source: main/trunk/greenstone2/perllib/util.pm@ 32847

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1###########################################################################
2#
3# util.pm -- various useful utilities
4# A component of the Greenstone digital library software
5# from the New Zealand Digital Library Project at the
6# University of Waikato, New Zealand.
7#
8# Copyright (C) 1999 New Zealand Digital Library Project
9#
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2 of the License, or
13# (at your option) any later version.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program; if not, write to the Free Software
22# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23#
24###########################################################################
25
26package util;
27
28use strict;
29no strict 'refs'; # make an exception so we can use variables as filehandles
30use FileUtils;
31
32use Encode;
33use Unicode::Normalize 'normalize';
34
35use File::Copy;
36use File::Basename;
37# Config for getting the perlpath in the recommended way, though it uses paths that are
38# hard-coded into the Config file that's generated upon configuring and compiling perl.
39# $^X works better in some cases to return the path to perl used to launch the script,
40# but if launched with plain "perl" (no full-path), that will be just what it returns.
41use Config;
42# New module for file related utility functions - intended as a
43# placeholder for an extension that allows a variety of different
44# filesystems (FTP, HTTP, SAMBA, WEBDav, HDFS etc)
45use FileUtils;
46
47if ($ENV{'GSDLOS'} =~ /^windows$/i) {
48 require Win32; # for working out Windows Long Filenames from Win 8.3 short filenames
49}
50
51# removes files (but not directories)
52sub rm {
53 warnings::warnif("deprecated", "util::rm() is deprecated, using FileUtils::removeFiles() instead");
54 return &FileUtils::removeFiles(@_);
55}
56
57# recursive removal
58sub filtered_rm_r {
59 warnings::warnif("deprecated", "util::filtered_rm_r() is deprecated, using FileUtils::removeFilesFiltered() instead");
60 return &FileUtils::removeFilesFiltered(@_);
61}
62
63# recursive removal
64sub rm_r {
65 warnings::warnif("deprecated", "util::rm_r() is deprecated, using FileUtils::removeFilesRecursive() instead");
66 return &FileUtils::removeFilesRecursive(@_);
67}
68
69# moves a file or a group of files
70sub mv {
71 warnings::warnif("deprecated", "util::mv() is deprecated, using FileUtils::moveFiles() instead");
72 return &FileUtils::moveFiles(@_);
73}
74
75# Move the contents of source directory into target directory
76# (as opposed to merely replacing target dir with the src dir)
77# This can overwrite any files with duplicate names in the target
78# but other files and folders in the target will continue to exist
79sub mv_dir_contents {
80 warnings::warnif("deprecated", "util::mv_dir_contents() is deprecated, using FileUtils::moveDirectoryContents() instead");
81 return &FileUtils::moveDirectoryContents(@_);
82}
83
84# copies a file or a group of files
85sub cp {
86 warnings::warnif("deprecated", "util::cp() is deprecated, using FileUtils::copyFiles() instead");
87 return &FileUtils::copyFiles(@_);
88}
89
90# recursively copies a file or group of files
91# syntax: cp_r (sourcefiles, destination directory)
92# destination must be a directory - to copy one file to
93# another use cp instead
94sub cp_r {
95 warnings::warnif("deprecated", "util::cp_r() is deprecated, using FileUtils::copyFilesrecursive() instead");
96 return &FileUtils::copyFilesRecursive(@_);
97}
98
99# recursively copies a file or group of files
100# syntax: cp_r (sourcefiles, destination directory)
101# destination must be a directory - to copy one file to
102# another use cp instead
103sub cp_r_nosvn {
104 warnings::warnif("deprecated", "util::cp_r_nosvn() is deprecated, using FileUtils::copyFilesRecursiveNoSVN() instead");
105 return &FileUtils::copyFilesRecursiveNoSVN(@_);
106}
107
108# copies a directory and its contents, excluding subdirectories, into a new directory
109sub cp_r_toplevel {
110 warnings::warnif("deprecated", "util::cp_r_toplevel() is deprecated, using FileUtils::recursiveCopyTopLevel() instead");
111 return &FileUtils::recursiveCopyTopLevel(@_);
112}
113
114sub mk_dir {
115 warnings::warnif("deprecated", "util::mk_dir() is deprecated, using FileUtils::makeDirectory() instead");
116 return &FileUtils::makeDirectory(@_);
117}
118
119# in case anyone cares - I did some testing (using perls Benchmark module)
120# on this subroutine against File::Path::mkpath (). mk_all_dir() is apparently
121# slightly faster (surprisingly) - Stefan.
122sub mk_all_dir {
123 warnings::warnif("deprecated", "util::mk_all_dir() is deprecated, using FileUtils::makeAllDirectories() instead");
124 return &FileUtils::makeAllDirectories(@_);
125}
126
127# make hard link to file if supported by OS, otherwise copy the file
128sub hard_link {
129 warnings::warnif("deprecated", "util::hard_link() is deprecated, using FileUtils::hardLink() instead");
130 return &FileUtils::hardLink(@_);
131}
132
133# make soft link to file if supported by OS, otherwise copy file
134sub soft_link {
135 warnings::warnif("deprecated", "util::soft_link() is deprecated, using FileUtils::softLink() instead");
136 return &FileUtils::softLink(@_);
137}
138
139# Primarily for filenames generated by processing
140# content of HTML files (which are mapped to UTF-8 internally)
141#
142# To turn this into an octet string that really exists on the file
143# system:
144# 1. don't need to do anything special for Unix-based systems
145# (as underlying file system is byte-code)
146# 2. need to map to short DOS filenames for Windows
147
148sub utf8_to_real_filename
149{
150 my ($utf8_filename) = @_;
151
152 my $real_filename;
153
154 if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
155 require Win32;
156
157 my $unicode_filename = decode("utf8",$utf8_filename);
158 $real_filename = Win32::GetShortPathName($unicode_filename);
159 }
160 else {
161 $real_filename = $utf8_filename;
162 }
163
164 return $real_filename;
165}
166
167sub raw_filename_to_unicode
168{
169 my ($directory, $raw_file, $filename_encoding ) = @_;
170
171 my $unicode_filename = $raw_file;
172 if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
173 # Try turning a short version to the long version
174 # If there are "funny" characters in the file name, that can't be represented in the ANSI code, then we will have a short weird version, eg E74~1.txt
175 $unicode_filename = &util::get_dirsep_tail(&util::upgrade_if_dos_filename(&FileUtils::filenameConcatenate($directory, $raw_file), 0));
176
177
178 if ($unicode_filename eq $raw_file) {
179 # This means the original filename *was* able to be encoded in the local ANSI file encoding (eg windows_1252), so now we turn it back to perl's unicode
180
181 $unicode_filename = &Encode::decode(locale_fs => $unicode_filename);
182 }
183 # else This means we did have one of the funny filenames. the getLongPathName (used in upgrade_if_dos_filename) will return unicode, so we don't need to do anything more.
184
185
186 } else {
187 # we had a utf-8 string, turn it into perl internal unicode
188 $unicode_filename = &Encode::decode("utf-8", $unicode_filename);
189
190
191 }
192 #Does the filename have url encoded chars in it?
193 if (&unicode::is_url_encoded($unicode_filename)) {
194 $unicode_filename = &unicode::url_decode($unicode_filename);
195 }
196
197 # Normalise the filename to canonical composition - on mac, filenames use decopmposed form for accented chars
198 if ($ENV{'GSDLOS'} =~ m/^darwin$/i) {
199 $unicode_filename = normalize('C', $unicode_filename); # Composed form 'C'
200 }
201 return $unicode_filename;
202
203}
204sub fd_exists {
205 warnings::warnif("deprecated", "util::fd_exists() is deprecated, using FileUtils::fileTest() instead");
206 return &FileUtils::fileTest(@_);
207}
208
209sub file_exists {
210 warnings::warnif("deprecated", "util::file_exists() is deprecated, using FileUtils::fileExists() instead");
211 return &FileUtils::fileExists(@_);
212}
213
214sub dir_exists {
215 warnings::warnif("deprecated", "util::dir_exists() is deprecated, using FileUtils::directoryExists() instead");
216 return &FileUtils::directoryExists(@_);
217}
218
219# updates a copy of a directory in some other part of the filesystem
220# verbosity settings are: 0=low, 1=normal, 2=high
221# both $fromdir and $todir should be absolute paths
222sub cachedir {
223 warnings::warnif("deprecated", "util::cachedir() is deprecated, using FileUtils::synchronizeDirectories() instead");
224 return &FileUtils::synchronizeDirectories(@_);
225}
226
227# this function returns -1 if either file is not found
228# assumes that $file1 and $file2 are absolute file names or
229# in the current directory
230# $file2 is allowed to be newer than $file1
231sub differentfiles {
232 warnings::warnif("deprecated", "util::differentfiles() is deprecated, using FileUtils::differentFiles() instead");
233 return &FileUtils::differentFiles(@_);
234}
235
236
237# works out the temporary directory, including in the case where Greenstone is not writable
238# In that case, gs3-setup.bat would already have set the GS_TMP_OUTPUT_DIR temp variable
239sub determine_tmp_dir
240{
241 my $try_collect_dir = shift(@_) || 0;
242
243 my $tmp_dirname;
244 if(defined $ENV{'GS_TMP_OUTPUT_DIR'}) {
245 $tmp_dirname = $ENV{'GS_TMP_OUTPUT_DIR'};
246 } elsif($try_collect_dir && defined $ENV{'GSDLCOLLECTDIR'}) {
247 $tmp_dirname = $ENV{'GSDLCOLLECTDIR'};
248 } elsif(defined $ENV{'GSDLHOME'}) {
249 $tmp_dirname = $ENV{'GSDLHOME'};
250 } else {
251 return undef;
252 }
253
254 if(!defined $ENV{'GS_TMP_OUTPUT_DIR'}) {
255 # test the tmp_dirname folder is writable, by trying to write out a file
256 # Unfortunately, cound not get if(-w $dirname) to work on directories on Windows
257 ## http://alvinalexander.com/blog/post/perl/perl-file-test-operators-reference-cheat-sheet (test file/dir writable)
258 ## http://www.makelinux.net/alp/083 (real and effective user IDs)
259
260 my $tmp_test_file = &FileUtils::filenameConcatenate($tmp_dirname, "writability_test.tmp");
261 if (open (FOUT, ">$tmp_test_file")) {
262 close(FOUT);
263 &FileUtils::removeFiles($tmp_test_file);
264 } else { # location not writable, use TMP location
265 if (defined $ENV{'TMP'}) {
266 $tmp_dirname = $ENV{'TMP'};
267 } else {
268 $tmp_dirname = "/tmp";
269 }
270 $tmp_dirname = &FileUtils::filenameConcatenate($tmp_dirname, "greenstone");
271 $ENV{'GS_TMP_OUTPUT_DIR'} = $tmp_dirname; # store for next time
272 }
273 }
274
275 $tmp_dirname = &FileUtils::filenameConcatenate($tmp_dirname, "tmp");
276 &FileUtils::makeAllDirectories ($tmp_dirname) unless -e $tmp_dirname;
277
278 return $tmp_dirname;
279}
280
281sub get_tmp_filename
282{
283 my $file_ext = shift(@_) || undef;
284
285 my $opt_dot_file_ext = "";
286 if (defined $file_ext) {
287 if ($file_ext !~ m/\./) {
288 # no dot, so needs one added in at start
289 $opt_dot_file_ext = ".$file_ext"
290 }
291 else {
292 # allow for "extensions" such as _metadata.txt to be handled
293 # gracefully
294 $opt_dot_file_ext = $file_ext;
295 }
296 }
297
298 my $tmpdir = &util::determine_tmp_dir(0);
299
300 my $count = 1000;
301 my $rand = int(rand $count);
302 my $full_tmp_filename = &FileUtils::filenameConcatenate($tmpdir, "F$rand$opt_dot_file_ext");
303
304 while (-e $full_tmp_filename) {
305 $rand = int(rand $count);
306 $full_tmp_filename = &FileUtils::filenameConcatenate($tmpdir, "F$rand$opt_dot_file_ext");
307 $count++;
308 }
309
310 return $full_tmp_filename;
311}
312
313# These 2 are "static" variables used by the get_timestamped_tmp_folder() subroutine below and
314# belong with that function. They help ensure the timestamped tmp folders generated are unique.
315my $previous_timestamp = undef;
316my $previous_timestamp_f = 0; # frequency
317
318sub get_timestamped_tmp_folder
319{
320 my $tmp_dirname = &util::determine_tmp_dir(1);
321
322 # add the timestamp into the path otherwise we can run into problems
323 # if documents have the same name
324 my $timestamp = time;
325
326 if (!defined $previous_timestamp || ($timestamp > $previous_timestamp)) {
327 $previous_timestamp_f = 0;
328 $previous_timestamp = $timestamp;
329 } else {
330 $previous_timestamp_f++;
331 }
332
333 my $time_tmp_dirname = &FileUtils::filenameConcatenate($tmp_dirname, $timestamp);
334 $tmp_dirname = $time_tmp_dirname;
335 my $i = $previous_timestamp_f;
336
337 if($previous_timestamp_f > 0) {
338 $tmp_dirname = $time_tmp_dirname."_".$i;
339 $i++;
340 }
341 while (-e $tmp_dirname) {
342 $tmp_dirname = $time_tmp_dirname."_".$i;
343 $i++;
344 }
345 &FileUtils::makeDirectory($tmp_dirname);
346
347 return $tmp_dirname;
348}
349
350sub get_timestamped_tmp_filename_in_collection
351{
352
353 my ($input_filename, $output_ext) = @_;
354 # derive tmp filename from input filename
355 my ($tailname, $dirname, $suffix)
356 = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
357
358 # softlink to collection tmp dir
359 my $tmp_dirname = &util::get_timestamped_tmp_folder();
360 $tmp_dirname = $dirname unless defined $tmp_dirname;
361
362 # following two steps copied from ConvertBinaryFile
363 # do we need them?? can't use them as is, as they use plugin methods.
364
365 #$tailname = $self->SUPER::filepath_to_utf8($tailname) unless &unicode::check_is_utf8($tailname);
366
367 # URLEncode this since htmls with images where the html filename is utf8 don't seem
368 # to work on Windows (IE or Firefox), as browsers are looking for filesystem-encoded
369 # files on the filesystem.
370 #$tailname = &util::rename_file($tailname, $self->{'file_rename_method'}, "without_suffix");
371 if (defined $output_ext) {
372 $output_ext = ".$output_ext"; # add the dot
373 } else {
374 $output_ext = $suffix;
375 }
376 $output_ext= lc($output_ext);
377 my $tmp_filename = &FileUtils::filenameConcatenate($tmp_dirname, "$tailname$output_ext");
378
379 return $tmp_filename;
380}
381
382sub get_toplevel_tmp_dir
383{
384 return &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "tmp");
385}
386
387
388sub get_collectlevel_tmp_dir
389{
390 my $tmp_dirname = &FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'}, "tmp");
391 &FileUtils::makeDirectory($tmp_dirname) if (!-e $tmp_dirname);
392
393 return $tmp_dirname;
394}
395
396sub get_parent_folder
397{
398 my ($path) = @_;
399 my ($tailname, $dirname, $suffix)
400 = &File::Basename::fileparse($path, "\\.[^\\.]+\$");
401
402 return &FileUtils::sanitizePath($dirname);
403}
404
405sub filename_to_regex {
406 my $filename = shift (@_);
407
408 # need to make single backslashes double so that regex works
409 $filename =~ s/\\/\\\\/g; # if ($ENV{'GSDLOS'} =~ /^windows$/i);
410
411 # note that the first part of a substitution is a regex, so RE chars need to be escaped,
412 # the second part of a substitution is not a regex, so for e.g. full-stop can be specified literally
413 $filename =~ s/\./\\./g; # in case there are extensions/other full stops, escape them
414 $filename =~ s@\(@\\(@g; # escape brackets
415 $filename =~ s@\)@\\)@g; # escape brackets
416 $filename =~ s@\[@\\[@g; # escape brackets
417 $filename =~ s@\]@\\]@g; # escape brackets
418
419 return $filename;
420}
421
422sub unregex_filename {
423 my $filename = shift (@_);
424
425 # need to put doubled backslashes for regex back to single
426 $filename =~ s/\\\./\./g; # remove RE syntax for .
427 $filename =~ s@\\\(@(@g; # remove RE syntax for ( => "\(" turns into "("
428 $filename =~ s@\\\)@)@g; # remove RE syntax for ) => "\)" turns into ")"
429 $filename =~ s@\\\[@[@g; # remove RE syntax for [ => "\[" turns into "["
430 $filename =~ s@\\\]@]@g; # remove RE syntax for ] => "\]" turns into "]"
431
432 # \\ goes to \
433 # This is the last step in reverse mirroring the order of steps in filename_to_regex()
434 $filename =~ s/\\\\/\\/g; # remove RE syntax for \
435 return $filename;
436}
437
438sub filename_cat {
439 # I've disabled this warning for now, as every Greenstone perl
440 # script seems to make use of this function and so you drown in a
441 # sea of deprecated warnings [jmt12]
442 # warnings::warnif("deprecated", "util::filename_cat() is deprecated, using FileUtils::filenameConcatenate() instead");
443 return &FileUtils::filenameConcatenate(@_);
444}
445
446
447sub _pathname_cat {
448 my $join_char = shift(@_);
449 my $first_path = shift(@_);
450 my (@pathnames) = @_;
451
452 # If first_path is not null or empty, then add it back into the list
453 if (defined $first_path && $first_path =~ /\S/) {
454 unshift(@pathnames, $first_path);
455 }
456
457 my $pathname = join($join_char, @pathnames);
458
459 # remove duplicate slashes
460 if ($join_char eq ";") {
461 $pathname =~ s/[\\\/]+/\\/g;
462 if ($^O eq "cygwin") {
463 # Once we've collapsed muliple (potentialy > 2) slashes
464 # For cygwin, actually want things double-backslahed
465 $pathname =~ s/\\/\\\\/g;
466 }
467
468 } else {
469 $pathname =~ s/[\/]+/\//g;
470 # DB: want a pathname abc\de.html to remain like this
471 }
472
473 return $pathname;
474}
475
476
477sub pathname_cat {
478 my (@pathnames) = @_;
479
480 my $join_char;
481 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
482 $join_char = ";";
483 } else {
484 $join_char = ":";
485 }
486 return _pathname_cat($join_char,@pathnames);
487}
488
489
490sub javapathname_cat {
491 my (@pathnames) = @_;
492
493 my $join_char;
494
495 # Unlike pathname_cat() above, not interested if running in a Cygwin environment
496 # This is because the java we run is actually a native Windows executable
497
498 if (($ENV{'GSDLOS'} =~ /^windows$/i)) {
499 $join_char = ";";
500 } else {
501 $join_char = ":";
502 }
503 return _pathname_cat($join_char,@pathnames);
504}
505
506
507sub makeFilenameJavaCygwinCompatible
508{
509 my ($java_filename) = @_;
510
511 if ($^O eq "cygwin") {
512 # To be used with a Java program, but under Cygwin
513 # Because the java binary that is native to Windows, need to
514 # convert the Cygwin paths (i.e. Unix style) to be Windows
515 # compatible
516
517 $java_filename = `cygpath -wp "$java_filename"`;
518 chomp($java_filename);
519 $java_filename =~ s%\\%\\\\%g;
520 }
521
522 return $java_filename;
523}
524
525sub tidy_up_oid {
526 my ($OID) = @_;
527 if ($OID =~ /[\.\/\\]/) {
528 print STDERR "Warning, identifier $OID contains periods or slashes(.\\\/), replacing them with _\n";
529 $OID =~ s/[\.\\\/]/_/g; #remove any periods
530 }
531 if ($OID =~ /^\s.*\s$/) {
532 print STDERR "Warning, identifier $OID starts or ends with whitespace. Removing it\n";
533 # remove starting and trailing whitespace
534 $OID =~ s/^\s+//;
535 $OID =~ s/\s+$//;
536 }
537 if ($OID =~ /^[\d]*$/) {
538 print STDERR "Warning, identifier $OID contains only digits. Prepending 'D'.\n";
539 $OID = "D" . $OID;
540 }
541
542 return $OID;
543}
544
545sub envvar_prepend {
546 my ($var,$val) = @_;
547
548 # 64 bit linux can't handle ";" as path separator, so make sure to set this to the right one for the OS
549 ## my $pathsep = (defined $ENV{'GSDLOS'} && $ENV{'GSDLOS'} !~ m/windows/) ? ":" : ";";
550
551 # Rewritten above to make ":" the default (Windows is the special
552 # case, anything else 'unusual' such as Solaris etc is Unix)
553 my $pathsep = (defined $ENV{'GSDLOS'} && (($ENV{'GSDLOS'} =~ m/windows/) && ($^O ne "cygwin"))) ? ";" : ":";
554
555 # do not prepend any value/path that's already in the environment variable
556
557 my $escaped_val = &filename_to_regex($val); # escape any backslashes and brackets for upcoming regex
558 if (!defined($ENV{$var})) {
559 $ENV{$var} = "$val";
560 }
561 elsif($ENV{$var} !~ m/$escaped_val/) {
562 $ENV{$var} = "$val".$pathsep.$ENV{$var};
563 }
564}
565
566sub envvar_append {
567 my ($var,$val) = @_;
568
569 # 64 bit linux can't handle ";" as path separator, so make sure to set this to the right one for the OS
570 my $pathsep = (defined $ENV{'GSDLOS'} && $ENV{'GSDLOS'} !~ m/windows/) ? ":" : ";";
571
572 # do not append any value/path that's already in the environment variable
573
574 my $escaped_val = &filename_to_regex($val); # escape any backslashes and brackets for upcoming regex
575 if (!defined($ENV{$var})) {
576 $ENV{$var} = "$val";
577 }
578 elsif($ENV{$var} !~ m/$escaped_val/) {
579 $ENV{$var} = $ENV{$var}.$pathsep."$val";
580 }
581}
582
583# debug aid
584sub print_env {
585 my ($handle, @envvars) = @_; # print to $handle, which can be STDERR/STDOUT/file, etc.
586
587 if (scalar(@envvars) == 0) {
588 #print $handle "@@@ All env vars requested\n";
589
590 my $output = "";
591
592 print $handle "@@@ Environment was:\n********\n";
593 foreach my $envvar (sort keys(%ENV)) {
594 if(defined $ENV{$envvar}) {
595 print $handle "\t$envvar = $ENV{$envvar}\n";
596 } else {
597 print $handle "\t$envvar = \n";
598 }
599 }
600 print $handle "********\n";
601 } else {
602 print $handle "@@@ Environment was:\n********\n";
603 foreach my $envvar (@envvars) {
604 if(defined $ENV{$envvar}) {
605 print $handle "\t$envvar = ".$ENV{$envvar}."\n";
606 } else {
607 print $handle "Env var '$envvar' was not set\n";
608 }
609 }
610 print $handle "********\n";
611 }
612}
613
614
615# splits a filename into a prefix and a tail extension using the tail_re, or
616# if that fails, splits on the file_extension . (dot)
617sub get_prefix_and_tail_by_regex {
618
619 my ($filename,$tail_re) = @_;
620
621 my ($file_prefix,$file_ext) = ($filename =~ m/^(.*?)($tail_re)$/);
622 if ((!defined $file_prefix) || (!defined $file_ext)) {
623 ($file_prefix,$file_ext) = ($filename =~ m/^(.*)(\..*?)$/);
624 }
625
626 return ($file_prefix,$file_ext);
627}
628
629# get full path and file only path from a base_dir (which may be empty) and
630# file (which may contain directories)
631sub get_full_filenames {
632 my ($base_dir, $file) = @_;
633
634 # my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(0);
635 # my ($lcfilename) = ($cfilename =~ m/([^\\\/]*)$/);
636 # print STDERR "** Calling method: $lcfilename:$cline $cpackage->$csubr\n";
637
638
639 my $filename_full_path = $file;
640 # add on directory if present
641 $filename_full_path = &FileUtils::filenameConcatenate($base_dir, $file) if $base_dir =~ /\S/;
642
643 my $filename_no_path = $file;
644
645 # remove directory if present
646 $filename_no_path =~ s/^.*[\/\\]//;
647 return ($filename_full_path, $filename_no_path);
648}
649
650# returns the path of a file without the filename -- ie. the directory the file is in
651sub filename_head {
652 my $filename = shift(@_);
653
654 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
655 $filename =~ s/[^\\\\]*$//;
656 }
657 else {
658 $filename =~ s/[^\\\/]*$//;
659 }
660
661 return $filename;
662}
663
664# Debug function to print the caller at the provided depth or else depth=1 (to skip the function
665# that called this one, which is at depth 0).
666sub debug_print_caller {
667 my $depth = shift(@_);
668 $depth = 1 unless $depth; # start at 1 to skip printing the function that called this one
669 my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller($depth);
670 my ($lcfilename) = ($cfilename =~ m/([^\\\/]*)$/);
671 print STDERR "** Calling method at depth $depth: $lcfilename:$cline $cpackage->$csubr\n";
672}
673
674# Debug function to print the call stack.
675# Optional param maxdepth: how many callers up the stack to print, *besides* this function's own
676# caller. If maxdepth parameter unspecified, prints the entire call stack.
677sub debug_print_call_stack {
678 my $maxdepth = shift(@_);
679 if($maxdepth) {
680 print STDERR "** CALL STACK UP TO AND INCL. MAX DEPTH OF $maxdepth:\n";
681 } else {
682 print STDERR "** FULL CALL STACK:\n";
683 }
684
685 my $depth = 0; # start by just printing this sub's calling function too
686 while(1) {
687 my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller($depth);
688 last unless (defined $cfilename && defined $cline && defined $cpackage); # when call stack printed in full
689 my ($lcfilename) = ($cfilename =~ m/([^\\\/]*)$/);
690 print STDERR "\t$lcfilename:$cline $cpackage->$csubr\n";
691 $depth++;
692 # print out caller at $maxdepth too, even though $depth starts at 0
693 # So this method prints out maxdepth+1 callers
694 last if($maxdepth && $depth > $maxdepth);
695 }
696 return "";
697}
698
699
700# returns 1 if filename1 and filename2 point to the same
701# file or directory
702sub filenames_equal {
703 my ($filename1, $filename2) = @_;
704
705 # use filename_cat to clean up trailing slashes and
706 # multiple slashes
707 $filename1 = &FileUtils::filenameConcatenate($filename1);
708 $filename2 = &FileUtils::filenameConcatenate($filename2);
709
710 # filenames not case sensitive on windows
711 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
712 $filename1 =~ tr/[A-Z]/[a-z]/;
713 $filename2 =~ tr/[A-Z]/[a-z]/;
714 }
715 return 1 if $filename1 eq $filename2;
716 return 0;
717}
718
719# If filename is relative to within_dir, returns the relative path of filename to that directory
720# with slashes in the filename returned as they were in the original (absolute) filename.
721sub filename_within_directory
722{
723 my ($filename,$within_dir) = @_;
724
725 if ($within_dir !~ m/[\/\\]$/) {
726 my $dirsep = &util::get_dirsep();
727 $within_dir .= $dirsep;
728 }
729
730 $within_dir = &filename_to_regex($within_dir); # escape DOS style file separator and brackets
731 if ($filename =~ m/^$within_dir(.*)$/) {
732 $filename = $1;
733 }
734
735 return $filename;
736}
737
738# If filename is relative to within_dir, returns the relative path of filename to that directory in URL format.
739# Filename and within_dir can be any type of slashes, but will be compared as URLs (i.e. unix-style slashes).
740# The subpath returned will also be a URL type filename.
741sub filename_within_directory_url_format
742{
743 my ($filename,$within_dir) = @_;
744
745 # convert parameters only to / slashes if Windows
746
747 my $filename_urlformat = &filepath_to_url_format($filename);
748 my $within_dir_urlformat = &filepath_to_url_format($within_dir);
749
750 #if ($within_dir_urlformat !~ m/\/$/) {
751 # make sure directory ends with a slash
752 #$within_dir_urlformat .= "/";
753 #}
754
755 my $within_dir_urlformat_re = &filename_to_regex($within_dir_urlformat); # escape any special RE characters, such as brackets
756
757 #print STDERR "@@@@@ $filename_urlformat =~ $within_dir_urlformat_re\n";
758
759 # dir prefix may or may not end with a slash (this is discarded when extracting the sub-filepath)
760 if ($filename_urlformat =~ m/^$within_dir_urlformat_re(?:\/)*(.*)$/) {
761 $filename_urlformat = $1;
762 }
763
764 return $filename_urlformat;
765}
766
767# Convert parameter to use / slashes if Windows (if on Linux leave any \ as is,
768# since on Linux it doesn't represent a file separator but an escape char).
769sub filepath_to_url_format
770{
771 my ($filepath) = @_;
772 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
773 # Only need to worry about Windows, as Unix style directories already in url-format
774 # Convert Windows style \ => /
775 $filepath =~ s@\\@/@g;
776 }
777 return $filepath;
778}
779
780# regex filepaths on windows may include \\ as path separator. Convert \\ to /
781sub filepath_regex_to_url_format
782{
783 my ($filepath) = @_;
784 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
785 # Only need to worry about Windows, as Unix style directories already in url-format
786 # Convert Windows style \\ => /
787 $filepath =~ s@\\\\@/@g;
788 }
789 return $filepath;
790
791}
792
793# Like File::Basename::fileparse, but expects filepath in url format (ie only / slash for dirsep)
794# and ignores trailing /
795# returns (file, dirs) dirs will be empty if no subdirs
796sub url_fileparse
797{
798 my ($filepath) = @_;
799 # remove trailing /
800 $filepath =~ s@/$@@;
801 if ($filepath !~ m@/@) {
802 return ($filepath, "");
803 }
804 my ($dirs, $file) = $filepath =~ m@(.+/)([^/]+)@;
805 return ($file, $dirs);
806
807}
808
809
810sub filename_within_collection
811{
812 my ($filename) = @_;
813
814 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
815
816 if (defined $collect_dir) {
817
818 # if from within GSDLCOLLECTDIR, then remove directory prefix
819 # so source_filename is realative to it. This is done to aid
820 # portability, i.e. the collection can be moved to somewhere
821 # else on the file system and the archives directory will still
822 # work. This is needed, for example in the applet version of
823 # GLI where GSDLHOME/collect on the server will be different to
824 # the collect directory of the remove user. Of course,
825 # GSDLCOLLECTDIR subsequently needs to be put back on to turn
826 # it back into a full pathname.
827
828 $filename = filename_within_directory($filename,$collect_dir);
829 }
830
831 return $filename;
832}
833
834sub prettyprint_file
835{
836 my ($base_dir,$file,$gli) = @_;
837
838 my $filename_full_path = &FileUtils::filenameConcatenate($base_dir,$file);
839
840 if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
841 require Win32;
842
843 # For some reason base_dir in the form c:/a/b/c
844 # This leads to confusion later on, so turn it back into
845 # the more usual Windows form
846 $base_dir =~ s/\//\\/g;
847 my $long_base_dir = Win32::GetLongPathName($base_dir);
848 my $long_full_path = Win32::GetLongPathName($filename_full_path);
849
850 $file = filename_within_directory($long_full_path,$long_base_dir);
851 $file = encode("utf8",$file) if ($gli);
852 }
853
854 return $file;
855}
856
857
858sub upgrade_if_dos_filename
859{
860 my ($filename_full_path,$and_encode) = @_;
861
862 if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
863 # Ensure any DOS-like filename, such as test~1.txt, has been upgraded
864 # to its long (Windows) version
865 # GetLongPathName doesn't work if the file doesn't exist - in this case, use the directory instead
866
867 if (-e $filename_full_path) {
868 my $long_filename = Win32::GetLongPathName($filename_full_path);
869 if (defined $long_filename) {
870
871 $filename_full_path = $long_filename;
872 }
873 } else {
874
875 my ($tailname, $dirname, $suffix)
876 = &File::Basename::fileparse($filename_full_path, "\\.[^\\.]+\$");
877 my $long_dirname = Win32::GetLongPathName($dirname);
878 if (defined $long_dirname) {
879 $filename_full_path = &FileUtils::filenameConcatenate($long_dirname, "$tailname$suffix");
880 }
881 }
882
883 # Make sure initial drive letter is lower-case (to fit in with rest of Greenstone)
884 $filename_full_path =~ s/^(.):/\u$1:/;
885
886 if ((defined $and_encode) && ($and_encode)) {
887 $filename_full_path = encode("utf8",$filename_full_path);
888 }
889 }
890
891 return $filename_full_path;
892}
893
894sub downgrade_if_dos_filename
895{
896 my ($filename_full_path) = @_;
897
898 if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
899 require Win32;
900
901 # Ensure the given long Windows filename is in a form that can
902 # be opened by Perl => convert it to a short DOS-like filename
903 # GetShortPathName doesn't work if the file doesn't exist - in this case, use the directory instead
904 if (-e $filename_full_path) {
905 my $short_filename = Win32::GetShortPathName($filename_full_path);
906 if (defined $short_filename) {
907 $filename_full_path = $short_filename;
908 }
909 } else {
910 my ($tailname, $dirname, $suffix)
911 = &File::Basename::fileparse($filename_full_path, "\\.[^\\.]+\$");
912 my $short_dirname = Win32::GetShortPathName($dirname);
913 if (defined $short_dirname) {
914 $filename_full_path = &FileUtils::filenameConcatenate($short_dirname, "$tailname$suffix");
915 }
916
917 }
918 # Make sure initial drive letter is lower-case (to fit in
919 # with rest of Greenstone)
920 $filename_full_path =~ s/^(.):/\u$1:/;
921 }
922
923 return $filename_full_path;
924}
925
926
927sub filename_is_absolute
928{
929 warnings::warnif("deprecated", "util::filename_is_absolute() is deprecated, using FileUtils::isFilenameAbsolute() instead");
930 return &FileUtils::isFilenameAbsolute(@_);
931}
932
933
934## @method make_absolute()
935#
936# Ensure the given file path is absolute in respect to the given base path.
937#
938# @param $base_dir A string denoting the base path the given dir must be
939# absolute to.
940# @param $dir The directory to be made absolute as a string. Note that the
941# dir may already be absolute, in which case it will remain
942# unchanged.
943# @return The now absolute form of the directory as a string.
944#
945# @author John Thompson, DL Consulting Ltd.
946# @copy 2006 DL Consulting Ltd.
947#
948#used in buildcol.pl, doesn't work for all cases --kjdon
949sub make_absolute {
950
951 my ($base_dir, $dir) = @_;
952 ### print STDERR "dir = $dir\n";
953 $dir =~ s/[\\\/]+/\//g;
954 $dir = $base_dir . "/$dir" unless ($dir =~ m|^(\w:)?/|);
955 $dir =~ s|^/tmp_mnt||;
956 1 while($dir =~ s|/[^/]*/\.\./|/|g);
957 $dir =~ s|/[.][.]?/|/|g;
958 $dir =~ tr|/|/|s;
959 ### print STDERR "dir = $dir\n";
960
961 return $dir;
962}
963## make_absolute() ##
964
965sub get_dirsep {
966
967 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
968 return "\\";
969 } else {
970 return "\/";
971 }
972}
973
974sub get_os_dirsep {
975
976 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
977 return "\\\\";
978 } else {
979 return "\\\/";
980 }
981}
982
983sub get_re_dirsep {
984
985 return "\\\\|\\\/";
986}
987
988
989sub get_dirsep_tail {
990 my ($filename) = @_;
991
992 # returns last part of directory or filename
993 # On unix e.g. a/b.d => b.d
994 # a/b/c => c
995
996 my $dirsep = get_re_dirsep();
997 my @dirs = split (/$dirsep/, $filename);
998 my $tail = pop @dirs;
999
1000 # - caused problems under windows
1001 #my ($tail) = ($filename =~ m/^(?:.*?$dirsep)?(.*?)$/);
1002
1003 return $tail;
1004}
1005
1006
1007# if this is running on windows we want binaries to end in
1008# .exe, otherwise they don't have to end in any extension
1009sub get_os_exe {
1010 return ".exe" if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin"));
1011 return "";
1012}
1013
1014
1015# test to see whether this is a big or little endian machine
1016sub is_little_endian
1017{
1018 # To determine the name of the operating system, the variable $^O is a cheap alternative to pulling it out of the Config module;
1019 # If it is a Macintosh machine (i.e. the Darwin operating system), regardless if it's running on the IBM power-pc cpu or the x86 Intel-based chip with a power-pc emulator running on top of it, it's big-endian
1020 # Otherwise, it's little endian
1021
1022 #return 0 if $^O =~ /^darwin$/i;
1023 #return 0 if $ENV{'GSDLOS'} =~ /^darwin$/i;
1024
1025 # Going back to stating exactly whether the machine is little endian
1026 # or big endian, without any special case for Macs. Since for rata it comes
1027 # back with little endian and for shuttle with bigendian.
1028 return (ord(substr(pack("s",1), 0, 1)) == 1);
1029}
1030
1031
1032# will return the collection name if successful, "" otherwise
1033sub use_collection {
1034 my ($collection, $collectdir) = @_;
1035
1036 if (!defined $collectdir || $collectdir eq "") {
1037 $collectdir = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "collect");
1038 }
1039
1040 if (!defined $ENV{'GREENSTONEHOME'}) { # for GS3, would have been defined in use_site_collection, to GSDL3HOME
1041 $ENV{'GREENSTONEHOME'} = $ENV{'GSDLHOME'};
1042 }
1043
1044 # get and check the collection
1045 if (!defined($collection) || $collection eq "") {
1046 if (defined $ENV{'GSDLCOLLECTION'}) {
1047 $collection = $ENV{'GSDLCOLLECTION'};
1048 } else {
1049 print STDOUT "No collection specified\n";
1050 return "";
1051 }
1052 }
1053
1054 if ($collection eq "modelcol") {
1055 print STDOUT "You can't use modelcol.\n";
1056 return "";
1057 }
1058
1059 # make sure the environment variables GSDLCOLLECTION and GSDLCOLLECTDIR
1060 # are defined
1061 $ENV{'GSDLCOLLECTION'} = $collection;
1062 $ENV{'GSDLCOLLECTHOME'} = $collectdir;
1063 $ENV{'GSDLCOLLECTDIR'} = &FileUtils::filenameConcatenate($collectdir, $collection);
1064
1065 # make sure this collection exists
1066 if (!-e $ENV{'GSDLCOLLECTDIR'}) {
1067 print STDOUT "Invalid collection ($collection).\n";
1068 return "";
1069 }
1070
1071 # everything is ready to go
1072 return $collection;
1073}
1074
1075sub get_current_collection_name {
1076 return $ENV{'GSDLCOLLECTION'};
1077}
1078
1079
1080# will return the collection name if successful, "" otherwise.
1081# Like use_collection (above) but for greenstone 3 (taking account of site level)
1082
1083sub use_site_collection {
1084 my ($site, $collection, $collectdir) = @_;
1085
1086 if (!defined $collectdir || $collectdir eq "") {
1087 die "GSDL3HOME not set.\n" unless defined $ENV{'GSDL3HOME'};
1088 $collectdir = &FileUtils::filenameConcatenate($ENV{'GSDL3HOME'}, "sites", $site, "collect");
1089 }
1090
1091 if (defined $ENV{'GSDL3HOME'}) {
1092 $ENV{'GREENSTONEHOME'} = $ENV{'GSDL3HOME'};
1093 $ENV{'SITEHOME'} = &FileUtils::filenameConcatenate($ENV{'GREENSTONEHOME'}, "sites", $site);
1094 } elsif (defined $ENV{'GSDL3SRCHOME'}) {
1095 $ENV{'GREENSTONEHOME'} = &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'}, "web");
1096 $ENV{'SITEHOME'} = &FileUtils::filenameConcatenate($ENV{'GREENSTONEHOME'}, "sites", $site);
1097 } else {
1098 print STDERR "*** util::use_site_collection(). Warning: Neither GSDL3HOME nor GSDL3SRCHOME set.\n";
1099 }
1100
1101 # collectdir explicitly set by this point (using $site variable if required).
1102 # Can call "old" gsdl2 use_collection now.
1103
1104 return use_collection($collection,$collectdir);
1105}
1106
1107
1108
1109sub locate_config_file
1110{
1111 my ($file) = @_;
1112
1113 my $locations = locate_config_files($file);
1114
1115 return shift @$locations; # returns undef if 'locations' is empty
1116}
1117
1118
1119sub locate_config_files
1120{
1121 my ($file) = @_;
1122
1123 my @locations = ();
1124
1125 if (-e $file) {
1126 # Clearly specified (most likely full filename)
1127 # No need to hunt in 'etc' directories, return value unchanged
1128 push(@locations,$file);
1129 }
1130 else {
1131 # Check for collection specific one before looking in global GSDL 'etc'
1132 if (defined $ENV{'GSDLCOLLECTDIR'} && $ENV{'GSDLCOLLECTDIR'} ne "") {
1133 my $test_collect_etc_filename
1134 = &FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'},"etc", $file);
1135
1136 if (-e $test_collect_etc_filename) {
1137 push(@locations,$test_collect_etc_filename);
1138 }
1139 }
1140 my $test_main_etc_filename
1141 = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"etc", $file);
1142 if (-e $test_main_etc_filename) {
1143 push(@locations,$test_main_etc_filename);
1144 }
1145 }
1146
1147 return \@locations;
1148}
1149
1150
1151sub hyperlink_text
1152{
1153 my ($text) = @_;
1154
1155 $text =~ s/(http:\/\/[^\s]+)/<a href=\"$1\">$1<\/a>/mg;
1156 $text =~ s/(^|\s+)(www\.(\w|\.)+)/<a href=\"http:\/\/$2\">$2<\/a>/mg;
1157
1158 return $text;
1159}
1160
1161
1162# A method to check if a directory is empty (note that an empty directory still has non-zero size!!!)
1163# Code is from http://episteme.arstechnica.com/eve/forums/a/tpc/f/6330927813/m/436007700831
1164sub is_dir_empty {
1165 warnings::warnif("deprecated", "util::is_dir_empty() is deprecated, using FileUtils::isDirectoryEmpty() instead");
1166 return &FileUtils::isDirectoryEmpty(@_);
1167}
1168
1169# Returns the given filename converted using either URL encoding or base64
1170# encoding, as specified by $rename_method. If the given filename has no suffix
1171# (if it is just the tailname), then $no_suffix should be some defined value.
1172# rename_method can be url, none, base64
1173sub rename_file {
1174 my ($filename, $rename_method, $no_suffix) = @_;
1175
1176 if(!$filename) { # undefined or empty string
1177 return $filename;
1178 }
1179
1180 if (!$rename_method) {
1181 print STDERR "WARNING: no file renaming method specified. Defaulting to using URL encoding...\n";
1182 # Debugging information
1183 # my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(1);
1184 # print STDERR "Called from method: $cfilename:$cline $cpackage->$csubr\n";
1185 $rename_method = "url";
1186 } elsif($rename_method eq "none") {
1187 return $filename; # would have already been renamed
1188 }
1189
1190 # No longer replace spaces with underscores, since underscores mess with incremental rebuild
1191 ### Replace spaces with underscore. Do this first else it can go wrong below when getting tailname
1192 ###$filename =~ s/ /_/g;
1193
1194 my ($tailname,$dirname,$suffix);
1195 if($no_suffix) { # given a tailname, no suffix
1196 ($tailname,$dirname) = File::Basename::fileparse($filename);
1197 }
1198 else {
1199 ($tailname,$dirname,$suffix) = File::Basename::fileparse($filename, "\\.(?:[^\\.]+?)\$");
1200 }
1201 if (!$suffix) {
1202 $suffix = "";
1203 }
1204 # This breaks GLI matching extracted metadata to files in Enrich panel, as
1205 # original is eg .JPG while gsdlsourcefilename ends up .jpg
1206 # Not sure why it was done in first place...
1207 #else {
1208 #$suffix = lc($suffix);
1209 #}
1210
1211 if ($rename_method eq "url") {
1212 $tailname = &unicode::url_encode($tailname);
1213 }
1214 elsif ($rename_method eq "base64") {
1215 $tailname = &unicode::base64_encode($tailname);
1216 $tailname =~ s/\s*//sg; # for some reason it adds spaces not just at end but also in middle
1217 }
1218
1219 $filename = "$tailname$suffix";
1220 $filename = "$dirname$filename" if ($dirname ne "./" && $dirname ne ".\\");
1221
1222 return $filename;
1223}
1224
1225
1226# BACKWARDS COMPATIBILITY: Just in case there are old .ldb/.bdb files
1227sub rename_ldb_or_bdb_file {
1228 my ($filename_no_ext) = @_;
1229
1230 my $new_filename = "$filename_no_ext.gdb";
1231 return if (-f $new_filename); # if the file has the right extension, don't need to do anything
1232 # try ldb
1233 my $old_filename = "$filename_no_ext.ldb";
1234
1235 if (-f $old_filename) {
1236 print STDERR "Renaming $old_filename to $new_filename\n";
1237 rename ($old_filename, $new_filename)
1238 || print STDERR "Rename failed: $!\n";
1239 return;
1240 }
1241 # try bdb
1242 $old_filename = "$filename_no_ext.bdb";
1243 if (-f $old_filename) {
1244 print STDERR "Renaming $old_filename to $new_filename\n";
1245 rename ($old_filename, $new_filename)
1246 || print STDERR "Rename failed: $!\n";
1247 return;
1248 }
1249}
1250
1251sub os_dir() {
1252
1253 my $gsdlarch = "";
1254 if(defined $ENV{'GSDLARCH'}) {
1255 $gsdlarch = $ENV{'GSDLARCH'};
1256 }
1257 return $ENV{'GSDLOS'}.$gsdlarch;
1258}
1259
1260# returns 1 if this (GS server) is a GS3 installation, returns 0 if it's GS2.
1261sub is_gs3() {
1262 if($ENV{'GSDL3SRCHOME'}) {
1263 return 1;
1264 } else {
1265 return 0;
1266 }
1267}
1268
1269# Returns the greenstone URL prefix extracted from the appropriate GS2/GS3 config file.
1270# By default, /greenstone3 for GS3 or /greenstone for GS2.
1271sub get_greenstone_url_prefix() {
1272 # if already set on a previous occasion, just return that
1273 # (Don't want to keep repeating this: cost of re-opening and scanning files.)
1274 return $ENV{'GREENSTONE_URL_PREFIX'} if($ENV{'GREENSTONE_URL_PREFIX'});
1275
1276 my ($configfile, $urlprefix, $defaultUrlprefix);
1277 my @propertynames = ();
1278
1279 if($ENV{'GSDL3SRCHOME'}) {
1280 $defaultUrlprefix = "/greenstone3";
1281 $configfile = &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'}, "packages", "tomcat", "conf", "Catalina", "localhost", "greenstone3.xml");
1282 push(@propertynames, qw/path\s*\=/);
1283 } else {
1284 $defaultUrlprefix = "/greenstone";
1285 $configfile = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "cgi-bin", &os_dir(), "gsdlsite.cfg");
1286 push(@propertynames, (qw/\nhttpprefix/, qw/\ngwcgi/)); # inspect one property then the other
1287 }
1288
1289 $urlprefix = &extract_propvalue_from_file($configfile, \@propertynames);
1290
1291 if(!$urlprefix) { # no values found for URL prefix, use default values
1292 $urlprefix = $defaultUrlprefix;
1293 } else {
1294 #gwcgi can contain more than the wanted prefix, we split on / to get the first "directory" level
1295 $urlprefix =~ s/^\///; # remove the starting slash
1296 my @dirs = split(/(\\|\/)/, $urlprefix);
1297 $urlprefix = shift(@dirs);
1298
1299 if($urlprefix !~ m/^\//) { # in all cases: ensure the required forward slash is at the front
1300 $urlprefix = "/$urlprefix";
1301 }
1302 }
1303
1304 # set for the future
1305 $ENV{'GREENSTONE_URL_PREFIX'} = $urlprefix;
1306 # print STDERR "*** in get_greenstone_url_prefix(): $urlprefix\n\n";
1307 return $urlprefix;
1308}
1309
1310
1311
1312#
1313# The following comes from activate.pl
1314#
1315# Designed to work with a server included with GS.
1316# - For GS2, we derive the URL from the llssite.cfg file.
1317# - For GS3, we ask ant for the library URL. For GS3, we get the local *http* URL
1318# by default, something like http://127.0.0.1:<httpPort>/greenstone3/library).
1319# Pass in $get_public_url=1 to get something like
1320# <default.protocol>://<tomcat.server>:<default.port>/greenstone/library
1321
1322sub get_full_greenstone_url_prefix
1323{
1324 my ($gs_mode, $lib_name, $get_public_url) = @_;
1325
1326 # if already set on a previous occasion, just return that
1327 # (Don't want to keep repeating this: cost of re-opening and scanning files.)
1328 return $ENV{'FULL_GREENSTONE_URL_PREFIX'} if($ENV{'FULL_GREENSTONE_URL_PREFIX'});
1329
1330 # set gs_mode if it was not passed in (servercontrol.pm would pass it in, any other callers won't)
1331 $gs_mode = ($ENV{'GSDL3SRCHOME'}) ? "gs3" : "gs2" unless defined $gs_mode;
1332
1333 my $url = undef;
1334
1335 if($gs_mode eq "gs2") {
1336 my $llssite_cfg = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "llssite.cfg");
1337
1338 if(-f $llssite_cfg) {
1339 # check llssite.cfg for line with url property
1340 # for server.exe also need to use portnumber and enterlib properties
1341 # The following file reading section is a candidate to use FileUtils::readUTF8File()
1342 # in place of calling sysread() directly. But only if we can reason we'd be working with UTF8
1343 # Read in the entire contents of the file in one hit
1344 if (!open (FIN, $llssite_cfg)) {
1345 print STDERR "util::get_full_greenstone_url_prefix() failed to open $llssite_cfg ($!)\n";
1346 return undef;
1347 }
1348
1349 my $contents;
1350 sysread(FIN, $contents, -s FIN);
1351 close(FIN);
1352
1353 my @lines = split(/[\n\r]+/, $contents); # split on carriage-returns and/or linefeeds
1354 my $enterlib = "";
1355 my $portnumber = "8282"; # will remain empty (implicit port 80) unless it's specifically been assigned
1356
1357 foreach my $line (@lines) {
1358 if($line =~ m/^url=(.*)$/) {
1359 $url = $1;
1360 } elsif($line =~ m/^enterlib=(.*)$/) {
1361 $enterlib = $1;
1362 } elsif($line =~ m/^portnumber=(.*)$/) {
1363 $portnumber = $1;
1364 }
1365 }
1366
1367 if(!$url) {
1368 return undef;
1369 }
1370 elsif($url eq "URL_pending") { # library is not running
1371 # do not process url=URL_pending in the file, since for server.exe
1372 # this just means the Enter Library button hasn't been pressed yet
1373 $url = undef;
1374 }
1375 else {
1376 # In the case of server.exe, need to do extra work to get the proper URL
1377 # But first, need to know whether we're indeed dealing with server.exe:
1378
1379 # compare the URL's domain to the full URL
1380 # E.g. for http://localhost:8383/greenstone3/cgi-bin, the domain is localhost:8383
1381 my $uri = URI->new( $url );
1382 my $host = $uri->host;
1383 #print STDERR "@@@@@ host: $host\n";
1384 if($url =~ m/https?:\/\/$host(\/)?$/) {
1385 #if($url !~ m/https?:\/\/$host:$portnumber(\/)?/ || $url =~ m/https?:\/\/$host(\/)?$/) {
1386 # (if the URL does not contain the portnumber, OR if the port is implicitly 80 and)
1387 # If the domain with http:// prefix is completely the same as the URL, assume server.exe
1388 # then the actual URL is the result of suffixing the port and enterlib properties in llssite.cfg
1389 $url = $url.":".$portnumber.$enterlib;
1390 } # else, apache web server
1391
1392 }
1393 }
1394 } elsif($gs_mode eq "gs3") {
1395 # Either check build.properties for tomcat.server, tomcat.port and app.name (and default servlet name).
1396 # app.name is stored in app.path by build.xml. Need to move app.name in build.properties from build.xml
1397
1398 # Or, run the new target get-local-http-servlet-url / get-default-servlet-url
1399 # the output can look like:
1400 #
1401 # Buildfile: build.xml
1402 # [echo] os.name: Windows Vista
1403 #
1404 # get-default-servlet-url:
1405 # [echo] http://localhost:8383/greenstone3/library
1406 # BUILD SUCCESSFUL
1407 # Total time: 0 seconds
1408
1409 #my $output = qx/ant get-default-servlet-url/; # backtick operator, to get STDOUT (else 2>&1)
1410 # - see http://stackoverflow.com/questions/799968/whats-the-difference-between-perls-backticks-system-and-exec
1411
1412 # The get-local-http-servlet-url (or get-default-servlet-url) ant target can be run from anywhere by specifying the
1413 # location of GS3's ant build.xml buildfile. Activate.pl can be run from anywhere for GS3
1414 # GSDL3SRCHOME will be set for GS3 by gs3-setup.sh, a step that would have been necessary
1415 # to run the activate.pl script in the first place
1416
1417 # The default is to get-local-http-servlet-url (of the form http://127.0.0.1:<httpPort>/greentone3/library)
1418 my $full_build_xml = &FileUtils::javaFilenameConcatenate($ENV{'GSDL3SRCHOME'},"build.xml");
1419
1420 my $perl_command = $get_public_url ? "get-default-servlet-url" : "get-local-http-servlet-url";
1421 $perl_command = "ant -buildfile \"$full_build_xml\" $perl_command";
1422
1423 if (open(PIN, "$perl_command |")) {
1424 while (defined (my $perl_output_line = <PIN>)) {
1425
1426 if($perl_output_line =~ m@(https?):\/\/(\S*)@) { # grab all the non-whitespace chars
1427 $url="$1://".$2; # preserve the http protocol #$url="http://".$1;
1428 }
1429 }
1430 close(PIN);
1431
1432 # url can be undef if tomcat.port could not be determined due to
1433 # user having wrong or conflicting server related vals in build.props
1434 if (defined $url && defined $lib_name && $lib_name ne "") {
1435 # replace the servlet_name portion of the url found, with the given library_name
1436 $url =~ s@/[^/]*$@/$lib_name@;
1437 }
1438 } else {
1439 print STDERR "util::get_full_greenstone_url_prefix() failed to run $perl_command to work out library URL for $gs_mode\n";
1440 }
1441 }
1442
1443 # either the url is still undef or it is now set
1444 #print STDERR "\n@@@@@ final URL:|$url|\n" if $url;
1445 #print STDERR "\n@@@@@ URL still undef\n" if !$url;
1446
1447 $ENV{'FULL_GREENSTONE_URL_PREFIX'} = $url;
1448
1449 return $url;
1450}
1451
1452
1453# Given a config file (xml or java properties file) and a list/array of regular expressions
1454# that represent property names to match on, this function will return the value for the 1st
1455# matching property name. If the return value is undefined, no matching property was found.
1456sub extract_propvalue_from_file() {
1457 my ($configfile, $propertynames) = @_;
1458
1459 my $value;
1460 unless(open(FIN, "<$configfile")) {
1461 print STDERR "extract_propvalue_from_file(): Unable to open $configfile. $!\n";
1462 return $value; # not initialised
1463 }
1464
1465 # Read the entire file at once, as one single line, then close it
1466 my $filecontents;
1467 {
1468 local $/ = undef;
1469 $filecontents = <FIN>;
1470 }
1471 close(FIN);
1472
1473 foreach my $regex (@$propertynames) {
1474 ($value) = $filecontents=~ m/$regex\s*(\S*)/s; # read value of the property given by regex up to the 1st space
1475 if($value) {
1476 $value =~ s/^\"//; # remove any startquotes
1477 $value =~ s/\".*$//; # remove the 1st endquotes (if any) followed by any xml
1478 last; # found value for a matching property, break from loop
1479 }
1480 }
1481
1482 return $value;
1483}
1484
1485# Subroutine that sources setup.bash, given GSDLHOME and GSDLOS and
1486# given that perllib is in @INC in order to invoke this subroutine.
1487# Call as follows -- after setting up INC to include perllib and
1488# after setting up GSDLHOME and GSDLOS:
1489#
1490# require util;
1491# &util::setup_greenstone_env($ENV{'GSDLHOME'}, $ENV{'GSDLOS'});
1492#
1493sub setup_greenstone_env() {
1494 my ($GSDLHOME, $GSDLOS) = @_;
1495
1496 #my %env_map = ();
1497 # Get the localised ENV settings of running a localised source setup.bash
1498 # and put it into the ENV here. Need to clear GSDLHOME before running setup
1499 #my $perl_command = "(cd $GSDLHOME; export GSDLHOME=; . ./setup.bash > /dev/null; env)";
1500 my $perl_command = "(cd $GSDLHOME; /bin/bash -c \"export GSDLHOME=; source setup.bash > /dev/null; env\")";
1501 if (($GSDLOS =~ m/windows/i) && ($^O ne "cygwin")) {
1502 #$perl_command = "cmd /C \"cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set\"";
1503 $perl_command = "(cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set)";
1504 }
1505 if (!open(PIN, "$perl_command |")) {
1506 print STDERR ("Unable to execute command: $perl_command. $!\n");
1507 }
1508
1509 my $lastkey;
1510 while (defined (my $perl_output_line = <PIN>)) {
1511 my($key,$value) = ($perl_output_line =~ m/^([^=]*)[=](.*)$/);
1512 if(defined $key) {
1513 #$env_map{$key}=$value;
1514 $ENV{$key}=$value;
1515 $lastkey = $key;
1516 } elsif($lastkey && $perl_output_line !~ m/^\s*$/) {
1517 # there was no equals sign in $perl_output_line, so this
1518 # $perl_output_line may be a spillover from the previous
1519 $ENV{$lastkey} = $ENV{$lastkey}."\n".$perl_output_line;
1520 }
1521 }
1522 close (PIN);
1523
1524 # If any keys in $ENV don't occur in Greenstone's localised env
1525 # (stored in $env_map), delete those entries from $ENV
1526 #foreach $key (keys %ENV) {
1527 # if(!defined $env_map{$key}) {
1528 # print STDOUT "**** DELETING ENV KEY: $key\tVALUE: $ENV{$key}\n";
1529 # delete $ENV{$key}; # del $ENV(key, value) pair
1530 # }
1531 #}
1532 #undef %env_map;
1533}
1534
1535sub get_perl_exec() {
1536 my $perl_exec = $^X; # may return just "perl"
1537
1538 if($ENV{'PERLPATH'}) {
1539 # OR: # $perl_exec = &FileUtils::filenameConcatenate($ENV{'PERLPATH'},"perl");
1540 if (($ENV{'GSDLOS'} =~ m/windows/) && ($^O ne "cygwin")) {
1541 $perl_exec = "$ENV{'PERLPATH'}\\Perl.exe";
1542 } else {
1543 $perl_exec = "$ENV{'PERLPATH'}/perl";
1544 }
1545 } else { # no PERLPATH, use Config{perlpath} else $^X: special variables
1546 # containing the full path to the current perl executable we're using
1547 $perl_exec = $Config{perlpath}; # configured path for perl
1548 if (!-e $perl_exec) { # may not point to location on this machine
1549 $perl_exec = $^X; # may return just "perl"
1550 if($perl_exec =~ m/^perl/i) { # warn if just perl or Perl.exe
1551 print STDERR "**** WARNING: Perl exec found contains no path: $perl_exec";
1552 }
1553 }
1554 }
1555
1556 return $perl_exec;
1557}
1558
1559# returns the path to the java command in the JRE included with GS (if any),
1560# quoted to safeguard any spaces in this path, otherwise a simple java
1561# command is returned which assumes and will try for a system java.
1562sub get_java_command {
1563 my $java = "java";
1564 if(defined $ENV{'GSDLHOME'}) { # should be, as this script would be launched from the cmd line
1565 # after running setup.bat or from GLI which also runs setup.bat
1566 my $java_bin = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"packages","jre","bin");
1567 if(-d $java_bin) {
1568 $java = &FileUtils::filenameConcatenate($java_bin,"java");
1569 $java = "\"".$java."\""; # quoted to preserve spaces in path
1570 }
1571 }
1572 return $java;
1573}
1574
1575
1576# Given the qualified collection name (colgroup/collection),
1577# returns the collection and colgroup parts
1578sub get_collection_parts {
1579 # http://perldoc.perl.org/File/Basename.html
1580 # my($filename, $directories, $suffix) = fileparse($path);
1581 # "$directories contains everything up to and including the last directory separator in the $path
1582 # including the volume (if applicable). The remainder of the $path is the $filename."
1583 #my ($collection, $colgroup) = &File::Basename::fileparse($qualified_collection);
1584
1585 my $qualified_collection = shift(@_);
1586
1587 # Since activate.pl can be launched from the command-line, including by a user,
1588 # best not to assume colgroup uses URL-style slashes as would be the case with GLI
1589 # Also allow for the accidental inclusion of multiple slashes
1590 my ($colgroup, $collection) = split(/[\/\\]+/, $qualified_collection); #split('/', $qualified_collection);
1591
1592 if(!defined $collection) {
1593 $collection = $colgroup;
1594 $colgroup = "";
1595 }
1596 return ($collection, $colgroup);
1597}
1598
1599# work out the "collectdir/collection" location
1600sub resolve_collection_dir {
1601 my ($collect_dir, $qualified_collection, $site) = @_; #, $gs_mode
1602
1603 if (defined $ENV{'GSDLCOLLECTDIR'}) { # a predefined collection dir exists
1604 return $ENV{'GSDLCOLLECTDIR'};
1605 }
1606
1607 my ($colgroup, $collection) = &util::get_collection_parts($qualified_collection);
1608
1609 if (!defined $collect_dir || !$collect_dir) { # if undefined or empty string
1610 $collect_dir = &util::get_working_collect_dir($site);
1611 }
1612
1613 return &FileUtils::filenameConcatenate($collect_dir,$colgroup,$collection);
1614}
1615
1616# work out the full path to "collect" of this greenstone 2/3 installation
1617sub get_working_collect_dir {
1618 my ($site) = @_;
1619
1620 if (defined $ENV{'GSDLCOLLECTHOME'}) { # a predefined collect dir exists
1621 return $ENV{'GSDLCOLLECTHOME'};
1622 }
1623
1624 if (defined $site && $site) { # site non-empty, so get default collect dir for GS3
1625
1626 if (defined $ENV{'GSDL3HOME'}) {
1627 return &FileUtils::filenameConcatenate($ENV{'GSDL3HOME'},"sites",$site,"collect"); # web folder
1628 }
1629 elsif (defined $ENV{'GSDL3SRCHOME'}) {
1630 return &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'},"web","sites",$site,"collect");
1631 }
1632 }
1633
1634 elsif (defined $ENV{'SITEHOME'}) {
1635 return &FileUtils::filenameConcatenate($ENV{'SITEHOME'},"collect");
1636 }
1637
1638 else { # get default collect dir for GS2
1639 return &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"collect");
1640 }
1641}
1642
1643sub is_abs_path_any_os {
1644 my ($path) = @_;
1645
1646 # We can have filenames in our DBs that were produced on other OS, so this method exists
1647 # to help identify absolute paths in such cases.
1648
1649 return 1 if($path =~ m@^/@); # full paths begin with forward slash on linux/mac
1650 return 1 if($path =~ m@^([a-zA-Z]\:|\\)@); # full paths begin with drive letter colon for Win or \ for volume, http://stackoverflow.com/questions/13011013/get-only-volume-name-from-filepath
1651
1652 return 0;
1653}
1654
1655
1656# This subroutine is for improving portability of Greenstone collections from one OS to another,
1657# to be used to convert absolute paths going into db files into paths with placeholders instead.
1658# This sub works with util::get_common_gs_paths and takes a path to a greenstone file and, if it's
1659# an absolute path, then it will replace the longest matching greenstone-path prefix of the given
1660# path with a placeholder to match.
1661# The Greenstone-path prefixes that can be matched are the following common Greenstone paths:
1662# the path to the current (specific) collection, the path to the general GS collect directory,
1663# the path to the site directory if GS3, else the path to the GSDLHOME/GSDL3HOME folder.
1664# The longest matching prefix will be replaced with the equivalent placeholder:
1665# @THISCOLLECTPATH@, else @COLLECTHOME@, else @SITEHOME@, else @GSDLHOME@.
1666sub abspath_to_placeholders {
1667 my $path = shift(@_); # path to convert from absolute to one with placeholders
1668 my $opt_long_or_short_winfilenames = shift(@_) || "short"; # whether we want to force use of long file names even on windows, default uses short
1669
1670 return $path unless is_abs_path_any_os($path); # path is relative
1671
1672 if ($opt_long_or_short_winfilenames eq "long") {
1673 $path = &util::upgrade_if_dos_filename($path); # will only do something on windows
1674 }
1675
1676 # now we know we're dealing with absolute paths and have to replace gs prefixes with placeholders
1677 my @gs_paths = ($ENV{'GSDLCOLLECTDIR'}, $ENV{'GSDLCOLLECTHOME'}, $ENV{'SITEHOME'}, $ENV{'GREENSTONEHOME'}); # list in this order: from longest to shortest path
1678
1679 my %placeholder_map = ($ENV{'GREENSTONEHOME'} => '@GSDLHOME@', # can't use double-quotes around at-sign, else perl tries to evaluate it as referring to an array
1680 $ENV{'GSDLCOLLECTHOME'} => '@COLLECTHOME@',
1681 $ENV{'GSDLCOLLECTDIR'} => '@THISCOLLECTPATH@'
1682 );
1683 $placeholder_map{$ENV{'SITEHOME'}} = '@SITEHOME@' if defined $ENV{'SITEHOME'};
1684
1685 $path = &util::_abspath_to_placeholders($path, \@gs_paths, \%placeholder_map);
1686
1687 if ($ENV{'GSDLOS'} =~ /^windows$/i && $opt_long_or_short_winfilenames eq "short") {
1688 # for windows need to look for matches on short file names too
1689 # matched paths are again to be replaced with the usual placeholders
1690
1691 my $gsdlcollectdir = &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTDIR'});
1692 my $gsdlcollecthome = &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTHOME'});
1693 my $sitehome = (defined $ENV{'SITEHOME'}) ? &util::downgrade_if_dos_filename($ENV{'SITEHOME'}) : undef;
1694 my $greenstonehome = &util::downgrade_if_dos_filename($ENV{'GREENSTONEHOME'});
1695
1696 @gs_paths = ($gsdlcollectdir, $gsdlcollecthome, $sitehome, $greenstonehome); # order matters
1697
1698 %placeholder_map = ($greenstonehome => '@GSDLHOME@', # can't use double-quotes around at-sign, else perl tries to evaluate it as referring to an array
1699 $gsdlcollecthome => '@COLLECTHOME@',
1700 $gsdlcollectdir => '@THISCOLLECTPATH@'
1701 );
1702 $placeholder_map{$sitehome} = '@SITEHOME@' if defined $sitehome;
1703
1704 $path = &util::_abspath_to_placeholders($path, \@gs_paths, \%placeholder_map);
1705 }
1706
1707 return $path;
1708}
1709
1710sub _abspath_to_placeholders {
1711 my ($path, $gs_paths_ref, $placeholder_map_ref) = @_;
1712
1713 # The sequence of elements in @gs_paths matters
1714 # Need to loop starting from the *longest* matching path (the path to the specific collection)
1715 # to the shortest matching path (the path to gsdlhome/gsdl3home folder):
1716
1717 foreach my $gs_path (@$gs_paths_ref) {
1718 next if(!defined $gs_path); # site undefined for GS2
1719
1720 my $re_path = &util::filename_to_regex($gs_path); # escape for regex
1721
1722 if($path =~ m/^$re_path/i) { # case sensitive or not for OS?
1723
1724 my $placeholder = $placeholder_map_ref->{$gs_path}; # get the placeholder to replace the matched path with
1725
1726 $path =~ s/^$re_path/$placeholder/; #case sensitive or not?
1727 #$path =~ s/^[\\\/]//; # remove gs_path's trailing separator left behind at the start of the path
1728 # lowercase file extension, This is needed when shortfilenames are used, as case affects alphetical ordering, which affects diffcol
1729 $path =~ s/\.([A-Z]+)$/".".lc($1)/e;
1730 last; # done
1731 }
1732 }
1733
1734 return $path;
1735}
1736
1737# Function that does the reverse of the util::abspath_to_placeholders subroutine
1738# Once again, call this with the values returned from util::get_common_gs_paths
1739sub placeholders_to_abspath {
1740 my $path = shift(@_); # path that can contain placeholders to convert to resolved absolute path
1741 my $opt_long_or_short_winfilenames = shift(@_) || "short"; # whether we want to force use of long file names even on windows, default uses short
1742
1743 return $path if($path !~ m/@/); # path contains no placeholders
1744
1745 # replace placeholders with gs prefixes
1746 my @placeholders = ('@THISCOLLECTPATH@', '@COLLECTHOME@', '@SITEHOME@', '@GSDLHOME@'); # order of paths not crucial in this case,
1747 # but listed here from longest to shortest once placeholders are have been resolved
1748
1749 # can't use double-quotes around at-sign, else perl tries to evaluate it as referring to an array
1750 my %placeholder_to_gspath_map;
1751 if ($ENV{'GSDLOS'} =~ /^windows$/i && $opt_long_or_short_winfilenames eq "short") {
1752 # always replace placeholders with short file names of the absolute paths on windows?
1753 %placeholder_to_gspath_map = ('@GSDLHOME@' => &util::downgrade_if_dos_filename($ENV{'GREENSTONEHOME'}),
1754 '@COLLECTHOME@' => &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTHOME'}),
1755 '@THISCOLLECTPATH@' => &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTDIR'})
1756 );
1757 $placeholder_to_gspath_map{'@SITEHOME@'} = &util::downgrade_if_dos_filename($ENV{'SITEHOME'}) if defined $ENV{'SITEHOME'};
1758 } else {
1759 %placeholder_to_gspath_map = ('@GSDLHOME@' => $ENV{'GREENSTONEHOME'},
1760 '@SITEHOME@' => $ENV{'SITEHOME'}, # can be undef
1761 '@COLLECTHOME@' => $ENV{'GSDLCOLLECTHOME'},
1762 '@THISCOLLECTPATH@' => $ENV{'GSDLCOLLECTDIR'}
1763 ); # $placeholder_to_gspath_map{'@SITEHOME@'} = $ENV{'SITEHOME'} if defined $ENV{'SITEHOME'};
1764 }
1765
1766 foreach my $placeholder (@placeholders) {
1767 my $gs_path = $placeholder_to_gspath_map{$placeholder};
1768
1769 next if(!defined $gs_path); # sitehome for GS2 is undefined
1770
1771 if($path =~ m/^$placeholder/) {
1772 $path =~ s/^$placeholder/$gs_path/;
1773 last; # done
1774 }
1775 }
1776
1777 return $path;
1778}
1779
1780# Used by pdfpstoimg.pl and PDFBoxConverter to create a .item file from
1781# a directory containing sequentially numbered images (and optional matching sequentially numbered .txt files).
1782sub create_itemfile
1783{
1784 my ($output_dir, $convert_basename, $convert_to) = @_;
1785 my $page_num = "";
1786
1787 opendir(DIR, $output_dir) || die "can't opendir $output_dir: $!";
1788 my @dir_files = grep {-f "$output_dir/$_"} readdir(DIR);
1789 closedir DIR;
1790
1791 # Sort files in the directory by page_num
1792 sub page_number {
1793 my ($dir) = @_;
1794 my ($pagenum) =($dir =~ m/^.*?[-\.]?(\d+)(\.(jpg|gif|png|txt))?$/i);
1795 # my ($pagenum) =($dir =~ m/(\d+)(\.(jpg|gif|png))?$/i); # this works but is not as safe/strict about input filepatterns as the above
1796
1797 $pagenum = 1 unless defined $pagenum;
1798 return $pagenum;
1799 }
1800
1801 # sort the files in the directory in the order of page_num rather than lexically.
1802 @dir_files = sort { page_number($a) <=> page_number($b) } @dir_files;
1803
1804 # work out if the numbering of the now sorted image files starts at 0 or not
1805 # by checking the number of the first _image_ file (skipping item files)
1806 my $starts_at_0 = 0;
1807 my $firstfile = ($dir_files[0] !~ /\.item$/i) ? $dir_files[0] : $dir_files[1];
1808 if(page_number($firstfile) == 0) { # 00 will evaluate to 0 too in this condition
1809 $starts_at_0 = 1;
1810 }
1811
1812 my $item_file = &FileUtils::filenameConcatenate($output_dir, $convert_basename.".item");
1813 my $item_fh;
1814 &FileUtils::openFileHandle($item_file, 'w', \$item_fh);
1815 print $item_fh "<PagedDocument>\n";
1816
1817 # In the past, sub create_itemfile() never output txtfile names into the item file (they were left as empty strings),
1818 # only image file names. Now that PDFBox is being customised for GS with the new GS_PDFToImagesAndText.java class to
1819 # create images of each PDF page and extract text for that page if extractable, we can have matching txt files for
1820 # each img file. So now we can output txt file names if we're working with txt files.
1821 # We just test if a text file exists in the same dir that matches the name of the first image file
1822 # if a matching txt file does not exist, don't output txtfile names into the item file
1823
1824 my ($tailname, $dirname, $suffix) = &File::Basename::fileparse($firstfile, "\\.[^\\.]+\$"); # relative filenames so no dirname
1825 my $txtfilename = &FileUtils::filenameConcatenate($output_dir, $tailname . ".txt");
1826 my $hasTxtFile = &FileUtils::fileExists($txtfilename);
1827
1828 # Write out the elements of the item file.
1829 # We could be dealing with 3 types of conversion output formats: txt only (paged_text),
1830 # images only (pagedimg_) and images AND text (pagedimgtxt_).
1831 foreach my $file (@dir_files) {
1832 if ($file !~ /\.item/i) {
1833 $page_num = page_number($file);
1834 $page_num++ if $starts_at_0; # image numbers start at 0, so add 1
1835
1836 if ($convert_to eq "txt") { # output format is paged_text, which has no images
1837 if ($file =~ m/\.txt/i) { # check only txt files (should be all there is, besides the skipped .item file)
1838 print $item_fh " <Page pagenum=\"$page_num\" imgfile=\"\" txtfile=\"$page_num.txt\"/>\n";
1839 } # else, some non-txt file ext, skip
1840 }
1841 else { # either pagedimg or pagedimgtxt output mode
1842 if($file !~ /\.txt/i) { # check only img files, skip any matching txt files
1843 if($hasTxtFile) { # if every image has a matching txt file, output txtfile too
1844 print $item_fh " <Page pagenum=\"$page_num\" imgfile=\"$file\" txtfile=\"$page_num.txt\"/>\n";
1845 } else { # when its pagedimg only, txtfile is empty
1846 print $item_fh " <Page pagenum=\"$page_num\" imgfile=\"$file\" txtfile=\"\"/>\n";
1847 }
1848 }
1849 }
1850 }
1851 }
1852
1853
1854 print $item_fh "</PagedDocument>\n";
1855 &FileUtils::closeFileHandle($item_file, \$item_fh);
1856 return $item_file;
1857}
1858
1859# Sets the gnomelib_env. Based on the logic in wvware.pl which can perhaps be replaced with a call to this function in future
1860sub set_gnomelib_env
1861{
1862 ## SET THE ENVIRONMENT AS DONE IN SETUP.BASH/BAT OF GNOME-LIB
1863 # Though this is only needed for darwin Lion at this point (and android, though that is untested)
1864
1865 my $libext = "so";
1866 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
1867 return;
1868 } elsif ($ENV{'GSDLOS'} =~ m/^darwin$/i) {
1869 $libext = "dylib";
1870 }
1871
1872 if (!defined $ENV{'GEXTGNOME'}) {
1873 ##print STDERR "@@@ Setting GEXTGNOME env\n";
1874
1875 my $gnome_dir = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"ext","gnome-lib-minimal");
1876
1877 if(! -d $gnome_dir) {
1878 $gnome_dir = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"ext","gnome-lib");
1879
1880 if(! -d $gnome_dir) {
1881 $gnome_dir = "";
1882 }
1883 }
1884
1885 # now set other the related env vars,
1886 # IF we've found the gnome-lib dir installed in the ext folder
1887
1888 if ($gnome_dir ne "" && -f &FileUtils::filenameConcatenate($gnome_dir, $ENV{'GSDLOS'}, "lib", "libiconv.$libext")) {
1889 $ENV{'GEXTGNOME'} = $gnome_dir;
1890 $ENV{'GEXTGNOME_INSTALLED'}=&FileUtils::filenameConcatenate($ENV{'GEXTGNOME'}, $ENV{'GSDLOS'});
1891
1892 my $gnomelib_bin = &FileUtils::filenameConcatenate($ENV{'GEXTGNOME_INSTALLED'}, "bin");
1893 if(-d $gnomelib_bin) { # no bin subfolder in GS binary's cutdown gnome-lib-minimal folder
1894 &util::envvar_prepend("PATH", $gnomelib_bin);
1895 }
1896
1897 # util's prepend will create LD/DYLD_LIB_PATH if it doesn't exist yet
1898 my $gextlib = &FileUtils::filenameConcatenate($ENV{'GEXTGNOME_INSTALLED'}, "lib");
1899
1900 if($ENV{'GSDLOS'} eq "linux") {
1901 &util::envvar_prepend("LD_LIBRARY_PATH", $gextlib);
1902 }
1903 elsif ($ENV{'GSDLOS'} eq "darwin") {
1904 #&util::envvar_prepend("DYLD_LIBRARY_PATH", $gextlib);
1905 &util::envvar_prepend("DYLD_FALLBACK_LIBRARY_PATH", $gextlib);
1906 }
1907 }
1908
1909 # Above largely mimics the setup.bash of the gnome-lib-minimal.
1910 # Not doing the devel-srcpack that gnome-lib-minimal's setup.bash used to set
1911 # Not exporting GSDLEXTS variable either
1912 }
1913
1914 # print STDERR "@@@@@ GEXTGNOME: ".$ENV{'GEXTGNOME'}."\n\tINSTALL".$ENV{'GEXTGNOME_INSTALLED'}."\n";
1915 # print STDERR "\tPATH".$ENV{'PATH'}."\n";
1916 # print STDERR "\tLD_LIB_PATH".$ENV{'LD_LIBRARY_PATH'}."\n" if $ENV{'LD_LIBRARY_PATH};
1917 # print STDERR "\tDYLD_FALLBACK_LIB_PATH".$ENV{'DYLD_FALLBACK_LIBRARY_PATH'}."\n" if $ENV{'DYLD_FALLBACK_LIBRARY_PATH};
1918
1919 # if no GEXTGNOME, maybe users didn't need gnome-lib to run gnomelib/libiconv dependent binaries like hashfile, suffix, wget
1920 # (wvware is launched in a gnomelib env from its own script, but could possibly go through this script in future)
1921}
1922
1923
1924
1925## @function augmentINC()
1926#
1927# Prepend a path (if it exists) onto INC but only if it isn't already in INC
1928# @param $new_path The path to add
1929# @author jmt12
1930#
1931sub augmentINC
1932{
1933 my ($new_path) = @_;
1934 my $did_add_path = 0;
1935 # might need to be replaced with FileUtils::directoryExists() call eventually
1936 if (-d $new_path)
1937 {
1938 my $did_find_path = 0;
1939 foreach my $existing_path (@INC)
1940 {
1941 if ($existing_path eq $new_path)
1942 {
1943 $did_find_path = 1;
1944 last;
1945 }
1946 }
1947 if (!$did_find_path)
1948 {
1949 unshift(@INC, $new_path);
1950 $did_add_path = 1;
1951 }
1952 }
1953 return $did_add_path;
1954}
1955## augmentINC()
1956
1957
19581;
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