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Module:Check isxn: Difference between revisions

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Module:Check isxn (view source)

Revision as of 16:53, 23 April 2019

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]]
 
local function check_isbn( isbn_str, error_string )
if nil ~= isbn_str:match("[^%s-0-9X]") then return false; end -- fail if isbn_str contains anything but digits, hyphens, or the uppercase X
return error_string;
end
isbn_str = isbn_str:gsub( "-", "" ):gsub( " ", "" ); -- remove hyphens and spaces
local len = isbn_str:len();
if len ~= 10 and len ~= 13 then
return 'error'error_string;
end
 
if len == 10 then
if isbn_str:match( "^%d*X?$" ) == nil then return false; end
return error_string;
return is_valid_isxn(isbn_str, 10) and '' or 'error';▼
end
▲ return is_valid_isxn(isbn_str, 10) and '' or 'error'error_string;
else
local temp = 0;
if isbn_str:match( "^97[89]%d*$" ) == nil then return false; end -- isbn13 begins with 978 or 979; ismn begins with 979
return error_string;
return is_valid_isxn_13 (isbn_str) and '' or 'error';▼
end
▲ return is_valid_isxn_13 (isbn_str) and '' or 'error'error_string;
end
end
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]]
 
local function check_ismn (id, error_string)
local handler = cfg.id_handlers['ISMN'];
local text;
local valid_ismn = true;
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end
 
return valid_ismn and '' or 'error'error_string
end
 
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]]
 
local function check_issn(id, error_string)
local issn_copy = id; -- save a copy of unadulterated issn; use this version for display if issn does not validate
local handler = cfg.id_handlers['ISSN'];
local text;
local valid_issn = true;
 
if not id:match ('^%d%d%d%d%-%d%d%d[%dX]$') then
return error_string;
end
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and endashes from the issn
 
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end
 
return valid_issn and '' or 'error'error_string
end
 
 
------------------------------< E N T R Y P O I N T S >--------------------------------------------------====
 
function p.check_isbn(frame)
return check_issncheck_isbn(frame.args[1] or frame:getParent().args[1], frame.args['error'] or frame:getParent().args['error'] or 'error')
end
 
function p.check_ismn(frame)
return check_issncheck_ismn(frame.args[1] or frame:getParent().args[1], frame.args['error'] or frame:getParent().args['error'] or 'error')
end
 
function p.check_issn(frame)
return check_issn(frame.args[1] or frame:getParent().args[1], frame.args['error'] or frame:getParent().args['error'] or 'error')
end
 
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