| 1 | #!/usr/bin/env perl
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| 2 |
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| 3 | # Copyright 1998-2001 by Sebastian Rahtz et al.
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| 4 | # epstopdf is free software; you can redistribute it and/or modify
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| 5 | # it under the terms of the GNU General Public License as published by
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| 6 | # the Free Software Foundation; either version 2 of the License, or
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| 7 | # (at your option) any later version.
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| 8 | #
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| 9 | # epstopdf is distributed in the hope that it will be useful,
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| 10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | # GNU General Public License for more details.
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| 13 | #
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| 14 | # You should have received a copy of the GNU General Public License
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| 15 | # along with epstopdf; if not, write to the Free Software
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| 16 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 17 |
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| 18 | use strict;
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| 19 |
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| 20 | # A script to transform an EPS file so that:
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| 21 | # a) it is guarenteed to start at the 0,0 coordinate
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| 22 | # b) it sets a page size exactly corresponding to the BoundingBox
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| 23 | # This means that when Ghostscript renders it, the result needs no
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| 24 | # cropping, and the PDF MediaBox is correct.
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| 25 | # c) the result is piped to Ghostscript and a PDF version written
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| 26 | #
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| 27 | # It needs a Level 2 PS interpreter.
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| 28 | # If the bounding box is not right, of course, you have problems...
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| 29 | #
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| 30 | # The only thing I have not allowed for is the case of
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| 31 | # "%%BoundingBox: (atend)", which is more complicated.
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| 32 | #
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| 33 | # Sebastian Rahtz, for Elsevier Science
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| 34 | #
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| 35 | # now with extra tricks from Hans Hagen's texutil.
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| 36 | #
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| 37 | # History
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| 38 | # 1999/05/06 v2.5 (Heiko Oberdiek)
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| 39 | # * New options: --hires, --exact, --filter, --help.
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| 40 | # * Many cosmetics: title, usage, ...
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| 41 | # * New code for debug, warning, error
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| 42 | # * Detecting of cygwin perl
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| 43 | # * Scanning for %%{Hires,Exact,}BoundingBox.
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| 44 | # * Scanning only the header in order not to get a wrong
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| 45 | # BoundingBox of an included file.
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| 46 | # * (atend) supported.
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| 47 | # * uses strict; (earlier error detecting).
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| 48 | # * changed first comment from '%!PS' to '%!';
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| 49 | # * corrected (atend) pattern: '\s*\(atend\)'
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| 50 | # * using of $bbxpat in all BoundingBox cases,
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| 51 | # correct the first white space to '...Box:\s*$bb...'
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| 52 | # * corrected first line (one line instead of two before 'if 0;';
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| 53 | # 2000/11/05 v2.6 (Heiko Oberdiek)
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| 54 | # * %%HiresBoundingBox corrected to %%HiResBoundingBox
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| 55 | # 2001/03/05 v2.7 (Heiko Oberdiek)
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| 56 | # * Newline before grestore for the case that there is no
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| 57 | # whitespace at the end of the eps file.
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| 58 | # 2006/05/09 v2.8 (David W. Rankin, Jr.)
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| 59 | # * option --pdfvers to specify the Ghostscript command to set
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| 60 | # the PDF version output.
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| 61 |
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| 62 | my $IsWin32 = ($^O =~ /MSWin32/i);
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| 63 |
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| 64 | ### program identification
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| 65 | my $program = "epstosmth";
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| 66 | my $filedate="2006/05/09";
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| 67 | my $fileversion="2.8";
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| 68 | my $copyright = "Copyright 1998-2001 by Sebastian Rahtz et al.";
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| 69 | my $title = "\U$program\E $fileversion, $filedate - $copyright\n";
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| 70 |
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| 71 | ### ghostscript command name
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| 72 | my $GS = "gs";
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| 73 | $GS = "gswin32c" if $^O eq 'MSWin32';
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| 74 |
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| 75 | if ($IsWin32) {
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| 76 | $GS = `kpsecheck --ghostscript`;
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| 77 | $GS =~ m/^dll\s*:\s*(.+)/mio;
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| 78 | $GS = $1;
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| 79 | $GS =~ s/gsdll32.dll/gswin32c.exe/io;
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| 80 | if ($GS eq "") {
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| 81 | $GS = "gswin32c.exe";
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| 82 | }
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| 83 | $GS = "\"$GS\"" if ($GS =~ m/\s/);
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| 84 | }
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| 85 |
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| 86 | ### options
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| 87 | $::opt_help=0;
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| 88 | $::opt_debug=0;
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| 89 | $::opt_compress=1;
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| 90 | $::opt_gs=1;
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| 91 | $::opt_hires=0;
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| 92 | $::opt_exact=0;
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| 93 | $::opt_filter=0;
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| 94 | $::opt_outfile="";
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| 95 | $::opt_pdfvers="";
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| 96 | $::opt_gsdev="pdfwrite";
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| 97 | $::opt_gsopt="";
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| 98 |
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| 99 | ### usage
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| 100 | my @bool = ("false", "true");
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| 101 | my $usage = <<"END_OF_USAGE";
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| 102 | ${title}Syntax: $program [options] <eps file>
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| 103 | Options:
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| 104 | --help: print usage
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| 105 | --outfile=<file>: write result to <file>
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| 106 | --(no)filter: read standard input (default: $bool[$::opt_filter])
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| 107 | --(no)gs: run ghostscript (default: $bool[$::opt_gs])
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| 108 | --(no)compress: use compression (default: $bool[$::opt_compress])
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| 109 | --(no)pdfvers: PDF Version for Output (default: [GhostScript's default])
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| 110 | --(no)hires: scan HiResBoundingBox (default: $bool[$::opt_hires])
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| 111 | --(no)exact: scan ExactBoundingBox (default: $bool[$::opt_exact])
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| 112 | --(no)debug: debug informations (default: $bool[$::opt_debug])
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| 113 | --gsdev=<dev>: select gs device
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| 114 | --gsopt=<opts>: additional gs options
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| 115 | Examples for producing 'test.pdf':
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| 116 | * $program test.eps
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| 117 | * produce postscript | $program --filter >test.pdf
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| 118 | * produce postscript | $program -f -d -o=test.pdf
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| 119 | Example: look for HiResBoundingBox and produce corrected PostScript:
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| 120 | * $program -d --nogs -hires test.ps>testcorr.ps
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| 121 | END_OF_USAGE
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| 122 |
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| 123 | ### process options
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| 124 | use Getopt::Long;
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| 125 | GetOptions (
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| 126 | "help!",
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| 127 | "debug!",
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| 128 | "filter!",
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| 129 | "compress!",
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| 130 | "gs!",
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| 131 | "hires!",
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| 132 | "exact!",
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| 133 | "pdfvers=s",
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| 134 | "outfile=s",
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| 135 | "gsdev=s",
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| 136 | "gsopt=s",
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| 137 | ) or die $usage;
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| 138 |
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| 139 | ### help functions
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| 140 | sub debug {
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| 141 | print STDERR "* @_\n" if $::opt_debug;
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| 142 | }
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| 143 | sub warning {
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| 144 | print STDERR "==> Warning: @_!\n";
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| 145 | }
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| 146 | sub error {
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| 147 | die "$title!!! Error: @_!\n";
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| 148 | }
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| 149 | sub errorUsage {
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| 150 | die "$usage\n!!! Error: @_!\n";
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| 151 | }
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| 152 |
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| 153 | ### option help
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| 154 | die $usage if $::opt_help;
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| 155 |
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| 156 | ### get input filename
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| 157 | my $InputFilename = "";
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| 158 | if ($::opt_filter) {
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| 159 | @ARGV == 0 or
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| 160 | die errorUsage "Input file cannot be used with filter option";
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| 161 | $InputFilename = "-";
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| 162 | debug "Input file: standard input";
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| 163 | }
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| 164 | else {
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| 165 | @ARGV > 0 or die errorUsage "Input filename missing";
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| 166 | @ARGV < 2 or die errorUsage "Unknown option or too many input files";
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| 167 | $InputFilename = $ARGV[0];
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| 168 | -f $InputFilename or error "'$InputFilename' does not exist";
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| 169 | debug "Input filename:", $InputFilename;
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| 170 | }
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| 171 |
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| 172 | ### option compress
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| 173 | my $GSOPTS = "$::opt_gsopt ";
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| 174 |
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| 175 | debug "gs opts:", $GSOPTS;
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| 176 |
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| 177 | $GSOPTS .= "-dUseFlateCompression=false " unless $::opt_compress;
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| 178 |
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| 179 | ### option pdfvers (GhostScript PDF Compatability options)
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| 180 | $GSOPTS .= "-dCompatibilityLevel=$::opt_pdfvers " unless $::opt_pdfvers eq "";
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| 181 |
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| 182 | ### option BoundingBox types
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| 183 | my $BBName = "%%BoundingBox:";
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| 184 | !($::opt_hires and $::opt_exact) or
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| 185 | error "Options --hires and --exact cannot be used together";
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| 186 | $BBName = "%%HiResBoundingBox:" if $::opt_hires;
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| 187 | $BBName = "%%ExactBoundingBox:" if $::opt_exact;
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| 188 | debug "BoundingBox comment:", $BBName;
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| 189 |
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| 190 | ### option outfile
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| 191 | my $OutputFilename = $::opt_outfile;
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| 192 | if ($OutputFilename eq "") {
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| 193 | if ($::opt_gs) {
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| 194 | $OutputFilename = $InputFilename;
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| 195 | if (!$::opt_filter) {
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| 196 | $OutputFilename =~ s/\.[^\.]*$//;
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| 197 | if ($::opt_gsdev =~ m/^pdf/) {
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| 198 | $OutputFilename .= '.pdf';
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| 199 | } elsif ($::opt_gsdev =~ m/^png/) {
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| 200 | $OutputFilename .= '.png';
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| 201 | } elsif ($::opt_gsdev =~ m/^jpeg/) {
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| 202 | $OutputFilename .= '.jpg';
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| 203 | } else {
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| 204 | $OutputFilename .= ($::opt_gsdev eq "" ? ".pdf" : ".$::opt_gsdev");
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| 205 | }
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| 206 | }
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| 207 | }
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| 208 | else {
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| 209 | $OutputFilename = "-"; # standard output
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| 210 | }
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| 211 | }
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| 212 | if ($::opt_filter) {
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| 213 | debug "Output file: standard output";
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| 214 | }
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| 215 | else {
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| 216 | debug "Output filename:", $OutputFilename;
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| 217 | }
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| 218 |
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| 219 | ### option gs
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| 220 | if ($::opt_gs) {
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| 221 | debug "Ghostscript command:", $GS;
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| 222 | debug "Compression:", ($::opt_compress) ? "on" : "off";
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| 223 | }
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| 224 |
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| 225 | ### open input file
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| 226 | open(IN,"<$InputFilename") or error "Cannot open",
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| 227 | ($::opt_filter) ? "standard input" : "'$InputFilename'";
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| 228 | binmode IN;
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| 229 |
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| 230 | ### open output file
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| 231 | if ($::opt_gs) {
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| 232 | my $pipe = "$GS -q -sDEVICE=$::opt_gsdev $GSOPTS " .
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| 233 | "-sOutputFile=$OutputFilename - -c quit";
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| 234 | debug "Ghostscript pipe:", $pipe;
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| 235 | open(OUT,"|$pipe") or error "Cannot open Ghostscript for piped input";
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| 236 | }
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| 237 | else {
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| 238 | open(OUT,">$OutputFilename") or error "Cannot write '$OutputFilename";
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| 239 | }
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| 240 |
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| 241 | ### scan first line
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| 242 | my $header = 0;
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| 243 | $_ = <IN>;
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| 244 | if (/%!/) {
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| 245 | # throw away binary junk before %!
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| 246 | s/(.*)%!/%!/o;
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| 247 | }
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| 248 | $header = 1 if /^%/;
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| 249 | debug "Scanning header for BoundingBox";
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| 250 | print OUT;
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| 251 |
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| 252 | ### variables and pattern for BoundingBox search
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| 253 | my $bbxpatt = '[0-9eE\.\-]';
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| 254 | # protect backslashes: "\\" gets '\'
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| 255 | my $BBValues = "\\s*($bbxpatt+)\\s+($bbxpatt+)\\s+($bbxpatt+)\\s+($bbxpatt+)";
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| 256 | my $BBCorrected = 0;
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| 257 |
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| 258 | sub CorrectBoundingBox {
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| 259 | my ($llx, $lly, $urx, $ury) = @_;
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| 260 | debug "Old BoundingBox:", $llx, $lly, $urx, $ury;
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| 261 | my ($width, $height) = ($urx - $llx, $ury - $lly);
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| 262 | my ($xoffset, $yoffset) = (-$llx, -$lly);
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| 263 | debug "New BoundingBox: 0 0", $width, $height;
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| 264 | debug "Offset:", $xoffset, $yoffset;
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| 265 |
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| 266 | print OUT "%%BoundingBox: 0 0 $width $height\n";
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| 267 | print OUT "<< /PageSize [$width $height] >> setpagedevice\n";
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| 268 | print OUT "gsave $xoffset $yoffset translate\n";
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| 269 | }
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| 270 |
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| 271 | ### scan header
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| 272 | if ($header) {
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| 273 | while (<IN>) {
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| 274 |
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| 275 | ### end of header
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| 276 | if (!/^%/ or /^%%EndComments/) {
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| 277 | print OUT;
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| 278 | last;
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| 279 | }
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| 280 |
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| 281 | ### BoundingBox with values
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| 282 | if (/^$BBName$BBValues/) {
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| 283 | CorrectBoundingBox $1, $2, $3, $4;
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| 284 | $BBCorrected = 1;
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| 285 | last;
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| 286 | }
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| 287 |
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| 288 | ### BoundingBox with (atend)
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| 289 | if (/^$BBName\s*\(atend\)/) {
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| 290 | debug $BBName, "(atend)";
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| 291 | if ($::opt_filter) {
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| 292 | warning "Cannot look for BoundingBox in the trailer",
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| 293 | "with option --filter";
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| 294 | last;
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| 295 | }
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| 296 | my $pos = tell(IN);
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| 297 | debug "Current file position:", $pos;
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| 298 |
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| 299 | # looking for %%BoundingBox
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| 300 | while (<IN>) {
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| 301 | # skip over included documents
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| 302 | if (/^%%BeginDocument/) {
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| 303 | while (<IN>) {
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| 304 | last if /^%%EndDocument/;
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| 305 | }
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| 306 | }
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| 307 | if (/^$BBName$BBValues/) {
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| 308 | CorrectBoundingBox $1, $2, $3, $4;
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| 309 | $BBCorrected = 1;
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| 310 | last;
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| 311 | }
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| 312 | }
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| 313 |
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| 314 | # go back
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| 315 | seek(IN, $pos, 0) or error "Cannot go back to line '$BBName (atend)'";
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| 316 | last;
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| 317 | }
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| 318 |
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| 319 | # print header line
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| 320 | print OUT;
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| 321 | }
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| 322 | }
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| 323 |
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| 324 | ### print rest of file
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| 325 | while (<IN>) {
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| 326 | print OUT;
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| 327 | }
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| 328 |
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| 329 | ### close files
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| 330 | close(IN);
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| 331 | print OUT "\ngrestore\n" if $BBCorrected;
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| 332 | close(OUT);
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| 333 | warning "BoundingBox not found" unless $BBCorrected;
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| 334 | debug "Ready.";
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| 335 | ;
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