gs1datamatrix.ps.src

% Barcode Writer in Pure PostScript
% https://bwipp.terryburton.co.uk
%
% Copyright (c) 2004-2024 Terry Burton
%
% $Id$
%
% Permission is hereby granted, free of charge, to any
% person obtaining a copy of this software and associated
% documentation files (the "Software"), to deal in the
% Software without restriction, including without
% limitation the rights to use, copy, modify, merge,
% publish, distribute, sublicense, and/or sell copies of
% the Software, and to permit persons to whom the Software
% is furnished to do so, subject to the following
% conditions:
%
% The above copyright notice and this permission notice
% shall be included in all copies or substantial portions
% of the Software.
%
% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
% KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
% THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
% PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
% THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
% DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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% CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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% --BEGIN ENCODER gs1datamatrix--
% --REQUIRES preamble loadctx unloadctx raiseerror processoptions parseinput gs1process renmatrix datamatrix--
% --DESC: GS1 Data Matrix
% --EXAM: (01)09521234543213(17)120508(10)ABCD1234(410)9501101020917
% --EXOP:
% --RNDR: renmatrix
/setpacking where {pop currentpacking true setpacking} if
10 dict
dup /raiseerror dup /uk.co.terryburton.bwipp findresource put
dup /processoptions dup /uk.co.terryburton.bwipp findresource put
dup /gs1process dup /uk.co.terryburton.bwipp findresource put
dup /renmatrix dup /uk.co.terryburton.bwipp findresource put
dup /datamatrix dup /uk.co.terryburton.bwipp findresource put
begin
/gs1datamatrix {

    20 dict begin            % Confine variables to local scope

    /ctx null def
    /dontdraw false def
    /parse false def
    /dontlint false def
    /lintreqs true def
    /gssep false def

    //processoptions exec /options exch def
    /barcode exch def

    barcode /ai //gs1process exec
    /fncs exch def
    /vals exch def
    /ais exch def

    % Create the datamatrix data
    /fnc1 -1 def
    /dmtx [ fnc1 ] def
    0 1 ais length 1 sub {
        /i exch def
        /ai ais i get def
        /val vals i get def
        dmtx length ai length add val length add array
        dup 0 dmtx putinterval
        dup dmtx length ai [ exch {} forall ] putinterval
        dup dmtx length ai length add val [ exch {} forall ] putinterval
        /dmtx exch def
        i ais length 1 sub ne fncs i get and {  % Append FNC1
            dmtx length 1 add array
            dup 0 dmtx putinterval
            dup dmtx length gssep {29} {fnc1} ifelse put
            /dmtx exch def
        } if
    } for

    % Compose input to datamatrix
    /barcode dmtx length 1 add 5 mul string def
    /i 0 def /j 0 def {
        i dmtx length eq {exit} if
        dmtx i get dup fnc1 eq {
            pop barcode j (^FNC1) putinterval
            /j j 4 add def
        } {
            barcode exch j exch put
        } ifelse
        /i i 1 add def
        /j j 1 add def
    } loop
    /barcode barcode 0 j getinterval def

    % Get the result of encoding with datamatrix
    options (parse) undef
    options (dontdraw) true put
    options (parsefnc) true put
    /args barcode options //datamatrix exec def

    args (opt) options put
    args

    dontdraw not //renmatrix if

    end

}
[/barcode] {null def} forall
bind def
/gs1datamatrix dup load /uk.co.terryburton.bwipp defineresource pop
end
/setpacking where {pop setpacking} if
% --END ENCODER gs1datamatrix--