source: main/trunk/greenstone2/perllib/util.pm@ 23414

Last change on this file since 23414 was 23414, checked in by davidb, 13 years ago

Need to be more careful when downgrading a filename to ensure we still return a string that is at least still defined
  • Property svn:keywords set to Author Date Id Revision
File size: 42.2 KB
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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;
29
30use Encode;
31use File::Copy;
32use File::Basename;
33
34# removes files (but not directories)
35sub rm {
36 my (@files) = @_;
37
38 my @filefiles = ();
39
40 # make sure the files we want to delete exist
41 # and are regular files
42 foreach my $file (@files) {
43 if (!-e $file) {
44 print STDERR "util::rm $file does not exist\n";
45 } elsif ((!-f $file) && (!-l $file)) {
46 print STDERR "util::rm $file is not a regular (or symbolic) file\n";
47 } else {
48 push (@filefiles, $file);
49 }
50 }
51
52 # remove the files
53 my $numremoved = unlink @filefiles;
54
55 # check to make sure all of them were removed
56 if ($numremoved != scalar(@filefiles)) {
57 print STDERR "util::rm Not all files were removed\n";
58 }
59}
60
61# removes files (but not directories) - can rename this to the default
62# "rm" subroutine when debugging the deletion of individual files.
63sub rm_debug {
64 my (@files) = @_;
65 my @filefiles = ();
66
67 # make sure the files we want to delete exist
68 # and are regular files
69 foreach my $file (@files) {
70 if (!-e $file) {
71 print STDERR "util::rm $file does not exist\n";
72 } elsif ((!-f $file) && (!-l $file)) {
73 print STDERR "util::rm $file is not a regular (or symbolic) file\n";
74 } else { # debug message
75 unlink($file) or warn "Could not delete file $file: $!\n";
76 }
77 }
78}
79
80
81# recursive removal
82sub filtered_rm_r {
83 my ($files,$file_accept_re,$file_reject_re) = @_;
84
85 my @files_array = (ref $files eq "ARRAY") ? @$files : ($files);
86
87 # recursively remove the files
88 foreach my $file (@files_array) {
89 $file =~ s/[\/\\]+$//; # remove trailing slashes
90
91 if (!-e $file) {
92 print STDERR "util::filtered_rm_r $file does not exist\n";
93
94 } elsif ((-d $file) && (!-l $file)) { # don't recurse down symbolic link
95 # get the contents of this directory
96 if (!opendir (INDIR, $file)) {
97 print STDERR "util::filtered_rm_r could not open directory $file\n";
98 } else {
99 my @filedir = grep (!/^\.\.?$/, readdir (INDIR));
100 closedir (INDIR);
101
102 # remove all the files in this directory
103 map {$_="$file/$_";} @filedir;
104 &filtered_rm_r (\@filedir,$file_accept_re,$file_reject_re);
105
106 if (!defined $file_accept_re && !defined $file_reject_re) {
107 # remove this directory
108 if (!rmdir $file) {
109 print STDERR "util::filtered_rm_r couldn't remove directory $file\n";
110 }
111 }
112 }
113 } else {
114 next if (defined $file_reject_re && ($file =~ m/$file_reject_re/));
115
116 if ((!defined $file_accept_re) || ($file =~ m/$file_accept_re/)) {
117 # remove this file
118 &rm ($file);
119 }
120 }
121 }
122}
123
124
125# recursive removal
126sub rm_r {
127 my (@files) = @_;
128
129 # use the more general (but reterospectively written function
130 # filtered_rm_r function()
131
132 filtered_rm_r(\@files,undef,undef); # no accept or reject expressions
133}
134
135
136
137
138# moves a file or a group of files
139sub mv {
140 my $dest = pop (@_);
141 my (@srcfiles) = @_;
142
143 # remove trailing slashes from source and destination files
144 $dest =~ s/[\\\/]+$//;
145 map {$_ =~ s/[\\\/]+$//;} @srcfiles;
146
147 # a few sanity checks
148 if (scalar (@srcfiles) == 0) {
149 print STDERR "util::mv no destination directory given\n";
150 return;
151 } elsif ((scalar (@srcfiles) > 1) && (!-d $dest)) {
152 print STDERR "util::mv if multiple source files are given the ".
153 "destination must be a directory\n";
154 return;
155 }
156
157 # move the files
158 foreach my $file (@srcfiles) {
159 my $tempdest = $dest;
160 if (-d $tempdest) {
161 my ($filename) = $file =~ /([^\\\/]+)$/;
162 $tempdest .= "/$filename";
163 }
164 if (!-e $file) {
165 print STDERR "util::mv $file does not exist\n";
166 } else {
167 rename ($file, $tempdest);
168 }
169 }
170}
171
172
173# copies a file or a group of files
174sub cp {
175 my $dest = pop (@_);
176 my (@srcfiles) = @_;
177
178 # remove trailing slashes from source and destination files
179 $dest =~ s/[\\\/]+$//;
180 map {$_ =~ s/[\\\/]+$//;} @srcfiles;
181
182 # a few sanity checks
183 if (scalar (@srcfiles) == 0) {
184 print STDERR "util::cp no destination directory given\n";
185 return;
186 } elsif ((scalar (@srcfiles) > 1) && (!-d $dest)) {
187 print STDERR "util::cp if multiple source files are given the ".
188 "destination must be a directory\n";
189 return;
190 }
191
192 # copy the files
193 foreach my $file (@srcfiles) {
194 my $tempdest = $dest;
195 if (-d $tempdest) {
196 my ($filename) = $file =~ /([^\\\/]+)$/;
197 $tempdest .= "/$filename";
198 }
199 if (!-e $file) {
200 print STDERR "util::cp $file does not exist\n";
201 } elsif (!-f $file) {
202 print STDERR "util::cp $file is not a plain file\n";
203 } else {
204 &File::Copy::copy ($file, $tempdest);
205 }
206 }
207}
208
209
210
211# recursively copies a file or group of files
212# syntax: cp_r (sourcefiles, destination directory)
213# destination must be a directory - to copy one file to
214# another use cp instead
215sub cp_r {
216 my $dest = pop (@_);
217 my (@srcfiles) = @_;
218
219 # a few sanity checks
220 if (scalar (@srcfiles) == 0) {
221 print STDERR "util::cp_r no destination directory given\n";
222 return;
223 } elsif (-f $dest) {
224 print STDERR "util::cp_r destination must be a directory\n";
225 return;
226 }
227
228 # create destination directory if it doesn't exist already
229 if (! -d $dest) {
230 my $store_umask = umask(0002);
231 mkdir ($dest, 0777);
232 umask($store_umask);
233 }
234
235 # copy the files
236 foreach my $file (@srcfiles) {
237
238 if (!-e $file) {
239 print STDERR "util::cp_r $file does not exist\n";
240
241 } elsif (-d $file) {
242 # make the new directory
243 my ($filename) = $file =~ /([^\\\/]*)$/;
244 $dest = &util::filename_cat ($dest, $filename);
245 my $store_umask = umask(0002);
246 mkdir ($dest, 0777);
247 umask($store_umask);
248
249 # get the contents of this directory
250 if (!opendir (INDIR, $file)) {
251 print STDERR "util::cp_r could not open directory $file\n";
252 } else {
253 my @filedir = readdir (INDIR);
254 closedir (INDIR);
255 foreach my $f (@filedir) {
256 next if $f =~ /^\.\.?$/;
257 # copy all the files in this directory
258 my $ff = &util::filename_cat ($file, $f);
259 &cp_r ($ff, $dest);
260 }
261 }
262
263 } else {
264 &cp($file, $dest);
265 }
266 }
267}
268# recursively copies a file or group of files
269# syntax: cp_r (sourcefiles, destination directory)
270# destination must be a directory - to copy one file to
271# another use cp instead
272sub cp_r_nosvn {
273 my $dest = pop (@_);
274 my (@srcfiles) = @_;
275
276 # a few sanity checks
277 if (scalar (@srcfiles) == 0) {
278 print STDERR "util::cp_r no destination directory given\n";
279 return;
280 } elsif (-f $dest) {
281 print STDERR "util::cp_r destination must be a directory\n";
282 return;
283 }
284
285 # create destination directory if it doesn't exist already
286 if (! -d $dest) {
287 my $store_umask = umask(0002);
288 mkdir ($dest, 0777);
289 umask($store_umask);
290 }
291
292 # copy the files
293 foreach my $file (@srcfiles) {
294
295 if (!-e $file) {
296 print STDERR "util::cp_r $file does not exist\n";
297
298 } elsif (-d $file) {
299 # make the new directory
300 my ($filename) = $file =~ /([^\\\/]*)$/;
301 $dest = &util::filename_cat ($dest, $filename);
302 my $store_umask = umask(0002);
303 mkdir ($dest, 0777);
304 umask($store_umask);
305
306 # get the contents of this directory
307 if (!opendir (INDIR, $file)) {
308 print STDERR "util::cp_r could not open directory $file\n";
309 } else {
310 my @filedir = readdir (INDIR);
311 closedir (INDIR);
312 foreach my $f (@filedir) {
313 next if $f =~ /^\.\.?$/;
314 next if $f =~ /^\.svn$/;
315 # copy all the files in this directory
316 my $ff = &util::filename_cat ($file, $f);
317 &cp_r ($ff, $dest);
318 }
319 }
320
321 } else {
322 &cp($file, $dest);
323 }
324 }
325}
326
327# copies a directory and its contents, excluding subdirectories, into a new directory
328sub cp_r_toplevel {
329 my $dest = pop (@_);
330 my (@srcfiles) = @_;
331
332 # a few sanity checks
333 if (scalar (@srcfiles) == 0) {
334 print STDERR "util::cp_r no destination directory given\n";
335 return;
336 } elsif (-f $dest) {
337 print STDERR "util::cp_r destination must be a directory\n";
338 return;
339 }
340
341 # create destination directory if it doesn't exist already
342 if (! -d $dest) {
343 my $store_umask = umask(0002);
344 mkdir ($dest, 0777);
345 umask($store_umask);
346 }
347
348 # copy the files
349 foreach my $file (@srcfiles) {
350
351 if (!-e $file) {
352 print STDERR "util::cp_r $file does not exist\n";
353
354 } elsif (-d $file) {
355 # make the new directory
356 my ($filename) = $file =~ /([^\\\/]*)$/;
357 $dest = &util::filename_cat ($dest, $filename);
358 my $store_umask = umask(0002);
359 mkdir ($dest, 0777);
360 umask($store_umask);
361
362 # get the contents of this directory
363 if (!opendir (INDIR, $file)) {
364 print STDERR "util::cp_r could not open directory $file\n";
365 } else {
366 my @filedir = readdir (INDIR);
367 closedir (INDIR);
368 foreach my $f (@filedir) {
369 next if $f =~ /^\.\.?$/;
370
371 # copy all the files in this directory, but not directories
372 my $ff = &util::filename_cat ($file, $f);
373 if (-f $ff) {
374 &cp($ff, $dest);
375 #&cp_r ($ff, $dest);
376 }
377 }
378 }
379
380 } else {
381 &cp($file, $dest);
382 }
383 }
384}
385
386sub mk_dir {
387 my ($dir) = @_;
388
389 my $store_umask = umask(0002);
390 my $mkdir_ok = mkdir ($dir, 0777);
391 umask($store_umask);
392
393 if (!$mkdir_ok)
394 {
395 print STDERR "util::mk_dir could not create directory $dir\n";
396 return;
397 }
398}
399
400# in case anyone cares - I did some testing (using perls Benchmark module)
401# on this subroutine against File::Path::mkpath (). mk_all_dir() is apparently
402# slightly faster (surprisingly) - Stefan.
403sub mk_all_dir {
404 my ($dir) = @_;
405
406 # use / for the directory separator, remove duplicate and
407 # trailing slashes
408 $dir=~s/[\\\/]+/\//g;
409 $dir=~s/[\\\/]+$//;
410
411 # make sure the cache directory exists
412 my $dirsofar = "";
413 my $first = 1;
414 foreach my $dirname (split ("/", $dir)) {
415 $dirsofar .= "/" unless $first;
416 $first = 0;
417
418 $dirsofar .= $dirname;
419
420 next if $dirname =~ /^(|[a-z]:)$/i;
421 if (!-e $dirsofar)
422 {
423 my $store_umask = umask(0002);
424 my $mkdir_ok = mkdir ($dirsofar, 0777);
425 umask($store_umask);
426 if (!$mkdir_ok)
427 {
428 print STDERR "util::mk_all_dir could not create directory $dirsofar\n";
429 return;
430 }
431 }
432 }
433}
434
435# make hard link to file if supported by OS, otherwise copy the file
436sub hard_link {
437 my ($src, $dest, $verbosity) = @_;
438
439 # remove trailing slashes from source and destination files
440 $src =~ s/[\\\/]+$//;
441 $dest =~ s/[\\\/]+$//;
442
443## print STDERR "**** src = ", unicode::debug_unicode_string($src),"\n";
444 # a few sanity checks
445 if (-e $dest) {
446 # destination file already exists
447 return;
448 }
449 elsif (!-e $src) {
450 print STDERR "util::hard_link source file \"$src\" does not exist\n";
451 return 1;
452 }
453 elsif (-d $src) {
454 print STDERR "util::hard_link source \"$src\" is a directory\n";
455 return 1;
456 }
457
458 my $dest_dir = &File::Basename::dirname($dest);
459 mk_all_dir($dest_dir) if (!-e $dest_dir);
460
461
462 if (!link($src, $dest)) {
463 if ((!defined $verbosity) || ($verbosity>2)) {
464 print STDERR "util::hard_link: unable to create hard link. ";
465 print STDERR " Copying file: $src -> $dest\n";
466 }
467 &File::Copy::copy ($src, $dest);
468 }
469 return 0;
470}
471
472# make soft link to file if supported by OS, otherwise copy file
473sub soft_link {
474 my ($src, $dest, $ensure_paths_absolute) = @_;
475
476 # remove trailing slashes from source and destination files
477 $src =~ s/[\\\/]+$//;
478 $dest =~ s/[\\\/]+$//;
479
480 # Ensure file paths are absolute IF requested to do so
481 # Soft_linking didn't work for relative paths
482 if(defined $ensure_paths_absolute && $ensure_paths_absolute) {
483 # We need to ensure that the src file is the absolute path
484 # See http://perldoc.perl.org/File/Spec.html
485 if(!File::Spec->file_name_is_absolute( $src )) { # it's relative
486 $src = File::Spec->rel2abs($src); # make absolute
487 }
488 # Might as well ensure that the destination file's absolute path is used
489 if(!File::Spec->file_name_is_absolute( $dest )) {
490 $dest = File::Spec->rel2abs($dest); # make absolute
491 }
492 }
493
494 # a few sanity checks
495 if (!-e $src) {
496 print STDERR "util::soft_link source file $src does not exist\n";
497 return 0;
498 }
499
500 my $dest_dir = &File::Basename::dirname($dest);
501 mk_all_dir($dest_dir) if (!-e $dest_dir);
502
503 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
504 # symlink not supported on windows
505 &File::Copy::copy ($src, $dest);
506
507 } elsif (!eval {symlink($src, $dest)}) {
508 print STDERR "util::soft_link: unable to create soft link.\n";
509 return 0;
510 }
511
512 return 1;
513}
514
515# Primarily for filenames generated by processing
516# content of HTML files (which are mapped to UTF-8 internally)
517#
518# To turn this into an octet string that really exists on the file
519# system:
520# 1. don't need to do anything special for Unix-based systems
521# (as underlying file system is byte-code)
522# 2. need to map to short DOS filenames for Windows
523
524sub utf8_to_real_filename
525{
526 my ($utf8_filename) = @_;
527
528 my $real_filename;
529
530 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
531 require Win32;
532
533 print STDERR "***** utf8 filename = $utf8_filename\n\n\n";
534
535 my $unicode_filename = decode("utf8",$utf8_filename);
536 $real_filename = Win32::GetShortPathName($unicode_filename);
537 }
538 else {
539 $real_filename = $utf8_filename;
540 }
541
542 return $real_filename;
543}
544
545
546sub fd_exists
547{
548 my $filename_full_path = shift @_;
549 my $test_op = shift @_ || "-e";
550
551 # By default tests for existance of file or directory (-e)
552 # Can be made more specific by providing second parameter (e.g. -f or -d)
553
554 my $exists = 0;
555
556 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
557 require Win32;
558 my $filename_short_path = Win32::GetShortPathName($filename_full_path);
559 if (!defined $filename_short_path) {
560 # Was probably still in UTF8 form (not what is needed on Windows)
561 my $unicode_filename_full_path = eval "decode(\"utf8\",\$filename_full_path)";
562 if (defined $unicode_filename_full_path) {
563 $filename_short_path = Win32::GetShortPathName($unicode_filename_full_path);
564 }
565 }
566 $filename_full_path = $filename_short_path;
567 }
568
569 if (defined $filename_full_path) {
570 $exists = eval "($test_op \$filename_full_path)";
571 }
572
573 return $exists;
574}
575
576sub file_exists
577{
578 my ($filename_full_path) = @_;
579
580 return fd_exists($filename_full_path,"-f");
581}
582
583sub dir_exists
584{
585 my ($filename_full_path) = @_;
586
587 return fd_exists($filename_full_path,"-d");
588}
589
590
591
592# updates a copy of a directory in some other part of the filesystem
593# verbosity settings are: 0=low, 1=normal, 2=high
594# both $fromdir and $todir should be absolute paths
595sub cachedir {
596 my ($fromdir, $todir, $verbosity) = @_;
597 $verbosity = 1 unless defined $verbosity;
598
599 # use / for the directory separator, remove duplicate and
600 # trailing slashes
601 $fromdir=~s/[\\\/]+/\//g;
602 $fromdir=~s/[\\\/]+$//;
603 $todir=~s/[\\\/]+/\//g;
604 $todir=~s/[\\\/]+$//;
605
606 &mk_all_dir ($todir);
607
608 # get the directories in ascending order
609 if (!opendir (FROMDIR, $fromdir)) {
610 print STDERR "util::cachedir could not read directory $fromdir\n";
611 return;
612 }
613 my @fromdir = grep (!/^\.\.?$/, sort(readdir (FROMDIR)));
614 closedir (FROMDIR);
615
616 if (!opendir (TODIR, $todir)) {
617 print STDERR "util::cacedir could not read directory $todir\n";
618 return;
619 }
620 my @todir = grep (!/^\.\.?$/, sort(readdir (TODIR)));
621 closedir (TODIR);
622
623 my $fromi = 0;
624 my $toi = 0;
625
626 while ($fromi < scalar(@fromdir) || $toi < scalar(@todir)) {
627# print "fromi: $fromi toi: $toi\n";
628
629 # see if we should delete a file/directory
630 # this should happen if the file/directory
631 # is not in the from list or if its a different
632 # size, or has an older timestamp
633 if ($toi < scalar(@todir)) {
634 if (($fromi >= scalar(@fromdir)) ||
635 ($todir[$toi] lt $fromdir[$fromi] ||
636 ($todir[$toi] eq $fromdir[$fromi] &&
637 &differentfiles("$fromdir/$fromdir[$fromi]","$todir/$todir[$toi]",
638 $verbosity)))) {
639
640 # the files are different
641 &rm_r("$todir/$todir[$toi]");
642 splice(@todir, $toi, 1); # $toi stays the same
643
644 } elsif ($todir[$toi] eq $fromdir[$fromi]) {
645 # the files are the same
646 # if it is a directory, check its contents
647 if (-d "$todir/$todir[$toi]") {
648 &cachedir ("$fromdir/$fromdir[$fromi]",
649 "$todir/$todir[$toi]", $verbosity);
650 }
651
652 $toi++;
653 $fromi++;
654 next;
655 }
656 }
657
658 # see if we should insert a file/directory
659 # we should insert a file/directory if there
660 # is no tofiles left or if the tofile does not exist
661 if ($fromi < scalar(@fromdir) && ($toi >= scalar(@todir) ||
662 $todir[$toi] gt $fromdir[$fromi])) {
663 &cp_r ("$fromdir/$fromdir[$fromi]", "$todir/$fromdir[$fromi]");
664 splice (@todir, $toi, 0, $fromdir[$fromi]);
665
666 $toi++;
667 $fromi++;
668 }
669 }
670}
671
672# this function returns -1 if either file is not found
673# assumes that $file1 and $file2 are absolute file names or
674# in the current directory
675# $file2 is allowed to be newer than $file1
676sub differentfiles {
677 my ($file1, $file2, $verbosity) = @_;
678 $verbosity = 1 unless defined $verbosity;
679
680 $file1 =~ s/\/+$//;
681 $file2 =~ s/\/+$//;
682
683 my ($file1name) = $file1 =~ /\/([^\/]*)$/;
684 my ($file2name) = $file2 =~ /\/([^\/]*)$/;
685
686 return -1 unless (-e $file1 && -e $file2);
687 if ($file1name ne $file2name) {
688 print STDERR "filenames are not the same\n" if ($verbosity >= 2);
689 return 1;
690 }
691
692 my @file1stat = stat ($file1);
693 my @file2stat = stat ($file2);
694
695 if (-d $file1) {
696 if (! -d $file2) {
697 print STDERR "one file is a directory\n" if ($verbosity >= 2);
698 return 1;
699 }
700 return 0;
701 }
702
703 # both must be regular files
704 unless (-f $file1 && -f $file2) {
705 print STDERR "one file is not a regular file\n" if ($verbosity >= 2);
706 return 1;
707 }
708
709 # the size of the files must be the same
710 if ($file1stat[7] != $file2stat[7]) {
711 print STDERR "different sized files\n" if ($verbosity >= 2);
712 return 1;
713 }
714
715 # the second file cannot be older than the first
716 if ($file1stat[9] > $file2stat[9]) {
717 print STDERR "file is older\n" if ($verbosity >= 2);
718 return 1;
719 }
720
721 return 0;
722}
723
724
725sub get_tmp_filename
726{
727 my $file_ext = shift(@_) || undef;
728
729 my $opt_dot_file_ext = "";
730 if (defined $file_ext) {
731 if ($file_ext !~ m/\./) {
732 # no dot, so needs one added in at start
733 $opt_dot_file_ext = ".$file_ext"
734 }
735 else {
736 # allow for "extensions" such as _metadata.txt to be handled
737 # gracefully
738 $opt_dot_file_ext = $file_ext;
739 }
740 }
741
742 my $tmpdir = filename_cat($ENV{'GSDLHOME'}, "tmp");
743 &mk_all_dir ($tmpdir) unless -e $tmpdir;
744
745 my $count = 1000;
746 my $rand = int(rand $count);
747 my $full_tmp_filename = &filename_cat($tmpdir, "F$rand$opt_dot_file_ext");
748
749 while (-e $full_tmp_filename) {
750 $rand = int(rand $count);
751 $full_tmp_filename = &filename_cat($tmpdir, "F$rand$opt_dot_file_ext");
752 $count++;
753 }
754
755 return $full_tmp_filename;
756}
757
758sub get_timestamped_tmp_folder
759{
760
761 my $tmp_dirname;
762 if(defined $ENV{'GSDLCOLLECTDIR'}) {
763 $tmp_dirname = $ENV{'GSDLCOLLECTDIR'};
764 } elsif(defined $ENV{'GSDLHOME'}) {
765 $tmp_dirname = $ENV{'GSDLHOME'};
766 } else {
767 return undef;
768 }
769
770 $tmp_dirname = &util::filename_cat($tmp_dirname, "tmp");
771 &util::mk_dir($tmp_dirname) if (!-e $tmp_dirname);
772
773 # add the timestamp into the path otherwise we can run into problems
774 # if documents have the same name
775 my $timestamp = time;
776 my $time_tmp_dirname = &util::filename_cat($tmp_dirname, $timestamp);
777 $tmp_dirname = $time_tmp_dirname;
778 my $i = 1;
779 while (-e $tmp_dirname) {
780 $tmp_dirname = "$time_tmp_dirname$i";
781 $i++;
782 }
783 &util::mk_dir($tmp_dirname);
784
785 return $tmp_dirname;
786}
787
788sub get_timestamped_tmp_filename_in_collection
789{
790
791 my ($input_filename, $output_ext) = @_;
792 # derive tmp filename from input filename
793 my ($tailname, $dirname, $suffix)
794 = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
795
796 # softlink to collection tmp dir
797 my $tmp_dirname = &util::get_timestamped_tmp_folder();
798 $tmp_dirname = $dirname unless defined $tmp_dirname;
799
800 # following two steps copied from ConvertBinaryFile
801 # do we need them?? can't use them as is, as they use plugin methods.
802
803 #$tailname = $self->SUPER::filepath_to_utf8($tailname) unless &unicode::check_is_utf8($tailname);
804
805 # URLEncode this since htmls with images where the html filename is utf8 don't seem
806 # to work on Windows (IE or Firefox), as browsers are looking for filesystem-encoded
807 # files on the filesystem.
808 #$tailname = &util::rename_file($tailname, $self->{'file_rename_method'}, "without_suffix");
809 if (defined $output_ext) {
810 $output_ext = ".$output_ext"; # add the dot
811 } else {
812 $output_ext = $suffix;
813 }
814 $output_ext= lc($output_ext);
815 my $tmp_filename = &util::filename_cat($tmp_dirname, "$tailname$output_ext");
816
817 return $tmp_filename;
818}
819
820sub get_toplevel_tmp_dir
821{
822 return filename_cat($ENV{'GSDLHOME'}, "tmp");
823}
824
825
826sub filename_to_regex {
827 my $filename = shift (@_);
828
829 # need to put single backslash back to double so that regex works
830 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
831 $filename =~ s/\\/\\\\/g;
832 }
833 return $filename;
834}
835
836sub filename_cat {
837 my $first_file = shift(@_);
838 my (@filenames) = @_;
839
840# Useful for debugging
841# -- might make sense to call caller(0) rather than (1)??
842# my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(1);
843# print STDERR "Calling method: $cfilename:$cline $cpackage->$csubr\n";
844
845 # If first_file is not null or empty, then add it back into the list
846 if (defined $first_file && $first_file =~ /\S/) {
847 unshift(@filenames, $first_file);
848 }
849
850 my $filename = join("/", @filenames);
851
852 # remove duplicate slashes and remove the last slash
853 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
854 $filename =~ s/[\\\/]+/\\/g;
855 } else {
856 $filename =~ s/[\/]+/\//g;
857 # DB: want a filename abc\de.html to remain like this
858 }
859 $filename =~ s/[\\\/]$//;
860
861 return $filename;
862}
863
864
865sub pathname_cat {
866 my $first_path = shift(@_);
867 my (@pathnames) = @_;
868
869 # If first_path is not null or empty, then add it back into the list
870 if (defined $first_path && $first_path =~ /\S/) {
871 unshift(@pathnames, $first_path);
872 }
873
874 my $join_char;
875 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
876 $join_char = ";";
877 } else {
878 $join_char = ":";
879 }
880
881 my $pathname = join($join_char, @pathnames);
882
883 # remove duplicate slashes
884 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
885 $pathname =~ s/[\\\/]+/\\/g;
886 } else {
887 $pathname =~ s/[\/]+/\//g;
888 # DB: want a pathname abc\de.html to remain like this
889 }
890
891 return $pathname;
892}
893
894
895sub tidy_up_oid {
896 my ($OID) = @_;
897 if ($OID =~ /\./) {
898 print STDERR "Warning, identifier $OID contains periods (.), removing them\n";
899 $OID =~ s/\.//g; #remove any periods
900 }
901 if ($OID =~ /^\s.*\s$/) {
902 print STDERR "Warning, identifier $OID starts or ends with whitespace. Removing it\n";
903 # remove starting and trailing whitespace
904 $OID =~ s/^\s+//;
905 $OID =~ s/\s+$//;
906 }
907 if ($OID =~ /^[\d]*$/) {
908 print STDERR "Warning, identifier $OID contains only digits. Prepending 'D'.\n";
909 $OID = "D" . $OID;
910 }
911
912 return $OID;
913}
914sub envvar_prepend {
915 my ($var,$val) = @_;
916
917 # do not prepend any value/path that's already in the environment variable
918 if ($ENV{'GSDLOS'} =~ /^windows$/i)
919 {
920 my $escaped_val = $val;
921 $escaped_val =~ s/\\/\\\\/g; # escape any Windows backslashes for upcoming regex
922 if (!defined($ENV{$var})) {
923 $ENV{$var} = "$val";
924 }
925 elsif($ENV{$var} !~ m/$escaped_val/) {
926 $ENV{$var} = "$val;".$ENV{$var};
927 }
928 }
929 else {
930 if (!defined($ENV{$var})) {
931 $ENV{$var} = "$val";
932 }
933 elsif($ENV{$var} !~ m/$val/) {
934 $ENV{$var} = "$val:".$ENV{$var};
935 }
936 }
937}
938
939sub envvar_append {
940 my ($var,$val) = @_;
941
942 # do not append any value/path that's already in the environment variable
943 if ($ENV{'GSDLOS'} =~ /^windows$/i)
944 {
945 my $escaped_val = $val;
946 $escaped_val =~ s/\\/\\\\/g; # escape any Windows backslashes for upcoming regex
947 if (!defined($ENV{$var})) {
948 $ENV{$var} = "$val";
949 }
950 elsif($ENV{$var} !~ m/$escaped_val/) {
951 $ENV{$var} .= ";$val";
952 }
953 }
954 else {
955 if (!defined($ENV{$var})) {
956 $ENV{$var} = "$val";
957 }
958 elsif($ENV{$var} !~ m/$val/) {
959 $ENV{$var} .= ":$val";
960 }
961 }
962}
963
964
965# splits a filename into a prefix and a tail extension using the tail_re, or
966# if that fails, splits on the file_extension . (dot)
967sub get_prefix_and_tail_by_regex {
968
969 my ($filename,$tail_re) = @_;
970
971 my ($file_prefix,$file_ext) = ($filename =~ m/^(.*?)($tail_re)$/);
972 if ((!defined $file_prefix) || (!defined $file_ext)) {
973 ($file_prefix,$file_ext) = ($filename =~ m/^(.*)(\..*?)$/);
974 }
975
976 return ($file_prefix,$file_ext);
977}
978
979# get full path and file only path from a base_dir (which may be empty) and
980# file (which may contain directories)
981sub get_full_filenames {
982 my ($base_dir, $file) = @_;
983
984 my $filename_full_path = $file;
985 # add on directory if present
986 $filename_full_path = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\S/;
987
988 my $filename_no_path = $file;
989
990 # remove directory if present
991 $filename_no_path =~ s/^.*[\/\\]//;
992 return ($filename_full_path, $filename_no_path);
993}
994
995# returns the path of a file without the filename -- ie. the directory the file is in
996sub filename_head {
997 my $filename = shift(@_);
998
999 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1000 $filename =~ s/[^\\\\]*$//;
1001 }
1002 else {
1003 $filename =~ s/[^\\\/]*$//;
1004 }
1005
1006 return $filename;
1007}
1008
1009
1010
1011# returns 1 if filename1 and filename2 point to the same
1012# file or directory
1013sub filenames_equal {
1014 my ($filename1, $filename2) = @_;
1015
1016 # use filename_cat to clean up trailing slashes and
1017 # multiple slashes
1018 $filename1 = filename_cat ($filename1);
1019 $filename2 = filename_cat ($filename2);
1020
1021 # filenames not case sensitive on windows
1022 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1023 $filename1 =~ tr/[A-Z]/[a-z]/;
1024 $filename2 =~ tr/[A-Z]/[a-z]/;
1025 }
1026 return 1 if $filename1 eq $filename2;
1027 return 0;
1028}
1029
1030
1031sub filename_within_directory
1032{
1033 my ($filename,$within_dir) = @_;
1034
1035 if ($within_dir !~ m/[\/\\]$/) {
1036 my $dirsep = &util::get_dirsep();
1037 $within_dir .= $dirsep;
1038 }
1039
1040 $within_dir =~ s/\\/\\\\/g; # escape DOS style file separator
1041
1042 if ($filename =~ m/^$within_dir(.*)$/) {
1043 $filename = $1;
1044 }
1045
1046 return $filename;
1047}
1048
1049sub filename_within_collection
1050{
1051 my ($filename) = @_;
1052
1053 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
1054
1055 if (defined $collect_dir) {
1056
1057 # if from within GSDLCOLLECTDIR, then remove directory prefix
1058 # so source_filename is realative to it. This is done to aid
1059 # portability, i.e. the collection can be moved to somewhere
1060 # else on the file system and the archives directory will still
1061 # work. This is needed, for example in the applet version of
1062 # GLI where GSDLHOME/collect on the server will be different to
1063 # the collect directory of the remove user. Of course,
1064 # GSDLCOLLECTDIR subsequently needs to be put back on to turn
1065 # it back into a full pathname.
1066
1067 $filename = filename_within_directory($filename,$collect_dir);
1068 }
1069
1070 return $filename;
1071}
1072
1073sub prettyprint_file
1074{
1075 my ($base_dir,$file) = @_;
1076
1077 my $filename_full_path = &util::filename_cat($base_dir,$file);
1078
1079 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
1080 require Win32;
1081
1082 # For some reason base_dir in the form c:/a/b/c
1083 # This leads to confusion later on, so turn it back into
1084 # the more usual Windows form
1085 $base_dir =~ s/\//\\/g;
1086 my $long_base_dir = Win32::GetLongPathName($base_dir);
1087 my $long_full_path = Win32::GetLongPathName($filename_full_path);
1088
1089 $file = filename_within_directory($long_full_path,$long_base_dir);
1090 }
1091
1092 return $file;
1093}
1094
1095
1096sub upgrade_if_dos_filename
1097{
1098 my ($filename_full_path,$and_encode) = @_;
1099
1100 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
1101 # Ensure any DOS-like filename, such as test~1.txt, has been upgraded
1102 # to its long (Windows) version
1103 $filename_full_path = Win32::GetLongPathName($filename_full_path);
1104 # Make sure initial drive letter is lower-case (to fit in with rest of Greenstone)
1105 $filename_full_path =~ s/^(.)/\l$1/;
1106 if ((defined $and_encode) && ($and_encode)) {
1107 $filename_full_path = encode("utf8",$filename_full_path);
1108 }
1109 }
1110
1111 return $filename_full_path;
1112}
1113
1114
1115sub downgrade_if_dos_filename
1116{
1117 my ($filename_full_path) = @_;
1118
1119 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
1120 require Win32;
1121
1122 # Ensure the given long Windows filename is in a form that can
1123 # be opened by Perl => convert it to a short DOS-like filename
1124
1125 my $short_filename = Win32::GetShortPathName($filename_full_path);
1126 if (defined $short_filename) {
1127 $filename_full_path = $short_filename;
1128
1129 # Make sure initial drive letter is lower-case (to fit in
1130 # with rest of Greenstone)
1131 $filename_full_path =~ s/^(.)/\l$1/;
1132 }
1133 }
1134
1135 return $filename_full_path;
1136}
1137
1138
1139sub filename_is_absolute
1140{
1141 my ($filename) = @_;
1142
1143 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1144 return ($filename =~ m/^(\w:)?\\/);
1145 }
1146 else {
1147 return ($filename =~ m/^\//);
1148 }
1149}
1150
1151
1152## @method make_absolute()
1153#
1154# Ensure the given file path is absolute in respect to the given base path.
1155#
1156# @param $base_dir A string denoting the base path the given dir must be
1157# absolute to.
1158# @param $dir The directory to be made absolute as a string. Note that the
1159# dir may already be absolute, in which case it will remain
1160# unchanged.
1161# @return The now absolute form of the directory as a string.
1162#
1163# @author John Thompson, DL Consulting Ltd.
1164# @copy 2006 DL Consulting Ltd.
1165#
1166#used in buildcol.pl, doesn't work for all cases --kjdon
1167sub make_absolute {
1168
1169 my ($base_dir, $dir) = @_;
1170### print STDERR "dir = $dir\n";
1171 $dir =~ s/[\\\/]+/\//g;
1172 $dir = $base_dir . "/$dir" unless ($dir =~ m|^(\w:)?/|);
1173 $dir =~ s|^/tmp_mnt||;
1174 1 while($dir =~ s|/[^/]*/\.\./|/|g);
1175 $dir =~ s|/[.][.]?/|/|g;
1176 $dir =~ tr|/|/|s;
1177### print STDERR "dir = $dir\n";
1178
1179 return $dir;
1180}
1181## make_absolute() ##
1182
1183sub get_dirsep {
1184
1185 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1186 return "\\";
1187 } else {
1188 return "\/";
1189 }
1190}
1191
1192sub get_os_dirsep {
1193
1194 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1195 return "\\\\";
1196 } else {
1197 return "\\\/";
1198 }
1199}
1200
1201sub get_re_dirsep {
1202
1203 return "\\\\|\\\/";
1204}
1205
1206
1207sub get_dirsep_tail {
1208 my ($filename) = @_;
1209
1210 # returns last part of directory or filename
1211 # On unix e.g. a/b.d => b.d
1212 # a/b/c => c
1213
1214 my $dirsep = get_re_dirsep();
1215 my @dirs = split (/$dirsep/, $filename);
1216 my $tail = pop @dirs;
1217
1218 # - caused problems under windows
1219 #my ($tail) = ($filename =~ m/^(?:.*?$dirsep)?(.*?)$/);
1220
1221 return $tail;
1222}
1223
1224
1225# if this is running on windows we want binaries to end in
1226# .exe, otherwise they don't have to end in any extension
1227sub get_os_exe {
1228 return ".exe" if $ENV{'GSDLOS'} =~ /^windows$/i;
1229 return "";
1230}
1231
1232
1233# test to see whether this is a big or little endian machine
1234sub is_little_endian
1235{
1236 # To determine the name of the operating system, the variable $^O is a cheap alternative to pulling it out of the Config module;
1237 # 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
1238 # Otherwise, it's little endian
1239
1240 #return 0 if $^O =~ /^darwin$/i;
1241 #return 0 if $ENV{'GSDLOS'} =~ /^darwin$/i;
1242
1243 # Going back to stating exactly whether the machine is little endian
1244 # or big endian, without any special case for Macs. Since for rata it comes
1245 # back with little endian and for shuttle with bigendian.
1246 return (ord(substr(pack("s",1), 0, 1)) == 1);
1247}
1248
1249
1250# will return the collection name if successful, "" otherwise
1251sub use_collection {
1252 my ($collection, $collectdir) = @_;
1253
1254 if (!defined $collectdir || $collectdir eq "") {
1255 $collectdir = &filename_cat ($ENV{'GSDLHOME'}, "collect");
1256 }
1257
1258 # get and check the collection
1259 if (!defined($collection) || $collection eq "") {
1260 if (defined $ENV{'GSDLCOLLECTION'}) {
1261 $collection = $ENV{'GSDLCOLLECTION'};
1262 } else {
1263 print STDOUT "No collection specified\n";
1264 return "";
1265 }
1266 }
1267
1268 if ($collection eq "modelcol") {
1269 print STDOUT "You can't use modelcol.\n";
1270 return "";
1271 }
1272
1273 # make sure the environment variables GSDLCOLLECTION and GSDLCOLLECTDIR
1274 # are defined
1275 $ENV{'GSDLCOLLECTION'} = $collection;
1276 $ENV{'GSDLCOLLECTDIR'} = &filename_cat ($collectdir, $collection);
1277
1278 # make sure this collection exists
1279 if (!-e $ENV{'GSDLCOLLECTDIR'}) {
1280 print STDOUT "Invalid collection ($collection).\n";
1281 return "";
1282 }
1283
1284 # everything is ready to go
1285 return $collection;
1286}
1287
1288sub get_current_collection_name {
1289 return $ENV{'GSDLCOLLECTION'};
1290}
1291
1292
1293# will return the collection name if successful, "" otherwise.
1294# Like use_collection (above) but for greenstone 3 (taking account of site level)
1295
1296sub use_site_collection {
1297 my ($site, $collection, $collectdir) = @_;
1298
1299 if (!defined $collectdir || $collectdir eq "") {
1300 die "GSDL3HOME not set.\n" unless defined $ENV{'GSDL3HOME'};
1301 $collectdir = &filename_cat ($ENV{'GSDL3HOME'}, "sites", $site, "collect");
1302 }
1303
1304 # collectdir explicitly set by this point (using $site variable if required).
1305 # Can call "old" gsdl2 use_collection now.
1306
1307 return use_collection($collection,$collectdir);
1308}
1309
1310
1311
1312sub locate_config_file
1313{
1314 my ($file) = @_;
1315
1316 my $locations = locate_config_files($file);
1317
1318 return shift @$locations; # returns undef if 'locations' is empty
1319}
1320
1321
1322sub locate_config_files
1323{
1324 my ($file) = @_;
1325
1326 my @locations = ();
1327
1328 if (-e $file) {
1329 # Clearly specified (most likely full filename)
1330 # No need to hunt in 'etc' directories, return value unchanged
1331 push(@locations,$file);
1332 }
1333 else {
1334 # Check for collection specific one before looking in global GSDL 'etc'
1335 if (defined $ENV{'GSDLCOLLECTDIR'} && $ENV{'GSDLCOLLECTDIR'} ne "") {
1336 my $test_collect_etc_filename
1337 = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},"etc", $file);
1338
1339 if (-e $test_collect_etc_filename) {
1340 push(@locations,$test_collect_etc_filename);
1341 }
1342 }
1343 my $test_main_etc_filename
1344 = &util::filename_cat($ENV{'GSDLHOME'},"etc", $file);
1345 if (-e $test_main_etc_filename) {
1346 push(@locations,$test_main_etc_filename);
1347 }
1348 }
1349
1350 return \@locations;
1351}
1352
1353
1354sub hyperlink_text
1355{
1356 my ($text) = @_;
1357
1358 $text =~ s/(http:\/\/[^\s]+)/<a href=\"$1\">$1<\/a>/mg;
1359 $text =~ s/(^|\s+)(www\.(\w|\.)+)/<a href=\"http:\/\/$2\">$2<\/a>/mg;
1360
1361 return $text;
1362}
1363
1364
1365# A method to check if a directory is empty (note that an empty directory still has non-zero size!!!)
1366# Code is from http://episteme.arstechnica.com/eve/forums/a/tpc/f/6330927813/m/436007700831
1367sub is_dir_empty
1368{
1369 my ($path) = @_;
1370 opendir DIR, $path;
1371 while(my $entry = readdir DIR) {
1372 next if($entry =~ /^\.\.?$/);
1373 closedir DIR;
1374 return 0;
1375 }
1376 closedir DIR;
1377 return 1;
1378}
1379
1380# Returns the given filename converted using either URL encoding or base64
1381# encoding, as specified by $rename_method. If the given filename has no suffix
1382# (if it is just the tailname), then $no_suffix should be some defined value.
1383# rename_method can be url, none, base64
1384sub rename_file {
1385 my ($filename, $rename_method, $no_suffix) = @_;
1386
1387 if(!$filename) { # undefined or empty string
1388 return $filename;
1389 }
1390
1391 if (!$rename_method) {
1392 print STDERR "WARNING: no file renaming method specified. Defaulting to using URL encoding...\n";
1393 # Debugging information
1394 # my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(1);
1395 # print STDERR "Called from method: $cfilename:$cline $cpackage->$csubr\n";
1396 $rename_method = "url";
1397 } elsif($rename_method eq "none") {
1398 return $filename; # would have already been renamed
1399 }
1400
1401 # No longer replace spaces with underscores, since underscores mess with incremental rebuild
1402 ### Replace spaces with underscore. Do this first else it can go wrong below when getting tailname
1403 ###$filename =~ s/ /_/g;
1404
1405 my ($tailname,$dirname,$suffix);
1406 if($no_suffix) { # given a tailname, no suffix
1407 ($tailname,$dirname) = File::Basename::fileparse($filename);
1408 }
1409 else {
1410 ($tailname,$dirname,$suffix) = File::Basename::fileparse($filename, "\\.(?:[^\\.]+?)\$");
1411 }
1412 if (!$suffix) {
1413 $suffix = "";
1414 }
1415 else {
1416 $suffix = lc($suffix);
1417 }
1418
1419 if ($rename_method eq "url") {
1420 $tailname = &unicode::url_encode($tailname);
1421 }
1422 elsif ($rename_method eq "base64") {
1423 $tailname = &unicode::base64_encode($tailname);
1424 $tailname =~ s/\s*//sg; # for some reason it adds spaces not just at end but also in middle
1425 }
1426
1427 $filename = "$tailname$suffix";
1428 $filename = "$dirname$filename" if ($dirname ne "./" && $dirname ne ".\\");
1429
1430 return $filename;
1431}
1432
1433
1434# BACKWARDS COMPATIBILITY: Just in case there are old .ldb/.bdb files
1435sub rename_ldb_or_bdb_file {
1436 my ($filename_no_ext) = @_;
1437
1438 my $new_filename = "$filename_no_ext.gdb";
1439 return if (-f $new_filename); # if the file has the right extension, don't need to do anything
1440 # try ldb
1441 my $old_filename = "$filename_no_ext.ldb";
1442
1443 if (-f $old_filename) {
1444 print STDERR "Renaming $old_filename to $new_filename\n";
1445 rename ($old_filename, $new_filename)
1446 || print STDERR "Rename failed: $!\n";
1447 return;
1448 }
1449 # try bdb
1450 $old_filename = "$filename_no_ext.bdb";
1451 if (-f $old_filename) {
1452 print STDERR "Renaming $old_filename to $new_filename\n";
1453 rename ($old_filename, $new_filename)
1454 || print STDERR "Rename failed: $!\n";
1455 return;
1456 }
1457}
1458
1459
1460# Returns the greenstone URL prefix extracted from the appropriate GS2/GS3 config file.
1461# By default, /greenstone3 for GS3 or /greenstone for GS2.
1462sub get_greenstone_url_prefix() {
1463 # if already set on a previous occasion, just return that
1464 # (Don't want to keep repeating this: cost of re-opening and scanning files.)
1465 return $ENV{'GREENSTONE_URL_PREFIX'} if($ENV{'GREENSTONE_URL_PREFIX'});
1466
1467 my ($configfile, $urlprefix, $defaultUrlprefix);
1468 my @propertynames = ();
1469
1470 if($ENV{'GSDL3SRCHOME'}) {
1471 $defaultUrlprefix = "/greenstone3";
1472 $configfile = &util::filename_cat($ENV{'GSDL3SRCHOME'}, "packages", "tomcat", "conf", "Catalina", "localhost", "greenstone3.xml");
1473 push(@propertynames, qw/path\s*\=/);
1474 } else {
1475 $defaultUrlprefix = "/greenstone";
1476 $configfile = &util::filename_cat($ENV{'GSDLHOME'}, "cgi-bin", "gsdlsite.cfg");
1477 push(@propertynames, (qw/\nhttpprefix/, qw/\ngwcgi/)); # inspect one property then the other
1478 }
1479
1480 $urlprefix = &extract_propvalue_from_file($configfile, \@propertynames);
1481
1482 if(!$urlprefix) { # no values found for URL prefix, use default values
1483 $urlprefix = $defaultUrlprefix;
1484 } else {
1485 #gwcgi can contain more than the wanted prefix, we split on / to get the first "directory" level
1486 $urlprefix =~ s/^\///; # remove the starting slash
1487 my @dirs = split(/(\\|\/)/, $urlprefix);
1488 $urlprefix = shift(@dirs);
1489
1490 if($urlprefix !~ m/^\//) { # in all cases: ensure the required forward slash is at the front
1491 $urlprefix = "/$urlprefix";
1492 }
1493 }
1494
1495 # set for the future
1496 $ENV{'GREENSTONE_URL_PREFIX'} = $urlprefix;
1497# print STDERR "*** in get_greenstone_url_prefix(): $urlprefix\n\n";
1498 return $urlprefix;
1499}
1500
1501
1502# Given a config file (xml or java properties file) and a list/array of regular expressions
1503# that represent property names to match on, this function will return the value for the 1st
1504# matching property name. If the return value is undefined, no matching property was found.
1505sub extract_propvalue_from_file() {
1506 my ($configfile, $propertynames) = @_;
1507
1508 my $value;
1509 unless(open(FIN, "<$configfile")) {
1510 print STDERR "extract_propvalue_from_file(): Unable to open $configfile. $!\n";
1511 return $value; # not initialised
1512 }
1513
1514 # Read the entire file at once, as one single line, then close it
1515 my $filecontents;
1516 {
1517 local $/ = undef;
1518 $filecontents = <FIN>;
1519 }
1520 close(FIN);
1521
1522 foreach my $regex (@$propertynames) {
1523 ($value) = $filecontents=~ m/$regex\s*(\S*)/s; # read value of the property given by regex up to the 1st space
1524 if($value) {
1525 $value =~ s/^\"//; # remove any startquotes
1526 $value =~ s/\".*$//; # remove the 1st endquotes (if any) followed by any xml
1527 last; # found value for a matching property, break from loop
1528 }
1529 }
1530
1531 return $value;
1532}
1533
1534# Subroutine that sources setup.bash, given GSDLHOME and GSDLOS and
1535# given that perllib is in @INC in order to invoke this subroutine.
1536# Call as follows -- after setting up INC to include perllib and
1537# after setting up GSDLHOME and GSDLOS:
1538#
1539# require util;
1540# &util::setup_greenstone_env($ENV{'GSDLHOME'}, $ENV{'GSDLOS'});
1541#
1542sub setup_greenstone_env() {
1543 my ($GSDLHOME, $GSDLOS) = @_;
1544
1545 #my %env_map = ();
1546 # Get the localised ENV settings of running a localised source setup.bash
1547 # and put it into the ENV here. Need to clear GSDLHOME before running setup
1548 #my $perl_command = "(cd $GSDLHOME; export GSDLHOME=; . ./setup.bash > /dev/null; env)";
1549 my $perl_command = "(cd $GSDLHOME; /bin/bash -c \"export GSDLHOME=; source setup.bash > /dev/null; env\")";
1550 if($GSDLOS =~ m/windows/i) {
1551 #$perl_command = "cmd /C \"cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set\"";
1552 $perl_command = "(cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set)";
1553 }
1554 if (!open(PIN, "$perl_command |")) {
1555 print STDERR ("Unable to execute command: $perl_command. $!\n");
1556 }
1557
1558 while (defined (my $perl_output_line = <PIN>)) {
1559 my($key,$value) = ($perl_output_line =~ m/^([^=]*)[=](.*)$/);
1560 #$env_map{$key}=$value;
1561 $ENV{$key}=$value;
1562 }
1563
1564 # If any keys in $ENV don't occur in Greenstone's localised env
1565 # (stored in $env_map), delete those entries from $ENV
1566 #foreach $key (keys %ENV) {
1567 # if(!defined $env_map{$key}) {
1568 # print STDOUT "**** DELETING ENV KEY: $key\tVALUE: $ENV{'$key'}\n";
1569 # delete $ENV{$key}; # del $ENV(key, value) pair
1570 # }
1571 #}
1572 #undef %env_map;
1573}
1574
15751;
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