summaryrefslogtreecommitdiff
path: root/Master/bin/i386-freebsd/pdfcrop
blob: c7d2319af7ab4bfdf99369ca99b8bbd1021106ff (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}' && eval 'exec perl -S $0 $argv:q'
  if 0;
use strict;
$^W=1; # turn warning on
#
# pdfcrop.pl
#
# Copyright (C) 2002, 2004 Heiko Oberdiek.
#
# This program may be distributed and/or modified under the
# conditions of the LaTeX Project Public License, either version 1.2
# of this license or (at your option) any later version.
# The latest version of this license is in
#   http://www.latex-project.org/lppl.txt
# and version 1.2 or later is part of all distributions of LaTeX
# version 1999/12/01 or later.
#
# See file "readme.txt" for a list of files that belong to this project.
#
# This file "pdfcrop.pl" may be renamed to "pdfcrop"
# for installation purposes.
#
my $file        = "pdfcrop.pl";
my $program     = uc($&) if $file =~ /^\w+/;
my $version     = "1.5";
my $date        = "2004/06/24";
my $author      = "Heiko Oberdiek";
my $copyright   = "Copyright (c) 2002, 2004 by $author.";
#
# Reqirements: Perl5, Ghostscript
# History:
#   2002/10/30 v1.0: First release.
#   2002/10/30 v1.1: Option --hires added.
#   2002/11/04 v1.2: "nul" instead of "/dev/null" for windows.
#   2002/11/23 v1.3: Use of File::Spec module's "devnull" call.
#   2002/11/29 v1.4: Option --papersize added.
#   2004/06/24 v1.5: Clear map file entries so that pdfTeX
#                    does not touch the fonts.
#

### program identification
my $title = "$program $version, $date - $copyright\n";

### error strings
my $Error = "!!! Error:"; # error prefix

### string constants for Ghostscript run
# get Ghostscript command name
my $GS = "gs";
$GS = "gs386"    if $^O =~ /dos/i;
$GS = "gsos2"    if $^O =~ /os2/i;
$GS = "gswin32c" if $^O =~ /mswin32/i;
$GS = "gswin32c" if $^O =~ /cygwin/i;

# Windows detection (no SIGHUP)
my $Win = 0;
$Win = 1 if $^O =~ /mswin32/i;
$Win = 1 if $^O =~ /cygwin/i;

# "null" device
use File::Spec::Functions qw(devnull);
my $null = devnull();

### variables
my $inputfile   = "";
my $outputfile  = "";
my $tmp = "tmp-\L$program\E-$$";

### option variables
my @bool = ("false", "true");
$::opt_help       = 0;
$::opt_debug      = 0;
$::opt_verbose    = 0;
$::opt_gscmd      = $GS;
$::opt_pdftexcmd  = "pdftex";
$::opt_margins    = "0 0 0 0";
$::opt_clip       = 0;
$::opt_hires      = 0;
$::opt_papersize  = "";

my $usage = <<"END_OF_USAGE";
${title}Syntax:   \L$program\E [options] <input[.pdf]> [output file]
Function: Margins are calculated and removed for each page in the file.
Options:                                                    (defaults:)
  --help              print usage
  --(no)verbose       verbose printing                      ($bool[$::opt_verbose])
  --(no)debug         debug informations                    ($bool[$::opt_debug])
  --gscmd <name>      call of ghostscript                   ($::opt_gscmd)
  --pdftexcmd <name>  call of pdfTeX                        ($::opt_pdftexcmd)
  --margins "<left> <top> <right> <bottom>"                 ($::opt_margins)
                      add extra margins, unit is bp. If only one number is
                      given, then it is used for all margins, in the case
                      of two numbers they are also used for right and bottom.
  --(no)clip          clipping support, if margins are set  ($bool[$::opt_clip])
  --(no)hires         using `%%HiResBoundingBox'            ($bool[$::opt_hires])
                      instead of `%%BoundingBox'
  --papersize <foo>   parameter for gs's -sPAPERSIZE=<foo>,
                      use only with older gs versions <7.32 ($::opt_papersize)
Examples:
  \L$program\E --margins 10 input.pdf output.pdf
  \L$program\E --margins '5 10 5 20' --clip input.pdf output.pdf
END_OF_USAGE

### process options
my @OrgArgv = @ARGV;
use Getopt::Long;
GetOptions(
  "help!",
  "debug!",
  "verbose!",
  "gscmd=s",
  "pdftexcmd=s",
  "margins=s",
  "clip!",
  "hires!",
  "papersize=s",
) or die $usage;
!$::opt_help or die $usage;

$::opt_verbose = 1 if $::opt_debug;

@ARGV >= 1 or die $usage;

print $title;

@ARGV <= 2 or die "$Error Too many files!\n";

### input file
$inputfile = shift @ARGV;

if (! -f $inputfile) {
    if (-f "$inputfile.pdf") {
        $inputfile .= ".pdf";
    }
    else {
        die "$Error Input file `$inputfile' not found!\n";
    }
}

print "* Input file: $inputfile\n" if $::opt_debug;

### output file
if (@ARGV) {
    $outputfile = shift @ARGV;
}
else {
    $outputfile = $inputfile;
    $outputfile =~ s/\.pdf$//i;
    $outputfile .= "-crop.pdf";
}

print "* Output file: $outputfile\n" if $::opt_debug;

### margins
my ($llx, $lly, $urx, $ury) = (0, 0, 0, 0);
if ($::opt_margins =~
        /^\s*([\-\.\d]+)\s+([\-\.\d]+)\s+([\-\.\d]+)\s+([\-\.\d]+)\s*$/) {
    ($llx, $lly, $urx, $ury) = ($1, $2, $3, $4);
}
else {
    if ($::opt_margins =~ /^\s*([\-\.\d]+)\s+([\-\.\d]+)\s*$/) {
        ($llx, $lly, $urx, $ury) = ($1, $2, $1, $2);
    }
    else {
        if ($::opt_margins =~ /^\s*([\-\.\d]+)\s*$/) {
            ($llx, $lly, $urx, $ury) = ($1, $1, $1, $1);
        }
        else {
            die "$Error Parse error (option --margins)!\n";
        }
    }
}
print "* Margins: $llx $lly $urx $ury\n" if $::opt_debug;

### cleanup system
my @unlink_files = ();
my $exit_code = 1;
sub clean {
    print "* Cleanup\n" if $::opt_debug;
    if ($::opt_debug) {
        print "* Temporary files: @unlink_files\n";
    }
    else {
        for (; @unlink_files>0; ) {
            unlink shift @unlink_files;
        }
    }
}
sub cleanup {
    clean();
    exit($exit_code);
}
$SIG{'INT'} = \&cleanup;
$SIG{'__DIE__'} = \&clean;

### Calculation of BoundingBoxes

my $cmd = "$::opt_gscmd -sDEVICE=bbox -dBATCH -dNOPAUSE ";
$cmd .= "-sPAPERSIZE=$::opt_papersize " if $::opt_papersize;
$cmd .= "-c save pop -f " . $inputfile;
my $cmdpipe = $cmd . " 2>&1 1>$null |";

my $tmpfile = "$tmp.tex";
push @unlink_files, $tmpfile;
open(TMP, ">$tmpfile") or
    die "$Error Cannot write tmp file `$tmpfile'!\n";
print TMP "\\def\\pdffile{$inputfile}\n";
print TMP <<'END_TMP_HEAD';
\csname pdfmapfile\endcsname{}
\def\page #1 [#2 #3 #4 #5]{%
  \count0=#1\relax
  \setbox0=\hbox{%
    \pdfximage page #1{\pdffile}%
    \pdfrefximage\pdflastximage
  }%
  \pdfhorigin=-#2bp\relax
  \pdfvorigin=#3bp\relax
  \pdfpagewidth=#4bp\relax
  \advance\pdfpagewidth by -#2bp\relax
  \pdfpageheight=#5bp\relax
  \advance\pdfpageheight by -#3bp\relax
  \ht0=\pdfpageheight
  \shipout\box0\relax
}
\def\pageclip #1 [#2 #3 #4 #5][#6 #7 #8 #9]{%
  \count0=#1\relax
  \dimen0=#4bp\relax \advance\dimen0 by -#2bp\relax
  \edef\imagewidth{\the\dimen0}%
  \dimen0=#5bp\relax \advance\dimen0 by -#3bp\relax
  \edef\imageheight{\the\dimen0}%
  \pdfximage page #1{\pdffile}%
  \setbox0=\hbox{%
    \kern -#2bp\relax
    \lower #3bp\hbox{\pdfrefximage\pdflastximage}%
  }%
  \wd0=\imagewidth\relax
  \ht0=\imageheight\relax
  \dp0=0pt\relax
  \pdfhorigin=#6pt\relax
  \pdfvorigin=#7bp\relax
  \pdfpagewidth=\imagewidth
  \advance\pdfpagewidth by #6bp\relax
  \advance\pdfpagewidth by #8bp\relax
  \pdfpageheight=\imageheight\relax
  \advance\pdfpageheight by #7bp\relax
  \advance\pdfpageheight by #9bp\relax
  \pdfxform0\relax
  \shipout\hbox{\pdfrefxform\pdflastxform}%
}%
END_TMP_HEAD

print "* Running ghostscript for BoundingBox calculation ...\n"
    if $::opt_verbose;
print "* Ghostscript pipe: $cmdpipe\n" if $::opt_debug;

my $page = 0;
open(CMD, $cmdpipe) or
    die "$Error Cannot call ghostscript!\n";
while (<CMD>) {
    my $bb = ($::opt_hires) ? "%%HiResBoundingBox" : "%%BoundingBox";
    next unless
        /^$bb:\s*([\.\d]+) ([\.\d]+) ([\.\d]+) ([\.\d]+)/o;
    $page++;
    print "* Page $page: $1 $2 $3 $4\n" if $::opt_verbose;
    if ($::opt_clip) {
        print TMP "\\pageclip $page [$1 $2 $3 $4][$llx $lly $urx $ury]\n";
    }
    else {
        my ($a, $b, $c, $d) = ($1 - $llx, $2 - $ury, $3 + $urx, $4 + $lly);
        print TMP "\\page $page [$a $b $c $d]\n";
    }
}
close(CMD);

print TMP "\\csname \@\@end\\endcsname\n\\end\n";
close(TMP);

### Run pdfTeX

push @unlink_files, "$tmp.log";
if ($::opt_verbose) {
    $cmd = "$::opt_pdftexcmd -interaction=nonstopmode $tmp";
}
else {
    $cmd = "$::opt_pdftexcmd -interaction=batchmode $tmp";
}
print "* Running pdfTeX ...\n" if $::opt_verbose;
print "* pdfTeX call: $cmd\n" if $::opt_debug;
if ($::opt_verbose) {
    system($cmd);
}
else {
    `$cmd`;
}
if ($?) {
    die "$Error pdfTeX run failed!\n";
}

### Move temp file to output
rename "$tmp.pdf", $outputfile or
    die "$Error Cannot move `$tmp.pdf' to `$outputfile'!\n";

print "==> $page pages written on `$outputfile'.\n";

$exit_code = 0;
cleanup();

__END__