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+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
+#
+# thumbpdf.pl
+#
+# Copyright (C) 1999-2005 Heiko Oberdiek.
+#
+# This work may be distributed and/or modified under the
+# conditions of the LaTeX Project Public License, either version 1.3
+# 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 1.3 or later is part of all distributions of LaTeX
+# version 2003/12/01 or later.
+#
+# This work has the LPPL maintenance status "maintained".
+#
+# This Current Maintainer of this work is Heiko Oberdiek.
+#
+# See file "readme.txt" for a list of files that belong to this project.
+#
+# This file "thumbpdf.pl" may be renamed to "thumbpdf"
+# for installation purposes.
+#
+my $file = "thumbpdf.pl";
+my $program = uc($&) if $file =~ /^\w+/;
+my $version = "3.8";
+my $date = "2005/07/06";
+my $author = "Heiko Oberdiek";
+my $copyright = "Copyright (c) 1999-2005 by $author.";
+#
+# Reqirements: Perl5, Ghostscript
+# History:
+# 1999/02/14 v1.0: First release.
+# 1999/02/23 v1.1:
+# * Looking for the media box to calculate the resolution
+# for Ghostscript
+# * new option --resolution
+# 1999/03/01 v1.2:
+# * optimization: indirect objects for length values removed.
+# * "first line" from epstopdf
+# 1999/03/12 v1.3:
+# * Copyright: LPPL
+# 1999/05/05 v1.4:
+# * Detecting of cygwin32 environment.
+# * Minor corrections of output of error messages.
+# * Sharing RGB objects.
+# 1999/06/13 v1.5:
+# * gs detection extended.
+# 1999/07/27 v1.6
+# 1999/08/08 v1.7:
+# * \immediate before \pdfobj (pdfTeX 0.14a)
+# 1999/09/09 v1.8
+# 1999/09/06 v1.9:
+# * Check for direct /Length values (for jpg images)
+# 2000/01/11 v1.10:
+# * Bug fix: /Length (direct) as last entry.
+# * Direct /Length in RGB objects supported.
+# 2000/01/19 v1.11:
+# * "for (my $j=0;...;...)" replaced by "my $j; for($j=0;...;...)",
+# because there exist perl versions that have problems with.
+# 2000/02/11 v1.12:
+# * Option `clean' added.
+# * The name of thumbnail data file: jobname.tnd,
+# if thumbpdf is called: thumbpdf jobname[.pdf] [options]
+# 2000/02/22 v2.0:
+# * pdfmark support for dvips/ps2pdf route added.
+# * <jobname>.tpt replaces thumbdta.tex (for pdfTeX)
+# <jobname>.tpm (for pdfmark)
+# <jobname>.top replaces thumbopt.tex
+# * Options `useps', `modes' added,
+# `makedef' renamed to `makedata'.
+# 2000/02/28 v2.1:
+# * Environment variable `THUMBPDF' supported.
+# 2000/03/07 v2.2:
+# * Support for Distiller 3 and 4, the streams are uncompressed.
+# * Call of gs is changed in order to show the currently processed
+# page number of the pdf file.
+# * Option --printgscmd creates the command line file `thumbpdf.gs'
+# for the Ghostscript call.
+# 2000/03/22 v2.3:
+# * Bug fix: --useps now works.
+# 2000/04/10 v2.4:
+# * Fix for ActiveState Perl 5.6.0: uc line changed, fork removed.
+# (Thanks to Andreas Buehmann <andreas.buehmann@gmx.de>.)
+# * Version test for thumbpdf.tex added for users that
+# mix versions, sigh.
+# 2000/07/29 v2.5:
+# * `save' trick in call of ghostscript.
+# * Undocumented option --gspages added.
+# 2000/09/27 v2.6
+# 2000/10/27 v2.7:
+# * -dFIXEDMEDIA=0 added in gs call
+# 2001/01/12 v2.8:
+# * Bug fix in dvips mode and active option `level2':
+# pack parameter corrected for little-endian machines.
+# * /Rotate in pdf pages:
+# ghostscript versions around 6.01 have added a hack
+# in /pdfshowpage_setpage, that ignores the /Rotate entry.
+# A patch is added to disable the hack.
+# * Ghostscript uses the MediaBox for calculating the
+# page size. For version 6.50 a patch is added to use
+# the /CropBox instead.
+# 2001/03/29 v2.9:
+# * Option --password added.
+# 2001/04/02 v2.10
+# 2001/04/26 v2.11
+# * Option --antialias added (suggestion of Juergen Bausa).
+# 2002/01/11 v3.0
+# * Syntax of option --antialias changed (see readme.txt).
+# * Support for VTeX's PS mode added.
+# * Greek mode added (see readme.txt).
+# * Signal handlers added for cleanup.
+# 2002/05/26 v3.1
+# * SIG_HUP unkown in Windows.
+# * Bug fix: The signal function for __DIE__ "cleanup" aborts
+# before the error message of "die" is printed.
+# Replaced by "clean" that does not contain "exit 1".
+# * Small bug fix in mode detection and mode "vtex"
+# removed from list. "vtexpdfmark" was detected,
+# "vtex" did not work and perhaps it will be used
+# later for VTeX in PDF mode.
+# 2002/05/26 v3.2
+# * Fix: "MacOS/X: darwin" is now not interpreted as
+# Windows.
+# 2003/03/19 v3.3
+# * Fix for gs 8.00 in mode dvips:
+# THB_DistillerPatch also applied to ghostscript >= 8.00.
+# 2003/06/06 v3.4
+# * Bug fix, two forgotten "pop"s added for Distiller case.
+# 2004/10/24 v3.5
+# * Revert Cygwin detection: is unix (request by Jan Nieuwenhuizen).
+# * LPPL 1.3.
+# 2004/11/19 v3.6
+# * Bug fix for dvips mode and gs < 8.00 (/stackunderflow in pop).
+# 2004/11/19 v3.7:
+# * For easier debugging, the special thumbpdf objects of
+# thumbpdf.pdf are now valid PDF objects (dictionaries).
+# * Remove of extra '\n' before "endstream" that is added
+# by pdfTeX 1.20a.
+# 2005/07/06 v3.8:
+# * Fix because of pdfTeX 1.30.
+#
+
+### 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;
+
+# Windows detection (no SIGHUP)
+my $Win = 0;
+$Win = 1 if $^O =~ /mswin32/i;
+
+my $gspages = 1;
+$gspages = 0 if $^O =~ /dos/i;
+
+### variables
+my $jobname = "";
+my $jobfile = "";
+my $pdftexfile = "";
+my $pdfmarkfile = "";
+my $psext = ".ps";
+my $pdfext = ".pdf";
+my $pdftexext = ".tpt";
+my $pdfmarkext = ".tpm";
+my $thumbprefix = "thb";
+my $envvar = "THUMBPDF";
+my $pdffile = "thumbpdf.pdf";
+my $logfile = "thumbpdf.log";
+my $texfile = "thumbpdf";
+my $package = "thumbpdf.sty";
+my $readme = "readme.txt";
+my $gscnffile = "thumbpdf.gs";
+my $gssection = "section I. `Known Problems'";
+my @cleanlist = ();
+my $resolution = 9;
+my $mode_pdftex = 0;
+my $mode_pdfmark = 0;
+my $antialias_default = "4";
+my @arglist = @ARGV;
+my $gskidrunning = 0;
+
+### option variables
+my @bool = ("false", "true");
+$::opt_device = "png16m";
+$::opt_compress = "10";
+$::opt_resolution = "";
+$::opt_modes = "pdftex";
+$::opt_gscmd = "";
+$::opt_level2 = 0;
+$::opt_help = 0;
+$::opt_quiet = 0;
+$::opt_debug = 0;
+$::opt_verbose = 0;
+$::opt_useps = 0;
+$::opt_printgscmd = 0;
+$::opt_gspages = $gspages; # undocumented
+$::opt_makepng = 1;
+$::opt_makepdf = 1;
+$::opt_makedata = 1;
+$::opt_clean = 1;
+$::opt_password = "";
+$::opt_antialias = $antialias_default;
+$::opt_greek = 0;
+
+my $usage = <<"END_OF_USAGE";
+${title}Syntax: \L$program\E [options] <jobname[.pdf|.ps]>
+Function: Support of thumbnails for pdfTeX or dvips/ps2pdf (pdfmark).
+ Thumbnails are generated by Ghostscript and the result is
+ written to data files for package `$package':
+ `<jobname>$pdftexext' (pdfTeX), `<jobname>$pdfmarkext' (pdfmark)
+Options: (defaults:)
+ --help print usage
+ --(no)quiet suppress messages ($bool[$::opt_quiet])
+ --(no)verbose verbose printing ($bool[$::opt_verbose])
+ --(no)debug debug informations ($bool[$::opt_debug])
+ --(no)makepng make thumbnails `$thumbprefix*.png' ($bool[$::opt_makepng])
+ --(no)makepdf make `$pdffile' with thumbnails as images ($bool[$::opt_makepdf])
+ --(no)makedata make data file(s) for package `$package' ($bool[$::opt_makedata])
+ --(no)clean clear temp files ($bool[$::opt_clean])
+ --(no)useps `makepng' uses `.ps' instead of `.pdf' file ($bool[$::opt_useps])
+ --(no)level2 `<jobname>.tpm' with ps level 2 features ($bool[$::opt_level2])
+ --(no)greek text in greek style (experimental) ($bool[$::opt_greek])
+ --antialias <num1>[num2] anti-aliasing, 0 = disable, 4 = max ($::opt_antialias)
+ --device|png [png]<dev> Ghostscript device for thumbnails,
+ dev = mono, gray, 16, 256, 16m ($::opt_device)
+ --resolution <res> thumbnail resolution for makepng ($resolution)
+ --compress <n> thumbnail compress level, n = 0..10 ($::opt_compress)
+ --modes <mode>[,mode] mode=pdftex|pdfmark|dvips|ps2pdf|
+ vtexpdfmark|all ($::opt_modes)
+ --password apassword for an encrypted pdf file ($::opt_password)
+END_OF_USAGE
+
+### environment variable THUMBPDF
+if ($ENV{$envvar}) {
+ unshift(@ARGV, split(/\s+/, $ENV{$envvar}));
+}
+
+### process options
+my @OrgArgv = @ARGV;
+use Getopt::Long;
+GetOptions(
+ "help!",
+ "quiet!",
+ "debug!",
+ "verbose!",
+ "device|png=s",
+ "gscmd=s",
+ "level2!",
+ "compress=i",
+ "resolution=f",
+ "modes=s",
+ "useps!",
+ "printgscmd!",
+ "gspages!",
+ "makepng!",
+ "makepdf!",
+ "makedata!",
+ "clean!",
+ "password=s",
+ "antialias=s",
+ "greek!"
+) or die $usage;
+!$::opt_help or die $usage;
+@ARGV < 2 or die "$usage$Error Too many files!\n";
+@ARGV == 1 or die "$usage$Error Missing jobname!\n";
+
+$::opt_device = "png$::opt_device" unless $::opt_device =~ /^png/;
+$::opt_quiet = 0 if $::opt_verbose;
+$::opt_clean = 0 if $::opt_debug or !$::opt_makepdf or !$::opt_makedata;
+
+$::opt_compress = 0 if $::opt_compress < 0;
+$::opt_compress = 10 if $::opt_compress > 10;
+my $J = "^^J";
+$J = "" if $::opt_compress == 10;
+
+$::opt_antialias = $antialias_default if $::opt_antialias eq "";
+$::opt_antialias =~ /^[0124][0124]?$/ or
+ die "$usage$Error Wrong value for option --antialias!\n";
+$::opt_antialias .= $::opt_antialias if length($::opt_antialias) < 2;
+my $AntiAliasText = substr($::opt_antialias, 0, 1);
+my $AntiAliasGraphics = substr($::opt_antialias, 1, 1);
+$AntiAliasText = "1" if $AntiAliasText eq "0";
+$AntiAliasGraphics = "1" if $AntiAliasGraphics eq "0";
+
+$GS = $::opt_gscmd if $::opt_gscmd;
+$gspages = $::opt_gspages;
+
+### get modes
+$::opt_modes = "\L$::opt_modes\E";
+$::opt_modes =~ s/dvips/pdfmark/g;
+$::opt_modes =~ s/ps2pdf/pdfmark/g;
+$::opt_modes =~ s/vtexpdfmark/pdfmark/g;
+$::opt_modes =~ s/vtexpdfmark/pdfmark/g;
+if ($::opt_modes =~ /pdftex/)
+{
+ $mode_pdftex = 1;
+ $::opt_modes =~ s/pdftex//g;
+}
+if ($::opt_modes =~ /pdfmark/)
+{
+ $mode_pdfmark = 1;
+ $::opt_modes =~ s/pdfmark//g;
+}
+if ($::opt_modes =~ /all/)
+{
+ $mode_pdftex = 1;
+ $mode_pdfmark = 1;
+ $::opt_modes =~ s/all//g;
+}
+$::opt_modes =~ s/\s+//g;
+$::opt_modes =~ s/,+/,/g;
+$::opt_modes =~ s/^,//;
+$::opt_modes =~ s/,$//;
+if ($::opt_modes ne "")
+{
+ die "$usage$Error Unknown mode(s): `$::opt_modes'\n";
+}
+if ($::opt_makedata)
+{
+ $mode_pdftex or $mode_pdfmark or
+ die "$usage$Error Missing mode!\n";
+}
+
+### get jobname
+$jobname = $ARGV[0];
+if ($::opt_useps)
+{
+ $jobname =~ s/\.ps$//i;
+ $jobname =~ s/\\/\//g;
+ $jobfile = $jobname . $psext;
+}
+else
+{
+ $jobname =~ s/\.pdf$//i;
+ $jobname =~ s/\\/\//g;
+ $jobfile = $jobname . $pdfext;
+}
+$pdftexfile = $jobname . $pdftexext;
+$pdfmarkfile = $jobname . $pdfmarkext;
+
+print $title unless $::opt_quiet;
+
+print "* jobname: `$jobname'\n" if $::opt_verbose;
+
+if ($::opt_debug) {
+ print <<"END_DEB";
+* OSNAME: $^O
+* PERL_VERSION: $]
+* ARGV: @OrgArgv
+END_DEB
+}
+
+### set signals
+$SIG{__DIE__} = \&clean;
+setsignals(\&cleanup);
+
+my $MaxThumb = 0;
+
+###
+### make thumbnails
+###
+if ($::opt_makepng)
+{
+ print "*** make png files / run Ghostscript ***\n"
+ unless $::opt_quiet or $::opt_printgscmd;
+ if ($::opt_useps)
+ {
+ print "* ps file: $jobfile\n" if $::opt_verbose;
+ }
+ else
+ {
+ print "* pdf file: $jobfile\n" if $::opt_verbose;
+ }
+ print "* Ghostscript command: `$GS'\n" .
+ "* Ghostscript png device: `$::opt_device'\n" if $::opt_verbose;
+
+ if ($::opt_resolution)
+ {
+ $resolution = $::opt_resolution
+ }
+ else
+ {
+ # looking for MediaBox
+
+ my $max_x = 0;
+ my $max_y = 0;
+ {
+ my $MB = $jobfile;
+ open(MB, $MB) or die "$Error Cannot open `$MB'!\n";
+ binmode(MB);
+ my $xy_patt = '[\-\.\d]';
+ while (<MB>)
+ {
+ if (/\/MediaBox\s*\[\s*($xy_patt+)\s+($xy_patt+)\s+($xy_patt+)\s+($xy_patt+)\s*\]/)
+ {
+ my $x = $3 - $1;
+ my $y = $4 - $2;
+ $max_x = $x if $x > $max_x;
+ $max_y = $y if $y > $max_y;
+ }
+ }
+ close(MB);
+ }
+ if ($max_x <= 0 || $max_y <= 0)
+ {
+ print "!!! Warning: MediaBox not found, " .
+ "using default resolution: $resolution DPI\n";
+ }
+ else
+ {
+ print "* Max. Size of MediaBox: $max_x x $max_y\n" if $::opt_verbose;
+
+ my $rx = 106 * 72 / $max_x;
+ my $ry = 106 * 72 / $max_y;
+ $resolution = $rx;
+ $resolution = $ry if $ry < $rx;
+ print "* Resolution: $resolution DPI\n" if $::opt_verbose;
+ }
+ }
+
+# Ghostscript's pdfshowpage_setpage is patched for solving
+# some problems:
+# * gs6.0* includes a hack that ignores the /Rotate entry
+# in the PDF page, if OutputFile is set.
+# gs6.50 does not need a fix and it is not applied,
+# because pdfshowpage_setpage does not contain /OutputFile.
+# * If /CropBox is set, then it should be used instead
+# of the /MediaBox entry. Because the CropBox area should
+# be part of the MediaBox, the MediaBox is overwritten
+# with the CropBox values for generating the thumbnails.
+# The fixes are only applied for versions >= 6.0, because
+# gs5.50 gets a /PageSize problem with this fix.
+#
+ my $SetPageHack = <<'SET_PAGE_HACK';
+currentglobal true setglobal
+false
+/product where {
+ pop
+ product (Ghostscript) search {
+ pop pop pop
+ revision 600 ge {
+ pop true
+ } if
+ }{pop} ifelse
+} if
+{ /pdfdict where {
+ pop
+ pdfdict begin
+ /pdfshowpage_setpage
+ [ pdfdict /pdfshowpage_setpage get
+ { dup type /nametype eq
+ { dup /OutputFile eq
+ { pop /AntiRotationHack
+ }{
+ dup /MediaBox eq revision 650 ge and
+ { /THB.CropHack {
+ 1 index /CropBox pget
+ { 2 index exch /MediaBox exch put
+ } if
+ } def
+ /THB.CropHack cvx
+ } if
+ } ifelse
+ } if
+ } forall
+ ] cvx def
+ end
+ } if
+} if
+setglobal
+SET_PAGE_HACK
+
+ my $Greek = "";
+ $Greek = <<'END_GREEK' if $::opt_greek;
+currentglobal true setglobal
+userdict begin
+ % * Patch for `show'
+ /THB_ORG_show {show} bind def
+ /THB_greekstring
+ /.charboxpath where
+ {
+ pop
+ {
+ currentpoint newpath moveto
+ true .charboxpath closepath fill
+ } bind def
+ }{
+ {
+ {
+ 1 string dup 0 4 -1 roll put
+ dup stringwidth pop exch
+ true charpath flattenpath pathbbox
+ 2 index sub exch 3 index sub exch rectfill
+ 0 rmoveto
+ } forall
+ } bind def
+ } ifelse
+ /show {
+ currentfont /FontType get 1 eq
+ {
+ dup
+ gsave
+ % assuming white background
+ [ currentrgbcolor ]
+ { 1 add 2 div } forall
+ setrgbcolor
+ THB_greekstring
+ grestore
+ stringwidth pop 0 rmoveto
+ }{
+ THB_ORG_show
+ } ifelse
+ } bind def
+
+ % * Patch for the PDF case
+ userdict /GS_PDF_ProcSet known
+ {
+ % GS_PDF_ProcSet is readonly, so it will be copied first
+ GS_PDF_ProcSet length 10 add dict dup
+ GS_PDF_ProcSet {
+ put dup
+ } forall
+ /GS_PDF_ProcSet exch def
+ dup
+ begin
+ % `setshowstate' contains the use of `show', so it has to
+ % be overwritten, because it was defined with `bind'.
+ % The definition is taken from `pdf_ops.ps'.
+ revision 710 lt
+ { % 5.50, 6.51, 7.00, 7.02
+
+/setshowstate
+ { WordSpacing 0 eq TextSpacing 0 eq and
+ { TextRenderingMode 0 eq
+ { { setfillstate show } }
+ { { false charpath textrenderingprocs TextRenderingMode get exec } }
+ ifelse
+ }
+ { TextRenderingMode 0 eq
+ { WordSpacing 0 eq
+ { { setfillstate TextSpacing exch 0 exch ashow } }
+ { TextSpacing 0 eq
+ { { setfillstate WordSpacing exch 0 exch 32 exch widthshow } }
+ { { setfillstate WordSpacing exch TextSpacing exch 0 32 4 2 roll 0 exch awidthshow } }
+ ifelse
+ }
+ ifelse
+ }
+ { { WordSpacing TextSpacing
+ % Implement the combination of t3 and false charpath.
+ % Note that we must use cshow for this, because we
+ % can't parse multi-byte strings any other way.
+ % Stack: string xword xchar
+ { pop pop (x) dup 0 3 index put false charpath
+ % Stack: xword xchar ccode
+ 3 copy 32 eq { add } { exch pop } ifelse 0 rmoveto pop
+ }
+ 4 -1 roll cshow pop pop
+ textrenderingprocs TextRenderingMode get exec
+ }
+ }
+ ifelse
+ }
+ ifelse /Show gput
+ } bdef
+
+ }{ % 7.10
+
+/setshowstate
+ { WordSpacing 0 eq TextSpacing 0 eq and
+ { TextRenderingMode 0 eq
+ { { setfillstate show } }
+ { { false charpath textrenderingprocs TextRenderingMode get exec } }
+ ifelse
+ }
+ { TextRenderingMode 0 eq
+ { WordSpacing 0 eq
+ { { setfillstate TextSpacing 0 Vexch 3 -1 roll ashow } }
+ { TextSpacing 0 eq
+ { { setfillstate WordSpacing 0 Vexch 32 4 -1 roll widthshow } }
+ { { setfillstate WordSpacing 0 Vexch 32
+ TextSpacing 0 Vexch 6 -1 roll awidthshow } }
+ ifelse
+ }
+ ifelse
+ }
+ { { WordSpacing TextSpacing
+ % Implement the combination of t3 and false charpath.
+ % Note that we must use cshow for this, because we
+ % can't parse multi-byte strings any other way.
+ % Stack: string xword xchar
+ { pop pop (x) dup 0 3 index put false charpath
+ % Stack: xword xchar ccode
+ 3 copy 32 eq { add } { exch pop } ifelse 0 Vexch rmoveto pop
+ }
+ 4 -1 roll cshow pop pop
+ textrenderingprocs TextRenderingMode get exec
+ }
+ }
+ ifelse
+ }
+ ifelse /Show gput
+ } bdef
+
+ } ifelse
+ end
+ readonly pop
+ } if
+end
+setglobal
+END_GREEK
+
+ my $SetPassword = "";
+ $SetPassword = "/PDFPassword($::opt_password)def" if $::opt_password;
+
+ my $PSHeader = "save pop $SetPassword $SetPageHack $Greek";
+ $PSHeader =~ s/%\s.*\n/ /g;
+ $PSHeader =~ s/\s+/ /g;
+ $PSHeader =~ s/\s+([\(\/\[\]\{\}])/$1/g;
+ $PSHeader =~ s/([\)\[\]\{\}])\s+/$1/g;
+ $PSHeader =~ s/\s+$//;
+
+ my $AntiAlias = "";
+ $AntiAlias = "\n-dTextAlphaBits=$AntiAliasText\n" .
+ "-dGraphicsAlphaBits=$AntiAliasGraphics"
+ if $::opt_antialias;
+
+ my $gs_cmd = <<"GS_CMD_END";
+$GS$AntiAlias
+-dNOPAUSE
+-dBATCH
+-sDEVICE=$::opt_device
+-r$resolution
+-sOutputFile=$thumbprefix%d.png
+-c "$PSHeader"
+-f $jobfile
+GS_CMD_END
+ # The trick with `save' comes from `ps2pdf':
+ # Doing an initial `save' helps keep fonts from being flushed
+ # between pages.
+
+ if ($::opt_printgscmd)
+ {
+ open(GSCNF, ">$gscnffile") or die "$Error Cannot open `$gscnffile'!\n";
+ $gs_cmd =~ s/^[^\r\n]+[\r\n]+//;
+ print GSCNF $gs_cmd;
+ close(GSCNF);
+ my $options = "@arglist";
+ $options =~ s/\s*--?pr[intgscmd]*\s*/ /i;
+ $options =~ s/^\s+//;
+ $options =~ s/\s+$//;
+ print <<"END_PERL" if $::opt_verbose;
+* Perl interpreter: $^X
+* Perl script: $0
+END_PERL
+ print <<"END_GS";
+1. Run `Ghostscript' manually:
+ ==> $GS \@$gscnffile
+2. Call `thumbpdf' again with the additional option `--nomakepng':
+ ==> thumbpdf --nomakepng $options
+END_GS
+ exit(0);
+ }
+
+ chomp($gs_cmd);
+ $gs_cmd =~ s/\n/ /mg;
+ print "> $gs_cmd\n" if $::opt_verbose;
+
+ if ($::opt_debug)
+ {
+ if ($gspages)
+ {
+ print "* Ghostscript with page numbers\n";
+ }
+ else
+ {
+ print "* Ghostscript without page numbers\n";
+ }
+ }
+
+ setsignals(\&gscleanup);
+ my $capture = "";
+ if ($gspages)
+ {
+ my $newline = 0;
+ open(KID, "$gs_cmd|") or die "$Error Cannot open Ghostscript ($!)!\n";
+ *::GSKID = *KID;
+ $gskidrunning = 1;
+ my $orgbar = $|;
+ $|=1;
+ while (<KID>)
+ {
+ $capture .= $_;
+ if ($::opt_verbose)
+ {
+ print;
+ }
+ else
+ {
+ if (!$::opt_quiet)
+ {
+ print if /^Processing pages/;
+ if (/^Page\s+(\d+)/)
+ {
+ print " " if $newline;
+ $newline = 1;
+ print "[$1]";
+ }
+ }
+ }
+ }
+ $gskidrunning =0;
+ if (!close(KID))
+ {
+ if ($!)
+ {
+ die "$Error Closing Ghostscript ($!)!\n";
+ }
+ else
+ {
+ my $exitvalue = $? >> 8;
+ die "$Error Closing Ghostscript (exit status: $exitvalue)!\n";
+ }
+ }
+ print "\n" if $newline;
+ $| = $orgbar;
+ }
+ else # without pages
+ {
+ $capture = `$gs_cmd`;
+ if (!defined($capture))
+ {
+ die "$Error Cannot execute Ghostscript!\n";
+ }
+ print $capture if $::opt_verbose;
+ }
+
+ if ($capture =~ /Error:\s*(.*)\n/)
+ {
+ die <<"END_DIE";
+$Error `$1' (Ghostscript)!
+See `$readme', $gssection, for further information.
+END_DIE
+ }
+ if ($capture =~ /Unknown device:\s*(.*)\n/)
+ {
+ die "$Error Unknown device `$1' (Ghostscript)!\n";
+ }
+ if ($?)
+ {
+ my $exitvalue = $?;
+ if ($exitvalue > 255)
+ {
+ $exitvalue >>= 8;
+ die "$Error Closing Ghostscript (exit status: $exitvalue)!\n";
+ }
+ die "$Error Closing Ghostscript ($exitvalue)!\n";
+ }
+ if ($capture =~ /Processing pages \d+ through (\d+)./)
+ {
+ $MaxThumb = $1;
+ }
+ print "* max. page: $MaxThumb\n" if $::opt_debug;
+ setsignals(\&cleanup);
+}
+
+###
+### make thumbpdf.pdf file
+###
+if ($::opt_makepdf)
+{
+ print "*** make `$pdffile' / run pdfTeX ***\n" unless $::opt_quiet;
+
+ if ($MaxThumb > 0)
+ {
+ my $i;
+ for ($i=1; $i<=$MaxThumb; $i++)
+ {
+ push(@cleanlist, "$thumbprefix$i.png");
+ }
+ }
+ else
+ {
+ # get max thumb number to speed up the pdfTeX run
+ $MaxThumb = 0;
+ foreach (glob("$thumbprefix*.png"))
+ {
+ next unless /$thumbprefix(\d+).png/;
+ $MaxThumb = $1 if $1 > $MaxThumb;
+ push(@cleanlist, $_);
+ }
+ }
+
+ push(@cleanlist, $logfile);
+ push(@cleanlist, $pdffile);
+
+ my $compress = $::opt_compress;
+ $compress = 9 if $::opt_compress == 10;
+ my $cmd = "pdftex \"" .
+ "\\nonstopmode" .
+ "\\pdfcompresslevel$compress" .
+ "\\def\\thumbjob{$jobname}" .
+ "\\def\\thumbmax{$MaxThumb}" .
+ "\\input $texfile" .
+ "\"";
+ print "> $cmd\n" if $::opt_verbose;
+ my @capture = `$cmd`;
+ if (!defined(@capture))
+ {
+ die "$Error Cannot execute pdfTeX!\n";
+ }
+ if ($::opt_verbose)
+ {
+ print @capture;
+ }
+ else
+ {
+ foreach (@capture)
+ {
+ print if /^!\s/;
+ }
+ }
+ if ($?)
+ {
+ my $exitvalue = $?;
+ if ($exitvalue > 255)
+ {
+ $exitvalue >>= 8;
+ die "$Error Closing pdfTeX (exit status: $exitvalue)!\n";
+ }
+ die "$Error Closing pdfTeX ($exitvalue)!\n";
+ }
+ # test version
+ my $versionfound = 0;
+ foreach (@capture)
+ {
+ if (/File:.*thumbpdf.*(\d\d\d\d\/\d\d\/\d\d)\s+v(\d+\.\d+)/)
+ {
+ $versionfound = 1;
+ if ($1 ne $date or $2 ne $version) {
+ print <<"END_WARN";
+!!! Warning: Version of `thumbpdf.tex' does not match with perl script!
+ Current `thumbpdf.tex': $1 v$2
+ Please install version: $date v$version
+END_WARN
+ }
+ }
+ }
+ print "!!! Warning: Version of `thumbpdf.tex' not found!\n"
+ if !$versionfound;
+
+ $_ = pop(@cleanlist);
+}
+
+###
+### parse thumbpdf.pdf
+###
+
+if ($::opt_makedata)
+{
+ push(@cleanlist, $pdffile);
+
+ print "*** parse `$pdffile' ***\n" unless $::opt_quiet;
+
+### reading file and parse obj structure
+
+ my @objno = (); # obj number
+ my @objdict = (); # boolean, object is dict
+ my @objtext = (); # text of object
+ my @objstream = (); # stream of object if any
+ my $maxobj = 0;
+
+ my @getobjindex = (); # $getobj[obj number] ==> index for $obj...[index]
+
+ # open file
+ my $PDF = $pdffile;
+ open(PDF, $PDF) or die "$Error Cannot open `$PDF'!\n";
+ binmode(PDF);
+ my $lineno = 0;
+
+ # read header
+ $_ = <PDF>; $lineno++;
+ $_ or die "$Error Cannot read header of `$PDF' or file is empty!\n";
+ /^%PDF/ or die "$Error No PDF specification found!\n";
+ print "* pdf header: $_" if ($::opt_debug);
+
+ # read body objects
+ my $count = 0;
+ while (<PDF>)
+ {
+ $lineno++;
+
+ # continue, if comment line (2nd line of PDF output by pdfTeX 1.30)
+ next if /^%/;
+
+ # stop at xref
+ last if /^xref$/;
+
+ # scan first obj line
+ /^(\d+)\s+0\s+obj\s*(<<)?$/ or
+ die "$Error `obj' expected on line $lineno!\n";
+ $objno[$count] = $1;
+ $getobjindex[$1] = $count;
+ $objdict[$count] = ($2); # boolean (if $2 exists)
+ my $stream = 0;
+ print "* obj $objno[$count]" .
+ (($objdict[$count]) ? " (dict)" : "") .
+ "\n" if $::opt_debug;
+
+ # get obj
+ $objtext[$count] = "";
+ while (<PDF>)
+ {
+ $lineno++;
+
+ if ($objdict[$count])
+ {
+ if (/^>>/)
+ {
+ last if /^>>\s+endobj$/; # obj without stream
+
+ # get stream
+ $_ = <PDF>; $lineno++;
+ /^stream$/ or die "$Error `stream' expected on line $lineno!\n";
+
+ print "* stream\n" if $::opt_debug;
+ $objstream[$count] = "";
+ while (<PDF>)
+ {
+ $lineno++;
+
+ if (/(.*)endstream$/)
+ {
+ $objstream[$count] .= $1;
+ last;
+ }
+ $objstream[$count] .= $_;
+ }
+
+ $_ = <PDF>; $lineno++;
+ /^endobj$/ or die "$Error `endobj' expected on line $lineno!\n";
+ last;
+ }
+ }
+ else # no dict
+ {
+ last if /^endobj$/;
+ }
+ $objtext[$count] .= $_;
+ }
+ $count++;
+ }
+ close(PDF);
+ $maxobj = $count;
+ print "* $maxobj objects found.\n" if $::opt_debug;
+
+### get thumbnail page numbers
+ my @thumbpageno = ();
+ my $found = 0;
+ foreach (@objtext)
+ {
+ if (/^<<\/ListThumbs\s+(.+)>>$/)
+ {
+ $_ = $1;
+ chomp;
+ @thumbpageno = split / /; # split(/ /, $_);
+ print "* ListThumbs: @thumbpageno\n" if $::opt_debug;
+ $found = 1;
+ last;
+ }
+ }
+ $found or die "$Error `/ListThumbs' not found!\n";
+ {
+ my $j;
+ for ($j=0; $j<@thumbpageno; $j++)
+ {
+ $thumbpageno[$j] = $1 if $thumbpageno[$j] =~ /^{(.+)}$/;
+ }
+ }
+
+### identify thumb objects
+
+ my @thumbobj = (); # index for @obj... with image stream
+ my @thumblength = (); # stream length values
+ my @thumbrgbobj = (); # index for @obj... with rgb stream
+ my @thumbrgblength = (); # rgb stream length values
+ my $maxthumb = 0;
+
+ $count = 0;
+ my $i;
+ for ($i=0; $i<$maxobj; $i++)
+ {
+ if ($objtext[$i] =~
+ /^\/Type\s+\/XObject\n\/Subtype\s+\/Image\n/m)
+ {
+ $thumbobj[$count] = $i;
+ $_ = $';
+ $objtext[$i] = $_;
+
+ # check width and height
+ /\/Width\s+(\d+)\n\/Height\s+(\d+)/m or
+ die "$Error width/height of thumbnail not found!\n";
+ print "* Size: $1x$2\n" if $::opt_debug;
+ print "==> Width ($1) " .
+ "of thumbnail `$thumbpageno[$count]' " .
+ "is larger than recommended (106).\n"
+ if $1 > 106;
+ print "==> Height ($2) " .
+ "of thumbnail `$thumbpageno[$count]' " .
+ "is larger than recommended (106).\n"
+ if $2 > 106;
+
+ # get stream length
+ if (/\/Length\s+(\d+)\s+([\/\>]|$)/m)
+ {
+ $thumblength[$count] = $1;
+ print "* Length (direct): $1\n" if $::opt_debug;
+ # remove whitespace after length obj
+ $objtext[$i] =~ s/(\/Length\s+\d+)\s+\n/$1\n/;
+ }
+ else # looking for indirect reference
+ {
+ /\/Length\s+(\d+)\s+0\s+R/m or
+ die "$Error `/Length' entry not found!\n";
+ # save obj text for later correction
+ my $objpre = $`;
+ my $objpost = $';
+ # look for length obj
+ $getobjindex[$1] or die "$Error Length obj not found!\n";
+ $objtext[$getobjindex[$1]] =~ /^(\d+)$/m or
+ die "$Error length value not found!\n";
+ $thumblength[$count] = $1;
+ print "* Length (indirect): $1\n" if $::opt_debug;
+ # insert obj length directly:
+ $objtext[$i] = $objpre . "/Length $1" . $objpost;
+ }
+
+ # remove \n from end of stream
+ if ($thumblength[$count] < length($objstream[$i])) {
+ chop($objstream[$i]);
+ }
+
+ # check /Indexed /DeviceRGB
+ if ($objtext[$i] =~
+ /\/ColorSpace\s+\[\/Indexed\s+\/DeviceRGB\s+(\d+)\s+(\d+)\s+0\s+R\]/m)
+ {
+ # correct thumb object text
+ $objtext[$i] =
+ "$`/ColorSpace [/Indexed /DeviceRGB $1 \\the\\pdflastobj\\ 0 R]$'";
+ # get RGB obj number
+ $getobjindex[$2] or die "$Error RGB object not found!\n";
+ $_ = $getobjindex[$2];
+ $thumbrgbobj[$count] = $_;
+ # get stream length
+ if ($objtext[$_] =~ /\/Length\s+(\d+)\s+([\/\>]|$)/m)
+ {
+ $thumbrgblength[$count] = $1;
+ print "* RGB length (direct): $1\n" if $::opt_debug;
+ $objtext[$_] =~ s/(\/Length\s+\d+)\s+\n/$1\n/;
+ }
+ else # looking for indirect reference
+ {
+ $objtext[$_] =~ /\/Length\s+(\d+)\s+0\s+R/m or
+ die "$Error Length entry of rgb object not found\n";
+ # save obj text for later correction
+ my $objrgbpre = $`;
+ my $objrgbpost = $';
+ # get rgb stream length
+ $getobjindex[$1] or die "$Error RGB length object not found!\n";
+ $objtext[$getobjindex[$1]] =~ /^(\d+)$/m or
+ die "$Error length value not found!\n";
+ $thumbrgblength[$count] = $1;
+ print "* RGB length (indirect): $1\n" if $::opt_debug;
+ # insert RGB object length directly:
+ $objtext[$_] = $objrgbpre . "/Length $1" . $objrgbpost;
+ }
+ }
+
+ $count++;
+ }
+ }
+ $maxthumb = $count;
+
+ if ($maxthumb != @thumbpageno)
+ {
+ my $pagecount = @thumbpageno;
+ die "$Error $maxthumb thumbnails found, but there should be $pagecount!\n";
+ }
+ print "* $maxthumb thumbnails found.\n" if $::opt_verbose;
+
+
+###
+### write data files
+###
+
+ my $timestamp;
+ {
+ my ($sec, $min, $hour, $mday, $mon, $year) = localtime();
+ $mon++;
+ $year += 1900;
+ $timestamp = sprintf("%04d/%02d/%02d %02d:%02d:%02d",
+ $year, $mon, $mday, $hour, $min, $sec);
+ }
+ if ($mode_pdftex)
+ {
+ print "*** write `$pdftexfile' (pdfTeX thumbnail data) ***\n"
+ unless $::opt_quiet;
+ my $DTA_PT = $pdftexfile;
+ open(DTA_PT, ">$DTA_PT") or die "$Error Cannot open `$DTA_PT'!\n";
+ binmode(DTA_PT);
+ print DTA_PT <<"END_DTA";
+% File: $DTA_PT
+% Producer: $program $version
+% Mode: pdftex
+% Date: $timestamp
+END_DTA
+ }
+ my $maxpagethumb;
+ my $dictbegin;
+ if ($mode_pdfmark)
+ {
+ print "*** write `$pdfmarkfile' (pdfmark thumbnail data) ***\n"
+ unless $::opt_quiet;
+ my $DTA_PM = $pdfmarkfile;
+ open(DTA_PM, ">$DTA_PM") or die "$Error Cannot open `$DTA_PM'!\n";
+ binmode(DTA_PM);
+
+ # write tex part
+ print DTA_PM <<"END_DTA";
+% \\iffalse
+% File: $DTA_PM
+% Producer: $program $version
+% Mode: pdfmark
+% Date: $timestamp
+% \\fi
+END_DTA
+
+ # looking for max. number of regular thumbnails
+ $maxpagethumb = $maxthumb;
+ for ($i=0; $i<$maxobj; $i++)
+ {
+ if ($objtext[$i] =~ /<<\/MaxThumbNumber\s+(\d+)>>/)
+ {
+ $maxpagethumb = $1;
+ last;
+ }
+ }
+
+ # write TeX part
+ for ($i=$maxpagethumb; $i<$maxthumb; $i++)
+ {
+ print DTA_PM "% \\DefThisThumb{$thumbpageno[$i]}\n";
+ }
+
+ # write PostScript header
+ my $dictstart = <<'END_DICT';
+ 4 dict begin
+ /enddict {
+ counttomark 2 idiv dup dict begin {def} repeat pop
+ currentdict end
+ } bind def
+END_DICT
+ chomp($dictstart);
+ $dictbegin = "[";
+ my $dictend = "enddict";
+ my $filter = "";
+ my $read = "readhexstring";
+ if ($::opt_level2)
+ {
+ $dictstart = " 3 dict begin";
+ $dictbegin = "<<";
+ $dictend = ">>";
+ $filter = " /ASCII85Decode filter";
+ $read = "readstring";
+ }
+
+ print DTA_PM <<"END_DTA";
+% \\endinput
+% TeX part ends here
+
+% PostScript definitions
+END_DTA
+
+ my $PS_Header = <<"END_HEAD";
+%
+% Default definition of pdfmark
+/pdfmark where {pop} {userdict /pdfmark /cleartomark load put} ifelse
+%
+% Check the version of Ghostscript. If it is below 6.0,
+% the commands, that produce the thumbnails, are defined
+% to be dummies.
+%
+true
+/product where {
+ pop
+ product (Ghostscript) search {
+ pop pop pop
+ revision 600 lt {
+ (!!! Warning (thumbpdf): Ghostscript 6.0 required for thumbnails!\\n)
+ print pop false
+ } if
+ }{pop} ifelse
+} if
+{
+% Syntax: <thumb object> thisTHB -
+% thisTHB is used globally, so it is defined in the current
+% dictionary (perhaps userdict should explicitly be set).
+ /thisTHB {[ exch /Thumb exch /PAGE pdfmark} bind def
+$dictstart
+% Syntax: <page object> <thumb object> pagethumb -
+ /pagethumb {
+ [ 3 1 roll $dictbegin exch /Thumb exch $dictend /PUT pdfmark
+ } bind def
+% Syntax: <thumb object> <stream length>
+% <mark> <key value pairs> streamobj -
+%
+% Distiller ignores the compression of previously compressed
+% streams and uses its own settings. Therefore for Distiller
+% the streams are uncompressed.
+% Now ghostscript versions greater than 8 behave in the same way
+% as Distiller. Therefore detection for this versions is added.
+% The detection and patch for distiller require features of level 2
+% and the filter /FlateDecode (level 3), that is used by pdfTeX's
+% compression.
+ /THB_DistillerPatch false def
+ /languagelevel where {
+ pop
+ languagelevel 2 ge {
+ product (Distiller) search {pop pop pop true}{pop false} ifelse
+ product (Ghostscript) search {
+ pop pop pop
+ revision 800 ge
+ }{pop false} ifelse
+ or
+ {
+ (FlateDecode) {
+ pop
+% Syntax: <dict> THB_DistillerPatch <dict> false
+% <dict> THB_DistillerPatch <dict> <filter>
+ /THB_DistillerPatch {
+ dup /Filter known {
+ dup dup /Filter get exch /Filter undef
+ }{false} ifelse
+ } bind def
+ } (FlateDecode) /Filter resourceforall
+ } if
+ } if
+ } if
+ /streamobj {
+ $dictend exch
+% Stack: <thumb> <dict> <length>
+ 3 -1 roll dup
+% Stack: <dict> <length> <thumb> <thumb>
+ [ /_objdef 3 -1 roll /type /stream /OBJ pdfmark
+% Stack: <dict> <length> <thumb>
+ dup dup 5 -1 roll
+% Stack: <length> <thumb> <thumb> <thumb> <dict>
+ THB_DistillerPatch
+% Stack: <length> <thumb> <thumb> <thumb> <dict> <filter/false>
+ [ 4 -2 roll /PUT pdfmark
+% Stack: <length> <thumb> <thumb> <filter/false>
+ [ 3 1 roll currentfile${filter}
+% Stack: <length> <thumb> [ <thumb> <filter/false> <file>
+ 6 -1 roll string $read pop
+% Stack: <thumb> [ <thumb> <filter/false> <string>
+ exch dup type /booleantype ne {true} if {filter} if
+% Stack: <thumb> [ <thumb> <file>
+ /PUT pdfmark
+% Stack: <thumb>
+ [ exch /CLOSE pdfmark
+ } bind def
+}{
+% Syntax: <thumb object> thisTHB -
+ /thisTHB {pop} bind def
+ 2 dict begin
+% Syntax: <page object> <thumb object> pagethumb -
+ /pagethumb {pop pop} bind def
+% Syntax: <thumb object> <stream length>
+% <mark> <key value pairs> streamobj -
+ /streamobj {
+ cleartomark exch pop
+ string currentfile${filter}
+ exch $read pop pop
+ } bind def
+} ifelse
+END_HEAD
+ $PS_Header =~ s/%[^\r\n]*[\r\n]+//gm;
+ print DTA_PM $PS_Header;
+ print DTA_PM <<"END_DTA";
+
+% adding thumbnails to pages
+END_DTA
+
+ for ($i=0; $i<$maxpagethumb; $i++)
+ {
+ print DTA_PM <<"END_DTA";
+{Page$thumbpageno[$i]} {THB$thumbpageno[$i]} pagethumb
+END_DTA
+ }
+ print DTA_PM "\n% thumbnail data\n";
+ }
+
+ for ($i=0; $i<$maxthumb; $i++)
+ {
+ # rgb object
+ if ($thumbrgbobj[$i])
+ {
+ # find the same rgb object
+ my $j;
+ for ($j=0; $j<$i; $j++)
+ {
+ next unless $thumbrgbobj[$j];
+ next unless $objtext[$thumbrgbobj[$j]] eq
+ $objtext[$thumbrgbobj[$i]];
+ next unless $objstream[$thumbrgbobj[$j]] eq
+ $objstream[$thumbrgbobj[$i]];
+ last;
+ }
+ if ($j==$i) # not found
+ {
+ if ($mode_pdftex)
+ {
+ {
+ my $rgbstream = pdftexstream($objstream[$thumbrgbobj[$i]]);
+ my $dict = $objtext[$thumbrgbobj[$i]];
+ if ($::opt_compress == 10)
+ {
+ chomp($dict);
+ $dict =~ s/\n([^\/])/^^J\n$1/mg;
+ $dict =~ s/[ ]+\//\//mg;
+ }
+ else
+ {
+ $dict =~ s/\n/^^J\n/mg;
+ }
+ print DTA_PT <<"END_DTA";
+\\immediate\\pdfobj{<<$J
+$dict>>$J
+stream^^J
+$rgbstream
+endstream}
+\\DefRGB{$i}
+END_DTA
+ }
+ }
+ if ($mode_pdfmark)
+ {
+ {
+ my $rgbstream = pdfmarkstream($objstream[$thumbrgbobj[$i]]);
+ my $rgblength = $thumbrgblength[$i];
+ my $dict = $objtext[$thumbrgbobj[$i]];
+ $dict =~ s/\/Length\s+\d+\s*//;
+ $dict =~ s/^\s+//;
+ $dict =~ s/\s+$//;
+ print DTA_PM <<"END_DTA";
+{RGB_$i} $rgblength $dictbegin
+$dict
+streamobj
+$rgbstream
+END_DTA
+ }
+ }
+ }
+ else # $j with same rgb obj
+ {
+ $objtext[$thumbobj[$i]] =~
+ s/\\the\\pdflastobj/\\UseRGB{$j}/;
+ print "* Reuses RGB object $j for $i\n" if $::opt_debug;
+ }
+ }
+
+ # thumb object
+ if ($mode_pdftex)
+ {
+ {
+ my $dict = $objtext[$thumbobj[$i]];
+ if ($::opt_compress == 10)
+ {
+ chomp($dict);
+ $dict =~ s/\n([^\/])/^^J\n$1/mg;
+ $dict =~ s/[ ]+\//\//mg;
+ $dict =~ s/[ ]+\[/\[/mg;
+ }
+ else
+ {
+ $dict =~ s/\n/^^J\n/mg;
+ }
+ my $stream = pdftexstream($objstream[$thumbobj[$i]]);
+ print DTA_PT <<"END_DTA";
+\\immediate\\pdfobj{<<$J
+$dict>>$J
+stream^^J
+$stream
+endstream}
+\\DefThumb{$thumbpageno[$i]}
+END_DTA
+ }
+ }
+ if ($mode_pdfmark)
+ {
+ {
+ my $stream = pdfmarkstream($objstream[$thumbobj[$i]]);
+ my $length = $thumblength[$i];
+ my $dict = $objtext[$thumbobj[$i]];
+ $dict =~ s/\\the\\pdflastobj\\\s*\d+\s*R/{RGB_$i}/;
+ $dict =~ s/\\UseRGB{(\d+)}\\\s*\d+\s*R/{RGB_$1}/;
+ $dict =~ s/\/Length\s+\d+\s*//;
+ $dict =~ s/^\s+//;
+ $dict =~ s/\s+$//;
+ my $thismarker = "";
+ $thismarker = "_", if $i >= $maxpagethumb;
+ print DTA_PM <<"END_DTA";
+{THB$thismarker$thumbpageno[$i]} $length $dictbegin
+$dict
+streamobj
+$stream
+END_DTA
+ }
+ }
+ }
+
+ if ($mode_pdftex)
+ {
+ print DTA_PT "\\endinput\n";
+ close(DTA_PT);
+ }
+ if ($mode_pdfmark)
+ {
+ print DTA_PM <<"END_DTA";
+end
+% end of thumbnail data file
+END_DTA
+ close(DTA_PM);
+ }
+}
+
+sub pdftexstream
+{
+ my $str = "";
+ my $mod = 0;
+ foreach (split(//, $_[0]))
+ {
+ my $num = ord($_);
+ if ($num == 13) { $str .= '\\/'; }
+ elsif ($num < 32) { $str .= '^^' . chr($num + 64); }
+ elsif ($num == 32) { $str .= '\\~'; } # space
+ elsif ($num == 37) { $str .= '\\%'; } # percent
+ elsif ($num == 92) { $str .= '\\\\'; } # backslash
+ elsif ($num == 94) { $str .= '\\+'; } # caret
+ elsif ($num == 123) { $str .= '\\{'; } # curly brace left
+ elsif ($num == 125) { $str .= '\\}'; } # curly brace right
+ else { $str .= $_; }
+ $mod++;
+ if ($mod == 26)
+ {
+ $mod = 0;
+ $str .= "\n";
+ }
+ }
+ chomp $str;
+ return $str;
+}
+
+sub pdfmarkstream
+{
+ my $str;
+ if ($::opt_level2)
+ {
+ my $s = $_[0];
+ my $len = length($s);
+ $str = "";
+ my $i;
+ for ($i=0; $i<$len-4; $i+=4)
+ {
+ $_ = ASCII85Encode(substr($s, $i, 4));
+ s/!!!!!/z/;
+ $str .= $_;
+ }
+ my $r = $len % 4;
+ if ($r)
+ {
+ $_ = substr($s, $i, $r) . "\000\000\000";
+ $_ = ASCII85Encode(substr($_, 0, 4));
+ $str .= substr($_, 0, $r+1);
+ }
+ $str =~ s/(.{60})/$1\n/g;
+ chomp($str);
+ $str .= "~>";
+ }
+ else
+ {
+ $str = uc(unpack('H*', $_[0]));
+ $str =~ s/(.{60})/$1\n/g;
+ chomp($str);
+ }
+ return $str;
+}
+
+sub ASCII85Encode
+{
+ my $val = unpack("N", $_[0]);
+ my @c;
+ $c[4] = $val % 85 + 33;
+ $val = int($val/85);
+ $c[3] = $val % 85 + 33;
+ $val = int($val/85);
+ $c[2] = $val % 85 + 33;
+ $val = int($val/85);
+ $c[1] = $val % 85 + 33;
+ $c[0] = int($val/85) + 33;
+ return pack("C*", @c);
+}
+
+sub setsignals {
+ my $func = $_[0];
+ $SIG{'HUP'} = $func unless $Win;
+ $SIG{'INT'} = $func;
+ $SIG{'QUIT'} = $func;
+ $SIG{'TERM'} = $func;
+}
+
+sub clean {
+ if ($::opt_clean) {
+ print "*** clear temp files ***\n" unless $::opt_quiet;
+ foreach (@cleanlist) {
+ unlink;
+ }
+ }
+}
+
+sub cleanup {
+ print "\n" unless $::opt_quiet;
+ clean();
+ exit 1;
+}
+
+sub gscleanup {
+ print "\n" unless $::opt_quiet;
+ clean();
+ close(::GSKID) if $gskidrunning;
+ foreach (glob("$thumbprefix*.png")) {
+ unlink;
+ }
+ exit 1;
+}
+
+clean();
+
+print "*** ready. ***\n" unless $::opt_quiet;
+
+__END__
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 19:58:42 +0000