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+# Copyright 1998-2001 by Sebastian Rahtz et al.
+# epstopdf 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.
+#
+# epstopdf 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 epstopdf; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+use Strict;
+
+# A script to transform an EPS file so that:
+# a) it is guarenteed to start at the 0,0 coordinate
+# b) it sets a page size exactly corresponding to the BoundingBox
+# This means that when Ghostscript renders it, the result needs no
+# cropping, and the PDF MediaBox is correct.
+# c) the result is piped to Ghostscript and a PDF version written
+#
+# It needs a Level 2 PS interpreter.
+# If the bounding box is not right, of course, you have problems...
+#
+# The only thing I have not allowed for is the case of
+# "%%BoundingBox: (atend)", which is more complicated.
+#
+# Sebastian Rahtz, for Elsevier Science
+#
+# now with extra tricks from Hans Hagen's texutil.
+#
+# History
+# 1999/05/06 v2.5 (Heiko Oberdiek)
+# * New options: --hires, --exact, --filter, --help.
+# * Many cosmetics: title, usage, ...
+# * New code for debug, warning, error
+# * Detecting of cygwin perl
+# * Scanning for %%{Hires,Exact,}BoundingBox.
+# * Scanning only the header in order not to get a wrong
+# BoundingBox of an included file.
+# * (atend) supported.
+# * uses strict; (earlier error detecting).
+# * changed first comment from '%!PS' to '%!';
+# * corrected (atend) pattern: '\s*\(atend\)'
+# * using of $bbxpat in all BoundingBox cases,
+# correct the first white space to '...Box:\s*$bb...'
+# * corrected first line (one line instead of two before 'if 0;';
+# 2000/11/05 v2.6 (Heiko Oberdiek)
+# * %%HiresBoundingBox corrected to %%HiResBoundingBox
+# 2001/03/05 v2.7 (Heiko Oberdiek)
+# * Newline before grestore for the case that there is no
+# whitespace at the end of the eps file.
+#
+
+my $IsWin32 = ($^O =~ /MSWin32/i);
+
+### program identification
+my $program = "epstopdf";
+my $filedate="2001/03/05";
+my $fileversion="2.7";
+my $copyright = "Copyright 1998-2001 by Sebastian Rahtz et al.";
+my $title = "\U$program\E $fileversion, $filedate - $copyright\n";
+
+### ghostscript command name
+my $GS = "gs";
+$GS = "gswin32c" if $^O eq 'MSWin32';
+$GS = "gswin32c" if $^O =~ /cygwin/;
+
+if ($IsWin32) {
+ $GS = `kpsecheck --ghostscript`;
+ $GS =~ m/^dll\s*:\s*(.+)/mio;
+ $GS = $1;
+ $GS =~ s/gsdll32.dll/gswin32c.exe/io;
+ if ($GS eq "") {
+ $GS = "gswin32c.exe";
+ }
+ $GS = "\"$GS\"" if ($GS =~ m/\s/);
+}
+
+### options
+$::opt_help=0;
+$::opt_debug=0;
+$::opt_compress=1;
+$::opt_gs=1;
+$::opt_hires=0;
+$::opt_exact=0;
+$::opt_filter=0;
+$::opt_outfile="";
+
+### usage
+my @bool = ("false", "true");
+my $usage = <<"END_OF_USAGE";
+${title}Syntax: $program [options] <eps file>
+Options:
+ --help: print usage
+ --outfile=<file>: write result to <file>
+ --(no)filter: read standard input (default: $bool[$::opt_filter])
+ --(no)gs: run ghostscript (default: $bool[$::opt_gs])
+ --(no)compress: use compression (default: $bool[$::opt_compress])
+ --(no)hires: scan HiResBoundingBox (default: $bool[$::opt_hires])
+ --(no)exact: scan ExactBoundingBox (default: $bool[$::opt_exact])
+ --(no)debug: debug informations (default: $bool[$::opt_debug])
+Examples for producing 'test.pdf':
+ * $program test.eps
+ * produce postscript | $program --filter >test.pdf
+ * produce postscript | $program -f -d -o=test.pdf
+Example: look for HiResBoundingBox and produce corrected PostScript:
+ * $program -d --nogs -hires test.ps>testcorr.ps
+END_OF_USAGE
+
+### process options
+use Getopt::Long;
+GetOptions (
+ "help!",
+ "debug!",
+ "filter!",
+ "compress!",
+ "gs!",
+ "hires!",
+ "exact!",
+ "outfile=s",
+) or die $usage;
+
+### help functions
+sub debug {
+ print STDERR "* @_\n" if $::opt_debug;
+}
+sub warning {
+ print STDERR "==> Warning: @_!\n";
+}
+sub error {
+ die "$title!!! Error: @_!\n";
+}
+sub errorUsage {
+ die "$usage\n!!! Error: @_!\n";
+}
+
+### option help
+die $usage if $::opt_help;
+
+### get input filename
+my $InputFilename = "";
+if ($::opt_filter) {
+ @ARGV == 0 or
+ die errorUsage "Input file cannot be used with filter option";
+ $InputFilename = "-";
+ debug "Input file: standard input";
+}
+else {
+ @ARGV > 0 or die errorUsage "Input filename missing";
+ @ARGV < 2 or die errorUsage "Unknown option or too many input files";
+ $InputFilename = $ARGV[0];
+ -f $InputFilename or error "'$InputFilename' does not exist";
+ debug "Input filename:", $InputFilename;
+}
+
+### option compress
+my $GSOPTS = "";
+$GSOPTS = "-dUseFlateCompression=false " unless $::opt_compress;
+
+### option BoundingBox types
+my $BBName = "%%BoundingBox:";
+!($::opt_hires and $::opt_exact) or
+ error "Options --hires and --exact cannot be used together";
+$BBName = "%%HiResBoundingBox:" if $::opt_hires;
+$BBName = "%%ExactBoundingBox:" if $::opt_exact;
+debug "BoundingBox comment:", $BBName;
+
+### option outfile
+my $OutputFilename = $::opt_outfile;
+if ($OutputFilename eq "") {
+ if ($::opt_gs) {
+ $OutputFilename = $InputFilename;
+ if (!$::opt_filter) {
+ $OutputFilename =~ s/\.[^\.]*$//;
+ $OutputFilename .= ".pdf";
+ }
+ }
+ else {
+ $OutputFilename = "-"; # standard output
+ }
+}
+if ($::opt_filter) {
+ debug "Output file: standard output";
+}
+else {
+ debug "Output filename:", $OutputFilename;
+}
+
+### option gs
+if ($::opt_gs) {
+ debug "Ghostscript command:", $GS;
+ debug "Compression:", ($::opt_compress) ? "on" : "off";
+}
+
+### open input file
+open(IN,"<$InputFilename") or error "Cannot open",
+ ($::opt_filter) ? "standard input" : "'$InputFilename'";
+binmode IN;
+
+### open output file
+if ($::opt_gs) {
+ my $pipe = "$GS -q -sDEVICE=pdfwrite $GSOPTS " .
+ "-sOutputFile=$OutputFilename - -c quit";
+ debug "Ghostscript pipe:", $pipe;
+ open(OUT,"|$pipe") or error "Cannot open Ghostscript for piped input";
+}
+else {
+ open(OUT,">$OutputFilename") or error "Cannot write '$OutputFilename";
+}
+
+### scan first line
+my $header = 0;
+$_ = <IN>;
+if (/%!/) {
+ # throw away binary junk before %!
+ s/(.*)%!/%!/o;
+}
+$header = 1 if /^%/;
+debug "Scanning header for BoundingBox";
+print OUT;
+
+### variables and pattern for BoundingBox search
+my $bbxpatt = '[0-9eE\.\-]';
+ # protect backslashes: "\\" gets '\'
+my $BBValues = "\\s*($bbxpatt+)\\s+($bbxpatt+)\\s+($bbxpatt+)\\s+($bbxpatt+)";
+my $BBCorrected = 0;
+
+sub CorrectBoundingBox {
+ my ($llx, $lly, $urx, $ury) = @_;
+ debug "Old BoundingBox:", $llx, $lly, $urx, $ury;
+ my ($width, $height) = ($urx - $llx, $ury - $lly);
+ my ($xoffset, $yoffset) = (-$llx, -$lly);
+ debug "New BoundingBox: 0 0", $width, $height;
+ debug "Offset:", $xoffset, $yoffset;
+
+ print OUT "%%BoundingBox: 0 0 $width $height\n";
+ print OUT "<< /PageSize [$width $height] >> setpagedevice\n";
+ print OUT "gsave $xoffset $yoffset translate\n";
+}
+
+### scan header
+if ($header) {
+ while (<IN>) {
+
+ ### end of header
+ if (!/^%/ or /^%%EndComments/) {
+ print OUT;
+ last;
+ }
+
+ ### BoundingBox with values
+ if (/^$BBName$BBValues/) {
+ CorrectBoundingBox $1, $2, $3, $4;
+ $BBCorrected = 1;
+ last;
+ }
+
+ ### BoundingBox with (atend)
+ if (/^$BBName\s*\(atend\)/) {
+ debug $BBName, "(atend)";
+ if ($::opt_filter) {
+ warning "Cannot look for BoundingBox in the trailer",
+ "with option --filter";
+ last;
+ }
+ my $pos = tell(IN);
+ debug "Current file position:", $pos;
+
+ # looking for %%BoundingBox
+ while (<IN>) {
+ # skip over included documents
+ if (/^%%BeginDocument/) {
+ while (<IN>) {
+ last if /^%%EndDocument/;
+ }
+ }
+ if (/^$BBName$BBValues/) {
+ CorrectBoundingBox $1, $2, $3, $4;
+ $BBCorrected = 1;
+ last;
+ }
+ }
+
+ # go back
+ seek(IN, $pos, 0) or error "Cannot go back to line '$BBName (atend)'";
+ last;
+ }
+
+ # print header line
+ print OUT;
+ }
+}
+
+### print rest of file
+while (<IN>) {
+ print OUT;
+}
+
+### close files
+close(IN);
+print OUT "\ngrestore\n" if $BBCorrected;
+close(OUT);
+warning "BoundingBox not found" unless $BBCorrected;
+debug "Ready.";
+;