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Module:Citation/CS1/Identifiers: Difference between revisions

Module Discussion

Module:Citation/CS1/Identifiers (edit)

Revision as of 13:18, 11 July 2020

13,221 bytes added ,  4 years ago
sync from sandbox;
(trying to fix error with {{cite}} templates)
(sync from sandbox;)
Line 1: Line 1:
local identifiers = {};


--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
--[[--------------------------< F O R W A R D  D E C L A R A T I O N S >--------------------------------------
Line 12: Line 9:
local cfg; -- table of configuration tables that are defined in Module:Citation/CS1/Configuration
local cfg; -- table of configuration tables that are defined in Module:Citation/CS1/Configuration


local wd_int_lang = (mw.site.server:match ('wikidata') and mw.getCurrentFrame():preprocess('{{int:lang}}')) or '';


--============================<< H E L P E R  F U N C T I O N S >>============================================
--[[--------------------------< W I K I D A T A _ A R T I C L E _ N A M E _ G E T >----------------------------
as an aid to internationalizing identifier-label wikilinks, gets identifier article names from wikidata.
returns :<lang code>:<article title> when <q> has an <article title> for <lang code>; nil else
for identifiers that do not have q, returns nil
for wikis that do not have mw.wikibase installed, returns nil
]]
local function wikidata_article_name_get (q)
if not is_set (q) or (q and not mw.wikibase) then -- when no q number or when a q number but mw.wikibase not installed on this wiki
return nil; -- abandon
end
local wd_article;
local this_wiki_code = cfg.this_wiki_code; -- wikipedia subdomain; 'en' for en.wikipedia.org
wd_article = mw.wikibase.getSitelink (q, this_wiki_code .. 'wiki'); -- fetch article title from wd; nil when no title available at this wiki
if wd_article then
wd_article = table.concat ({':', this_wiki_code, ':', wd_article}); -- interwiki-style link without brackets if taken from wd; leading colon required
end
return wd_article; -- article title from wd; nil else
end


--============================<< H E L P E R  F U N C T I O N S >>============================================


--[[--------------------------< E X T E R N A L _ L I N K _ I D >----------------------------------------------
--[[--------------------------< E X T E R N A L _ L I N K _ I D >----------------------------------------------
Line 26: Line 51:
local url_string = options.id;
local url_string = options.id;
local ext_link;
local ext_link;
local this_wiki_code; -- wikipedia subdomain; 'en' for en.wikipedia.org
local this_wiki_code = cfg.this_wiki_code; -- wikipedia subdomain; 'en' for en.wikipedia.org
local wd_article; -- article title from wikidata
if options.encode == true or options.encode == nil then
if options.encode == true or options.encode == nil then
Line 37: Line 63:
end
end


this_wiki_code = mw.language.getContentLanguage():getCode(); -- get this wikipedia's language code (subdomain)
if not (cfg.use_identifier_redirects and is_set (options.redirect)) then -- redirect has priority so if enabled and available don't fetch from wikidata because expensive
wd_article = wikidata_article_name_get (options.q); -- if wikidata has an article title for this wiki, get it;
end
if string.match (mw.site.server, 'wikidata') then
local label_link = (cfg.use_identifier_redirects and is_set (options.redirect) and options.redirect) or wd_article or options.link;
this_wiki_code = mw.getCurrentFrame():preprocess('{{int:lang}}'); -- on wikidata so use interface language setting instead
end


return table.concat ({
return table.concat ({
make_wikilink (options.link, options.label), -- wikidata link or locally specified
make_wikilink (label_link, options.label), -- redirect, wikidata link, or locally specified link (in that order)
options.separator or '&nbsp;',
options.separator or '&nbsp;',
ext_link
ext_link
Line 58: Line 84:


local function internal_link_id(options)
local function internal_link_id(options)
local id = mw.ustring.gsub (options.id, '%d', cfg.date_names.local_digits); -- translate 'local' digits to Western 0-9
if not (cfg.use_identifier_redirects and is_set (options.redirect)) then -- redirect has priority so if enabled and available don't fetch from wikidata because expensive
wd_article = wikidata_article_name_get (options.q); -- if wikidata has an article title for this wiki, get it;
end
local label_link = (cfg.use_identifier_redirects and is_set (options.redirect) and options.redirect) or wd_article or options.link;


return table.concat (
return table.concat (
{
{
make_wikilink (options.link, options.label),
make_wikilink (label_link, options.label), -- wiki link the identifier label
options.separator or '&nbsp;',
options.separator or '&nbsp;', -- add the separator
make_wikilink (
make_wikilink (
table.concat (
table.concat (
{
{
options.prefix,
options.prefix,
options.id,
id, -- translated to western digits
options.suffix or ''
options.suffix or ''
}),
}),
mw.text.nowiki (options.id)
substitute (cfg.presentation['bdi'], {'', mw.text.nowiki (options.id)}) -- bdi tags to prevent Latn script identifiers from being reversed at rtl language wikis
);
); -- nowiki because MediaWiki still has magic links for ISBN and the like; TODO: is it really required?
});
});
end
end
Line 101: Line 134:
end
end
return ''; -- |embargo= not set return empty string
return ''; -- |embargo= not set return empty string
end
--[=[-------------------------< I S _ V A L I D _ B I O R X I V _ D A T E >------------------------------------
returns true if:
2019-12-11T00:00Z <= biorxiv_date < today + 2 days
The dated form of biorxiv identifier has a start date of 2019-12-11.  The unix timestamp for that date is {{#time:U|2019-12-11}} = 1576022400
biorxiv_date is the date provided in those |biorxiv= parameter values that are dated at time 00:00:00 UTC
today is the current date at time 00:00:00 UTC plus 48 hours
if today is 2015-01-01T00:00:00 then
adding 24 hours gives 2015-01-02T00:00:00 – one second more than today
adding 24 hours gives 2015-01-03T00:00:00 – one second more than tomorrow
This function does not work if it is fed month names for languages other than English.  Wikimedia #time: parser
apparently doesn't understand non-Engish date month names. This function will always return false when the date
contains a non-English month name because good1 is false after the call to lang.formatDate().  To get around that
call this function with YYYY-MM-DD format dates.
]=]
local function is_valid_biorxiv_date (biorxiv_date)
local good1, good2;
local biorxiv_ts, tomorrow_ts; -- to hold unix time stamps representing the dates
local lang_object = mw.getContentLanguage();
good1, biorxiv_ts = pcall (lang_object.formatDate, lang_object, 'U', biorxiv_date ); -- convert biorxiv_date value to unix timesatmp
good2, tomorrow_ts = pcall (lang_object.formatDate, lang_object, 'U', 'today + 2 days' ); -- today midnight + 2 days is one second more than all day tomorrow
if good1 and good2 then -- lang.formatDate() returns a timestamp in the local script which which tonumber() may not understand
biorxiv_ts = tonumber (biorxiv_ts) or lang_object:parseFormattedNumber (biorxiv_ts); -- convert to numbers for the comparison;
tomorrow_ts = tonumber (tomorrow_ts) or lang_object:parseFormattedNumber (tomorrow_ts);
else
return false; -- one or both failed to convert to unix time stamp
end
return ((1576022400 <= biorxiv_ts) and (biorxiv_ts < tomorrow_ts)) -- 2012-12-11T00:00Z <= biorxiv_date < tomorrow's date
end
end


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local function is_valid_isxn (isxn_str, len)
local function is_valid_isxn (isxn_str, len)
local temp = 0;
local temp = 0;
isxn_str = { isxn_str:byte(1, len) }; -- make a table of byte values '0' → 0x30 .. '9' → 0x39, 'X' → 0x58
isxn_str = { isxn_str:byte(1, len) }; -- make a table of byte values '0' → 0x30 .. '9' → 0x39, 'X' → 0x58
len = len+1; -- adjust to be a loop counter
len = len+1; -- adjust to be a loop counter
for i, v in ipairs( isxn_str ) do -- loop through all of the bytes and calculate the checksum
for i, v in ipairs( isxn_str ) do -- loop through all of the bytes and calculate the checksum
if v == string.byte( "X" ) then -- if checkdigit is X (compares the byte value of 'X' which is 0x58)
if v == string.byte( "X" ) then -- if checkdigit is X (compares the byte value of 'X' which is 0x58)
temp = temp + 10*( len - i ); -- it represents 10 decimal
temp = temp + 10*( len - i ); -- it represents 10 decimal
else
else
temp = temp + tonumber( string.char(v) )*(len-i);
temp = temp + tonumber( string.char(v) )*(len-i);
end
end
end
end
return temp % 11 == 0; -- returns true if calculation result is zero
return temp % 11 == 0; -- returns true if calculation result is zero
end
end


Line 250: Line 322:
err_cat = err_cat and table.concat ({' ', set_error ('bad_arxiv')}) or ''; -- set error message if flag is true
err_cat = err_cat and table.concat ({' ', set_error ('bad_arxiv')}) or ''; -- set error message if flag is true
text = external_link_id({link = handler.link, label = handler.label, q = handler.q,
text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=handler.access}) .. err_cat;
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=handler.access}) .. err_cat;


Line 277: Line 349:
1–4 must be digits and must represent a year in the range of 1000 – next year
1–4 must be digits and must represent a year in the range of 1000 – next year
5 must be a letter
5 must be a letter
6 must be letter, ampersand, or dot (ampersand cannot directly precede a dot; &. )
6–8 must be letter, digit, ampersand, or dot (ampersand cannot directly precede a dot; &. )
7–8 must be letter, digit, ampersand, or dot (ampersand cannot directly precede a dot; &. )
9–18 must be letter, digit, or dot
9–18 must be letter, digit, or dot
19 must be a letter or dot
19 must be a letter or dot
Line 289: Line 360:
local year;
local year;


local text = external_link_id({link=handler.link, label=handler.label, q = handler.q,
local text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode,
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode,
access=access});
access=access});
if 19 ~= id:len() then
if 19 ~= id:len() then
err_type = 'length';
err_type = cfg.err_msg_supl.length;
else
else
year = id:match ("^(%d%d%d%d)[%a][%a&%.][%a&%.%d][%a&%.%d][%a%d%.]+[%a%.]$") --  
year = id:match ("^(%d%d%d%d)[%a][%w&%.][%w&%.][%w&%.][%w.]+[%a%.]$") --  
if not year then -- if nil then no pattern match
if not year then -- if nil then no pattern match
err_type = 'value'; -- so value error
err_type = cfg.err_msg_supl.value; -- so value error
else
else
local next_year = tonumber(os.date ('%Y'))+1; -- get the current year as a number and add one for next year
local next_year = tonumber(os.date ('%Y'))+1; -- get the current year as a number and add one for next year
year = tonumber (year); -- convert year portion of bibcode to a number
year = tonumber (year); -- convert year portion of bibcode to a number
if (1000 > year) or (year > next_year) then
if (1000 > year) or (year > next_year) then
err_type = 'year'; -- year out of bounds
err_type = cfg.err_msg_supl.year; -- year out of bounds
end
end
if id:find('&%.') then
if id:find('&%.') then
err_type = 'journal'; -- journal abbreviation must not have '&.' (if it does its missing a letter)
err_type = cfg.err_msg_supl.journal; -- journal abbreviation must not have '&.' (if it does its missing a letter)
end
end
end
end
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--[[--------------------------< B I O R X I V >-----------------------------------------------------------------
--[[--------------------------< B I O R X I V >-----------------------------------------------------------------


Format bioRxiv id and do simple error checking.  BiorXiv ids are exactly 6 digits.
Format bioRxiv id and do simple error checking.  Before 2019-12-11, biorXiv ids were 10.1101/ followed by exactly
The bioRxiv id is the number following the last slash in the bioRxiv-issued DOI:
6 digits.  After 2019-12-11, biorXiv ids retained the six-digit identifier but prefixed that with a yyyy.mm.dd.
https://doi.org/10.1101/078733 -> 078733
date and suffixed with an optional version identifier.
 
The bioRxiv id is the string of characters:
https://doi.org/10.1101/078733 -> 10.1101/078733
or a date followed by a six-digit number followed by an optional version indicator 'v' and one or more digits:
https://www.biorxiv.org/content/10.1101/2019.12.11.123456v2 -> 10.1101/2019.12.11.123456v2
see https://www.biorxiv.org/about-biorxiv


]]
]]
Line 328: Line 406:
local function biorxiv(id)
local function biorxiv(id)
local handler = cfg.id_handlers['BIORXIV'];
local handler = cfg.id_handlers['BIORXIV'];
local err_cat = ''; -- presume that bioRxiv id is valid
local err_cat = true; -- flag; assume that there will be an error
if nil == id:match("^%d%d%d%d%d%d$") then -- if bioRxiv id has anything but six digits
local patterns = {
err_cat = ' ' .. set_error( 'bad_biorxiv'); -- set an error message
'^10.1101/%d%d%d%d%d%d$', -- simple 6-digit identifier (before 2019-12-11)
end
'^10.1101/(20[1-9]%d)%.([01]%d)%.([0-3]%d)%.%d%d%d%d%d%dv%d+$', -- y.m.d. date + 6-digit identifier + version (after 2019-12-11)
'^10.1101/(20[1-9]%d)%.([01]%d)%.([0-3]%d)%.%d%d%d%d%d%d$', -- y.m.d. date + 6-digit identifier (after 2019-12-11)
}
return external_link_id({link = handler.link, label = handler.label, q = handler.q,
for _, pattern in ipairs (patterns) do -- spin through the patterns looking for a match
if id:match (pattern) then
local y, m, d = id:match (pattern); -- found a match, attempt to get year, month and date from the identifier
 
if m then -- m is nil when id is the six-digit form
if not is_valid_biorxiv_date (y .. '-' .. m .. '-' .. d) then -- validate the encoded date; TODO: don't ignore leapyear and actual month lengths ({{#time:}} is a poor date validator)
break; -- date fail; break out early so we don't unset the error message
end
end
err_cat = nil; -- we found a match so unset the error message
break; -- and done
end
end -- err_cat remains set here when no match
 
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator,
prefix=handler.prefix,id=id,separator=handler.separator,
encode=handler.encode, access=handler.access}) .. err_cat;
encode=handler.encode, access=handler.access}) .. (err_cat and (' ' .. set_error( 'bad_biorxiv')) or '');
end
end


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local matched;
local matched;
local text = external_link_id({link=handler.link, label=handler.label, q = handler.q,
local text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode,
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode,
access=handler.access});
access=handler.access});
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if is_set(inactive) then
if is_set(inactive) then
local inactive_year = inactive:match("%d%d%d%d") or ''; -- try to get the year portion from the inactive date
local inactive_year = inactive:match("%d%d%d%d") or ''; -- try to get the year portion from the inactive date
if is_set(inactive_year) then
local inactive_month, good;
table.insert( z.error_categories, "Pages with DOIs inactive since " .. inactive_year );
 
if is_set (inactive_year) then
if 4 < inactive:len() then -- inactive date has more than just a year (could be anything)
local lang_obj = mw.getContentLanguage(); -- get a language object for this wiki
good, inactive_month = pcall (lang_obj.formatDate, lang_obj, 'F', inactive); -- try to get the month name from the inactive date
if not good then
inactive_month = nil; -- something went wrong so make sure this is unset
end
end
else
inactive_year = nil; -- |doi-broken= has something but it isn't a date
end
if is_set(inactive_year) and is_set (inactive_month) then
table.insert( z.error_categories, 'Pages with DOIs inactive as of ' .. inactive_year .. ' ' .. inactive_month); -- use inactive month in category name
elseif is_set(inactive_year) then
table.insert( z.error_categories, 'Pages with DOIs inactive as of ' .. inactive_year);
else
else
table.insert( z.error_categories, "Pages with inactive DOIs" ); -- when inactive doesn't contain a recognizable year
table.insert( z.error_categories, 'Pages with inactive DOIs'); -- when inactive doesn't contain a recognizable date
end
end
inactive = " (" .. cfg.messages['inactive'] .. " " .. inactive .. ")"
inactive = " (" .. cfg.messages['inactive'] .. ' ' .. inactive .. ')';
end
end
text = external_link_id({link = handler.link, label = handler.label, q = handler.q,
 
text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=access}) .. (inactive or '')
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=access}) .. (inactive or '')


if nil == id:match("^10%.[^%s–]-/[^%s–]-[^%.,]$") then -- doi must begin with '10.', must contain a fwd slash, must not contain spaces or endashes, and must not end with period or comma
local registrant = id:match ('^10%.([^/]+)/[^%s–]-[^%.,]$'); -- registrant set when doi has the proper basic form
cat = ' ' .. set_error( 'bad_doi' );
registrant_err_patterns = { -- these patterns are for code ranges that are not supported
'^[^1-3]%d%d%d%d%.%d%d*$', -- 5 digits with subcode (0xxxx, 40000+); accecpts: 10000–39999
'^[^1-4]%d%d%d%d$', -- 5 digits without subcode (0xxxx, 40000+); accecpts: 10000–49999
'^[^1-9]%d%d%d%.%d%d*$', -- 4 digits with subcode (0xxx); accecpts: 1000–9999
'^[^1-9]%d%d%d$', -- 4 digits without subcode (0xxx); accecpts: 1000–9999
'^%d%d%d%d%d%d+', -- 6 or more digits
'^%d%d?%d?$', -- less than 4 digits without subcode (with subcode is legitimate)
'^5555$', -- test registrant will never resolve
'%s', -- any space character in registrant
}
if registrant then -- when doi has proper form
for i, pattern in ipairs (registrant_err_patterns) do -- spin through error patterns
if registrant:match (pattern) then -- to validate registrant codes
cat = ' ' .. set_error ('bad_doi'); -- when found, mark this doi as bad
break; -- and done
end
end
else
cat = ' ' .. set_error ('bad_doi'); -- invalid directory or malformed
end
end


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terminal punctuation may not be technically correct but it appears, that in practice these characters are rarely
terminal punctuation may not be technically correct but it appears, that in practice these characters are rarely
if ever used in HDLs.
if ever used in HDLs.
Query string parameters are named here: http://www.handle.net/proxy_servlet.html.  query strings are not displayed
but since '?' is anallowed character in an hdl, '?' followed by one of the query parameters is the only way we
have to detect the query string so that it isn't url encoded with the rest of the identifier.


]]
]]
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local function hdl(id, access)
local function hdl(id, access)
local handler = cfg.id_handlers['HDL'];
local handler = cfg.id_handlers['HDL'];
local query_params = { -- list of known query parameters from http://www.handle.net/proxy_servlet.html
'noredirect',
'ignore_aliases',
'auth',
'cert',
'index',
'type',
'urlappend',
'locatt',
'action',
}
local text = external_link_id({link = handler.link, label = handler.label, q = handler.q,
local hdl, suffix, param = id:match ('(.-)(%?(%a+).+)$'); -- look for query string
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=access})
local found;
 
if hdl then -- when there are query strings, this is the handle identifier portion
for _, q in ipairs (query_params) do -- spin through the list of query parameters
if param:match ('^' .. q) then -- if the query string begins with one of the parameters
found = true; -- announce a find
break; -- and stop looking
end
end
end
 
if found then
id = hdl; -- found so replace id with the handle portion; this will be url encoded, suffix will not
else
suffix = ''; -- make sure suffix is empty string for concatenation else
end
 
local text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix, id=id, suffix=suffix, separator=handler.separator, encode=handler.encode, access=access})


if nil == id:match("^[^%s–]-/[^%s–]-[^%.,]$") then -- hdl must contain a fwd slash, must not contain spaces, endashes, and must not end with period or comma
if nil == id:match("^[^%s–]-/[^%s–]-[^%.,]$") then -- hdl must contain a fwd slash, must not contain spaces, endashes, and must not end with period or comma
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local function isbn( isbn_str )
local function isbn( isbn_str )
if nil ~= isbn_str:match("[^%s-0-9X]") then
if nil ~= isbn_str:match("[^%s-0-9X]") then
return false, 'invalid character'; -- fail if isbn_str contains anything but digits, hyphens, or the uppercase X
return false, cfg.err_msg_supl.char; -- fail if isbn_str contains anything but digits, hyphens, or the uppercase X
end
end
isbn_str = isbn_str:gsub( "-", "" ):gsub( " ", "" ); -- remove hyphens and spaces
isbn_str = isbn_str:gsub( "-", "" ):gsub( " ", "" ); -- remove hyphens and spaces
Line 449: Line 613:
   
   
if len ~= 10 and len ~= 13 then
if len ~= 10 and len ~= 13 then
return false, 'length'; -- fail if incorrect length
return false, cfg.err_msg_supl.length; -- fail if incorrect length
end
end


if len == 10 then
if len == 10 then
if isbn_str:match( "^%d*X?$" ) == nil then -- fail if isbn_str has 'X' anywhere but last position
if isbn_str:match( "^%d*X?$" ) == nil then -- fail if isbn_str has 'X' anywhere but last position
return false, 'invalid form';
return false, cfg.err_msg_supl.form;
end
end
return is_valid_isxn(isbn_str, 10), 'checksum';
return is_valid_isxn(isbn_str, 10), cfg.err_msg_supl.check;
else
else
if isbn_str:match( "^%d+$" ) == nil then
if isbn_str:match( "^%d+$" ) == nil then
return false, 'invalid character'; -- fail if isbn13 is not all digits
return false, cfg.err_msg_supl.char; -- fail if isbn13 is not all digits
end
end
if isbn_str:match( "^97[89]%d*$" ) == nil then
if isbn_str:match( "^97[89]%d*$" ) == nil then
return false, 'invalid prefix'; -- fail when isbn13 does not begin with 978 or 979
return false, cfg.err_msg_supl.prefix; -- fail when isbn13 does not begin with 978 or 979
end
if isbn_str:match ('^9790') then
return false, cfg.err_msg_supl.group; -- group identifier '0' is reserved to ismn
end
end
return is_valid_isxn_13 (isbn_str), 'checksum';
return is_valid_isxn_13 (isbn_str), cfg.err_msg_supl.check;
end
end
end
end
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end
end
local handler = cfg.id_handlers['ASIN'];
local handler = cfg.id_handlers['ASIN'];
return external_link_id({link=handler.link,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
label=handler.label, q = handler.q, prefix=handler.prefix .. domain .. "/dp/",
prefix=handler.prefix .. domain .. "/dp/",
id=id, encode=handler.encode, separator = handler.separator}) .. err_cat;
id=id, encode=handler.encode, separator = handler.separator}) .. err_cat;
end
end
Line 533: Line 700:
end
end


-- text = internal_link_id({link = handler.link, label = handler.label, -- use this (or external version) when there is some place to link to
-- text = internal_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect, -- use this (or external version) when there is some place to link to
-- prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
-- prefix=handler.prefix, id=id_copy, separator=handler.separator, encode=handler.encode})
   
   
text = table.concat (
local label_link = (cfg.use_identifier_redirects and is_set (handler.redirect) and handler.redirect) or wd_article or handler.link; -- because no place to link to yet
 
text = table.concat ( -- because no place to link to yet
{
{
make_wikilink (handler.link, handler.label),
make_wikilink (label_link, handler.label),
handler.separator,
handler.separator,
id_copy
id_copy
}); -- because no place to link to yet
});


if false == valid_ismn then
if false == valid_ismn then
Line 592: Line 761:
end
end
text = external_link_id({link = handler.link, label = handler.label, q = handler.q,
text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
 
if false == valid_issn then
if false == valid_issn then
text = text .. ' ' .. set_error( 'bad_issn', e and 'e' or '' ) -- add an error message if the issn is invalid
text = text .. ' ' .. set_error( 'bad_issn', e and 'e' or '' ) -- add an error message if the issn is invalid
Line 628: Line 797:
end
end
return external_link_id({link = handler.link, label = handler.label, q = handler.q,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
end
Line 685: Line 854:
end
end


return external_link_id({link = handler.link, label = handler.label, q = handler.q,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=lccn,separator=handler.separator, encode=handler.encode}) .. err_cat;
prefix=handler.prefix,id=lccn,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
end
Line 717: Line 886:
end
end
return external_link_id({link = handler.link, label = handler.label, q = handler.q,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
end
Line 724: Line 893:
--[[--------------------------< O C L C >----------------------------------------------------------------------
--[[--------------------------< O C L C >----------------------------------------------------------------------


Validate and format an oclc id.  https://www.oclc.org/batchload/controlnumber.en.html
Validate and format an oclc id.  https://www.oclc.org/batchload/controlnumber.en.html {{dead link}}
archived at: https://web.archive.org/web/20161228233804/https://www.oclc.org/batchload/controlnumber.en.html


]]
]]
Line 757: Line 927:
end
end
local text = external_link_id({link=handler.link, label=handler.label, q = handler.q,
local text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode}) .. err_msg;
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode}) .. err_msg;


Line 778: Line 948:


if not is_set (ident) then -- if malformed return an error
if not is_set (ident) then -- if malformed return an error
return external_link_id({link=handler.link, label=handler.label, q = handler.q,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix .. 'OL',
prefix=handler.prefix .. 'OL',
id=id, separator=handler.separator, encode = handler.encode,
id=id, separator=handler.separator, encode = handler.encode,
Line 787: Line 957:
if ( code == "A" ) then
if ( code == "A" ) then
return external_link_id({link=handler.link, label=handler.label, q = handler.q,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix .. 'authors/OL',
prefix=handler.prefix .. 'authors/OL',
id=id, separator=handler.separator, encode = handler.encode,
id=id, separator=handler.separator, encode = handler.encode,
Line 794: Line 964:
if ( code == "M" ) then
if ( code == "M" ) then
return external_link_id({link=handler.link, label=handler.label, q = handler.q,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix .. 'books/OL',
prefix=handler.prefix .. 'books/OL',
id=id, separator=handler.separator, encode = handler.encode,
id=id, separator=handler.separator, encode = handler.encode,
Line 801: Line 971:


if ( code == "W" ) then
if ( code == "W" ) then
return external_link_id({link=handler.link, label=handler.label, q = handler.q,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix .. 'works/OL',
prefix=handler.prefix .. 'works/OL',
id=id, separator=handler.separator, encode = handler.encode,
id=id, separator=handler.separator, encode = handler.encode,
Line 827: Line 997:


local function pmc(id, embargo)
local function pmc(id, embargo)
local test_limit = 6500000; -- update this value as PMCs approach
local handler = cfg.id_handlers['PMC'];
local handler = cfg.id_handlers['PMC'];
local err_cat = ''; -- presume that PMC is valid
local err_cat = ''; -- presume that PMC is valid
Line 843: Line 1,012:
if is_set (id_num) then -- id_num has a value so test it
if is_set (id_num) then -- id_num has a value so test it
id_num = tonumber(id_num); -- convert id_num to a number for range testing
id_num = tonumber(id_num); -- convert id_num to a number for range testing
if 1 > id_num or test_limit < id_num then -- if PMC is outside test limit boundaries
if 1 > id_num or handler.id_limit < id_num then -- if PMC is outside test limit boundaries
err_cat = ' ' .. set_error( 'bad_pmc' ); -- set an error message
err_cat = ' ' .. set_error( 'bad_pmc' ); -- set an error message
else
else
Line 861: Line 1,030:
});
});
else
else
text = external_link_id({link = handler.link, label = handler.label, q = handler.q, -- no embargo date or embargo has expired, ok to link to article
text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect, -- no embargo date or embargo has expired, ok to link to article
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=handler.access}) .. err_cat;
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=handler.access}) .. err_cat;
end
end
Line 877: Line 1,046:


local function pmid(id)
local function pmid(id)
local test_limit = 32000000; -- update this value as PMIDs approach
local handler = cfg.id_handlers['PMID'];
local handler = cfg.id_handlers['PMID'];
local err_cat = ''; -- presume that PMID is valid
local err_cat = ''; -- presume that PMID is valid
Line 885: Line 1,053:
else -- PMID is only digits
else -- PMID is only digits
local id_num = tonumber(id); -- convert id to a number for range testing
local id_num = tonumber(id); -- convert id to a number for range testing
if 1 > id_num or test_limit < id_num then -- if PMID is outside test limit boundaries
if 1 > id_num or handler.id_limit < id_num then -- if PMID is outside test limit boundaries
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
end
end
end
end
return external_link_id({link = handler.link, label = handler.label, q = handler.q,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
--[[--------------------------< S 2 C I D >--------------------------------------------------------------------
Format an s2cid, do simple error checking
S2CIDs are sequential numbers beginning at 1 and counting up.  This code checks the s2cid to see that it is only
digits and is less than test_limit; the value in local variable test_limit will need to be updated periodically
as more S2CIDs are issued.
]]
local function s2cid (id, access)
local handler = cfg.id_handlers['S2CID'];
local err_cat = ''; -- presume that S2CID is valid
local id_num;
local text;
id_num = id:match ('^[1-9]%d*$'); -- id must be all digits; must not begin with 0; no open access flag
if is_set (id_num) then -- id_num has a value so test it
id_num = tonumber(id_num); -- convert id_num to a number for range testing
if handler.id_limit < id_num then -- if S2CID is outside test limit boundaries
err_cat = ' ' .. set_error( 'bad_s2cid' ); -- set an error message
end
else -- when id format incorrect
err_cat = ' ' .. set_error( 'bad_s2cid' ); -- set an error message
end
text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix, id=id:gsub ('%.%a%a', ''), separator=handler.separator, encode=handler.encode, access=access}) .. err_cat;
return text;
end
--[[--------------------------< S B N >------------------------------------------------------------------------
9-digit form of isbn10; uses same check-digit validation when sbn is prefixed with an additional '0' to make 10 digits
]]
local function sbn (id)
local check;
local err_type = '';
if nil ~= id:match("[^%s-0-9X]") then
return false, cfg.err_msg_supl.char; -- fail if sbn contains anything but digits, hyphens, or the uppercase X
end
id=id:gsub( "[%s-]", "" ); -- strip spaces and hyphens from the sbn
if  9 ~= id:len() then
return false, cfg.err_msg_supl.length; -- fail if incorrect length
end
if id:match( "^%d*X?$" ) == nil then -- fail if sbn has 'X' anywhere but last position
return false, cfg.err_msg_supl.form;
end
return is_valid_isxn('0' .. id, 10), cfg.err_msg_supl.check; -- prefix sbn with '0' and validate as isbn10
end
end


Line 906: Line 1,137:


local function ssrn (id)
local function ssrn (id)
local test_limit = 3500000; -- update this value as SSRNs approach
local handler = cfg.id_handlers['SSRN'];
local handler = cfg.id_handlers['SSRN'];
local err_cat = ''; -- presume that SSRN is valid
local err_cat = ''; -- presume that SSRN is valid
Line 916: Line 1,146:
if is_set (id_num) then -- id_num has a value so test it
if is_set (id_num) then -- id_num has a value so test it
id_num = tonumber(id_num); -- convert id_num to a number for range testing
id_num = tonumber(id_num); -- convert id_num to a number for range testing
if 100 > id_num or test_limit < id_num then -- if SSRN is outside test limit boundaries
if 100 > id_num or handler.id_limit < id_num then -- if SSRN is outside test limit boundaries
err_cat = ' ' .. set_error( 'bad_ssrn' ); -- set an error message
err_cat = ' ' .. set_error( 'bad_ssrn' ); -- set an error message
end
end
Line 923: Line 1,153:
end
end
text = external_link_id({link = handler.link, label = handler.label, q = handler.q,
text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=handler.access}) .. err_cat;
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=handler.access}) .. err_cat;


Line 940: Line 1,170:
local handler = cfg.id_handlers['USENETID'];
local handler = cfg.id_handlers['USENETID'];


local text = external_link_id({link = handler.link, label = handler.label, q = handler.q,
local text = external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
   
   
Line 954: Line 1,184:


A numerical identifier in the form nnnn.nnnnn - leading zeros in the first quartet optional
A numerical identifier in the form nnnn.nnnnn - leading zeros in the first quartet optional
format described here: http://emis.mi.sanu.ac.rs/ZMATH/zmath/en/help/search/
temporary format is apparently eight digits.  Anything else is an error


]]
]]
Line 959: Line 1,193:
local function zbl (id)
local function zbl (id)
local handler = cfg.id_handlers['ZBL'];
local handler = cfg.id_handlers['ZBL'];
local id_num;
local err_cat = '';
local err_cat = '';
id_num = id:match ('^[Zz][Bb][Ll](.*)$'); -- identifier with zbl prefix; extract identifier
if id:match('^%d%d%d%d%d%d%d%d$') then -- is this identifier using temporary format?
 
add_maint_cat ('zbl'); -- yes, add maint cat
if is_set (id_num) then
elseif not id:match('^%d?%d?%d?%d%.%d%d%d%d%d$') then -- not temporary, is it normal format?
add_maint_cat ('zbl_format');
err_cat = ' ' .. set_error( 'bad_zbl' ); -- no, set an error message
else -- plain number without zbl prefix
id_num = id; -- if here id does not have prefix
end
 
if id_num:match('^%d?%d?%d?%d%.%d%d%d%d%d$') then
id = id_num; -- id matches pattern
else
err_cat = ' ' .. set_error( 'bad_zbl' ); -- set an error message
end
end
return external_link_id({link = handler.link, label = handler.label, q = handler.q,
return external_link_id ({link=handler.link, label=handler.label, q=handler.q, redirect=handler.redirect,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
end
Line 1,057: Line 1,282:
elseif k == 'PMID' then
elseif k == 'PMID' then
table.insert( new_list, {handler.label, pmid( v ) } );
table.insert( new_list, {handler.label, pmid( v ) } );
elseif k == 'S2CID' then
table.insert( new_list, {handler.label, s2cid( v, handler.access ) } );
elseif k == 'SBN' then
local SBN = internal_link_id (handler);
local check; -- boolean validation result
local err_type = '';
check, err_type = sbn (v);
if not check then
SBN = SBN .. set_error( 'bad_sbn', {err_type}, false, " ", "" ); -- display an error message
end
table.insert( new_list, {handler.label, SBN } );
elseif k == 'SSRN' then
elseif k == 'SSRN' then
table.insert( new_list, {handler.label, ssrn( v ) } );
table.insert( new_list, {handler.label, ssrn( v ) } );
Line 1,104: Line 1,340:
Parameters which have a predefined access level (e.g. arxiv) do not use this
Parameters which have a predefined access level (e.g. arxiv) do not use this
function as they are directly rendered as free without using an additional parameter.
function as they are directly rendered as free without using an additional parameter.
access-level values must match the case used in cfg.keywords_lists['id-access'] (lowercase unless there is some special reason for something else)


]]
]]
Line 1,110: Line 1,348:
local id_accesses_list = {};
local id_accesses_list = {};
for k, v in pairs( cfg.id_handlers ) do
for k, v in pairs( cfg.id_handlers ) do
local access_param = v.custom_access;
local access_param = v.custom_access; -- name of identifier's access-level parameter
local k_lower = string.lower(k);
if is_set(access_param) then
if is_set(access_param) then
local access_level = args[access_param];
local access_level = args[access_param]; -- get the assigned value if there is one
if is_set(access_level) then
if is_set (access_level) then
if not in_array (access_level:lower(), cfg.keywords['id-access']) then
if not in_array (access_level, cfg.keywords_lists['id-access']) then -- exact match required
table.insert( z.message_tail, { set_error( 'invalid_param_val', {access_param, access_level}, true ) } );
table.insert( z.message_tail, { set_error( 'invalid_param_val', {access_param, access_level}, true ) } );
access_level = nil;
access_level = nil; -- invalid so unset
end
end
if not is_set(id_list[k]) then
if not is_set(id_list[k]) then -- identifer access-level must have a matching identifier
table.insert( z.message_tail, { set_error( 'param_access_requires_param', {k_lower}, true ) } );
table.insert( z.message_tail, { set_error( 'param_access_requires_param', {k:lower()}, true ) } ); -- param name is uppercase in cfg.id_handlers (k); lowercase for error message
end
end
if is_set(access_level) then
id_accesses_list[k] = cfg.keywords_xlate[access_level]; -- get translated keyword
access_level = access_level:lower();
end
id_accesses_list[k] = access_level;
end
end
end
end
Line 1,153: Line 1,387:
end
end


--[[--------------------------< E X P O R T E D  F U N C T I O N S >------------------------------------------
]]


return {
return {
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