1 | #!/usr/bin/env perl
|
---|
2 |
|
---|
3 | # Copyright 1998-2001 by Sebastian Rahtz et al.
|
---|
4 | # epstopdf is free software; you can redistribute it and/or modify
|
---|
5 | # it under the terms of the GNU General Public License as published by
|
---|
6 | # the Free Software Foundation; either version 2 of the License, or
|
---|
7 | # (at your option) any later version.
|
---|
8 | #
|
---|
9 | # epstopdf is distributed in the hope that it will be useful,
|
---|
10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
12 | # GNU General Public License for more details.
|
---|
13 | #
|
---|
14 | # You should have received a copy of the GNU General Public License
|
---|
15 | # along with epstopdf; if not, write to the Free Software
|
---|
16 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
---|
17 |
|
---|
18 | use strict;
|
---|
19 |
|
---|
20 | # A script to transform an EPS file so that:
|
---|
21 | # a) it is guarenteed to start at the 0,0 coordinate
|
---|
22 | # b) it sets a page size exactly corresponding to the BoundingBox
|
---|
23 | # This means that when Ghostscript renders it, the result needs no
|
---|
24 | # cropping, and the PDF MediaBox is correct.
|
---|
25 | # c) the result is piped to Ghostscript and a PDF version written
|
---|
26 | #
|
---|
27 | # It needs a Level 2 PS interpreter.
|
---|
28 | # If the bounding box is not right, of course, you have problems...
|
---|
29 | #
|
---|
30 | # The only thing I have not allowed for is the case of
|
---|
31 | # "%%BoundingBox: (atend)", which is more complicated.
|
---|
32 | #
|
---|
33 | # Sebastian Rahtz, for Elsevier Science
|
---|
34 | #
|
---|
35 | # now with extra tricks from Hans Hagen's texutil.
|
---|
36 | #
|
---|
37 | # History
|
---|
38 | # 1999/05/06 v2.5 (Heiko Oberdiek)
|
---|
39 | # * New options: --hires, --exact, --filter, --help.
|
---|
40 | # * Many cosmetics: title, usage, ...
|
---|
41 | # * New code for debug, warning, error
|
---|
42 | # * Detecting of cygwin perl
|
---|
43 | # * Scanning for %%{Hires,Exact,}BoundingBox.
|
---|
44 | # * Scanning only the header in order not to get a wrong
|
---|
45 | # BoundingBox of an included file.
|
---|
46 | # * (atend) supported.
|
---|
47 | # * uses strict; (earlier error detecting).
|
---|
48 | # * changed first comment from '%!PS' to '%!';
|
---|
49 | # * corrected (atend) pattern: '\s*\(atend\)'
|
---|
50 | # * using of $bbxpat in all BoundingBox cases,
|
---|
51 | # correct the first white space to '...Box:\s*$bb...'
|
---|
52 | # * corrected first line (one line instead of two before 'if 0;';
|
---|
53 | # 2000/11/05 v2.6 (Heiko Oberdiek)
|
---|
54 | # * %%HiresBoundingBox corrected to %%HiResBoundingBox
|
---|
55 | # 2001/03/05 v2.7 (Heiko Oberdiek)
|
---|
56 | # * Newline before grestore for the case that there is no
|
---|
57 | # whitespace at the end of the eps file.
|
---|
58 | # 2006/05/09 v2.8 (David W. Rankin, Jr.)
|
---|
59 | # * option --pdfvers to specify the Ghostscript command to set
|
---|
60 | # the PDF version output.
|
---|
61 |
|
---|
62 | my $IsWin32 = ($^O =~ /MSWin32/i);
|
---|
63 |
|
---|
64 | ### program identification
|
---|
65 | my $program = "epstosmth";
|
---|
66 | my $filedate="2006/05/09";
|
---|
67 | my $fileversion="2.8";
|
---|
68 | my $copyright = "Copyright 1998-2001 by Sebastian Rahtz et al.";
|
---|
69 | my $title = "\U$program\E $fileversion, $filedate - $copyright\n";
|
---|
70 |
|
---|
71 | ### ghostscript command name
|
---|
72 | my $GS = "gs";
|
---|
73 | $GS = "gswin32c" if $^O eq 'MSWin32';
|
---|
74 |
|
---|
75 | if ($IsWin32) {
|
---|
76 | $GS = `kpsecheck --ghostscript`;
|
---|
77 | $GS =~ m/^dll\s*:\s*(.+)/mio;
|
---|
78 | $GS = $1;
|
---|
79 | $GS =~ s/gsdll32.dll/gswin32c.exe/io;
|
---|
80 | if ($GS eq "") {
|
---|
81 | $GS = "gswin32c.exe";
|
---|
82 | }
|
---|
83 | $GS = "\"$GS\"" if ($GS =~ m/\s/);
|
---|
84 | }
|
---|
85 |
|
---|
86 | ### options
|
---|
87 | $::opt_help=0;
|
---|
88 | $::opt_debug=0;
|
---|
89 | $::opt_compress=1;
|
---|
90 | $::opt_gs=1;
|
---|
91 | $::opt_hires=0;
|
---|
92 | $::opt_exact=0;
|
---|
93 | $::opt_filter=0;
|
---|
94 | $::opt_outfile="";
|
---|
95 | $::opt_pdfvers="";
|
---|
96 | $::opt_gsdev="pdfwrite";
|
---|
97 | $::opt_gsopt="";
|
---|
98 |
|
---|
99 | ### usage
|
---|
100 | my @bool = ("false", "true");
|
---|
101 | my $usage = <<"END_OF_USAGE";
|
---|
102 | ${title}Syntax: $program [options] <eps file>
|
---|
103 | Options:
|
---|
104 | --help: print usage
|
---|
105 | --outfile=<file>: write result to <file>
|
---|
106 | --(no)filter: read standard input (default: $bool[$::opt_filter])
|
---|
107 | --(no)gs: run ghostscript (default: $bool[$::opt_gs])
|
---|
108 | --(no)compress: use compression (default: $bool[$::opt_compress])
|
---|
109 | --(no)pdfvers: PDF Version for Output (default: [GhostScript's default])
|
---|
110 | --(no)hires: scan HiResBoundingBox (default: $bool[$::opt_hires])
|
---|
111 | --(no)exact: scan ExactBoundingBox (default: $bool[$::opt_exact])
|
---|
112 | --(no)debug: debug informations (default: $bool[$::opt_debug])
|
---|
113 | --gsdev=<dev>: select gs device
|
---|
114 | --gsopt=<opts>: additional gs options
|
---|
115 | Examples for producing 'test.pdf':
|
---|
116 | * $program test.eps
|
---|
117 | * produce postscript | $program --filter >test.pdf
|
---|
118 | * produce postscript | $program -f -d -o=test.pdf
|
---|
119 | Example: look for HiResBoundingBox and produce corrected PostScript:
|
---|
120 | * $program -d --nogs -hires test.ps>testcorr.ps
|
---|
121 | END_OF_USAGE
|
---|
122 |
|
---|
123 | ### process options
|
---|
124 | use Getopt::Long;
|
---|
125 | GetOptions (
|
---|
126 | "help!",
|
---|
127 | "debug!",
|
---|
128 | "filter!",
|
---|
129 | "compress!",
|
---|
130 | "gs!",
|
---|
131 | "hires!",
|
---|
132 | "exact!",
|
---|
133 | "pdfvers=s",
|
---|
134 | "outfile=s",
|
---|
135 | "gsdev=s",
|
---|
136 | "gsopt=s",
|
---|
137 | ) or die $usage;
|
---|
138 |
|
---|
139 | ### help functions
|
---|
140 | sub debug {
|
---|
141 | print STDERR "* @_\n" if $::opt_debug;
|
---|
142 | }
|
---|
143 | sub warning {
|
---|
144 | print STDERR "==> Warning: @_!\n";
|
---|
145 | }
|
---|
146 | sub error {
|
---|
147 | die "$title!!! Error: @_!\n";
|
---|
148 | }
|
---|
149 | sub errorUsage {
|
---|
150 | die "$usage\n!!! Error: @_!\n";
|
---|
151 | }
|
---|
152 |
|
---|
153 | ### option help
|
---|
154 | die $usage if $::opt_help;
|
---|
155 |
|
---|
156 | ### get input filename
|
---|
157 | my $InputFilename = "";
|
---|
158 | if ($::opt_filter) {
|
---|
159 | @ARGV == 0 or
|
---|
160 | die errorUsage "Input file cannot be used with filter option";
|
---|
161 | $InputFilename = "-";
|
---|
162 | debug "Input file: standard input";
|
---|
163 | }
|
---|
164 | else {
|
---|
165 | @ARGV > 0 or die errorUsage "Input filename missing";
|
---|
166 | @ARGV < 2 or die errorUsage "Unknown option or too many input files";
|
---|
167 | $InputFilename = $ARGV[0];
|
---|
168 | -f $InputFilename or error "'$InputFilename' does not exist";
|
---|
169 | debug "Input filename:", $InputFilename;
|
---|
170 | }
|
---|
171 |
|
---|
172 | ### option compress
|
---|
173 | my $GSOPTS = "$::opt_gsopt ";
|
---|
174 |
|
---|
175 | debug "gs opts:", $GSOPTS;
|
---|
176 |
|
---|
177 | $GSOPTS .= "-dUseFlateCompression=false " unless $::opt_compress;
|
---|
178 |
|
---|
179 | ### option pdfvers (GhostScript PDF Compatability options)
|
---|
180 | $GSOPTS .= "-dCompatibilityLevel=$::opt_pdfvers " unless $::opt_pdfvers eq "";
|
---|
181 |
|
---|
182 | ### option BoundingBox types
|
---|
183 | my $BBName = "%%BoundingBox:";
|
---|
184 | !($::opt_hires and $::opt_exact) or
|
---|
185 | error "Options --hires and --exact cannot be used together";
|
---|
186 | $BBName = "%%HiResBoundingBox:" if $::opt_hires;
|
---|
187 | $BBName = "%%ExactBoundingBox:" if $::opt_exact;
|
---|
188 | debug "BoundingBox comment:", $BBName;
|
---|
189 |
|
---|
190 | ### option outfile
|
---|
191 | my $OutputFilename = $::opt_outfile;
|
---|
192 | if ($OutputFilename eq "") {
|
---|
193 | if ($::opt_gs) {
|
---|
194 | $OutputFilename = $InputFilename;
|
---|
195 | if (!$::opt_filter) {
|
---|
196 | $OutputFilename =~ s/\.[^\.]*$//;
|
---|
197 | if ($::opt_gsdev =~ m/^pdf/) {
|
---|
198 | $OutputFilename .= '.pdf';
|
---|
199 | } elsif ($::opt_gsdev =~ m/^png/) {
|
---|
200 | $OutputFilename .= '.png';
|
---|
201 | } elsif ($::opt_gsdev =~ m/^jpeg/) {
|
---|
202 | $OutputFilename .= '.jpg';
|
---|
203 | } else {
|
---|
204 | $OutputFilename .= ($::opt_gsdev eq "" ? ".pdf" : ".$::opt_gsdev");
|
---|
205 | }
|
---|
206 | }
|
---|
207 | }
|
---|
208 | else {
|
---|
209 | $OutputFilename = "-"; # standard output
|
---|
210 | }
|
---|
211 | }
|
---|
212 | if ($::opt_filter) {
|
---|
213 | debug "Output file: standard output";
|
---|
214 | }
|
---|
215 | else {
|
---|
216 | debug "Output filename:", $OutputFilename;
|
---|
217 | }
|
---|
218 |
|
---|
219 | ### option gs
|
---|
220 | if ($::opt_gs) {
|
---|
221 | debug "Ghostscript command:", $GS;
|
---|
222 | debug "Compression:", ($::opt_compress) ? "on" : "off";
|
---|
223 | }
|
---|
224 |
|
---|
225 | ### open input file
|
---|
226 | open(IN,"<$InputFilename") or error "Cannot open",
|
---|
227 | ($::opt_filter) ? "standard input" : "'$InputFilename'";
|
---|
228 | binmode IN;
|
---|
229 |
|
---|
230 | ### open output file
|
---|
231 | if ($::opt_gs) {
|
---|
232 | my $pipe = "$GS -q -sDEVICE=$::opt_gsdev $GSOPTS " .
|
---|
233 | "-sOutputFile=$OutputFilename - -c quit";
|
---|
234 | debug "Ghostscript pipe:", $pipe;
|
---|
235 | open(OUT,"|$pipe") or error "Cannot open Ghostscript for piped input";
|
---|
236 | }
|
---|
237 | else {
|
---|
238 | open(OUT,">$OutputFilename") or error "Cannot write '$OutputFilename";
|
---|
239 | }
|
---|
240 |
|
---|
241 | ### scan first line
|
---|
242 | my $header = 0;
|
---|
243 | $_ = <IN>;
|
---|
244 | if (/%!/) {
|
---|
245 | # throw away binary junk before %!
|
---|
246 | s/(.*)%!/%!/o;
|
---|
247 | }
|
---|
248 | $header = 1 if /^%/;
|
---|
249 | debug "Scanning header for BoundingBox";
|
---|
250 | print OUT;
|
---|
251 |
|
---|
252 | ### variables and pattern for BoundingBox search
|
---|
253 | my $bbxpatt = '[0-9eE\.\-]';
|
---|
254 | # protect backslashes: "\\" gets '\'
|
---|
255 | my $BBValues = "\\s*($bbxpatt+)\\s+($bbxpatt+)\\s+($bbxpatt+)\\s+($bbxpatt+)";
|
---|
256 | my $BBCorrected = 0;
|
---|
257 |
|
---|
258 | sub CorrectBoundingBox {
|
---|
259 | my ($llx, $lly, $urx, $ury) = @_;
|
---|
260 | debug "Old BoundingBox:", $llx, $lly, $urx, $ury;
|
---|
261 | my ($width, $height) = ($urx - $llx, $ury - $lly);
|
---|
262 | my ($xoffset, $yoffset) = (-$llx, -$lly);
|
---|
263 | debug "New BoundingBox: 0 0", $width, $height;
|
---|
264 | debug "Offset:", $xoffset, $yoffset;
|
---|
265 |
|
---|
266 | print OUT "%%BoundingBox: 0 0 $width $height\n";
|
---|
267 | print OUT "<< /PageSize [$width $height] >> setpagedevice\n";
|
---|
268 | print OUT "gsave $xoffset $yoffset translate\n";
|
---|
269 | }
|
---|
270 |
|
---|
271 | ### scan header
|
---|
272 | if ($header) {
|
---|
273 | while (<IN>) {
|
---|
274 |
|
---|
275 | ### end of header
|
---|
276 | if (!/^%/ or /^%%EndComments/) {
|
---|
277 | print OUT;
|
---|
278 | last;
|
---|
279 | }
|
---|
280 |
|
---|
281 | ### BoundingBox with values
|
---|
282 | if (/^$BBName$BBValues/) {
|
---|
283 | CorrectBoundingBox $1, $2, $3, $4;
|
---|
284 | $BBCorrected = 1;
|
---|
285 | last;
|
---|
286 | }
|
---|
287 |
|
---|
288 | ### BoundingBox with (atend)
|
---|
289 | if (/^$BBName\s*\(atend\)/) {
|
---|
290 | debug $BBName, "(atend)";
|
---|
291 | if ($::opt_filter) {
|
---|
292 | warning "Cannot look for BoundingBox in the trailer",
|
---|
293 | "with option --filter";
|
---|
294 | last;
|
---|
295 | }
|
---|
296 | my $pos = tell(IN);
|
---|
297 | debug "Current file position:", $pos;
|
---|
298 |
|
---|
299 | # looking for %%BoundingBox
|
---|
300 | while (<IN>) {
|
---|
301 | # skip over included documents
|
---|
302 | if (/^%%BeginDocument/) {
|
---|
303 | while (<IN>) {
|
---|
304 | last if /^%%EndDocument/;
|
---|
305 | }
|
---|
306 | }
|
---|
307 | if (/^$BBName$BBValues/) {
|
---|
308 | CorrectBoundingBox $1, $2, $3, $4;
|
---|
309 | $BBCorrected = 1;
|
---|
310 | last;
|
---|
311 | }
|
---|
312 | }
|
---|
313 |
|
---|
314 | # go back
|
---|
315 | seek(IN, $pos, 0) or error "Cannot go back to line '$BBName (atend)'";
|
---|
316 | last;
|
---|
317 | }
|
---|
318 |
|
---|
319 | # print header line
|
---|
320 | print OUT;
|
---|
321 | }
|
---|
322 | }
|
---|
323 |
|
---|
324 | ### print rest of file
|
---|
325 | while (<IN>) {
|
---|
326 | print OUT;
|
---|
327 | }
|
---|
328 |
|
---|
329 | ### close files
|
---|
330 | close(IN);
|
---|
331 | print OUT "\ngrestore\n" if $BBCorrected;
|
---|
332 | close(OUT);
|
---|
333 | warning "BoundingBox not found" unless $BBCorrected;
|
---|
334 | debug "Ready.";
|
---|
335 | ;
|
---|