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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) 1999-2012 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 $prj = 'thumbpdf';
my $version = "3.15";
my $date = "2012/04/18";
my $author = "Heiko Oberdiek";
my $copyright = "Copyright (c) 1999-2012 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.
# 2007/11/07 v3.9:
# * Deprecation warning of perl 5.8.8 fixed.
# 2008/04/16 v3.10
# 2010/07/07 v3.11
# * \input is used with file name extension for "thumbpdf.tex".
# 2011/08/10 v3.13
# * Use gswin64c in Windows with 64 bits.
# 2012/04/09 v3.14
# 2012/04/18 v3.15
# * Option --version 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 $^O =~ /os2/i;
if ($^O =~ /mswin32c/i) {
# http://perldoc.perl.org/perlport.html#DOS-and-Derivatives
use Config;
$GS = "gswin32c";
$GS = "gswin64c" if $Config{'archname'} =~ /mswin32-x64/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.tex";
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_version = 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>$pdfmarkext' (pdfmark)
Options: (defaults:)
--help print usage
--version print version number
--(no)quiet suppress messages ($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])
--gscmd <name> call of ghostscript ($GS)
--antialias <num1>[num2] anti-aliasing, 0 = disable, 4 = max ($::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 <password> 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!",
"version!",
"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 $usage;
if ($::opt_version) {
print "$prj $date v$version\n";
exit(0);
}
@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 (!@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__