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Module:Citation/CS1 (edit)

Revision as of 11:41, 21 May 2021

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21 revisions imported from wikipedia:Module:Citation/CS1: see Topic:Vtixlm0q28eo6jtf
m>Trappist the monk
(ISSN error detection; Expand uncategorized namespaces; Reg/Sub required msg tweak; Trap coauthors without authors; Hide error messages;)
m (21 revisions imported from wikipedia:Module:Citation/CS1: see Topic:Vtixlm0q28eo6jtf)
 
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local z = {
    error_categories = {};
    error_ids = {};
    message_tail = {};
}


-- Include translation message hooks, ID and error handling configuration settings.
require('Module:No globals');
local cfg = mw.loadData( 'Module:Citation/CS1/Configuration' );


-- Contains a list of all recognized parameters
--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
local whitelist = mw.loadData( 'Module:Citation/CS1/Whitelist' );
each of these counts against the Lua upvalue limit
]]
 
local validation; -- functions in Module:Citation/CS1/Date_validation
 
local utilities; -- functions in Module:Citation/CS1/Utilities
local z ={}; -- table of tables in Module:Citation/CS1/Utilities
 
local identifiers; -- functions and tables in Module:Citation/CS1/Identifiers
local metadata; -- functions in Module:Citation/CS1/COinS
local cfg = {}; -- table of configuration tables that are defined in Module:Citation/CS1/Configuration
local whitelist = {}; -- table of tables listing valid template parameter names; defined in Module:Citation/CS1/Whitelist
 
--[[------------------< P A G E  S C O P E  V A R I A B L E S >---------------
declare variables here that have page-wide scope that are not brought in from
other modules; that are created here and used here
]]
local added_deprecated_cat; -- Boolean flag so that the category is added only once
local added_discouraged_cat; -- Boolean flag so that the category is added only once
local added_vanc_errs; -- Boolean flag so we only emit one Vancouver error / category
local Frame; -- holds the module's frame table
 
--[[--------------------------< F I R S T _ S E T >------------------------------------------------------------
 
Locates and returns the first set value in a table of values where the order established in the table,
left-to-right (or top-to-bottom), is the order in which the values are evaluated.  Returns nil if none are set.
 
This version replaces the original 'for _, val in pairs do' and a similar version that used ipairs.  With the pairs
version the order of evaluation could not be guaranteed.  With the ipairs version, a nil value would terminate
the for-loop before it reached the actual end of the list.
 
]]


-- Whether variable is set or not
local function first_set (list, count)
function is_set( var )
local i = 1;
    return not (var == nil or var == '');
while i <= count do -- loop through all items in list
if utilities.is_set( list[i] ) then
return list[i]; -- return the first set list member
end
i = i + 1; -- point to next
end
end
end


-- First set variable or nil if none
 
function first_set(...)
--[[--------------------------< A D D _ V A N C _ E R R O R >----------------------------------------------------
    local list = {...};
 
    for _, var in pairs(list) do
Adds a single Vancouver system error message to the template's output regardless of how many error actually exist.
        if is_set( var ) then
To prevent duplication, added_vanc_errs is nil until an error message is emitted.
            return var;
 
        end
added_vanc_errs is a Boolean declared in page scope variables above
    end
 
]]
 
local function add_vanc_error (source, position)
if added_vanc_errs then return end
added_vanc_errs = true; -- note that we've added this category
table.insert( z.message_tail, { utilities.set_message ( 'err_vancouver', {source, position}, true ) } );
end
end


-- Whether needle is in haystack
 
function inArray( needle, haystack )
--[[--------------------------< I S _ S C H E M E >------------------------------------------------------------
    if needle == nil then
 
        return false;
does this thing that purports to be a URI scheme seem to be a valid scheme?  The scheme is checked to see if it
    end
is in agreement with http://tools.ietf.org/html/std66#section-3.1 which says:
    for n,v in ipairs( haystack ) do
Scheme names consist of a sequence of characters beginning with a
        if v == needle then
  letter and followed by any combination of letters, digits, plus
            return n;
  ("+"), period ("."), or hyphen ("-").
        end
 
    end
returns true if it does, else false
    return false;
 
]]
 
local function is_scheme (scheme)
return scheme and scheme:match ('^%a[%a%d%+%.%-]*:'); -- true if scheme is set and matches the pattern
end
end


-- Populates numbered arguments in a message string using an argument table.
 
function substitute( msg, args )
--[=[-------------------------< I S _ D O M A I N _ N A M E >--------------------------------------------------
    return args and tostring( mw.message.newRawMessage( msg, args ) ) or msg;
 
Does this thing that purports to be a domain name seem to be a valid domain name?
 
Syntax defined here: http://tools.ietf.org/html/rfc1034#section-3.5
BNF defined here: https://tools.ietf.org/html/rfc4234
Single character names are generally reserved; see https://tools.ietf.org/html/draft-ietf-dnsind-iana-dns-01#page-15;
see also [[Single-letter second-level domain]]
list of TLDs: https://www.iana.org/domains/root/db
 
RFC 952 (modified by RFC 1123) requires the first and last character of a hostname to be a letter or a digit.  Between
the first and last characters the name may use letters, digits, and the hyphen.
 
Also allowed are IPv4 addresses. IPv6 not supported
 
domain is expected to be stripped of any path so that the last character in the last character of the TLD.  tld
is two or more alpha characters.  Any preceding '//' (from splitting a URL with a scheme) will be stripped
here.  Perhaps not necessary but retained in case it is necessary for IPv4 dot decimal.
 
There are several tests:
the first character of the whole domain name including subdomains must be a letter or a digit
internationalized domain name (ASCII characters with .xn-- ASCII Compatible Encoding (ACE) prefix xn-- in the TLD) see https://tools.ietf.org/html/rfc3490
single-letter/digit second-level domains in the .org, .cash, and .today TLDs
q, x, and z SL domains in the .com TLD
i and q SL domains in the .net TLD
single-letter SL domains in the ccTLDs (where the ccTLD is two letters)
two-character SL domains in gTLDs (where the gTLD is two or more letters)
three-plus-character SL domains in gTLDs (where the gTLD is two or more letters)
IPv4 dot-decimal address format; TLD not allowed
 
returns true if domain appears to be a proper name and TLD or IPv4 address, else false
 
]=]
 
local function is_domain_name (domain)
if not domain then
return false; -- if not set, abandon
end
domain = domain:gsub ('^//', ''); -- strip '//' from domain name if present; done here so we only have to do it once
if not domain:match ('^[%w]') then -- first character must be letter or digit
return false;
end
 
if domain:match ('^%a+:') then -- hack to detect things that look like s:Page:Title where Page: is namespace at Wikisource
return false;
end
 
local patterns = { -- patterns that look like URLs
'%f[%w][%w][%w%-]+[%w]%.%a%a+$', -- three or more character hostname.hostname or hostname.tld
'%f[%w][%w][%w%-]+[%w]%.xn%-%-[%w]+$', -- internationalized domain name with ACE prefix
'%f[%a][qxz]%.com$', -- assigned one character .com hostname (x.com times out 2015-12-10)
'%f[%a][iq]%.net$', -- assigned one character .net hostname (q.net registered but not active 2015-12-10)
'%f[%w][%w]%.%a%a$', -- one character hostname and ccTLD (2 chars)
'%f[%w][%w][%w]%.%a%a+$', -- two character hostname and TLD
'^%d%d?%d?%.%d%d?%d?%.%d%d?%d?%.%d%d?%d?', -- IPv4 address
}
 
for _, pattern in ipairs (patterns) do -- loop through the patterns list
if domain:match (pattern) then
return true; -- if a match then we think that this thing that purports to be a URL is a URL
end
end
 
for _, d in ipairs ({'cash', 'company', 'today', 'org'}) do -- look for single letter second level domain names for these top level domains
if domain:match ('%f[%w][%w]%.' .. d) then
return true
end
end
return false; -- no matches, we don't know what this thing is
end
end


-- Wraps a string using a message_list configuration taking one argument
 
function wrap( key, str, lower )
--[[--------------------------< I S _ U R L >------------------------------------------------------------------
    if not is_set( str ) then
 
        return "";
returns true if the scheme and domain parts of a URL appear to be a valid URL; else false.
    elseif inArray( key, { 'italic-title', 'trans-italic-title' } ) then
 
        str = safeforitalics( str );
This function is the last step in the validation process.  This function is separate because there are cases that
    end
are not covered by split_url(), for example is_parameter_ext_wikilink() which is looking for bracketted external
    if lower == true then
wikilinks.
        return substitute( cfg.messages[key]:lower(), {str} );
 
    else
]]
        return substitute( cfg.messages[key], {str} );
 
    end      
local function is_url (scheme, domain)
if utilities.is_set (scheme) then -- if scheme is set check it and domain
return is_scheme (scheme) and is_domain_name (domain);
else
return is_domain_name (domain); -- scheme not set when URL is protocol-relative
end
end
end


--[[
 
Argument wrapper.  This function provides support for argument
--[[--------------------------< S P L I T _ U R L >------------------------------------------------------------
mapping defined in the configuration file so that multiple names
 
can be transparently aliased to single internal variable.
Split a URL into a scheme, authority indicator, and domain.
 
First remove Fully Qualified Domain Name terminator (a dot following TLD) (if any) and any path(/), query(?) or fragment(#).
 
If protocol-relative URL, return nil scheme and domain else return nil for both scheme and domain.
 
When not protocol-relative, get scheme, authority indicator, and domain.  If there is an authority indicator (one
or more '/' characters immediately following the scheme's colon), make sure that there are only 2.
 
Any URL that does not have news: scheme must have authority indicator (//). TODO: are there other common schemes
like news: that don't use authority indicator?
 
Strip off any port and path;
 
]]
]]
function argument_wrapper( args )
 
    local origin = {};
local function split_url (url_str)
   
local scheme, authority, domain;
    return setmetatable({
        ORIGIN = function( self, k )
url_str = url_str:gsub ('([%a%d])%.?[/%?#].*$', '%1'); -- strip FQDN terminator and path(/), query(?), fragment (#) (the capture prevents false replacement of '//')
            local dummy = self[k]; --force the variable to be loaded.
 
            return origin[k];
if url_str:match ('^//%S*') then -- if there is what appears to be a protocol-relative URL
        end
domain = url_str:match ('^//(%S*)')
    },
elseif url_str:match ('%S-:/*%S+') then -- if there is what appears to be a scheme, optional authority indicator, and domain name
    {
scheme, authority, domain = url_str:match ('(%S-:)(/*)(%S+)'); -- extract the scheme, authority indicator, and domain portions
        __index = function ( tbl, k )
if utilities.is_set (authority) then
            if origin[k] ~= nil then
authority = authority:gsub ('//', '', 1); -- replace place 1 pair of '/' with nothing;
                return nil;
if utilities.is_set(authority) then -- if anything left (1 or 3+ '/' where authority should be) then
            end
return scheme; -- return scheme only making domain nil which will cause an error message
           
end
            local args, list, v = args, cfg.aliases[k];
else
           
if not scheme:match ('^news:') then -- except for news:..., MediaWiki won't link URLs that do not have authority indicator; TODO: a better way to do this test?
            if type( list ) == 'table' then
return scheme; -- return scheme only making domain nil which will cause an error message
                v, origin[k] = selectone( args, list, 'redundant_parameters' );
end
                if origin[k] == nil then
end
                    origin[k] = ''; -- Empty string, not nil
domain = domain:gsub ('(%a):%d+', '%1'); -- strip port number if present
                end
end
            elseif list ~= nil then
                v, origin[k] = args[list], list;
return scheme, domain;
            else
                -- maybe let through instead of raising an error?
                -- v, origin[k] = args[k], k;
                error( cfg.messages['unknown_argument_map'] );
            end
           
            -- Empty strings, not nil;
            if v == nil then
                v = cfg.defaults[k] or '';
                origin[k] = '';
            end
           
            tbl = rawset( tbl, k, v );
            return v;
        end,
    });
end
end


-- Checks that parameter name is valid using the whitelist
 
function validate( name )
--[[--------------------------< L I N K _ P A R A M _ O K >---------------------------------------------------
    name = tostring( name );
 
   
checks the content of |title-link=, |series-link=, |author-link=, etc. for properly formatted content: no wikilinks, no URLs
    -- Normal arguments
 
    if whitelist.basic_arguments[ name ] then
Link parameters are to hold the title of a Wikipedia article, so none of the WP:TITLESPECIALCHARACTERS are allowed:
        return true;
# < > [ ] | { } _
    end
except the underscore which is used as a space in wiki URLs and # which is used for section links
   
 
    -- Arguments with numbers in them
returns false when the value contains any of these characters.
    name = name:gsub( "%d+", "#" );
 
    if whitelist.numbered_arguments[ name ] then
When there are no illegal characters, this function returns TRUE if value DOES NOT appear to be a valid URL (the
        return true;
|<param>-link= parameter is ok); else false when value appears to be a valid URL (the |<param>-link= parameter is NOT ok).
    end
 
   
]]
    -- Not found, argument not supported.
 
    return false
local function link_param_ok (value)
local scheme, domain;
if value:find ('[<>%[%]|{}]') then -- if any prohibited characters
return false;
end
 
scheme, domain = split_url (value); -- get scheme or nil and domain or nil from URL;
return not is_url (scheme, domain); -- return true if value DOES NOT appear to be a valid URL
end
end


-- Formats a comment for error trapping
 
function errorcomment( content, hidden )
--[[--------------------------< L I N K _ T I T L E _ O K >---------------------------------------------------
    return wrap( hidden and 'hidden-error' or 'visible-error', content );
 
Use link_param_ok() to validate |<param>-link= value and its matching |<title>= value.
 
|<title>= may be wiki-linked but not when |<param>-link= has a value.  This function emits an error message when
that condition exists
 
check <link> for inter-language interwiki-link prefix.  prefix must be a MediaWiki-recognized language
code and must begin with a colon.
 
]]
 
local function link_title_ok (link, lorig, title, torig)
local orig;
if utilities.is_set (link) then -- don't bother if <param>-link doesn't have a value
if not link_param_ok (link) then -- check |<param>-link= markup
orig = lorig; -- identify the failing link parameter
elseif title:find ('%[%[') then -- check |title= for wikilink markup
orig = torig; -- identify the failing |title= parameter
elseif link:match ('^%a+:') then -- if the link is what looks like an interwiki
local prefix = link:match ('^(%a+):'):lower(); -- get the interwiki prefix
 
if cfg.inter_wiki_map[prefix] then -- if prefix is in the map, must have preceding colon
orig = lorig; -- flag as error
end
end
end
 
if utilities.is_set (orig) then
link = ''; -- unset
table.insert( z.message_tail, { utilities.set_message ( 'err_bad_paramlink', orig)}); -- URL or wikilink in |title= with |title-link=;
end
return link; -- link if ok, empty string else
end
end


--[[
 
Sets an error condition and returns the appropriate error message.  The actual placement
--[[--------------------------< C H E C K _ U R L >------------------------------------------------------------
of the error message in the output is the responsibility of the calling function.
 
Determines whether a URL string appears to be valid.
 
First we test for space characters.  If any are found, return false.  Then split the URL into scheme and domain
portions, or for protocol-relative (//example.com) URLs, just the domain.  Use is_url() to validate the two
portions of the URL.  If both are valid, or for protocol-relative if domain is valid, return true, else false.
 
Because it is different from a standard URL, and because this module used external_link() to make external links
that work for standard and news: links, we validate newsgroup names here.  The specification for a newsgroup name
is at https://tools.ietf.org/html/rfc5536#section-3.1.4
 
]]
]]
function seterror( error_id, arguments, raw, prefix, suffix )
 
    local error_state = cfg.error_conditions[ error_id ];
local function check_url( url_str )
   
if nil == url_str:match ("^%S+$") then -- if there are any spaces in |url=value it can't be a proper URL
    prefix = prefix or "";
return false;
    suffix = suffix or "";
end
   
local scheme, domain;
    if error_state == nil then
 
        error( cfg.messages['undefined_error'] );
scheme, domain = split_url (url_str); -- get scheme or nil and domain or nil from URL;
    elseif is_set( error_state.category ) then
        table.insert( z.error_categories, error_state.category );
if 'news:' == scheme then -- special case for newsgroups
    end
return domain:match('^[%a%d%+%-_]+%.[%a%d%+%-_%.]*[%a%d%+%-_]$');
   
end
    local message = substitute( error_state.message, arguments );
   
return is_url (scheme, domain); -- return true if value appears to be a valid URL
    message = message .. " ([[" .. cfg.messages['help page link'] ..
        "#" .. error_state.anchor .. "|" ..
        cfg.messages['help page label'] .. "]])";
   
    z.error_ids[ error_id ] = true;
    if inArray( error_id, { 'bare_url_missing_title', 'trans_missing_title' } )
            and z.error_ids['citation_missing_title'] then
        return '', false;
    end
   
    message = table.concat({ prefix, message, suffix });
   
    if raw == true then
        return message, error_state.hidden;
    end      
       
    return errorcomment( message, error_state.hidden );
end
end


-- Formats a wiki style external link
 
function externallinkid(options)
--[=[-------------------------< I S _ P A R A M E T E R _ E X T _ W I K I L I N K >----------------------------
    local url_string = options.id;
 
    if options.encode == true or options.encode == nil then
Return true if a parameter value has a string that begins and ends with square brackets [ and ] and the first
        url_string = mw.uri.encode( url_string );
non-space characters following the opening bracket appear to be a URL.  The test will also find external wikilinks
    end
that use protocol-relative URLs. Also finds bare URLs.
    return mw.ustring.format( '[[%s|%s]]%s[%s%s%s %s]',
 
        options.link, options.label, options.separator or "&nbsp;",
The frontier pattern prevents a match on interwiki-links which are similar to scheme:path URLs. The tests that
        options.prefix, url_string, options.suffix or "",
find bracketed URLs are required because the parameters that call this test (currently |title=, |chapter=, |work=,
        mw.text.nowiki(options.id)
and |publisher=) may have wikilinks and there are articles or redirects like '//Hus' so, while uncommon, |title=[[//Hus]]
    );
is possible as might be [[en://Hus]].
 
]=]
 
local function is_parameter_ext_wikilink (value)
local scheme, domain;
 
if value:match ('%f[%[]%[%a%S*:%S+.*%]') then -- if ext. wikilink with scheme and domain: [xxxx://yyyyy.zzz]
scheme, domain = split_url (value:match ('%f[%[]%[(%a%S*:%S+).*%]'));
elseif value:match ('%f[%[]%[//%S+.*%]') then -- if protocol-relative ext. wikilink: [//yyyyy.zzz]
scheme, domain = split_url (value:match ('%f[%[]%[(//%S+).*%]'));
elseif value:match ('%a%S*:%S+') then -- if bare URL with scheme; may have leading or trailing plain text
scheme, domain = split_url (value:match ('(%a%S*:%S+)'));
elseif value:match ('//%S+') then -- if protocol-relative bare URL: //yyyyy.zzz; may have leading or trailing plain text
scheme, domain = split_url (value:match ('(//%S+)')); -- what is left should be the domain
else
return false; -- didn't find anything that is obviously a URL
end
 
return is_url (scheme, domain); -- return true if value appears to be a valid URL
end
end


-- Formats a wiki style internal link
 
function internallinkid(options)
--[[-------------------------< C H E C K _ F O R _ U R L >-----------------------------------------------------
    return mw.ustring.format( '[[%s|%s]]%s[[%s%s%s|%s]]',
 
        options.link, options.label, options.separator or "&nbsp;",
loop through a list of parameters and their values.  Look at the value and if it has an external link, emit an error message.
        options.prefix, options.id, options.suffix or "",
 
        mw.text.nowiki(options.id)
]]
    );
 
local function check_for_url (parameter_list)
local error_message = '';
for k, v in pairs (parameter_list) do -- for each parameter in the list
if is_parameter_ext_wikilink (v) then -- look at the value; if there is a URL add an error message
if utilities.is_set(error_message) then -- once we've added the first portion of the error message ...
error_message = error_message .. ", "; -- ... add a comma space separator
end
error_message = error_message .. "&#124;" .. k .. "="; -- add the failed parameter
end
end
if utilities.is_set (error_message) then -- done looping, if there is an error message, display it
table.insert( z.message_tail, { utilities.set_message ( 'err_param_has_ext_link', {error_message}, true ) } );
end
end
end


-- Format an external link with error checking
 
function externallink( URL, label, source )
--[[--------------------------< S A F E _ F O R _ U R L >------------------------------------------------------
    local error_str = "";
 
    if not is_set( label ) then
Escape sequences for content that will be used for URL descriptions
        label = URL;
 
        if is_set( source ) then
]]
            error_str = seterror( 'bare_url_missing_title', { wrap( 'parameter', source ) }, false, " " );
 
        else
local function safe_for_url( str )
            error( cfg.messages["bare_url_no_origin"] );
if str:match( "%[%[.-%]%]" ) ~= nil then  
        end          
table.insert( z.message_tail, { utilities.set_message ( 'err_wikilink_in_url', {}, true ) } );
    end
end
    if not checkurl( URL ) then
        error_str = seterror( 'bad_url', {}, false, " " ) .. error_str;
return str:gsub( '[%[%]\n]', {
    end
['['] = '&#91;',
    return table.concat({ "[", URL, " ", safeforurl( label ), "]", error_str });
[']'] = '&#93;',
['\n'] = ' ' } );
end
end


-- Formats a link to Amazon
 
function amazon(id, domain)
--[[--------------------------< E X T E R N A L _ L I N K >----------------------------------------------------
    if not is_set(domain) then  
 
        domain = "com"
Format an external link with error checking
    elseif ( "jp" == domain or "uk" == domain ) then
 
        domain = "co." .. domain
]]
    end
 
    local handler = cfg.id_handlers['ASIN'];
local function external_link( URL, label, source, access)
    return externallinkid({link = handler.link,
local error_str = "";
        label=handler.label , prefix="//www.amazon."..domain.."/dp/",id=id,
local domain;
        encode=handler.encode, separator = handler.separator})
local path;
local base_url;
 
if not utilities.is_set ( label ) then
label = URL;
if utilities.is_set ( source ) then
error_str = utilities.set_message ( 'err_bare_url_missing_title', { utilities.wrap_style ('parameter', source) }, false, " " );
else
error( cfg.messages["bare_url_no_origin"] );
end
end
if not check_url( URL ) then
error_str = utilities.set_message ( 'err_bad_url', {utilities.wrap_style ('parameter', source)}, false, " " ) .. error_str;
end
domain, path = URL:match ('^([/%.%-%+:%a%d]+)([/%?#].*)$'); -- split the URL into scheme plus domain and path
if path then -- if there is a path portion
path = path:gsub ('[%[%]]', {['['] = '%5b', [']'] = '%5d'}); -- replace '[' and ']' with their percent-encoded values
URL = table.concat ({domain, path}); -- and reassemble
end
 
base_url = table.concat({ "[", URL, " ", safe_for_url (label), "]" }); -- assemble a wiki-markup URL
 
if utilities.is_set (access) then -- access level (subscription, registration, limited)
base_url = utilities.substitute (cfg.presentation['ext-link-access-signal'], {cfg.presentation[access].class, cfg.presentation[access].title, base_url}); -- add the appropriate icon
end
return table.concat ({base_url, error_str});
end
end


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


The {{citation/core}} version of {{cite journal}} links the citation title (if url parameter is empty) when embargo date is in the past
--[[--------------------------< D E P R E C A T E D _ P A R A M E T E R >--------------------------------------
or when embargo parameter is missing or empty. That behavior is inconsistent with the behavior of other identifiers used in CS1 and is
 
not supported here.
Categorize and emit an error message when the citation contains one or more deprecated parameters.  The function includes the
offending parameter name to the error message. Only one error message is emitted regardless of the number of deprecated
parameters in the citation.
 
added_deprecated_cat is a Boolean declared in page scope variables above
 
]]
]]
function pmc(id, embargo)
 
local handler = cfg.id_handlers['PMC'];
local function deprecated_parameter(name)
   
if not added_deprecated_cat then
local text;
added_deprecated_cat = true; -- note that we've added this category
table.insert( z.message_tail, { utilities.set_message ( 'err_deprecated_params', {name}, true ) } ); -- add error message
end
end
 
 
--[[--------------------------< D I S C O U R A G E D _ P A R A M E T E R >------------------------------------
 
Categorize and emit an maintenance message when the citation contains one or more discouraged parameters.  Only
one error message is emitted regardless of the number of discouraged parameters in the citation.
 
added_discouraged_cat is a Boolean declared in page scope variables above
 
]]
 
local function discouraged_parameter(name)
if not added_discouraged_cat then
added_discouraged_cat = true; -- note that we've added this category
table.insert( z.message_tail, { utilities.set_message ( 'maint_discouraged', {name}, true ) } ); -- add maint message
end
end
 
 
--[=[-------------------------< K E R N _ Q U O T E S >--------------------------------------------------------
 
Apply kerning to open the space between the quote mark provided by the module and a leading or trailing quote
mark contained in a |title= or |chapter= parameter's value.
 
This function will positive kern either single or double quotes:
"'Unkerned title with leading and trailing single quote marks'"
" 'Kerned title with leading and trailing single quote marks' " (in real life the kerning isn't as wide as this example)
Double single quotes (italic or bold wiki-markup) are not kerned.
 
Replaces Unicode quote marks in plain text or in the label portion of a [[L|D]] style wikilink with typewriter
quote marks regardless of the need for kerning.  Unicode quote marks are not replaced in simple [[D]] wikilinks.
 
Call this function for chapter titles, for website titles, etc.; not for book titles.
 
]=]
 
local function kern_quotes (str)
local cap = '';
local cap2 = '';
local wl_type, label, link;
 
wl_type, label, link = utilities.is_wikilink (str); -- wl_type is: 0, no wl (text in label variable); 1, [[D]]; 2, [[L|D]]
if 1 == wl_type then -- [[D]] simple wikilink with or without quote marks
if mw.ustring.match (str, '%[%[[\"“”\'‘’].+[\"“”\'‘’]%]%]') then -- leading and trailing quote marks
str = utilities.substitute (cfg.presentation['kern-wl-both'], str);
elseif mw.ustring.match (str, '%[%[[\"“”\'‘’].+%]%]') then -- leading quote marks
str = utilities.substitute (cfg.presentation['kern-wl-left'], str);
elseif mw.ustring.match (str, '%[%[.+[\"“”\'‘’]%]%]') then -- trailing quote marks
str = utilities.substitute (cfg.presentation['kern-wl-right'], str);
end
 
else -- plain text or [[L|D]]; text in label variable
label = mw.ustring.gsub (label, '[“”]', '\"'); -- replace “” (U+201C & U+201D) with " (typewriter double quote mark)
label = mw.ustring.gsub (label, '[‘’]', '\''); -- replace ‘’ (U+2018 & U+2019) with ' (typewriter single quote mark)
 
cap, cap2 = mw.ustring.match (label, "^([\"\'])([^\'].+)"); -- match leading double or single quote but not doubled single quotes (italic markup)
if utilities.is_set (cap) then
label = utilities.substitute (cfg.presentation['kern-left'], {cap, cap2});
end
if is_set(embargo) then
cap, cap2 = mw.ustring.match (label, "^(.+[^\'])([\"\'])$") -- match trailing double or single quote but not doubled single quotes (italic markup)
local lang = mw.getContentLanguage();
if utilities.is_set (cap) then
local good1, embargo_date, good2, todays_date;
label = utilities.substitute (cfg.presentation['kern-right'], {cap, cap2});
good1, embargo_date = pcall( lang.formatDate, lang, 'U', embargo );
end
good2, todays_date = pcall( lang.formatDate, lang, 'U' );
if 2 == wl_type then
str = utilities.make_wikilink (link, label); -- reassemble the wikilink
else
str = label;
end
end
return str;
end


if good1 and good2 and tonumber( embargo_date ) < tonumber( todays_date ) then --if embargo date is in the past then
 
text = externallinkid({link = handler.link, label = handler.label, --ok to link to article
--[[--------------------------< F O R M A T _ S C R I P T _ V A L U E >----------------------------------------
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
 
|script-title= holds title parameters that are not written in Latin-based scripts: Chinese, Japanese, Arabic, Hebrew, etc. These scripts should
not be italicized and may be written right-to-left.  The value supplied by |script-title= is concatenated onto Title after Title has been wrapped
in italic markup.
 
Regardless of language, all values provided by |script-title= are wrapped in <bdi>...</bdi> tags to isolate RTL languages from the English left to right.
 
|script-title= provides a unique feature.  The value in |script-title= may be prefixed with a two-character ISO 639-1 language code and a colon:
|script-title=ja:*** *** (where * represents a Japanese character)
Spaces between the two-character code and the colon and the colon and the first script character are allowed:
|script-title=ja : *** ***
|script-title=ja: *** ***
|script-title=ja :*** ***
Spaces preceding the prefix are allowed: |script-title = ja:*** ***
 
The prefix is checked for validity.  If it is a valid ISO 639-1 language code, the lang attribute (lang="ja") is added to the <bdi> tag so that browsers can
know the language the tag contains.  This may help the browser render the script more correctly.  If the prefix is invalid, the lang attribute
is not added.  At this time there is no error message for this condition.
 
Supports |script-title=, |script-chapter=, |script-<periodical>=
 
]]
 
local function format_script_value (script_value, script_param)
local lang=''; -- initialize to empty string
local name;
if script_value:match('^%l%l%l?%s*:') then -- if first 3 or 4 non-space characters are script language prefix
lang = script_value:match('^(%l%l%l?)%s*:%s*%S.*'); -- get the language prefix or nil if there is no script
if not utilities.is_set (lang) then
table.insert( z.message_tail, { utilities.set_message ( 'err_script_parameter', {script_param, 'missing title part'}, true ) } ); -- prefix without 'title'; add error message
return ''; -- script_value was just the prefix so return empty string
end
-- if we get this far we have prefix and script
name = cfg.lang_code_remap[lang] or mw.language.fetchLanguageName( lang, cfg.this_wiki_code ); -- get language name so that we can use it to categorize
if utilities.is_set (name) then -- is prefix a proper ISO 639-1 language code?
script_value = script_value:gsub ('^%l+%s*:%s*', ''); -- strip prefix from script
-- is prefix one of these language codes?
if utilities.in_array (lang, cfg.script_lang_codes) then
utilities.add_prop_cat ('script_with_name', {name, lang})
else
table.insert( z.message_tail, { utilities.set_message ( 'err_script_parameter', {script_param, 'unknown language code'}, true ) } ); -- unknown script-language; add error message
end
lang = ' lang="' .. lang .. '" '; -- convert prefix into a lang attribute
else
else
text="[[" .. handler.link .. "|" .. handler.label .. "]]:" .. handler.separator .. id; --still embargoed so no external link
table.insert( z.message_tail, { utilities.set_message ( 'err_script_parameter', {script_param, 'invalid language code'}, true ) } ); -- invalid language code; add error message
lang = ''; -- invalid so set lang to empty string
end
end
else
else
text = externallinkid({link = handler.link, label = handler.label, --no embargo date, ok to link to article
table.insert( z.message_tail, { utilities.set_message ( 'err_script_parameter', {script_param, 'missing prefix'}, true ) } ); -- no language code prefix; add error message
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
end
end
return text
script_value = utilities.substitute (cfg.presentation['bdi'], {lang, script_value}); -- isolate in case script is RTL
 
return script_value;
end
end


-- Formats a DOI and checks for DOI errors.
 
function doi(id, inactive)
--[[--------------------------< S C R I P T _ C O N C A T E N A T E >------------------------------------------
    local cat = ""
 
    local handler = cfg.id_handlers['DOI'];
Initially for |title= and |script-title=, this function concatenates those two parameter values after the script value has been
   
wrapped in <bdi> tags.
    local text;
]]
    if is_set(inactive) then
 
        text = "[[" .. handler.link .. "|" .. handler.label .. "]]:" .. id;
local function script_concatenate (title, script, script_param)
        table.insert( z.error_categories, "Pages with DOIs inactive since " .. selectyear(inactive) );      
if utilities.is_set (script) then
        inactive = " (" .. cfg.messages['inactive'] .. " " .. inactive .. ")"
script = format_script_value (script, script_param); -- <bdi> tags, lang attribute, categorization, etc.; returns empty string on error
    else
if utilities.is_set (script) then
        text = externallinkid({link = handler.link, label = handler.label,
title = title .. ' ' .. script; -- concatenate title and script title
            prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
end
        inactive = ""
end
    end
return title;
    if ( string.sub(id,1,3) ~= "10." ) then    
        cat = seterror( 'bad_doi' );
    end
    return text .. inactive .. cat
end
end


-- Formats an OpenLibrary link, and checks for associated errors.
 
function openlibrary(id)
--[[--------------------------< W R A P _ M S G >--------------------------------------------------------------
    local code = id:sub(-1,-1)
 
    local handler = cfg.id_handlers['OL'];
Applies additional message text to various parameter values. Supplied string is wrapped using a message_list
    if ( code == "A" ) then
configuration taking one argument.  Supports lower case text for {{citation}} templates. Additional text taken
        return externallinkid({link=handler.link, label=handler.label,
from citation_config.messages - the reason this function is similar to but separate from wrap_style().
            prefix="http://openlibrary.org/authors/OL",id=id, separator=handler.separator,
 
            encode = handler.encode})
]]
    elseif ( code == "M" ) then
 
        return externallinkid({link=handler.link, label=handler.label,
local function wrap_msg (key, str, lower)
            prefix="http://openlibrary.org/books/OL",id=id, separator=handler.separator,
if not utilities.is_set ( str ) then
            encode = handler.encode})
return "";
    elseif ( code == "W" ) then
end
        return externallinkid({link=handler.link, label=handler.label,
if true == lower then
            prefix= "http://openlibrary.org/works/OL",id=id, separator=handler.separator,
local msg;
            encode = handler.encode})
msg = cfg.messages[key]:lower(); -- set the message to lower case before
    else
return utilities.substitute ( msg, str ); -- including template text
        return externallinkid({link=handler.link, label=handler.label,
else
            prefix= "http://openlibrary.org/OL",id=id, separator=handler.separator,
return utilities.substitute ( cfg.messages[key], str );
            encode = handler.encode}) ..
end
            ' ' .. seterror( 'bad_ol' );
    end
end
end


--[[
Validate and format an issn.  This code fixes the case where an editor has included an ISSN in the citation but has separated the two groups of four
digits with a space.  When that condition occurred, the resulting link looked like this:


|issn=0819 4327 gives: [http://www.worldcat.org/issn/0819 4327 0819 4327]  -- can't have spaces in an external link
--[[----------------< W I K I S O U R C E _ U R L _ M A K E >-------------------
 
Makes a Wikisource URL from Wikisource interwiki-link.  Returns the URL and appropriate
label; nil else.
 
str is the value assigned to |chapter= (or aliases) or |title= or |title-link=
 
]]
 
local function wikisource_url_make (str)
local wl_type, D, L;
local ws_url, ws_label;
local wikisource_prefix = table.concat ({'https://', cfg.this_wiki_code, '.wikisource.org/wiki/'});
 
wl_type, D, L = utilities.is_wikilink (str); -- wl_type is 0 (not a wikilink), 1 (simple wikilink), 2 (complex wikilink)
 
if 0 == wl_type then -- not a wikilink; might be from |title-link=
str = D:match ('^[Ww]ikisource:(.+)') or D:match ('^[Ss]:(.+)'); -- article title from interwiki link with long-form or short-form namespace
if utilities.is_set (str) then
ws_url = table.concat ({ -- build a Wikisource URL
wikisource_prefix, -- prefix
str, -- article title
});
ws_label = str; -- label for the URL
end
elseif 1 == wl_type then -- simple wikilink: [[Wikisource:ws article]]
str = D:match ('^[Ww]ikisource:(.+)') or D:match ('^[Ss]:(.+)'); -- article title from interwiki link with long-form or short-form namespace
if utilities.is_set (str) then
ws_url = table.concat ({ -- build a Wikisource URL
wikisource_prefix, -- prefix
str, -- article title
});
ws_label = str; -- label for the URL
end
elseif 2 == wl_type then -- non-so-simple wikilink: [[Wikisource:ws article|displayed text]] ([[L|D]])
str = L:match ('^[Ww]ikisource:(.+)') or L:match ('^[Ss]:(.+)'); -- article title from interwiki link with long-form or short-form namespace
if utilities.is_set (str) then
ws_label = D; -- get ws article name from display portion of interwiki link
ws_url = table.concat ({ -- build a Wikisource URL
wikisource_prefix, -- prefix
str, -- article title without namespace from link portion of wikilink
});
end
end
 
if ws_url then
ws_url = mw.uri.encode (ws_url, 'WIKI'); -- make a usable URL
ws_url = ws_url:gsub ('%%23', '#'); -- undo percent-encoding of fragment marker
end
 
return ws_url, ws_label, L or D; -- return proper URL or nil and a label or nil
end
 
 
--[[----------------< F O R M A T _ P E R I O D I C A L >-----------------------
 
Format the three periodical parameters: |script-<periodical>=, |<periodical>=,
and |trans-<periodical>= into a single Periodical meta-parameter.
 
]]
 
local function format_periodical (script_periodical, script_periodical_source, periodical, trans_periodical)
local periodical_error = '';
 
if not utilities.is_set (periodical) then
periodical = ''; -- to be safe for concatenation
else
periodical = utilities.wrap_style ('italic-title', periodical); -- style
end
 
periodical = script_concatenate (periodical, script_periodical, script_periodical_source); -- <bdi> tags, lang attribute, categorization, etc.; must be done after title is wrapped
 
if utilities.is_set (trans_periodical) then
trans_periodical = utilities.wrap_style ('trans-italic-title', trans_periodical);
if utilities.is_set (periodical) then
periodical = periodical .. ' ' .. trans_periodical;
else -- here when trans-periodical without periodical or script-periodical
periodical = trans_periodical;
periodical_error = ' ' .. utilities.set_message ('err_trans_missing_title', {'periodical'});
end
end
 
return periodical .. periodical_error;
end
 
 
--[[------------------< F O R M A T _ C H A P T E R _ T I T L E >---------------
 
Format the four chapter parameters: |script-chapter=, |chapter=, |trans-chapter=,
and |chapter-url= into a single chapter meta- parameter (chapter_url_source used
for error messages).
 
]]
 
local function format_chapter_title (script_chapter, script_chapter_source, chapter, chapter_source, trans_chapter, trans_chapter_source, chapter_url, chapter_url_source, no_quotes, access)
local chapter_error = '';
 
local ws_url, ws_label, L = wikisource_url_make (chapter); -- make a wikisource URL and label from a wikisource interwiki link
if ws_url then
ws_label = ws_label:gsub ('_', ' '); -- replace underscore separators with space characters
chapter = ws_label;
end
 
if not utilities.is_set (chapter) then
chapter = ''; -- to be safe for concatenation
else
if false == no_quotes then
chapter = kern_quotes (chapter); -- if necessary, separate chapter title's leading and trailing quote marks from module provided quote marks
chapter = utilities.wrap_style ('quoted-title', chapter);
end
end
 
chapter = script_concatenate (chapter, script_chapter, script_chapter_source); -- <bdi> tags, lang attribute, categorization, etc.; must be done after title is wrapped
 
if utilities.is_set (chapter_url) then
chapter = external_link (chapter_url, chapter, chapter_url_source, access); -- adds bare_url_missing_title error if appropriate
elseif ws_url then
chapter = external_link (ws_url, chapter .. '&nbsp;', 'ws link in chapter'); -- adds bare_url_missing_title error if appropriate; space char to move icon away from chap text; TODO: better way to do this?
chapter = utilities.substitute (cfg.presentation['interwiki-icon'], {cfg.presentation['class-wikisource'], L, chapter});
end
 
if utilities.is_set (trans_chapter) then
trans_chapter = utilities.wrap_style ('trans-quoted-title', trans_chapter);
if utilities.is_set (chapter) then
chapter = chapter .. ' ' .. trans_chapter;
else -- here when trans_chapter without chapter or script-chapter
chapter = trans_chapter;
chapter_source = trans_chapter_source:match ('trans%-?(.+)'); -- when no chapter, get matching name from trans-<param>
chapter_error = ' ' .. utilities.set_message ('err_trans_missing_title', {chapter_source});
end
end
 
return chapter .. chapter_error;
end
 
 
--[[----------------< H A S _ I N V I S I B L E _ C H A R S >-------------------
 
This function searches a parameter's value for non-printable or invisible characters.
The search stops at the first match.
 
This function will detect the visible replacement character when it is part of the Wikisource.
 
Detects but ignores nowiki and math stripmarkers. Also detects other named stripmarkers
(gallery, math, pre, ref) and identifies them with a slightly different error message.
See also coins_cleanup().
 
Output of this function is an error message that identifies the character or the
Unicode group, or the stripmarker that was detected along with its position (or,
for multi-byte characters, the position of its first byte) in the parameter value.
 
]]
 
local function has_invisible_chars (param, v)
local position = ''; -- position of invisible char or starting position of stripmarker
local capture; -- used by stripmarker detection to hold name of the stripmarker
local stripmarker; -- boolean set true when a stripmarker is found
 
capture = string.match (v, '[%w%p ]*'); -- test for values that are simple ASCII text and bypass other tests if true
if capture == v then -- if same there are no Unicode characters
return;
end
 
for _, invisible_char in ipairs (cfg.invisible_chars) do
local char_name = invisible_char[1]; -- the character or group name
local pattern = invisible_char[2]; -- the pattern used to find it
position, _, capture = mw.ustring.find (v, pattern); -- see if the parameter value contains characters that match the pattern
if position and (cfg.invisible_defs.zwj == capture) then -- if we found a zero-width joiner character
if mw.ustring.find (v, cfg.indic_script) then -- it's ok if one of the Indic scripts
position = nil; -- unset position
elseif cfg.emoji[mw.ustring.codepoint (v, position+1)] then -- is zwj followed by a character listed in emoji{}?
position = nil; -- unset position
end
end
if position then
if 'nowiki' == capture or 'math' == capture or -- nowiki and math stripmarkers (not an error condition)
('templatestyles' == capture and utilities.in_array (param, {'id', 'quote'})) then -- templatestyles stripmarker allowed in these parameters
stripmarker = true; -- set a flag
elseif true == stripmarker and cfg.invisible_defs.del == capture then -- because stripmakers begin and end with the delete char, assume that we've found one end of a stripmarker
position = nil; -- unset
else
local err_msg;
if capture and not (cfg.invisible_defs.del == capture or cfg.invisible_defs.zwj == capture) then
err_msg = capture .. ' ' .. char_name;
else
err_msg = char_name .. ' ' .. 'character';
end
 
table.insert (z.message_tail, {utilities.set_message ('err_invisible_char', {err_msg, utilities.wrap_style ('parameter', param), position}, true)}); -- add error message
return; -- and done with this parameter
end
end
end
end
 
 
--[[-------------------< A R G U M E N T _ W R A P P E R >----------------------
 
Argument wrapper.  This function provides support for argument mapping defined
in the configuration file so that multiple names can be transparently aliased to
single internal variable.
 
]]
 
local function argument_wrapper ( args )
local origin = {};
return setmetatable({
ORIGIN = function ( self, k )
local dummy = self[k]; -- force the variable to be loaded.
return origin[k];
end
},
{
__index = function ( tbl, k )
if origin[k] ~= nil then
return nil;
end
local args, list, v = args, cfg.aliases[k];
if type( list ) == 'table' then
v, origin[k] = utilities.select_one ( args, list, 'err_redundant_parameters' );
if origin[k] == nil then
origin[k] = ''; -- Empty string, not nil
end
elseif list ~= nil then
v, origin[k] = args[list], list;
else
-- maybe let through instead of raising an error?
-- v, origin[k] = args[k], k;
error( cfg.messages['unknown_argument_map'] .. ': ' .. k);
end
-- Empty strings, not nil;
if v == nil then
v = '';
origin[k] = '';
end
tbl = rawset( tbl, k, v );
return v;
end,
});
end
 
 
--[[--------------------------< N O W R A P _ D A T E >-------------------------
 
When date is YYYY-MM-DD format wrap in nowrap span: <span ...>YYYY-MM-DD</span>.
When date is DD MMMM YYYY or is MMMM DD, YYYY then wrap in nowrap span:
<span ...>DD MMMM</span> YYYY or <span ...>MMMM DD,</span> YYYY
 
DOES NOT yet support MMMM YYYY or any of the date ranges.
 
]]
 
local function nowrap_date (date)
local cap = '';
local cap2 = '';
 
if date:match("^%d%d%d%d%-%d%d%-%d%d$") then
date = utilities.substitute (cfg.presentation['nowrap1'], date);
This code now prevents that by inserting a hyphen at the issn midpoint. It also validates the issn for length and makes sure that the checkdigit agrees
elseif date:match("^%a+%s*%d%d?,%s+%d%d%d%d$") or date:match ("^%d%d?%s*%a+%s+%d%d%d%d$") then
with the calculated value. Incorrect length (8 digits), characters other than 0-9 and X, or checkdigit / calculated value mismatch will all cause a check issn
cap, cap2 = string.match (date, "^(.*)%s+(%d%d%d%d)$");
error message.  The issn is always displayed with a hyphen, even if the issn was given as a single group of 8 digits.
date = utilities.substitute (cfg.presentation['nowrap2'], {cap, cap2});
end
return date;
end
 
 
--[[--------------------------< S E T _ T I T L E T Y P E >---------------------
 
This function sets default title types (equivalent to the citation including
|type=<default value>) for those templates that have defaults. Also handles the
special case where it is desirable to omit the title type from the rendered citation
(|type=none).
 
]]
]]
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 handler = cfg.id_handlers['ISSN'];
local temp = 0;
local text;
local valid_issn = true;


id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and ndashes from the issn
local function set_titletype (cite_class, title_type)
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 utilities.is_set (title_type) then
if 'none' == cfg.keywords_xlate[title_type] then
title_type = ''; -- if |type=none then type parameter not displayed
end
return title_type; -- if |type= has been set to any other value use that value
end
 
return cfg.title_types [cite_class] or ''; -- set template's default title type; else empty string for concatenation
end
 
 
--[[--------------------------< H Y P H E N _ T O _ D A S H >--------------------------------------------------
 
Converts a hyphen to a dash under certain conditions.  The hyphen must separate
like items; unlike items are returned unmodified.  These forms are modified:
letter - letter (A - B)
digit - digit (4-5)
digit separator digit - digit separator digit (4.1-4.5 or 4-1-4-5)
letterdigit - letterdigit (A1-A5) (an optional separator between letter and
digit is supported – a.1-a.5 or a-1-a-5)
digitletter - digitletter (5a - 5d) (an optional separator between letter and
digit is supported – 5.a-5.d or 5-a-5-d)
 
any other forms are returned unmodified.
 
str may be a comma- or semicolon-separated list
 
]]
 
local function hyphen_to_dash( str )
if not utilities.is_set (str) then
return str;
end
 
local accept; -- Boolean
 
str = str:gsub ('&[nm]dash;', {['&ndash;'] = '–', ['&mdash;'] = '—'}); -- replace &mdash; and &ndash; entities with their characters; semicolon mucks up the text.split
str = str:gsub ('&#45;', '-'); -- replace HTML numeric entity with hyphen character
 
str = str:gsub ('&nbsp;', ' '); -- replace &nbsp; entity with generic keyboard space character
local out = {};
local list = mw.text.split (str, '%s*[,;]%s*'); -- split str at comma or semicolon separators if there are any
 
for _, item in ipairs (list) do -- for each item in the list
item, accept = utilities.has_accept_as_written (item); -- remove accept-this-as-written markup when it wraps all of item
if not accept and mw.ustring.match (item, '^%w*[%.%-]?%w+%s*[%-–—]%s*%w*[%.%-]?%w+$') then -- if a hyphenated range or has endash or emdash separators
if item:match ('^%a+[%.%-]?%d+%s*%-%s*%a+[%.%-]?%d+$') or -- letterdigit hyphen letterdigit (optional separator between letter and digit)
item:match ('^%d+[%.%-]?%a+%s*%-%s*%d+[%.%-]?%a+$') or -- digitletter hyphen digitletter (optional separator between digit and letter)
item:match ('^%d+[%.%-]%d+%s*%-%s*%d+[%.%-]%d+$') or -- digit separator digit hyphen digit separator digit
item:match ('^%d+%s*%-%s*%d+$') or -- digit hyphen digit
item:match ('^%a+%s*%-%s*%a+$') then -- letter hyphen letter
item = item:gsub ('(%w*[%.%-]?%w+)%s*%-%s*(%w*[%.%-]?%w+)', '%1–%2'); -- replace hyphen, remove extraneous space characters
else
item = mw.ustring.gsub (item, '%s*[–—]%s*', '–'); -- for endash or emdash separated ranges, replace em with en, remove extraneous whitespace
end
end
table.insert (out, item); -- add the (possibly modified) item to the output table
end


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
local temp_str = ''; -- concatenate the output table into a comma separated string
valid_issn=false; -- wrong length or improper character
temp_str, accept = utilities.has_accept_as_written (table.concat (out, ', ')); -- remove accept-this-as-written markup when it wraps all of concatenated out
if accept then
temp_str = utilities.has_accept_as_written (str); -- when global markup removed, return original str; do it this way to suppress boolean second return value
return temp_str;
else
else
id = { id:byte(1, 8) }; -- table of individual bytes
return temp_str; -- else, return assembled temp_str
for i, v in ipairs( id ) do -- loop through all of the byte an calculate the checksum
end
if v == string.byte( "X" ) then -- if checkdigit is X
end
temp = temp + 10*( 9 - i ); -- it represents 10 decimal
 
 
--[[--------------------------< S A F E _ J O I N >-----------------------------
 
Joins a sequence of strings together while checking for duplicate separation characters.
 
]]
 
local function safe_join( tbl, duplicate_char )
local f = {}; -- create a function table appropriate to type of 'duplicate character'
if 1 == #duplicate_char then -- for single byte ASCII characters use the string library functions
f.gsub = string.gsub
f.match = string.match
f.sub = string.sub
else -- for multi-byte characters use the ustring library functions
f.gsub = mw.ustring.gsub
f.match = mw.ustring.match
f.sub = mw.ustring.sub
end
 
local str = ''; -- the output string
local comp = ''; -- what does 'comp' mean?
local end_chr = '';
local trim;
for _, value in ipairs( tbl ) do
if value == nil then value = ''; end
if str == '' then -- if output string is empty
str = value; -- assign value to it (first time through the loop)
elseif value ~= '' then
if value:sub(1, 1) == '<' then -- special case of values enclosed in spans and other markup.
comp = value:gsub( "%b<>", "" ); -- remove HTML markup (<span>string</span> -> string)
else
comp = value;
end
-- typically duplicate_char is sepc
if f.sub(comp, 1, 1) == duplicate_char then -- is first character same as duplicate_char? why test first character?
--  Because individual string segments often (always?) begin with terminal punct for the
--  preceding segment: 'First element' .. 'sepc next element' .. etc.?
trim = false;
end_chr = f.sub(str, -1, -1); -- get the last character of the output string
-- str = str .. "<HERE(enchr=" .. end_chr .. ")" -- debug stuff?
if end_chr == duplicate_char then -- if same as separator
str = f.sub(str, 1, -2); -- remove it
elseif end_chr == "'" then -- if it might be wiki-markup
if f.sub(str, -3, -1) == duplicate_char .. "''" then -- if last three chars of str are sepc''
str = f.sub(str, 1, -4) .. "''"; -- remove them and add back ''
elseif  f.sub(str, -5, -1) == duplicate_char .. "]]''" then -- if last five chars of str are sepc]]''
trim = true; -- why? why do this and next differently from previous?
elseif f.sub(str, -4, -1) == duplicate_char .. "]''" then -- if last four chars of str are sepc]''
trim = true; -- same question
end
elseif end_chr == "]" then -- if it might be wiki-markup
if f.sub(str, -3, -1) == duplicate_char .. "]]" then -- if last three chars of str are sepc]] wikilink
trim = true;
elseif f.sub(str, -3, -1) == duplicate_char .. '"]' then -- if last three chars of str are sepc"] quoted external link
trim = true;
elseif  f.sub(str, -2, -1) == duplicate_char .. "]" then -- if last two chars of str are sepc] external link
trim = true;
elseif f.sub(str, -4, -1) == duplicate_char .. "'']" then -- normal case when |url=something & |title=Title.
trim = true;
end
elseif end_chr == " " then -- if last char of output string is a space
if f.sub(str, -2, -1) == duplicate_char .. " " then -- if last two chars of str are <sepc><space>
str = f.sub(str, 1, -3); -- remove them both
end
end
 
if trim then
if value ~= comp then -- value does not equal comp when value contains HTML markup
local dup2 = duplicate_char;
if f.match(dup2, "%A" ) then dup2 = "%" .. dup2; end -- if duplicate_char not a letter then escape it
value = f.gsub(value, "(%b<>)" .. dup2, "%1", 1 ) -- remove duplicate_char if it follows HTML markup
else
value = f.sub(value, 2, -1 ); -- remove duplicate_char when it is first character
end
end
end
str = str .. value; -- add it to the output string
end
end
return str;
end
 
 
--[[--------------------------< I S _ S U F F I X >-----------------------------
 
returns true is suffix is properly formed Jr, Sr, or ordinal in the range 1–9.
Puncutation not allowed.
 
]]
 
local function is_suffix (suffix)
if utilities.in_array (suffix, {'Jr', 'Sr', 'Jnr', 'Snr', '1st', '2nd', '3rd'}) or suffix:match ('^%dth$') then
return true;
end
return false;
end
 
 
--[[--------------------< I S _ G O O D _ V A N C _ N A M E >-------------------
 
For Vancouver style, author/editor names are supposed to be rendered in Latin
(read ASCII) characters.  When a name uses characters that contain diacritical
marks, those characters are to be converted to the corresponding Latin
character. When a name is written using a non-Latin alphabet or logogram, that
name is to be transliterated into Latin characters. The module doesn't do this
so editors may/must.
 
This test allows |first= and |last= names to contain any of the letters defined
in the four Unicode Latin character sets
[http://www.unicode.org/charts/PDF/U0000.pdf C0 Controls and Basic Latin] 0041–005A, 0061–007A
[http://www.unicode.org/charts/PDF/U0080.pdf C1 Controls and Latin-1 Supplement] 00C0–00D6, 00D8–00F6, 00F8–00FF
[http://www.unicode.org/charts/PDF/U0100.pdf Latin Extended-A] 0100–017F
[http://www.unicode.org/charts/PDF/U0180.pdf Latin Extended-B] 0180–01BF, 01C4–024F
 
|lastn= also allowed to contain hyphens, spaces, and apostrophes.
(http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35029/)
|firstn= also allowed to contain hyphens, spaces, apostrophes, and periods
 
This original test:
if nil == mw.ustring.find (last, "^[A-Za-zÀ-ÖØ-öø-ƿDŽ-ɏ%-%s%']*$")
or nil == mw.ustring.find (first, "^[A-Za-zÀ-ÖØ-öø-ƿDŽ-ɏ%-%s%'%.]+[2-6%a]*$") then
was written outside of the code editor and pasted here because the code editor
gets confused between character insertion point and cursor position. The test has
been rewritten to use decimal character escape sequence for the individual bytes
of the Unicode characters so that it is not necessary to use an external editor
to maintain this code.
 
\195\128-\195\150 – À-Ö (U+00C0–U+00D6 – C0 controls)
\195\152-\195\182 – Ø-ö (U+00D8-U+00F6 – C0 controls)
\195\184-\198\191 – ø-ƿ (U+00F8-U+01BF – C0 controls, Latin extended A & B)
\199\132-\201\143 – DŽ-ɏ (U+01C4-U+024F – Latin extended B)
 
]]
 
local function is_good_vanc_name (last, first, suffix, position)
if not suffix then
if first:find ('[,%s]') then -- when there is a space or comma, might be first name/initials + generational suffix
first = first:match ('(.-)[,%s]+'); -- get name/initials
suffix = first:match ('[,%s]+(.+)$'); -- get generational suffix
end
end
if utilities.is_set (suffix) then
if not is_suffix (suffix) then
add_vanc_error (cfg.err_msg_supl.suffix, position);
return false; -- not a name with an appropriate suffix
end
end
if nil == mw.ustring.find (last, "^[A-Za-z\195\128-\195\150\195\152-\195\182\195\184-\198\191\199\132-\201\143%-%s%']*$") or
nil == mw.ustring.find (first, "^[A-Za-z\195\128-\195\150\195\152-\195\182\195\184-\198\191\199\132-\201\143%-%s%'%.]*$") then
add_vanc_error (cfg.err_msg_supl['non-Latin char'], position);
return false; -- not a string of Latin characters; Vancouver requires Romanization
end;
return true;
end
 
 
--[[--------------------------< R E D U C E _ T O _ I N I T I A L S >------------------------------------------
 
Attempts to convert names to initials in support of |name-list-style=vanc. 
 
Names in |firstn= may be separated by spaces or hyphens, or for initials, a period.
See http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35062/.
 
Vancouver style requires family rank designations (Jr, II, III, etc.) to be rendered
as Jr, 2nd, 3rd, etc.  See http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35085/.
This code only accepts and understands generational suffix in the Vancouver format
because Roman numerals look like, and can be mistaken for, initials.
 
This function uses ustring functions because firstname initials may be any of the
Unicode Latin characters accepted by is_good_vanc_name ().
 
]]
 
local function reduce_to_initials(first, position)
local name, suffix = mw.ustring.match(first, "^(%u+) ([%dJS][%drndth]+)$");
 
if not name then -- if not initials and a suffix
name = mw.ustring.match(first, "^(%u+)$"); -- is it just initials?
end
 
if name then -- if first is initials with or without suffix
if 3 > mw.ustring.len (name) then -- if one or two initials
if suffix then -- if there is a suffix
if is_suffix (suffix) then -- is it legitimate?
return first; -- one or two initials and a valid suffix so nothing to do
else
add_vanc_error (cfg.err_msg_supl.suffix, position); -- one or two initials with invalid suffix so error message
return first; -- and return first unmolested
end
else
else
temp = temp + tonumber( string.char(v) )*(9-i);
return first; -- one or two initials without suffix; nothing to do
end
end
end
end
valid_issn = temp % 11 == 0; -- checksum must be zero for valid issn
end -- if here then name has 3 or more uppercase letters so treat them as a word
 
local initials, names = {}, {}; -- tables to hold name parts and initials
local i = 1; -- counter for number of initials
 
names = mw.text.split (first, '[%s,]+'); -- split into a table of names and possible suffix
 
while names[i] do -- loop through the table
if 1 < i and names[i]:match ('[%dJS][%drndth]+%.?$') then -- if not the first name, and looks like a suffix (may have trailing dot)
names[i] = names[i]:gsub ('%.', ''); -- remove terminal dot if present
if is_suffix (names[i]) then -- if a legitimate suffix
table.insert (initials, ' ' .. names[i]); -- add a separator space, insert at end of initials table
break; -- and done because suffix must fall at the end of a name
end -- no error message if not a suffix; possibly because of Romanization
end
if 3 > i then
table.insert (initials, mw.ustring.sub(names[i], 1, 1)); -- insert the initial at end of initials table
end
i = i + 1; -- bump the counter
end
end
return table.concat(initials) -- Vancouver format does not include spaces.
end


if true == valid_issn then
 
id = clean_issn; -- if valid, use the cleaned-up version for the display
--[[--------------------------< L I S T _ P E O P L E >--------------------------
 
Formats a list of people (authors, contributors, editors, interviewers, translators)
 
names in the list will be linked when
|<name>-link= has a value
|<name>-mask- does NOT have a value; masked names are presumed to have been
rendered previously so should have been linked there
 
when |<name>-mask=0, the associated name is not rendered
 
]]
 
local function list_people (control, people, etal)
local sep;
local namesep;
local format = control.format;
local maximum = control.maximum;
local name_list = {};
 
if 'vanc' == format then -- Vancouver-like name styling?
sep = cfg.presentation['sep_nl_vanc']; -- name-list separator between names is a comma
namesep = cfg.presentation['sep_name_vanc']; -- last/first separator is a space
else
else
id = issn_copy; -- if not valid, use the show the invalid issn with error message
sep = cfg.presentation['sep_nl']; -- name-list separator between names is a semicolon
namesep = cfg.presentation['sep_name']; -- last/first separator is <comma><space>
end
end
text = externallinkid({link = handler.link, label = handler.label,
if sep:sub (-1, -1) ~= " " then sep = sep .. " " end
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
if utilities.is_set (maximum) and maximum < 1 then return "", 0; end -- returned 0 is for EditorCount; not used for other names
if false == valid_issn then
for i, person in ipairs (people) do
text = text .. ' ' .. seterror( 'bad_issn' ) -- add an error message if the issn is invalid
if utilities.is_set (person.last) then
end  
local mask = person.mask;
local one;
local sep_one = sep;
 
if utilities.is_set (maximum) and i > maximum then
etal = true;
break;
end
if mask then
local n = tonumber (mask); -- convert to a number if it can be converted; nil else
if n then
one = 0 ~= n and string.rep("&mdash;", n) or nil; -- make a string of (n > 0) mdashes, nil else, to replace name
person.link = nil; -- don't create link to name if name is replaces with mdash string or has been set nil
else
one = mask; -- replace name with mask text (must include name-list separator)
sep_one = " "; -- modify name-list separator
end
else
one = person.last; -- get surname
local first = person.first -- get given name
if utilities.is_set (first) then
if ("vanc" == format) then -- if Vancouver format
one = one:gsub ('%.', ''); -- remove periods from surnames (http://www.ncbi.nlm.nih.gov/books/NBK7271/box/A35029/)
if not person.corporate and is_good_vanc_name (one, first, nil, i) then -- and name is all Latin characters; corporate authors not tested
first = reduce_to_initials (first, i); -- attempt to convert first name(s) to initials
end
end
one = one .. namesep .. first;
end
end
if utilities.is_set (person.link) then
one = utilities.make_wikilink (person.link, one); -- link author/editor
end
if one then -- if <one> has a value (name, mdash replacement, or mask text replacement)
table.insert (name_list, one); -- add it to the list of names
table.insert (name_list, sep_one); -- add the proper name-list separator
end
end
end
 
local count = #name_list / 2; -- (number of names + number of separators) divided by 2
if 0 < count then
if 1 < count and not etal then
if 'amp' == format then
name_list[#name_list-2] = " & "; -- replace last separator with ampersand text
elseif 'and' == format then
if 2 == count then
name_list[#name_list-2] = cfg.presentation.sep_nl_and; -- replace last separator with 'and' text
else
name_list[#name_list-2] = cfg.presentation.sep_nl_end; -- replace last separator with '(sep) and' text
end
end
end
name_list[#name_list] = nil; -- erase the last separator
end
 
local result = table.concat (name_list); -- construct list
if etal and utilities.is_set (result) then -- etal may be set by |display-authors=etal but we might not have a last-first list
result = result .. sep .. ' ' .. cfg.messages['et al']; -- we've got a last-first list and etal so add et al.
end
return text
return result, count; -- return name-list string and count of number of names (count used for editor names only)
end
 
--[[--------------------< M A K E _ C I T E R E F _ I D >-----------------------
 
Generates a CITEREF anchor ID if we have at least one name or a date.  Otherwise
returns an empty string.
 
namelist is one of the contributor-, author-, or editor-name lists chosen in that
order.  year is Year or anchor_year.
 
]]
 
local function make_citeref_id (namelist, year)
local names={}; -- a table for the one to four names and year
for i,v in ipairs (namelist) do -- loop through the list and take up to the first four last names
names[i] = v.last
if i == 4 then break end -- if four then done
end
table.insert (names, year); -- add the year at the end
local id = table.concat(names); -- concatenate names and year for CITEREF id
if utilities.is_set (id) then -- if concatenation is not an empty string
return "CITEREF" .. id; -- add the CITEREF portion
else
return ''; -- return an empty string; no reason to include CITEREF id in this citation
end
end
 
 
--[[---------------------< N A M E _ H A S _ E T A L >--------------------------
 
Evaluates the content of name parameters (author, editor, etc.) for variations on
the theme of et al.  If found, the et al. is removed, a flag is set to true and
the function returns the modified name and the flag.
 
This function never sets the flag to false but returns its previous state because
it may have been set by previous passes through this function or by the associated
|display-<names>=etal parameter
 
]]
 
local function name_has_etal (name, etal, nocat, param)
 
if utilities.is_set (name) then -- name can be nil in which case just return
local patterns = cfg.et_al_patterns; -- get patterns from configuration
for _, pattern in ipairs (patterns) do -- loop through all of the patterns
if name:match (pattern) then -- if this 'et al' pattern is found in name
name = name:gsub (pattern, ''); -- remove the offending text
etal = true; -- set flag (may have been set previously here or by |display-<names>=etal)
if not nocat then -- no categorization for |vauthors=
table.insert( z.message_tail, {utilities.set_message ('err_etal', {param})}); -- and set an error if not added
end
end
end
end
 
return name, etal;
end
 
 
--[[---------------------< N A M E _ I S _ N U M E R I C >----------------------
 
Add maint cat when name parameter value does not contain letters.  Does not catch
mixed alphanumeric names so |last=A. Green (1922-1987) does not get caught in the
current version of this test but |first=(1888) is caught.
 
returns nothing
 
]]
 
local function name_is_numeric (name, list_name)
if utilities.is_set (name) then
if mw.ustring.match (name, '^[%A]+$') then -- when name does not contain any letters
utilities.set_message ('maint_numeric_names', cfg.special_case_translation [list_name]); -- add a maint cat for this template
end
end
end
 
 
--[[-------------------< N A M E _ H A S _ E D _ M A R K U P >------------------
 
Evaluates the content of author and editor parameters for extraneous editor annotations:
ed, ed., eds, (Ed.), etc. These annotations do not belong in author parameters and
are redundant in editor parameters.  If found, the function adds the editor markup
maintenance category.
 
returns nothing
 
]]
 
local function name_has_ed_markup (name, list_name)
local patterns = cfg.editor_markup_patterns; -- get patterns from configuration
 
if utilities.is_set (name) then
for _, pattern in ipairs (patterns) do -- spin through patterns table and
if name:match (pattern) then
utilities.set_message ('maint_extra_text_names', cfg.special_case_translation [list_name]); -- add a maint cat for this template
break;
end
end
end
end
 
 
--[[-----------------< N A M E _ H A S _ M U L T _ N A M E S >------------------
 
Evaluates the content of last/surname (authors etc.) parameters for multiple names.
Multiple names are indicated if there is more than one comma or any "unescaped"
semicolons. Escaped semicolons are ones used as part of selected HTML entities.
If the condition is met, the function adds the multiple name maintenance category.
 
returns nothing
 
]]
 
local function name_has_mult_names (name, list_name)
local _, commas, semicolons, nbsps;
if utilities.is_set (name) then
_, commas = name:gsub (',', ''); -- count the number of commas
_, semicolons = name:gsub (';', ''); -- count the number of semicolons
-- nbsps probably should be its own separate count rather than merged in
-- some way with semicolons because Lua patterns do not support the
-- grouping operator that regex does, which means there is no way to add
-- more entities to escape except by adding more counts with the new
-- entities
_, nbsps = name:gsub ('&nbsp;',''); -- count nbsps
-- There is exactly 1 semicolon per &nbsp; entity, so subtract nbsps
-- from semicolons to 'escape' them. If additional entities are added,
-- they also can be subtracted.
if 1 < commas or 0 < (semicolons - nbsps) then
utilities.set_message ('maint_mult_names', cfg.special_case_translation [list_name]); -- add a maint message
end
end
end
end




--[[
--[[------------------------< N A M E _ C H E C K S >---------------------------
Determines whether an URL string is valid
 
This function calls various name checking functions used to validate the content
of the various name-holding parameters.


At present the only check is whether the string appears to
be prefixed with a URI scheme.  It is not determined whether
the URI scheme is valid or whether the URL is otherwise well
formed.
]]
]]
function checkurl( url_str )
 
    -- Protocol-relative or URL scheme
local function name_checks (last, first, list_name)
    return url_str:sub(1,2) == "//" or url_str:match( "^[^/]*:" ) ~= nil;
local accept_name;
 
if utilities.is_set (last) then
last, accept_name = utilities.has_accept_as_written (last); -- remove accept-this-as-written markup when it wraps all of <last>
if not accept_name then -- <last> not wrapped in accept-as-written markup
name_has_mult_names (last, list_name); -- check for multiple names in the parameter (last only)
name_has_ed_markup (last, list_name); -- check for extraneous 'editor' annotation
name_is_numeric (last, list_name); -- check for names that are composed of digits and punctuation
end
end
 
if utilities.is_set (first) then
first, accept_name = utilities.has_accept_as_written (first); -- remove accept-this-as-written markup when it wraps all of <first>
 
if not accept_name then -- <first> not wrapped in accept-as-written markup
name_has_ed_markup (first, list_name); -- check for extraneous 'editor' annotation
name_is_numeric (first, list_name); -- check for names that are composed of digits and punctuation
end
end
 
return last, first; -- done
end
end


-- Removes irrelevant text and dashes from ISBN number
 
-- Similar to that used for Special:BookSources
--[[----------------------< E X T R A C T _ N A M E S >-------------------------
function cleanisbn( isbn_str )
Gets name list from the input arguments
    return isbn_str:gsub( "[^-0-9X]", "" );
 
Searches through args in sequential order to find |lastn= and |firstn= parameters
(or their aliases), and their matching link and mask parameters. Stops searching
when both |lastn= and |firstn= are not found in args after two sequential attempts:
found |last1=, |last2=, and |last3= but doesn't find |last4= and |last5= then the
search is done.
 
This function emits an error message when there is a |firstn= without a matching
|lastn=.  When there are 'holes' in the list of last names, |last1= and |last3=
are present but |last2= is missing, an error message is emitted. |lastn= is not
required to have a matching |firstn=.
 
When an author or editor parameter contains some form of 'et al.', the 'et al.'
is stripped from the parameter and a flag (etal) returned that will cause list_people()
to add the static 'et al.' text from Module:Citation/CS1/Configuration.  This keeps
'et al.' out of the template's metadata.  When this occurs, an error is emitted.
 
]]
 
local function extract_names(args, list_name)
local names = {}; -- table of names
local last; -- individual name components
local first;
local link;
local mask;
local i = 1; -- loop counter/indexer
local n = 1; -- output table indexer
local count = 0; -- used to count the number of times we haven't found a |last= (or alias for authors, |editor-last or alias for editors)
local etal = false; -- return value set to true when we find some form of et al. in an author parameter
 
local last_alias, first_alias, link_alias; -- selected parameter aliases used in error messaging
while true do
last, last_alias = utilities.select_one ( args, cfg.aliases[list_name .. '-Last'], 'err_redundant_parameters', i ); -- search through args for name components beginning at 1
first, first_alias = utilities.select_one ( args, cfg.aliases[list_name .. '-First'], 'err_redundant_parameters', i );
link, link_alias = utilities.select_one ( args, cfg.aliases[list_name .. '-Link'], 'err_redundant_parameters', i );
mask = utilities.select_one ( args, cfg.aliases[list_name .. '-Mask'], 'err_redundant_parameters', i );
 
last, etal = name_has_etal (last, etal, false, last_alias); -- find and remove variations on et al.
first, etal = name_has_etal (first, etal, false, first_alias); -- find and remove variations on et al.
last, first = name_checks (last, first, list_name); -- multiple names, extraneous annotation, etc. checks
if first and not last then -- if there is a firstn without a matching lastn
local alias = first_alias:find ('given', 1, true) and 'given' or 'first'; -- get first or given form of the alias
table.insert (z.message_tail, { utilities.set_message ( 'err_first_missing_last', {
first_alias, -- param name of alias missing its mate
first_alias:gsub (alias, {['first'] = 'last', ['given'] = 'surname'}), -- make param name appropriate to the alias form
}, true ) } ); -- add this error message
elseif not first and not last then -- if both firstn and lastn aren't found, are we done?
count = count + 1; -- number of times we haven't found last and first
if 2 <= count then -- two missing names and we give up
break; -- normal exit or there is a two-name hole in the list; can't tell which
end
else -- we have last with or without a first
local result;
link = link_title_ok (link, link_alias, last, last_alias); -- check for improper wiki-markup
if first then
link = link_title_ok (link, link_alias, first, first_alias); -- check for improper wiki-markup
end
 
names[n] = {last = last, first = first, link = link, mask = mask, corporate = false}; -- add this name to our names list (corporate for |vauthors= only)
n = n + 1; -- point to next location in the names table
if 1 == count then -- if the previous name was missing
table.insert( z.message_tail, { utilities.set_message ( 'err_missing_name', {list_name:match ("(%w+)List"):lower(), i - 1}, true ) } ); -- add this error message
end
count = 0; -- reset the counter, we're looking for two consecutive missing names
end
i = i + 1; -- point to next args location
end
return names, etal; -- all done, return our list of names and the etal flag
end
 
 
--[[---------------------< G E T _ I S O 6 3 9 _ C O D E >----------------------
 
Validates language names provided in |language= parameter if not an ISO639-1 or 639-2 code.
 
Returns the language name and associated two- or three-character code.  Because
case of the source may be incorrect or different from the case that WikiMedia uses,
the name comparisons are done in lower case and when a match is found, the Wikimedia
version (assumed to be correct) is returned along with the code.  When there is no
match, we return the original language name string.
 
mw.language.fetchLanguageNames(<local wiki language>, 'all') returns a list of
languages that in some cases may include extensions. For example, code 'cbk-zam'
and its associated name 'Chavacano de Zamboanga' (MediaWiki does not support
code 'cbk' or name 'Chavacano'.  Most (all?) of these languages are not used a
'language' codes per se, rather they are used as sub-domain names: cbk-zam.wikipedia.org.
A list of language names and codes supported by fetchLanguageNames() can be found
at Template:Citation Style documentation/language/doc
 
Names that are included in the list will be found if that name is provided in the
|language= parameter.  For example, if |language=Chavacano de Zamboanga, that name
will be found with the associated code 'cbk-zam'.  When names are found and the
associated code is not two or three characters, this function returns only the
WikiMedia language name.
 
Some language names have multiple entries under different codes:
Aromanian has code rup and code roa-rup
When this occurs, this function returns the language name and the 2- or 3-character code
 
Adapted from code taken from Module:Check ISO 639-1.
 
]]
 
local function get_iso639_code (lang, this_wiki_code)
if cfg.lang_name_remap[lang:lower()] then -- if there is a remapped name (because MediaWiki uses something that we don't think is correct)
return cfg.lang_name_remap[lang:lower()][1], cfg.lang_name_remap[lang:lower()][2]; -- for this language 'name', return a possibly new name and appropriate code
end
 
local ietf_code; -- because some languages have both IETF-like codes and ISO 639-like codes
local ietf_name;
local langlc = mw.ustring.lower (lang); -- lower-case version for comparisons
 
for code, name in pairs (cfg.languages) do -- scan the list to see if we can find our language
if langlc == mw.ustring.lower (name) then
if 2 == #code or 3 == #code then -- two- or three-character codes only; IETF extensions not supported
return name, code; -- so return the name and the code
end
ietf_code = code; -- remember that we found an IETF-like code and save its name
ietf_name = name; -- but keep looking for a 2- or 3-char code
end
end
-- didn't find name with 2- or 3-char code; if IETF-like code found return
return ietf_code and ietf_name or lang; -- associated name; return original language text else
end
end


-- Determines whether an ISBN string is valid
 
function checkisbn( isbn_str )
--[[-------------------< L A N G U A G E _ P A R A M E T E R >------------------
    isbn_str = cleanisbn( isbn_str ):gsub( "-", "" );
 
    local len = isbn_str:len();
Gets language name from a provided two- or three-character ISO 639 code.  If a code
is recognized by MediaWiki, use the returned name; if not, then use the value that
was provided with the language parameter.
 
When |language= contains a recognized language (either code or name), the page is
assigned to the category for that code: Category:Norwegian-language sources (no).
For valid three-character code languages, the page is assigned to the single category
for '639-2' codes: Category:CS1 ISO 639-2 language sources.
 
Languages that are the same as the local wiki are not categorized.  MediaWiki does
not recognize three-character equivalents of two-character codes: code 'ar' is
recognized but code 'ara' is not.
 
This function supports multiple languages in the form |language=nb, French, th
where the language names or codes are separated from each other by commas with
optional space characters.
 
]]
 
local function language_parameter (lang)
local code; -- the two- or three-character language code
local name; -- the language name
local language_list = {}; -- table of language names to be rendered
local names_table = {}; -- table made from the value assigned to |language=
 
local this_wiki_name = mw.language.fetchLanguageName (cfg.this_wiki_code, cfg.this_wiki_code); -- get this wiki's language name
 
names_table = mw.text.split (lang, '%s*,%s*'); -- names should be a comma separated list
 
for _, lang in ipairs (names_table) do -- reuse lang
name = cfg.lang_code_remap[lang:lower()]; -- first see if this is a code that is not supported by MediaWiki but is in remap
 
if name then -- there was a remapped code so
if not lang:match ('^%a%a%a?%-x%-%a+$') then -- if not a private IETF tag
lang = lang:gsub ('^(%a%a%a?)%-.*', '%1'); -- strip IETF tags from code
end
else
lang = lang:gsub ('^(%a%a%a?)%-.*', '%1'); -- strip any IETF-like tags from code
if 2 == lang:len() or 3 == lang:len() then -- if two-or three-character code
name = mw.language.fetchLanguageName (lang:lower(), cfg.this_wiki_code); -- get language name if |language= is a proper code
end
end
 
if utilities.is_set (name) then -- if |language= specified a valid code
code = lang:lower(); -- save it
else
name, code = get_iso639_code (lang, cfg.this_wiki_code); -- attempt to get code from name (assign name here so that we are sure of proper capitalization)
end
if utilities.is_set (code) then -- only 2- or 3-character codes
name = cfg.lang_code_remap[code] or name; -- override wikimedia when they misuse language codes/names
 
if cfg.this_wiki_code ~= code then -- when the language is not the same as this wiki's language
if 2 == code:len() then -- and is a two-character code
utilities.add_prop_cat ('foreign_lang_source' .. code, {name, code}); -- categorize it; code appended to allow for multiple language categorization
else -- or is a recognized language (but has a three-character code)
utilities.add_prop_cat ('foreign_lang_source_2' .. code, {code}); -- categorize it differently TODO: support multiple three-character code categories per cs1|2 template
end
elseif cfg.local_lang_cat_enable then -- when the language and this wiki's language are the same and categorization is enabled
utilities.add_prop_cat ('local_lang_source', {name, code}); -- categorize it
end
else
utilities.set_message ('maint_unknown_lang'); -- add maint category if not already added
end
table.insert (language_list, name);
name = ''; -- so we can reuse it
end
   
   
    if len ~= 10 and len ~= 13 then
name = utilities.make_sep_list (#language_list, language_list);
        return false;
 
    end
if this_wiki_name == name then
return ''; -- if one language and that language is this wiki's return an empty string (no annotation)
    local temp = 0;
end
    if len == 10 then
return (" " .. wrap_msg ('language', name)); -- otherwise wrap with '(in ...)'
        if isbn_str:match( "^%d*X?$" ) == nil then return false; end
--[[ TODO: should only return blank or name rather than full list
        isbn_str = { isbn_str:byte(1, len) };
so we can clean up the bunched parenthetical elements Language, Type, Format
        for i, v in ipairs( isbn_str ) do
]]
            if v == string.byte( "X" ) then
end
                temp = temp + 10*( 11 - i );
 
            else
--[[-----------------------< S E T _ C S _ S T Y L E >--------------------------
                temp = temp + tonumber( string.char(v) )*(11-i);
Gets the default CS style configuration for the given mode.
            end
Returns default separator and either postscript as passed in or the default.
        end
In CS1, the default postscript and separator are '.'.
        return temp % 11 == 0;
In CS2, the default postscript is the empty string and the default separator is ','.
    else
]]
        if isbn_str:match( "^%d*$" ) == nil then return false; end
local function set_cs_style (postscript, mode)
        isbn_str = { isbn_str:byte(1, len) };
if utilities.is_set(postscript) then
        for i, v in ipairs( isbn_str ) do
-- emit a maintenance message if user postscript is the default cs1 postscript
            temp = temp + (3 - 2*(i % 2)) * tonumber( string.char(v) );
-- we catch the opposite case for cs2 in set_style
        end
if mode == 'cs1' and postscript == cfg.presentation['ps_' .. mode] then
        return temp % 10 == 0;
utilities.set_message ('maint_postscript');
    end
end
else
postscript = cfg.presentation['ps_' .. mode];
end
return cfg.presentation['sep_' .. mode], postscript;
end
end


-- Gets the display text for a wikilink like [[A|B]] or [[B]] gives B
--[[--------------------------< S E T _ S T Y L E >-----------------------------
function removewikilink( str )
Sets the separator and postscript styles. Checks the |mode= first and the
    return (str:gsub( "%[%[([^%[%]]*)%]%]", function(l)
#invoke CitationClass second. Removes the postscript if postscript == none.
        return l:gsub( "^[^|]*|(.*)$", "%1" ):gsub("^%s*(.-)%s*$", "%1");
]]
    end));
local function set_style (mode, postscript, cite_class)
local sep;
if 'cs2' == mode then
sep, postscript = set_cs_style (postscript, 'cs2');
elseif 'cs1' == mode then
sep, postscript = set_cs_style (postscript, 'cs1');
elseif 'citation' == cite_class then
sep, postscript = set_cs_style (postscript, 'cs2');
else
sep, postscript = set_cs_style (postscript, 'cs1');
end
 
if cfg.keywords_xlate[postscript:lower()] == 'none' then
-- emit a maintenance message if user postscript is the default cs2 postscript
-- we catch the opposite case for cs1 in set_cs_style
if 'cs2' == mode or 'citation' == cite_class then
utilities.set_message ('maint_postscript');
end
postscript = '';
end
return sep, postscript
end
end


-- Escape sequences for content that will be used for URL descriptions
--[=[-------------------------< I S _ P D F >-----------------------------------
function safeforurl( str )
 
    if str:match( "%[%[.-%]%]" ) ~= nil then
Determines if a URL has the file extension that is one of the PDF file extensions
        table.insert( z.message_tail, { seterror( 'wikilink_in_url', {}, true ) } );
used by [[MediaWiki:Common.css]] when applying the PDF icon to external links.
    end
 
   
returns true if file extension is one of the recognized extensions, else false
    return str:gsub( '[%[%]\n]', {   
 
        ['['] = '&#91;',
]=]
        [']'] = '&#93;',
 
        ['\n'] = ' ' } );
local function is_pdf (url)
return url:match ('%.pdf$') or url:match ('%.PDF$') or
url:match ('%.pdf[%?#]') or url:match ('%.PDF[%?#]') or
url:match ('%.PDF&#035') or url:match ('%.pdf&#035');
end
end


-- Converts a hyphen to a dash
 
function hyphentodash( str )
--[[--------------------------< S T Y L E _ F O R M A T >-----------------------
    if not is_set(str) or str:match( "[%[%]{}<>]" ) ~= nil then
 
        return str;
Applies CSS style to |format=, |chapter-format=, etc.  Also emits an error message
    end  
if the format parameter does not have a matching URL parameter.  If the format parameter
    return str:gsub( '-', '–' );
is not set and the URL contains a file extension that is recognized as a PDF document
by MediaWiki's commons.css, this code will set the format parameter to (PDF) with
the appropriate styling.
 
]]
 
local function style_format (format, url, fmt_param, url_param)
if utilities.is_set (format) then
format = utilities.wrap_style ('format', format); -- add leading space, parentheses, resize
if not utilities.is_set (url) then
format = format .. ' ' .. utilities.set_message ( 'err_format_missing_url', {fmt_param, url_param} ); -- add an error message
end
elseif is_pdf (url) then -- format is not set so if URL is a PDF file then
format = utilities.wrap_style ('format', 'PDF'); -- set format to PDF
else
format = ''; -- empty string for concatenation
end
return format;
end
end


-- Protects a string that will be wrapped in wiki italic markup '' ... ''
 
function safeforitalics( str )
--[[---------------------< G E T _ D I S P L A Y _ N A M E S >------------------
    --[[ 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
Returns a number that defines the number of names displayed for author and editor
    (i.e. unitalicized) in the resulting references. In addition, <i> and ''
name lists and a Boolean flag to indicate when et al. should be appended to the name list.
    tend to interact poorly under Mediawiki's HTML tidy. ]]
 
   
When the value assigned to |display-xxxxors= is a number greater than or equal to zero,
    if not is_set(str) then
return the number and the previous state of the 'etal' flag (false by default
        return str;
but may have been set to true if the name list contains some variant of the text 'et al.').
    else
 
        if str:sub(1,1) == "'" then str = "<span />" .. str; end
When the value assigned to |display-xxxxors= is the keyword 'etal', return a number
        if str:sub(-1,-1) == "'" then str = str .. "<span />"; end
that is one greater than the number of authors in the list and set the 'etal' flag true.
       
This will cause the list_people() to display all of the names in the name list followed by 'et al.'
        -- Remove newlines as they break italics.
 
        return str:gsub( '\n', ' ' );
In all other cases, returns nil and the previous state of the 'etal' flag.
    end
 
inputs:
max: A['DisplayAuthors'] or A['DisplayEditors']; a number or some flavor of etal
count: #a or #e
list_name: 'authors' or 'editors'
etal: author_etal or editor_etal
 
]]
 
local function get_display_names (max, count, list_name, etal, param)
if utilities.is_set (max) then
if 'etal' == max:lower():gsub("[ '%.]", '') then -- the :gsub() portion makes 'etal' from a variety of 'et al.' spellings and stylings
max = count + 1; -- number of authors + 1 so display all author name plus et al.
etal = true; -- overrides value set by extract_names()
elseif max:match ('^%d+$') then -- if is a string of numbers
max = tonumber (max); -- make it a number
if max >= count then -- if |display-xxxxors= value greater than or equal to number of authors/editors
table.insert( z.message_tail, {utilities.set_message ('err_disp_name', {param, max}, true)}); -- add error message
max = nil;
end
else -- not a valid keyword or number
table.insert( z.message_tail, {utilities.set_message ('err_disp_name', {param, max}, true)}); -- add error message
max = nil; -- unset; as if |display-xxxxors= had not been set
end
end
return max, etal;
end
end


--[[
 
Joins a sequence of strings together while checking for duplicate separation
--[[----------< E X T R A _ T E X T _ I N _ P A G E _ C H E C K >---------------
characters.
 
Adds error if |page=, |pages=, |quote-page=, |quote-pages= has what appears to be
some form of p. or pp. abbreviation in the first characters of the parameter content.
 
check page for extraneous p, p., pp, pp., pg, pg. at start of parameter value:
good pattern: '^P[^%.P%l]' matches when page begins PX or P# but not Px
      where x and X are letters and # is a digit
bad pattern:  '^[Pp][PpGg]' matches when page begins pp, pP, Pp, PP, pg, pG, Pg, PG
 
]]
]]
function safejoin( tbl, duplicate_char )
    --[[
    Note: we use string functions here, rather than ustring functions.
   
    This has considerably faster performance and should work correctly as
    long as the duplicate_char is strict ASCII.  The strings
    in tbl may be ASCII or UTF8.
    ]]
   
    local str = '';
    local comp = '';
    local end_chr = '';
    local trim;
    for _, value in ipairs( tbl ) do
        if value == nil then value = ''; end
       
        if str == '' then
            str = value;
        elseif value ~= '' then
            if value:sub(1,1) == '<' then
                -- Special case of values enclosed in spans and other markup.
                comp = value:gsub( "%b<>", "" );
            else
                comp = value;
            end
           
            if comp:sub(1,1) == duplicate_char then
                trim = false;
                end_chr = str:sub(-1,-1);
                -- str = str .. "<HERE(enchr=" .. end_chr.. ")"
                if end_chr == duplicate_char then
                    str = str:sub(1,-2);
                elseif end_chr == "'" then
                    if str:sub(-3,-1) == duplicate_char .. "''" then
                        str = str:sub(1, -4) .. "''";
                    elseif str:sub(-5,-1) == duplicate_char .. "]]''" then
                        trim = true;
                    elseif str:sub(-4,-1) == duplicate_char .. "]''" then
                        trim = true;
                    end
                elseif end_chr == "]" then
                    if str:sub(-3,-1) == duplicate_char .. "]]" then
                        trim = true;
                    elseif str:sub(-2,-1) == duplicate_char .. "]" then
                        trim = true;
                    end
                elseif end_chr == " " then
                    if str:sub(-2,-1) == duplicate_char .. " " then
                        str = str:sub(1,-3);
                    end
                end


                if trim then
local function extra_text_in_page_check (val, name)
                    if value ~= comp then  
if not val:match (cfg.vol_iss_pg_patterns.good_ppattern) then
                        local dup2 = duplicate_char;
for _, pattern in ipairs (cfg.vol_iss_pg_patterns.bad_ppatterns) do -- spin through the selected sequence table of patterns
                        if dup2:match( "%A" ) then dup2 = "%" .. dup2; end
if val:match (pattern) then -- when a match, error so
                       
table.insert (z.message_tail, {utilities.set_message ('err_extra_text_pages', {name}, true)}); -- add error message
                        value = value:gsub( "(%b<>)" .. dup2, "%1", 1 )
return; -- and done
                    else
end
                        value = value:sub( 2, -1 );
end
                    end
end
                end
end
            end
 
            str = str .. value;
 
        end
--[[--------------------------< E X T R A _ T E X T _ I N _ V O L _ I S S _ C H E C K >------------------------
    end
 
    return str;
Adds error if |volume= or |issue= has what appears to be some form of redundant 'type' indicator.
end   
 
For |volume=:
'V.', or 'Vol.' (with or without the dot) abbreviations or 'Volume' in the first characters of the parameter
content (all case insensitive). 'V' and 'v' (without the dot) are presumed to be roman numerals so
are allowed.
 
For |issue=:
'No.', 'I.', 'Iss.' (with or without the dot) abbreviations, or 'Issue' in the first characters of the
parameter content (all case insensitive).
Single character values ('v', 'i', 'n') allowed when not followed by separator character ('.', ':', '=', or
whitespace character) – param values are trimmed of whitespace by MediaWiki before delivered to the module.
<val> is |volume= or |issue= parameter value
<name> is |volume= or |issue= parameter name for error message
<selector> is 'v' for |volume=, 'i' for |issue=
 
sets error message on failure; returns nothing
 
]]
 
local function extra_text_in_vol_iss_check (val, name, selector)
if not utilities.is_set (val) then
return;
end
local patterns = 'v' == selector and cfg.vol_iss_pg_patterns.vpatterns or cfg.vol_iss_pg_patterns.ipatterns;
 
local handler = 'v' == selector and 'err_extra_text_volume' or 'err_extra_text_issue';
val = val:lower(); -- force parameter value to lower case
for _, pattern in ipairs (patterns) do -- spin through the selected sequence table of patterns
if val:match (pattern) then -- when a match, error so
table.insert (z.message_tail, {utilities.set_message (handler, {name}, true)}); -- add error message
return; -- and done
end
end
end
 
 
--[=[-------------------------< G E T _ V _ N A M E _ T A B L E >----------------------------------------------
 
split apart a |vauthors= or |veditors= parameter.  This function allows for corporate names, wrapped in doubled
parentheses to also have commas; in the old version of the code, the doubled parentheses were included in the
rendered citation and in the metadata.  Individual author names may be wikilinked
 
|vauthors=Jones AB, [[E. B. White|White EB]], ((Black, Brown, and Co.))
 
]=]
 
local function get_v_name_table (vparam, output_table, output_link_table)
local name_table = mw.text.split(vparam, "%s*,%s*"); -- names are separated by commas
local wl_type, label, link; -- wl_type not used here; just a placeholder
local i = 1;
while name_table[i] do
if name_table[i]:match ('^%(%(.*[^%)][^%)]$') then -- first segment of corporate with one or more commas; this segment has the opening doubled parentheses
local name = name_table[i];
i = i + 1; -- bump indexer to next segment
while name_table[i] do
name = name .. ', ' .. name_table[i]; -- concatenate with previous segments
if name_table[i]:match ('^.*%)%)$') then -- if this table member has the closing doubled parentheses
break; -- and done reassembling so
end
i = i + 1; -- bump indexer
end
table.insert (output_table, name); -- and add corporate name to the output table
table.insert (output_link_table, ''); -- no wikilink
else
wl_type, label, link = utilities.is_wikilink (name_table[i]); -- wl_type is: 0, no wl (text in label variable); 1, [[D]]; 2, [[L|D]]
table.insert (output_table, label); -- add this name
if 1 == wl_type then
table.insert (output_link_table, label); -- simple wikilink [[D]]
else
table.insert (output_link_table, link); -- no wikilink or [[L|D]]; add this link if there is one, else empty string
end
end
i = i + 1;
end
return output_table;
end
 
 
--[[--------------------------< P A R S E _ V A U T H O R S _ V E D I T O R S >--------------------------------
 
This function extracts author / editor names from |vauthors= or |veditors= and finds matching |xxxxor-maskn= and
|xxxxor-linkn= in args. It then returns a table of assembled names just as extract_names() does.
 
Author / editor names in |vauthors= or |veditors= must be in Vancouver system style. Corporate or institutional names
may sometimes be required and because such names will often fail the is_good_vanc_name() and other format compliance
tests, are wrapped in doubled parentheses ((corporate name)) to suppress the format tests.
 
Supports generational suffixes Jr, 2nd, 3rd, 4th–6th.
 
This function sets the Vancouver error when a required comma is missing and when there is a space between an author's initials.


--[[
Return the year portion of a date string, if possible. 
Returns empty string if the argument can not be interpreted
as a year.
]]
]]
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;
        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.
local function parse_vauthors_veditors (args, vparam, list_name)
function reducetoinitials(first)
local names = {}; -- table of names assembled from |vauthors=, |author-maskn=, |author-linkn=
    local initials = {}
local v_name_table = {};
    for word in string.gmatch(first, "%S+") do
local v_link_table = {}; -- when name is wikilinked, targets go in this table
        table.insert(initials, string.sub(word,1,1)) -- Vancouver format does not include full stops.
local etal = false; -- return value set to true when we find some form of et al. vauthors parameter
    end
local last, first, link, mask, suffix;
    return table.concat(initials) -- Vancouver format does not include spaces.
local corporate = false;
 
vparam, etal = name_has_etal (vparam, etal, true); -- find and remove variations on et al. do not categorize (do it here because et al. might have a period)
v_name_table = get_v_name_table (vparam, v_name_table, v_link_table); -- names are separated by commas
 
for i, v_name in ipairs(v_name_table) do
first = ''; -- set to empty string for concatenation and because it may have been set for previous author/editor
local accept_name;
v_name, accept_name = utilities.has_accept_as_written (v_name); -- remove accept-this-as-written markup when it wraps all of <v_name>
 
if accept_name then
last = v_name;
corporate = true; -- flag used in list_people()
elseif string.find(v_name, "%s") then
if v_name:find('[;%.]') then -- look for commonly occurring punctuation characters;
add_vanc_error (cfg.err_msg_supl.punctuation, i);
end
local lastfirstTable = {}
lastfirstTable = mw.text.split(v_name, "%s+")
first = table.remove(lastfirstTable); -- removes and returns value of last element in table which should be initials or generational suffix
 
if not mw.ustring.match (first, '^%u+$') then -- mw.ustring here so that later we will catch non-Latin characters
suffix = first; -- not initials so assume that whatever we got is a generational suffix
first = table.remove(lastfirstTable); -- get what should be the initials from the table
end
last = table.concat(lastfirstTable, ' ') -- returns a string that is the concatenation of all other names that are not initials and generational suffix
if not utilities.is_set (last) then
first = ''; -- unset
last = v_name; -- last empty because something wrong with first
add_vanc_error (cfg.err_msg_supl.name, i);
end
if mw.ustring.match (last, '%a+%s+%u+%s+%a+') then
add_vanc_error (cfg.err_msg_supl['missing comma'], i); -- matches last II last; the case when a comma is missing
end
if mw.ustring.match (v_name, ' %u %u$') then -- this test is in the wrong place TODO: move or replace with a more appropriate test
add_vanc_error (cfg.err_msg_supl.initials, i); -- matches a space between two initials
end
else
last = v_name; -- last name or single corporate name?  Doesn't support multiword corporate names? do we need this?
end
if utilities.is_set (first) then
if not mw.ustring.match (first, "^%u?%u$") then -- first shall contain one or two upper-case letters, nothing else
add_vanc_error (cfg.err_msg_supl.initials, i); -- too many initials; mixed case initials (which may be ok Romanization); hyphenated initials
end
is_good_vanc_name (last, first, suffix, i); -- check first and last before restoring the suffix which may have a non-Latin digit
if utilities.is_set (suffix) then
first = first .. ' ' .. suffix; -- if there was a suffix concatenate with the initials
suffix = ''; -- unset so we don't add this suffix to all subsequent names
end
else
if not corporate then
is_good_vanc_name (last, '', nil, i);
end
end
 
link = utilities.select_one ( args, cfg.aliases[list_name .. '-Link'], 'err_redundant_parameters', i ) or v_link_table[i];
mask = utilities.select_one ( args, cfg.aliases[list_name .. '-Mask'], 'err_redundant_parameters', i );
names[i] = {last = last, first = first, link = link, mask = mask, corporate = corporate}; -- add this assembled name to our names list
end
return names, etal; -- all done, return our list of names
end
end


-- Formats a list of people (e.g. authors / editors)
function listpeople(control, people)
    local sep = control.sep;
    local namesep = control.namesep
    local format = control.format
    local maximum = control.maximum
    local lastauthoramp = control.lastauthoramp;
    local text = {}
    local etal = false;
   
    if sep:sub(-1,-1) ~= " " then sep = sep .. " " end
    if maximum ~= nil and maximum < 1 then return "", 0; end
   
    for i,person in ipairs(people) do
        if is_set(person.last) then
            local mask = person.mask
            local one
            local sep_one = sep;
            if maximum ~= nil and i > maximum then
                etal = true;
                break;
            elseif (mask ~= nil) then
                local n = tonumber(mask)
                if (n ~= nil) then
                    one = string.rep("&mdash;",n)
                else
                    one = mask;
                    sep_one = " ";
                end
            else
                one = person.last
                local first = person.first
                if is_set(first) then
                    if ( "vanc" == format ) then first = reducetoinitials(first) end
                    one = one .. namesep .. first
                end
                if is_set(person.link) then one = "[[" .. person.link .. "|" .. one .. "]]" end
            end
            table.insert( text, one )
            table.insert( text, sep_one )
        end
    end


    local count = #text / 2;
--[[--------------------------< S E L E C T _ A U T H O R _ E D I T O R _ S O U R C E >------------------------
    if count > 0 then
 
        if count > 1 and is_set(lastauthoramp) and not etal then
Select one of |authors=, |authorn= / |lastn / firstn=, or |vauthors= as the source of the author name list or
            text[#text-2] = " & ";
select one of |editorn= / editor-lastn= / |editor-firstn= or |veditors= as the source of the editor name list.
        end
 
        text[#text] = nil;  
Only one of these appropriate three will be used.  The hierarchy is: |authorn= (and aliases) highest and |authors= lowest;
    end
|editorn= (and aliases) highest and |veditors= lowest (support for |editors= withdrawn)
   
 
    local result = table.concat(text) -- construct list
When looking for |authorn= / |editorn= parameters, test |xxxxor1= and |xxxxor2= (and all of their aliases); stops after the second
    if etal then
test which mimicks the test used in extract_names() when looking for a hole in the author name list.  There may be a better
        local etal_text = cfg.messages['et al'];
way to do this, I just haven't discovered what that way is.
        result = result .. " " .. etal_text;
 
    end
Emits an error message when more than one xxxxor name source is provided.
   
 
    -- if necessary wrap result in <span> tag to format in Small Caps
In this function, vxxxxors = vauthors or veditors; xxxxors = authors as appropriate.
    if ( "scap" == format ) then result =
 
        '<span class="smallcaps" style="font-variant:small-caps">' .. result .. '</span>';
]]
    end  
 
    return result, count
local function select_author_editor_source (vxxxxors, xxxxors, args, list_name)
local lastfirst = false;
if utilities.select_one ( args, cfg.aliases[list_name .. '-Last'], 'none', 1 ) or -- do this twice in case we have a |first1= without a |last1=; this ...
utilities.select_one ( args, cfg.aliases[list_name .. '-First'], 'none', 1 ) or -- ... also catches the case where |first= is used with |vauthors=
utilities.select_one ( args, cfg.aliases[list_name .. '-Last'], 'none', 2 ) or
utilities.select_one ( args, cfg.aliases[list_name .. '-First'], 'none', 2 ) then
lastfirst = true;
end
 
if (utilities.is_set (vxxxxors) and true == lastfirst) or -- these are the three error conditions
(utilities.is_set (vxxxxors) and utilities.is_set (xxxxors)) or
(true == lastfirst and utilities.is_set (xxxxors)) then
local err_name;
if 'AuthorList' == list_name then -- figure out which name should be used in error message
err_name = 'author';
else
err_name = 'editor';
end
table.insert( z.message_tail, { utilities.set_message ( 'err_redundant_parameters',
{err_name .. '-name-list parameters'}, true ) } ); -- add error message
end
 
if true == lastfirst then return 1 end; -- return a number indicating which author name source to use
if utilities.is_set (vxxxxors) then return 2 end;
if utilities.is_set (xxxxors) then return 3 end;
return 1; -- no authors so return 1; this allows missing author name test to run in case there is a first without last
end
end


-- Generates a CITEREF anchor ID.
 
function anchorid( options )
--[[--------------------------< I S _ V A L I D _ P A R A M E T E R _ V A L U E >------------------------------
    return "CITEREF" .. table.concat( options );
 
This function is used to validate a parameter's assigned value for those parameters that have only a limited number
of allowable values (yes, y, true, live, dead, etc.).  When the parameter value has not been assigned a value (missing
or empty in the source template) the function returns the value specified by ret_val.  If the parameter value is one
of the list of allowed values returns the translated value; else, emits an error message and returns the value
specified by ret_val.
 
]]
 
local function is_valid_parameter_value (value, name, possible, ret_val)
if not utilities.is_set (value) then
return ret_val; -- an empty parameter is ok
elseif utilities.in_array (value, possible) then
return cfg.keywords_xlate[value]; -- return translation of parameter keyword
else
table.insert( z.message_tail, { utilities.set_message ( 'err_invalid_param_val', {name, value}, true ) } ); -- not an allowed value so add error message
return ret_val;
end
end
end


-- Gets name list from the input arguments
 
function extractnames(args, list_name)
--[[--------------------------< T E R M I N A T E _ N A M E _ L I S T >----------------------------------------
    local names = {};
 
    local i = 1;
This function terminates a name list (author, contributor, editor) with a separator character (sepc) and a space
    local last;
when the last character is not a sepc character or when the last three characters are not sepc followed by two
   
closing square brackets (close of a wikilink).  When either of these is true, the name_list is terminated with a
    while true do
single space character.
        last = selectone( args, cfg.aliases[list_name .. '-Last'], 'redundant_parameters', i );
 
        if not is_set(last) then
]]
            -- just in case someone passed in an empty parameter
 
            break;
local function terminate_name_list (name_list, sepc)
        end
if (string.sub (name_list, -3, -1) == sepc .. '. ') then -- if already properly terminated
        names[i] = {
return name_list; -- just return the name list
            last = last,
elseif (string.sub (name_list, -1, -1) == sepc) or (string.sub (name_list, -3, -1) == sepc .. ']]') then -- if last name in list ends with sepc char
            first = selectone( args, cfg.aliases[list_name .. '-First'], 'redundant_parameters', i ),
return name_list .. " "; -- don't add another
            link = selectone( args, cfg.aliases[list_name .. '-Link'], 'redundant_parameters', i ),
else
            mask = selectone( args, cfg.aliases[list_name .. '-Mask'], 'redundant_parameters', i )
return name_list .. sepc .. ' '; -- otherwise terminate the name list
        };
end
        i = i + 1;
    end
    return names;
end
end


-- Populates ID table from arguments using configuration settings
 
function extractids( args )
--[[-------------------------< F O R M A T _ V O L U M E _ I S S U E >----------------------------------------
    local id_list = {};
 
    for k, v in pairs( cfg.id_handlers ) do   
returns the concatenation of the formatted volume and issue parameters as a single string; or formatted volume
        v = selectone( args, v.parameters, 'redundant_parameters' );
or formatted issue, or an empty string if neither are set.
        if is_set(v) then id_list[k] = v; end
 
    end
]]
    return id_list;
local function format_volume_issue (volume, issue, cite_class, origin, sepc, lower)
if not utilities.is_set (volume) and not utilities.is_set (issue) then
return '';
end
if 'magazine' == cite_class or (utilities.in_array (cite_class, {'citation', 'map'}) and 'magazine' == origin) then
if utilities.is_set (volume) and utilities.is_set (issue) then
return wrap_msg ('vol-no', {sepc, hyphen_to_dash (volume), issue}, lower);
elseif utilities.is_set (volume) then
return wrap_msg ('vol', {sepc, hyphen_to_dash (volume)}, lower);
else
return wrap_msg ('issue', {sepc, issue}, lower);
end
end
 
if 'podcast' == cite_class and utilities.is_set (issue) then
return wrap_msg ('issue', {sepc, issue}, lower);
end
 
local vol = ''; -- here for all cites except magazine
if utilities.is_set (volume) then
if volume:match ('^[MDCLXVI]+$') or volume:match ('^%d+$') then -- volume value is all digits or all uppercase Roman numerals
vol = utilities.substitute (cfg.presentation['vol-bold'], {sepc, volume}); -- render in bold face
elseif (4 < mw.ustring.len(volume)) then -- not all digits or Roman numerals and longer than 4 characters
vol = utilities.substitute (cfg.messages['j-vol'], {sepc, hyphen_to_dash (volume)}); -- not bold
utilities.add_prop_cat ('long_vol');
else -- four or less characters
vol = utilities.substitute (cfg.presentation['vol-bold'], {sepc, hyphen_to_dash (volume)}); -- bold
end
end
if utilities.is_set (issue) then
return vol .. utilities.substitute (cfg.messages['j-issue'], issue);
end
return vol;
end
end


-- Takes a table of IDs and turns it into a table of formatted ID outputs.
 
function buildidlist( id_list, options )
--[[-------------------------< F O R M A T _ P A G E S _ S H E E T S >-----------------------------------------
    local new_list, handler = {};
 
   
adds static text to one of |page(s)= or |sheet(s)= values and returns it with all of the others set to empty strings.
    function fallback(k) return { __index = function(t,i) return cfg.id_handlers[k][i] end } end;
The return order is:
   
page, pages, sheet, sheets
    for k, v in pairs( id_list ) do
 
        -- fallback to read-only cfg
Singular has priority over plural when both are provided.
        handler = setmetatable( { ['id'] = v }, fallback(k) );
 
       
]]
        if handler.mode == 'external' then
 
            table.insert( new_list, {handler.label, externallinkid( handler ) } );
local function format_pages_sheets (page, pages, sheet, sheets, cite_class, origin, sepc, nopp, lower)
        elseif handler.mode == 'internal' then
if 'map' == cite_class then -- only cite map supports sheet(s) as in-source locators
            table.insert( new_list, {handler.label, internallinkid( handler ) } );
if utilities.is_set (sheet) then
        elseif handler.mode ~= 'manual' then
if 'journal' == origin then
            error( cfg.messages['unknown_ID_mode'] );
return '', '', wrap_msg ('j-sheet', sheet, lower), '';
        elseif k == 'DOI' then
else
            table.insert( new_list, {handler.label, doi( v, options.DoiBroken ) } );
return '', '', wrap_msg ('sheet', {sepc, sheet}, lower), '';
        elseif k == 'ASIN' then
end
            table.insert( new_list, {handler.label, amazon( v, options.ASINTLD ) } );  
elseif utilities.is_set (sheets) then
        elseif k == 'OL' then
if 'journal' == origin then
            table.insert( new_list, {handler.label, openlibrary( v ) } );
return '', '', '', wrap_msg ('j-sheets', sheets, lower);
        elseif k == 'PMC' then
else
            table.insert( new_list, {handler.label, pmc( v, options.Embargo ) } );
return '', '', '', wrap_msg ('sheets', {sepc, sheets}, lower);
        elseif k == 'ISSN' then
end
        table.insert( new_list, {handler.label, issn( v ) } );
end
        elseif k == 'ISBN' then
end
            local ISBN = internallinkid( handler );
 
            if not checkisbn( v ) and not is_set(options.IgnoreISBN) then
local is_journal = 'journal' == cite_class or (utilities.in_array (cite_class, {'citation', 'map', 'interview'}) and 'journal' == origin);
                ISBN = ISBN .. seterror( 'bad_isbn', {}, false, " ", "" );
            end
if utilities.is_set (page) then
            table.insert( new_list, {handler.label, ISBN } );              
if is_journal then
        else
return utilities.substitute (cfg.messages['j-page(s)'], page), '', '', '';
            error( cfg.messages['unknown_manual_ID'] );
elseif not nopp then
        end
return utilities.substitute (cfg.messages['p-prefix'], {sepc, page}), '', '', '';
    end
else
   
return utilities.substitute (cfg.messages['nopp'], {sepc, page}), '', '', '';
    function comp( a, b )
end
        return a[1] < b[1];
elseif utilities.is_set (pages) then
    end
if is_journal then
   
return utilities.substitute (cfg.messages['j-page(s)'], pages), '', '', '';
    table.sort( new_list, comp );
elseif tonumber(pages) ~= nil and not nopp then -- if pages is only digits, assume a single page number
    for k, v in ipairs( new_list ) do
return '', utilities.substitute (cfg.messages['p-prefix'], {sepc, pages}), '', '';
        new_list[k] = v[2];
elseif not nopp then
    end
return '', utilities.substitute (cfg.messages['pp-prefix'], {sepc, pages}), '', '';
   
else
    return new_list;
return '', utilities.substitute (cfg.messages['nopp'], {sepc, pages}), '', '';
end
end
return '', '', '', ''; -- return empty strings
end
end
 
 
-- Chooses one matching parameter from a list of parameters to consider
 
-- Generates an error if more than one match is present.
--[[--------------------------< I N S O U R C E _ L O C _ G E T >----------------------------------------------
function selectone( args, possible, error_condition, index )
 
    local value = nil;
returns one of the in-source locators: page, pages, or at.
    local selected = '';
 
    local error_list = {};
If any of these are interwiki links to Wikisource, returns the label portion of the interwiki-link as plain text
   
for use in COinS.  This COinS thing is done because here we convert an interwiki-link to an external link and
    if index ~= nil then index = tostring(index); end
add an icon span around that; get_coins_pages() doesn't know about the span.  TODO: should it? 
   
 
    -- Handle special case of "#" replaced by empty string
TODO: add support for sheet and sheets?; streamline;
    if index == '1' then
 
        for _, v in ipairs( possible ) do
TODO: make it so that this function returns only one of the three as the single in-source (the return value assigned
            v = v:gsub( "#", "" );
to a new name)?
            if is_set(args[v]) then
 
                if value ~= nil and selected ~= v then
]]
                    table.insert( error_list, v );
 
                else
local function insource_loc_get (page, page_orig, pages, pages_orig, at)
                    value = args[v];
local ws_url, ws_label, coins_pages, L; -- for Wikisource interwiki-links; TODO: this corrupts page metadata (span remains in place after cleanup; fix there?)
                    selected = v;
 
                end
if utilities.is_set (page) then
            end
if utilities.is_set (pages) or utilities.is_set (at) then
        end       
pages = ''; -- unset the others
    end
at = '';
   
end
    for _, v in ipairs( possible ) do
extra_text_in_page_check (page, page_orig); -- emit error message when |page= value begins with what looks like p., pp., etc.
        if index ~= nil then
 
            v = v:gsub( "#", index );
ws_url, ws_label, L = wikisource_url_make (page); -- make ws URL from |page= interwiki link; link portion L becomes tooltip label
        end
if ws_url then
        if is_set(args[v]) then
page = external_link (ws_url, ws_label .. '&nbsp;', 'ws link in page'); -- space char after label to move icon away from in-source text; TODO: a better way to do this?
            if value ~= nil and selected ~= v then
page = utilities.substitute (cfg.presentation['interwiki-icon'], {cfg.presentation['class-wikisource'], L, page});
                table.insert( error_list, v );
coins_pages = ws_label;
            else
end
                value = args[v];
elseif utilities.is_set (pages) then
                selected = v;
if utilities.is_set (at) then
            end
at = ''; -- unset
        end
end
    end
extra_text_in_page_check (pages, pages_orig); -- emit error message when |page= value begins with what looks like p., pp., etc.
   
 
    if #error_list > 0 then
ws_url, ws_label, L = wikisource_url_make (pages); -- make ws URL from |pages= interwiki link; link portion L becomes tooltip label
        local error_str = "";
if ws_url then
        for _, k in ipairs( error_list ) do
pages = external_link (ws_url, ws_label .. '&nbsp;', 'ws link in pages'); -- space char after label to move icon away from in-source text; TODO: a better way to do this?
            if error_str ~= "" then error_str = error_str .. cfg.messages['parameter-separator'] end
pages = utilities.substitute (cfg.presentation['interwiki-icon'], {cfg.presentation['class-wikisource'], L, pages});
            error_str = error_str .. wrap( 'parameter', k );
coins_pages = ws_label;
        end
end
        if #error_list > 1 then
elseif utilities.is_set (at) then
            error_str = error_str .. cfg.messages['parameter-final-separator'];
ws_url, ws_label, L = wikisource_url_make (at); -- make ws URL from |at= interwiki link; link portion L becomes tooltip label
        else
if ws_url then
            error_str = error_str .. cfg.messages['parameter-pair-separator'];
at = external_link (ws_url, ws_label .. '&nbsp;', 'ws link in at'); -- space char after label to move icon away from in-source text; TODO: a better way to do this?
        end
at = utilities.substitute (cfg.presentation['interwiki-icon'], {cfg.presentation['class-wikisource'], L, at});
        error_str = error_str .. wrap( 'parameter', selected );
coins_pages = ws_label;
        table.insert( z.message_tail, { seterror( error_condition, {error_str}, true ) } );
end
    end
end
   
    return value, selected;
return page, pages, at, coins_pages;
end
 
--[[--------------------------< I S _ U N I Q U E _ A R C H I V E _ U R L >------------------------------------
 
add error message when |archive-url= value is same as |url= or chapter-url= (or alias...) value
 
]]
 
local function is_unique_archive_url (archive, url, c_url, source, date)
if utilities.is_set (archive) then
if archive == url or archive == c_url then
table.insert (z.message_tail, {utilities.set_message ('err_bad_url', {utilities.wrap_style ('parameter', source)}, true)}); -- add error message
return '', ''; -- unset |archive-url= and |archive-date= because same as |url= or |chapter-url=
end
end
 
return archive, date;
end
 
 
--[=[-------------------------< A R C H I V E _ U R L _ C H E C K >--------------------------------------------
 
Check archive.org URLs to make sure they at least look like they are pointing at valid archives and not to the
save snapshot URL or to calendar pages.  When the archive URL is 'https://web.archive.org/save/' (or http://...)
archive.org saves a snapshot of the target page in the URL.  That is something that Wikipedia should not allow
unwitting readers to do.
 
When the archive.org URL does not have a complete timestamp, archive.org chooses a snapshot according to its own
algorithm or provides a calendar 'search' result.  [[WP:ELNO]] discourages links to search results.
 
This function looks at the value assigned to |archive-url= and returns empty strings for |archive-url= and
|archive-date= and an error message when:
|archive-url= holds an archive.org save command URL
|archive-url= is an archive.org URL that does not have a complete timestamp (YYYYMMDDhhmmss 14 digits) in the
correct place
otherwise returns |archive-url= and |archive-date=
 
There are two mostly compatible archive.org URLs:
//web.archive.org/<timestamp>... -- the old form
//web.archive.org/web/<timestamp>... -- the new form
 
The old form does not support or map to the new form when it contains a display flag. There are four identified flags
('id_', 'js_', 'cs_', 'im_') but since archive.org ignores others following the same form (two letters and an underscore)
we don't check for these specific flags but we do check the form.
 
This function supports a preview mode.  When the article is rendered in preview mode, this function may return a modified
archive URL:
for save command errors, return undated wildcard (/*/)
for timestamp errors when the timestamp has a wildcard, return the URL unmodified
for timestamp errors when the timestamp does not have a wildcard, return with timestamp limited to six digits plus wildcard (/yyyymm*/)
 
]=]
 
local function archive_url_check (url, date)
local err_msg = ''; -- start with the error message empty
local path, timestamp, flag; -- portions of the archive.org URL
if (not url:match('//web%.archive%.org/')) and (not url:match('//liveweb%.archive%.org/')) then -- also deprecated liveweb Wayback machine URL
return url, date; -- not an archive.org archive, return ArchiveURL and ArchiveDate
end
 
if url:match('//web%.archive%.org/save/') then -- if a save command URL, we don't want to allow saving of the target page
err_msg = cfg.err_msg_supl.save;
url = url:gsub ('(//web%.archive%.org)/save/', '%1/*/', 1); -- for preview mode: modify ArchiveURL
elseif url:match('//liveweb%.archive%.org/') then
err_msg = cfg.err_msg_supl.liveweb;
else
path, timestamp, flag = url:match('//web%.archive%.org/([^%d]*)(%d+)([^/]*)/'); -- split out some of the URL parts for evaluation
if not utilities.is_set (timestamp) or 14 ~= timestamp:len() then -- path and flag optional, must have 14-digit timestamp here
err_msg = cfg.err_msg_supl.timestamp;
if '*' ~= flag then
url=url:gsub ('(//web%.archive%.org/[^%d]*%d?%d?%d?%d?%d?%d?)[^/]*', '%1*', 1) -- for preview, modify ts to be yearmo* max (0-6 digits plus splat)
end
elseif utilities.is_set (path) and 'web/' ~= path then -- older archive URLs do not have the extra 'web/' path element
err_msg = cfg.err_msg_supl.path;
elseif utilities.is_set (flag) and not utilities.is_set (path) then -- flag not allowed with the old form URL (without the 'web/' path element)
err_msg = cfg.err_msg_supl.flag;
elseif utilities.is_set (flag) and not flag:match ('%a%a_') then -- flag if present must be two alpha characters and underscore (requires 'web/' path element)
err_msg = cfg.err_msg_supl.flag;
else
return url, date; -- return ArchiveURL and ArchiveDate
end
end
-- if here, something not right so
table.insert( z.message_tail, { utilities.set_message ( 'err_archive_url', {err_msg}, true ) } ); -- add error message and
if utilities.is_set (Frame:preprocess('{{REVISIONID}}')) then
return '', ''; -- return empty strings for ArchiveURL and ArchiveDate
else
return url, date; -- preview mode so return ArchiveURL and ArchiveDate
end
end
 
 
--[[--------------------------< P L A C E _ C H E C K >--------------------------------------------------------
 
check |place=, |publication-place=, |location= to see if these params include digits.  This function added because
many editors misuse location to specify the in-source location (|page(s)= and |at= are supposed to do that)
 
returns the original parameter value without modification; added maint cat when parameter value contains digits
 
]]
 
local function place_check (param_val)
if not utilities.is_set (param_val) then -- parameter empty or omitted
return param_val; -- return that empty state
end
if mw.ustring.find (param_val, '%d') then -- not empty, are there digits in the parameter value
utilities.set_message ('maint_location'); -- yep, add maint cat
end
return param_val; -- and done
end
 
 
--[[--------------------------< I S _ G E N E R I C _ T I T L E >----------------------------------------------
 
compares |title= value against list of known generic title patterns.  Returns true when pattern matches; nil else
 
the k/v pairs in 'generic_titles' each contain two tables, one for English and one for another 'local' language
Each of those tables contain another table that holds the string or pattern (whole title or title fragment) in
index [1].  index [2] is a Boolean that tells string.find() or mw.ustring.find() to do plain-text search (true)
or a pattern search (false).  The intent of all this complexity is to make these searches as fast as possible so
that we don't run out of processing time on very large articles.
 
]]
 
local function is_generic_title (title)
title = mw.ustring.lower(title); -- switch title to lower case
for _, generic_title in ipairs (cfg.special_case_translation['generic_titles']) do -- spin through the list of known generic title fragments
if title:find (generic_title['en'][1], 1, generic_title['en'][2]) then
return true; -- found English generic title so done
elseif generic_title['local'] then -- to keep work load down, generic_title['local'] should be nil except when there is a local version of the generic title
if mw.ustring.find (title, generic_title['local'][1], 1, generic_title['local'][2]) then -- mw.ustring() because might not be Latin script
return true; -- found local generic title so done
end
end
end
end
end


-- COinS metadata (see <http://ocoins.info/>) allows automated tools to parse
 
-- the citation information.
--[[--------------------------< I S _ A R C H I V E D _ C O P Y >----------------------------------------------
function COinS(data)
 
    if 'table' ~= type(data) or nil == next(data) then
compares |title= to 'Archived copy' (placeholder added by bots that can't find proper title); if matches, return true; nil else
        return '';
 
    end
]]
   
 
    local ctx_ver = "Z39.88-2004";
local function is_archived_copy (title)
   
title = mw.ustring.lower(title); -- switch title to lower case
    -- treat table strictly as an array with only set values.
if title:find (cfg.special_case_translation.archived_copy.en) then -- if title is 'Archived copy'
    local OCinSoutput = setmetatable( {}, {
return true;
        __newindex = function(self, key, value)
elseif cfg.special_case_translation.archived_copy['local'] then
            if is_set(value) then
if mw.ustring.find (title, cfg.special_case_translation.archived_copy['local']) then -- mw.ustring() because might not be Latin script
                rawset( self, #self+1, table.concat{ key, '=', mw.uri.encode( removewikilink( value ) ) } );
return true;
            end
end
        end
end
    });
   
    if is_set(data.Chapter) then
        OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
        OCinSoutput["rft.genre"] = "bookitem";
        OCinSoutput["rft.btitle"] = data.Chapter;
        OCinSoutput["rft.atitle"] = data.Title;
    elseif is_set(data.Periodical) then
        OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:journal";
        OCinSoutput["rft.genre"] = "article";
        OCinSoutput["rft.jtitle"] = data.Periodical;
        OCinSoutput["rft.atitle"] = data.Title;
    else
        OCinSoutput.rft_val_fmt = "info:ofi/fmt:kev:mtx:book";
        OCinSoutput["rft.genre"] = "book"
        OCinSoutput["rft.btitle"] = data.Title;
    end
   
    OCinSoutput["rft.place"] = data.PublicationPlace;
    OCinSoutput["rft.date"] = data.Date;
    OCinSoutput["rft.series"] = data.Series;
    OCinSoutput["rft.volume"] = data.Volume;
    OCinSoutput["rft.issue"] = data.Issue;
    OCinSoutput["rft.pages"] = data.Pages;
    OCinSoutput["rft.edition"] = data.Edition;
    OCinSoutput["rft.pub"] = data.PublisherName;
   
    for k, v in pairs( data.ID_list ) do
        local id, value = cfg.id_handlers[k].COinS;
        if k == 'ISBN' then value = cleanisbn( v ); else value = v; end
        if string.sub( id or "", 1, 4 ) == 'info' then
            OCinSoutput["rft_id"] = table.concat{ id, "/", v };
        else
            OCinSoutput[ id ] = value;
        end
    end
   
    local last, first;
    for k, v in ipairs( data.Authors ) do
        last, first = v.last, v.first;
        if k == 1 then
            if is_set(last) then
                OCinSoutput["rft.aulast"] = last;
            end
            if is_set(first) then  
                OCinSoutput["rft.aufirst"] = first;
            end
        end
        if is_set(last) and is_set(first) then
            OCinSoutput["rft.au"] = table.concat{ last, ", ", first };
        elseif is_set(last) then
            OCinSoutput["rft.au"] = last;
        end
    end
   
    OCinSoutput.rft_id = data.URL;
    OCinSoutput.rfr_id = table.concat{ "info:sid/", mw.site.server:match( "[^/]*$" ), ":", data.RawPage };
    OCinSoutput = setmetatable( OCinSoutput, nil );
   
    -- sort with version string always first, and combine.
    table.sort( OCinSoutput );
    table.insert( OCinSoutput, 1, "ctx_ver=" .. ctx_ver );  -- such as "Z39.88-2004"
    return table.concat(OCinSoutput, "&");
end
end


--[[
 
This is the main function foing the majority of the citation
--[[--------------------------< C I T A T I O N 0 >------------------------------------------------------------
formatting.
 
This is the main function doing the majority of the citation formatting.
 
]]
]]
function citation0( config, args)
    --[[
    Load Input Parameters
    The argment_wrapper facillitates the mapping of multiple
    aliases to single internal variable.
    ]]
    local A = argument_wrapper( args );


    local i  
local function citation0( config, args )
    local PPrefix = A['PPrefix']
--[[
    local PPPrefix = A['PPPrefix']
Load Input Parameters
    if is_set( A['NoPP'] ) then PPPrefix = "" PPrefix = "" end
The argument_wrapper facilitates the mapping of multiple aliases to single internal variable.
   
]]
    -- Pick out the relevant fields from the arguments.  Different citation templates
local A = argument_wrapper ( args );
    -- define different field names for the same underlying things.  
local i
    local Authors = A['Authors'];
 
    local a = extractnames( args, 'AuthorList' );
-- Pick out the relevant fields from the arguments.  Different citation templates
-- define different field names for the same underlying things.
 
local author_etal;
local a = {}; -- authors list from |lastn= / |firstn= pairs or |vauthors=
local Authors;
local NameListStyle = is_valid_parameter_value (A['NameListStyle'], A:ORIGIN('NameListStyle'), cfg.keywords_lists['name-list-style'], '');
local Collaboration = A['Collaboration'];
 
do -- to limit scope of selected
local selected = select_author_editor_source (A['Vauthors'], A['Authors'], args, 'AuthorList');
if 1 == selected then
a, author_etal = extract_names (args, 'AuthorList'); -- fetch author list from |authorn= / |lastn= / |firstn=, |author-linkn=, and |author-maskn=
elseif 2 == selected then
NameListStyle = 'vanc'; -- override whatever |name-list-style= might be
a, author_etal = parse_vauthors_veditors (args, args.vauthors, 'AuthorList'); -- fetch author list from |vauthors=, |author-linkn=, and |author-maskn=
elseif 3 == selected then
Authors = A['Authors']; -- use content of |authors=
if 'authors' == A:ORIGIN('Authors') then -- but add a maint cat if the parameter is |authors=
utilities.set_message ('maint_authors'); -- because use of this parameter is discouraged; what to do about the aliases is a TODO:
end
end
if utilities.is_set (Collaboration) then
author_etal = true; -- so that |display-authors=etal not required
end
end
 
local editor_etal;
local e = {}; -- editors list from |editor-lastn= / |editor-firstn= pairs or |veditors=
 
do -- to limit scope of selected
local selected = select_author_editor_source (A['Veditors'], nil, args, 'EditorList'); -- support for |editors= withdrawn
if 1 == selected then
e, editor_etal = extract_names (args, 'EditorList'); -- fetch editor list from |editorn= / |editor-lastn= / |editor-firstn=, |editor-linkn=, and |editor-maskn=
elseif 2 == selected then
NameListStyle = 'vanc'; -- override whatever |name-list-style= might be
e, editor_etal = parse_vauthors_veditors (args, args.veditors, 'EditorList'); -- fetch editor list from |veditors=, |editor-linkn=, and |editor-maskn=
end
end
local Chapter = A['Chapter']; -- done here so that we have access to |contribution= from |chapter= aliases
local Chapter_origin = A:ORIGIN ('Chapter');
local Contribution; -- because contribution is required for contributor(s)
if 'contribution' == Chapter_origin then
Contribution = Chapter; -- get the name of the contribution
end
local c = {}; -- contributors list from |contributor-lastn= / contributor-firstn= pairs
if utilities.in_array (config.CitationClass, {"book", "citation"}) and not utilities.is_set (A['Periodical']) then -- |contributor= and |contribution= only supported in book cites
c = extract_names (args, 'ContributorList'); -- fetch contributor list from |contributorn= / |contributor-lastn=, -firstn=, -linkn=, -maskn=
if 0 < #c then
if not utilities.is_set (Contribution) then -- |contributor= requires |contribution=
table.insert( z.message_tail, { utilities.set_message ( 'err_contributor_missing_required_param', 'contribution')}); -- add missing contribution error message
c = {}; -- blank the contributors' table; it is used as a flag later
end
if 0 == #a then -- |contributor= requires |author=
table.insert( z.message_tail, { utilities.set_message ( 'err_contributor_missing_required_param', 'author')}); -- add missing author error message
c = {}; -- blank the contributors' table; it is used as a flag later
end
end
else -- if not a book cite
if utilities.select_one (args, cfg.aliases['ContributorList-Last'], 'err_redundant_parameters', 1 ) then -- are there contributor name list parameters?
table.insert( z.message_tail, { utilities.set_message ( 'err_contributor_ignored')}); -- add contributor ignored error message
end
Contribution = nil; -- unset
end
 
local Title = A['Title'];
local TitleLink = A['TitleLink'];
 
local auto_select = ''; -- default is auto
local accept_link;
TitleLink, accept_link = utilities.has_accept_as_written(TitleLink, true); -- test for accept-this-as-written markup
if (not accept_link) and utilities.in_array (TitleLink, {'none', 'pmc', 'doi'}) then -- check for special keywords
auto_select = TitleLink; -- remember selection for later
TitleLink = ''; -- treat as if |title-link= would have been empty
end
 
TitleLink = link_title_ok (TitleLink, A:ORIGIN ('TitleLink'), Title, 'title'); -- check for wiki-markup in |title-link= or wiki-markup in |title= when |title-link= is set
 
local Section = ''; -- {{cite map}} only; preset to empty string for concatenation if not used
if 'map' == config.CitationClass and 'section' == Chapter_origin then
Section = A['Chapter']; -- get |section= from |chapter= alias list; |chapter= and the other aliases not supported in {{cite map}}
Chapter = ''; -- unset for now; will be reset later from |map= if present
end
 
local Periodical = A['Periodical'];
local Periodical_origin = '';
if utilities.is_set (Periodical) then
Periodical_origin = A:ORIGIN('Periodical'); -- get the name of the periodical parameter
local i;
Periodical, i = utilities.strip_apostrophe_markup (Periodical); -- strip apostrophe markup so that metadata isn't contaminated
if i then -- non-zero when markup was stripped so emit an error message
table.insert( z.message_tail, {utilities.set_message ('err_apostrophe_markup', {Periodical_origin}, true)});
end
end
 
if 'mailinglist' == config.CitationClass then -- special case for {{cite mailing list}}
if utilities.is_set (Periodical) and utilities.is_set (A ['MailingList']) then -- both set emit an error
table.insert( z.message_tail, {utilities.set_message ('err_redundant_parameters', {utilities.wrap_style ('parameter', Periodical_origin) .. ' and ' .. utilities.wrap_style ('parameter', 'mailinglist')}, true )});
end
 
Periodical = A ['MailingList']; -- error or no, set Periodical to |mailinglist= value because this template is {{cite mailing list}}
Periodical_origin = A:ORIGIN('MailingList');
end
 
local ScriptPeriodical = A['ScriptPeriodical'];
 
-- web and news not tested for now because of
-- Wikipedia:Administrators%27_noticeboard#Is_there_a_semi-automated_tool_that_could_fix_these_annoying_"Cite_Web"_errors?
if not (utilities.is_set (Periodical) or utilities.is_set (ScriptPeriodical)) then -- 'periodical' templates require periodical parameter
-- local p = {['journal'] = 'journal', ['magazine'] = 'magazine', ['news'] = 'newspaper', ['web'] = 'website'}; -- for error message
local p = {['journal'] = 'journal', ['magazine'] = 'magazine'}; -- for error message
if p[config.CitationClass]  then
table.insert( z.message_tail, {utilities.set_message ('err_missing_periodical', {config.CitationClass, p[config.CitationClass]}, true)});
end
end
local Volume;
local ScriptPeriodical_origin = A:ORIGIN('ScriptPeriodical');
if 'citation' == config.CitationClass then
if utilities.is_set (Periodical) then
if not utilities.in_array (Periodical_origin, {'website', 'mailinglist'}) then -- {{citation}} does not render volume for these 'periodicals'
Volume = A['Volume']; -- but does for all other 'periodicals'
end
elseif utilities.is_set (ScriptPeriodical) then
if 'script-website' ~= ScriptPeriodical_origin then -- {{citation}} does not render volume for |script-website=
Volume = A['Volume']; -- but does for all other 'periodicals'
end
else
Volume = A['Volume']; -- and does for non-'periodical' cites
end
elseif utilities.in_array (config.CitationClass, cfg.templates_using_volume) then -- render |volume= for cs1 according to the configuration settings
Volume = A['Volume'];
end
extra_text_in_vol_iss_check (Volume, A:ORIGIN ('Volume'), 'v');
 
local Issue;
if 'citation' == config.CitationClass then
if utilities.is_set (Periodical) and utilities.in_array (Periodical_origin, {'journal', 'magazine', 'newspaper', 'periodical', 'work'}) or -- {{citation}} renders issue for these 'periodicals'
utilities.is_set (ScriptPeriodical) and utilities.in_array (ScriptPeriodical_origin, {'script-journal', 'script-magazine', 'script-newspaper', 'script-periodical', 'script-work'}) then -- and these 'script-periodicals'
Issue = hyphen_to_dash (A['Issue']);
end
elseif utilities.in_array (config.CitationClass, cfg.templates_using_issue) then -- conference & map books do not support issue; {{citation}} listed here because included in settings table
if not (utilities.in_array (config.CitationClass, {'conference', 'map', 'citation'}) and not (utilities.is_set (Periodical) or utilities.is_set (ScriptPeriodical))) then
Issue = hyphen_to_dash (A['Issue']);
end
end
extra_text_in_vol_iss_check (Issue, A:ORIGIN ('Issue'), 'i');
 
local Page;
local Pages;
local At;
if not utilities.in_array (config.CitationClass, cfg.templates_not_using_page) then
Page = A['Page'];
Pages = hyphen_to_dash (A['Pages']);
At = A['At'];
end
 
local Edition = A['Edition'];
local PublicationPlace = place_check (A['PublicationPlace'], A:ORIGIN('PublicationPlace'));
local Place = place_check (A['Place'], A:ORIGIN('Place'));
local PublisherName = A['PublisherName'];
local PublisherName_origin = A:ORIGIN('PublisherName');
if utilities.is_set (PublisherName) then
local i = 0;
PublisherName, i = utilities.strip_apostrophe_markup (PublisherName); -- strip apostrophe markup so that metadata isn't contaminated; publisher is never italicized
if i then -- non-zero when markup was stripped so emit an error message
table.insert( z.message_tail, {utilities.set_message ('err_apostrophe_markup', {PublisherName_origin}, true)});
end
end
 
local Newsgroup = A['Newsgroup']; -- TODO: strip apostrophe markup?
local Newsgroup_origin = A:ORIGIN('Newsgroup');
 
if 'newsgroup' == config.CitationClass then
if utilities.is_set (PublisherName) then -- general use parameter |publisher= not allowed in cite newsgroup
local error_text, error_state = utilities.set_message ('err_parameter_ignored', {PublisherName_origin}, true);
if utilities.is_set (error_text) then
table.insert( z.message_tail, {error_text, error_state} );
end
end
 
PublisherName = nil; -- ensure that this parameter is unset for the time being; will be used again after COinS
end
 
local URL = A['URL']
local UrlAccess = is_valid_parameter_value (A['UrlAccess'], A:ORIGIN('UrlAccess'), cfg.keywords_lists['url-access'], nil);
if not utilities.is_set (URL) and utilities.is_set (UrlAccess) then
UrlAccess = nil;
table.insert( z.message_tail, { utilities.set_message ( 'err_param_access_requires_param', {'url'}, true ) } );
end
local ChapterURL = A['ChapterURL'];
local ChapterUrlAccess = is_valid_parameter_value (A['ChapterUrlAccess'], A:ORIGIN('ChapterUrlAccess'), cfg.keywords_lists['url-access'], nil);
if not utilities.is_set (ChapterURL) and utilities.is_set (ChapterUrlAccess) then
ChapterUrlAccess = nil;
table.insert( z.message_tail, { utilities.set_message ( 'err_param_access_requires_param', {A:ORIGIN('ChapterUrlAccess'):gsub ('%-access', '')}, true ) } );
end
 
local MapUrlAccess = is_valid_parameter_value (A['MapUrlAccess'], A:ORIGIN('MapUrlAccess'), cfg.keywords_lists['url-access'], nil);
if not utilities.is_set (A['MapURL']) and utilities.is_set (MapUrlAccess) then
MapUrlAccess = nil;
table.insert( z.message_tail, { utilities.set_message ( 'err_param_access_requires_param', {'map-url'}, true ) } );
end
 
local this_page = mw.title.getCurrentTitle(); -- also used for COinS and for language
local no_tracking_cats = is_valid_parameter_value (A['NoTracking'], A:ORIGIN('NoTracking'), cfg.keywords_lists['yes_true_y'], nil);
 
-- check this page to see if it is in one of the namespaces that cs1 is not supposed to add to the error categories
if not utilities.is_set (no_tracking_cats) then -- ignore if we are already not going to categorize this page
if utilities.in_array (this_page.nsText, cfg.uncategorized_namespaces) then
no_tracking_cats = "true"; -- set no_tracking_cats
end
for _, v in ipairs (cfg.uncategorized_subpages) do -- cycle through page name patterns
if this_page.text:match (v) then -- test page name against each pattern
no_tracking_cats = "true"; -- set no_tracking_cats
break; -- bail out if one is found
end
end
end
-- check for extra |page=, |pages= or |at= parameters. (also sheet and sheets while we're at it)
utilities.select_one (args, {'page', 'p', 'pp', 'pages', 'at', 'sheet', 'sheets'}, 'err_redundant_parameters'); -- this is a dummy call simply to get the error message and category
 
local coins_pages;
Page, Pages, At, coins_pages = insource_loc_get (Page, A:ORIGIN('Page'), Pages, A:ORIGIN('Pages'), At);
 
local NoPP = is_valid_parameter_value (A['NoPP'], A:ORIGIN('NoPP'), cfg.keywords_lists['yes_true_y'], nil);
 
if utilities.is_set (PublicationPlace) and utilities.is_set (Place) then -- both |publication-place= and |place= (|location=) allowed if different
utilities.add_prop_cat ('location test'); -- add property cat to evaluate how often PublicationPlace and Place are used together
if PublicationPlace == Place then
Place = ''; -- unset; don't need both if they are the same
end
elseif not utilities.is_set (PublicationPlace) and utilities.is_set (Place) then -- when only |place= (|location=) is set ...
PublicationPlace = Place; -- promote |place= (|location=) to |publication-place
end
 
if PublicationPlace == Place then Place = ''; end -- don't need both if they are the same
local URL_origin = A:ORIGIN('URL'); -- get name of parameter that holds URL
local ChapterURL_origin = A:ORIGIN('ChapterURL'); -- get name of parameter that holds ChapterURL
local ScriptChapter = A['ScriptChapter'];
local ScriptChapter_origin = A:ORIGIN ('ScriptChapter');
local Format = A['Format'];
local ChapterFormat = A['ChapterFormat'];
local TransChapter = A['TransChapter'];
local TransChapter_origin = A:ORIGIN ('TransChapter');
local TransTitle = A['TransTitle'];
local ScriptTitle = A['ScriptTitle'];
--[[
Parameter remapping for cite encyclopedia:
When the citation has these parameters:
|encyclopedia= and |title= then map |title= to |article= and |encyclopedia= to |title=
|encyclopedia= and |article= then map |encyclopedia= to |title=
 
|trans-title= maps to |trans-chapter= when |title= is re-mapped
|url= maps to |chapter-url= when |title= is remapped
All other combinations of |encyclopedia=, |title=, and |article= are not modified
]]
 
local Encyclopedia = A['Encyclopedia']; -- used as a flag by this module and by ~/COinS
 
if utilities.is_set (Encyclopedia) then -- emit error message when Encyclopedia set but template is other than {{cite encyclopedia}} or {{citation}}
if 'encyclopaedia' ~= config.CitationClass and 'citation' ~= config.CitationClass then
table.insert (z.message_tail, {utilities.set_message ('err_parameter_ignored', {A:ORIGIN ('Encyclopedia')}, true)});
Encyclopedia = nil; -- unset because not supported by this template
end
end
 
if ('encyclopaedia' == config.CitationClass) or ('citation' == config.CitationClass and utilities.is_set (Encyclopedia)) then
if utilities.is_set (Periodical) and utilities.is_set (Encyclopedia) then -- when both set emit an error
table.insert (z.message_tail, {utilities.set_message ('err_redundant_parameters', {utilities.wrap_style ('parameter', A:ORIGIN ('Encyclopedia')) .. ' and ' .. utilities.wrap_style ('parameter', Periodical_origin)}, true )});
end
 
if utilities.is_set (Encyclopedia) then
Periodical = Encyclopedia; -- error or no, set Periodical to Encyclopedia; allow periodical without encyclopedia
Periodical_origin = A:ORIGIN ('Encyclopedia');
end
 
if utilities.is_set (Periodical) then -- Periodical is set when |encyclopedia= is set
if utilities.is_set (Title) or utilities.is_set (ScriptTitle) then
if not utilities.is_set (Chapter) then
Chapter = Title; -- |encyclopedia= and |title= are set so map |title= to |article= and |encyclopedia= to |title=
ScriptChapter = ScriptTitle;
ScriptChapter_origin = A:ORIGIN('ScriptTitle')
TransChapter = TransTitle;
ChapterURL = URL;
ChapterURL_origin = URL_origin;
 
ChapterUrlAccess = UrlAccess;
 
if not utilities.is_set (ChapterURL) and utilities.is_set (TitleLink) then
Chapter = utilities.make_wikilink (TitleLink, Chapter);
end
Title = Periodical;
ChapterFormat = Format;
Periodical = ''; -- redundant so unset
TransTitle = '';
URL = '';
Format = '';
TitleLink = '';
ScriptTitle = '';
end
elseif utilities.is_set (Chapter) then -- |title= not set
Title = Periodical; -- |encyclopedia= set and |article= set so map |encyclopedia= to |title=
Periodical = ''; -- redundant so unset
end
end
end
 
-- special case for cite techreport.
local ID = A['ID'];
if (config.CitationClass == "techreport") then -- special case for cite techreport
if utilities.is_set (A['Number']) then -- cite techreport uses 'number', which other citations alias to 'issue'
if not utilities.is_set (ID) then -- can we use ID for the "number"?
ID = A['Number']; -- yes, use it
else -- ID has a value so emit error message
table.insert( z.message_tail, { utilities.set_message ('err_redundant_parameters', {utilities.wrap_style ('parameter', 'id') .. ' and ' .. utilities.wrap_style ('parameter', 'number')}, true )});
end
end
end
 
-- Account for the oddity that is {{cite conference}}, before generation of COinS data.
local ChapterLink -- = A['ChapterLink']; -- deprecated as a parameter but still used internally by cite episode
local Conference = A['Conference'];
local BookTitle = A['BookTitle'];
local TransTitle_origin = A:ORIGIN ('TransTitle');
if 'conference' == config.CitationClass then
if utilities.is_set (BookTitle) then
Chapter = Title;
Chapter_origin = 'title';
-- ChapterLink = TitleLink; -- |chapter-link= is deprecated
ChapterURL = URL;
ChapterUrlAccess = UrlAccess;
ChapterURL_origin = URL_origin;
URL_origin = '';
ChapterFormat = Format;
TransChapter = TransTitle;
TransChapter_origin = TransTitle_origin;
Title = BookTitle;
Format = '';
-- TitleLink = '';
TransTitle = '';
URL = '';
end
elseif 'speech' ~= config.CitationClass then
Conference = ''; -- not cite conference or cite speech so make sure this is empty string
end
-- CS1/2 mode
local Mode = is_valid_parameter_value (A['Mode'], A:ORIGIN('Mode'), cfg.keywords_lists['mode'], '');
-- separator character and postscript
local sepc, PostScript = set_style (Mode:lower(), A['PostScript'], config.CitationClass);
-- controls capitalization of certain static text
local use_lowercase = ( sepc == ',' );
-- cite map oddities
local Cartography = "";
local Scale = "";
local Sheet = A['Sheet'] or '';
local Sheets = A['Sheets'] or '';
if config.CitationClass == "map" then
if utilities.is_set (Chapter) then
table.insert( z.message_tail, { utilities.set_message ( 'err_redundant_parameters', {utilities.wrap_style ('parameter', 'map') .. ' and ' .. utilities.wrap_style ('parameter', Chapter_origin)}, true ) } ); -- add error message
end
Chapter = A['Map'];
Chapter_origin = A:ORIGIN('Map');
ChapterURL = A['MapURL'];
ChapterURL_origin = A:ORIGIN('MapURL');
TransChapter = A['TransMap'];
ScriptChapter = A['ScriptMap']
ScriptChapter_origin = A:ORIGIN('ScriptMap')
 
ChapterUrlAccess = MapUrlAccess;
ChapterFormat = A['MapFormat'];
 
Cartography = A['Cartography'];
if utilities.is_set ( Cartography ) then
Cartography = sepc .. " " .. wrap_msg ('cartography', Cartography, use_lowercase);
end
Scale = A['Scale'];
if utilities.is_set ( Scale ) then
Scale = sepc .. " " .. Scale;
end
end
 
-- Account for the oddities that are {{cite episode}} and {{cite serial}}, before generation of COinS data.
local Series = A['Series'];
if 'episode' == config.CitationClass or 'serial' == config.CitationClass then
local SeriesLink = A['SeriesLink'];
 
SeriesLink = link_title_ok (SeriesLink, A:ORIGIN ('SeriesLink'), Series, 'series'); -- check for wiki-markup in |series-link= or wiki-markup in |series= when |series-link= is set
 
local Network = A['Network'];
local Station = A['Station'];
local s, n = {}, {};
-- do common parameters first
if utilities.is_set (Network) then table.insert(n, Network); end
if utilities.is_set (Station) then table.insert(n, Station); end
ID = table.concat(n, sepc .. ' ');
if 'episode' == config.CitationClass then -- handle the oddities that are strictly {{cite episode}}
local Season = A['Season'];
local SeriesNumber = A['SeriesNumber'];
 
if utilities.is_set (Season) and utilities.is_set (SeriesNumber) then -- these are mutually exclusive so if both are set
table.insert( z.message_tail, { utilities.set_message ( 'err_redundant_parameters', {utilities.wrap_style ('parameter', 'season') .. ' and ' .. utilities.wrap_style ('parameter', 'seriesno')}, true ) } ); -- add error message
SeriesNumber = ''; -- unset; prefer |season= over |seriesno=
end
-- assemble a table of parts concatenated later into Series
if utilities.is_set (Season) then table.insert(s, wrap_msg ('season', Season, use_lowercase)); end
if utilities.is_set (SeriesNumber) then table.insert(s, wrap_msg ('seriesnum', SeriesNumber, use_lowercase)); end
if utilities.is_set (Issue) then table.insert(s, wrap_msg ('episode', Issue, use_lowercase)); end
Issue = ''; -- unset because this is not a unique parameter
Chapter = Title; -- promote title parameters to chapter
ScriptChapter = ScriptTitle;
ScriptChapter_origin = A:ORIGIN('ScriptTitle');
ChapterLink = TitleLink; -- alias |episode-link=
TransChapter = TransTitle;
ChapterURL = URL;
ChapterUrlAccess = UrlAccess;
ChapterURL_origin = URL_origin;
Title = Series; -- promote series to title
TitleLink = SeriesLink;
Series = table.concat(s, sepc .. ' '); -- this is concatenation of season, seriesno, episode number
 
if utilities.is_set (ChapterLink) and not utilities.is_set (ChapterURL) then -- link but not URL
Chapter = utilities.make_wikilink (ChapterLink, Chapter);
elseif utilities.is_set (ChapterLink) and utilities.is_set (ChapterURL) then -- if both are set, URL links episode;
Series = utilities.make_wikilink (ChapterLink, Series);
end
URL = ''; -- unset
TransTitle = '';
ScriptTitle = '';
else -- now oddities that are cite serial
Issue = ''; -- unset because this parameter no longer supported by the citation/core version of cite serial
Chapter = A['Episode']; -- TODO: make |episode= available to cite episode someday?
if utilities.is_set (Series) and utilities.is_set (SeriesLink) then
Series = utilities.make_wikilink (SeriesLink, Series);
end
Series = utilities.wrap_style ('italic-title', Series); -- series is italicized
end
end
-- end of {{cite episode}} stuff
 
-- handle type parameter for those CS1 citations that have default values
local TitleType = A['TitleType'];
local Degree = A['Degree'];
if utilities.in_array (config.CitationClass, {"AV-media-notes", "interview", "mailinglist", "map", "podcast", "pressrelease", "report", "techreport", "thesis"}) then
TitleType = set_titletype (config.CitationClass, TitleType);
if utilities.is_set (Degree) and "Thesis" == TitleType then -- special case for cite thesis
TitleType = Degree .. ' ' .. cfg.title_types ['thesis']:lower();
end
end
 
if utilities.is_set (TitleType) then -- if type parameter is specified
TitleType = utilities.substitute ( cfg.messages['type'], TitleType); -- display it in parentheses
-- TODO: Hack on TitleType to fix bunched parentheses problem
end
 
-- legacy: promote PublicationDate to Date if neither Date nor Year are set.
local Date = A['Date'];
local Date_origin; -- to hold the name of parameter promoted to Date; required for date error messaging
local PublicationDate = A['PublicationDate'];
local Year = A['Year'];
 
if not utilities.is_set (Date) then
Date = Year; -- promote Year to Date
Year = nil; -- make nil so Year as empty string isn't used for CITEREF
if not utilities.is_set (Date) and utilities.is_set (PublicationDate) then -- use PublicationDate when |date= and |year= are not set
Date = PublicationDate; -- promote PublicationDate to Date
PublicationDate = ''; -- unset, no longer needed
Date_origin = A:ORIGIN('PublicationDate'); -- save the name of the promoted parameter
else
Date_origin = A:ORIGIN('Year'); -- save the name of the promoted parameter
end
else
Date_origin = A:ORIGIN('Date'); -- not a promotion; name required for error messaging
end
 
if PublicationDate == Date then PublicationDate = ''; end -- if PublicationDate is same as Date, don't display in rendered citation
 
--[[
Go test all of the date-holding parameters for valid MOS:DATE format and make sure that dates are real dates. This must be done before we do COinS because here is where
we get the date used in the metadata.
Date validation supporting code is in Module:Citation/CS1/Date_validation
]]
 
local DF = is_valid_parameter_value (A['DF'], A:ORIGIN('DF'), cfg.keywords_lists['df'], '');
if not utilities.is_set (DF) then
DF = cfg.global_df; -- local |df= if present overrides global df set by {{use xxx date}} template
end
 
local ArchiveURL;
local ArchiveDate;
local ArchiveFormat = A['ArchiveFormat'];
 
ArchiveURL, ArchiveDate = archive_url_check (A['ArchiveURL'], A['ArchiveDate'])
ArchiveFormat = style_format (ArchiveFormat, ArchiveURL, 'archive-format', 'archive-url');
ArchiveURL, ArchiveDate = is_unique_archive_url (ArchiveURL, URL, ChapterURL, A:ORIGIN('ArchiveURL'), ArchiveDate); -- add error message when URL or ChapterURL == ArchiveURL
 
local AccessDate = A['AccessDate'];
local LayDate = A['LayDate'];
local COinS_date = {}; -- holds date info extracted from |date= for the COinS metadata by Module:Date verification
local DoiBroken = A['DoiBroken'];
local Embargo = A['Embargo'];
local anchor_year; -- used in the CITEREF identifier
do -- create defined block to contain local variables error_message, date_parameters_list, mismatch
local error_message = '';
-- AirDate has been promoted to Date so not necessary to check it
local date_parameters_list = {
['access-date'] = {val = AccessDate, name = A:ORIGIN ('AccessDate')},
['archive-date'] = {val = ArchiveDate, name = A:ORIGIN ('ArchiveDate')},
['date'] = {val = Date, name = Date_origin},
['doi-broken-date'] = {val = DoiBroken, name = A:ORIGIN ('DoiBroken')},
['pmc-embargo-date'] = {val = Embargo, name = A:ORIGIN ('Embargo')},
['lay-date'] = {val = LayDate, name = A:ORIGIN ('LayDate')},
['publication-date'] = {val = PublicationDate, name = A:ORIGIN ('PublicationDate')},
['year'] = {val = Year, name = A:ORIGIN ('Year')},
};
 
local error_list = {};
anchor_year, Embargo = validation.dates(date_parameters_list, COinS_date, error_list);
 
-- start temporary Julian / Gregorian calendar uncertainty categorization
if COinS_date.inter_cal_cat then
utilities.add_prop_cat ('jul_greg_uncertainty');
end
-- end temporary Julian / Gregorian calendar uncertainty categorization
 
if utilities.is_set (Year) and utilities.is_set (Date) then -- both |date= and |year= not normally needed;
validation.year_date_check (Year, A:ORIGIN ('Year'), Date, A:ORIGIN ('Date'), error_list);
end
if 0 == #error_list then -- error free dates only; 0 when error_list is empty
local modified = false; -- flag
if validation.edtf_transform (date_parameters_list) then -- edtf dates to MOS compliant format
modified = true;
end
 
if utilities.is_set (DF) then -- if we need to reformat dates
modified = validation.reformat_dates (date_parameters_list, DF); -- reformat to DF format, use long month names if appropriate
end
 
if true == validation.date_hyphen_to_dash (date_parameters_list) then -- convert hyphens to dashes where appropriate
modified = true;
utilities.set_message ('maint_date_format'); -- hyphens were converted so add maint category
end
-- for those wikis that can and want to have English date names translated to the local language,
-- uncomment the next three lines.  Not supported by en.wiki (for obvious reasons)
-- set validation.date_name_xlate() second argument to true to translate English digits to local digits (will translate ymd dates)
-- if validation.date_name_xlate (date_parameters_list, false) then
-- modified = true;
-- end
 
if modified then -- if the date_parameters_list values were modified
AccessDate = date_parameters_list['access-date'].val; -- overwrite date holding parameters with modified values
ArchiveDate = date_parameters_list['archive-date'].val;
Date = date_parameters_list['date'].val;
DoiBroken = date_parameters_list['doi-broken-date'].val;
LayDate = date_parameters_list['lay-date'].val;
PublicationDate = date_parameters_list['publication-date'].val;
end
else
table.insert (z.message_tail, {utilities.set_message ('err_bad_date', {utilities.make_sep_list (#error_list, error_list)}, true)}); -- add this error message
end
end -- end of do
 
local ID_list = {}; -- sequence table of rendered identifiers
local ID_list_coins = {}; -- table of identifiers and their values from args; key is same as cfg.id_handlers's key
local Class = A['Class']; -- arxiv class identifier
local ID_support = {
{A['ASINTLD'], 'ASIN', 'err_asintld_missing_asin', A:ORIGIN ('ASINTLD')},
{DoiBroken, 'DOI', 'err_doibroken_missing_doi', A:ORIGIN ('DoiBroken')},
{Embargo, 'PMC', 'err_embargo_missing_pmc', A:ORIGIN ('Embargo')},
}
 
ID_list, ID_list_coins = identifiers.identifier_lists_get (args, {DoiBroken = DoiBroken, ASINTLD = A['ASINTLD'], Embargo = Embargo, Class = Class}, ID_support);
 
-- Account for the oddities that are {{cite arxiv}}, {{cite biorxiv}}, {{cite citeseerx}}, {{cite ssrn}}, before generation of COinS data.
if utilities.in_array (config.CitationClass, whitelist.preprint_template_list) then
if not utilities.is_set (ID_list_coins[config.CitationClass:upper()]) then -- |arxiv= or |eprint= required for cite arxiv; |biorxiv= & |citeseerx= required for their templates
table.insert (z.message_tail, {utilities.set_message ('err_' .. config.CitationClass .. '_missing', {}, true)}); -- add error message
end
 
Periodical = ({['arxiv'] = 'arXiv', ['biorxiv'] = 'bioRxiv', ['citeseerx'] = 'CiteSeerX', ['ssrn'] = 'Social Science Research Network'})[config.CitationClass];
end
 
-- Link the title of the work if no |url= was provided, but we have a |pmc= or a |doi= with |doi-access=free
 
if config.CitationClass == "journal" and not utilities.is_set (URL) and not utilities.is_set (TitleLink) and not utilities.in_array (cfg.keywords_xlate[Title], {'off', 'none'}) then -- TODO: remove 'none' once existing citations have been switched to 'off', so 'none' can be used as token for "no title" instead
if 'none' ~= cfg.keywords_xlate[auto_select] then -- if auto-linking not disabled
if identifiers.auto_link_urls[auto_select] then -- manual selection
URL = identifiers.auto_link_urls[auto_select]; -- set URL to be the same as identifier's external link
URL_origin = cfg.id_handlers[auto_select:upper()].parameters[1]; -- set URL_origin to parameter name for use in error message if citation is missing a |title=
elseif identifiers.auto_link_urls['pmc'] then -- auto-select PMC
URL = identifiers.auto_link_urls['pmc']; -- set URL to be the same as the PMC external link if not embargoed
URL_origin = cfg.id_handlers['PMC'].parameters[1]; -- set URL_origin to parameter name for use in error message if citation is missing a |title=
elseif identifiers.auto_link_urls['doi'] then -- auto-select DOI
URL = identifiers.auto_link_urls['doi'];
URL_origin = cfg.id_handlers['DOI'].parameters[1];
end
end
 
if utilities.is_set (URL) and utilities.is_set (AccessDate) then -- access date requires |url=; identifier-created URL is not |url=
table.insert( z.message_tail, { utilities.set_message ( 'err_accessdate_missing_url', {}, true ) } ); -- add an error message
AccessDate = ''; -- unset
end
end
 
-- At this point fields may be nil if they weren't specified in the template use.  We can use that fact.
-- Test if citation has no title
if not utilities.is_set (Title) and not utilities.is_set (TransTitle) and not utilities.is_set (ScriptTitle) then -- has special case for cite episode
table.insert( z.message_tail, { utilities.set_message ( 'err_citation_missing_title', {'episode' == config.CitationClass and 'series' or 'title'}, true ) } );
end
 
if utilities.in_array (cfg.keywords_xlate[Title], {'off', 'none'}) and
utilities.in_array (config.CitationClass, {'journal', 'citation'}) and
(utilities.is_set (Periodical) or utilities.is_set (ScriptPeriodical)) and
('journal' == Periodical_origin or 'script-journal' == ScriptPeriodical_origin) then -- special case for journal cites
Title = ''; -- set title to empty string
utilities.set_message ('maint_untitled'); -- add maint cat
end
 
check_for_url ({ -- add error message when any of these parameters hold a URL
['title'] = Title,
[A:ORIGIN('Chapter')] = Chapter,
[Periodical_origin] = Periodical,
[PublisherName_origin] = PublisherName
});
 
-- COinS metadata (see <http://ocoins.info/>) for automated parsing of citation information.
-- handle the oddity that is cite encyclopedia and {{citation |encyclopedia=something}}. Here we presume that
-- when Periodical, Title, and Chapter are all set, then Periodical is the book (encyclopedia) title, Title
-- is the article title, and Chapter is a section within the article.  So, we remap
local coins_chapter = Chapter; -- default assuming that remapping not required
local coins_title = Title; -- et tu
if 'encyclopaedia' == config.CitationClass or ('citation' == config.CitationClass and utilities.is_set (Encyclopedia)) then
if utilities.is_set (Chapter) and utilities.is_set (Title) and utilities.is_set (Periodical) then -- if all are used then
coins_chapter = Title; -- remap
coins_title = Periodical;
end
end
local coins_author = a; -- default for coins rft.au
if 0 < #c then -- but if contributor list
coins_author = c; -- use that instead
end
local QuotePage = A['QuotePage'];
local QuotePages = hyphen_to_dash (A['QuotePages']);
 
-- this is the function call to COinS()
local OCinSoutput = metadata.COinS({
['Periodical'] = utilities.strip_apostrophe_markup (Periodical), -- no markup in the metadata
['Encyclopedia'] = Encyclopedia, -- just a flag; content ignored by ~/COinS
['Chapter'] = metadata.make_coins_title (coins_chapter, ScriptChapter), -- Chapter and ScriptChapter stripped of bold / italic wiki-markup
['Degree'] = Degree; -- cite thesis only
['Title'] = metadata.make_coins_title (coins_title, ScriptTitle), -- Title and ScriptTitle stripped of bold / italic wiki-markup
['PublicationPlace'] = PublicationPlace,
['Date'] = COinS_date.rftdate, -- COinS_date has correctly formatted date if Date is valid;
['Season'] = COinS_date.rftssn,
['Quarter'] = COinS_date.rftquarter,
['Chron'] =  COinS_date.rftchron or (not COinS_date.rftdate and Date) or '', -- chron but if not set and invalid date format use Date; keep this last bit?
['Series'] = Series,
['Volume'] = Volume,
['Issue'] = Issue,
['Pages'] = coins_pages or metadata.get_coins_pages (first_set ({Sheet, Sheets, Page, Pages, At, QuotePage, QuotePages}, 7)), -- pages stripped of external links
['Edition'] = Edition,
['PublisherName'] = PublisherName or Newsgroup, -- any apostrophe markup already removed from PublisherName
['URL'] = first_set ({ChapterURL, URL}, 2),
['Authors'] = coins_author,
['ID_list'] = ID_list_coins,
['RawPage'] = this_page.prefixedText,
}, config.CitationClass);
 
-- Account for the oddities that are {{cite arxiv}}, {{cite biorxiv}}, {{cite citeseerx}}, and {{cite ssrn}} AFTER generation of COinS data.
if utilities.in_array (config.CitationClass, whitelist.preprint_template_list) then -- we have set rft.jtitle in COinS to arXiv, bioRxiv, CiteSeerX, or ssrn now unset so it isn't displayed
Periodical = ''; -- periodical not allowed in these templates; if article has been published, use cite journal
end
 
-- special case for cite newsgroup.  Do this after COinS because we are modifying Publishername to include some static text
if 'newsgroup' == config.CitationClass and utilities.is_set (Newsgroup) then
PublisherName = utilities.substitute (cfg.messages['newsgroup'], external_link( 'news:' .. Newsgroup, Newsgroup, Newsgroup_origin, nil ));
end


    local Coauthors = A['Coauthors'];
local Editors;
    local Others = A['Others'];
local EditorCount; -- used only for choosing {ed.) or (eds.) annotation at end of editor name-list
    local Editors = A['Editors'];
local Contributors; -- assembled contributors name list
    local e = extractnames( args, 'EditorList' );
local contributor_etal;
local Translators; -- assembled translators name list
local translator_etal;
local t = {}; -- translators list from |translator-lastn= / translator-firstn= pairs
t = extract_names (args, 'TranslatorList'); -- fetch translator list from |translatorn= / |translator-lastn=, -firstn=, -linkn=, -maskn=
local Interviewers;
local interviewers_list = {};
interviewers_list = extract_names (args, 'InterviewerList'); -- process preferred interviewers parameters
local interviewer_etal;
-- Now perform various field substitutions.
-- We also add leading spaces and surrounding markup and punctuation to the
-- various parts of the citation, but only when they are non-nil.
do
local last_first_list;
local control = {
format = NameListStyle, -- empty string or 'vanc'
maximum = nil, -- as if display-authors or display-editors not set
mode = Mode
};


    local Year = A['Year'];
do -- do editor name list first because the now unsupported coauthors used to modify control table
    local PublicationDate = A['PublicationDate'];
control.maximum , editor_etal = get_display_names (A['DisplayEditors'], #e, 'editors', editor_etal, A:ORIGIN ('DisplayEditors'));
    local OrigYear = A['OrigYear'];
Editors, EditorCount = list_people (control, e, editor_etal);
    local Date = A['Date'];
    local LayDate = A['LayDate'];
    ------------------------------------------------- Get title data
    local Title = A['Title'];
    local BookTitle = A['BookTitle'];
    local Conference = A['Conference'];
    local TransTitle = A['TransTitle'];
    local TitleNote = A['TitleNote'];
    local TitleLink = A['TitleLink'];
    local Chapter = A['Chapter'];
    local ChapterLink = A['ChapterLink'];
    local TransChapter = A['TransChapter'];
    local TitleType = A['TitleType'];
    local 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
        if not is_set(Chapter) then
            if not is_set(Title) then
                Title = Periodical;
                Periodical = '';
            else
                Chapter = Title
                TransChapter = TransTitle
                Title = '';
                TransTitle = '';
            end
        end
    end


    local Series = A['Series'];
if 1 == EditorCount and (true == editor_etal or 1 < #e) then -- only one editor displayed but includes etal then  
    local Volume = A['Volume'];
EditorCount = 2; -- spoof to display (eds.) annotation
    local Issue = A['Issue'];
end
    local Position = '';
end
    local Page, Pages, At, page_type;
do -- now do interviewers
   
control.maximum, interviewer_etal = get_display_names (A['DisplayInterviewers'], #interviewers_list, 'interviewers', interviewer_etal, A:ORIGIN ('DisplayInterviewers'));
    Page = A['Page'];
Interviewers = list_people (control, interviewers_list, interviewer_etal);
    Pages = hyphentodash( A['Pages'] );
end
    At = A['At'];
do -- now do translators
   
control.maximum, translator_etal = get_display_names (A['DisplayTranslators'], #t, 'translators', translator_etal, A:ORIGIN ('DisplayTranslators'));
    if is_set(Page) then
Translators = list_people (control, t, translator_etal);
        if is_set(Pages) or is_set(At) then
end
            Page = Page .. " " .. seterror('extra_pages');
do -- now do contributors
            Pages = '';
control.maximum, contributor_etal = get_display_names (A['DisplayContributors'], #c, 'contributors', contributor_etal, A:ORIGIN ('DisplayContributors'));
            At = '';
Contributors = list_people (control, c, contributor_etal);
        end
end
    elseif is_set(Pages) then
do -- now do authors
        if is_set(At) then
control.maximum, author_etal = get_display_names (A['DisplayAuthors'], #a, 'authors', author_etal, A:ORIGIN ('DisplayAuthors'));
            Pages = Pages .. " " .. seterror('extra_pages');
            At = '';
        end
    end  
   
    local Edition = A['Edition'];
    local PublicationPlace = A['PublicationPlace']
    local Place = A['Place'];
   
    if not is_set(PublicationPlace) and is_set(Place) then
        PublicationPlace = Place;
    end
   
    if PublicationPlace == Place then Place = ''; end
   
    local PublisherName = A['PublisherName'];
    local RegistrationRequired = A['RegistrationRequired'];
    local SubscriptionRequired = A['SubscriptionRequired'];
    local Via = A['Via'];
    local AccessDate = A['AccessDate'];
    local ArchiveDate = A['ArchiveDate'];
    local Agency = A['Agency'];
    local DeadURL = A['DeadURL']
    local Language = A['Language'];
    local Format = A['Format'];
    local Ref = A['Ref'];
   
    local DoiBroken = A['DoiBroken'];
    local ID = A['ID'];
    local ASINTLD = A['ASINTLD'];
    local IgnoreISBN = A['IgnoreISBN'];
    local Embargo = A['Embargo'];


    local ID_list = extractids( args );
last_first_list = list_people (control, a, author_etal);
   
    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'];


    local use_lowercase = ( sepc ~= '.' );
if utilities.is_set (Authors) then
    local this_page = mw.title.getCurrentTitle(); --Also used for COinS and for language
Authors, author_etal = name_has_etal (Authors, author_etal, false, 'authors'); -- find and remove variations on et al.
   
if author_etal then
    if not is_set(no_tracking_cats) then
Authors = Authors .. ' ' .. cfg.messages['et al']; -- add et al. to authors parameter
        for k, v in pairs( cfg.uncategorized_namespaces ) do
end
            if this_page.nsText == v then
else
                no_tracking_cats = "true";
Authors = last_first_list; -- either an author name list or an empty string
                break;
end
            end
end -- end of do
        end
    end
if utilities.is_set (Authors) and utilities.is_set (Collaboration) then
Authors = Authors .. ' (' .. Collaboration .. ')'; -- add collaboration after et al.
end


    -- At this point fields may be nil if they weren't specified in the template use.  We can use that fact.
end
   
    -- Account for the oddity that is {{cite conference}}, before generation of COinS data.
    if is_set(BookTitle) then
        Chapter = Title;
        ChapterLink = TitleLink;
        TransChapter = TransTitle;
        Title = BookTitle;
        TitleLink = '';
        TransTitle = '';
    end
    -- Account for the oddity that is {{cite episode}}, before generation of COinS data.
    if config.CitationClass == "episode" then
        local AirDate = A['AirDate'];
        local SeriesLink = A['SeriesLink'];
        local Season = A['Season'];
        local SeriesNumber = A['SeriesNumber'];
        local Network = A['Network'];
        local Station = A['Station'];
        local s, n = {}, {};
        local Sep = (first_set(A["SeriesSeparator"], A["Separator"]) or "") .. " ";
       
        if is_set(Issue) then table.insert(s, cfg.messages["episode"] .. " " .. Issue); Issue = ''; end
        if is_set(Season) then table.insert(s, cfg.messages["season"] .. " " .. Season); end
        if is_set(SeriesNumber) then table.insert(s, cfg.messages["series"] .. " " .. SeriesNumber); end
        if is_set(Network) then table.insert(n, Network); end
        if is_set(Station) then table.insert(n, Station); end
       
        Date = Date or AirDate;
        Chapter = Title;
        ChapterLink = TitleLink;
        TransChapter = TransTitle;
        Title = Series;
        TitleLink = SeriesLink;
        TransTitle = '';
       
        Series = table.concat(s, Sep);
        ID = table.concat(n, Sep);
    end
   
    -- COinS metadata (see <http://ocoins.info/>) for
    -- automated parsing of citation information.
    local OCinSoutput = COinS{
        ['Periodical'] = Periodical,
        ['Chapter'] = Chapter,
        ['Title'] = Title,
        ['PublicationPlace'] = PublicationPlace,
        ['Date'] = first_set(Date, Year, PublicationDate),
        ['Series'] = Series,
        ['Volume'] = Volume,
        ['Issue'] = Issue,
        ['Pages'] = first_set(Page, Pages, At),
        ['Edition'] = Edition,
        ['PublisherName'] = PublisherName,
        ['URL'] = first_set( URL, ChapterURL ),
        ['Authors'] = a,
        ['ID_list'] = ID_list,
        ['RawPage'] = this_page.prefixedText,
    };


    if is_set(Periodical) and not is_set(Chapter) and is_set(Title) then
local ConferenceFormat = A['ConferenceFormat'];
        Chapter = Title;
local ConferenceURL = A['ConferenceURL'];
        ChapterLink = TitleLink;
ConferenceFormat = style_format (ConferenceFormat, ConferenceURL, 'conference-format', 'conference-url');
        TransChapter = TransTitle;
Format = style_format (Format, URL, 'format', 'url');
        Title = '';
        TitleLink = '';
        TransTitle = '';
    end


    -- Now perform various field substitutions.
-- special case for chapter format so no error message or cat when chapter not supported
    -- We also add leading spaces and surrounding markup and punctuation to the
if not (utilities.in_array (config.CitationClass, {'web', 'news', 'journal', 'magazine', 'pressrelease', 'podcast', 'newsgroup', 'arxiv', 'biorxiv', 'citeseerx', 'ssrn'}) or
    -- various parts of the citation, but only when they are non-nil.
('citation' == config.CitationClass and (utilities.is_set (Periodical) or utilities.is_set (ScriptPeriodical)) and not utilities.is_set (Encyclopedia))) then
    if not is_set(Authors) then
ChapterFormat = style_format (ChapterFormat, ChapterURL, 'chapter-format', 'chapter-url');
        local Maximum = tonumber( A['DisplayAuthors'] );
end
       
        -- Preserve old-style implicit et al.
        if not is_set(Maximum) and #a == 9 then
            Maximum = 8;
            table.insert( z.message_tail, { seterror('implict_etal_author', {}, true ) } );
        elseif not is_set(Maximum) then
            Maximum = #a + 1;
        end
           
        local control = {
            sep = A["AuthorSeparator"] .. " ",
            namesep = (first_set(A["AuthorNameSeparator"], A["NameSeparator"]) or "") .. " ",
            format = A["AuthorFormat"],
            maximum = Maximum,
            lastauthoramp = LastAuthorAmp
        };
       
        -- If the coauthor field is also used, prevent ampersand and et al. formatting.
        if is_set(Coauthors) then
            control.lastauthoramp = nil;
            control.maximum = #a + 1;
        end
       
        Authors = listpeople(control, a)  
    end


if not is_set(Authors) and is_set(Coauthors) then -- coauthors aren't displayed if one of authors=, authorn=, or lastn= isn't specified
if not utilities.is_set (URL) then
table.insert( z.message_tail, { seterror('coauthors_missing_author', {}, true) } ); -- emit error message
if utilities.in_array (config.CitationClass, {"web", "podcast", "mailinglist"}) or -- |url= required for cite web, cite podcast, and cite mailinglist
('citation' == config.CitationClass and ('website' == Periodical_origin or 'script-website' == ScriptPeriodical_origin)) then -- and required for {{citation}} with |website= or |script-website=
table.insert( z.message_tail, { utilities.set_message ( 'err_cite_web_url', {}, true ) } );
end
-- do we have |accessdate= without either |url= or |chapter-url=?
if utilities.is_set (AccessDate) and not utilities.is_set (ChapterURL) then -- ChapterURL may be set when URL is not set;
table.insert( z.message_tail, { utilities.set_message ( 'err_accessdate_missing_url', {}, true ) } );
AccessDate = '';
end
end
end


    local EditorCount
local UrlStatus = is_valid_parameter_value (A['UrlStatus'], A:ORIGIN('UrlStatus'), cfg.keywords_lists['url-status'], '');
    if not is_set(Editors) then
local OriginalURL
        local Maximum = tonumber( A['DisplayEditors'] );
local OriginalURL_origin
        -- Preserve old-style implicit et al.
local OriginalFormat
        if not is_set(Maximum) and #e == 4 then  
local OriginalAccess;
            Maximum = 3;
UrlStatus = UrlStatus:lower(); -- used later when assembling archived text
            table.insert( z.message_tail, { seterror('implict_etal_editor', {}, true) } );
if utilities.is_set ( ArchiveURL ) then
        elseif not is_set(Maximum) then
if utilities.is_set (ChapterURL) then -- if chapter-url= is set apply archive url to it
            Maximum = #e + 1;
OriginalURL = ChapterURL; -- save copy of source chapter's url for archive text
        end
OriginalURL_origin = ChapterURL_origin; -- name of |chapter-url= parameter for error messages
OriginalFormat = ChapterFormat; -- and original |chapter-format=


        local control = {
if 'live' ~= UrlStatus then
            sep = A["EditorSeparator"] .. " ",
ChapterURL = ArchiveURL -- swap-in the archive's URL
            namesep = (first_set(A["EditorNameSeparator"], A["NameSeparator"]) or "") .. " ",
ChapterURL_origin = A:ORIGIN('ArchiveURL') -- name of |archive-url= parameter for error messages
            format = A['EditorFormat'],
ChapterFormat = ArchiveFormat or ''; -- swap in archive's format
            maximum = Maximum,
ChapterUrlAccess = nil; -- restricted access levels do not make sense for archived URLs
            lastauthoramp = LastAuthorAmp
end
        };
elseif utilities.is_set (URL) then
OriginalURL = URL; -- save copy of original source URL
OriginalURL_origin = URL_origin; -- name of URL parameter for error messages
OriginalFormat = Format; -- and original |format=
OriginalAccess = UrlAccess;


        Editors, EditorCount = listpeople(control, e);
if 'live' ~= UrlStatus then -- if URL set then |archive-url= applies to it
    else
URL = ArchiveURL -- swap-in the archive's URL
        EditorCount = 1;
URL_origin = A:ORIGIN('ArchiveURL') -- name of archive URL parameter for error messages
    end
Format = ArchiveFormat or ''; -- swap in archive's format
UrlAccess = nil; -- restricted access levels do not make sense for archived URLs
end
end
end


    local Cartography = "";
if utilities.in_array (config.CitationClass, {'web', 'news', 'journal', 'magazine', 'pressrelease', 'podcast', 'newsgroup', 'arxiv', 'biorxiv', 'citeseerx', 'ssrn'}) or -- if any of the 'periodical' cites except encyclopedia
    local Scale = "";
('citation' == config.CitationClass and (utilities.is_set (Periodical) or utilities.is_set (ScriptPeriodical)) and not utilities.is_set (Encyclopedia)) then
    if config.CitationClass == "map" then
local chap_param;
        if not is_set( Authors ) and is_set( PublisherName ) then
if utilities.is_set (Chapter) then -- get a parameter name from one of these chapter related meta-parameters
            Authors = PublisherName;
chap_param = A:ORIGIN ('Chapter')
            PublisherName = "";
elseif utilities.is_set (TransChapter) then
        end
chap_param = A:ORIGIN ('TransChapter')
        Cartography = A['Cartography'];
elseif utilities.is_set (ChapterURL) then
        if is_set( Cartography ) then
chap_param = A:ORIGIN ('ChapterURL')
            Cartography = sepc .. " " .. wrap( 'cartography', Cartography, use_lowercase );
elseif utilities.is_set (ScriptChapter) then
        end      
chap_param = ScriptChapter_origin;
        Scale = A['Scale'];
else utilities.is_set (ChapterFormat)
        if is_set( Scale ) then
chap_param = A:ORIGIN ('ChapterFormat')
            Scale = sepc .. " " .. Scale;
end
        end      
 
    end
if utilities.is_set (chap_param) then -- if we found one
   
table.insert( z.message_tail, { utilities.set_message ( 'err_chapter_ignored', {chap_param}, true ) } ); -- add error message
    if not is_set(Date) then
Chapter = ''; -- and set them to empty string to be safe with concatenation
        Date = Year;
TransChapter = '';
        if is_set(Date) then
ChapterURL = '';
            local Month = A['Month'];
ScriptChapter = '';
            if is_set(Month) then  
ChapterFormat = '';
                Date = Month .. " " .. Date;
end
                local Day = A['Day']
else -- otherwise, format chapter / article title
                if is_set(Day) then Date = Day .. " " .. Date end
local no_quotes = false; -- default assume that we will be quoting the chapter parameter value
            end
if utilities.is_set (Contribution) and 0 < #c then -- if this is a contribution with contributor(s)
        end
if utilities.in_array (Contribution:lower(), cfg.keywords_lists.contribution) then -- and a generic contribution title
    end
no_quotes = true; -- then render it unquoted
   
end
    if inArray(PublicationDate, {Date, Year}) then PublicationDate = ''; end
end
    if not is_set(Date) and is_set(PublicationDate) then
 
        Date = PublicationDate;
Chapter = format_chapter_title (ScriptChapter, ScriptChapter_origin, Chapter, Chapter_origin, TransChapter, TransChapter_origin, ChapterURL, ChapterURL_origin, no_quotes, ChapterUrlAccess); -- Contribution is also in Chapter
        PublicationDate = '';
if utilities.is_set (Chapter) then
    end
Chapter = Chapter .. ChapterFormat ;
if 'map' == config.CitationClass and utilities.is_set (TitleType) then
Chapter = Chapter .. ' ' .. TitleType; -- map annotation here; not after title
end
Chapter = Chapter .. sepc .. ' ';
elseif utilities.is_set (ChapterFormat) then -- |chapter= not set but |chapter-format= is so ...
Chapter = ChapterFormat .. sepc .. ' '; -- ... ChapterFormat has error message, we want to see it
end
end
 
-- Format main title
local plain_title = false;
local accept_title;
Title, accept_title = utilities.has_accept_as_written (Title, true); -- remove accept-this-as-written markup when it wraps all of <Title>
if accept_title and ('' == Title) then -- only support forced empty for now "(())"
Title = cfg.messages['notitle']; -- replace by predefined "No title" message
-- TODO: utilities.set_message ( 'err_redundant_parameters', ...); -- issue proper error message instead of muting
ScriptTitle = ''; -- just mute for now
TransTitle = ''; -- just mute for now
plain_title = true; -- suppress text decoration for descriptive title
utilities.set_message ('maint_untitled'); -- add maint cat
end
 
if not accept_title then -- <Title> not wrapped in accept-as-written markup
if '...' == Title:sub (-3) then -- if ellipsis is the last three characters of |title=
Title = Title:gsub ('(%.%.%.)%.+$', '%1'); -- limit the number of dots to three
elseif not mw.ustring.find (Title, '%.%s*%a%.$') and -- end of title is not a 'dot-(optional space-)letter-dot' initialism ...
not mw.ustring.find (Title, '%s+%a%.$') then -- ...and not a 'space-letter-dot' initial (''Allium canadense'' L.)
Title = mw.ustring.gsub(Title, '%' .. sepc .. '$', ''); -- remove any trailing separator character; sepc and ms.ustring() here for languages that use multibyte separator characters
end
 
if utilities.is_set (ArchiveURL) and is_archived_copy (Title) then
utilities.set_message ('maint_archived_copy'); -- add maintenance category before we modify the content of Title
end
 
if is_generic_title (Title) then
table.insert (z.message_tail, {utilities.set_message ( 'err_generic_title', {}, true ) } ); -- set an error message
end
end
 
if (not plain_title) and (utilities.in_array (config.CitationClass, {'web', 'news', 'journal', 'magazine', 'pressrelease', 'podcast', 'newsgroup', 'mailinglist', 'interview', 'arxiv', 'biorxiv', 'citeseerx', 'ssrn'}) or
('citation' == config.CitationClass and (utilities.is_set (Periodical) or utilities.is_set (ScriptPeriodical)) and not utilities.is_set (Encyclopedia)) or
('map' == config.CitationClass and (utilities.is_set (Periodical) or utilities.is_set (ScriptPeriodical)))) then -- special case for cite map when the map is in a periodical treat as an article
Title = kern_quotes (Title); -- if necessary, separate title's leading and trailing quote marks from module provided quote marks
Title = utilities.wrap_style ('quoted-title', Title);
Title = script_concatenate (Title, ScriptTitle, 'script-title'); -- <bdi> tags, lang attribute, categorization, etc.; must be done after title is wrapped
TransTitle = utilities.wrap_style ('trans-quoted-title', TransTitle );
elseif plain_title or ('report' == config.CitationClass) then -- no styling for cite report and descriptive titles (otherwise same as above)
Title = script_concatenate (Title, ScriptTitle, 'script-title'); -- <bdi> tags, lang attribute, categorization, etc.; must be done after title is wrapped
TransTitle = utilities.wrap_style ('trans-quoted-title', TransTitle ); -- for cite report, use this form for trans-title
else
Title = utilities.wrap_style ('italic-title', Title);
Title = script_concatenate (Title, ScriptTitle, 'script-title'); -- <bdi> tags, lang attribute, categorization, etc.; must be done after title is wrapped
TransTitle = utilities.wrap_style ('trans-italic-title', TransTitle);
end
 
local TransError = "";
if utilities.is_set (TransTitle) then
if utilities.is_set (Title) then
TransTitle = " " .. TransTitle;
else
TransError = " " .. utilities.set_message ( 'err_trans_missing_title', {'title'} );
end
end
 
if utilities.is_set (Title) then -- TODO: is this the right place to be making Wikisource URLs?
if utilities.is_set (TitleLink) and utilities.is_set (URL) then
table.insert( z.message_tail, { utilities.set_message ( 'err_wikilink_in_url', {}, true ) } ); -- set an error message because we can't have both
TitleLink = ''; -- unset
end
if not utilities.is_set (TitleLink) and utilities.is_set (URL) then
Title = external_link (URL, Title, URL_origin, UrlAccess) .. TransTitle .. TransError .. Format;
URL = ''; -- unset these because no longer needed
Format = "";
elseif utilities.is_set (TitleLink) and not utilities.is_set (URL) then
local ws_url;
ws_url = wikisource_url_make (TitleLink); -- ignore ws_label return; not used here
if ws_url then
Title = external_link (ws_url, Title .. '&nbsp;', 'ws link in title-link'); -- space char after Title to move icon away from italic text; TODO: a better way to do this?
Title = utilities.substitute (cfg.presentation['interwiki-icon'], {cfg.presentation['class-wikisource'], TitleLink, Title});
Title = Title .. TransTitle .. TransError;
else
Title = utilities.make_wikilink (TitleLink, Title) .. TransTitle .. TransError;
end
else
local ws_url, ws_label, L; -- Title has italic or quote markup by the time we get here which causes is_wikilink() to return 0 (not a wikilink)
ws_url, ws_label, L = wikisource_url_make (Title:gsub('^[\'"]*(.-)[\'"]*$', '%1')); -- make ws URL from |title= interwiki link (strip italic or quote markup); link portion L becomes tooltip label
if ws_url then
Title = Title:gsub ('%b[]', ws_label); -- replace interwiki link with ws_label to retain markup
Title = external_link (ws_url, Title .. '&nbsp;', 'ws link in title'); -- space char after Title to move icon away from italic text; TODO: a better way to do this?
Title = utilities.substitute (cfg.presentation['interwiki-icon'], {cfg.presentation['class-wikisource'], L, Title});
Title = Title .. TransTitle .. TransError;
else
Title = Title .. TransTitle .. TransError;
end
end
else
Title = TransTitle .. TransError;
end
 
if utilities.is_set (Place) then
Place = " " .. wrap_msg ('written', Place, use_lowercase) .. sepc .. " ";
end
 
local ConferenceURL_origin = A:ORIGIN('ConferenceURL'); -- get name of parameter that holds ConferenceURL
if utilities.is_set (Conference) then
if utilities.is_set (ConferenceURL) then
Conference = external_link( ConferenceURL, Conference, ConferenceURL_origin, nil );
end
Conference = sepc .. " " .. Conference .. ConferenceFormat;
elseif utilities.is_set (ConferenceURL) then
Conference = sepc .. " " .. external_link( ConferenceURL, nil, ConferenceURL_origin, nil );
end
 
local Position = '';
if not utilities.is_set (Position) then
local Minutes = A['Minutes'];
local Time = A['Time'];
 
if utilities.is_set (Minutes) then
if utilities.is_set (Time) then
table.insert( z.message_tail, { utilities.set_message ( 'err_redundant_parameters', {utilities.wrap_style ('parameter', 'minutes') .. ' and ' .. utilities.wrap_style ('parameter', 'time')}, true ) } );
end
Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
else
if utilities.is_set (Time) then
local TimeCaption = A['TimeCaption']
if not utilities.is_set (TimeCaption) then
TimeCaption = cfg.messages['event'];
if sepc ~= '.' then
TimeCaption = TimeCaption:lower();
end
end
Position = " " .. TimeCaption .. " " .. Time;
end
end
else
Position = " " .. Position;
At = '';
end
 
Page, Pages, Sheet, Sheets = format_pages_sheets (Page, Pages, Sheet, Sheets, config.CitationClass, Periodical_origin, sepc, NoPP, use_lowercase);
 
At = utilities.is_set (At) and (sepc .. " " .. At) or "";
Position = utilities.is_set (Position) and (sepc .. " " .. Position) or "";
if config.CitationClass == 'map' then
local Sections = A['Sections']; -- Section (singular) is an alias of Chapter so set earlier
local Inset = A['Inset'];
if utilities.is_set ( Inset ) then
Inset = sepc .. " " .. wrap_msg ('inset', Inset, use_lowercase);
end
 
if utilities.is_set ( Sections ) then
Section = sepc .. " " .. wrap_msg ('sections', Sections, use_lowercase);
elseif utilities.is_set ( Section ) then
Section = sepc .. " " .. wrap_msg ('section', Section, use_lowercase);
end
At = At .. Inset .. Section;
end
 
local Others = A['Others'];
if utilities.is_set (Others) and 0 == #a and 0 == #e then -- add maint cat when |others= has value and used without |author=, |editor=
if config.CitationClass == "AV-media-notes"
or config.CitationClass == "audio-visual" then -- special maint for AV/M which has a lot of 'false' positives right now
utilities.set_message ('maint_others_avm')
else
utilities.set_message ('maint_others');
end
end
Others = utilities.is_set (Others) and (sepc .. " " .. Others) or "";
if utilities.is_set (Translators) then
Others = safe_join ({sepc .. ' ', wrap_msg ('translated', Translators, use_lowercase), Others}, sepc);
end
if utilities.is_set (Interviewers) then
Others = safe_join ({sepc .. ' ', wrap_msg ('interview', Interviewers, use_lowercase), Others}, sepc);
end
local TitleNote = A['TitleNote'];
TitleNote = utilities.is_set (TitleNote) and (sepc .. " " .. TitleNote) or "";
if utilities.is_set (Edition) then
if Edition:match ('%f[%a][Ee]d%n?%.?$') or Edition:match ('%f[%a][Ee]dition$') then -- Ed, ed, Ed., ed., Edn, edn, Edn., edn.
table.insert( z.message_tail, { utilities.set_message ( 'err_extra_text_edition')}); -- add error
end
Edition = " " .. wrap_msg ('edition', Edition);
else
Edition = '';
end
 
Series = utilities.is_set (Series) and wrap_msg ('series', {sepc, Series}) or ""; -- not the same as SeriesNum
local Agency = A['Agency'];
Agency = utilities.is_set (Agency) and wrap_msg ('agency', {sepc, Agency}) or "";
Volume = format_volume_issue (Volume, Issue, config.CitationClass, Periodical_origin, sepc, use_lowercase);
 
if utilities.is_set (AccessDate) then
local retrv_text = " " .. cfg.messages['retrieved']
 
AccessDate = nowrap_date (AccessDate); -- wrap in nowrap span if date in appropriate format
if (sepc ~= ".") then retrv_text = retrv_text:lower() end -- if mode is cs2, lower case
AccessDate = utilities.substitute (retrv_text, AccessDate); -- add retrieved text
 
AccessDate = utilities.substitute (cfg.presentation['accessdate'], {sepc, AccessDate}); -- allow editors to hide accessdates
end
if utilities.is_set (ID) then ID = sepc .. " " .. ID; end
local Docket = A['Docket'];
  if "thesis" == config.CitationClass and utilities.is_set (Docket) then
ID = sepc .. " Docket " .. Docket .. ID;
end
  if "report" == config.CitationClass and utilities.is_set (Docket) then -- for cite report when |docket= is set
ID = sepc .. ' ' .. Docket; -- overwrite ID even if |id= is set
end
 
if utilities.is_set (URL) then
URL = " " .. external_link( URL, nil, URL_origin, UrlAccess );
end
 
local Quote = A['Quote'];
local TransQuote = A['TransQuote'];
local ScriptQuote = A['ScriptQuote'];
if utilities.is_set (Quote) or utilities.is_set (TransQuote) or utilities.is_set (ScriptQuote) then
 
if utilities.is_set (Quote) then
if Quote:sub(1, 1) == '"' and Quote:sub(-1, -1) == '"' then -- if first and last characters of quote are quote marks
Quote = Quote:sub(2, -2); -- strip them off
end
end
 
Quote = utilities.wrap_style ('quoted-text', Quote ); -- wrap in <q>...</q> tags
if utilities.is_set (ScriptQuote) then
Quote = script_concatenate (Quote, ScriptQuote, 'script-quote'); -- <bdi> tags, lang attribute, categorization, etc.; must be done after quote is wrapped
end
 
if utilities.is_set (TransQuote) then
if TransQuote:sub(1, 1) == '"' and TransQuote:sub(-1, -1) == '"' then -- if first and last characters of |trans-quote are quote marks
TransQuote = TransQuote:sub(2, -2); -- strip them off
end
Quote = Quote .. " " .. utilities.wrap_style ('trans-quoted-title', TransQuote );
end
 
if utilities.is_set (QuotePage) or utilities.is_set (QuotePages) then -- add page prefix
local quote_prefix = '';
if utilities.is_set (QuotePage) then
extra_text_in_page_check (QuotePage, 'quote-page'); -- add to maint cat if |quote-page= value begins with what looks like p., pp., etc.
if not NoPP then
quote_prefix = utilities.substitute (cfg.messages['p-prefix'], {sepc, QuotePage}), '', '', '';
else
quote_prefix = utilities.substitute (cfg.messages['nopp'], {sepc, QuotePage}), '', '', '';
end
elseif utilities.is_set (QuotePages) then
extra_text_in_page_check (QuotePages, 'quote-pages'); -- add to maint cat if |quote-pages= value begins with what looks like p., pp., etc.
if tonumber(QuotePages) ~= nil and not NoPP then -- if only digits, assume single page
quote_prefix = utilities.substitute (cfg.messages['p-prefix'], {sepc, QuotePages}), '', '';
elseif not NoPP then
quote_prefix = utilities.substitute (cfg.messages['pp-prefix'], {sepc, QuotePages}), '', '';
else
quote_prefix = utilities.substitute (cfg.messages['nopp'], {sepc, QuotePages}), '', '';
end
end
                       
Quote = quote_prefix .. ": " .. Quote;
else
Quote = sepc .. " " .. Quote;
end
 
PostScript = ""; -- cs1|2 does not supply terminal punctuation when |quote= is set
end
-- We check length of PostScript here because it will have been nuked by
-- the quote parameters. We'd otherwise emit a message even if there wasn't
-- a displayed postscript.
-- TODO: Should the max size (1) be configurable?
-- TODO: Should we check a specific pattern?
if utilities.is_set(PostScript) and mw.ustring.len(PostScript) > 1 then
utilities.set_message('maint_postscript')
end
local Archived
if utilities.is_set (ArchiveURL) then
local arch_text;
if not utilities.is_set (ArchiveDate) then
ArchiveDate = utilities.set_message ('err_archive_missing_date');
end
if "live" == UrlStatus then
arch_text = cfg.messages['archived'];
if sepc ~= "." then arch_text = arch_text:lower() end
Archived = sepc .. " " .. utilities.substitute ( cfg.messages['archived-live'],
{ external_link( ArchiveURL, arch_text, A:ORIGIN('ArchiveURL'), nil ) .. ArchiveFormat, ArchiveDate } );
if not utilities.is_set (OriginalURL) then
Archived = Archived .. " " .. utilities.set_message ('err_archive_missing_url');  
end
elseif utilities.is_set (OriginalURL) then -- UrlStatus is empty, 'dead', 'unfit', 'usurped', 'bot: unknown'
if utilities.in_array (UrlStatus, {'unfit', 'usurped', 'bot: unknown'}) then
arch_text = cfg.messages['archived-unfit'];
if sepc ~= "." then arch_text = arch_text:lower() end
Archived = sepc .. " " .. arch_text .. ArchiveDate; -- format already styled
if 'bot: unknown' == UrlStatus then
utilities.set_message ('maint_bot_unknown'); -- and add a category if not already added
else
utilities.set_message ('maint_unfit'); -- and add a category if not already added
end
else -- UrlStatus is empty, 'dead'
arch_text = cfg.messages['archived-dead'];
if sepc ~= "." then arch_text = arch_text:lower() end
Archived = sepc .. " " .. utilities.substitute ( arch_text,
{ external_link( OriginalURL, cfg.messages['original'], OriginalURL_origin, OriginalAccess ) .. OriginalFormat, ArchiveDate } ); -- format already styled
end
else -- OriginalUrl not set
arch_text = cfg.messages['archived-missing'];
if sepc ~= "." then arch_text = arch_text:lower() end
Archived = sepc .. " " .. utilities.substitute ( arch_text,
{ utilities.set_message ('err_archive_missing_url'), ArchiveDate } );
end
elseif utilities.is_set (ArchiveFormat) then
Archived = ArchiveFormat; -- if set and ArchiveURL not set ArchiveFormat has error message
else
Archived = ""
end
local Lay = '';
local LaySource = A['LaySource'];
local LayURL = A['LayURL'];
local LayFormat = A['LayFormat'];
LayFormat = style_format (LayFormat, LayURL, 'lay-format', 'lay-url');
if utilities.is_set (LayURL) then
if utilities.is_set (LayDate) then LayDate = " (" .. LayDate .. ")" end
if utilities.is_set (LaySource) then
LaySource = " &ndash; ''" .. utilities.safe_for_italics (LaySource) .. "''";
else
LaySource = "";
end
if sepc == '.' then
Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary'], A:ORIGIN('LayURL'), nil ) .. LayFormat .. LaySource .. LayDate
else
Lay = sepc .. " " .. external_link( LayURL, cfg.messages['lay summary']:lower(), A:ORIGIN('LayURL'), nil ) .. LayFormat .. LaySource .. LayDate
end
elseif utilities.is_set (LayFormat) then -- Test if |lay-format= is given without giving a |lay-url=
Lay = sepc .. LayFormat; -- if set and LayURL not set, then LayFormat has error message
end


    -- Captures the value for Date prior to adding parens or other textual transformations
local TranscriptURL = A['TranscriptURL']
    local DateIn = Date;
local TranscriptFormat = A['TranscriptFormat'];
   
TranscriptFormat = style_format (TranscriptFormat, TranscriptURL, 'transcript-format', 'transcripturl');
    if  not is_set(URL) and
local Transcript = A['Transcript'];
        not is_set(ChapterURL) and
local TranscriptURL_origin = A:ORIGIN('TranscriptURL'); -- get name of parameter that holds TranscriptURL
        not is_set(ArchiveURL) and
if utilities.is_set (Transcript) then
        not is_set(ConferenceURL) and
if utilities.is_set (TranscriptURL) then
        not is_set(TranscriptURL) then
Transcript = external_link( TranscriptURL, Transcript, TranscriptURL_origin, nil );
       
end
        -- Test if cite web is called without giving a URL
Transcript = sepc .. ' ' .. Transcript .. TranscriptFormat;
        if ( config.CitationClass == "web" ) then
elseif utilities.is_set (TranscriptURL) then
            table.insert( z.message_tail, { seterror( 'cite_web_url', {}, true ) } );
Transcript = external_link( TranscriptURL, nil, TranscriptURL_origin, nil );
        end
end
       
        -- Test if accessdate is given without giving a URL
        if is_set(AccessDate) then
            table.insert( z.message_tail, { seterror( 'accessdate_missing_url', {}, true ) } );
            AccessDate = '';
        end
       
        -- Test if format is given without giving a URL
        if is_set(Format) then
            Format = Format .. seterror( 'format_missing_url' );
        end
    end
   
    -- Test if citation has no title
    if  not is_set(Chapter) and
        not is_set(Title) and
        not is_set(Periodical) and
        not is_set(Conference) and
        not is_set(TransTitle) and
        not is_set(TransChapter) then
        table.insert( z.message_tail, { seterror( 'citation_missing_title', {}, true ) } );
    end
   
    Format = is_set(Format) and " (" .. Format .. ")" or "";
   
    local OriginalURL = URL
    DeadURL = DeadURL:lower();
    if is_set( ArchiveURL ) then
        if ( DeadURL ~= "no" ) then
            URL = ArchiveURL
            URLorigin = A:ORIGIN('ArchiveURL')
        end
    end
   
    -- Format chapter / article title
    if is_set(Chapter) and is_set(ChapterLink) then
        Chapter = "[[" .. ChapterLink .. "|" .. Chapter .. "]]";
    end
    if is_set(Periodical) and is_set(Title) then
        Chapter = wrap( 'italic-title', Chapter );
        TransChapter = wrap( 'trans-italic-title', TransChapter );
    else
        Chapter = wrap( 'quoted-title', Chapter );
        TransChapter = wrap( 'trans-quoted-title', TransChapter );
    end
   
    local TransError = ""
    if is_set(TransChapter) then
        if not is_set(Chapter) then
            TransError = " " .. seterror( 'trans_missing_chapter' );
        else
            TransChapter = " " .. TransChapter;
        end
    end
   
    Chapter = Chapter .. TransChapter;
   
    if is_set(Chapter) then
        if not is_set(ChapterLink) then
            if is_set(ChapterURL) then
                Chapter = externallink( ChapterURL, Chapter ) .. TransError;
                if not is_set(URL) then
                    Chapter = Chapter .. Format;
                    Format = "";
                end
            elseif is_set(URL) then
                Chapter = externallink( URL, Chapter ) .. TransError .. Format;
                URL = "";
                Format = "";
            else
                Chapter = Chapter .. TransError;
            end           
        elseif is_set(ChapterURL) then
            Chapter = Chapter .. " " .. externallink( ChapterURL, nil, ChapterURLorigin ) ..
                TransError;
        else
            Chapter = Chapter .. TransError;
        end
        Chapter = Chapter .. sepc .. " " -- with end-space
    elseif is_set(ChapterURL) then
        Chapter = " " .. externallink( ChapterURL, nil, ChapterURLorigin ) .. sepc .. " ";
    end       
   
    -- Format main title.
    if is_set(TitleLink) and is_set(Title) then
        Title = "[[" .. 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
        Title = wrap( 'italic-title', Title );
        TransTitle = wrap( 'trans-italic-title', TransTitle );
    end
   
    TransError = "";
    if is_set(TransTitle) then
        if not is_set(Title) then
            TransError = " " .. seterror( 'trans_missing_title' );
        else
            TransTitle = " " .. TransTitle;
        end
    end
   
    Title = Title .. TransTitle;
   
    if is_set(Title) then
        if not is_set(TitleLink) and is_set(URL) then
            Title = externallink( URL, Title ) .. TransError .. Format     
            URL = "";
            Format = "";
        else
            Title = Title .. TransError;
        end
    end
   
    if is_set(Place) then
        Place = " " .. wrap( 'written', Place, use_lowercase ) .. sepc .. " ";
    end
   
    if is_set(Conference) then
        if is_set(ConferenceURL) then
            Conference = externallink( ConferenceURL, Conference );
        end
        Conference = sepc .. " " .. Conference
    elseif is_set(ConferenceURL) then
        Conference = sepc .. " " .. externallink( ConferenceURL, nil, ConferenceURLorigin );
    end
   
    if not is_set(Position) then
        local Minutes = A['Minutes'];
        if is_set(Minutes) then
            Position = " " .. Minutes .. " " .. cfg.messages['minutes'];
        else
            local Time = A['Time'];
            if is_set(Time) then
                local TimeCaption = A['TimeCaption']
                if not is_set(TimeCaption) then
                    TimeCaption = cfg.messages['event'];
                    if sepc ~= '.' then
                        TimeCaption = TimeCaption:lower();
                    end
                end
                Position = " " .. TimeCaption .. " " .. Time;
            end
        end
    else
        Position = " " .. Position;
        At = '';
    end
   
    if not is_set(Page) then
        if is_set(Pages) then
            if is_set(Periodical) and
                not inArray(config.CitationClass, {"encyclopaedia","web","book","news"}) 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;       
    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,
local Publisher;
use that value; if not, then use the value that was provided with the language parameter.
if utilities.is_set (PublicationDate) then
PublicationDate = wrap_msg ('published', PublicationDate);
end
if utilities.is_set (PublisherName) then
if utilities.is_set (PublicationPlace) then
Publisher = sepc .. " " .. PublicationPlace .. ": " .. PublisherName .. PublicationDate;
else
Publisher = sepc .. " " .. PublisherName .. PublicationDate; 
end
elseif utilities.is_set (PublicationPlace) then
Publisher= sepc .. " " .. PublicationPlace .. PublicationDate;
else
Publisher = PublicationDate;
end
local TransPeriodical =  A['TransPeriodical'];
local TransPeriodical_origin =  A:ORIGIN ('TransPeriodical');
-- Several of the above rely upon detecting this as nil, so do it last.
if (utilities.is_set (Periodical) or utilities.is_set (ScriptPeriodical) or utilities.is_set (TransPeriodical)) then
if utilities.is_set (Title) or utilities.is_set (TitleNote) then  
Periodical = sepc .. " " .. format_periodical (ScriptPeriodical, ScriptPeriodical_origin, Periodical, TransPeriodical, TransPeriodical_origin);
else
Periodical = format_periodical (ScriptPeriodical, ScriptPeriodical_origin, Periodical, TransPeriodical, TransPeriodical_origin);
end
end
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).
local Language = A['Language'];
if utilities.is_set (Language) then
Language = language_parameter (Language); -- format, categories, name from ISO639-1, etc.
else
Language=''; -- language not specified so make sure this is an empty string;
--[[ TODO: need to extract the wrap_msg from language_parameter
so that we can solve parentheses bunching problem with Format/Language/TitleType
]]
]]
if is_set (Language) then
end
local name = cfg.iso639_1[Language:lower()]; -- get the language name if Language parameter has a valid iso 639-1 code
 
if nil == name then
--[[
Language=" " .. wrap( 'language', Language ); -- no match, use parameter's value
Handle the oddity that is cite speech.  This code overrides whatever may be the value assigned to TitleNote (through |department=) and forces it to be " (Speech)" so that
the annotation directly follows the |title= parameter value in the citation rather than the |event= parameter value (if provided).
]]
if "speech" == config.CitationClass then -- cite speech only
TitleNote = " (Speech)"; -- annotate the citation
if utilities.is_set (Periodical) then -- if Periodical, perhaps because of an included |website= or |journal= parameter
if utilities.is_set (Conference) then -- and if |event= is set
Conference = Conference .. sepc .. " "; -- then add appropriate punctuation to the end of the Conference variable before rendering
end
end
end
 
-- Piece all bits together at last.  Here, all should be non-nil.
-- We build things this way because it is more efficient in LUA
-- not to keep reassigning to the same string variable over and over.
 
local tcommon;
local tcommon2; -- used for book cite when |contributor= is set
if utilities.in_array (config.CitationClass, {"journal", "citation"}) and utilities.is_set (Periodical) then
if utilities.is_set (Others) then Others = safe_join ({Others, sepc .. " "}, sepc) end -- add terminal punctuation & space; check for dup sepc; TODO why do we need to do this here?
tcommon = safe_join( {Others, Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language, Edition, Publisher, Agency, Volume}, sepc );
elseif utilities.in_array (config.CitationClass, {"book", "citation"}) and not utilities.is_set (Periodical) then -- special cases for book cites
if utilities.is_set (Contributors) then -- when we are citing foreword, preface, introduction, etc.
tcommon = safe_join( {Title, TitleNote}, sepc ); -- author and other stuff will come after this and before tcommon2
tcommon2 = safe_join( {Conference, Periodical, Format, TitleType, Series, Language, Volume, Others, Edition, Publisher, Agency}, sepc );
else
tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language, Volume, Others, Edition, Publisher, Agency}, sepc );
end
 
elseif 'map' == config.CitationClass then -- special cases for cite map
if utilities.is_set (Chapter) then -- map in a book; TitleType is part of Chapter
tcommon = safe_join( {Title, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher, Volume}, sepc );
elseif utilities.is_set (Periodical) then -- map in a periodical
tcommon = safe_join( {Title, TitleType, Format, Periodical, Scale, Series, Language, Cartography, Others, Publisher, Volume}, sepc );
else -- a sheet or stand-alone map
tcommon = safe_join( {Title, TitleType, Format, Edition, Scale, Series, Language, Cartography, Others, Publisher}, sepc );
end
elseif 'episode' == config.CitationClass then -- special case for cite episode
tcommon = safe_join( {Title, TitleNote, TitleType, Series, Language, Edition, Publisher}, sepc );
 
else -- all other CS1 templates
tcommon = safe_join( {Title, TitleNote, Conference, Periodical, Format, TitleType, Series, Language,
Volume, Others, Edition, Publisher, Agency}, sepc );
end
if #ID_list > 0 then
ID_list = safe_join( { sepc .. " ",  table.concat( ID_list, sepc .. " " ), ID }, sepc );
else
ID_list = ID;
end
local Via = A['Via'];
Via = utilities.is_set (Via) and  wrap_msg ('via', Via) or '';
local idcommon;
if 'audio-visual' == config.CitationClass or 'episode' == config.CitationClass then -- special case for cite AV media & cite episode position transcript
idcommon = safe_join( { ID_list, URL, Archived, Transcript, AccessDate, Via, Lay, Quote }, sepc );
else
idcommon = safe_join( { ID_list, URL, Archived, AccessDate, Via, Lay, Quote }, sepc );
end
local text;
local pgtext = Position .. Sheet .. Sheets .. Page .. Pages .. At;
 
local OrigDate = A['OrigDate'];
OrigDate = utilities.is_set (OrigDate) and wrap_msg ('origdate', OrigDate) or '';
if utilities.is_set (Date) then
if utilities.is_set (Authors) or utilities.is_set (Editors) then -- date follows authors or editors when authors not set
Date = " (" .. Date .. ")" .. OrigDate .. sepc .. " "; -- in parentheses
else -- neither of authors and editors set
if (string.sub(tcommon, -1, -1) == sepc) then -- if the last character of tcommon is sepc
Date = " " .. Date .. OrigDate; -- Date does not begin with sepc
else
Date = sepc .. " " .. Date .. OrigDate; -- Date begins with sepc
end
end
end
if utilities.is_set (Authors) then
if (not utilities.is_set (Date)) then -- when date is set it's in parentheses; no Authors termination
Authors = terminate_name_list (Authors, sepc); -- when no date, terminate with 0 or 1 sepc and a space
end
if utilities.is_set (Editors) then
local in_text = " ";
local post_text = "";
if utilities.is_set (Chapter) and 0 == #c then
in_text = in_text .. cfg.messages['in'] .. " "
if (sepc ~= '.') then
in_text = in_text:lower() -- lowercase for cs2
end
end
if EditorCount <= 1 then
post_text = " (" .. cfg.messages['editor'] .. ")"; -- be consistent with no-author, no-date case
else
post_text = " (" .. cfg.messages['editors'] .. ")";
end
Editors = terminate_name_list (in_text .. Editors .. post_text, sepc); -- terminate with 0 or 1 sepc and a space
end
if utilities.is_set (Contributors) then -- book cite and we're citing the intro, preface, etc.
local by_text = sepc .. ' ' .. cfg.messages['by'] .. ' ';
if (sepc ~= '.') then by_text = by_text:lower() end -- lowercase for cs2
Authors = by_text .. Authors; -- author follows title so tweak it here
if utilities.is_set (Editors) and utilities.is_set (Date) then -- when Editors make sure that Authors gets terminated
Authors = terminate_name_list (Authors, sepc); -- terminate with 0 or 1 sepc and a space
end
if (not utilities.is_set (Date)) then -- when date is set it's in parentheses; no Contributors termination
Contributors = terminate_name_list (Contributors, sepc); -- terminate with 0 or 1 sepc and a space
end
text = safe_join( {Contributors, Date, Chapter, tcommon, Authors, Place, Editors, tcommon2, pgtext, idcommon }, sepc );
else
text = safe_join( {Authors, Date, Chapter, Place, Editors, tcommon, pgtext, idcommon }, sepc );
end
elseif utilities.is_set (Editors) then
if utilities.is_set (Date) then
if EditorCount <= 1 then
Editors = Editors .. ", " .. cfg.messages['editor'];
else
Editors = Editors .. ", " .. cfg.messages['editors'];
end
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 EditorCount <= 1 then
Language=" " .. wrap( 'language', name .. '[[Category:Articles with ' .. name .. '-language external links]]' ); -- in main space and not English: categorize
Editors = Editors .. " (" .. cfg.messages['editor'] .. ")" .. sepc .. " "
else
else
Language=" " .. wrap( 'language', name ); --not in mainspace or language is English so don't categorize
Editors = Editors .. " (" .. cfg.messages['editors'] .. ")" .. sepc .. " "
end
end
end
end
text = safe_join( {Editors, Date, Chapter, Place, tcommon, pgtext, idcommon}, sepc );
else
else
Language=""; -- language not specified so make sure this is an empty string;
if utilities.in_array (config.CitationClass, {"journal", "citation"}) and utilities.is_set (Periodical) then
text = safe_join( {Chapter, Place, tcommon, pgtext, Date, idcommon}, sepc );
else
text = safe_join( {Chapter, Place, tcommon, Date, pgtext, idcommon}, sepc );
end
end
end
if utilities.is_set (PostScript) and PostScript ~= sepc then
text = safe_join( {text, sepc}, sepc ); -- Deals with italics, spaces, etc.
text = text:sub(1, -sepc:len() - 1);
end
text = safe_join( {text, PostScript}, sepc );


    Others = is_set(Others) and (sepc .. " " .. Others) or "";
-- Now enclose the whole thing in a <cite> element
    TitleType = is_set(TitleType) and (" (" .. TitleType .. ")") or "";
local options = {};
    TitleNote = is_set(TitleNote) and (sepc .. " " .. TitleNote) or "";
    Edition = is_set(Edition) and (" " .. wrap( 'edition', Edition )) or "";
if utilities.is_set (config.CitationClass) and config.CitationClass ~= "citation" then
    Issue = is_set(Issue) and (" (" .. Issue .. ")") or "";
options.class = string.format ('%s %s %s', 'citation', config.CitationClass, utilities.is_set (Mode) and Mode or 'cs1'); -- class=citation required for blue highlight when used with |ref=
    Series = is_set(Series) and (sepc .. " " .. Series) or "";
else
    OrigYear = is_set(OrigYear) and (" [" .. OrigYear .. "]") or "";
options.class = string.format ('%s %s', 'citation', utilities.is_set (Mode) and Mode or 'cs2');
    Agency = is_set(Agency) and (sepc .. " " .. Agency) or "";
end
   
    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
local Ref = A['Ref'];
        SubscriptionRequired = sepc .. " " .. cfg.messages['subscription']; --here when 'via' parameter not used but 'subscription' is
if 'harv' == Ref then -- need to check this before setting to default
    elseif is_set(RegistrationRequired) then
utilities.set_message ('maint_ref_harv'); -- add maint cat to identify templates that have this now-extraneous param value
        SubscriptionRequired = sepc .. " " .. cfg.messages['registration']; --here when 'via' and 'subscription' parameters not used but 'registration' is
elseif not utilities.is_set (Ref) then
    end
Ref = 'harv'; -- set as default when not set externally
end
if 'none' ~= cfg.keywords_xlate[Ref:lower()] then
local id = Ref
local namelist = {}; -- holds selected contributor, author, editor name list
local year = first_set ({Year, anchor_year}, 2); -- Year first for legacy citations and for YMD dates that require disambiguation


    if is_set(AccessDate) then
if #c > 0 then -- if there is a contributor list
        local retrv_text = " " .. cfg.messages['retrieved']
namelist = c; -- select it
        if (sepc ~= ".") then retrv_text = retrv_text:lower() end
elseif #a > 0 then -- or an author list
        AccessDate = '<span class="reference-accessdate">' .. sepc
namelist = a;
            .. substitute( retrv_text, {AccessDate} ) .. '</span>'
elseif #e > 0 then -- or an editor list
    end
namelist = e;
   
end
    if is_set(ID) then ID = sepc .." ".. ID; end
local citeref_id
   
if #namelist > 0 then -- if there are names in namelist
    ID_list = buildidlist( ID_list, {DoiBroken = DoiBroken, ASINTLD = ASINTLD, IgnoreISBN = IgnoreISBN, Embargo=Embargo} );
citeref_id = make_citeref_id (namelist, year); -- go make the CITEREF anchor
else
citeref_id = ''; -- unset
end
if citeref_id == Ref then
utilities.set_message ('maint_ref_duplicates_default');
end
if 'harv' == Ref then
id = citeref_id
end
options.id = id;
end
if string.len(text:gsub("<span[^>/]*>(.-)</span>", "%1"):gsub("%b<>", "")) <= 2 then -- remove <span> tags and other HTML-like markup; then get length of what remains
z.error_categories = {};
text = utilities.set_message ('err_empty_citation');
z.message_tail = {};
end
local render = {}; -- here we collect the final bits for concatenation into the rendered citation


    if is_set(URL) then
if utilities.is_set (options.id) then -- here we wrap the rendered citation in <cite ...>...</cite> tags
        URL = " " .. externallink( URL, nil, URLorigin );
table.insert (render, utilities.substitute (cfg.presentation['cite-id'], {mw.uri.anchorEncode(options.id), mw.text.nowiki(options.class), text})); -- when |ref= is set
    end
else
table.insert (render, utilities.substitute (cfg.presentation['cite'], {mw.text.nowiki(options.class), text})); -- all other cases
end


    if is_set(Quote) then
table.insert (render, utilities.substitute (cfg.presentation['ocins'], {OCinSoutput})); -- append metadata to the citation
        if Quote:sub(1,1) == '"' and Quote:sub(-1,-1) == '"' then
            Quote = Quote:sub(2,-2);
        end
        Quote = sepc .." " .. wrap( 'quoted-text', Quote );
        PostScript = "";
    elseif PostScript:lower() == "none" then
        PostScript = "";
    end
   
    local Archived
    if is_set(ArchiveURL) then
        if not is_set(ArchiveDate) then
            ArchiveDate = seterror('archive_missing_date');
        end
        if "no" == DeadURL then
            local arch_text = cfg.messages['archived'];
            if sepc ~= "." then arch_text = arch_text:lower() end
            Archived = sepc .. " " .. substitute( cfg.messages['archived-not-dead'],
                { externallink( ArchiveURL, arch_text ), ArchiveDate } );
            if not is_set(OriginalURL) then
                Archived = Archived .. " " .. seterror('archive_missing_url');                             
            end
        elseif is_set(OriginalURL) then
            local arch_text = cfg.messages['archived-dead'];
            if sepc ~= "." then arch_text = arch_text:lower() end
            Archived = sepc .. " " .. substitute( arch_text,
                { externallink( OriginalURL, cfg.messages['original'] ), ArchiveDate } );
        else
            local arch_text = cfg.messages['archived-missing'];
            if sepc ~= "." then arch_text = arch_text:lower() end
            Archived = sepc .. " " .. substitute( arch_text,
                { seterror('archive_missing_url'), ArchiveDate } );
        end
    else
        Archived = ""
    end
   
    local Lay
    if is_set(LayURL) then
        if is_set(LayDate) then LayDate = " (" .. LayDate .. ")" end
        if is_set(LaySource) then
            LaySource = " &ndash; ''" .. safeforitalics(LaySource) .. "''";
        else
            LaySource = "";
        end
        if sepc == '.' then
            Lay = sepc .. " " .. externallink( LayURL, cfg.messages['lay summary'] ) .. LaySource .. LayDate
        else
            Lay = sepc .. " " .. externallink( LayURL, cfg.messages['lay summary']:lower() ) .. LaySource .. LayDate
        end           
    else
        Lay = "";
    end
   
    if is_set(Transcript) then
        if is_set(TranscriptURL) then Transcript = externallink( TranscriptURL, Transcript ); end
    elseif is_set(TranscriptURL) then
        Transcript = externallink( TranscriptURL, nil, TranscriptURLorigin );
    end
   
    local Publisher;
    if is_set(Periodical) and
        not inArray(config.CitationClass, {"encyclopaedia","web","pressrelease"}) then
        if is_set(PublisherName) then
            if is_set(PublicationPlace) then
                Publisher = PublicationPlace .. ": " .. PublisherName;
            else
                Publisher = PublisherName; 
            end
        elseif is_set(PublicationPlace) then
            Publisher= PublicationPlace;
        else
            Publisher = "";
        end
        if is_set(PublicationDate) then
            if is_set(Publisher) then
                Publisher = Publisher .. ", " .. wrap( 'published', PublicationDate );
            else
                Publisher = PublicationDate;
            end
        end
        if is_set(Publisher) then
            Publisher = " (" .. Publisher .. ")";
        end
    else
        if is_set(PublicationDate) then
            PublicationDate = " (" .. wrap( 'published', PublicationDate ) .. ")";
        end
        if is_set(PublisherName) then
            if is_set(PublicationPlace) then
                Publisher = sepc .. " " .. PublicationPlace .. ": " .. PublisherName .. PublicationDate;
            else
                Publisher = sepc .. " " .. PublisherName .. PublicationDate; 
            end           
        elseif is_set(PublicationPlace) then
            Publisher= sepc .. " " .. PublicationPlace .. PublicationDate;
        else
            Publisher = PublicationDate;
        end
    end
   
    -- Several of the above rely upon detecting this as nil, so do it last.
    if is_set(Periodical) then
        if is_set(Title) or is_set(TitleNote) then
            Periodical = sepc .. " " .. wrap( 'italic-title', Periodical )
        else
            Periodical = wrap( 'italic-title', Periodical )
        end
    end


    -- Piece all bits together at last. Here, all should be non-nil.
if 0 ~= #z.message_tail then
    -- We build things this way because it is more efficient in LUA
table.insert (render, ' ');
    -- not to keep reassigning to the same string variable over and over.
for i,v in ipairs( z.message_tail ) do
if utilities.is_set (v[1]) then
if i == #z.message_tail then
table.insert (render, utilities.error_comment ( v[1], v[2] ));
else
table.insert (render, utilities.error_comment ( v[1] .. "; ", v[2] ));
end
end
end
end


    local tcommon
if 0 ~= #z.maintenance_cats then
    if inArray(config.CitationClass, {"journal","citation"}) and is_set(Periodical) then
local maint_msgs = {}; -- here we collect all of the maint messages
        if is_set(Others) then Others = Others .. sepc .. " " end
for _, v in ipairs( z.maintenance_cats ) do -- append maintenance categories
        tcommon = safejoin( {Others, Title, TitleNote, Conference, Periodical, Format, TitleType, Scale, Series,
local maint = {}; -- here we assemble a maintenence message
            Language, Cartography, Edition, Publisher, Agency, Volume, Issue}, sepc );
table.insert (maint, v); -- maint msg is the category name
    else
table.insert (maint, ' ('); -- open the link text
        tcommon = safejoin( {Title, TitleNote, Conference, Periodical, Format, TitleType, Scale, Series, Language,
table.insert (maint, utilities.substitute (cfg.messages[':cat wikilink'], {v})); -- add the link
            Volume, Issue, Others, Cartography, Edition, Publisher, Agency}, sepc );
table.insert (maint, ')'); -- and close it
    end
table.insert (maint_msgs, table.concat (maint)); -- assemble new maint message and add it to the maint_msgs table
   
end
    if #ID_list > 0 then
table.insert (render, utilities.substitute (cfg.presentation['hidden-maint'], table.concat (maint_msgs, ' '))); -- wrap the group of maint message with proper presentation and save
        ID_list = safejoin( { sepc .. " ",  table.concat( ID_list, sepc .. " " ), ID }, sepc );
end
    else
        ID_list = ID;
if not no_tracking_cats then
    end
for _, v in ipairs( z.error_categories ) do -- append error categories
   
table.insert (render, utilities.substitute (cfg.messages['cat wikilink'], {v}));
    local idcommon = safejoin( { ID_list, URL, Archived, AccessDate, Via, SubscriptionRequired, Lay, Quote }, sepc );
end
    local text;
for _, v in ipairs( z.maintenance_cats ) do -- append maintenance categories
    local pgtext = Position .. Page .. Pages .. At;
table.insert (render, utilities.substitute (cfg.messages['cat wikilink'], {v}));
   
end
    if is_set(Authors) then
for _, v in ipairs( z.properties_cats ) do -- append properties categories
        if is_set(Coauthors) then
table.insert (render, utilities.substitute (cfg.messages['cat wikilink'], {v}));
            Authors = Authors .. A['AuthorSeparator'] .. " " .. Coauthors
end
        end
end
        if is_set(Date) then
 
            Date = " ("..Date..")" .. OrigYear .. sepc .. " "
return table.concat (render);
        elseif string.sub(Authors,-1,-1) == sepc then
end
            Authors = Authors .. " "
 
        else
 
            Authors = Authors .. sepc .. " "
--[[--------------------------< V A L I D A T E >--------------------------------------------------------------
        end
 
        if is_set(Editors) then
Looks for a parameter's name in one of several whitelists.
            local in_text = " ";
 
            local post_text = "";
Parameters in the whitelist can have three values:
            if is_set(Chapter) then
true - active, supported parameters
                in_text = in_text .. cfg.messages['in'] .. " "
false - deprecated, supported parameters
            else
nil - unsupported parameters
                if EditorCount <= 1 then
                    post_text = ", " .. cfg.messages['editor'];
]]
                else
 
                    post_text = ", " .. cfg.messages['editors'];
local function validate (name, cite_class, empty)
                end
local name = tostring (name);
            end
local enum_name; -- for enumerated parameters, is name with enumerator replaced with '#'
            if (sepc ~= '.') then in_text = in_text:lower() end
local state;
            Editors = in_text .. Editors .. post_text;
local function state_test (state, name) -- local function to do testing of state values
            if (string.sub(Editors,-1,-1) == sepc)
if true == state then return true; end -- valid actively supported parameter
                then Editors = Editors .. " "
if false == state then
                else Editors = Editors .. sepc .. " "
if empty then return nil; end -- empty deprecated parameters are treated as unknowns
            end
deprecated_parameter (name); -- parameter is deprecated but still supported
        end
return true;
        text = safejoin( {Authors, Date, Chapter, Place, Editors, tcommon }, sepc );
end
        text = safejoin( {text, pgtext, idcommon}, sepc );
if 'discouraged' == state then
    elseif is_set(Editors) then
discouraged_parameter (name); -- parameter is discouraged but still supported
        if is_set(Date) then
return true;
            if EditorCount <= 1 then
end
                Editors = Editors .. ", " .. cfg.messages['editor'];
return nil;
            else
end
                Editors = Editors .. ", " .. cfg.messages['editors'];
            end
            Date = " (" .. Date ..")" .. OrigYear .. sepc .. " "
        else
            if EditorCount <= 1 then
                Editors = Editors .. " (" .. cfg.messages['editor'] .. ")" .. sepc .. " "
            else
                Editors = Editors .. " (" .. cfg.messages['editors'] .. ")" .. sepc .. " "
            end
        end
        text = safejoin( {Editors, Date, Chapter, Place, tcommon}, sepc );
        text = safejoin( {text, pgtext, idcommon}, sepc );
    else
        if is_set(Date) then
            if ( string.sub(tcommon,-1,-1) ~= sepc )
              then Date = sepc .." " .. Date .. OrigYear
              else Date = " " .. Date .. OrigYear
            end
        end
        if config.CitationClass=="journal" and is_set(Periodical) then
            text = safejoin( {Chapter, Place, tcommon}, sepc );
            text = safejoin( {text, pgtext, Date, idcommon}, sepc );
        else
            text = safejoin( {Chapter, Place, tcommon, Date}, sepc );
            text = safejoin( {text, pgtext, idcommon}, sepc );
        end
    end
   
    if is_set(PostScript) and PostScript ~= sepc then
        text = safejoin( {text, sepc}, sepc ); --Deals with italics, spaces, etc.
        text = text:sub(1,-2); --Remove final seperator   
    end  
   
    text = safejoin( {text, PostScript}, sepc );


    -- Now enclose the whole thing in a <span/> element
if name:find ('#') then -- # is a cs1|2 reserved character so parameters with # not permitted
    if not is_set(Year) then
return nil;
        if is_set(DateIn) then
end
            Year = selectyear( DateIn );
        elseif is_set(PublicationDate) then
            Year = selectyear( PublicationDate );
        end
    end
   
    local options = {};
   
    if is_set(config.CitationClass) and config.CitationClass ~= "citation" then
        options.class = "citation " .. config.CitationClass;
    else
        options.class = "citation";
    end
   
    if is_set(Ref) and Ref:lower() ~= "none" then
        local id = Ref
        if ( "harv" == Ref ) then
            local names = {} --table of last names & year
            if #a > 0 then
                for i,v in ipairs(a) do
                    names[i] = v.last
                    if i == 4 then break end
                end
            elseif #e > 0 then
                for i,v in ipairs(e) do
                    names[i] = v.last
                    if i == 4 then break end               
                end
            end
            names[ #names + 1 ] = Year;
            id = anchorid(names)
        end
        options.id = id;
    end
   
    if string.len(text:gsub("<span[^>/]*>.-</span>", ""):gsub("%b<>","")) <= 2 then
        z.error_categories = {};
        text = seterror('empty_citation');
        z.message_tail = {};
    end
   
    if is_set(options.id) then
        text = '<span id="' .. mw.uri.anchorEncode(options.id) ..'" class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</span>";
    else
        text = '<span class="' .. mw.text.nowiki(options.class) .. '">' .. text .. "</span>";
    end      


    local empty_span = '<span style="display:none;">&nbsp;</span>';
if utilities.in_array (cite_class, whitelist.preprint_template_list ) then -- limited parameter sets allowed for these templates
   
state = whitelist.limited_basic_arguments[name];
    -- Note: Using display: none on then COinS span breaks some clients.
if true == state_test (state, name) then return true; end
    local OCinS = '<span title="' .. OCinSoutput .. '" class="Z3988">' .. empty_span .. '</span>';
 
    text = text .. OCinS;
state = whitelist.preprint_arguments[cite_class][name]; -- look in the parameter-list for the template identified by cite_class
   
if true == state_test (state, name) then return true; end
    if #z.message_tail ~= 0 then
 
        text = text .. " ";
-- limited enumerated parameters list
        for i,v in ipairs( z.message_tail ) do
enum_name = name:gsub("%d+", "#" ); -- replace digit(s) with # (last25 becomes last#) (mw.ustring because non-Western 'local' digits)
            if is_set(v[1]) then
state = whitelist.limited_numbered_arguments[enum_name];
                if i == #z.message_tail then
if true == state_test (state, name) then return true; end
                    text = text .. errorcomment( v[1], v[2] );
 
                else
return false; -- not supported because not found or name is set to nil
                    text = text .. errorcomment( v[1] .. "; ", v[2] );
end -- end limited parameter-set templates
                end
 
            end
if utilities.in_array (cite_class, whitelist.unique_param_template_list) then -- experiment for template-specific parameters for templates that accept parameters from the basic argument list
        end
state = whitelist.unique_arguments[cite_class][name]; -- look in the template-specific parameter-lists for the template identified by cite_class
    end
if true == state_test (state, name) then return true; end
   
end -- if here, fall into general validation
    no_tracking_cats = no_tracking_cats:lower();
    if inArray(no_tracking_cats, {"", "no", "false", "n"}) then
state = whitelist.basic_arguments[name]; -- all other templates; all normal parameters allowed
        for _, v in ipairs( z.error_categories ) do
if true == state_test (state, name) then return true; end
            text = text .. '[[Category:' .. v ..']]';
 
        end
-- all enumerated parameters allowed
    end
enum_name = name:gsub("%d+", "#" ); -- replace digit(s) with # (last25 becomes last#) (mw.ustring because non-Western 'local' digits)
   
state = whitelist.numbered_arguments[enum_name];
    return text
if true == state_test (state, name) then return true; end
 
return false; -- not supported because not found or name is set to nil
end
end


-- This is used by templates such as {{cite book}} to create the actual citation text.
function z.citation(frame)
    local pframe = frame:getParent()
   
    local args = {};
    local suggestions = {};
    local error_text, error_state;


    local config = {};
--[=[-------------------------< I N T E R _ W I K I _ C H E C K >----------------------------------------------
    for k, v in pairs( frame.args ) do
 
        config[k] = v;
check <value> for inter-language interwiki-link markup.  <prefix> must be a MediaWiki-recognized language
        args[k] = v;     
code.  when these values have the form (without leading colon):
    end   
[[<prefix>:link|label]] return label as plain-text
[[<prefix>:link]] return <prefix>:link as plain-text
 
return value as is else
 
]=]


    for k, v in pairs( pframe.args ) do
local function inter_wiki_check (parameter, value)
        if v ~= '' then
local prefix = value:match ('%[%[(%a+):'); -- get an interwiki prefix if one exists
            if not validate( k ) then           
local _;
                error_text = "";
                if type( k ) ~= 'string' then
if prefix and cfg.inter_wiki_map[prefix:lower()] then -- if prefix is in the map, needs preceding colon so
                    -- Exclude empty numbered parameters
table.insert( z.message_tail, {utilities.set_message ('err_bad_paramlink', parameter)}); -- emit an error message
                    if v:match("%S+") ~= nil then
_, value, _ = utilities.is_wikilink (value); -- extract label portion from wikilink
                        error_text, error_state = seterror( 'text_ignored', {v}, true );
end
                    end
return value;
                elseif validate( k:lower() ) then
                    error_text, error_state = seterror( 'parameter_ignored_suggest', {k, k:lower()}, true );
                else
                    if #suggestions == 0 then
                        suggestions = mw.loadData( 'Module:Citation/CS1/Suggestions' );
                    end
                    if suggestions[ k:lower() ] ~= nil then
                        error_text, error_state = seterror( 'parameter_ignored_suggest', {k, suggestions[ k:lower() ]}, true );
                    else
                        error_text, error_state = seterror( 'parameter_ignored', {k}, true );
                    end
                end                 
                if error_text ~= '' then
                    table.insert( z.message_tail, {error_text, error_state} );
                end               
            end
            args[k] = v;
        elseif args[k] ~= nil or (k == 'postscript') then
            args[k] = v;
        end       
    end  
   
    return citation0( config, args)
end
end


return z
 
--[[--------------------------< M I S S I N G _ P I P E _ C H E C K >------------------------------------------
 
Look at the contents of a parameter. If the content has a string of characters and digits followed by an equal
sign, compare the alphanumeric string to the list of cs1|2 parameters.  If found, then the string is possibly a
parameter that is missing its pipe.  There are two tests made:
{{cite ... |title=Title access-date=2016-03-17}} -- the first parameter has a value and whitespace separates that value from the missing pipe parameter name
{{cite ... |title=access-date=2016-03-17}} -- the first parameter has no value (whitespace after the first = is trimmed by MediaWiki)
cs1|2 shares some parameter names with XML/HTML attributes: class=, title=, etc.  To prevent false positives XML/HTML
tags are removed before the search.
 
If a missing pipe is detected, this function adds the missing pipe maintenance category.
 
]]
 
local function missing_pipe_check (parameter, value)
local capture;
value = value:gsub ('%b<>', ''); -- remove XML/HTML tags because attributes: class=, title=, etc.
 
capture = value:match ('%s+(%a[%w%-]+)%s*=') or value:match ('^(%a[%w%-]+)%s*='); -- find and categorize parameters with possible missing pipes
if capture and validate (capture) then -- if the capture is a valid parameter name
table.insert( z.message_tail, {utilities.set_message ('err_missing_pipe', parameter)});
end
end
 
 
--[[--------------------------< H A S _ E X T R A N E O U S _ P U N C T >--------------------------------------
 
look for extraneous terminal punctuation in most parameter values; parameters listed in skip table are not checked
 
]]
 
local function has_extraneous_punc (param, value)
if 'number' == type (param) then
return;
end
param = param:gsub ('%d+', '#'); -- enumerated name-list mask params allow terminal punct; normalize
if cfg.punct_skip[param] then
return; -- parameter name found in the skip table so done
end
if value:match ('[,;:]$') then
utilities.set_message ('maint_extra_punct'); -- has extraneous punctuation; add maint cat
end
end
 
 
--[[--------------------------< C I T A T I O N >--------------------------------------------------------------
 
This is used by templates such as {{cite book}} to create the actual citation text.
 
]]
 
local function citation(frame)
Frame = frame; -- save a copy in case we need to display an error message in preview mode
local pframe = frame:getParent()
local styles;
if nil ~= string.find (frame:getTitle(), 'sandbox', 1, true) then -- did the {{#invoke:}} use sandbox version?
cfg = mw.loadData ('Module:Citation/CS1/Configuration/sandbox'); -- load sandbox versions of support modules
whitelist = mw.loadData ('Module:Citation/CS1/Whitelist/sandbox');
utilities = require ('Module:Citation/CS1/Utilities/sandbox');
validation = require ('Module:Citation/CS1/Date_validation/sandbox');
identifiers = require ('Module:Citation/CS1/Identifiers/sandbox');
metadata = require ('Module:Citation/CS1/COinS/sandbox');
styles = 'Module:Citation/CS1/sandbox/styles.css';
else -- otherwise
cfg = mw.loadData ('Module:Citation/CS1/Configuration'); -- load live versions of support modules
whitelist = mw.loadData ('Module:Citation/CS1/Whitelist');
utilities = require ('Module:Citation/CS1/Utilities');
validation = require ('Module:Citation/CS1/Date_validation');
identifiers = require ('Module:Citation/CS1/Identifiers');
metadata = require ('Module:Citation/CS1/COinS');
styles = 'Module:Citation/CS1/styles.css';
end
 
utilities.set_selected_modules (cfg); -- so that functions in Utilities can see the selected cfg tables
identifiers.set_selected_modules (cfg, utilities); -- so that functions in Identifiers can see the selected cfg tables and selected Utilities module
validation.set_selected_modules (cfg, utilities); -- so that functions in Date validataion can see selected cfg tables and the selected Utilities module
metadata.set_selected_modules (cfg, utilities); -- so that functions in COinS can see the selected cfg tables and selected Utilities module
 
z = utilities.z; -- table of error and category tables in Module:Citation/CS1/Utilities
 
local args = {}; -- table where we store all of the template's arguments
local suggestions = {}; -- table where we store suggestions if we need to loadData them
local error_text, error_state;
 
local config = {}; -- table to store parameters from the module {{#invoke:}}
for k, v in pairs( frame.args ) do -- get parameters from the {{#invoke}} frame
config[k] = v;
-- args[k] = v; -- crude debug support that allows us to render a citation from module {{#invoke:}}; skips parameter validation; TODO: keep?
end
 
local capture; -- the single supported capture when matching unknown parameters using patterns
local empty_unknowns = {}; -- sequence table to hold empty unknown params for error message listing
for k, v in pairs( pframe.args ) do -- get parameters from the parent (template) frame
v = mw.ustring.gsub (v, '^%s*(.-)%s*$', '%1'); -- trim leading/trailing whitespace; when v is only whitespace, becomes empty string
if v ~= '' then
if ('string' == type (k)) then
k = mw.ustring.gsub (k, '%d', cfg.date_names.local_digits); -- for enumerated parameters, translate 'local' digits to Western 0-9
end
if not validate( k, config.CitationClass ) then
error_text = "";
if type( k ) ~= 'string' then
-- exclude empty numbered parameters
if v:match("%S+") ~= nil then
error_text, error_state = utilities.set_message ( 'err_text_ignored', {v}, true );
end
elseif validate( k:lower(), config.CitationClass ) then
error_text, error_state = utilities.set_message ( 'err_parameter_ignored_suggest', {k, k:lower()}, true ); -- suggest the lowercase version of the parameter
else
if nil == suggestions.suggestions then -- if this table is nil then we need to load it
if nil ~= string.find (frame:getTitle(), 'sandbox', 1, true) then -- did the {{#invoke:}} use sandbox version?
suggestions = mw.loadData( 'Module:Citation/CS1/Suggestions/sandbox' ); -- use the sandbox version
else
suggestions = mw.loadData( 'Module:Citation/CS1/Suggestions' ); -- use the live version
end
end
for pattern, param in pairs (suggestions.patterns) do -- loop through the patterns to see if we can suggest a proper parameter
capture = k:match (pattern); -- the whole match if no capture in pattern else the capture if a match
if capture then -- if the pattern matches
param = utilities.substitute (param, capture); -- add the capture to the suggested parameter (typically the enumerator)
if validate (param, config.CitationClass) then -- validate the suggestion to make sure that the suggestion is supported by this template (necessary for limited parameter lists)
error_text, error_state = utilities.set_message ('err_parameter_ignored_suggest', {k, param}, true); -- set the suggestion error message
else
error_text, error_state = utilities.set_message ( 'err_parameter_ignored', {k}, true ); -- suggested param not supported by this template
v = ''; -- unset
end
end
end
if not utilities.is_set (error_text) then -- couldn't match with a pattern, is there an explicit suggestion?
if (suggestions.suggestions[ k:lower() ] ~= nil) and validate (suggestions.suggestions[ k:lower() ], config.CitationClass) then
error_text, error_state = utilities.set_message ( 'err_parameter_ignored_suggest', {k, suggestions.suggestions[ k:lower() ]}, true );
else
error_text, error_state = utilities.set_message ( 'err_parameter_ignored', {k}, true );
v = ''; -- unset value assigned to unrecognized parameters (this for the limited parameter lists)
end
end
end  
if error_text ~= '' then
table.insert( z.message_tail, {error_text, error_state} );
end
end
 
args[k] = v; -- save this parameter and its value
 
elseif not utilities.is_set (v) then -- for empty parameters
if not validate (k, config.CitationClass, true) then -- is this empty parameter a valid parameter
k = ('' == k) and '(empty string)' or k; -- when k is empty string (or was space(s) trimmed to empty string), replace with descriptive text
table.insert (empty_unknowns, utilities.wrap_style ('parameter', k)); -- format for error message and add to the list
end
-- crude debug support that allows us to render a citation from module {{#invoke:}} TODO: keep?
-- elseif args[k] ~= nil or (k == 'postscript') then -- when args[k] has a value from {{#invoke}} frame (we don't normally do that)
-- args[k] = v; -- overwrite args[k] with empty string from pframe.args[k] (template frame); v is empty string here
end -- not sure about the postscript bit; that gets handled in parameter validation; historical artifact?
end
 
if 0 ~= #empty_unknowns then -- create empty unknown error message
table.insert (z.message_tail, {utilities.set_message ('err_param_unknown_empty', {
1 == #empty_unknowns and '' or 's',
utilities.make_sep_list (#empty_unknowns, empty_unknowns)
}, true )});
end
 
for k, v in pairs( args ) do
if 'string' == type (k) then -- don't evaluate positional parameters
has_invisible_chars (k, v); -- look for invisible characters
end
has_extraneous_punc (k, v); -- look for extraneous terminal punctuation in parameter values
missing_pipe_check (k, v); -- do we think that there is a parameter that is missing a pipe?
args[k] = inter_wiki_check (k, v); -- when language interwiki-linked parameter missing leading colon replace with wiki-link label
end
 
return table.concat ({
frame:extensionTag ('templatestyles', '', {src=styles}),
citation0( config, args)
});
end
 
--[[--------------------------< E X P O R T E D  F U N C T I O N S >------------------------------------------
]]
 
return {citation = citation};
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