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%D \module
%D [ file=m-barcodes,
%D version=2010.03.14,
%D title=\CONTEXT\ Extra Modules,
%D subtitle=Barcodes,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
%D You can best use m-zint instead of this one.
% \startTEXpage
% \startPSTRICKS
% \pspicture(-4mm,-1mm)(38mm,26mm)
% \psbarcode{9781860742712}{includetext guardwhitespace}{ean13}%
% \endpspicture
% \stopPSTRICKS
% \stopTEXpage
% 978-94-90688-01-1
%
% 978 = ean isbn identifier (979 also)
% 94 = country code
% 90688 = publisher code
% 01 = title 1
% 1 = checksum
\usemodule[pstricks]
\usePSTRICKSmodule[pst-barcode]
\definefont[barcodefont][file:ocrb10]
% \definefont[barcodefont][file:texgyreheros-regular]
\startluacode
moduledata.barcodes = { }
local function split(code)
local t = { string.byte(code,1,#code) }
if #t >= 12 then
local s = 0
for i=1,11,2 do
s = s + (t[i]-48)
end
for i=2,12,2 do
s = s + 3 * (t[i]-48)
end
local m = s % 10
local c = (m > 0 and (10 - m)) or 0
return t, s, m, c
end
end
function moduledata.barcodes.isbn_1(original)
local code = string.gsub(original,"%-","")
local t, s, m, c = split(code)
if t then
if #t == 13 then
local e = ((c == t[13] - 48) and "correct") or "wrong"
logs.report("isbn code","code=%s, sum=%s, checksum=%s, modulo=%s, status=%s",original,s,m,c,e)
else
logs.report("isbn code","code=%s, sum=%s, checksum=%s, modulo=%s",original,s,m,c)
code= code .. c
end
end
context(code)
end
function moduledata.barcodes.isbn_2(original)
local code = string.gsub(original,"%-","")
local t, s, m, c = split(code)
if t and #t == 12 then
original = original .. "-" .. c
end
context(original)
end
\stopluacode
\startsetups barcode:isbn
\scale
[width=5cm]
{
\vbox {
\hbox {
\hskip3.7mm
\scale[width=34mm]{\barcodefont ISBN \ctxlua{moduledata.barcodes.isbn_2("\getvariable{barcode}{code}")}}
}
\par
\normalexpanded { \noexpand \setPSTRICKS {
\noexpand \pspicture(-4mm,-1mm)(38mm,26mm)
\noexpand \psbarcode {
\ctxlua{moduledata.barcodes.isbn_1("\getvariable{barcode}{code}")}
} {
includetext guardwhitespace
} {
ean13
}
\noexpand \endpspicture
}
\noexpand \processPSTRICKS }
}
}
\stopsetups
\def\barcode[#1]%
{\bgroup
\setvariables[barcode][type=isbn,#1]%
\directsetup{barcode:\getvariable{barcode}{type}}%
\egroup}
% \usemodule[barcodes]
\doifnotmode{demo}{\endinput}
\starttext
\startTEXpage
\barcode[type=isbn,code=978-94-90688-01-1]
\stopTEXpage
\stoptext
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