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Dir : ~/usr/share/ghostscript/10.02.1/lib/

View File Name : traceimg.ps

% Copyright (C) 2001-2023 Artifex Software, Inc.
% All Rights Reserved.
%
% This software is provided AS-IS with no warranty, either express or
% implied.
%
% This software is distributed under license and may not be copied,
% modified or distributed except as expressly authorized under the terms
% of the license contained in the file LICENSE in this distribution.
%
% Refer to licensing information at http://www.artifex.com or contact
% Artifex Software, Inc.,  39 Mesa Street, Suite 108A, San Francisco,
% CA 94129, USA, for further information.
%

% traceimg.ps
% Trace the data supplied to the 'image' operator.

% This code currently handles only the (Level 2) dictionary form of image,
% with a single data source and 8-bit pixels.

/traceimage			% <dict> traceimage -
 { currentcolorspace == (setcolorspace\n) print
   (<<) print
   dup { (\t) print exch ==only ( ) print == } forall
   (>>\n) print flush
   begin /i_left Width Height mul store /i_dict currentdict store end
    { i_left 0 le { exit } if
      i_dict /DataSource get exec
      dup type /filetype eq
       { i_buf 0 i_left 32 .min getinterval readstring pop
       } if
      dup (%stdout) (w) file exch writehexstring (\n) print flush
      i_left exch length sub /i_left exch def
    } loop
 } bind odef

/image /traceimage load def
/i_left 0 def
/i_dict null def
/i_buf 32 string def