ref: 6da89d6266511cfbe6f308799e8232a7920a5cc3
dir: /sys/src/cmd/gs/lib/pdf2dsc.ps/
% Copyright (C) 1994, 1995, 1996, 1997, 1998 Aladdin Enterprises. 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.
%
% For more information about licensing, please refer to
% http://www.ghostscript.com/licensing/. For information on
% commercial licensing, go to http://www.artifex.com/licensing/ or
% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
% $Id: pdf2dsc.ps,v 1.7 2002/03/30 23:39:15 raph Exp $
% pdf2dsc.ps
% read pdf file and produce DSC "index" file.
%
% Input file is named PDFname
% Output file is named DSCname
%
% Run using:
% gs -dNODISPLAY -sPDFname=pdffilename -sDSCname=tempfilename pdf2dsc.ps
% Then display the PDF file with
% gs tempfilename
%
% Modified by Geoff Keating <[email protected]> 21/12/98:
% Add DocumentMedia, PageMedia comments
% Use inherited BoundingBox and Orientation
% Reformat, add new macro 'puts', generally clean up
% Modified by Johannes Plass <[email protected]> 1996-11-05:
% Adds BoundingBox and Orientation if available.
% Modified by rjl/lpd 9/19/96
% Updates for compatibility with modified pdf_*.ps code for handling
% page ranges (i.e., partial files) better.
% Modified by Geoff Keating <[email protected]> 7/3/96:
% include Title and CreationDate DSC comments (these are displayed by
% Ghostview);
% reduce the size of typical output files by a factor of about 3.
% Modified by L. Peter Deutsch 3/18/96:
% Removes unnecessary and error-prone code duplicated from pdf_main.ps
% Modified by L. Peter Deutsch for GS 3.33
% Originally by Russell Lang 1995-04-26
/PDFfile PDFname (r) file def
/DSCfile DSCname (w) file def
systemdict /.setsafe known { .setsafe } if
/puts { DSCfile exch writestring } bind def
/DSCstring 255 string def
/MediaTypes 10 dict def
% (str1) (str2) concatstr (str1str2)
/concatstr {
2 copy length exch length add string
dup dup 5 2 roll copy length
% stack: newstring newstring str2 str1-length
exch putinterval
} bind def
GS_PDF_ProcSet begin
pdfdict begin
PDFfile
pdfopen begin
/FirstPage where { pop } { /FirstPage 1 def } ifelse
/LastPage where { pop } { /LastPage pdfpagecount def } ifelse
% scan through for media sizes, keep them in the dictionary
FirstPage 1 LastPage {
pdfgetpage /MediaBox pget pop % MediaBox is a required attribute
aload pop
3 -1 roll sub 3 1 roll exch sub exch
2 array astore
aload 3 1 roll 10 string cvs exch 10 string cvs
(x) exch concatstr concatstr cvn
MediaTypes 3 1 roll exch put
} for
% write header and prolog
(%!PS-Adobe-3.0\n) puts
Trailer /Info knownoget
{
dup /Title knownoget
{
(%%Title: ) puts
DSCfile exch write==
}
if
/CreationDate knownoget
{
(%%CreationDate: ) puts
DSCfile exch write==
}
if
}
if
% This is really supposed to be sorted by frequency of usage...
(%%DocumentMedia: )
MediaTypes {
exch pop
1 index puts
(y) puts dup 1 get DSCstring cvs puts
(x) puts dup 0 get DSCstring cvs puts
( ) puts dup 0 get DSCstring cvs puts
( ) puts 1 get DSCstring cvs puts
( 70 white ()\n) puts
pop (%%+ )
} forall
pop
(%%Pages: ) puts
LastPage FirstPage sub 1 add DSCstring cvs puts
(\n%%EndComments\n) puts
(%%BeginProlog\n) puts
(/Page null def\n/Page# 0 def\n/PDFSave null def\n) puts
(/DSCPageCount 0 def\n) puts
(/DoPDFPage {dup /Page# exch store pdfgetpage pdfshowpage } def\n) puts
(GS_PDF_ProcSet begin\npdfdict begin\n) puts
(%%EndProlog\n) puts
(%%BeginSetup\n) puts
DSCfile PDFname write==only
( \(r\) file { DELAYSAFER { .setsafe } if } stopped pop\n) puts
( pdfopen begin\n) puts
(%%EndSetup\n) puts
% process each page
FirstPage 1 LastPage {
(%%Page: ) puts
dup DSCstring cvs puts
( ) puts
dup DSCstring cvs puts
(\n) puts
dup pdfgetpage
dup /MediaBox pget pop
(%%PageMedia: y) puts
aload pop 3 -1 roll sub DSCstring cvs puts
(x) puts exch sub DSCstring cvs puts
(\n) puts
dup /CropBox pget {
(%%PageBoundingBox: ) puts
{DSCfile exch write=only ( ) puts} forall
(\n) puts
} if
/Rotate pget {
(%%PageOrientation: ) puts
90 div cvi 4 mod dup 0 lt {4 add} if
[(Portrait) (Landscape) (UpsideDown) (Seascape)] exch get puts
(\n) puts
} if
DSCfile exch DSCstring cvs writestring
( DoPDFPage\n) puts
} for
currentdict pdfclose
end
end
end
% write trailer
(%%Trailer\n) puts
(currentdict pdfclose\nend\nend\nend\n) puts
(%%EOF\n) puts
% close output file and exit
DSCfile closefile
quit
% end of pdf2dsc.ps