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Module:Check bibcode
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require('strict'); --[[--------------------------< B I B C O D E >-------------------------------------------------------------------- Validates (sort of) a bibcode id. Format for bibcodes is specified here: http://adsabs.harvard.edu/abs_doc/help_pages/data.html#bibcodes But, this: 2015arXiv151206696F is apparently valid so apparently, the only things that really matter are length, 19 characters and first four digits must be a year. This function makes these tests: length must be 19 characters characters in position 1β4 must be digits and must represent a year in the range of 1000 β next year 5 must be a letter 6β8 must be letter, digit, ampersand, or dot (ampersand cannot directly precede a dot; &. ) 9β18 must be letter, digit, or dot 19 must be a letter or dot ]] local function bibcode (id) local err_type; local year; if 19 ~= id:len() then err_type = 'length'; else year = id:match ("^(%d%d%d%d)[%a][%w&%.][%w&%.][%w&%.][%w.]+[%a%.]$") -- if not year then -- if nil then no pattern match err_type = 'value'; -- so value error else 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 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 return err_type; end --[=[-------------------------< E N T R Y P O I N T S >------------------------------------------------------ This module is mostly a copy of the bibcode validation used in [[Module:Citation/CS1]] call this module with: {{#invoke:check bibcode|check_bibcode|{{{1|}}}}} where {{{1|}}} is the bibcode ]=] local function check_bibcode (frame) local err_type = bibcode (mw.text.trim (frame.args[1])); -- trim leading and trailing white space before evaluation if err_type then return '<span style="font-size:100%" class="error citation-comment">Check bibcode: ' .. err_type .. ' ([[Template:Bibcode#Error_messages|help]])</span>'; end return ''; -- return empty string when bibcode appears to be valid end --[[--------------------------< E X P O R T E D F U N C T I O N S >------------------------------------------ ]] return { check_bibcode = check_bibcode, }
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