[1445] | 1 | #!/usr/bin/perl -w
|
---|
| 2 |
|
---|
| 3 | ###########################################################################
|
---|
| 4 | #
|
---|
[2032] | 5 | # gsConvert.pl -- convert documents to HTML or TEXT format
|
---|
[1445] | 6 | #
|
---|
| 7 | # A component of the Greenstone digital library software
|
---|
| 8 | # from the New Zealand Digital Library Project at the
|
---|
| 9 | # University of Waikato, New Zealand.
|
---|
| 10 | #
|
---|
[3013] | 11 | # Copyright (C) 1999-2002 New Zealand Digital Library Project
|
---|
[1445] | 12 | #
|
---|
| 13 | # This program is free software; you can redistribute it and/or modify
|
---|
| 14 | # it under the terms of the GNU General Public License as published by
|
---|
| 15 | # the Free Software Foundation; either version 2 of the License, or
|
---|
| 16 | # (at your option) any later version.
|
---|
| 17 | #
|
---|
| 18 | # This program is distributed in the hope that it will be useful,
|
---|
| 19 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 20 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 21 | # GNU General Public License for more details.
|
---|
| 22 | #
|
---|
| 23 | # You should have received a copy of the GNU General Public License
|
---|
| 24 | # along with this program; if not, write to the Free Software
|
---|
| 25 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
| 26 | #
|
---|
| 27 | ###########################################################################
|
---|
| 28 |
|
---|
| 29 | # gsConvert.pl converts documents in a range of formats to HTML or TEXT
|
---|
[2755] | 30 | # by exploiting third-party programs. The sources of these are usually found
|
---|
| 31 | # in the $GSDLHOME/packages directory, and the executables should live in
|
---|
| 32 | # $GSDLHOME/bin/$GSDLOS (which is on the search path).
|
---|
[1445] | 33 | #
|
---|
[3013] | 34 | # Currently, we can convert the following formats by using external
|
---|
| 35 | # conversion utilities:
|
---|
| 36 | # Microsoft Word (versions 2,6,7 [==95?], 8[==97?], 9[==2000?]), RTF,
|
---|
| 37 | # Adobe PDF, PostScript, MS PowerPoint (95 and 97), and MS Excel (95 and 97).
|
---|
[2032] | 38 | #
|
---|
[3013] | 39 | # We can try to convert any file to text with a perl implementation of the
|
---|
| 40 | # UNIX strings command.
|
---|
| 41 | #
|
---|
[2032] | 42 | # We try to convert Postscript files to text using "gs" which is often on
|
---|
[2755] | 43 | # *nix machines. We fall back to performing weak text extraction by using
|
---|
| 44 | # regular expressions.
|
---|
[1445] | 45 |
|
---|
| 46 | BEGIN {
|
---|
| 47 | die "GSDLHOME not set\n" unless defined $ENV{'GSDLHOME'};
|
---|
| 48 | unshift (@INC, "$ENV{'GSDLHOME'}/perllib");
|
---|
| 49 | }
|
---|
| 50 |
|
---|
[22429] | 51 | use strict;
|
---|
| 52 |
|
---|
[1445] | 53 | use parsargv;
|
---|
| 54 | use util;
|
---|
[27509] | 55 | use FileUtils;
|
---|
[1445] | 56 | use Cwd;
|
---|
| 57 |
|
---|
[2755] | 58 | # Are we running on WinNT or Win2000 (or later)?
|
---|
| 59 | my $is_winnt_2000=eval {require Win32; return (Win32::IsWinNT()); return 0;};
|
---|
| 60 | if (!defined($is_winnt_2000)) {$is_winnt_2000=0;}
|
---|
[1445] | 61 |
|
---|
[3350] | 62 | my $use_strings;
|
---|
[32273] | 63 | my $pdf_tool;
|
---|
[3720] | 64 | my $pdf_complex;
|
---|
[4103] | 65 | my $pdf_nohidden;
|
---|
[3720] | 66 | my $pdf_zoom;
|
---|
[32284] | 67 | my $pdf_dpi;
|
---|
[3720] | 68 | my $pdf_ignore_images;
|
---|
[10451] | 69 | my $pdf_allow_images_only;
|
---|
[10282] | 70 | my $windows_scripting;
|
---|
[32224] | 71 | my $enc;
|
---|
[3350] | 72 |
|
---|
[1445] | 73 | sub print_usage
|
---|
| 74 | {
|
---|
[1970] | 75 | print STDERR "\n";
|
---|
| 76 | print STDERR "gsConvert.pl: Converts documents in a range of formats to html\n";
|
---|
| 77 | print STDERR " or text using third-party programs.\n\n";
|
---|
| 78 | print STDERR " usage: $0 [options] filename\n";
|
---|
[22642] | 79 | print STDERR " options:\n\t-type\tdoc|dot|pdf|ps|ppt|rtf|xls\t(input file type)\n";
|
---|
[2755] | 80 | print STDERR "\t-errlog\t<filename>\t(append err messages)\n";
|
---|
[32277] | 81 | print STDERR "\t-output\tauto|html|pretty_html|paged_pretty_html|paged_html|text|paged_text|pagedimg_jpg|pagedimg_gif|pagedimg_png|pagedimgtxt_jpg|pagedimgtxt_png\t(output file type)\n";
|
---|
[2755] | 82 | print STDERR "\t-timeout\t<max cpu seconds>\t(ulimit on unix systems)\n";
|
---|
[3720] | 83 | print STDERR "\t-use_strings\tuse strings to extract text if conversion fails\n";
|
---|
[22568] | 84 | print STDERR "\t-windows_scripting\tuse windows VB script (if available) to convert Microsoft Word and PPT documents\n";
|
---|
[32273] | 85 | print STDERR "\t-pdf_tool\tpdftohtml|xpdftools|pdfbox (not all output types are supported by every pdf_tool)\n";
|
---|
[3720] | 86 | print STDERR "\t-pdf_complex\tuse complex output when converting PDF to HTML\n";
|
---|
[4103] | 87 | print STDERR "\t-pdf_nohidden\tDon't attempt to extract hidden text from PDF files\n";
|
---|
[3720] | 88 | print STDERR "\t-pdf_ignore_images\tdon't attempt to extract images when\n";
|
---|
| 89 | print STDERR "\t\tconverting PDF to HTML\n";
|
---|
[10451] | 90 | print STDERR "\t-pdf_allow_images_only\tallow images only (continue even if no text is present when converting to HTML)\n";
|
---|
[3720] | 91 | print STDERR "\t-pdf_zoom\tfactor by which to zoom PDF (only useful if\n";
|
---|
| 92 | print STDERR "\t\t-pdf_complex is set\n";
|
---|
[32284] | 93 | print STDERR "\t-pdf_dpi\tSet the resolution in DPI of background images produced by xpdf's pdftohtml\n";
|
---|
[1445] | 94 | exit(1);
|
---|
| 95 | }
|
---|
| 96 |
|
---|
[2755] | 97 | my $faillogfile="";
|
---|
[3538] | 98 | my $timeout=0;
|
---|
[24375] | 99 | my $verbosity=0;
|
---|
[1445] | 100 |
|
---|
| 101 | sub main
|
---|
| 102 | {
|
---|
| 103 | my (@ARGV) = @_;
|
---|
[3538] | 104 | my ($input_type,$output_type,$verbose);
|
---|
[1960] | 105 |
|
---|
[23473] | 106 | # Dynamically figure out what the --type option can support, based on whether -windows_scripting
|
---|
| 107 | # is in use or not
|
---|
| 108 | my $default_type_re = "(doc|dot|pdf|ps|ppt|rtf|xls)";
|
---|
| 109 | #my $enhanced_type_re = "(docx?|dot|pdf|ps|pptx?|rtf|xlsx?)";
|
---|
| 110 | #my $enhanced_type_re = "(docx?|dot|pdf|ps|pptx?|rtf|xlsx?)";
|
---|
| 111 | # Currently only have VBA for Word and PPT(but no XLS)
|
---|
| 112 | my $enhanced_type_re = "(docx?|dot|pdf|ps|pptx?|rtf|xls)";
|
---|
| 113 |
|
---|
| 114 | my $type_re = $default_type_re;
|
---|
| 115 |
|
---|
| 116 | foreach my $a (@ARGV) {
|
---|
| 117 | if ($a =~ m/^windows_scripting$/i) {
|
---|
| 118 | $type_re = $enhanced_type_re;
|
---|
| 119 | }
|
---|
| 120 | }
|
---|
| 121 |
|
---|
[1445] | 122 | # read command-line arguments
|
---|
| 123 | if (!parsargv::parse(\@ARGV,
|
---|
[23473] | 124 | "type/$type_re/", \$input_type,
|
---|
[2755] | 125 | '/errlog/.*/', \$faillogfile,
|
---|
[32273] | 126 | 'output/(auto|html|text|pagedimg).*/', \$output_type, # regex includes html_multi and paged_html besides html
|
---|
[1692] | 127 | 'timeout/\d+/0',\$timeout,
|
---|
[10282] | 128 | 'verbose/\d+/0', \$verbose,
|
---|
[22429] | 129 | 'windows_scripting',\$windows_scripting,
|
---|
[3720] | 130 | 'use_strings', \$use_strings,
|
---|
[32273] | 131 | 'pdf_tool/(pdftohtml|pdfbox|xpdftools)/', \$pdf_tool, # the old pdftohtml tool, pdfbox extensions or the newer xpdf-tools
|
---|
| 132 | 'pdf_complex', \$pdf_complex, # options for pdf_tool = pdftohtml (the old pdftohtml tool)
|
---|
[9482] | 133 | 'pdf_ignore_images', \$pdf_ignore_images,
|
---|
[10451] | 134 | 'pdf_allow_images_only', \$pdf_allow_images_only,
|
---|
[4103] | 135 | 'pdf_nohidden', \$pdf_nohidden,
|
---|
[32284] | 136 | 'pdf_zoom/\d+/2', \$pdf_zoom,
|
---|
| 137 | 'pdf_dpi/\d+/96', \$pdf_dpi
|
---|
[3720] | 138 | ))
|
---|
[1445] | 139 | {
|
---|
| 140 | print_usage();
|
---|
| 141 | }
|
---|
[24375] | 142 |
|
---|
| 143 | $verbosity=$verbose if defined $verbose;
|
---|
| 144 |
|
---|
[1445] | 145 | # Make sure the input file exists and can be opened for reading
|
---|
| 146 | if (scalar(@ARGV!=1)) {
|
---|
| 147 | print_usage();
|
---|
| 148 | }
|
---|
[1928] | 149 |
|
---|
[1445] | 150 | my $input_filename = $ARGV[0];
|
---|
| 151 | if (!-r $input_filename) {
|
---|
| 152 | print STDERR "Error: unable to open $input_filename for reading\n";
|
---|
| 153 | exit(1);
|
---|
| 154 | }
|
---|
| 155 |
|
---|
| 156 | # Deduce filenames
|
---|
| 157 | my ($tailname,$dirname,$suffix)
|
---|
[2241] | 158 | = File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
|
---|
[27509] | 159 | my $output_filestem = &FileUtils::filenameConcatenate($dirname, "$tailname");
|
---|
[1445] | 160 |
|
---|
| 161 | if ($input_type eq "")
|
---|
| 162 | {
|
---|
[2241] | 163 | $input_type = lc (substr($suffix,1,length($suffix)-1));
|
---|
[1445] | 164 | }
|
---|
| 165 |
|
---|
| 166 | # Change to temporary working directory
|
---|
| 167 | my $stored_dir = cwd();
|
---|
| 168 | chdir ($dirname) || die "Unable to change to directory $dirname";
|
---|
[10357] | 169 |
|
---|
[1445] | 170 | # Select convert utility
|
---|
| 171 | if (!defined $input_type) {
|
---|
| 172 | print STDERR "Error: No filename extension or input type defined\n";
|
---|
| 173 | exit(1);
|
---|
| 174 | }
|
---|
[23473] | 175 | elsif ($input_type =~ m/^docx?$/ || $input_type eq "dot") {
|
---|
[1445] | 176 | print &convertDOC($input_filename, $output_filestem, $output_type);
|
---|
| 177 | print "\n";
|
---|
| 178 | }
|
---|
[1684] | 179 | elsif ($input_type eq "rtf") {
|
---|
| 180 | print &convertRTF($input_filename, $output_filestem, $output_type);
|
---|
| 181 | print "\n";
|
---|
| 182 | }
|
---|
[1445] | 183 | elsif ($input_type eq "pdf") {
|
---|
| 184 | print &convertPDF($dirname, $input_filename, $output_filestem, $output_type);
|
---|
| 185 | print "\n";
|
---|
| 186 | }
|
---|
| 187 | elsif ($input_type eq "ps") {
|
---|
[22429] | 188 | print &convertPS($dirname, $input_filename, $output_filestem, $output_type);
|
---|
[1445] | 189 | print "\n";
|
---|
| 190 | }
|
---|
[23473] | 191 | elsif ($input_type =~ m/pptx?$/) {
|
---|
[2977] | 192 | print &convertPPT($input_filename, $output_filestem, $output_type);
|
---|
| 193 | print "\n";
|
---|
| 194 | }
|
---|
[23473] | 195 | elsif ($input_type =~ m/xlsx?$/) {
|
---|
[2991] | 196 | print &convertXLS($input_filename, $output_filestem, $output_type);
|
---|
| 197 | print "\n";
|
---|
| 198 | }
|
---|
[1445] | 199 | else {
|
---|
| 200 | print STDERR "Error: Unable to convert type '$input_type'\n";
|
---|
| 201 | exit(1);
|
---|
| 202 | }
|
---|
| 203 |
|
---|
| 204 | # restore to original working directory
|
---|
| 205 | chdir ($stored_dir) || die "Unable to return to directory $stored_dir";
|
---|
| 206 |
|
---|
| 207 | }
|
---|
| 208 |
|
---|
| 209 | &main(@ARGV);
|
---|
| 210 |
|
---|
| 211 |
|
---|
| 212 |
|
---|
[2241] | 213 | # Document-type conversion functions
|
---|
[1445] | 214 | #
|
---|
| 215 | # The following functions attempt to convert documents from their
|
---|
| 216 | # input type to the specified output type. If no output type was
|
---|
| 217 | # given, then they first attempt HTML, and then TEXT.
|
---|
| 218 | #
|
---|
| 219 | # Each returns the output type ("html" or "text") or "fail" if no
|
---|
| 220 | # conversion is possible.
|
---|
| 221 |
|
---|
| 222 | # Convert a Microsoft word document
|
---|
| 223 |
|
---|
| 224 | sub convertDOC {
|
---|
[22429] | 225 | my ($input_filename, $output_filestem, $output_type) = @_;
|
---|
[1445] | 226 |
|
---|
[1654] | 227 | # Many .doc files are not in fact word documents!
|
---|
| 228 | my $realtype = &find_docfile_type($input_filename);
|
---|
| 229 |
|
---|
[23473] | 230 | if ($realtype eq "word6" || $realtype eq "word7"
|
---|
| 231 | || $realtype eq "word8" || $realtype eq "docx") {
|
---|
[1654] | 232 | return &convertWord678($input_filename, $output_filestem, $output_type);
|
---|
| 233 | } elsif ($realtype eq "rtf") {
|
---|
| 234 | return &convertRTF($input_filename, $output_filestem, $output_type);
|
---|
| 235 | } else {
|
---|
| 236 | return &convertAnything($input_filename, $output_filestem, $output_type);
|
---|
| 237 | }
|
---|
| 238 | }
|
---|
| 239 |
|
---|
| 240 | # Convert a Microsoft word 6/7/8 document
|
---|
| 241 |
|
---|
| 242 | sub convertWord678 {
|
---|
[22429] | 243 | my ($input_filename, $output_filestem, $output_type) = @_;
|
---|
[1654] | 244 |
|
---|
[1445] | 245 | my $success = 0;
|
---|
[16435] | 246 | if (!$output_type || ($output_type =~ m/html/i)){
|
---|
[10282] | 247 | if ($windows_scripting) {
|
---|
| 248 | $success = &native_doc_to_html($input_filename, $output_filestem);
|
---|
| 249 | }
|
---|
| 250 | else {
|
---|
| 251 | $success = &doc_to_html($input_filename, $output_filestem);
|
---|
| 252 | }
|
---|
[1445] | 253 | if ($success) {
|
---|
[10282] | 254 | return "html";
|
---|
[1445] | 255 | }
|
---|
| 256 | }
|
---|
[1654] | 257 | return &convertAnything($input_filename, $output_filestem, $output_type);
|
---|
| 258 | }
|
---|
| 259 |
|
---|
| 260 |
|
---|
| 261 | # Convert a Rich Text Format (RTF) file
|
---|
| 262 |
|
---|
| 263 | sub convertRTF {
|
---|
[22429] | 264 | my ($input_filename, $output_filestem, $output_type) = @_;
|
---|
[1654] | 265 |
|
---|
| 266 | my $success = 0;
|
---|
| 267 |
|
---|
| 268 | # Attempt specialised conversion to HTML
|
---|
[16435] | 269 | if (!$output_type || ($output_type =~ m/html/i)) {
|
---|
[12704] | 270 |
|
---|
| 271 | if ($windows_scripting) {
|
---|
| 272 | $success = &native_doc_to_html($input_filename, $output_filestem);
|
---|
| 273 | }
|
---|
| 274 | else {
|
---|
| 275 | $success = &rtf_to_html($input_filename, $output_filestem);
|
---|
| 276 | }
|
---|
[1654] | 277 | if ($success) {
|
---|
| 278 | return "html";
|
---|
| 279 | }
|
---|
| 280 | }
|
---|
| 281 |
|
---|
[2755] | 282 | # rtf is so ugly that's it's not worth running strings over.
|
---|
| 283 | # One day I'll write some quick'n'dirty regexps to try to extract text - jrm21
|
---|
| 284 | # return &convertAnything($input_filename, $output_filestem, $output_type);
|
---|
| 285 | return "fail";
|
---|
[1654] | 286 | }
|
---|
| 287 |
|
---|
| 288 |
|
---|
| 289 | # Convert an unidentified file
|
---|
| 290 |
|
---|
| 291 | sub convertAnything {
|
---|
[22429] | 292 | my ($input_filename, $output_filestem, $output_type) = @_;
|
---|
[1654] | 293 |
|
---|
| 294 | my $success = 0;
|
---|
[10464] | 295 |
|
---|
[1445] | 296 | # Attempt simple conversion to HTML
|
---|
[16435] | 297 | if (!$output_type || ($output_type =~ m/html/i)) {
|
---|
[1445] | 298 | $success = &any_to_html($input_filename, $output_filestem);
|
---|
| 299 | if ($success) {
|
---|
| 300 | return "html";
|
---|
| 301 | }
|
---|
| 302 | }
|
---|
| 303 |
|
---|
| 304 | # Convert to text
|
---|
[16435] | 305 | if (!$output_type || ($output_type =~ m/text/i)) {
|
---|
[2241] | 306 | $success = &any_to_text($input_filename, $output_filestem);
|
---|
[1445] | 307 | if ($success) {
|
---|
| 308 | return "text";
|
---|
| 309 | }
|
---|
| 310 | }
|
---|
| 311 | return "fail";
|
---|
| 312 | }
|
---|
| 313 |
|
---|
| 314 |
|
---|
[1654] | 315 |
|
---|
[1445] | 316 | # Convert an Adobe PDF document
|
---|
| 317 |
|
---|
| 318 | sub convertPDF {
|
---|
[2755] | 319 | my ($dirname, $input_filename, $output_filestem, $output_type) = @_;
|
---|
[1445] | 320 |
|
---|
| 321 | my $success = 0;
|
---|
[10357] | 322 | $output_type =~ s/.*\-(.*)/$1/i;
|
---|
[32277] | 323 |
|
---|
[32287] | 324 | #print STDERR "@@@@@@@@ Using $pdf_tool for the conversion\n";
|
---|
[32277] | 325 |
|
---|
[32273] | 326 | # First determine which pdf conversion tool we're using among pdftohtml/pdfbox/xpdftools
|
---|
| 327 | # and then decide which conversion command to run based on the output type
|
---|
| 328 | # (pdfbox does not currently go through gsConvert.pl
|
---|
| 329 | # as PDFBoxConverter inherits from AutoLoadConverters)
|
---|
| 330 |
|
---|
| 331 | if ($pdf_tool eq "pdftohtml" ) { # old pdftohtml tool
|
---|
[10357] | 332 | # Attempt coversion to Image
|
---|
[16435] | 333 | if ($output_type =~ m/jp?g|gif|png/i) {
|
---|
[17329] | 334 | $success = &pdfps_to_img($dirname, $input_filename, $output_filestem, $output_type);
|
---|
[10357] | 335 | if ($success){
|
---|
| 336 | return "item";
|
---|
| 337 | }
|
---|
| 338 | }
|
---|
[1445] | 339 |
|
---|
| 340 | # Attempt conversion to HTML
|
---|
[32205] | 341 | # Uses the old pdftohtml that doesn't work for newer PDF versions
|
---|
[32223] | 342 | if ($output_type =~ m/^html/i) {
|
---|
| 343 | #if (!$output_type || ($output_type =~ m/^html/i)) {
|
---|
[1445] | 344 | $success = &pdf_to_html($dirname, $input_filename, $output_filestem);
|
---|
| 345 | if ($success) {
|
---|
| 346 | return "html";
|
---|
| 347 | }
|
---|
| 348 | }
|
---|
| 349 |
|
---|
[32273] | 350 | # Attempt conversion to TEXT (not for Windows, but PDFPlugin/PDFv1Plugin takes care of that
|
---|
| 351 | if (!$output_type || ($output_type =~ m/text/i)) {
|
---|
| 352 | $success = &pdf_to_text($dirname, $input_filename, $output_filestem);
|
---|
[32205] | 353 |
|
---|
[1445] | 354 | if ($success) {
|
---|
| 355 | return "text";
|
---|
| 356 | }
|
---|
| 357 | }
|
---|
[32273] | 358 | }
|
---|
| 359 |
|
---|
[32277] | 360 | elsif ($pdf_tool eq "xpdftools" ) {
|
---|
| 361 |
|
---|
| 362 | # default to pretty html output
|
---|
[32273] | 363 | if (!$output_type) {
|
---|
[32277] | 364 | $output_type = "pretty_html";
|
---|
[32273] | 365 | }
|
---|
| 366 |
|
---|
| 367 | # Attempt coversion to Image
|
---|
| 368 | #if ($output_type =~ m/jp?g|gif|png/i) {
|
---|
| 369 | # $success = &pdfps_to_img($dirname, $input_filename, $output_filestem, $output_type);
|
---|
| 370 | # if ($success){
|
---|
| 371 | # return "item";
|
---|
| 372 | # }
|
---|
| 373 | #}
|
---|
| 374 |
|
---|
[32277] | 375 | # Attempt conversion to (paged) pretty HTML using the newer pdftohtml of Xpdftools.
|
---|
| 376 | if ($output_type =~ m/pretty_html$/i) {
|
---|
[32273] | 377 | $success = &xpdf_to_html($dirname, $input_filename, $output_filestem);
|
---|
| 378 | if ($success) {
|
---|
| 379 | return $output_type;
|
---|
| 380 | }
|
---|
| 381 | }
|
---|
| 382 |
|
---|
| 383 | # Attempt conversion to TEXT
|
---|
[32277] | 384 | # Proper paged_text processing not yet implemented with xpdf
|
---|
| 385 | if ($output_type =~ m/text/i) {
|
---|
| 386 | $success = &xpdf_to_text($dirname, $input_filename, $output_filestem, $output_type);
|
---|
[32273] | 387 |
|
---|
| 388 | if ($success) {
|
---|
| 389 | return "text";
|
---|
| 390 | }
|
---|
| 391 | }
|
---|
[32277] | 392 | }
|
---|
| 393 |
|
---|
[1445] | 394 | return "fail";
|
---|
| 395 |
|
---|
| 396 | }
|
---|
| 397 |
|
---|
| 398 |
|
---|
| 399 | # Convert an Adobe PostScript document
|
---|
| 400 |
|
---|
| 401 | sub convertPS {
|
---|
[22429] | 402 | my ($dirname,$input_filename, $output_filestem, $output_type) = @_;
|
---|
[1445] | 403 |
|
---|
| 404 | my $success = 0;
|
---|
[10534] | 405 | $output_type =~ s/.*\-(.*)/$1/i;
|
---|
| 406 | # Attempt coversion to Image
|
---|
[16435] | 407 | if ($output_type =~ m/jp?g|gif|png/i) {
|
---|
[17329] | 408 | $success = &pdfps_to_img($dirname, $input_filename, $output_filestem, $output_type);
|
---|
[10534] | 409 | if ($success){
|
---|
| 410 | return "item";
|
---|
| 411 | }
|
---|
| 412 | }
|
---|
[1445] | 413 |
|
---|
| 414 | # Attempt conversion to TEXT
|
---|
[16435] | 415 | if (!$output_type || ($output_type =~ m/text/i)) {
|
---|
[1445] | 416 | $success = &ps_to_text($input_filename, $output_filestem);
|
---|
| 417 | if ($success) {
|
---|
| 418 | return "text";
|
---|
| 419 | }
|
---|
| 420 | }
|
---|
| 421 | return "fail";
|
---|
| 422 | }
|
---|
| 423 |
|
---|
| 424 |
|
---|
[2977] | 425 | sub convertPPT {
|
---|
| 426 | my ($input_filename, $output_filestem, $output_type) = @_;
|
---|
[10357] | 427 | my $success = 0;
|
---|
[2977] | 428 |
|
---|
[10282] | 429 | my $ppt_convert_type = "";
|
---|
[22513] | 430 |
|
---|
[16435] | 431 | #if (!$output_type || $windows_scripting || ($output_type !~ m/html/i) || ($output_type !~ m/text/i)){
|
---|
| 432 | if ($windows_scripting && ($output_type !~ m/html/i) && ($output_type !~ m/text/i)){
|
---|
| 433 | if ($output_type =~ m/gif/i) {
|
---|
[10282] | 434 | $ppt_convert_type = "-g";
|
---|
[16435] | 435 | } elsif ($output_type =~ m/jp?g/i){
|
---|
[10282] | 436 | $ppt_convert_type = "-j";
|
---|
[16435] | 437 | } elsif ($output_type =~ m/png/i){
|
---|
[10282] | 438 | $ppt_convert_type = "-p";
|
---|
| 439 | }
|
---|
[27509] | 440 | my $vbScript = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "bin",
|
---|
[10282] | 441 | $ENV{'GSDLOS'}, "pptextract");
|
---|
[28355] | 442 | $vbScript = "CScript //Nologo \"".$vbScript.".vbs\"" if ($ENV{'GSDLOS'} =~ m/^windows$/i); # now we use the .vbs VBScript
|
---|
| 443 | # $vbScript = "pptextract" if ($ENV{'GSDLOS'} =~ m/^windows$/i); # back when the pptextract.exe VB executable was used
|
---|
[10282] | 444 |
|
---|
[22429] | 445 | my $cmd = "";
|
---|
[10357] | 446 | if ($timeout) {$cmd = "ulimit -t $timeout;";}
|
---|
[22429] | 447 | # if the converting directory already exists
|
---|
[10282] | 448 | if (-d $output_filestem) {
|
---|
[22429] | 449 | print STDERR "**The conversion directory already exists\n";
|
---|
[10282] | 450 | return "item";
|
---|
| 451 | } else {
|
---|
[10521] | 452 | $cmd .= "$vbScript $ppt_convert_type \"$input_filename\" \"$output_filestem\"";
|
---|
[10282] | 453 | $cmd .= " 2>\"$output_filestem.err\""
|
---|
[16435] | 454 | if ($ENV{'GSDLOS'} !~ m/^windows$/i || $is_winnt_2000);
|
---|
[28355] | 455 |
|
---|
[10282] | 456 | if (system($cmd) !=0) {
|
---|
| 457 | print STDERR "Powerpoint VB Scripting convert failed\n";
|
---|
| 458 | } else {
|
---|
| 459 | return "item";
|
---|
| 460 | }
|
---|
| 461 | }
|
---|
[16435] | 462 | } elsif (!$output_type || ($output_type =~ m/html/i)) {
|
---|
[10282] | 463 | # Attempt conversion to HTML
|
---|
[16435] | 464 | #if (!$output_type || ($output_type =~ m/html/i)) {
|
---|
[2977] | 465 | # formulate the command
|
---|
[22429] | 466 | my $cmd = "";
|
---|
[24362] | 467 | my $full_perl_path = &util::get_perl_exec();
|
---|
[24124] | 468 | $cmd .= "\"$full_perl_path\" -S ppttohtml.pl ";
|
---|
[2977] | 469 | $cmd .= " \"$input_filename\" \"$output_filestem.html\"";
|
---|
| 470 | $cmd .= " 2>\"$output_filestem.err\""
|
---|
[16435] | 471 | if ($ENV{'GSDLOS'} !~ m/^windows$/i || $is_winnt_2000);
|
---|
[10357] | 472 |
|
---|
[2977] | 473 | # execute the command
|
---|
| 474 | $!=0;
|
---|
| 475 | if (system($cmd)!=0)
|
---|
| 476 | {
|
---|
[2991] | 477 | print STDERR "Powerpoint 95/97 converter failed $!\n";
|
---|
[2977] | 478 | } else {
|
---|
| 479 | return "html";
|
---|
| 480 | }
|
---|
[10464] | 481 | }
|
---|
[2977] | 482 |
|
---|
| 483 | $success = &any_to_text($input_filename, $output_filestem);
|
---|
| 484 | if ($success) {
|
---|
| 485 | return "text";
|
---|
| 486 | }
|
---|
[10464] | 487 |
|
---|
[2977] | 488 | return "fail";
|
---|
| 489 | }
|
---|
| 490 |
|
---|
| 491 |
|
---|
[2991] | 492 | sub convertXLS {
|
---|
| 493 | my ($input_filename, $output_filestem, $output_type) = @_;
|
---|
[2977] | 494 |
|
---|
[2991] | 495 | my $success = 0;
|
---|
[2977] | 496 |
|
---|
[2991] | 497 | # Attempt conversion to HTML
|
---|
[16435] | 498 | if (!$output_type || ($output_type =~ m/html/i)) {
|
---|
[2991] | 499 | # formulate the command
|
---|
[22429] | 500 | my $cmd = "";
|
---|
[24362] | 501 | my $full_perl_path = &util::get_perl_exec();
|
---|
[24124] | 502 | $cmd .= "\"$full_perl_path\" -S xlstohtml.pl ";
|
---|
[2991] | 503 | $cmd .= " \"$input_filename\" \"$output_filestem.html\"";
|
---|
| 504 | $cmd .= " 2>\"$output_filestem.err\""
|
---|
[16435] | 505 | if ($ENV{'GSDLOS'} !~ m/^windows$/i || $is_winnt_2000);
|
---|
[2991] | 506 |
|
---|
| 507 |
|
---|
| 508 | # execute the command
|
---|
| 509 | $!=0;
|
---|
| 510 | if (system($cmd)!=0)
|
---|
| 511 | {
|
---|
| 512 | print STDERR "Excel 95/97 converter failed $!\n";
|
---|
| 513 | } else {
|
---|
| 514 | return "html";
|
---|
| 515 | }
|
---|
| 516 | }
|
---|
[2977] | 517 |
|
---|
[2991] | 518 | $success = &any_to_text($input_filename, $output_filestem);
|
---|
| 519 | if ($success) {
|
---|
| 520 | return "text";
|
---|
| 521 | }
|
---|
| 522 |
|
---|
| 523 | return "fail";
|
---|
| 524 | }
|
---|
| 525 |
|
---|
| 526 |
|
---|
| 527 |
|
---|
[1654] | 528 | # Find the real type of a .doc file
|
---|
| 529 | #
|
---|
[2012] | 530 | # We seem to have a lot of files with a .doc extension that are .rtf
|
---|
[1654] | 531 | # files or Word 5 files. This function attempts to tell the difference.
|
---|
| 532 | sub find_docfile_type {
|
---|
[22429] | 533 | my ($input_filename) = @_;
|
---|
[23473] | 534 |
|
---|
| 535 | if (($windows_scripting) && ($input_filename =~ m/\.docx$/)) {
|
---|
| 536 | return "docx";
|
---|
| 537 | }
|
---|
| 538 |
|
---|
[1654] | 539 | open(CHK, "<$input_filename");
|
---|
[1734] | 540 | binmode(CHK);
|
---|
[1654] | 541 | my $line = "";
|
---|
| 542 | my $first = 1;
|
---|
| 543 |
|
---|
| 544 | while (<CHK>) {
|
---|
| 545 |
|
---|
| 546 | $line = $_;
|
---|
[1960] | 547 |
|
---|
[1654] | 548 | if ($first) {
|
---|
| 549 | # check to see if this is an rtf file
|
---|
[16435] | 550 | if ($line =~ m/^\{\\rtf/) {
|
---|
[1654] | 551 | close(CHK);
|
---|
| 552 | return "rtf";
|
---|
| 553 | }
|
---|
[2755] | 554 | $first = 0;
|
---|
[1654] | 555 | }
|
---|
| 556 |
|
---|
[1734] | 557 | # is this is a word 6/7/8 document?
|
---|
[16435] | 558 | if ($line =~ m/Word\.Document\.([678])/) {
|
---|
[1654] | 559 | close(CHK);
|
---|
[23473] | 560 |
|
---|
[1734] | 561 | return "word$1";
|
---|
[1654] | 562 | }
|
---|
| 563 |
|
---|
| 564 | }
|
---|
| 565 |
|
---|
| 566 | return "unknown";
|
---|
| 567 | }
|
---|
| 568 |
|
---|
| 569 |
|
---|
[1734] | 570 | # Specific type-to-type conversions
|
---|
[1445] | 571 | #
|
---|
| 572 | # Each of the following functions attempts to convert a document from
|
---|
[2755] | 573 | # a specific format to another. If they succeed they return 1 and leave
|
---|
[1445] | 574 | # the output document(s) in the appropriate place; if they fail they
|
---|
| 575 | # return 0 and delete any working files.
|
---|
| 576 |
|
---|
| 577 |
|
---|
| 578 | # Attempt to convert a word document to html with the wv program
|
---|
| 579 | sub doc_to_html {
|
---|
[22429] | 580 | my ($input_filename, $output_filestem) = @_;
|
---|
[1445] | 581 |
|
---|
[24371] | 582 | my $wvware_status = 0;
|
---|
[24375] | 583 |
|
---|
[24371] | 584 | # need to ensure that the path to perl is quoted (in case there's spaces in it)
|
---|
[24513] | 585 | my $launch_cmd = "\"".&util::get_perl_exec()."\" -S wvware.pl \"$input_filename\" \"$output_filestem\" \"$faillogfile\" $verbosity $timeout";
|
---|
[15120] | 586 |
|
---|
[30683] | 587 | # print STDERR "***** wvware launch cmd = $launch_cmd\n";
|
---|
[15120] | 588 |
|
---|
[24371] | 589 | $wvware_status = system($launch_cmd)/256;
|
---|
| 590 | return $wvware_status;
|
---|
[1445] | 591 | }
|
---|
| 592 |
|
---|
[10282] | 593 | # Attempt to convert a word document to html with the word2html scripting program
|
---|
| 594 | sub native_doc_to_html {
|
---|
[22429] | 595 | my ($input_filename, $output_filestem) = @_;
|
---|
[1445] | 596 |
|
---|
[24166] | 597 | # build up the path to the doc-to-html conversion tool we're going to use
|
---|
[27509] | 598 | my $vbScript = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "bin", $ENV{'GSDLOS'});
|
---|
[10282] | 599 |
|
---|
[24164] | 600 | if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
|
---|
[24166] | 601 | # if windows scripting with docx input, use new VBscript to get the local Word install (if
|
---|
| 602 | # any) to do the conversion, since docX can't be processed by word2html's windows_scripting
|
---|
| 603 |
|
---|
| 604 | if($input_filename =~ m/docx$/i) { # need to use full path to docx2html script,
|
---|
| 605 | # else script launch fails when there are error msgs
|
---|
[27509] | 606 | $vbScript = &FileUtils::filenameConcatenate($vbScript, "docx2html.vbs");
|
---|
[28355] | 607 | $vbScript = "CScript //Nologo \"$vbScript\""; # launch with CScript for error output in STDERR
|
---|
[24169] | 608 | # //Nologo flag avoids Microsoft's opening/logo msgs
|
---|
| 609 | print STDERR "About to use windows scripting to process docx file $input_filename.\n";
|
---|
| 610 | print STDERR " This may take some time. Please wait...\n";
|
---|
[24166] | 611 | }
|
---|
| 612 | else { # old doc versions. use the usual VB executable word2html for the
|
---|
| 613 | # conversion. Doesn't need full path, since bin\windows is on PATH
|
---|
[27509] | 614 | $vbScript = "word2html"; #$vbScript = "\"".&FileUtils::filenameConcatenate($vbScript, "word2html")."\"";
|
---|
[24166] | 615 | }
|
---|
| 616 | }
|
---|
| 617 | else { # not windows
|
---|
[27509] | 618 | $vbScript = "\"".&FileUtils::filenameConcatenate($vbScript, "word2html")."\"";
|
---|
[24164] | 619 | }
|
---|
| 620 |
|
---|
[10445] | 621 | if (-e "$output_filestem.html") {
|
---|
[22429] | 622 | print STDERR " The conversion file:\n";
|
---|
| 623 | print STDERR " $output_filestem.html\n";
|
---|
| 624 | print STDERR " ... already exists. Skipping\n";
|
---|
[10445] | 625 | return 1;
|
---|
| 626 | }
|
---|
[10282] | 627 |
|
---|
| 628 | my $cmd = "";
|
---|
| 629 | if ($timeout) {$cmd = "ulimit -t $timeout;";}
|
---|
| 630 | #$cmd .= "$vbScript \"$input_filename\" \"$output_filestem.html\"";
|
---|
[10445] | 631 | #$cmd .= "$vbScript $input_filename $output_filestem.html";
|
---|
[10521] | 632 | $cmd .= "$vbScript \"$input_filename\" \"$output_filestem.html\"";
|
---|
[10445] | 633 |
|
---|
[10282] | 634 | # redirecting STDERR
|
---|
[24166] | 635 |
|
---|
| 636 | $cmd .= " 2> \"$output_filestem.err\""
|
---|
| 637 | if ($ENV {'GSDLOS'} !~ m/^windows$/i || $is_winnt_2000);
|
---|
| 638 | #print STDERR "@@@@@@@@@ cmd=$cmd\n";
|
---|
| 639 |
|
---|
[10282] | 640 | # execute the command
|
---|
| 641 | $!=0;
|
---|
| 642 | if (system($cmd)!=0)
|
---|
| 643 | {
|
---|
[24164] | 644 | print STDERR "Error executing $vbScript converter:$!\n";
|
---|
[10282] | 645 | if (-s "$output_filestem.err") {
|
---|
| 646 | open (ERRFILE, "<$output_filestem.err");
|
---|
[24166] | 647 |
|
---|
[10282] | 648 | my $write_to_fail_log=0;
|
---|
| 649 | if ($faillogfile ne "" && defined(open(FAILLOG,">>$faillogfile")))
|
---|
| 650 | {$write_to_fail_log=1;}
|
---|
| 651 |
|
---|
| 652 | my $line;
|
---|
| 653 | while ($line=<ERRFILE>) {
|
---|
[16435] | 654 | if ($line =~ m/\w/) {
|
---|
[10282] | 655 | print STDERR "$line";
|
---|
| 656 | print FAILLOG "$line" if ($write_to_fail_log);
|
---|
| 657 | }
|
---|
| 658 | if ($line !~ m/startup error/) {next;}
|
---|
| 659 | print STDERR " (given an invalid .DOC file?)\n";
|
---|
| 660 | print FAILLOG " (given an invalid .DOC file?)\n"
|
---|
| 661 | if ($write_to_fail_log);
|
---|
| 662 |
|
---|
| 663 | } # while ERRFILE
|
---|
| 664 | close FAILLOG if ($write_to_fail_log);
|
---|
| 665 | }
|
---|
| 666 | return 0; # we can try any_to_text
|
---|
| 667 | }
|
---|
| 668 |
|
---|
| 669 | # Was the conversion successful?
|
---|
| 670 | if (-s "$output_filestem.html") {
|
---|
| 671 | open(TMP, "$output_filestem.html");
|
---|
[22429] | 672 | my $line = <TMP>;
|
---|
[10282] | 673 | close(TMP);
|
---|
[22429] | 674 | if ($line && $line =~ m/html/i) {
|
---|
[27509] | 675 | &FileUtils::removeFiles("$output_filestem.err") if -e "$output_filestem.err";
|
---|
[10282] | 676 | return 1;
|
---|
| 677 | }
|
---|
| 678 | }
|
---|
| 679 |
|
---|
| 680 | # If here, an error of some sort occurred
|
---|
[27509] | 681 | &FileUtils::removeFiles("$output_filestem.html") if -e "$output_filestem.html";
|
---|
[10282] | 682 | if (-e "$output_filestem.err") {
|
---|
| 683 | if ($faillogfile ne "" && defined(open(FAILLOG,">>$faillogfile"))) {
|
---|
| 684 | open (ERRLOG,"$output_filestem.err");
|
---|
| 685 | while (<ERRLOG>) {print FAILLOG $_;}
|
---|
| 686 | close FAILLOG;
|
---|
| 687 | close ERRLOG;
|
---|
| 688 | }
|
---|
[27509] | 689 | &FileUtils::removeFiles("$output_filestem.err");
|
---|
[10282] | 690 | }
|
---|
| 691 | return 0;
|
---|
| 692 | }
|
---|
| 693 |
|
---|
[1654] | 694 | # Attempt to convert an RTF document to html with rtftohtml
|
---|
| 695 | sub rtf_to_html {
|
---|
[2241] | 696 | my ($input_filename, $output_filestem) = @_;
|
---|
[1654] | 697 |
|
---|
| 698 | # formulate the command
|
---|
[22429] | 699 | my $cmd = "";
|
---|
[1692] | 700 | if ($timeout) {$cmd = "ulimit -t $timeout;";}
|
---|
[2574] | 701 | $cmd .= "rtftohtml";
|
---|
[10282] | 702 | #$cmd .= "rtf-converter";
|
---|
[1654] | 703 |
|
---|
[3246] | 704 | $cmd .= " -o \"$output_filestem.html\" \"$input_filename\"";
|
---|
[2574] | 705 |
|
---|
| 706 | $cmd .= " 2>\"$output_filestem.err\""
|
---|
[16435] | 707 | if ($ENV{'GSDLOS'} !~ m/^windows$/i || $is_winnt_2000);
|
---|
[2574] | 708 |
|
---|
| 709 |
|
---|
[1654] | 710 | # execute the command
|
---|
[2755] | 711 | $!=0;
|
---|
[2060] | 712 | if (system($cmd)!=0)
|
---|
[1654] | 713 | {
|
---|
[2755] | 714 | print STDERR "Error executing rtf converter $!\n";
|
---|
[2656] | 715 | # don't currently bother printing out error log...
|
---|
| 716 | # keep going, in case it still created an HTML file...
|
---|
[1654] | 717 | }
|
---|
| 718 |
|
---|
| 719 | # Was the conversion successful?
|
---|
[2755] | 720 | my $was_successful=0;
|
---|
[2656] | 721 | if (-s "$output_filestem.html") {
|
---|
[2755] | 722 | # make sure we have some content other than header
|
---|
| 723 | open (HTML, "$output_filestem.html"); # what to do if fail?
|
---|
| 724 | my $line;
|
---|
| 725 | my $past_header=0;
|
---|
| 726 | while ($line=<HTML>) {
|
---|
| 727 |
|
---|
| 728 | if ($past_header == 0) {
|
---|
[16435] | 729 | if ($line =~ m/<body>/) {$past_header=1;}
|
---|
[2755] | 730 | next;
|
---|
| 731 | }
|
---|
| 732 |
|
---|
| 733 | $line =~ s/<[^>]+>//g;
|
---|
[16435] | 734 | if ($line =~ m/\w/ && $past_header) { # we found some content...
|
---|
[2755] | 735 | $was_successful=1;
|
---|
| 736 | last;
|
---|
| 737 | }
|
---|
| 738 | }
|
---|
| 739 | close HTML;
|
---|
[1654] | 740 | }
|
---|
[2574] | 741 |
|
---|
[2755] | 742 | if ($was_successful) {
|
---|
[27509] | 743 | &FileUtils::removeFiles("$output_filestem.err")
|
---|
[2755] | 744 | if (-e "$output_filestem.err");
|
---|
| 745 | # insert the (modified) table of contents, if it exists.
|
---|
| 746 | if (-e "${output_filestem}_ToC.html") {
|
---|
[27509] | 747 | &FileUtils::moveFiles("$output_filestem.html","$output_filestem.src");
|
---|
[2755] | 748 | my $open_failed=0;
|
---|
| 749 | open HTMLSRC, "$output_filestem.src" || ++$open_failed;
|
---|
| 750 | open TOC, "${output_filestem}_ToC.html" || ++$open_failed;
|
---|
| 751 | open HTML, ">$output_filestem.html" || ++$open_failed;
|
---|
| 752 |
|
---|
| 753 | if ($open_failed) {
|
---|
| 754 | close HTMLSRC;
|
---|
| 755 | close TOC;
|
---|
| 756 | close HTML;
|
---|
[27509] | 757 | &FileUtils::moveFiles("$output_filestem.src","$output_filestem.html");
|
---|
[2755] | 758 | return 1;
|
---|
| 759 | }
|
---|
| 760 |
|
---|
| 761 | # print out header info from src html.
|
---|
[16435] | 762 | while (defined($_ = <HTMLSRC>) && $_ =~ m/\w/) {
|
---|
[2755] | 763 | print HTML "$_";
|
---|
| 764 | }
|
---|
| 765 |
|
---|
| 766 | # print out table of contents, making links relative
|
---|
| 767 | <TOC>; <TOC>; # ignore first 2 lines
|
---|
| 768 | print HTML scalar(<TOC>); # line 3 = "<ol>\n"
|
---|
| 769 | my $line;
|
---|
| 770 | while ($line=<TOC>) {
|
---|
[22429] | 771 | $line =~ s@</body></html>$@@i ; # only last line has this
|
---|
[2755] | 772 | # make link relative
|
---|
[22429] | 773 | $line =~ s@href=\"[^\#]+@href=\"@i;
|
---|
[2755] | 774 | print HTML $line;
|
---|
| 775 | }
|
---|
| 776 | close TOC;
|
---|
| 777 |
|
---|
| 778 | # rest of html src
|
---|
| 779 | while (<HTMLSRC>) {
|
---|
| 780 | print HTML $_;
|
---|
| 781 | }
|
---|
| 782 | close HTMLSRC;
|
---|
| 783 | close HTML;
|
---|
| 784 |
|
---|
[27509] | 785 | &FileUtils::removeFiles("${output_filestem}_ToC.html");
|
---|
| 786 | &FileUtils::removeFiles("${output_filestem}.src");
|
---|
[2755] | 787 | }
|
---|
| 788 | # we don't yet do anything with footnotes ($output_filestem_fn.html) :(
|
---|
| 789 | return 1; # success
|
---|
| 790 | }
|
---|
| 791 |
|
---|
| 792 | if (-e "$output_filestem.err") {
|
---|
| 793 | if ($faillogfile ne "" && defined(open(FAILLOG,">>$faillogfile")))
|
---|
| 794 | {
|
---|
| 795 | print FAILLOG "Error - rtftohtml - couldn't extract text\n";
|
---|
[10282] | 796 | #print FAILLOG "Error - rtf-converter - couldn't extract text\n";
|
---|
[2755] | 797 | print FAILLOG " (rtf file might be too recent):\n";
|
---|
| 798 | open (ERRLOG, "$output_filestem.err");
|
---|
| 799 | while (<ERRLOG>) {print FAILLOG $_;}
|
---|
| 800 | close ERRLOG;
|
---|
| 801 | close FAILLOG;
|
---|
| 802 | }
|
---|
[27509] | 803 | &FileUtils::removeFiles("$output_filestem.err");
|
---|
[2755] | 804 | }
|
---|
| 805 |
|
---|
[27509] | 806 | &FileUtils::removeFiles("$output_filestem.html") if (-e "$output_filestem.html");
|
---|
[2656] | 807 |
|
---|
[1654] | 808 | return 0;
|
---|
| 809 | }
|
---|
| 810 |
|
---|
| 811 |
|
---|
[32205] | 812 | # Convert a pdf file to html with the old pdftohtml command
|
---|
| 813 | # which only works for older PDF versions
|
---|
[1445] | 814 | sub pdf_to_html {
|
---|
[2755] | 815 | my ($dirname, $input_filename, $output_filestem) = @_;
|
---|
[1445] | 816 |
|
---|
[22429] | 817 | my $cmd = "";
|
---|
[1692] | 818 | if ($timeout) {$cmd = "ulimit -t $timeout;";}
|
---|
[24362] | 819 | my $full_perl_path = &util::get_perl_exec();
|
---|
[24124] | 820 | $cmd .= "\"$full_perl_path\" -S pdftohtml.pl -zoom $pdf_zoom";
|
---|
[3720] | 821 | $cmd .= " -c" if ($pdf_complex);
|
---|
| 822 | $cmd .= " -i" if ($pdf_ignore_images);
|
---|
[10451] | 823 | $cmd .= " -a" if ($pdf_allow_images_only);
|
---|
[4103] | 824 | $cmd .= " -hidden" unless ($pdf_nohidden);
|
---|
[1928] | 825 | $cmd .= " \"$input_filename\" \"$output_filestem\"";
|
---|
[2755] | 826 |
|
---|
[16435] | 827 | if ($ENV{'GSDLOS'} !~ m/^windows$/i || $is_winnt_2000) {
|
---|
[2755] | 828 | $cmd .= " > \"$output_filestem.out\" 2> \"$output_filestem.err\"";
|
---|
| 829 | } else {
|
---|
| 830 | $cmd .= " > \"$output_filestem.err\"";
|
---|
| 831 | }
|
---|
| 832 |
|
---|
[2117] | 833 | $!=0;
|
---|
[2241] | 834 |
|
---|
[2656] | 835 | my $retval=system($cmd);
|
---|
| 836 | if ($retval!=0)
|
---|
[1445] | 837 | {
|
---|
[2755] | 838 | print STDERR "Error executing pdftohtml.pl";
|
---|
[2117] | 839 | if ($!) {print STDERR ": $!";}
|
---|
| 840 | print STDERR "\n";
|
---|
[1445] | 841 | }
|
---|
| 842 |
|
---|
[1692] | 843 | # make sure the converter made something
|
---|
[2656] | 844 | if ($retval!=0 || ! -s "$output_filestem.html")
|
---|
[1692] | 845 | {
|
---|
[27509] | 846 | &FileUtils::removeFiles("$output_filestem.out") if (-e "$output_filestem.out");
|
---|
[2656] | 847 | # print out the converter's std err, if any
|
---|
| 848 | if (-s "$output_filestem.err") {
|
---|
[1692] | 849 | open (ERRLOG, "$output_filestem.err") || die "$!";
|
---|
[2755] | 850 | print STDERR "pdftohtml error log:\n";
|
---|
[1692] | 851 | while (<ERRLOG>) {
|
---|
| 852 | print STDERR "$_";
|
---|
| 853 | }
|
---|
| 854 | close ERRLOG;
|
---|
| 855 | }
|
---|
[24608] | 856 | #print STDERR "***********output filestem $output_filestem.html\n";
|
---|
[27509] | 857 | &FileUtils::removeFiles("$output_filestem.html") if (-e "$output_filestem.html");
|
---|
[2755] | 858 | if (-e "$output_filestem.err") {
|
---|
| 859 | if ($faillogfile ne "" && defined(open(FAILLOG,">>$faillogfile")))
|
---|
| 860 | {
|
---|
| 861 | open (ERRLOG, "$output_filestem.err");
|
---|
| 862 | while (<ERRLOG>) {print FAILLOG $_;}
|
---|
| 863 | close ERRLOG;
|
---|
| 864 | close FAILLOG;
|
---|
| 865 | }
|
---|
[27509] | 866 | &FileUtils::removeFiles("$output_filestem.err");
|
---|
[2755] | 867 | }
|
---|
[1692] | 868 | return 0;
|
---|
| 869 | }
|
---|
[10357] | 870 |
|
---|
[27509] | 871 | &FileUtils::removeFiles("$output_filestem.err") if (-e "$output_filestem.err");
|
---|
| 872 | &FileUtils::removeFiles("$output_filestem.out") if (-e "$output_filestem.out");
|
---|
[10357] | 873 | return 1;
|
---|
| 874 | }
|
---|
| 875 |
|
---|
[32205] | 876 |
|
---|
| 877 | # Convert a pdf file to html with the newer Xpdftools' pdftohtml
|
---|
| 878 | # This generates "paged HTML" where extracted, selectable text is positioned
|
---|
| 879 | # over screenshots of each page.
|
---|
| 880 | # Since xpdf's pdftohtml fails if the output dir already exists and for easier
|
---|
| 881 | # naming, the output files are created in a "pages" subdirectory of the tmp
|
---|
| 882 | # location parent of $output_filestem instead
|
---|
| 883 | sub xpdf_to_html {
|
---|
| 884 | my ($dirname, $input_filename, $output_filestem) = @_;
|
---|
| 885 |
|
---|
| 886 | my $cmd = "";
|
---|
| 887 |
|
---|
| 888 | # build up the path to the doc-to-html conversion tool we're going to use
|
---|
[32224] | 889 | my $xpdf_pdftohtml = &FileUtils::filenameConcatenate(_get_xpdftools_bindir(), "pdftohtml");
|
---|
[32209] | 890 |
|
---|
[32205] | 891 | # We'll create the file by name $output_filestem during post-conversion processing.
|
---|
| 892 | # Note that Xpdf tools will only create its conversion products in a dir that does
|
---|
| 893 | # not yet exist. So we'll create this location as a subdir of the output_filestem's
|
---|
| 894 | # parent directory. The parent dir is the already generated tmp area for conversion. So:
|
---|
| 895 | # - tmpdir gs2build/tmp/<random-num> already exists at this stage
|
---|
| 896 | # - We'll create gs2build/tmp/<rand>/output_filestem.html later, during post-processing
|
---|
| 897 | # - For now, XPdftools will create gs2build/tmp/<rand>/pages and put its products in there.
|
---|
| 898 | my ($tailname, $tmp_dirname, $suffix)
|
---|
| 899 | = &File::Basename::fileparse($output_filestem, "\\.[^\\.]+\$");
|
---|
| 900 | $tmp_dirname = &FileUtils::filenameConcatenate($tmp_dirname, "pages");
|
---|
[32224] | 901 |
|
---|
[32205] | 902 | # xpdf's pdftohtml tool also takes a zoom factor, where a zoom of 1 is 100%
|
---|
| 903 | $cmd .= "\"$xpdf_pdftohtml\"";
|
---|
[32284] | 904 | # resolution, -r in DPI of background images, see https://www.xpdfreader.com/pdftohtml-man.html
|
---|
| 905 | $cmd .= " -r $pdf_dpi" if ($pdf_dpi);
|
---|
[32205] | 906 | $cmd .= " \"$input_filename\" \"$tmp_dirname\"";
|
---|
| 907 | #$cmd .= " \"$input_filename\" \"$output_filestem\"";
|
---|
| 908 |
|
---|
| 909 | if ($ENV{'GSDLOS'} !~ m/^windows$/i || $is_winnt_2000) {
|
---|
| 910 | $cmd .= " > \"$output_filestem.out\" 2> \"$output_filestem.err\"";
|
---|
| 911 | } else {
|
---|
| 912 | $cmd .= " > \"$output_filestem.err\"";
|
---|
| 913 | }
|
---|
| 914 |
|
---|
| 915 | #print STDERR "@@@@ Running command: $cmd\n";
|
---|
| 916 |
|
---|
| 917 | $!=0;
|
---|
| 918 | my $retval=system($cmd);
|
---|
| 919 | if ($retval!=0)
|
---|
| 920 | {
|
---|
| 921 | print STDERR "Error executing xpdf's pdftohtml tool";
|
---|
| 922 | if ($!) {print STDERR ": $!";}
|
---|
| 923 | print STDERR "\n";
|
---|
| 924 | }
|
---|
| 925 |
|
---|
| 926 | # make sure the converter made something
|
---|
| 927 | if ($retval!=0 || ! -s &FileUtils::filenameConcatenate($tmp_dirname,"index.html"))
|
---|
| 928 | {
|
---|
| 929 | &FileUtils::removeFiles("$output_filestem.out") if (-e "$output_filestem.out");
|
---|
| 930 | # print out the converter's std err, if any
|
---|
| 931 | if (-s "$output_filestem.err") {
|
---|
| 932 | open (ERRLOG, "$output_filestem.err") || die "$!";
|
---|
| 933 | print STDERR "pdftohtml error log:\n";
|
---|
| 934 | while (<ERRLOG>) {
|
---|
| 935 | print STDERR "$_";
|
---|
| 936 | }
|
---|
| 937 | close ERRLOG;
|
---|
| 938 | }
|
---|
| 939 | #print STDERR "***********output filestem $output_filestem.html\n";
|
---|
| 940 | &FileUtils::removeFiles("$tmp_dirname") if (-d "$tmp_dirname");
|
---|
| 941 | if (-e "$output_filestem.err") {
|
---|
| 942 | if ($faillogfile ne "" && defined(open(FAILLOG,">>$faillogfile")))
|
---|
| 943 | {
|
---|
| 944 | open (ERRLOG, "$output_filestem.err");
|
---|
| 945 | while (<ERRLOG>) {print FAILLOG $_;}
|
---|
| 946 | close ERRLOG;
|
---|
| 947 | close FAILLOG;
|
---|
| 948 | }
|
---|
| 949 | &FileUtils::removeFiles("$output_filestem.err");
|
---|
| 950 | }
|
---|
| 951 | return 0;
|
---|
| 952 | }
|
---|
| 953 |
|
---|
| 954 | &FileUtils::removeFiles("$output_filestem.err") if (-e "$output_filestem.err");
|
---|
| 955 | &FileUtils::removeFiles("$output_filestem.out") if (-e "$output_filestem.out");
|
---|
| 956 | return 1;
|
---|
| 957 | }
|
---|
| 958 |
|
---|
[32224] | 959 | # Returns the path to xpdf-tools's containing bin dir appropriate for this machine's OS and bitness
|
---|
| 960 | sub _get_xpdftools_bindir {
|
---|
[32205] | 961 |
|
---|
[32263] | 962 | # build up the path to the containing bin dir of the xpdf conversion tool we're going to use
|
---|
| 963 | my $xpdf_tools_bin = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "bin", $ENV{'GSDLOS'}, "xpdf-tools", "bin");
|
---|
| 964 | return $xpdf_tools_bin;
|
---|
[32224] | 965 | }
|
---|
[32205] | 966 |
|
---|
[10357] | 967 | # Convert a pdf file to various types of image with the convert command
|
---|
| 968 |
|
---|
[17329] | 969 | sub pdfps_to_img {
|
---|
[10357] | 970 | my ($dirname, $input_filename, $output_filestem, $output_type) = @_;
|
---|
[10401] | 971 |
|
---|
| 972 | # Check that ImageMagick is installed and available on the path (except for Windows 95/98)
|
---|
| 973 | if (!($ENV{'GSDLOS'} eq "windows" && !Win32::IsWinNT())) {
|
---|
[24600] | 974 | my $imagick_cmd = "\"".&util::get_perl_exec()."\" -S gs-magick.pl";
|
---|
[24763] | 975 | $imagick_cmd = $imagick_cmd." --verbosity=$verbosity" if defined $verbosity;
|
---|
[24600] | 976 | my $result = `$imagick_cmd identify 2>&1`;
|
---|
| 977 |
|
---|
| 978 | # Linux and Windows return different values for "program not found".
|
---|
| 979 | # Linux returns -1 and Windows 256 for "program not found". But once they're
|
---|
| 980 | # converted to signed values, it will be -1 for Linux and 1 for Windows.
|
---|
| 981 | # Whenever we test for return values other than 0, shift by 8 and perform
|
---|
| 982 | # unsigned to signed status conversion on $? to get expected range of return vals
|
---|
| 983 | # Although gs-magick.pl already shifts its $? by 8, converts it to a signed value
|
---|
| 984 | # and then exits on that, by the time we get here, we need to do it again
|
---|
| 985 | my $status = $?;
|
---|
| 986 | $status >>= 8;
|
---|
| 987 | $status = (($status & 0x80) ? -(0x100 - ($status & 0xFF)) : $status);
|
---|
[25798] | 988 | if (($ENV{'GSDLOS'} ne "windows" && $status == -1) || ($ENV{'GSDLOS'} eq "windows" && $status == 1)) {
|
---|
| 989 | # if ($status == -1 || $status == 1) #if ($status == -1 || $status == 256) {
|
---|
[10401] | 990 | #ImageMagick is not installed, thus the convert utility is not available.
|
---|
[25798] | 991 | print STDERR "*** ImageMagick is not installed, the convert utility is not available. Unable to convert PDF/PS to images. Status: $status\n";
|
---|
[10401] | 992 | return 0;
|
---|
| 993 | }
|
---|
| 994 | }
|
---|
| 995 |
|
---|
[22429] | 996 | my $cmd = "";
|
---|
[10357] | 997 | if ($timeout) {$cmd = "ulimit -t $timeout;";}
|
---|
| 998 | $output_type =~ s/.*\_(.*)/$1/i;
|
---|
[24362] | 999 | my $full_perl_path = &util::get_perl_exec();
|
---|
[24124] | 1000 | $cmd .= "\"$full_perl_path\" -S pdfpstoimg.pl -convert_to $output_type \"$input_filename\" \"$output_filestem\"";
|
---|
[16435] | 1001 | if ($ENV{'GSDLOS'} !~ m/^windows$/i || $is_winnt_2000) {
|
---|
[10357] | 1002 | $cmd .= " > \"$output_filestem.out\" 2> \"$output_filestem.err\"";
|
---|
| 1003 | } else {
|
---|
| 1004 | $cmd .= " > \"$output_filestem.err\"";
|
---|
| 1005 | }
|
---|
| 1006 |
|
---|
| 1007 | # don't include path on windows (to avoid having to play about
|
---|
| 1008 | # with quoting when GSDLHOME might contain spaces) but assume
|
---|
| 1009 | # that the PATH is set up correctly
|
---|
| 1010 | $!=0;
|
---|
| 1011 | my $retval=system($cmd);
|
---|
| 1012 | if ($retval!=0)
|
---|
| 1013 | {
|
---|
[28166] | 1014 | print STDERR "Error executing pdfpstoimg.pl";
|
---|
[10357] | 1015 | if ($!) {print STDERR ": $!";}
|
---|
| 1016 | print STDERR "\n";
|
---|
| 1017 | }
|
---|
| 1018 |
|
---|
| 1019 | #make sure the converter made something
|
---|
| 1020 | #if ($retval !=0) || ! -s "$output_filestem")
|
---|
| 1021 | if ($retval !=0)
|
---|
| 1022 | {
|
---|
[27509] | 1023 | &FileUtils::removeFiles("$output_filestem.out") if (-e "$output_filestem.out");
|
---|
[10357] | 1024 | #print out the converter's std err, if any
|
---|
| 1025 | if (-s "$output_filestem.err") {
|
---|
| 1026 | open (ERRLOG, "$output_filestem.err") || die "$!";
|
---|
[17329] | 1027 | print STDERR "pdfpstoimg error log:\n";
|
---|
[10357] | 1028 | while (<ERRLOG>) {
|
---|
| 1029 | print STDERR "$_";
|
---|
| 1030 | }
|
---|
| 1031 | close ERRLOG;
|
---|
| 1032 | }
|
---|
[27509] | 1033 | #&FileUtils::removeFiles("$output_filestem.html") if (-e "$output_filestem.html");
|
---|
[10357] | 1034 | if (-e "$output_filestem.err") {
|
---|
| 1035 | if ($faillogfile ne "" && defined(open(FAILLOG,">>$faillogfile")))
|
---|
| 1036 | {
|
---|
| 1037 | open (ERRLOG, "$output_filestem.err");
|
---|
| 1038 | while (<ERRLOG>) {print FAILLOG $_;}
|
---|
| 1039 | close ERRLOG;
|
---|
| 1040 | close FAILLOG;
|
---|
| 1041 | }
|
---|
[27509] | 1042 | &FileUtils::removeFiles("$output_filestem.err");
|
---|
[10357] | 1043 | }
|
---|
| 1044 | return 0;
|
---|
| 1045 | }
|
---|
[27509] | 1046 | &FileUtils::removeFiles("$output_filestem.err") if (-e "$output_filestem.err");
|
---|
| 1047 | &FileUtils::removeFiles("$output_filestem.out") if (-e "$output_filestem.out");
|
---|
[1445] | 1048 | return 1;
|
---|
| 1049 | }
|
---|
| 1050 |
|
---|
[32224] | 1051 | # Convert a PDF file to text with xpdftools' pdftotext command
|
---|
| 1052 | # Works for Windows too, whereas the old pdftotxt didn't
|
---|
| 1053 | sub xpdf_to_text {
|
---|
[32277] | 1054 | my ($dirname, $input_filename, $output_filestem, $output_type) = @_;
|
---|
[32224] | 1055 |
|
---|
| 1056 | my $cmd = "";
|
---|
| 1057 |
|
---|
| 1058 | # build up the path to the doc-to-txt conversion tool we're going to use
|
---|
| 1059 | my $xpdf_pdftotxt = &FileUtils::filenameConcatenate(_get_xpdftools_bindir(), "pdftotext");
|
---|
| 1060 |
|
---|
| 1061 | # For xpdf's pdftotxt options, see https://www.xpdfreader.com/pdftotext-man.html
|
---|
| 1062 | $cmd .= "\"$xpdf_pdftotxt\"";
|
---|
| 1063 | if($enc) {
|
---|
| 1064 | $cmd .= " -enc $enc"; # decode the bytes in the file using the designated encoding scheme
|
---|
| 1065 | } else {
|
---|
| 1066 | # as per https://www.xpdfreader.com/pdftotext-man.html
|
---|
| 1067 | # xpdf's pdftotxt defaults to using Latin-1 encoding, should we default to UTF-8?
|
---|
| 1068 | $cmd .= " -enc UTF-8"; # see https://www.xpdfreader.com/xpdfrc-man.html
|
---|
| 1069 | }
|
---|
[32277] | 1070 |
|
---|
| 1071 | if ($output_type ne "paged_text") { # output_type eq "text", don't bother about page break markers
|
---|
[32224] | 1072 | $cmd .= " -nopgbrk";
|
---|
[32277] | 1073 | }
|
---|
[32224] | 1074 | # Avoid the silly solitary carriage returns (CR in Notepad) at the end
|
---|
| 1075 | # of lines that ends up as \n appended to the doc title
|
---|
| 1076 | # by setting the end of line marker to unix style solitary newline (LF or \n),
|
---|
| 1077 | # which doesn't end up in the doc title
|
---|
| 1078 | $cmd .= " -eol unix";
|
---|
| 1079 | $cmd .= " \"$input_filename\" \"$output_filestem.text\"";
|
---|
| 1080 |
|
---|
| 1081 | print STDERR "@@@@ Running command: $cmd\n";
|
---|
| 1082 |
|
---|
| 1083 | return _run_pdf_to_text_cmd($cmd, $output_filestem);
|
---|
| 1084 | }
|
---|
| 1085 |
|
---|
[1445] | 1086 | # Convert a PDF file to text with the pdftotext command
|
---|
| 1087 |
|
---|
| 1088 | sub pdf_to_text {
|
---|
[2755] | 1089 | my ($dirname, $input_filename, $output_filestem) = @_;
|
---|
[1445] | 1090 |
|
---|
[2248] | 1091 | my $cmd = "pdftotext \"$input_filename\" \"$output_filestem.text\"";
|
---|
[32224] | 1092 |
|
---|
| 1093 | return _run_pdf_to_text_cmd($cmd, $output_filestem);
|
---|
| 1094 | }
|
---|
[2755] | 1095 |
|
---|
[32224] | 1096 | sub _run_pdf_to_text_cmd {
|
---|
| 1097 | my ($cmd, $output_filestem) = @_;
|
---|
| 1098 |
|
---|
[16435] | 1099 | if ($ENV{'GSDLOS'} !~ m/^windows$/i) {
|
---|
[2755] | 1100 | $cmd .= " > \"$output_filestem.out\" 2> \"$output_filestem.err\"";
|
---|
| 1101 | } else {
|
---|
| 1102 | $cmd .= " > \"$output_filestem.err\"";
|
---|
| 1103 | }
|
---|
[1445] | 1104 |
|
---|
[2060] | 1105 | if (system($cmd)!=0)
|
---|
[1445] | 1106 | {
|
---|
| 1107 | print STDERR "Error executing $cmd: $!\n";
|
---|
[27509] | 1108 | &FileUtils::removeFiles("$output_filestem.text") if (-e "$output_filestem.text");
|
---|
[1445] | 1109 | }
|
---|
| 1110 |
|
---|
[2755] | 1111 | # make sure there is some extracted text.
|
---|
| 1112 | if (-e "$output_filestem.text") {
|
---|
| 1113 | open (EXTR_TEXT, "$output_filestem.text") || warn "open: $!";
|
---|
| 1114 | binmode(EXTR_TEXT); # just in case...
|
---|
| 1115 | my $line="";
|
---|
| 1116 | my $seen_text=0;
|
---|
| 1117 | while (($seen_text==0) && ($line=<EXTR_TEXT>)) {
|
---|
[16435] | 1118 | if ($line=~ m/\w/) {$seen_text=1;}
|
---|
[2755] | 1119 | }
|
---|
| 1120 | close EXTR_TEXT;
|
---|
| 1121 | if ($seen_text==0) { # no text was extracted
|
---|
| 1122 | print STDERR "Error: pdftotext found no text\n";
|
---|
[27509] | 1123 | &FileUtils::removeFiles("$output_filestem.text");
|
---|
[2755] | 1124 | }
|
---|
| 1125 | }
|
---|
| 1126 |
|
---|
[1692] | 1127 | # make sure the converter made something
|
---|
[2656] | 1128 | if (! -s "$output_filestem.text")
|
---|
[1692] | 1129 | {
|
---|
| 1130 | # print out the converters std err, if any
|
---|
[2656] | 1131 | if (-s "$output_filestem.err") {
|
---|
[1692] | 1132 | open (ERRLOG, "$output_filestem.err") || die "$!";
|
---|
[2755] | 1133 | print STDERR "pdftotext error log:\n";
|
---|
[1692] | 1134 | while (<ERRLOG>) {
|
---|
| 1135 | print STDERR "$_";
|
---|
| 1136 | }
|
---|
| 1137 | close ERRLOG;
|
---|
| 1138 | }
|
---|
[2656] | 1139 | # does this converter create a .out file?
|
---|
[27509] | 1140 | &FileUtils::removeFiles("$output_filestem.out") if (-e "$output_filestem.out");
|
---|
| 1141 | &FileUtils::removeFiles("$output_filestem.text") if (-e "$output_filestem.text");
|
---|
[2755] | 1142 | if (-e "$output_filestem.err") {
|
---|
| 1143 | if ($faillogfile ne "" && defined(open(FAILLOG,">>$faillogfile")))
|
---|
| 1144 | {
|
---|
| 1145 | open (ERRLOG,"$output_filestem.err");
|
---|
| 1146 | while (<ERRLOG>) {print FAILLOG $_;}
|
---|
| 1147 | close ERRLOG;
|
---|
| 1148 | close FAILLOG;
|
---|
| 1149 | }
|
---|
[27509] | 1150 | &FileUtils::removeFiles("$output_filestem.err");
|
---|
[2755] | 1151 | }
|
---|
[1692] | 1152 | return 0;
|
---|
| 1153 | }
|
---|
[27509] | 1154 | &FileUtils::removeFiles("$output_filestem.err") if (-e "$output_filestem.err");
|
---|
[1445] | 1155 | return 1;
|
---|
| 1156 | }
|
---|
| 1157 |
|
---|
[2012] | 1158 | # Convert a PostScript document to text
|
---|
| 1159 | # note - just using "ps2ascii" isn't good enough, as it
|
---|
| 1160 | # returns 0 for a postscript interpreter error. ps2ascii is just
|
---|
| 1161 | # a wrapper to "gs" anyway, so we use that cmd here.
|
---|
[1445] | 1162 |
|
---|
| 1163 | sub ps_to_text {
|
---|
[2241] | 1164 | my ($input_filename, $output_filestem) = @_;
|
---|
[1445] | 1165 |
|
---|
[2241] | 1166 | my $error = "";
|
---|
| 1167 |
|
---|
| 1168 | # if we're on windows we'll fall straight through without attempting
|
---|
| 1169 | # to use gs
|
---|
[16435] | 1170 | if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
|
---|
[2241] | 1171 | $error = "Windows does not support gs";
|
---|
| 1172 |
|
---|
| 1173 | } else {
|
---|
[3538] | 1174 | my $cmd = "";
|
---|
| 1175 | if ($timeout) {$cmd = "ulimit -t $timeout; ";}
|
---|
| 1176 | $cmd .= "gs -q -dNODISPLAY -dNOBIND -dWRITESYSTEMDICT -dSIMPLE -c save ";
|
---|
[2241] | 1177 | $cmd .= "-f ps2ascii.ps \"$input_filename\" -c quit > \"$output_filestem.text\"";
|
---|
[10357] | 1178 | #$cmd .= "pstotext -output \"$output_filestem.text\" $input_filename\"";
|
---|
[2241] | 1179 | $cmd .= " 2> $output_filestem.err";
|
---|
| 1180 | $!=0;
|
---|
[10357] | 1181 |
|
---|
[2241] | 1182 | my $retcode=system($cmd);
|
---|
| 1183 | $retcode = $? >> 8; # see man perlfunc - system for this...
|
---|
| 1184 | # if system returns -1 | 127 (couldn't start program), look at $! for message
|
---|
| 1185 |
|
---|
| 1186 | if ($retcode!=0) {if ($!) {$error=$!;} else {$error="couldn't run.\n";}}
|
---|
| 1187 | elsif (! -e "$output_filestem.text") {
|
---|
| 1188 | $error="did not create output file.\n";
|
---|
[2012] | 1189 | }
|
---|
[2241] | 1190 | else
|
---|
| 1191 | { # make sure the interpreter didn't get an error. It is technically
|
---|
| 1192 | # possible for the actual text to start with this, but....
|
---|
| 1193 | open PSOUT, "$output_filestem.text";
|
---|
[16435] | 1194 | if (<PSOUT> =~ m/^Error: (.*)/) {
|
---|
[2241] | 1195 | $error="interpreter error - \"$1\"";
|
---|
| 1196 | }
|
---|
| 1197 | close PSOUT;
|
---|
| 1198 | }
|
---|
[2012] | 1199 | }
|
---|
[2241] | 1200 |
|
---|
[2012] | 1201 | if ($error ne "")
|
---|
[1445] | 1202 | {
|
---|
[2755] | 1203 | print STDERR "Warning: Error executing gs: $error\n";
|
---|
[30724] | 1204 | print STDERR "Resorting to Perl regular expressions to extract text from PostScript...\n";
|
---|
[27509] | 1205 | &FileUtils::removeFiles("$output_filestem.text") if (-e "$output_filestem.text");
|
---|
[2755] | 1206 |
|
---|
| 1207 | if ("$faillogfile" ne "" && defined(open (FAILLOG, ">>$faillogfile")))
|
---|
| 1208 | {
|
---|
| 1209 | print FAILLOG "gs - $error\n";
|
---|
| 1210 | if (-e "$output_filestem.err") {
|
---|
| 1211 | open(ERRLOG, "$output_filestem.err");
|
---|
| 1212 | while (<ERRLOG>) {print FAILLOG $_;}
|
---|
| 1213 | close ERRLOG;
|
---|
| 1214 | }
|
---|
| 1215 | close FAILLOG;
|
---|
| 1216 | }
|
---|
[27509] | 1217 | &FileUtils::removeFiles("$output_filestem.err") if (-e "$output_filestem.err");
|
---|
[2012] | 1218 |
|
---|
[2755] | 1219 |
|
---|
[2012] | 1220 | # Fine then. We'll just do a lousy job by ourselves...
|
---|
[2031] | 1221 | # Based on 5-line regexp sed script found at:
|
---|
[2012] | 1222 | # http://snark.ptc.spbu.ru/mail-archives/lout/brown/msg00003.html
|
---|
| 1223 | #
|
---|
[2755] | 1224 | print STDERR "Stripping text from postscript\n";
|
---|
[2012] | 1225 | my $errorcode=0;
|
---|
| 1226 | open (IN, "$input_filename")
|
---|
| 1227 | || ($errorcode=1, warn "Couldn't read file: $!");
|
---|
| 1228 | open (OUT, ">$output_filestem.text")
|
---|
| 1229 | || ($errorcode=1, warn "Couldn't write file: $!");
|
---|
| 1230 | if ($errorcode) {print STDERR "errors\n";return 0;}
|
---|
| 1231 |
|
---|
[2031] | 1232 | my $text=""; # this is for whole .ps file...
|
---|
[2755] | 1233 | $text = join('', <IN>); # see man perlport, under "System Resources"
|
---|
[2031] | 1234 | close IN;
|
---|
| 1235 |
|
---|
[2447] | 1236 | # Make sure this is a ps file...
|
---|
[16435] | 1237 | if ($text !~ m/^%!/) {
|
---|
[2755] | 1238 | print STDERR "Bad postscript header: not '%!'\n";
|
---|
| 1239 | if ($faillogfile ne "" && defined(open(FAILLOG, ">>$faillogfile")))
|
---|
| 1240 | {
|
---|
| 1241 | print FAILLOG "Bad postscript header: not '%!'\n";
|
---|
| 1242 | close FAILLOG;
|
---|
| 1243 | }
|
---|
[2447] | 1244 | return 0;
|
---|
| 1245 | }
|
---|
| 1246 |
|
---|
[2031] | 1247 | # if ps has Page data, then use it to delete all stuff before it.
|
---|
| 1248 | $text =~ s/^.*?%%Page:.*?\n//s; # treat string as single line
|
---|
| 1249 |
|
---|
| 1250 | # remove all leading non-data stuff
|
---|
| 1251 | $text =~ s/^.*?\(//s;
|
---|
| 1252 |
|
---|
| 1253 | # remove all newline chars for easier processing
|
---|
| 1254 | $text =~ s/\n//g;
|
---|
| 1255 |
|
---|
| 1256 | # Big assumption here - assume that if any co-ordinates are
|
---|
| 1257 | # given, then we are at the end of a sentence.
|
---|
| 1258 | $text =~ s/\)-?\d+\ -?\d+/\) \(\n\)/g;
|
---|
| 1259 |
|
---|
| 1260 | # special characters--
|
---|
| 1261 | $text =~ s/\(\|\)/\(\ - \)/g; # j -> em-dash?
|
---|
| 1262 |
|
---|
| 1263 | # ? ps text formatting (eg italics?) ?
|
---|
| 1264 | $text =~ s/Fn\(f\)/\(\{\)/g; # f -> {
|
---|
| 1265 | $text =~ s/Fn\(g\)/\(\}\)/g; # g -> }
|
---|
| 1266 | $text =~ s/Fn\(j\)/\(\|\)/g; # j -> |
|
---|
| 1267 | # default - remove the rest
|
---|
| 1268 | $text =~ s/\ ?F.\((.+?)\)/\($1\)/g;
|
---|
| 1269 |
|
---|
| 1270 | # attempt to add whitespace between words...
|
---|
| 1271 | # this is based purely on observation, and may be completely wrong...
|
---|
| 1272 | $text =~ s/([^F])[defghijkuy]\(/$1 \( /g;
|
---|
| 1273 | # eg I notice "b(" is sometimes NOT a space if preceded by a
|
---|
| 1274 | # negative number.
|
---|
| 1275 | $text =~ s/\)\d+ ?b\(/\) \( /g;
|
---|
| 1276 |
|
---|
| 1277 | # change quoted braces to brackets
|
---|
| 1278 | $text =~ s/([^\\])\\\(/$1\{/g;
|
---|
| 1279 | $text =~ s/([^\\])\\\)/$1\}/g ;
|
---|
| 1280 |
|
---|
| 1281 | # remove everything that is not between braces
|
---|
| 1282 | $text =~ s/\)([^\(\)])+?\(//sg ;
|
---|
| 1283 |
|
---|
| 1284 | # remove any Trailer eof stuff.
|
---|
| 1285 | $text =~ s/\)[^\)]*$//sg;
|
---|
| 1286 |
|
---|
| 1287 | ### ligatures have special characters...
|
---|
| 1288 | $text =~ s/\\013/ff/g;
|
---|
| 1289 | $text =~ s/\\014/fi/g;
|
---|
| 1290 | $text =~ s/\\015/fl/g;
|
---|
| 1291 | $text =~ s/\\016/ffi/g;
|
---|
| 1292 | $text =~ s/\\214/fi/g;
|
---|
| 1293 | $text =~ s/\\215/fl/g;
|
---|
| 1294 | $text =~ s/\\017/\n\* /g; # asterisk?
|
---|
| 1295 | $text =~ s/\\023/\023/g; # e acute ('e)
|
---|
| 1296 | $text =~ s/\\177/\252/g; # u"
|
---|
| 1297 | # $text =~ s/ ?? /\344/g; # a"
|
---|
| 1298 |
|
---|
| 1299 | print OUT "$text";
|
---|
| 1300 | close OUT;
|
---|
[1960] | 1301 | }
|
---|
[2600] | 1302 | # wrap the text - use a minimum length. ie, first space after this length.
|
---|
| 1303 | my $wrap_length=72;
|
---|
[27509] | 1304 | &FileUtils::moveFiles("$output_filestem.text", "$output_filestem.text.tmp");
|
---|
[2600] | 1305 | open INFILE, "$output_filestem.text.tmp" ||
|
---|
| 1306 | die "Couldn't open file: $!";
|
---|
| 1307 | open OUTFILE, ">$output_filestem.text" ||
|
---|
| 1308 | die "Couldn't open file for writing: $!";
|
---|
| 1309 | my $line="";
|
---|
| 1310 | while ($line=<INFILE>) {
|
---|
| 1311 | while (length($line)>0) {
|
---|
| 1312 | if (length($line)>$wrap_length) {
|
---|
| 1313 | $line =~ s/^(.{$wrap_length}[^\s]*)\s*//;
|
---|
| 1314 | print OUTFILE "$1\n";
|
---|
| 1315 | } else {
|
---|
| 1316 | print OUTFILE "$line";
|
---|
| 1317 | $line="";
|
---|
| 1318 | }
|
---|
| 1319 | }
|
---|
| 1320 | }
|
---|
| 1321 | close INFILE;
|
---|
| 1322 | close OUTFILE;
|
---|
[27509] | 1323 | &FileUtils::removeFiles("$output_filestem.text.tmp");
|
---|
[2600] | 1324 |
|
---|
[27509] | 1325 | &FileUtils::removeFiles("$output_filestem.err") if (-e "$output_filestem.err");
|
---|
[1445] | 1326 | return 1;
|
---|
| 1327 | }
|
---|
| 1328 |
|
---|
| 1329 |
|
---|
| 1330 | # Convert any file to HTML with a crude perl implementation of the
|
---|
| 1331 | # UNIX strings command.
|
---|
| 1332 |
|
---|
| 1333 | sub any_to_html {
|
---|
[22429] | 1334 | my ($input_filename, $output_filestem) = @_;
|
---|
[1445] | 1335 |
|
---|
| 1336 | # First generate a text file
|
---|
| 1337 | return 0 unless (&any_to_text($input_filename, $output_filestem));
|
---|
| 1338 |
|
---|
| 1339 | # create an HTML file from the text file
|
---|
| 1340 | open(TEXT, "<$output_filestem.text");
|
---|
| 1341 | open(HTML, ">$output_filestem.html");
|
---|
| 1342 |
|
---|
[2241] | 1343 | print HTML "<html><head>\n";
|
---|
| 1344 | print HTML "<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html\">\n";
|
---|
| 1345 | print HTML "<META NAME=\"GENERATOR\" CONTENT=\"Greenstone any_to_html\">\n";
|
---|
| 1346 | print HTML "</head><body>\n\n";
|
---|
[1734] | 1347 |
|
---|
[2755] | 1348 | my $line;
|
---|
| 1349 | while ($line=<TEXT>) {
|
---|
| 1350 | $line =~ s/</</g;
|
---|
| 1351 | $line =~ s/>/>/g;
|
---|
[16435] | 1352 | if ($line =~ m/^\s*$/) {
|
---|
[2755] | 1353 | print HTML "<p>";
|
---|
| 1354 | } else {
|
---|
| 1355 | print HTML "<br> ", $line;
|
---|
| 1356 | }
|
---|
[1445] | 1357 | }
|
---|
[1734] | 1358 | print HTML "\n</body></html>\n";
|
---|
[1445] | 1359 |
|
---|
[2241] | 1360 | close HTML;
|
---|
| 1361 | close TEXT;
|
---|
| 1362 |
|
---|
[27509] | 1363 | &FileUtils::removeFiles("$output_filestem.text") if (-e "$output_filestem.text");
|
---|
[1445] | 1364 | return 1;
|
---|
| 1365 | }
|
---|
| 1366 |
|
---|
| 1367 | # Convert any file to TEXT with a crude perl implementation of the
|
---|
| 1368 | # UNIX strings command.
|
---|
[2755] | 1369 | # Note - this assumes ascii charsets :( (jrm21)
|
---|
[1445] | 1370 |
|
---|
| 1371 | sub any_to_text {
|
---|
[22429] | 1372 | my ($input_filename, $output_filestem) = @_;
|
---|
[1445] | 1373 |
|
---|
[3350] | 1374 | if (!$use_strings) {
|
---|
| 1375 | return 0;
|
---|
| 1376 | }
|
---|
[15120] | 1377 |
|
---|
| 1378 | print STDERR "\n**** In any to text****\n\n";
|
---|
[2755] | 1379 | open(IN, "<$input_filename") || return 0;
|
---|
[1734] | 1380 | binmode(IN);
|
---|
[2755] | 1381 | open(OUT, ">$output_filestem.text") || return 0;
|
---|
[1445] | 1382 |
|
---|
| 1383 | my ($line);
|
---|
[2755] | 1384 | my $output_line_count = 0;
|
---|
[1445] | 1385 | while (<IN>) {
|
---|
| 1386 | $line = $_;
|
---|
[1734] | 1387 |
|
---|
[1445] | 1388 | # delete anything that isn't a printable character
|
---|
| 1389 | $line =~ s/[^\040-\176]+/\n/sg;
|
---|
| 1390 |
|
---|
| 1391 | # delete any string less than 10 characters long
|
---|
[1734] | 1392 | $line =~ s/^.{0,9}$/\n/mg;
|
---|
[16435] | 1393 | while ($line =~ m/^.{1,9}$/m) {
|
---|
[1734] | 1394 | $line =~ s/^.{0,9}$/\n/mg;
|
---|
[1445] | 1395 | $line =~ s/\n+/\n/sg;
|
---|
| 1396 | }
|
---|
| 1397 |
|
---|
| 1398 | # remove extraneous whitespace
|
---|
| 1399 | $line =~ s/\n+/\n/gs;
|
---|
| 1400 | $line =~ s/^\n//gs;
|
---|
[1578] | 1401 |
|
---|
[1445] | 1402 | # output whatever is left
|
---|
[16435] | 1403 | if ($line =~ m/[^\n ]/) {
|
---|
[1445] | 1404 | print OUT $line;
|
---|
[2755] | 1405 | ++$output_line_count;
|
---|
[1445] | 1406 | }
|
---|
| 1407 | }
|
---|
[2241] | 1408 |
|
---|
| 1409 | close OUT;
|
---|
| 1410 | close IN;
|
---|
| 1411 |
|
---|
[2755] | 1412 | if ($output_line_count) { # try to protect against binary only formats
|
---|
| 1413 | return 1;
|
---|
| 1414 | }
|
---|
| 1415 |
|
---|
[27509] | 1416 | &FileUtils::removeFiles("$output_filestem.text");
|
---|
[2755] | 1417 | return 0;
|
---|
| 1418 |
|
---|
[1445] | 1419 | }
|
---|