eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}' && eval 'exec perl -S $0 $argv:q' if 0; use strict; $^W=1; # turn warning on # # pdfcrop.pl # # Copyright (C) 2002, 2004, 2005, 2008 Heiko Oberdiek. # # This program may be distributed and/or modified under the # conditions of the LaTeX Project Public License, either version 1.2 # of this license or (at your option) any later version. # The latest version of this license is in # http://www.latex-project.org/lppl.txt # and version 1.2 or later is part of all distributions of LaTeX # version 1999/12/01 or later. # # See file "README" for a list of files that belong to this project. # # This file "pdfcrop.pl" may be renamed to "pdfcrop" # for installation purposes. # my $file = "pdfcrop.pl"; my $program = uc($&) if $file =~ /^\w+/; my $version = "1.9"; my $date = "2008/04/05"; my $author = "Heiko Oberdiek"; my $copyright = "Copyright (c) 2002-2008 by $author."; # # Reqirements: Perl5, Ghostscript # History: # 2002/10/30 v1.0: First release. # 2002/10/30 v1.1: Option --hires added. # 2002/11/04 v1.2: "nul" instead of "/dev/null" for windows. # 2002/11/23 v1.3: Use of File::Spec module's "devnull" call. # 2002/11/29 v1.4: Option --papersize added. # 2004/06/24 v1.5: Clear map file entries so that pdfTeX # does not touch the fonts. # 2004/06/26 v1.6: Use mgs.exe instead of gswin32c.exe for MIKTEX. # 2005/03/11 v1.7: Support of spaces in file names # (open("-|") is used for ghostscript call). # 2008/01/09 v1.8: Fix for moving the temporary file to the output # file across file system boundaries. # 2008/04/05 v1.9: Options --resolution and --bbox added. # ### program identification my $title = "$program $version, $date - $copyright\n"; ### error strings my $Error = "!!! Error:"; # error prefix ### string constants for Ghostscript run # get Ghostscript command name my $GS = "gs"; $GS = "gs386" if $^O =~ /dos/i; $GS = "gsos2" if $^O =~ /os2/i; $GS = "gswin32c" if $^O =~ /mswin32/i; $GS = "gswin32c" if $^O =~ /cygwin/i; $GS = "mgs" if defined($ENV{"TEXSYSTEM"}) and $ENV{"TEXSYSTEM"} =~ /miktex/i; # Windows detection (no SIGHUP) my $Win = 0; $Win = 1 if $^O =~ /mswin32/i; $Win = 1 if $^O =~ /cygwin/i; # "null" device use File::Spec::Functions qw(devnull); my $null = devnull(); ### variables my $inputfile = ""; my $outputfile = ""; my $tmp = "tmp-\L$program\E-$$"; ### option variables my @bool = ("false", "true"); $::opt_help = 0; $::opt_debug = 0; $::opt_verbose = 0; $::opt_gscmd = $GS; $::opt_pdftexcmd = "pdftex"; $::opt_margins = "0 0 0 0"; $::opt_clip = 0; $::opt_hires = 0; $::opt_papersize = ""; $::opt_resolution = ""; $::opt_bbox = ""; my $usage = <<"END_OF_USAGE"; ${title}Syntax: \L$program\E [options] [output file] Function: Margins are calculated and removed for each page in the file. Options: (defaults:) --help print usage --(no)verbose verbose printing ($bool[$::opt_verbose]) --(no)debug debug informations ($bool[$::opt_debug]) --gscmd call of ghostscript ($::opt_gscmd) --pdftexcmd call of pdfTeX ($::opt_pdftexcmd) --margins " " ($::opt_margins) add extra margins, unit is bp. If only one number is given, then it is used for all margins, in the case of two numbers they are also used for right and bottom. --(no)clip clipping support, if margins are set ($bool[$::opt_clip]) --(no)hires using `%%HiResBoundingBox' ($bool[$::opt_hires]) instead of `%%BoundingBox' Expert options: --papersize parameter for gs's -sPAPERSIZE=, use only with older gs versions <7.32 ($::opt_papersize) --resolution x () --resolution pass argument to ghostscript's option -r Example: --resolution 72 --bbox " " () override bounding box found by ghostscript Examples: \L$program\E --margins 10 input.pdf output.pdf \L$program\E --margins '5 10 5 20' --clip input.pdf output.pdf END_OF_USAGE ### process options my @OrgArgv = @ARGV; use Getopt::Long; GetOptions( "help!", "debug!", "verbose!", "gscmd=s", "pdftexcmd=s", "margins=s", "clip!", "hires!", "papersize=s", "resolution=s", "bbox=s", ) or die $usage; !$::opt_help or die $usage; $::opt_verbose = 1 if $::opt_debug; @ARGV >= 1 or die $usage; print $title; if ($::opt_bbox) { $::opt_bbox =~ s/^\s+//; $::opt_bbox =~ s/\s+$//; $::opt_bbox =~ s/\s+/ /; if ($::opt_bbox =~ /^-?\d*\.?\d+ -?\d*\.?\d+ -?\d*\.?\d+ -?\d*\.?\d+$/) { print "* Explicite Bounding Box: $::opt_bbox\n" if $::opt_debug; } else { die "$Error Parse error (option --bbox \"$::opt_bbox\")!\n"; } } @ARGV <= 2 or die "$Error Too many files!\n"; ### input file $inputfile = shift @ARGV; if (! -f $inputfile) { if (-f "$inputfile.pdf") { $inputfile .= ".pdf"; } else { die "$Error Input file `$inputfile' not found!\n"; } } print "* Input file: $inputfile\n" if $::opt_debug; ### output file if (@ARGV) { $outputfile = shift @ARGV; } else { $outputfile = $inputfile; $outputfile =~ s/\.pdf$//i; $outputfile .= "-crop.pdf"; } print "* Output file: $outputfile\n" if $::opt_debug; ### margins my ($llx, $lly, $urx, $ury) = (0, 0, 0, 0); if ($::opt_margins =~ /^\s*([\-\.\d]+)\s+([\-\.\d]+)\s+([\-\.\d]+)\s+([\-\.\d]+)\s*$/) { ($llx, $lly, $urx, $ury) = ($1, $2, $3, $4); } else { if ($::opt_margins =~ /^\s*([\-\.\d]+)\s+([\-\.\d]+)\s*$/) { ($llx, $lly, $urx, $ury) = ($1, $2, $1, $2); } else { if ($::opt_margins =~ /^\s*([\-\.\d]+)\s*$/) { ($llx, $lly, $urx, $ury) = ($1, $1, $1, $1); } else { die "$Error Parse error (option --margins)!\n"; } } } print "* Margins: $llx $lly $urx $ury\n" if $::opt_debug; ### cleanup system my @unlink_files = (); my $exit_code = 1; sub clean { print "* Cleanup\n" if $::opt_debug; if ($::opt_debug) { print "* Temporary files: @unlink_files\n"; } else { for (; @unlink_files>0; ) { unlink shift @unlink_files; } } } sub cleanup { clean(); exit($exit_code); } $SIG{'INT'} = \&cleanup; $SIG{'__DIE__'} = \&clean; ### Calculation of BoundingBoxes my @gsargs = ( "-sDEVICE=bbox", "-dBATCH", "-dNOPAUSE", ); push @gsargs, "-sPAPERSIZE=$::opt_papersize" if $::opt_papersize; push @gsargs, "-r$::opt_resolution" if $::opt_resolution; push @gsargs, "-c", "save", "pop", "-f", $inputfile ; my $tmpfile = "$tmp.tex"; push @unlink_files, $tmpfile; open(TMP, ">$tmpfile") or die "$Error Cannot write tmp file `$tmpfile'!\n"; print TMP "\\def\\pdffile{$inputfile}\n"; print TMP <<'END_TMP_HEAD'; \csname pdfmapfile\endcsname{} \def\page #1 [#2 #3 #4 #5]{% \count0=#1\relax \setbox0=\hbox{% \pdfximage page #1{\pdffile}% \pdfrefximage\pdflastximage }% \pdfhorigin=-#2bp\relax \pdfvorigin=#3bp\relax \pdfpagewidth=#4bp\relax \advance\pdfpagewidth by -#2bp\relax \pdfpageheight=#5bp\relax \advance\pdfpageheight by -#3bp\relax \ht0=\pdfpageheight \shipout\box0\relax } \def\pageclip #1 [#2 #3 #4 #5][#6 #7 #8 #9]{% \count0=#1\relax \dimen0=#4bp\relax \advance\dimen0 by -#2bp\relax \edef\imagewidth{\the\dimen0}% \dimen0=#5bp\relax \advance\dimen0 by -#3bp\relax \edef\imageheight{\the\dimen0}% \pdfximage page #1{\pdffile}% \setbox0=\hbox{% \kern -#2bp\relax \lower #3bp\hbox{\pdfrefximage\pdflastximage}% }% \wd0=\imagewidth\relax \ht0=\imageheight\relax \dp0=0pt\relax \pdfhorigin=#6pt\relax \pdfvorigin=#7bp\relax \pdfpagewidth=\imagewidth \advance\pdfpagewidth by #6bp\relax \advance\pdfpagewidth by #8bp\relax \pdfpageheight=\imageheight\relax \advance\pdfpageheight by #7bp\relax \advance\pdfpageheight by #9bp\relax \pdfxform0\relax \shipout\hbox{\pdfrefxform\pdflastxform}% }% END_TMP_HEAD print "* Running ghostscript for BoundingBox calculation ...\n" if $::opt_verbose; print "* Ghostscript call: $::opt_gscmd @gsargs\n" if $::opt_debug; my @bbox; if ($::opt_bbox) { $::opt_bbox =~ /([-\d\.]+) ([-\d\.]+) ([-\d\.]+) ([-\d\.]+)/; @bbox = ($1, $2, $3, $4); } my $page = 0; my $pid = open(KID_TO_READ, "-|"); if ($pid) { # parent while () { my $bb = ($::opt_hires) ? "%%HiResBoundingBox" : "%%BoundingBox"; next unless /^$bb:\s*([\.\d]+) ([\.\d]+) ([\.\d]+) ([\.\d]+)/o; @bbox = ($1, $2, $3, $4) unless $::opt_bbox; $page++; print "* Page $page: @bbox\n" if $::opt_verbose; if ($::opt_clip) { print TMP "\\pageclip $page [@bbox][$llx $lly $urx $ury]\n"; } else { my @bb = ($bbox[0] - $llx, $bbox[1] - $ury, $bbox[2] + $urx, $bbox[3] + $lly); print TMP "\\page $page [@bb]\n"; } } close(KID_TO_READ) || die "!!! Error: Execution of ghostscript failed: $?\n"; } else { # child open STDERR, '>&STDOUT' or die "!!! Error: Cannot redirect stderr: $!\n"; open STDOUT, ">$null" or die "!!! Error: Cannot write to $null!\n"; exec($::opt_gscmd, @gsargs) || die "!!! Error: Ghostscript run failed: $!\n"; # NOT REACHED } print TMP "\\csname \@\@end\\endcsname\n\\end\n"; close(TMP); ### Run pdfTeX push @unlink_files, "$tmp.log"; my $cmd; if ($::opt_verbose) { $cmd = "$::opt_pdftexcmd -interaction=nonstopmode $tmp"; } else { $cmd = "$::opt_pdftexcmd -interaction=batchmode $tmp"; } print "* Running pdfTeX ...\n" if $::opt_verbose; print "* pdfTeX call: $cmd\n" if $::opt_debug; if ($::opt_verbose) { system($cmd); } else { `$cmd`; } if ($?) { die "$Error pdfTeX run failed!\n"; } ### Move temp file to output if (!rename("$tmp.pdf", $outputfile)) { use File::Copy; move "$tmp.pdf", $outputfile or die "$Error Cannot move `$tmp.pdf' to `$outputfile'!\n"; } print "==> $page page", (($page == 1) ? "" : "s"), " written on `$outputfile'.\n"; $exit_code = 0; cleanup(); __END__