Mô đun:Check isxn
Giao diện
Mô đun này được dùng để kiểm tra tính hợp lệ của Số Sách Chuẩn hóa Quốc tế, Số Âm nhạc Chuẩn hóa Quốc tế, và Số Sê-ri Chuẩn hóa Quốc tế.
Cách dùng
[sửa]Với ISBN,
{{#invoke:check isxn|check_isbn|978-0-12-345678-9|error=<span class="error">ISBN sai</span>}}
Với ISMNs,
{{#invoke:check isxn|check_ismn|979-0-1234567-8-9|error=<span class="error">ISMN sai</span>}}
Với ISSNs,
{{#invoke:check isxn|check_issn|1234-5678|error=<span class="error">ISSN sai</span>}}
Ví dụ
[sửa]{{#invoke:check isxn|check_isbn|978-3-16-148410-0|error=<span class="error">ISBN sai</span>}}
→{{#invoke:check isxn|check_isbn|978-0-12-345678-9|error=<span class="error">ISBN sai</span>}}
→ ISBN sai{{#invoke:check isxn|check_isbn|ISBN 978-3-16-148410-0|error=<span class="error">ISBN sai</span>}}
→ ISBN sai{{#invoke:check isxn|check_ismn|979-0-9016791-7-7|error=<span class="error">ISMN sai</span>}}
→{{#invoke:check isxn|check_ismn|979-0-1234567-8-9|error=<span class="error">ISMN sai</span>}}
→ ISMN sai{{#invoke:check isxn|check_issn|1234-5679|error=<span class="error">ISSN sai</span>}}
→{{#invoke:check isxn|check_issn|1234-5678|error=<span class="error">ISSN sai</span>}}
→ ISSN sai
Bản mẫu/mô đun sử dụng bản mô đun này
[sửa]- {{ISBN}}
-- This template is a copy of the ISXN validation code from [[Module:Citation/CS1]]
-- which allows for validating ISBN, ISMN, and ISSN without invoking a citation template
local p = {}
--[[--------------------------< IS _ V A L I D _ I S X N >-----------------------------------------------------
ISBN-10 and ISSN validator code calculates checksum across all isbn/issn digits including the check digit. ISBN-13 is checked in check_isbn().
If the number is valid the result will be 0. Before calling this function, issbn/issn must be checked for length and stripped of dashes,
spaces and other non-isxn characters.
]]
local function is_valid_isxn (isxn_str, len)
local temp = 0;
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
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)
temp = temp + 10*( len - i ); -- it represents 10 decimal
else
temp = temp + tonumber( string.char(v) )*(len-i);
end
end
return temp % 11 == 0; -- returns true if calculation result is zero
end
--[[--------------------------< 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.
If the number is valid, the result will be 0. Before calling this function, isbn-13/ismn must be checked for length
and stripped of dashes, spaces and other non-isxn-13 characters.
]]
local function is_valid_isxn_13 (isxn_str)
local temp=0;
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
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
end
return temp % 10 == 0; -- sum modulo 10 is zero when isbn-13/ismn is correct
end
--[[--------------------------< C H E C K _ I S B N >------------------------------------------------------------
Determines whether an ISBN string is valid
]]
local function check_isbn( isbn_str, error_string )
if nil ~= isbn_str:match("[^%s-0-9X]") then -- 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_string;
end
if len == 10 then
if isbn_str:match( "^%d*X?$" ) == nil then
return error_string;
end
return is_valid_isxn(isbn_str, 10) and '' or error_string;
else
local temp = 0;
if isbn_str:match( "^97[89]%d*$" ) == nil then -- isbn13 begins with 978 or 979; ismn begins with 979
return error_string;
end
return is_valid_isxn_13 (isbn_str) and '' or error_string;
end
end
--[[--------------------------< C H E C K _ I S M N >------------------------------------------------------------
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 check_ismn (id, error_string)
local text;
local valid_ismn = true;
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and endashes from the ismn
if 13 ~= id:len() or id:match( "^9790%d*$" ) == nil then -- ismn must be 13 digits and begin 9790
valid_ismn = false;
else
valid_ismn=is_valid_isxn_13 (id); -- validate ismn
end
return valid_ismn and '' or error_string
end
--[[--------------------------< I S S N >----------------------------------------------------------------------
Validate and format an issn. This code fixes the case where an editor has included an ISSN in the citation but has separated the two groups of four
digits with a space. When that condition occurred, the resulting link looked like this:
|issn=0819 4327 gives: [http://www.worldcat.org/issn/0819 4327 0819 4327] -- can't have spaces in an external link
This code now prevents that by inserting a hyphen at the issn midpoint. It also validates the issn for length and makes sure that the checkdigit agrees
with the calculated value. Incorrect length (8 digits), characters other than 0-9 and X, or checkdigit / calculated value mismatch will all cause a check issn
error message.
]]
local function check_issn(id, error_string)
local issn_copy = id; -- save a copy of unadulterated issn; use this version for display if issn does not validate
local text;
local valid_issn = true;
if not id:match ('^%d%d%d%d%-%d%d%d[%dX]$') then
return error_string;
end
id=id:gsub( "[%s-–]", "" ); -- strip spaces, hyphens, and endashes from the issn
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
return valid_issn and '' or error_string
end
------------------------------< E N T R Y P O I N T S >--------------------------------------------------====
function p.check_isbn(frame)
return check_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_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
return p