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Module:Citation/CS1/Identifiers (edit)

Revision as of 10:41, 4 November 2017

4,007 bytes added ,  7 years ago
synch from sandbox;
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m>Trappist the monk
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]]
]]


local is_set, in_array, set_error, select_one, add_maint_cat, substitute; -- functions in Module:Citation/CS1/Utilities
local is_set, in_array, set_error, select_one, add_maint_cat, substitute, make_wikilink; -- functions in Module:Citation/CS1/Utilities


local z; -- table of tables defined in Module:Citation/CS1/Utilities
local z; -- table of tables defined in Module:Citation/CS1/Utilities
Line 12: Line 12:
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


--============================<< 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 32: Line 34:
end
end
return mw.ustring.format( '[[%s|%s]]%s%s', options.link, options.label, options.separator or "&nbsp;", ext_link);
return table.concat ({
make_wikilink (options.link, options.label),
options.separator or '&nbsp;',
ext_link
});
end
end


Line 43: Line 49:


local function internal_link_id(options)
local function internal_link_id(options)
return mw.ustring.format( '[[%s|%s]]%s[[%s%s%s|%s]]',
 
options.link, options.label, options.separator or "&nbsp;",
return table.concat (
options.prefix, options.id, options.suffix or "",
{
mw.text.nowiki(options.id)
make_wikilink (options.link, options.label),
);
options.separator or '&nbsp;',
make_wikilink (
table.concat (
{
options.prefix,
options.id,
options.suffix or ''
}),
mw.text.nowiki (options.id)
);
});
end
 
 
--[[--------------------------< I S _ E M B A R G O E D >------------------------------------------------------
 
Determines if a PMC identifier's online version is embargoed. Compares the date in |embargo= against today's date.  If embargo date is
in the future, returns the content of |embargo=; otherwise, returns and empty string because the embargo has expired or because
|embargo= was not set in this cite.
 
]]
 
local function is_embargoed (embargo)
if is_set (embargo) then
local lang = mw.getContentLanguage();
local good1, embargo_date, good2, todays_date;
good1, embargo_date = pcall( lang.formatDate, lang, 'U', embargo );
good2, todays_date = pcall( lang.formatDate, lang, 'U' );
if good1 and good2 then -- if embargo date and today's date are good dates
if tonumber( embargo_date ) >= tonumber( todays_date ) then -- is embargo date is in the future?
return embargo; -- still embargoed
else
add_maint_cat ('embargo')
return ''; -- unset because embargo has expired
end
end
end
return ''; -- |embargo= not set return empty string
end
end


Line 54: Line 98:


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


If the number is valid the result will be 0. Before calling this function, issbn/issn must be checked for length
If the number is valid the result will be 0. Before calling this function, issbn/issn must be checked for length
Line 63: Line 107:
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
Line 76: Line 120:




--[[--------------------------< IS _ V A L I D _ I S X N _ 1 3 >----------------------------------------------
--[[--------------------------< IS _ V A L I D _ I S X N _ 1 3 >-----------------------------------------------


ISBN-13 and ISMN validator code calculates checksum across all 13 isbn/ismn digits including the check digit.
ISBN-13 and ISMN validator code calculates checksum across all 13 isbn/ismn digits including the check digit.
Line 87: Line 131:
local temp=0;
local temp=0;
isxn_str = { isxn_str:byte(1, 13) }; -- make a table of byte values '0' → 0x30 .. '9' → 0x39
isxn_str = { isxn_str:byte(1, 13) }; -- make a table of byte values '0' → 0x30 .. '9' → 0x39
for i, v in ipairs( isxn_str ) do
for i, v in ipairs( isxn_str ) do
temp = temp + (3 - 2*(i % 2)) * tonumber( string.char(v) ); -- multiply odd index digits by 1, even index digits by 3 and sum; includes check digit
temp = temp + (3 - 2*(i % 2)) * tonumber( string.char(v) ); -- multiply odd index digits by 1, even index digits by 3 and sum; includes check digit
Line 95: Line 139:




--[[--------------------------< C H E C K _ I S B N >------------------------------------------------------------
--[[--------------------------< N O R M A L I Z E _ L C C N >--------------------------------------------------


Determines whether an ISBN string is valid
lccn normalization (http://www.loc.gov/marc/lccn-namespace.html#normalization)
1. Remove all blanks.
2. If there is a forward slash (/) in the string, remove it, and remove all characters to the right of the forward slash.
3. If there is a hyphen in the string:
a. Remove it.
b. Inspect the substring following (to the right of) the (removed) hyphen. Then (and assuming that steps 1 and 2 have been carried out):
1. All these characters should be digits, and there should be six or less. (not done in this function)
2. If the length of the substring is less than 6, left-fill the substring with zeroes until the length is six.


Returns a normalized lccn for lccn() to validate.  There is no error checking (step 3.b.1) performed in this function.
]]
]]


local function check_isbn( isbn_str )
local function normalize_lccn (lccn)
if nil ~= isbn_str:match("[^%s-0-9X]") then
lccn = lccn:gsub ("%s", ""); -- 1. strip whitespace
return false, 'invalid character'; -- fail if isbn_str contains anything but digits, hyphens, or the uppercase X
end
isbn_str = isbn_str:gsub( "-", "" ):gsub( " ", "" ); -- remove hyphens and spaces
local len = isbn_str:len();
if len ~= 10 and len ~= 13 then
return false, 'length'; -- fail if incorrect length
end


if len == 10 then
if nil ~= string.find (lccn,'/') then
if isbn_str:match( "^%d*X?$" ) == nil then -- fail if isbn_str has 'X' anywhere but last position
lccn = lccn:match ("(.-)/"); -- 2. remove forward slash and all character to the right of it
return false, 'invalid form';
end
return is_valid_isxn(isbn_str, 10), 'checksum';
else
if isbn_str:match( "^%d+$" ) == nil then
return false, 'invalid character'; -- fail if isbn13 is not all digits
end
if isbn_str:match( "^97[89]%d*$" ) == nil then
return false, 'invalid prefix'; -- fail when isbn13 does not begin with 978 or 979
end
return is_valid_isxn_13 (isbn_str), 'checksum';
end
end
end


local prefix
local suffix
prefix, suffix = lccn:match ("(.+)%-(.+)"); -- 3.a remove hyphen by splitting the string into prefix and suffix


--[[--------------------------< I S M N >----------------------------------------------------------------------
if nil ~= suffix then -- if there was a hyphen
 
suffix=string.rep("0", 6-string.len (suffix)) .. suffix; -- 3.b.2 left fill the suffix with 0s if suffix length less than 6
Determines whether an ISMN string is valid.  Similar to isbn-13, ismn is 13 digits begining 979-0-... and uses the
lccn=prefix..suffix; -- reassemble the lccn
same check digit calculations.  See http://www.ismn-international.org/download/Web_ISMN_Users_Manual_2008-6.pdf
section 2, pages 9–12.
 
]]
 
local function ismn (id)
local handler = cfg.id_handlers['ISMN'];
local text;
local valid_ismn = true;
local id_copy;
 
id_copy = id; -- save a copy because this testing is destructive
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and endashes from the ismn
 
if 13 ~= id:len() or id:match( "^9790%d*$" ) == nil then -- ismn must be 13 digits and begin 9790
valid_ismn = false;
else
valid_ismn=is_valid_isxn_13 (id); -- validate ismn
end
 
-- text = internal_link_id({link = handler.link, label = handler.label, -- use this (or external version) when there is some place to link to
-- prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
text="[[" .. handler.link .. "|" .. handler.label .. "]]" .. handler.separator .. id_copy; -- because no place to link to yet
 
if false == valid_ismn then
text = text .. ' ' .. set_error( 'bad_ismn' ) -- add an error message if the ismn is invalid
end
return text;
end
 
 
--[[--------------------------< I S S N >----------------------------------------------------------------------
 
Validate and format an issn.  This code fixes the case where an editor has included an ISSN in the citation but
has separated the two groups of four digits with a space.  When that condition occurred, the resulting link looked
like this:
 
|issn=0819 4327 gives: [http://www.worldcat.org/issn/0819 4327 0819 4327]  -- can't have spaces in an external link
This code now prevents that by inserting a hyphen at the issn midpoint.  It also validates the issn for length
and makes sure that the checkdigit agrees with the calculated value.  Incorrect length (8 digits), characters
other than 0-9 and X, or checkdigit / calculated value mismatch will all cause a check issn error message. The
issn is always displayed with a hyphen, even if the issn was given as a single group of 8 digits.
 
]]
 
local function issn(id, e)
local issn_copy = id; -- save a copy of unadulterated issn; use this version for display if issn does not validate
local handler;
local text;
local valid_issn = true;
if e then
handler = cfg.id_handlers['EISSN'];
else
handler = cfg.id_handlers['ISSN'];
end
 
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and endashes from the issn
 
if 8 ~= id:len() or nil == id:match( "^%d*X?$" ) then -- validate the issn: 8 digits long, containing only 0-9 or X in the last position
valid_issn=false; -- wrong length or improper character
else
valid_issn=is_valid_isxn(id, 8); -- validate issn
end
 
if true == valid_issn then
id = string.sub( id, 1, 4 ) .. "-" .. string.sub( id, 5 ); -- if valid, display correctly formatted version
else
id = issn_copy; -- if not valid, use the show the invalid issn with error message
end
end
text = external_link_id({link = handler.link, label = handler.label,
return lccn;
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
if false == valid_issn then
text = text .. ' ' .. set_error( 'bad_issn', e and 'e' or '' ) -- add an error message if the issn is invalid
end
return text
end
 
 
--[[--------------------------< A M A Z O N >------------------------------------------------------------------
 
Formats a link to Amazon.  Do simple error checking: asin must be mix of 10 numeric or uppercase alpha
characters.  If a mix, first character must be uppercase alpha; if all numeric, asins must be 10-digit
isbn. If 10-digit isbn, add a maintenance category so a bot or awb script can replace |asin= with |isbn=.
Error message if not 10 characters, if not isbn10, if mixed and first character is a digit.
 
]]
 
local function amazon(id, domain)
local err_cat = ""
 
if not id:match("^[%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u]$") then
err_cat =  ' ' .. set_error ('bad_asin'); -- asin is not a mix of 10 uppercase alpha and numeric characters
else
if id:match("^%d%d%d%d%d%d%d%d%d[%dX]$") then -- if 10-digit numeric (or 9 digits with terminal X)
if check_isbn( id ) then -- see if asin value is isbn10
add_maint_cat ('ASIN');
elseif not is_set (err_cat) then
err_cat =  ' ' .. set_error ('bad_asin'); -- asin is not isbn10
end
elseif not id:match("^%u[%d%u]+$") then
err_cat =  ' ' .. set_error ('bad_asin'); -- asin doesn't begin with uppercase alpha
end
end
end
if not is_set(domain) then
domain = "com";
elseif in_array (domain, {'jp', 'uk'}) then -- Japan, United Kingdom
domain = "co." .. domain;
elseif in_array (domain, {'au', 'br', 'mx'}) then -- Australia, Brazil, Mexico
domain = "com." .. domain;
end
local handler = cfg.id_handlers['ASIN'];
return external_link_id({link=handler.link,
label=handler.label, prefix=handler.prefix .. domain .. "/dp/",
id=id, encode=handler.encode, separator = handler.separator}) .. err_cat;
end


--============================<< I D E N T I F I E R  F U N C T I O N S >>====================================


--[[--------------------------< A R X I V >--------------------------------------------------------------------
--[[--------------------------< A R X I V >--------------------------------------------------------------------
Line 331: Line 249:




--[[--------------------------< B I O R X I V >-----------------------------------------------------------------
--[[--------------------------< A M A Z O N >------------------------------------------------------------------


Format bioRxiv id and do simple error checking.  BiorXiv ids are exactly 6 digits.
Formats a link to Amazon.  Do simple error checking: asin must be mix of 10 numeric or uppercase alpha
The bioRxiv id is the number following the last slash in the bioRxiv-issued DOI:
characters.  If a mix, first character must be uppercase alpha; if all numeric, asins must be 10-digit
https://doi.org/10.1101/078733 -> 078733
isbn. If 10-digit isbn, add a maintenance category so a bot or awb script can replace |asin= with |isbn=.
Error message if not 10 characters, if not isbn10, if mixed and first character is a digit.


]]
]]


local function biorxiv(id)
local function asin(id, domain)
local handler = cfg.id_handlers['BIORXIV'];
local err_cat = ""
local err_cat = ''; -- presume that bioRxiv id is valid
if nil == id:match("^%d%d%d%d%d%d$") then -- if bioRxiv id has anything but six digits
err_cat = ' ' .. set_error( 'bad_biorxiv'); -- set an error message
    end
return external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=id,separator=handler.separator,
encode=handler.encode, access=handler.access}) .. err_cat;
end


 
if not id:match("^[%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u][%d%u]$") then
--[[--------------------------< N O R M A L I Z E _ L C C N >--------------------------------------------------
err_cat = ' ' .. set_error ('bad_asin'); -- asin is not a mix of 10 uppercase alpha and numeric characters
 
else
lccn normalization (http://www.loc.gov/marc/lccn-namespace.html#normalization)
if id:match("^%d%d%d%d%d%d%d%d%d[%dX]$") then -- if 10-digit numeric (or 9 digits with terminal X)
1. Remove all blanks.
if isbn( id ) then -- see if asin value is isbn10
2. If there is a forward slash (/) in the string, remove it, and remove all characters to the right of the forward slash.
add_maint_cat ('ASIN');
3. If there is a hyphen in the string:
elseif not is_set (err_cat) then
a. Remove it.
err_cat = ' ' .. set_error ('bad_asin'); -- asin is not isbn10
b. Inspect the substring following (to the right of) the (removed) hyphen. Then (and assuming that steps 1 and 2 have been carried out):
end
1. All these characters should be digits, and there should be six or less. (not done in this function)
elseif not id:match("^%u[%d%u]+$") then
2. If the length of the substring is less than 6, left-fill the substring with zeroes until the length is six.
err_cat = ' ' .. set_error ('bad_asin'); -- asin doesn't begin with uppercase alpha
 
end
Returns a normalized lccn for lccn() to validate. There is no error checking (step 3.b.1) performed in this function.
end
]]
if not is_set(domain) then
 
domain = "com";
local function normalize_lccn (lccn)
elseif in_array (domain, {'jp', 'uk'}) then -- Japan, United Kingdom
lccn = lccn:gsub ("%s", ""); -- 1. strip whitespace
domain = "co." .. domain;
 
elseif in_array (domain, {'au', 'br', 'mx'}) then -- Australia, Brazil, Mexico
if nil ~= string.find (lccn,'/') then
domain = "com." .. domain;
lccn = lccn:match ("(.-)/"); -- 2. remove forward slash and all character to the right of it
end
end
local handler = cfg.id_handlers['ASIN'];
return external_link_id({link=handler.link,
label=handler.label, prefix=handler.prefix .. domain .. "/dp/",
id=id, encode=handler.encode, separator = handler.separator}) .. err_cat;
end


local prefix
local suffix
prefix, suffix = lccn:match ("(.+)%-(.+)"); -- 3.a remove hyphen by splitting the string into prefix and suffix


if nil ~= suffix then -- if there was a hyphen
--[[--------------------------< B I B C O D E >--------------------------------------------------------------------
suffix=string.rep("0", 6-string.len (suffix)) .. suffix; -- 3.b.2 left fill the suffix with 0s if suffix length less than 6
lccn=prefix..suffix; -- reassemble the lccn
end
return lccn;
end


Validates (sort of) and formats a bibcode id.


--[[--------------------------< L C C N >----------------------------------------------------------------------
Format for bibcodes is specified here: http://adsabs.harvard.edu/abs_doc/help_pages/data.html#bibcodes


Format LCCN link and do simple error checking.  LCCN is a character string 8-12 characters long. The length of
But, this: 2015arXiv151206696F is apparently valid so apparently, the only things that really matter are length, 19 characters
the LCCN dictates the character type of the first 1-3 characters; the rightmost eight are always digits.
and first four digits must be a year. This function makes these tests:
http://info-uri.info/registry/OAIHandler?verb=GetRecord&metadataPrefix=reg&identifier=info:lccn/
length must be 19 characters
 
characters in position
length = 8 then all digits
1–4 must be digits and must represent a year in the range of 1000 – next year
length = 9 then lccn[1] is lower case alpha
5 must be a letter
length = 10 then lccn[1] and lccn[2] are both lower case alpha or both digits
6 must be letter, ampersand, or dot (ampersand cannot directly precede a dot; &. )
length = 11 then lccn[1] is lower case alpha, lccn[2] and lccn[3] are both lower case alpha or both digits
7–8 must be letter, digit, ampersand, or dot (ampersand cannot directly precede a dot; &. )
length = 12 then lccn[1] and lccn[2] are both lower case alpha
9–18 must be letter, digit, or dot
19 must be a letter or dot


]]
]]


local function lccn(lccn)
local function bibcode (id, access)
local handler = cfg.id_handlers['LCCN'];
local handler = cfg.id_handlers['BIBCODE'];
local err_cat =  ''; -- presume that LCCN is valid
local err_type;
local id = lccn; -- local copy of the lccn
local year;


id = normalize_lccn (id); -- get canonical form (no whitespace, hyphens, forward slashes)
local text = external_link_id({link=handler.link, label=handler.label,
local len = id:len(); -- get the length of the lccn
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode,
 
access=access});
if 8 == len then
if id:match("[^%d]") then -- if LCCN has anything but digits (nil if only digits)
if 19 ~= id:len() then
err_cat = ' ' .. set_error( 'bad_lccn' ); -- set an error message
err_type = 'length';
end
else
elseif 9 == len then -- LCCN should be adddddddd
year = id:match ("^(%d%d%d%d)[%a][%a&%.][%a&%.%d][%a&%.%d][%a%d%.]+[%a%.]$") --
if nil == id:match("%l%d%d%d%d%d%d%d%d") then -- does it match our pattern?
if not year then -- if nil then no pattern match
err_cat = ' ' .. set_error( 'bad_lccn' ); -- set an error message
err_type = 'value'; -- so value error
end
else
elseif 10 == len then -- LCCN should be aadddddddd or dddddddddd
local next_year = tonumber(os.date ('%Y'))+1; -- get the current year as a number and add one for next year
if id:match("[^%d]") then -- if LCCN has anything but digits (nil if only digits) ...
year = tonumber (year); -- convert year portion of bibcode to a number
if nil == id:match("^%l%l%d%d%d%d%d%d%d%d") then -- ... see if it matches our pattern
if (1000 > year) or (year > next_year) then
err_cat = ' ' .. set_error( 'bad_lccn' ); -- no match, set an error message
err_type = 'year'; -- year out of bounds
end
if id:find('&%.') then
err_type = 'journal'; -- journal abbreviation must not have '&.' (if it does its missing a letter)
end
end
end
end
elseif 11 == len then -- LCCN should be aaadddddddd or adddddddddd
if not (id:match("^%l%l%l%d%d%d%d%d%d%d%d") or id:match("^%l%d%d%d%d%d%d%d%d%d%d")) then -- see if it matches one of our patterns
err_cat = ' ' .. set_error( 'bad_lccn' ); -- no match, set an error message
end
elseif 12 == len then -- LCCN should be aadddddddddd
if not id:match("^%l%l%d%d%d%d%d%d%d%d%d%d") then -- see if it matches our pattern
err_cat = ' ' .. set_error( 'bad_lccn' ); -- no match, set an error message
end
else
err_cat = ' ' .. set_error( 'bad_lccn' ); -- wrong length, set an error message
end
end


if not is_set (err_cat) and nil ~= lccn:find ('%s') then
if is_set (err_type) then -- if there was an error detected
err_cat = ' ' .. set_error( 'bad_lccn' ); -- lccn contains a space, set an error message
text = text .. ' ' .. set_error( 'bad_bibcode', {err_type});
end
end
 
return text;
return external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=lccn,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
end




--[[--------------------------< P M I D >----------------------------------------------------------------------
--[[--------------------------< B I O R X I V >-----------------------------------------------------------------


Format PMID and do simple error checking.  PMIDs are sequential numbers beginning at 1 and counting up. This
Format bioRxiv id and do simple error checking.  BiorXiv ids are exactly 6 digits.
code checks the PMID to see that it contains only digits and is less than test_limit; the value in local variable
The bioRxiv id is the number following the last slash in the bioRxiv-issued DOI:
test_limit will need to be updated periodically as more PMIDs are issued.
https://doi.org/10.1101/078733 -> 078733


]]
]]


local function pmid(id)
local function biorxiv(id)
local test_limit = 30000000; -- update this value as PMIDs approach
local handler = cfg.id_handlers['BIORXIV'];
local handler = cfg.id_handlers['PMID'];
local err_cat = ''; -- presume that bioRxiv id is valid
local err_cat = ''; -- presume that PMID is valid
if id:match("[^%d]") then -- if PMID has anything but digits
if nil == id:match("^%d%d%d%d%d%d$") then -- if bioRxiv id has anything but six digits
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
err_cat = ' ' .. set_error( 'bad_biorxiv'); -- set an error message
else -- PMID is only digits
local id_num = tonumber(id); -- convert id to a number for range testing
if 1 > id_num or test_limit < id_num then -- if PMID is outside test limit boundaries
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
end
end
end
return external_link_id({link = handler.link, label = handler.label,
return external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
prefix=handler.prefix,id=id,separator=handler.separator,
encode=handler.encode, access=handler.access}) .. err_cat;
end
end




--[[--------------------------< I S _ E M B A R G O E D >------------------------------------------------------
--[[--------------------------< C I T E S E E R X >------------------------------------------------------------


Determines if a PMC identifier's online version is embargoed. Compares the date in |embargo= against today's date. If embargo date is
CiteSeerX use their own notion of "doi" (not to be confused with the identifiers resolved via doi.org).
in the future, returns the content of |embargo=; otherwise, returns and empty string because the embargo has expired or because
|embargo= was not set in this cite.


The description of the structure of this identifier can be found at Help_talk:Citation_Style_1/Archive_26#CiteSeerX_id_structure
]]
]]


local function is_embargoed (embargo)
local function citeseerx (id)
if is_set (embargo) then
local handler = cfg.id_handlers['CITESEERX'];
local lang = mw.getContentLanguage();
local matched;
local good1, embargo_date, good2, todays_date;
good1, embargo_date = pcall( lang.formatDate, lang, 'U', embargo );
good2, todays_date = pcall( lang.formatDate, lang, 'U' );
if good1 and good2 then -- if embargo date and today's date are good dates
local text = external_link_id({link=handler.link, label=handler.label,
if tonumber( embargo_date ) >= tonumber( todays_date ) then -- is embargo date is in the future?
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode,
return embargo; -- still embargoed
access=handler.access});
else
add_maint_cat ('embargo')
return ''; -- unset because embargo has expired
end
end
end
return ''; -- |embargo= not set return empty string
end
 
 
--[[--------------------------< P M C >------------------------------------------------------------------------
 
Format a PMC, do simple error checking, and check for embargoed articles.
 
The embargo parameter takes a date for a value. If the embargo date is in the future the PMC identifier will not
be linked to the article. If the embargo date is today or in the past, or if it is empty or omitted, then the
PMC identifier is linked to the article through the link at cfg.id_handlers['PMC'].prefix.
 
PMC embargo date testing is done in function is_embargoed () which is called earlier because when the citation
has |pmc=<value> but does not have a |url= then |title= is linked with the PMC link. Function is_embargoed ()
returns the embargo date if the PMC article is still embargoed, otherwise it returns an empty string.
 
PMCs are sequential numbers beginning at 1 and counting up.  This code checks the PMC to see that it contains only digits and is less
than test_limit; the value in local variable test_limit will need to be updated periodically as more PMCs are issued.
 
]]
 
local function pmc(id, embargo)
local test_limit = 6000000; -- update this value as PMCs approach
local handler = cfg.id_handlers['PMC'];
local err_cat =  ''; -- presume that PMC is valid
local id_num;
local text;
id_num = id:match ('^[Pp][Mm][Cc](%d+)$');                                  -- identifier with pmc prefix
matched = id:match ("^10%.1%.1%.[1-9]%d?%d?%d?%.[1-9]%d?%d?%d?$");
 
if not matched then
if is_set (id_num) then
text = text .. ' ' .. set_error( 'bad_citeseerx' );
add_maint_cat ('pmc_format');
else         -- plain number without pmc prefix
id_num = id:match ('^%d+$'); -- if here id is all digits
end
 
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 1 > id_num or test_limit < id_num then -- if PMC is outside test limit boundaries
err_cat = ' ' .. set_error( 'bad_pmc' ); -- set an error message
else
id = tostring (id_num); -- make sure id is a string
end
else -- when id format incorrect
err_cat = ' ' .. set_error( 'bad_pmc' ); -- set an error message
end
if is_set (embargo) then -- is PMC is still embargoed?
text="[[" .. handler.link .. "|" .. handler.label .. "]]" .. handler.separator .. id .. err_cat; -- still embargoed so no external link
else
text = external_link_id({link = handler.link, label = handler.label, -- no embargo date 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;
end
end
return text;
return text;
Line 575: Line 409:
local text;
local text;
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
text = "[[" .. handler.link .. "|" .. handler.label .. "]]:" .. id;
if is_set(inactive_year) then
if is_set(inactive_year) then
table.insert( z.error_categories, "Pages with DOIs inactive since " .. inactive_year );
table.insert( z.error_categories, "Pages with DOIs inactive since " .. 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 year
end
end
inactive = " (" .. cfg.messages['inactive'] .. " " .. inactive .. ")"  
inactive = " (" .. cfg.messages['inactive'] .. " " .. inactive .. ")"  
else
text = external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=access})
inactive = ""
end
end
text = external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode, access=access}) .. (inactive or '')


if nil == id:match("^10%.[^%s–]-/[^%s–]-[^%.,]$") then -- doi must begin with '10.', must contain a fwd slash, must not contain spaces or endashes, and must not end with period or comma
if nil == id:match("^10%.[^%s–]-/[^%s–]-[^%.,]$") then -- doi must begin with '10.', must contain a fwd slash, must not contain spaces or endashes, and must not end with period or comma
cat = ' ' .. set_error( 'bad_doi' );
cat = ' ' .. set_error( 'bad_doi' );
end
end
return text .. inactive .. cat  
 
return text .. cat  
end
end


Line 626: Line 458:




--[[--------------------------< O P E N L I B R A R Y >--------------------------------------------------------
--[[--------------------------< I S B N >----------------------------------------------------------------------
 
Determines whether an ISBN string is valid
 
]]
 
local function isbn( isbn_str )
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
end
isbn_str = isbn_str:gsub( "-", "" ):gsub( " ", "" ); -- remove hyphens and spaces
local len = isbn_str:len();
if len ~= 10 and len ~= 13 then
return false, 'length'; -- fail if incorrect length
end
 
if len == 10 then
if isbn_str:match( "^%d*X?$" ) == nil then -- fail if isbn_str has 'X' anywhere but last position
return false, 'invalid form';
end
return is_valid_isxn(isbn_str, 10), 'checksum';
else
if isbn_str:match( "^%d+$" ) == nil then
return false, 'invalid character'; -- fail if isbn13 is not all digits
end
if isbn_str:match( "^97[89]%d*$" ) == nil then
return false, 'invalid prefix'; -- fail when isbn13 does not begin with 978 or 979
end
return is_valid_isxn_13 (isbn_str), 'checksum';
end
end
 
 
--[[--------------------------< I S M N >----------------------------------------------------------------------


Formats an OpenLibrary link, and checks for associated errors.
Determines whether an ISMN string is valid.  Similar to isbn-13, ismn is 13 digits begining 979-0-... and uses the
same check digit calculations.  See http://www.ismn-international.org/download/Web_ISMN_Users_Manual_2008-6.pdf
section 2, pages 9–12.


]]
]]


local function openlibrary(id, access)
local function ismn (id)
local code = id:match("^%d+([AMW])$"); -- only digits followed by 'A', 'M', or 'W'
local handler = cfg.id_handlers['ISMN'];
local handler = cfg.id_handlers['OL'];
local text;
local valid_ismn = true;
local id_copy;
 
id_copy = id; -- save a copy because this testing is destructive
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and endashes from the ismn


if ( code == "A" ) then
if 13 ~= id:len() or id:match( "^9790%d*$" ) == nil then -- ismn must be 13 digits and begin 9790
return external_link_id({link=handler.link, label=handler.label,
valid_ismn = false;
prefix=handler.prefix .. 'authors/OL',
id=id, separator=handler.separator, encode = handler.encode,
access = access})
elseif ( code == "M" ) then
return external_link_id({link=handler.link, label=handler.label,
prefix=handler.prefix .. 'books/OL',
id=id, separator=handler.separator, encode = handler.encode,
access = access})
elseif ( code == "W" ) then
return external_link_id({link=handler.link, label=handler.label,
prefix=handler.prefix .. 'works/OL',
id=id, separator=handler.separator, encode = handler.encode,
access = access})
else
else
return external_link_id({link=handler.link, label=handler.label,
valid_ismn=is_valid_isxn_13 (id); -- validate ismn
prefix=handler.prefix .. 'OL',
id=id, separator=handler.separator, encode = handler.encode,
access = access}) .. ' ' .. set_error( 'bad_ol' );
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
-- prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
text = table.concat (
{
make_wikilink (handler.link, handler.label),
handler.separator,
id_copy
}); -- because no place to link to yet
if false == valid_ismn then
text = text .. ' ' .. set_error( 'bad_ismn' ) -- add an error message if the ismn is invalid
end
return text;
end
end




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


Validate and format a usenet message id.  Simple error checking, looks for 'id-left@id-right' not enclosed in
Validate and format an issn.  This code fixes the case where an editor has included an ISSN in the citation but
'<' and/or '>' angle brackets.
has separated the two groups of four digits with a space.  When that condition occurred, the resulting link looked
like this:
 
|issn=0819 4327 gives: [http://www.worldcat.org/issn/0819 4327 0819 4327] -- can't have spaces in an external link
This code now prevents that by inserting a hyphen at the issn midpoint.  It also validates the issn for length
and makes sure that the checkdigit agrees with the calculated value.  Incorrect length (8 digits), characters
other than 0-9 and X, or checkdigit / calculated value mismatch will all cause a check issn error message.  The
issn is always displayed with a hyphen, even if the issn was given as a single group of 8 digits.


]]
]]


local function message_id (id)
local function issn(id, e)
local handler = cfg.id_handlers['USENETID'];
local issn_copy = id; -- save a copy of unadulterated issn; use this version for display if issn does not validate
local handler;
local text;
local valid_issn = true;
if e then
handler = cfg.id_handlers['EISSN'];
else
handler = cfg.id_handlers['ISSN'];
end
 
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and endashes from the issn
 
if 8 ~= id:len() or nil == id:match( "^%d*X?$" ) then -- validate the issn: 8 digits long, containing only 0-9 or X in the last position
valid_issn=false; -- wrong length or improper character
else
valid_issn=is_valid_isxn(id, 8); -- validate issn
end


local text = external_link_id({link = handler.link, label = handler.label,
if true == valid_issn then
id = string.sub( id, 1, 4 ) .. "-" .. string.sub( id, 5 ); -- if valid, display correctly formatted version
else
id = issn_copy; -- if not valid, use the show the invalid issn with error message
end
text = external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
   
   
if not id:match('^.+@.+$') or not id:match('^[^<].*[^>]$')then -- doesn't have '@' or has one or first or last character is '< or '>'
if false == valid_issn then
text = text .. ' ' .. set_error( 'bad_message_id' ) -- add an error message if the message id is invalid
text = text .. ' ' .. set_error( 'bad_issn', e and 'e' or '' ) -- add an error message if the issn is invalid
end  
end  
return text
return text
end
--[[--------------------------< J F M >-----------------------------------------------------------------------
A numerical identifier in the form nn.nnnn.nn
]]
local function jfm (id)
local handler = cfg.id_handlers['JFM'];
local id_num;
local err_cat = '';
id_num = id:match ('^[Jj][Ff][Mm](.*)$'); -- identifier with jfm prefix; extract identifier
if is_set (id_num) then
add_maint_cat ('jfm_format');
else -- plain number without mr prefix
id_num = id; -- if here id does not have prefix
end
if id_num and id_num:match('^%d%d%.%d%d%d%d%.%d%d$') then
id = id_num; -- jfm matches pattern
else
err_cat = ' ' .. set_error( 'bad_jfm' ); -- set an error message
end
return external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
--[[--------------------------< L C C N >----------------------------------------------------------------------
Format LCCN link and do simple error checking.  LCCN is a character string 8-12 characters long. The length of
the LCCN dictates the character type of the first 1-3 characters; the rightmost eight are always digits.
http://info-uri.info/registry/OAIHandler?verb=GetRecord&metadataPrefix=reg&identifier=info:lccn/
length = 8 then all digits
length = 9 then lccn[1] is lower case alpha
length = 10 then lccn[1] and lccn[2] are both lower case alpha or both digits
length = 11 then lccn[1] is lower case alpha, lccn[2] and lccn[3] are both lower case alpha or both digits
length = 12 then lccn[1] and lccn[2] are both lower case alpha
]]
local function lccn(lccn)
local handler = cfg.id_handlers['LCCN'];
local err_cat = ''; -- presume that LCCN is valid
local id = lccn; -- local copy of the lccn
id = normalize_lccn (id); -- get canonical form (no whitespace, hyphens, forward slashes)
local len = id:len(); -- get the length of the lccn
if 8 == len then
if id:match("[^%d]") then -- if LCCN has anything but digits (nil if only digits)
err_cat = ' ' .. set_error( 'bad_lccn' ); -- set an error message
end
elseif 9 == len then -- LCCN should be adddddddd
if nil == id:match("%l%d%d%d%d%d%d%d%d") then -- does it match our pattern?
err_cat = ' ' .. set_error( 'bad_lccn' ); -- set an error message
end
elseif 10 == len then -- LCCN should be aadddddddd or dddddddddd
if id:match("[^%d]") then -- if LCCN has anything but digits (nil if only digits) ...
if nil == id:match("^%l%l%d%d%d%d%d%d%d%d") then -- ... see if it matches our pattern
err_cat = ' ' .. set_error( 'bad_lccn' ); -- no match, set an error message
end
end
elseif 11 == len then -- LCCN should be aaadddddddd or adddddddddd
if not (id:match("^%l%l%l%d%d%d%d%d%d%d%d") or id:match("^%l%d%d%d%d%d%d%d%d%d%d")) then -- see if it matches one of our patterns
err_cat = ' ' .. set_error( 'bad_lccn' ); -- no match, set an error message
end
elseif 12 == len then -- LCCN should be aadddddddddd
if not id:match("^%l%l%d%d%d%d%d%d%d%d%d%d") then -- see if it matches our pattern
err_cat = ' ' .. set_error( 'bad_lccn' ); -- no match, set an error message
end
else
err_cat = ' ' .. set_error( 'bad_lccn' ); -- wrong length, set an error message
end
if not is_set (err_cat) and nil ~= lccn:find ('%s') then
err_cat = ' ' .. set_error( 'bad_lccn' ); -- lccn contains a space, set an error message
end
return external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=lccn,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
--[[--------------------------< M R >--------------------------------------------------------------------------
A seven digit number; if not seven digits, zero-fill leading digits to make seven digits.
]]
local function mr (id)
local handler = cfg.id_handlers['MR'];
local id_num;
local id_len;
local err_cat = '';
id_num = id:match ('^[Mm][Rr](%d+)$'); -- identifier with mr prefix
if is_set (id_num) then
add_maint_cat ('mr_format');
else -- plain number without mr prefix
id_num = id:match ('^%d+$'); -- if here id is all digits
end
id_len = id_num and id_num:len() or 0;
if (7 >= id_len) and (0 ~= id_len) then
id = string.rep ('0', 7-id_len ) .. id_num; -- zero-fill leading digits
else
err_cat = ' ' .. set_error( 'bad_mr' ); -- set an error message
end
return external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
end


Line 723: Line 746:




--[[--------------------------< B I B C O D E >--------------------------------------------------------------------
--[[--------------------------< O P E N L I B R A R Y >--------------------------------------------------------
 
Formats an OpenLibrary link, and checks for associated errors.
 
]]
 
local function openlibrary(id, access)
local code;
local handler = cfg.id_handlers['OL'];
local ident;
ident, code = id:gsub('^OL', ''):match("^(%d+([AMW]))$"); -- optional OL prefix followed immediately by digits followed by 'A', 'M', or 'W'; remove OL prefix
 
if not is_set (ident) then -- if malformed return an error
return external_link_id({link=handler.link, label=handler.label,
prefix=handler.prefix .. 'OL',
id=id, separator=handler.separator, encode = handler.encode,
access = access}) .. ' ' .. set_error( 'bad_ol' );
end
id = ident; -- use ident without the optional OL prefix (it has been removed)
if ( code == "A" ) then
return external_link_id({link=handler.link, label=handler.label,
prefix=handler.prefix .. 'authors/OL',
id=id, separator=handler.separator, encode = handler.encode,
access = access})
end
if ( code == "M" ) then
return external_link_id({link=handler.link, label=handler.label,
prefix=handler.prefix .. 'books/OL',
id=id, separator=handler.separator, encode = handler.encode,
access = access})
end
 
if ( code == "W" ) then
return external_link_id({link=handler.link, label=handler.label,
prefix=handler.prefix .. 'works/OL',
id=id, separator=handler.separator, encode = handler.encode,
access = access})
end
end
 
 
--[[--------------------------< P M C >------------------------------------------------------------------------
 
Format a PMC, do simple error checking, and check for embargoed articles.


Validates (sort of) and formats a bibcode id.
The embargo parameter takes a date for a value. If the embargo date is in the future the PMC identifier will not
be linked to the article.  If the embargo date is today or in the past, or if it is empty or omitted, then the
PMC identifier is linked to the article through the link at cfg.id_handlers['PMC'].prefix.


Format for bibcodes is specified here: http://adsabs.harvard.edu/abs_doc/help_pages/data.html#bibcodes
PMC embargo date testing is done in function is_embargoed () which is called earlier because when the citation
has |pmc=<value> but does not have a |url= then |title= is linked with the PMC link. Function is_embargoed ()
returns the embargo date if the PMC article is still embargoed, otherwise it returns an empty string.


But, this: 2015arXiv151206696F is apparently valid so apparently, the only things that really matter are length, 19 characters
PMCs are sequential numbers beginning at 1 and counting up.  This code checks the PMC to see that it contains only digits and is less
and first four digits must be a year.  This function makes these tests:
than test_limit; the value in local variable test_limit will need to be updated periodically as more PMCs are issued.
length must be 19 characters
characters in position
1–4 must be digits and must represent a year in the range of 1000 – next year
5 must be a letter
6 must be letter, 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
19 must be a letter or dot


]]
]]


local function bibcode (id, access)
local function pmc(id, embargo)
local handler = cfg.id_handlers['BIBCODE'];
local test_limit = 6000000; -- update this value as PMCs approach
local err_type;
local handler = cfg.id_handlers['PMC'];
local year;
local err_cat = ''; -- presume that PMC is valid
local id_num;
local text;
id_num = id:match ('^[Pp][Mm][Cc](%d+)$'); -- identifier with pmc prefix
 
if is_set (id_num) then
add_maint_cat ('pmc_format');
else -- plain number without pmc prefix
id_num = id:match ('^%d+$'); -- if here id is all digits
end


local text = external_link_id({link=handler.link, label=handler.label,
if is_set (id_num) then -- id_num has a value so test it
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode,
id_num = tonumber(id_num); -- convert id_num to a number for range testing
access=access});
if 1 > id_num or test_limit < id_num then -- if PMC is outside test limit boundaries
err_cat = ' ' .. set_error( 'bad_pmc' ); -- set an error message
if 19 ~= id:len() then
err_type = 'length';
else
year = id:match ("^(%d%d%d%d)[%a][%a&%.][%a&%.%d][%a&%.%d][%a%d%.]+[%a%.]$") --  
if not year then -- if nil then no pattern match
err_type = '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
id = tostring (id_num); -- make sure id is a string
year = tonumber (year); -- convert year portion of bibcode to a number
if (1000 > year) or (year > next_year) then
err_type = 'year'; -- year out of bounds
end
if id:find('&%.') then
err_type = 'journal'; -- journal abbreviation must not have '&.' (if it does its missing a letter)
end
end
end
else -- when id format incorrect
err_cat = ' ' .. set_error( 'bad_pmc' ); -- set an error message
end
end
 
if is_set (err_type) then -- if there was an error detected
if is_set (embargo) then -- is PMC is still embargoed?
text = text .. ' ' .. set_error( 'bad_bibcode', {err_type});
text = table.concat ( -- still embargoed so no external link
{
make_wikilink (handler.link, handler.label),
handler.separator,
id,
err_cat
});
else
text = external_link_id({link = handler.link, label = handler.label, -- 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;
end
end
return text;
return text;
Line 776: Line 850:




--[[--------------------------< C I T E S E E R X >------------------------------------------------------------
--[[--------------------------< P M I D >----------------------------------------------------------------------


CiteSeerX use their own notion of "doi" (not to be confused with the identifiers resolved via doi.org).
Format PMID and do simple error checking.  PMIDs are sequential numbers beginning at 1 and counting up.  This
code checks the PMID to see that it contains only digits and is less than test_limit; the value in local variable
test_limit will need to be updated periodically as more PMIDs are issued.


The description of the structure of this identifier can be found at Help_talk:Citation_Style_1/Archive_26#CiteSeerX_id_structure
]]
]]


local function citeseerx (id)
local function pmid(id)
local handler = cfg.id_handlers['CITESEERX'];
local test_limit = 32000000; -- update this value as PMIDs approach
local matched;
local handler = cfg.id_handlers['PMID'];
local err_cat = ''; -- presume that PMID is valid
local text = external_link_id({link=handler.link, label=handler.label,
if id:match("[^%d]") then -- if PMID has anything but digits
prefix=handler.prefix, id=id, separator=handler.separator, encode=handler.encode,
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
access=handler.access});
else -- PMID is only digits
local id_num = tonumber(id); -- convert id to a number for range testing
if 1 > id_num or test_limit < id_num then -- if PMID is outside test limit boundaries
err_cat = ' ' .. set_error( 'bad_pmid' ); -- set an error message
end
end
matched = id:match ("^10%.1%.1%.[1-9]%d?%d?%d?%.[1-9]%d?%d?%d?$");
return external_link_id({link = handler.link, label = handler.label,
if not matched then
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
text = text .. ' ' .. set_error( 'bad_citeseerx' );
end
return text;
end
end


Line 812: Line 890:
local test_limit = 3500000; -- update this value as SSRNs approach
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
local id_num;
local id_num;
local text;
local text;
Line 833: Line 911:
end
end


--[[--------------------------< U S E N E T _ I D >------------------------------------------------------------
Validate and format a usenet message id.  Simple error checking, looks for 'id-left@id-right' not enclosed in
'<' and/or '>' angle brackets.
]]
local function usenet_id (id)
local handler = cfg.id_handlers['USENETID'];
local text = external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode})
if not id:match('^.+@.+$') or not id:match('^[^<].*[^>]$')then -- doesn't have '@' or has one or first or last character is '< or '>'
text = text .. ' ' .. set_error( 'bad_usenet_id' ) -- add an error message if the message id is invalid
end
return text
end
--[[--------------------------< Z B L >-----------------------------------------------------------------------
A numerical identifier in the form nnnn.nnnnn - leading zeros in the first quartet optional
]]
local function zbl (id)
local handler = cfg.id_handlers['ZBL'];
local id_num;
local err_cat = '';
id_num = id:match ('^[Zz][Bb][Ll](.*)$'); -- identifier with zbl prefix; extract identifier
if is_set (id_num) then
add_maint_cat ('zbl_format');
else -- plain number without zbl prefix
id_num = id; -- if here id does not have prefix
end
if id_num:match('^%d?%d?%d?%d%.%d%d%d%d%d$') then
id = id_num; -- id matches pattern
else
err_cat = ' ' .. set_error( 'bad_zbl' ); -- set an error message
end
return external_link_id({link = handler.link, label = handler.label,
prefix=handler.prefix,id=id,separator=handler.separator, encode=handler.encode}) .. err_cat;
end
--============================<< I N T E R F A C E  F U N C T I O N S >>==========================================


--[[--------------------------< B U I L D _ I D _ L I S T >--------------------------------------------------------
--[[--------------------------< B U I L D _ I D _ L I S T >--------------------------------------------------------
Line 850: Line 981:
for k, v in pairs( id_list ) do -- k is uc identifier name as index to cfg.id_handlers; e.g. cfg.id_handlers['ISBN'], v is a table
for k, v in pairs( id_list ) do -- k is uc identifier name as index to cfg.id_handlers; e.g. cfg.id_handlers['ISBN'], v is a table
-- fallback to read-only cfg
-- fallback to read-only cfg
handler = setmetatable( { ['id'] = v, ['access'] = options.IdAccessLevels[k] }, fallback(k) );
handler = setmetatable( { ['id'] = v, ['access'] = options.IdAccessLevels[k] }, fallback(k) );
Line 860: Line 990:
elseif handler.mode ~= 'manual' then
elseif handler.mode ~= 'manual' then
error( cfg.messages['unknown_ID_mode'] );
error( cfg.messages['unknown_ID_mode'] );
elseif k == 'ARXIV' then
table.insert( new_list, {handler.label, arxiv( v, options.Class ) } );
elseif k == 'ASIN' then
table.insert( new_list, {handler.label, asin( v, options.ASINTLD ) } );
elseif k == 'BIBCODE' then
elseif k == 'BIBCODE' then
table.insert( new_list, {handler.label, bibcode( v, handler.access ) } );
table.insert( new_list, {handler.label, bibcode( v, handler.access ) } );
Line 868: Line 1,002:
elseif k == 'DOI' then
elseif k == 'DOI' then
table.insert( new_list, {handler.label, doi( v, options.DoiBroken, handler.access ) } );
table.insert( new_list, {handler.label, doi( v, options.DoiBroken, handler.access ) } );
elseif k == 'EISSN' then
table.insert( new_list, {handler.label, issn( v, true ) } ); -- true distinguishes eissn from issn
elseif k == 'HDL' then
elseif k == 'HDL' then
table.insert( new_list, {handler.label, hdl( v, handler.access ) } );
table.insert( new_list, {handler.label, hdl( v, handler.access ) } );
elseif k == 'ARXIV' then
table.insert( new_list, {handler.label, arxiv( v, options.Class ) } );
elseif k == 'ASIN' then
table.insert( new_list, {handler.label, amazon( v, options.ASINTLD ) } );
elseif k == 'LCCN' then
table.insert( new_list, {handler.label, lccn( v ) } );
elseif k == 'OL' or k == 'OLA' then
table.insert( new_list, {handler.label, openlibrary( v, handler.access ) } );
elseif k == 'PMC' then
table.insert( new_list, {handler.label, pmc( v, options.Embargo ) } );
elseif k == 'PMID' then
table.insert( new_list, {handler.label, pmid( v ) } );
elseif k == 'OCLC' then
table.insert( new_list, {handler.label, oclc( v ) } );
elseif k == 'SSRN' then
table.insert( new_list, {handler.label, ssrn( v ) } );
elseif k == 'ISMN' then
table.insert( new_list, {handler.label, ismn( v ) } );
elseif k == 'ISSN' then
table.insert( new_list, {handler.label, issn( v ) } );
elseif k == 'EISSN' then
table.insert( new_list, {handler.label, issn( v, true ) } ); -- true distinguishes eissn from issn
elseif k == 'ISBN' then
elseif k == 'ISBN' then
local ISBN = internal_link_id( handler );
local ISBN = internal_link_id( handler );
local check;
local check;
local err_type = '';
local err_type = '';
check, err_type = check_isbn( v );
check, err_type = isbn( v );
if not check then
if not check then
if is_set(options.IgnoreISBN) then -- ISBN is invalid; if |ignore-isbn-error= set
if is_set(options.IgnoreISBN) then -- ISBN is invalid; if |ignore-isbn-error= set
Line 904: Line 1,018:
end
end
elseif is_set(options.IgnoreISBN) then -- ISBN is OK; if |ignore-isbn-error= set
elseif is_set(options.IgnoreISBN) then -- ISBN is OK; if |ignore-isbn-error= set
add_maint_cat ('ignore_isbn_err'); -- because |ignore-isbn-error= unnecessary
add_maint_cat ('ignore_isbn_err'); -- because |ignore-isbn-error= unnecessary
end
end
table.insert( new_list, {handler.label, ISBN } );
table.insert( new_list, {handler.label, ISBN } );
elseif k == 'ISMN' then
table.insert( new_list, {handler.label, ismn( v ) } );
elseif k == 'ISSN' then
table.insert( new_list, {handler.label, issn( v ) } );
elseif k == 'JFM' then
table.insert( new_list, {handler.label, jfm( v ) } );
elseif k == 'LCCN' then
table.insert( new_list, {handler.label, lccn( v ) } );
elseif k == 'MR' then
table.insert( new_list, {handler.label, mr( v ) } );
elseif k == 'OCLC' then
table.insert( new_list, {handler.label, oclc( v ) } );
elseif k == 'OL' or k == 'OLA' then
table.insert( new_list, {handler.label, openlibrary( v, handler.access ) } );
elseif k == 'PMC' then
table.insert( new_list, {handler.label, pmc( v, options.Embargo ) } );
elseif k == 'PMID' then
table.insert( new_list, {handler.label, pmid( v ) } );
elseif k == 'SSRN' then
table.insert( new_list, {handler.label, ssrn( v ) } );
elseif k == 'USENETID' then
elseif k == 'USENETID' then
table.insert( new_list, {handler.label, message_id( v ) } );
table.insert( new_list, {handler.label, usenet_id( v ) } );
elseif k == 'ZBL' then
table.insert( new_list, {handler.label, zbl( v ) } );
else
else
error( cfg.messages['unknown_manual_ID'] );
error( cfg.messages['unknown_manual_ID'] );
Line 915: Line 1,051:
local function comp( a, b ) -- used in following table.sort()
local function comp( a, b ) -- used in following table.sort()
return a[1] < b[1];
return a[1]:lower() < b[1]:lower();
end
end
Line 994: Line 1,130:
add_maint_cat = utilities_page_ptr.add_maint_cat;
add_maint_cat = utilities_page_ptr.add_maint_cat;
substitute = utilities_page_ptr.substitute;
substitute = utilities_page_ptr.substitute;
make_wikilink = utilities_page_ptr.make_wikilink;


z = utilities_page_ptr.z; -- table of tables in Module:Citation/CS1/Utilities
z = utilities_page_ptr.z; -- table of tables in Module:Citation/CS1/Utilities
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