%    Copyright (C) 1994 Aladdin Enterprises.  All rights reserved.
% 
% This program is free software; you can redistribute it and/or modify it
% under the terms of the GNU General Public License as published by the
% Free Software Foundation; either version 2 of the License, or (at your
% option) any later version.
%
% This program is distributed in the hope that it will be useful, but
% WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
% Public License for more details.
%
% You should have received a copy of the GNU General Public License along
% with this program; if not, write to the Free Software Foundation, Inc.,
% 59 Temple Place, Suite 330, Boston, MA, 02111-1307.

% $Id: traceimg.ps,v 1.2.6.2.2.1 2003/04/12 14:02:39 giles Exp $
% 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