle );
    elseif inArray(config.CitationClass, {"web","news","pressrelease","conference"}) and
            not is_set(Chapter) then
        Title = wrap( 'quoted-title', Title );
        TransTitle = wrap( 'trans-quoted-title', TransTitle );
     else
     else
         Position = " " .. Position;
         Title = wrap( 'italic-title', Title );
         At = '';
         TransTitle = wrap( 'trans-italic-title', TransTitle );
     end
     end
      
      
     if not is_set(Page) then
    TransError = "";
         if is_set(Pages) then
     if is_set(TransTitle) then
             if is_set(Periodical) and
         if not is_set(Title) then
                not inArray(config.CitationClass, {"encyclopaedia","web","book","news"}) then
             TransError = " " .. seterror( 'trans_missing_title' );
                Pages = ": " .. Pages;
        else
            elseif tonumber(Pages) ~= nil then
            TransTitle = " " .. TransTitle;
                Pages = sepc .." " .. PPrefix .. Pages;
            else
                Pages = sepc .." " .. PPPrefix .. Pages;
            end
         end
         end
     else
     end
         if is_set(Periodical) and
   
             not inArray(config.CitationClass, {"encyclopaedia","web","book","news"}) then
    Title = Title .. TransTitle;
             Page = ": " .. Page;
   
    if is_set(Title) then
         if not is_set(TitleLink) and is_set(URL) then
             Title = externallink( URL, Title ) .. TransError .. Format     
            URL = "";
             Format = "";
         else
         else
             Page = sepc .." " .. PPrefix .. Page;
             Title = Title .. TransError;
         end
         end
     end
     end
      
      
     At = is_set(At) and (sepc .. " " .. At) or "";
     if is_set(Place) then
    Position = is_set(Position) and (sepc .. " " .. Position) or "";
        Place = " " .. wrap( 'written', Place, use_lowercase ) .. sepc .. " ";
     if config.CitationClass == 'map' then
    end
         local Section = A['Section'];
   
         local Inset = A['Inset'];
     if is_set(Conference) then
         if first_set( Pages, Page, At ) ~= nil or sepc ~= '.' then
         if is_set(ConferenceURL) then
            if is_set( Section ) then
            Conference = externallink( ConferenceURL, Conference );
                Section = ", " .. wrap( 'section', Section, true );
         end
            end
         Conference = sepc .. " " .. Conference
            if is_set( Inset ) then
    elseif is_set(ConferenceURL) then
                Inset = ", " .. wrap( 'inset', Inset, true );
        Conference = sepc .. " " .. externallink( ConferenceURL, nil, ConferenceURLorigin );
            end
    end
   
    if not is_set(Position) then
        local Minutes = A['Minutes'];
        if is_set(Minutes) then
            Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
         else
         else
             if is_set( Section ) then
            local Time = A['Time'];
                 Section = sepc .. " " .. wrap( 'section', Section, use_lowercase );
             if is_set(Time) then
                 if is_set( Inset ) then
                 local TimeCaption = A['TimeCaption']
                     Inset = ", " .. wrap( 'inset', Inset, true );
                 if not is_set(TimeCaption) then
                     TimeCaption = cfg.messages['event'];
                    if sepc ~= '.' then
                        TimeCaption = TimeCaption:lower();
                    end
                 end
                 end
             elseif is_set( Inset ) then
                Position = " " .. TimeCaption .. " " .. Time;
                 Inset = sepc .. " " .. wrap( 'inset', Inset, use_lowercase );
            end
             end             
        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"}) 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"}) 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;         
         At = At .. Section .. Inset;         
     end     
     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,  
--[[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.
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 {{xx icon}} templates - categorizes only mainspace citations and only when the language code is not 'en' (English).
Categories are assigned in a manner similar to the {{xx icon}} templates - categorizes only mainspace citations and only when the language code is not 'en' (English).
]]
]]
if is_set (Language) then
if is_set (Language) then
local name = cfg.iso639_1[Language:lower()]; -- get the language name if Language parameter has a valid iso 639-1 code
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
if nil == name then
Language=" " .. wrap( 'language', Language ); -- no match, use parameter's value
Language=" " .. wrap( 'language', Language ); -- no match, use parameter's value
else
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?
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 .. '[[Category:Articles with ' .. name .. '-language external links]]' ); -- in main space and not English: categorize
Language=" " .. wrap( 'language', name .. '[[Category:Articles with ' .. name .. '-language external links]]' ); -- in main space and not English: categorize
else
else
Language=" " .. wrap( 'language', name ); --not in mainspace or language is English so don't categorize
Language=" " .. wrap( 'language', name ); --not in mainspace or language is English so don't categorize
end
end
end
end
else
else
Language=""; -- language not specified so make sure this is an empty string;
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 "pressrelease" == config.CitationClass then -- if this citation is cite press release
if not is_set (TitleType) then
TitleType = "Press release"; -- if type not specified, display the press release annotation
else
if "none" == TitleType then TitleType = ""; end -- if |type=none then type parameter not displayed
end
 
elseif "techreport" == config.CitationClass then -- if this citation is cite techreport
if not is_set (TitleType) then
TitleType = "Technical report"; -- if type not specified, display the techreport annotation
else
if "none" == TitleType then TitleType = ""; end -- if |type=none then type parameter not displayed; |number=, if set, will be displayed
end
elseif "thesis" == config.CitationClass then -- if this citation is cite thesis
if not is_set (TitleType) then
if is_set(Degree) then -- if type not specified, display one of the thesis annotations
TitleType = Degree .. " thesis"; -- if a degree (masters, PhD, ...) is specified include it in the display
else
TitleType = "Thesis"; -- otherwise display the simple thesis annotation
end
else
if "none" == TitleType then TitleType = ""; end -- if |type=none then type parameter not displayed
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 = " <b>" .. hyphentodash(Volume) .. "</b>";
        end
    end
   
    ------------------------------------ totally unrelated data
    --[[ Loosely mimic {{subscription required}} 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 = '<span class="reference-accessdate">' .. sepc
            .. substitute( retrv_text, {AccessDate} ) .. '</span>'
    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
end


    Others = is_set(Others) and (sepc .. " " .. Others) or "";
    TitleType = is_set(TitleType) and (" (" .. TitleType .. ")") or "";
    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 = " <b>" .. hyphentodash(Volume) .. "</b>";
        end
    end
   
    ------------------------------------ totally unrelated data
    --[[ Loosely mimic {{subscription required}} 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 = '<span class="reference-accessdate">' .. sepc
            .. substitute( retrv_text, {AccessDate} ) .. '</span>'
    end
   
    if is_set(ID) then ID = sepc .." ".. ID; end
      
      
     ID_list = buildidlist( ID_list, {DoiBroken = DoiBroken, ASINTLD = ASINTLD, IgnoreISBN = IgnoreISBN, Embargo=Embargo} );
     ID_list = buildidlist( ID_list, {DoiBroken = DoiBroken, ASINTLD = ASINTLD, IgnoreISBN = IgnoreISBN, Embargo=Embargo} );
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                 end
                 end
             end
             end
            names[ #names + 1 ] = Year;
names[ #names + 1 ] = Year or anchor_year; -- Year first for legacy citations
             id = anchorid(names)
             id = anchorid(names)
         end
         end
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