leitcode.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
% CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
% CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
% IN THE SOFTWARE.

% --BEGIN ENCODER leitcode--
% --REQUIRES preamble loadctx unloadctx raiseerror processoptions renlinear interleaved2of5--
% --DESC: Deutsche Post Leitcode
% --EXAM: 21348075016401
% --EXOP: includetext
% --RNDR: renlinear
/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 /renlinear dup /uk.co.terryburton.bwipp findresource put
dup /interleaved2of5 dup /uk.co.terryburton.bwipp findresource put
begin
/leitcode {

    20 dict begin            % Confine variables to local scope

    /ctx null def
    /dontdraw false def
    /includetext false def    % Enable/disable text
    /textfont /Courier def
    /textsize 10.0 def
    /textxoffset 0.0 def
    /textyoffset -7.0 def
    /height 1.0 def

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

    % Validate the input
    barcode length 13 ne barcode length 14 ne and {
        /bwipp.leitcodeBadLength (Deutsche Post Leitcode must be 13 or 14 digits) //raiseerror exec
    } if
    barcode {
        dup 48 lt exch 57 gt or {
            /bwipp.leitcodeBadCharacter (Deutsche Post Leitcode must contain only digits) //raiseerror exec
        } if
    } forall

    % Calculate checksum and add to end of barcode
    /checksum 0 def
    0 1 12 {
        /i exch def
        /checksum checksum barcode i get 48 sub i 2 mod 0 eq {4 mul} {9 mul} ifelse add def
    } for
    /checksum 10 checksum 10 mod sub 10 mod def
    barcode length 14 eq {
        barcode 13 get checksum 48 add ne {
            /bwipp.leitcodeBadCheckDigit (Incorrect Deutsche Post Leitcode check digit provided) //raiseerror exec
        } if
    } if
    14 string
    dup 0 barcode putinterval
    dup 13 checksum 48 add put
    /barcode exch def

    % Compose the human readable text
    /text (     .   .   .    ) 18 string copy def
    text  0 barcode  0 5 getinterval putinterval
    text  6 barcode  5 3 getinterval putinterval
    text 10 barcode  8 3 getinterval putinterval
    text 14 barcode 11 2 getinterval putinterval
    text 17 barcode 13 1 getinterval putinterval

    % Get the result of encoding with interleaved2of5
    options (dontdraw) true put
    options (includecheck) false put
    /args barcode options //interleaved2of5 exec def

    args (txt) [ [text textxoffset textyoffset textfont textsize] ] put
    args (textxalign) (center) put
    args (opt) options put
    args

    dontdraw not //renlinear if

    end

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