JezK
Edit File: epstopdf
#!/usr/bin/perl # Debian required shebang above # Original shebang below # #!/usr/bin/env perl # $Id: epstopdf.pl 64317 2022-09-08 01:25:27Z karl $ # (Copyright lines below.) # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # 3. The name of the author may not be used to endorse or promote # products derived from this software without specific prior written # permission. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE # DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, # INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. # ---------------------------------------------------------------- # This is a script to transform an EPS file to PDF. Theoretically, any # Level 2 PS interpreter should work, although in practice using # Ghostscript is near-universal. Many more details below. # # One thing not supported is the case of # "%%BoundingBox: (atend)" when input is not seekable (e.g., from a pipe), # # emacs-page # my $ver = "2.30"; # 2022/09/05 v2.30 (Siep Kroonenberg) # * still use gswin32c if gswin64c.exe not on PATH. # 2022/08/29 v2.29 (Karl Berry) # * use gswin64c.exe on 64-bit Windows. # 2018/09/17 v2.28 (Karl Berry) # * -dCompatibilityLevel=1.5 by default, since gs9.25 switched to 1.7. # 2017/09/14 v2.27 (Karl Berry) # * extract value from --gsopt with $3 not $2 (extra regexp group # added previously), and check it with ^(...)$ so anchors apply to all. # (report to Karl from Yannick Berker, 7 Sep 2017 14:07:09.) # 2017/01/07 v2.26 (Norbert Preining, Karl Berry) # * allow cmdline of infile outfile.pdf. # * explicitly allow -o as abbreviation for --outfile, # to guard against future --options. (Also --output.) # 2016/06/30 v2.25 (Norbert Preining, Karl Berry) # * don't set (default) device until after restricted check. # * a few more debugging lines. # 2016/05/29 v2.24 (Karl Berry) # * new option --gray; patch from William Bader, # tex-k mail 9 Feb 2016 19:37:08. # * disallow --device completely in restricted mode, # to avoid maintenance of device list. # tex-live mail 10 Feb 2016 10:36:26. # 2015/01/22 v2.23 (Karl Berry) # * use # instead of = to placate msys; report from KUROKI Yusuke, # tex-k mail 20 Jan 2015 12:40:16. # 2014/06/18 v2.22 (Karl Berry) # * escape % in $outputfilename; report from William Fischer, # tex-k mail 16 Jun 2014 18:45:12. # 2014/01/17 v2.21 (Karl Berry) # * tweaks to help message, per reports from Knuth. # 2013/09/28 v2.20 (Heiko Oberdiek, and (a little) Karl Berry) # * New command line argument --(no)safer which allows setting # -dNOSAFER instead of -dSAFER (only for non-restricted). # * New command line argument --pdfsettings for # Ghostscript's -dPDFSETTINGS. # * New command line argument --(no)quiet. # * New command line argument --device for specifying a differnt # Ghostscript device (limited set of devices for restricted mode). # * New command line arguments --gsopts and --gsopt for adding # Ghostscript options. # * Full support of ghostscript's option -r, DPIxDPI added. # * Support for DOS EPS binary files (TN 5002) added. # * Removes PJL commands at start of file. # 2013/05/12 v2.19 (Karl Berry) # * explain option naming conventions (= defaults for Getopt::Long). # 2012/05/22 v2.18 (Karl Berry) # * use /usr/bin/env, since Ruby has apparently required #! for years, # and we rely on it for our other scripts, so why not. # (tex-k mail from Jean Krohn, 2 Aug 2010 15:57:54, # per http://osdir.com/ml/lang.ruby.general/2002-06/msg01388.html # and ruby-bugs:PR#315). # 2012/05/12 v2.17 (Karl Berry) # * uselessly placate -w. Debian bug 672281. # 2010/05/09 v2.16 (Karl Berry) # * make --nogs dump edited PostScript to stdout by default # (report from Reinhard Kotucha). # 2010/03/19 v2.15 (Karl Berry) # * let --outfile override --filter again. # * recognize MSWin64 as well as MSWin32, just in case. # 2010/03/08 v2.14 (Manuel P\'egouri\'e-Gonnard) # * In restricted mode, forbid --gscmd (all platforms) and call GS with full # path relative to self location (Windows). # 2010/02/26 v2.13 (Karl Berry) # * New release. # 2010/02/23 (Manuel P\'egouri\'e-Gonnard) # * Use kpsewhich for filename validation in restricted mode, both input and # output. Requires kpathsea 5.1.0 (TL2010), rejects the name with earlier # versions of kpsewhich. # * Call external programs with full path on win32 in order to avoid obvious # attacks with rogue versions of these programs in the current directory. # 2009/11/27 v2.12 (Karl Berry) # * Make --filter work again # 2009/11/25 (Manuel P\'egouri\'e-Gonnard) # * Better extension detection, suggested by A. Cherepanov. # 2009/10/18 (Manuel P\'egouri\'e-Gonnard) # * Better argument validation (Alexander Cherepanov). # * Use list form of pipe open() (resp. system()) to prevent injection. # Since Perl's fork() emulation doesn't work on Windows with Perl 5.8.8 from # TeX Live 2009, use a temporary file instead of a pipe on Windows. # 2009/10/14 (Manuel P\'egouri\'e-Gonnard) # * Added restricted mode. # 2009/09/27 v2.11 (Karl Berry) # * Fixed two bugs in the (atend) handling code (Martin von Gagern) # * Improved handling of CR line ending (Martin von Gagern) # * More error checking # * --version option # * Create source repository in TeX Live # 2009/07/17 v2.9.11gw # * Added -dSAFER to default gs options # TL2009 wants to use a restricted variant of -shell-escape, # allowing epstopdf to run. However without -dSAFER Ghostscript # allows writing to files (other than given in -sOutputFile) # and running commands (through Ghostscript pipe's language feature). # 2009/05/09 v2.9.10gw # * Changed cygwin name for ghostscript to gs # 2008/08/26 v2.9.9gw # * Switch to embed fonts (default=yes) (J.P. Chretien) # * turned no AutoRotatePages into an option (D. Kreil) (default = None) # * Added resolution switch (D. Kreil) # * Added BSD-style license # 2007/07/18 v2.9.8gw # 2007/05/18 v.2.9.7gw (Gerben Wierda) # * Merged both supplied 2.9.6 versions # 2007/05/15 v2.9.6tp (Theo Papadopoulo) # * Simplified the (atend) support # 2007/01/24 v2.9.6sw (Staszek Wawrykiewicz) # * patched to work also on Windows # 2005/10/06 v2.9.5gw (Gerben Wierda) # * Fixed a horrendous bug in the (atend) handling code # 2005/10/06 v2.9.4gw (Gerben Wierda) # * This has become the official version for now # 2005/10/01 v2.9.3draft (Gerben Wierda) # * Quote OutFilename # 2005/09/29 v2.9.2draft (Gerben Wierda) # * Quote OutFilename # 2004/03/17 v2.9.1draft (Gerben Wierda) # * No autorotate page # 2003/04/22 v2.9draft (Gerben Wierda) # * Fixed bug where with cr-eol files everything up to the first %! # * in the first 2048 bytes was gobbled (double ugh!) # 2002/02/21 v2.8draft (Gerben Wierda) # * Fixed bug where last line of buffer was not copied out (ugh!) # 2002/02/18 v2.8draft (Gerben Wierda) # * Handle different eol styles transparantly # * Applied fix from Peder Axensten for Freehand bug # 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. # 2000/11/05 v2.6 (Heiko Oberdiek) # * %%HiresBoundingBox corrected to %%HiResBoundingBox # 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;'; # # Thomas Esser, Sept. 1998: change initial lines to find # perl along $PATH rather than guessing a fixed location. The above # construction should work with most shells. # # Originally by Sebastian Rahtz, for Elsevier Science # with extra tricks from Hans Hagen's texutil and many more. ### emacs-page ### program identification my $program = "epstopdf"; my $ident = '($Id: epstopdf.pl 64317 2022-09-08 01:25:27Z karl $)' . " $ver"; my $copyright = <<END_COPYRIGHT ; Copyright 2009-2022 Karl Berry et al. Copyright 2002-2009 Gerben Wierda et al. Copyright 1998-2001 Sebastian Rahtz et al. License RBSD: Revised BSD <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. END_COPYRIGHT my $title = "$program $ident\n"; my $on_windows = $^O =~ /^(MSWin|msys$)/; my $on_windows_or_cygwin = $on_windows || $^O eq "cygwin"; ### ghostscript command name my $GS = "gs"; if ($on_windows) { $GS = "gswin32c"; if ($ENV{"PROCESSOR_ARCHITECTURE"} eq "AMD64" || $ENV{"PROCESSOR_ARCHITEW6432"} eq "AMD64") { # prefer gswin64c.exe if on search path. my @pdirs = split(/;/, $ENV{"PATH"}); foreach $d (@pdirs) { $d = substr ($d, 1, -1) if (substr ($d,1,1) eq '"'); if (-f $d . "/gswin64c.exe") { $GS = "gswin64c"; last; } } } } ### restricted mode my $restricted = 0; $restricted = 1 if $0 =~ /repstopdf/; ### default values my $default_device = 'pdfwrite'; ### options $::opt_autorotate = "None"; $::opt_compress = 1; $::opt_debug = 0; $::opt_device = ""; $::opt_embed = 1; $::opt_exact = 0; $::opt_filter = 0; $::opt_gray = 0; $::opt_gs = 1; $::opt_gscmd = ""; @::opt_gsopt = (); $::opt_help = 0; $::opt_hires = 0; $::opt_outfile = ""; $::opt_pdfsettings = ""; $::opt_res = ''; $::opt_restricted = 0; $::opt_safer = 1; $::opt_quiet = 1; $::opt_version = 0; sub gsopts { push (@::opt_gsopt, split (' ', $_[1])); } # known-safe Ghostscript options and values. my %optcheck = qw< AlignToPixels 0|1 AntiAliasColorImages true|false AntiAliasGrayImages true|false AntiAliasMonoImages true|false ASCII85EncodePages true|false AutoFilterColorImages true|false AutoFilterGrayImages true|false AutoPositionEPSFiles true|false AutoRotatePages /(None|All|PageByPage) BATCH true Binding /(Left|Right) CannotEmbedFontPolicy /(OK|Warning|Error) ColorConversionStrategy /(LeaveColorUnchanged|UseDeviceIndependentColor|UseDeviceIndependendColorForImages|sRGB|CMYK) ColorImageDepth -1|1|2|4|8 ColorImageDownsampleThreshold 10(.0*)?|\d(.\d*)|\.\d+ ColorImageDownsampleType /(Average|Bicubic|Subsample|None) ColorImageFilter /(DCTEncode|FlateEncode|JPXEncode) ColorImageResolution \d+ COLORSCREEN true|0|false CompatibilityLevel 1\.[0-7] CompressFonts true|false CompressPages true|false ConvertCMYKImagesToRGB true|false ConvertImagesToIndexed true|false DefaultRenderingIntent /(Default|Perceptual|Saturation|AbsoluteColorimetric|RelativeColorimetric) DetectBlends true|false DetectDuplicateImages true|false DITHERPPI \d+ DOINTERPOLATE true DoThumbnails true|false DownsampleColorImages true|false DownsampleGrayImages true|false DownsampleMonoImages true|false EmbedAllFonts true|false EmitDSCWarnings true|false EncodeColorImages true|false EncodeGrayImages true|false EncodeMonoImages true|false EndPage -?\d+ FIXEDRESOLUTION true GraphicsAlphaBits 1|2|4 GrayImageDepth -1|1|2|4|8 GrayImageDownsampleThreshold \d+\.?\d*|\.\d+ GrayImageDownsampleType /(Average|Bicubic) GrayImageFilter /(DCTEncode|FlateEncode|JPXEncode) GrayImageResolution \d+ GridFitTT 0|1|2|3 HaveTransparency true|false HaveTrueTypes true|false ImageMemory \d+ LockDistillerParams true|false LZWEncodePages true|false MaxSubsetPct 100|[1-9][0-9]? MaxClipPathSize \d+ MaxInlineImageSize \d+ MaxShadingBitmapSize \d+ MonoImageDepth -1|1|2|4|8 MonoImageDownsampleThreshold \d+\.?\d*|\.\d+ MonoImageDownsampleType /(Average|Bicubic|Subsample|None) MonoImageFilter /(CCITTFaxEncode|FlateEncode|RunLengthEncode) MonoImageResolution \d+ NOCIE true NODISPLAY true NOEPS true NOINTERPOLATE true NOPSICC true NOSUBSTDEVICECOLORS true|false NOTRANSPARENCY true OPM 0|1 Optimize true|false ParseDSCComments true|false ParseDSCCommentsForDocInfo true|false PreserveCopyPage true|false PreserveEPSInfo true|false PreserveHalftoneInfo true|false PreserveOPIComments true|false PreserveOverprintSettings true|false StartPage -?\d+ PatternImagemask true|false PDFSETTINGS /(screen|ebook|printer|prepress|default) PDFX true|false PreserveDeviceN true|false PreserveSeparation true|false QUIET true SHORTERRORS true SubsetFonts true|false TextAlphaBits 1|2|4 TransferFunctionInfo /(Preserve|Remove|Apply) UCRandBGInfo /(Preserve|Remove) UseCIEColor true|false UseFlateCompression true|false UsePrologue true|false >; # In any case not suitable for restricted: # -dDOPS ### usage my @bool = ("false", "true"); my $resmsg = $::opt_res ? $::opt_res : "[use gs default]"; my $rotmsg = $::opt_autorotate ? $::opt_autorotate : "[use gs default]"; my $usage = <<"END_OF_USAGE"; ${title}Usage: $program [OPTION]... [EPSFILE [PDFFILE.pdf]] Convert an EPS file to PDF (or other formats), by default using Ghostscript. By default, the output name is the input name with any extension replaced by ".pdf". An output name ending with .pdf can also be given as a second argument on the command line, or the --outfile (-o) option can be used with any name. The output is PDF 1.5 by default; use --gsopt=-dCompatibilityLevel=1.7 (for example) to change this. The resulting output is guaranteed to start at the 0,0 coordinate, and sets a page size exactly corresponding to the BoundingBox. Thus, the result does not need any cropping, and the PDF MediaBox is correct. If the bounding box in the input is incorrect, of course there will be resulting problems. Options: --help display this help and exit --version display version information and exit -o, --outfile=FILE write result to FILE (default based on input name) --restricted use restricted mode (default: $bool[$restricted]) --(no)debug output debugging info (default: $bool[$::opt_debug]) --(no)exact scan ExactBoundingBox (default: $bool[$::opt_exact]) --(no)filter read standard input (default: $bool[$::opt_filter]) --(no)gs run ghostscript (default: $bool[$::opt_gs]) --(no)hires scan HiResBoundingBox (default: $bool[$::opt_hires]) Options for Ghostscript: --gscmd=VAL pipe output to VAL (default: $GS) --gsopt=VAL single option for gs (see below) --gsopts=VAL options for gs (see below) --autorotate=VAL set AutoRotatePages (default: $rotmsg) recognized VAL choices: None, All, PageByPage; for EPS files, PageByPage is equivalent to All. --(no)compress use compression (default: $bool[$::opt_compress]) --device=DEV use -sDEVICE=DEV (default: $default_device) --(no)embed embed fonts (default: $bool[$::opt_embed]) --(no)gray grayscale output (default: $bool[$::opt_gray]) --pdfsettings=VAL use -dPDFSETTINGS=/VAL (default is prepress if --embed, else empty); recognized VAL choices: screen, ebook, printer, prepress, default. --(no)quiet use -q (-dQUIET) (default: $bool[$::opt_quiet]) --res=DPI|DPIxDPI set image resolution (default: $resmsg) ignored if option --debug is set. --(no)safer use -d(NO)SAFER (default: $bool[$::opt_safer]) Examples all equivalently converting test.eps to test.pdf: \$ $program test.eps \$ $program test.eps test.pdf \$ cat test.eps | $program --filter >test.pdf \$ cat test.eps | $program -f -o=test.pdf Example for using HiResBoundingBox instead of BoundingBox: \$ $program --hires test.eps Example for producing epstopdf's attempt at corrected PostScript: \$ $program --nogs test.ps >testcorr.ps In all cases, you can add --debug (-d) to see more about what epstopdf is doing. More about the options for Ghostscript: Additional options to be used with gs can be specified with either or both of the two cumulative options --gsopts and --gsopt. --gsopts takes a single string of options, which is split at whitespace and each resulting word then added to the gs command line individually. --gsopt adds its argument as a single option to the gs command line. It can be used multiple times to specify options separately, and is necessary if an option or its value contains whitespace. In restricted mode, options are limited to those with names and values known to be safe. Some options taking booleans, integers or fixed names are allowed, those taking general strings are not. All options to epstopdf may start with either - or --, and may be unambiguously abbreviated. It is best to use the full option name in scripts to avoid possible collisions with new options in the future. When reporting bugs, please include an input file and all command line options so the problem can be reproduced. Report bugs to: tex-k\@tug.org epstopdf home page: <http://tug.org/epstopdf/> END_OF_USAGE ### process options use Getopt::Long; GetOptions ( "autorotate=s", # \ref{val_autorotate} "compress!", "debug!", "device=s", "embed!", "exact!", "gray!", "filter!", "gs!", "gscmd=s", # \ref{val_gscmd} "gsopt=s@", # \ref{val_gsopt} "gsopts=s" => \&gsopts, # \ref{val_gsopts} "help|h", "hires!", "outfile|output|o=s", # \ref{openout_any} "pdfsettings=s", "quiet", "res=s", "restricted", "safer!", "version", ) or die "Try $0 --help for more information\n"; ### disable --quiet if option --debug is given $::opt_quiet = 0 if $::opt_debug; ### restricted option $restricted = 1 if $::opt_restricted; ### 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 "$program: Error: @_ (try --help for more information)\n"; } sub warnerr { $restricted ? error(@_) : warning(@_); } ### debug messages debug "Restricted mode activated" if $restricted; ### safer external commands for Windows in restricted mode my $kpsewhich = 'kpsewhich'; if ($restricted && $on_windows) { use File::Basename; my $mydirname = dirname $0; # $mydirname is the location of the Perl script $kpsewhich = "$mydirname/../../../bin/win32/$kpsewhich"; $GS = "$mydirname/../../../tlpkg/tlgs/bin/$GS"; debug "restricted Windows gs: $GS"; } debug "kpsewhich command: $kpsewhich"; ### check if a name is "safe" according to kpse's open(in|out)_any # return true if name is ok, false otherwise sub safe_name { my ($mode, $name) = @_; my $option = ""; $option = '-safe-in-name' if $mode eq 'in'; $option = '-safe-out-name' if $mode eq 'out'; error "Unknown check mode in safe_name(): $mode" unless $option; my @args = ($kpsewhich, '-progname', 'repstopdf', $option, $name); my $bad = system {$args[0]} @args; return ! $bad; } ### help, version options. if ($::opt_help) { print $usage; exit 0; } if ($::opt_version) { print $title; print $copyright; exit 0; } ### get input filename (\ref{openin_any} for validation) my $InputFilename = ""; if ($::opt_filter) { @ARGV == 0 or errorUsage "Input file cannot be used with filter option"; debug "Filtering: will read standard input"; } else { # not filtering. @ARGV > 0 or errorUsage "Input filename missing"; # allow infile outfile.pdf. if (@ARGV == 2) { if ($::opt_outfile) { errorUsage ("Multiple output specifications: second arg=$ARGV[1]," . " --outfile=$::opt_outfile"); } if ($ARGV[1] !~ m/\.pdf$/i) { errorUsage "Output file argument requires .pdf extension: $ARGV[1]"; } # seems we can use it. $::opt_outfile = $ARGV[1]; debug "Output filename from argv:", $::opt_outfile; } @ARGV > 2 and errorUsage "Too many arguments: @ARGV"; $InputFilename = $ARGV[0]; debug "Input filename:", $InputFilename; } ### emacs-page ### building the gs invocation. ### option gscmd if ($::opt_gscmd) { if ($restricted) { # \label{val_gscmd} error "Option forbidden in restricted mode: --gscmd"; } else { debug "Switching from $GS to $::opt_gscmd"; $GS = $::opt_gscmd; } } ### start building GS command line for the pipe my @GS = ($GS); push @GS, '-q' if $::opt_quiet; push @GS, $::opt_safer ? '-dSAFER' : '-dNOSAFER'; push @GS, '-dNOPAUSE'; push @GS, '-dBATCH'; push @GS, '-dCompatibilityLevel=1.5'; ### option device if ($::opt_device) { if ($restricted) { error "Option forbidden in restricted mode: --device"; } else { debug "Switching from $default_device to $::opt_device"; } } else { $::opt_device = $default_device; } push @GS, "-sDEVICE=$::opt_device"; ### option outfile my $OutputFilename = $::opt_outfile; if (! $OutputFilename) { if ($::opt_gs) { if ($::opt_filter) { debug "Filtering: will write standard output"; $OutputFilename = "-"; } else { # Ghostscript, no filter: replace input extension with .pdf. $OutputFilename = $InputFilename; my $ds = $on_windows_or_cygwin ? '\\/' : '/'; $OutputFilename =~ s/\.[^\.$ds]*$//; $OutputFilename .= ".pdf"; } } else { debug "No Ghostscript: will write standard output"; $OutputFilename = "-"; } } $OutputFilename =~ s/%/%%/g; # we will do the escaping for gs debug "Output filename:", $OutputFilename; push @GS, "-sOutputFile=$OutputFilename"; ### options compress, embed, res, autorotate $::opt_pdfsettings = 'prepress' if $::opt_embed and not $::opt_pdfsettings; if ($::opt_pdfsettings && $::opt_pdfsettings !~ s/^\/?(screen|ebook|printer|prepress|default)$/$1/) { warnerr "Invalid value for --pdfsettings: $::opt_pdfsettings"; $::opt_pdfsettings = ''; } # use # instead of = to avoid mingw path munging. push (@GS, "-dPDFSETTINGS#/$::opt_pdfsettings") if $::opt_pdfsettings; push @GS, qw[ -dMaxSubsetPct=100 -dSubsetFonts=true -dEmbedAllFonts=true ] if $::opt_embed; push @GS, '-dUseFlateCompression=false' unless $::opt_compress; push @GS, qw(-sColorConversionStrategy=Gray -dProcessColorModel=/DeviceGray) if $::opt_gray; if ($::opt_res and not $::opt_res =~ /^(\d+(x\d+)?)$/) { warnerr "Invalid resolution: $opt_res"; $::opt_res = ''; } push @GS, "-r$::opt_res" if $::opt_res; $resmsg = $::opt_res ? $::opt_res : "[use gs default]"; # \label{val_autorotate} if ($::opt_autorotate and not $::opt_autorotate =~ /^(None|All|PageByPage)$/) { warnerr "Invalid value for --autorotate: $::opt_autorotate' " . "(use 'All', 'None' or 'PageByPage'"; $::opt_autorotate = ''; } # use # instead of = to avoid mingw path munging. push (@GS, "-dAutoRotatePages#/$::opt_autorotate") if $::opt_autorotate; $rotmsg = $::opt_autorotate ? $::opt_autorotate : "[use gs default]"; foreach my $gsopt (@::opt_gsopt) { if ($restricted) { my $ok = 0; if ($gsopt =~ /^-[dD]([A-Za-z0-9]+)(=(.*))?$/) { my $name = $1; my $value = $3; $value = 'true' if not defined $value; if ($optcheck{$name} and $value =~ /^($optcheck{$name})$/) { $ok = 1; } else { warnerr "Option forbidden in restricted mode: --gsopt $gsopt"; $gsopt = ''; } } if (not $ok) { warnerr "Option forbidden in restricted mode: --gsopt $gsopt"; $gsopt = ''; } } push @GS, $gsopt if $gsopt; } ### 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:", $BBName; ### validate input file name in restricted mode \label{openin_any} if ($restricted and not $::opt_filter and not safe_name('in', $InputFilename)) { error "Input filename '$InputFilename' not allowed in restricted mode."; } ### validate output file name in restricted mode \label{openout_any} if ($restricted and not safe_name('out', $OutputFilename)) { error "Output filename '$OutputFilename' not allowed in restricted mode."; } ### option gs if ($::opt_gs) { debug "Ghostscript command:", $GS; debug "Compression:", ($::opt_compress) ? "on" : "off"; debug "Embedding:", ($::opt_embed) ? "on" : "off"; debug "Grayscale:", ($::opt_gray) ? "on" : "off"; debug "PDFSettings:", $::opt_pdfsettings; debug "Resolution:", $resmsg; debug "Rotation:", $rotmsg; } ### emacs-page ### open input file if ($::opt_filter) { open(IN, '<-') || error("Cannot open stdin: $!"); } else { open(IN, '<', $InputFilename) || error("Cannot open $InputFilename: $!"); } binmode IN; ### open output file my $outname; # used in error message at end my $tmp_filename; # temporary file for windows my $OUT; # filehandle for output (GS pipe or temporary file) use File::Temp 'tempfile'; if ($::opt_gs) { if (! $on_windows_or_cygwin) { # list piped open works push @GS, qw(- -c quit); debug "Ghostscript pipe: @GS"; open($OUT, '|-', @GS) or error "Cannot open Ghostscript for piped input: @GS"; } else { # use a temporary file on Windows/Cygwin. ($OUT, $tmp_filename) = tempfile(UNLINK => 1); debug "Using temporary file '$tmp_filename'"; } $outname = $GS; } else { debug "No Ghostscript: opening $OutputFilename"; if ($OutputFilename eq "-") { $OUT = *STDOUT; } else { open($OUT, '>', $OutputFilename) || error ("Cannot write \"$OutputFilename\": $!"); $outname = $OutputFilename; } } binmode $OUT; # reading a cr-eol file on a lf-eol system makes it impossible to parse # the header and besides it will read the intire file into yor line by line # scalar. this is also true the other way around. ### emacs-page ### scan a block, try to determine eol style my $buf; my $buflen; my @bufarray; my $inputpos; my $maxpos = -1; # We assume 2048 is big enough. my $EOLSCANBUFSIZE = 2048; # PJL my $UEL = "\x1B%-12345X"; my $PJL = '@PJL[^\r\n]*\r?\n'; $buflen = read(IN, $buf, $EOLSCANBUFSIZE); if ($buflen > 0) { my $crlfpos; my $lfpos; my $crpos; $inputpos = 0; # TN 5002 "Encapsulated PostScript File Format Specification" # specifies a DOS EPS binary file format for including a # device-specific screen preview. # # DOS EPS Binary File Header (30 Bytes): # * Bytes 0-3: 0xC5D0D3C6 # * Bytes 4-7: Offset of PostScript section # * Bytes 8-11: Length of PostScript section # * ... # * Bytes 28-29: XOR checksum of bytes 0-27 or 0xFFFF if ($buflen > 30 and $buf =~ /^\xC5\xD0\xD3\xC6/) { debug "DOS EPS binary file header found"; my $header = substr($buf, 0, 30); my ($offset_ps, $length_ps, $checksum) = unpack("x[V]VVx[V4]n", $header); debug " PS offset: $offset_ps"; debug " PS length: $length_ps"; $maxpos = $offset_ps + $length_ps; # validate checksum if ($checksum == 0xFFFF) { debug " No checksum"; } else { debug " checksum: $checksum"; my $cs = 0; map { $cs ^= $_ } unpack('n14', $header); if ($cs != $checksum) { warning "Wrong checksum of DOS EPS binary header"; } } # go to the start of the PostScript section and refill buffer if ($::opt_filter) { if ($offset_ps <= $buflen) { $buf = substr($buf, $offset_ps); $buflen = $buflen - $offset_ps; $inputpos = $offset_ps; my $len = read(IN, $buf, $offset_ps, $buflen); $buflen += $len; } else { $inputpos = $buflen; $buflen = 0; my $skip = $offset_ps - $inputpos; while ($skip > 0) { $buflen = read(IN, $buf, $skip > $EOLSCANBUFSIZE ? $EOLSCANBUFSIZE : $skip); $buflen > 0 or error "Unexpected end of input stream"; $inputpos += $buflen; $skip = $offset_ps - $inputpos; } $buflen = read(IN, $buf, $EOLSCANBUFSIZE); $buflen > 0 or error "Unexpected end of input stream"; } } else { seek(IN, $offset_ps, 0) || error "Cannot seek to PostScript section"; $inputpos = $offset_ps; $buflen = read(IN, $buf, $EOLSCANBUFSIZE); $buflen > 0 or error "Reading PostScript section failed"; } } elsif ($buf =~ s/^($UEL($PJL)+)//) { $inputpos = length($1); debug "PJL commands removed at start of file: $inputpos bytes"; } else { # remove binary junk before header # if there is no header, we assume the file starts with ascii style and # we look for a eol style anyway, to prevent possible loading of the # entire file if ($buf =~ /%!/) { # throw away binary junk before %! $buf =~ s/(.*?)%!/%!/o; $inputpos = length($1); debug "Binary junk at start of file: $inputpos byte(s)"; } } $lfpos = index($buf, "\n"); $crpos = index($buf, "\r"); $crlfpos = index($buf, "\r\n"); if ($crpos > 0 and ($lfpos == -1 or $lfpos > $crpos+1)) { # The first eol was a cr and it was not immediately followed by a lf $/ = "\r"; debug "The first eol character was a CR ($crpos) and not immediately followed by a LF ($lfpos)"; } # Now we have set the correct eol-character. Get one more line and add # it to our buffer. This will make the buffer contain an entire line # at the end. Then split the buffer in an array. We will draw lines from # that array until it is empty, then move again back to <IN> $buf .= <IN> unless eof(IN); $buflen = length($buf); # In case of DOS EPS binary files respect end of PostScript section. if ($maxpos> 0 and $inputpos + $buflen > $maxpos) { $buflen = $maxpos - $inputpos; $buflen > 0 or error "Internal error"; $buf = substr($buf, 0, $buflen); } # Some extra magic is needed here: if we set $/ to \r, Perl's re engine # still thinks eol is \n in regular expressions (not very nice) so we # cannot split on ^, but have to split on a look-behind for \r. if ($/ eq "\r") { @bufarray = split(/(?<=\r)/ms, $buf); # split after \r } else { @bufarray = split(/^/ms, $buf); } } ### getline sub getline { if ($#bufarray >= 0) { $_ = shift(@bufarray); } elsif ($maxpos > 0 and $inputpos >= $maxpos) { $_ = undef; } else { $_ = <IN>; if ($maxpos > 0) { my $skip = $maxpos - $inputpos - length($_); if ($skip < 0) { $_ = substr($_, 0, $skip); } } } $inputpos += length($_) if defined $_; return defined($_); } ### scan first line my $header = 0; getline(); 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 $height$/"; print $OUT "<< /PageSize [$width $height] >> setpagedevice$/"; print $OUT "gsave $xoffset $yoffset translate$/"; } ### emacs-page ### scan header if ($header) { HEADER: while (getline()) { ### Fix for freehand bug ### by Peder Axensten next HEADER if(!/\S/); ### end of header if (!/^%/ or /^%%EndComments/) { print $OUT $_; last; } ### BoundingBox with values if (/^$BBName$BBValues/o) { 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 = $inputpos; debug "Current file position:", $pos; # looking for %%BoundingBox while (getline()) { # skip over included documents my $nestDepth = 0; $nestDepth++ if /^%%BeginDocument/; $nestDepth-- if /^%%EndDocument/; if ($nestDepth == 0 && /^$BBName$BBValues/o) { CorrectBoundingBox $1, $2, $3, $4; $BBCorrected = 1; last; } } # go back seek(IN, $pos, 0) or error "Cannot go back to line \"$BBName (atend)\""; $inputpos = $pos; @bufarray = (); last; } # print header line print $OUT $_; } } ### print rest of file while (getline()) { print $OUT $_; } ### emacs-page ### close files close(IN); print $OUT "$/grestore$/" if $BBCorrected; close($OUT); ### actually run GS if we were writing to a temporary file if (defined $tmp_filename) { push @GS, $tmp_filename; push @GS, qw(-c quit); debug "Ghostscript command: @GS"; system @GS; } # if ghostscript exited badly, we should too. if ($? & 127) { error(sprintf "Writing to $outname failed, signal %d\n", $? & 127); } elsif ($? != 0) { error(sprintf "Writing to $outname failed, error code %d\n", $? >> 8); } warning "BoundingBox not found" unless $BBCorrected; debug "Done."; # vim: ts=8 sw=2 expandtab: