60 lines
2.4 KiB
PostScript
60 lines
2.4 KiB
PostScript
% Copyright (C) 2000 Aladdin Enterprises. All rights reserved.
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%
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% This file is part of Aladdin Ghostscript.
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%
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% Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
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% or distributor accepts any responsibility for the consequences of using it,
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% or for whether it serves any particular purpose or works at all, unless he
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% or she says so in writing. Refer to the Aladdin Ghostscript Free Public
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% License (the "License") for full details.
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%
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% Every copy of Aladdin Ghostscript must include a copy of the License,
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% normally in a plain ASCII text file named PUBLIC. The License grants you
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% the right to copy, modify and redistribute Aladdin Ghostscript, but only
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% under certain conditions described in the License. Among other things, the
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% License requires that the copyright notice and this notice be preserved on
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% all copies.
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% $Id: pdfeof.ps,v 1.1 2000/03/09 08:40:40 lpd Exp $
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% Patch to allow garbage on the end of PDF files.
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.currentglobal true .setglobal
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pdfdict begin
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% Skip backward over the %%EOF at the end of the PDF file.
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% We put this in a separate procedure so we can easily offer the option
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% of accepting garbage after the %%EOF, which the PDF specification
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% unambiguously forbids but which some applications (including, apparently,
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% Acrobat Distiller on the Macintosh) produce, and of accepting the
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% xref position on the same line as startxref.
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/findxref { % - findxref <xrefpos>
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PDFfile dup dup 0 setfileposition bytesavailable
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dup /PDFfilelen exch def
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% Find the last %%EOF string (within 2048 bytes)
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2048 sub PDFoffset .max
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2 copy setfileposition
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PDFfilelen exch sub string 1 index exch readstring pop {
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(\015%%EO) search { % Adobe can handle truncated key string
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pop pop % if found, keep searching 'post' string
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} {
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(\012%%EO) search
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{ pop pop } { exit } ifelse % exit if neither string found
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} ifelse
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} loop
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PDFfilelen exch length sub 4 sub PDFoffset .max setfileposition
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% Now read the startxref and xref start position.
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prevline token not { null } if dup type /integertype eq {
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exch pop cvi % xref start position
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exch PDFfile exch setfileposition
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prevline (startxref) linene { findxreferror } if
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pop
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} { % else, this file has 'startxref #####' format
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(startxref) ne { findxreferror } if
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cvi % xref start position
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exch PDFfile exch setfileposition
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} ifelse
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} bind def
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end % pdfdict
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.setglobal
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