Current File : //usr/share/ghostscript/lib/traceimg.ps
% Copyright (C) 2001-2019 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., 1305 Grant Avenue - Suite 200, Novato,
% CA 94945, U.S.A., +1(415)492-9861, 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