diff options
Diffstat (limited to 'usergrps/uktug/baskervi/epstopdf')
| -rw-r--r-- | usergrps/uktug/baskervi/epstopdf | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/usergrps/uktug/baskervi/epstopdf b/usergrps/uktug/baskervi/epstopdf new file mode 100644 index 0000000000..8f1010f9a7 --- /dev/null +++ b/usergrps/uktug/baskervi/epstopdf @@ -0,0 +1,282 @@ +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;'; +# + +### program identification +my $program = "epstopdf"; +my $filedate="1999/05/06"; +my $fileversion="2.5"; +my $copyright = "Copyright 1998,1999 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 "grestore\n" if $BBCorrected; +close(OUT); +warning "BoundingBox not found" unless $BBCorrected; +debug "Ready."; +; |