Permalink
Find file
Fetching contributors…
Cannot retrieve contributors at this time
executable file 288 lines (258 sloc) 7.75 KB
eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}' && eval 'exec perl -S $0 $argv:q'
if 0;
use strict;
# Change by Thomas Esser, Sept. 1998: The above lines allows us to find
# perl along $PATH rather than guessing a fixed location. The above
# construction should work with most shells.
# 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.
#
### 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/;
### 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.";
;