source: main/trunk/greenstone2/perllib/util.pm@ 26976

Last change on this file since 26976 was 26976, checked in by ak19, 11 years ago

First commit for RSS support: copying rss-items.rdf file across from archives to building, so that eventually it will be copied into the index dir as is required.

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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# Config for getting the perlpath in the recommended way, though it uses paths that are
34# hard-coded into the Config file that's generated upon configuring and compiling perl.
35# $^X works better in some cases to return the path to perl used to launch the script,
36# but if launched with plain "perl" (no full-path), that will be just what it returns.
37use Config;
38
39# removes files (but not directories)
40sub rm {
41 my (@files) = @_;
42
43 my @filefiles = ();
44
45 # make sure the files we want to delete exist
46 # and are regular files
47 foreach my $file (@files) {
48 if (!-e $file) {
49 print STDERR "util::rm $file does not exist\n";
50 } elsif ((!-f $file) && (!-l $file)) {
51 print STDERR "util::rm $file is not a regular (or symbolic) file\n";
52 } else {
53 push (@filefiles, $file);
54 }
55 }
56
57 # remove the files
58 my $numremoved = unlink @filefiles;
59
60 # check to make sure all of them were removed
61 if ($numremoved != scalar(@filefiles)) {
62 print STDERR "util::rm Not all files were removed\n";
63 }
64}
65
66# removes files (but not directories) - can rename this to the default
67# "rm" subroutine when debugging the deletion of individual files.
68sub rm_debug {
69 my (@files) = @_;
70 my @filefiles = ();
71
72 # make sure the files we want to delete exist
73 # and are regular files
74 foreach my $file (@files) {
75 if (!-e $file) {
76 print STDERR "util::rm $file does not exist\n";
77 } elsif ((!-f $file) && (!-l $file)) {
78 print STDERR "util::rm $file is not a regular (or symbolic) file\n";
79 } else { # debug message
80 unlink($file) or warn "Could not delete file $file: $!\n";
81 }
82 }
83}
84
85
86# recursive removal
87sub filtered_rm_r {
88 my ($files,$file_accept_re,$file_reject_re) = @_;
89
90# my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(2);
91# my ($lcfilename) = ($cfilename =~ m/([^\\\/]*)$/);
92# print STDERR "** Calling method (2): $lcfilename:$cline $cpackage->$csubr\n";
93
94 my @files_array = (ref $files eq "ARRAY") ? @$files : ($files);
95
96 # recursively remove the files
97 foreach my $file (@files_array) {
98 $file =~ s/[\/\\]+$//; # remove trailing slashes
99
100 if (!-e $file) {
101 print STDERR "util::filtered_rm_r $file does not exist\n";
102
103 } elsif ((-d $file) && (!-l $file)) { # don't recurse down symbolic link
104 # get the contents of this directory
105 if (!opendir (INDIR, $file)) {
106 print STDERR "util::filtered_rm_r could not open directory $file\n";
107 } else {
108 my @filedir = grep (!/^\.\.?$/, readdir (INDIR));
109 closedir (INDIR);
110
111 # remove all the files in this directory
112 map {$_="$file/$_";} @filedir;
113 &filtered_rm_r (\@filedir,$file_accept_re,$file_reject_re);
114
115 if (!defined $file_accept_re && !defined $file_reject_re) {
116 # remove this directory
117 if (!rmdir $file) {
118 print STDERR "util::filtered_rm_r couldn't remove directory $file\n";
119 }
120 }
121 }
122 } else {
123 next if (defined $file_reject_re && ($file =~ m/$file_reject_re/));
124
125 if ((!defined $file_accept_re) || ($file =~ m/$file_accept_re/)) {
126 # remove this file
127 &rm ($file);
128 }
129 }
130 }
131}
132
133
134# recursive removal
135sub rm_r {
136 my (@files) = @_;
137
138 # use the more general (but reterospectively written function
139 # filtered_rm_r function()
140
141 filtered_rm_r(\@files,undef,undef); # no accept or reject expressions
142}
143
144
145
146
147# moves a file or a group of files
148sub mv {
149 my $dest = pop (@_);
150 my (@srcfiles) = @_;
151
152 # remove trailing slashes from source and destination files
153 $dest =~ s/[\\\/]+$//;
154 map {$_ =~ s/[\\\/]+$//;} @srcfiles;
155
156 # a few sanity checks
157 if (scalar (@srcfiles) == 0) {
158 print STDERR "util::mv no destination directory given\n";
159 return;
160 } elsif ((scalar (@srcfiles) > 1) && (!-d $dest)) {
161 print STDERR "util::mv if multiple source files are given the ".
162 "destination must be a directory\n";
163 return;
164 }
165
166 # move the files
167 foreach my $file (@srcfiles) {
168 my $tempdest = $dest;
169 if (-d $tempdest) {
170 my ($filename) = $file =~ /([^\\\/]+)$/;
171 $tempdest .= "/$filename";
172 }
173 if (!-e $file) {
174 print STDERR "util::mv $file does not exist\n";
175 } else {
176 if(!rename ($file, $tempdest)) {
177 print STDERR "**** Failed to rename $file to $tempdest\n";
178 &File::Copy::copy($file, $tempdest);
179 &rm($file);
180 }
181 elsif(-e $file) { # rename (partially) succeeded) but srcfile still exists after rename
182 #print STDERR "*** srcfile $file still exists after rename to $tempdest\n";
183 if(!-e $tempdest) {
184 print STDERR "@@@@ ERROR: $tempdest does not exist\n";
185 }
186 # Sometimes the rename operation fails (as does File::Copy::move).
187 # This turns out to be because the files are hardlinked.
188 # Need to do a copy-delete in this case, however, the copy step is not necessary:
189 # the srcfile got renamed into tempdest, but srcfile itself still exists, delete it.
190 #&File::Copy::copy($file, $tempdest);
191
192 &rm($file);
193 }
194 }
195 }
196}
197
198# Move the contents of source directory into target directory
199# (as opposed to merely replacing target dir with the src dir)
200# This can overwrite any files with duplicate names in the target
201# but other files and folders in the target will continue to exist
202sub mv_dir_contents {
203 my ($src_dir, $dest_dir) = @_;
204
205 # Obtain listing of all files within src_dir
206 # Note that readdir lists relative paths, as well as . and ..
207 opendir(DIR, "$src_dir");
208 my @files= readdir(DIR);
209 close(DIR);
210
211 my @full_path_files = ();
212 foreach my $file (@files) {
213 # process all except . and ..
214 unless($file eq "." || $file eq "..") {
215
216 my $dest_subdir = &filename_cat($dest_dir, $file); # $file is still a relative path
217
218 # construct absolute paths
219 $file = &filename_cat($src_dir, $file); # $file is now an absolute path
220
221 # Recurse on directories which have an equivalent in target dest_dir
222 # If $file is a directory that already exists in target $dest_dir,
223 # then a simple move operation will fail (definitely on Windows).
224 if(-d $file && -d $dest_subdir) {
225 #print STDERR "**** $file is a directory also existing in target, its contents to be copied to $dest_subdir\n";
226 &mv_dir_contents($file, $dest_subdir);
227
228 # now all content is moved across, delete empty dir in source folder
229 if(&is_dir_empty($file)) {
230 if (!rmdir $file) {
231 print STDERR "ERROR. util::mv_dir_contents couldn't remove directory $file\n";
232 }
233 } else { # error
234 print STDERR "ERROR. util::mv_dir_contents: subfolder $file still non-empty after moving contents to $dest_subdir\n";
235 }
236 } else { # process files and any directories that don't already exist with a simple move
237 push(@full_path_files, $file);
238 }
239 }
240 }
241
242 if(!&dir_exists($dest_dir)) { # create target toplevel folder or subfolders if they don't exist
243 &mk_dir($dest_dir);
244 }
245
246 #print STDERR "@@@@@ Copying files |".join(",", @full_path_files)."| to: $dest_dir\n";
247
248 if(@full_path_files) { # if non-empty, there's something to copy across
249 &mv(@full_path_files, $dest_dir);
250 }
251}
252
253
254# copies a file or a group of files
255sub cp {
256 my $dest = pop (@_);
257 my (@srcfiles) = @_;
258
259 # remove trailing slashes from source and destination files
260 $dest =~ s/[\\\/]+$//;
261 map {$_ =~ s/[\\\/]+$//;} @srcfiles;
262
263 # a few sanity checks
264 if (scalar (@srcfiles) == 0) {
265 print STDERR "util::cp no destination directory given\n";
266 return;
267 } elsif ((scalar (@srcfiles) > 1) && (!-d $dest)) {
268 print STDERR "util::cp if multiple source files are given the ".
269 "destination must be a directory\n";
270 return;
271 }
272
273 # copy the files
274 foreach my $file (@srcfiles) {
275 my $tempdest = $dest;
276 if (-d $tempdest) {
277 my ($filename) = $file =~ /([^\\\/]+)$/;
278 $tempdest .= "/$filename";
279 }
280 if (!-e $file) {
281 print STDERR "util::cp $file does not exist\n";
282 } elsif (!-f $file) {
283 print STDERR "util::cp $file is not a plain file\n";
284 } else {
285 &File::Copy::copy ($file, $tempdest);
286 }
287 }
288}
289
290
291
292# recursively copies a file or group of files
293# syntax: cp_r (sourcefiles, destination directory)
294# destination must be a directory - to copy one file to
295# another use cp instead
296sub cp_r {
297 my $dest = pop (@_);
298 my (@srcfiles) = @_;
299
300 # a few sanity checks
301 if (scalar (@srcfiles) == 0) {
302 print STDERR "util::cp_r no destination directory given\n";
303 return;
304 } elsif (-f $dest) {
305 print STDERR "util::cp_r destination must be a directory\n";
306 return;
307 }
308
309 # create destination directory if it doesn't exist already
310 if (! -d $dest) {
311 my $store_umask = umask(0002);
312 mkdir ($dest, 0777);
313 umask($store_umask);
314 }
315
316 # copy the files
317 foreach my $file (@srcfiles) {
318
319 if (!-e $file) {
320 print STDERR "util::cp_r $file does not exist\n";
321
322 } elsif (-d $file) {
323 # make the new directory
324 my ($filename) = $file =~ /([^\\\/]*)$/;
325 $dest = &util::filename_cat ($dest, $filename);
326 my $store_umask = umask(0002);
327 mkdir ($dest, 0777);
328 umask($store_umask);
329
330 # get the contents of this directory
331 if (!opendir (INDIR, $file)) {
332 print STDERR "util::cp_r could not open directory $file\n";
333 } else {
334 my @filedir = readdir (INDIR);
335 closedir (INDIR);
336 foreach my $f (@filedir) {
337 next if $f =~ /^\.\.?$/;
338 # copy all the files in this directory
339 my $ff = &util::filename_cat ($file, $f);
340 &cp_r ($ff, $dest);
341 }
342 }
343
344 } else {
345 &cp($file, $dest);
346 }
347 }
348}
349# recursively copies a file or group of files
350# syntax: cp_r (sourcefiles, destination directory)
351# destination must be a directory - to copy one file to
352# another use cp instead
353sub cp_r_nosvn {
354 my $dest = pop (@_);
355 my (@srcfiles) = @_;
356
357 # a few sanity checks
358 if (scalar (@srcfiles) == 0) {
359 print STDERR "util::cp_r no destination directory given\n";
360 return;
361 } elsif (-f $dest) {
362 print STDERR "util::cp_r destination must be a directory\n";
363 return;
364 }
365
366 # create destination directory if it doesn't exist already
367 if (! -d $dest) {
368 my $store_umask = umask(0002);
369 mkdir ($dest, 0777);
370 umask($store_umask);
371 }
372
373 # copy the files
374 foreach my $file (@srcfiles) {
375
376 if (!-e $file) {
377 print STDERR "util::cp_r $file does not exist\n";
378
379 } elsif (-d $file) {
380 # make the new directory
381 my ($filename) = $file =~ /([^\\\/]*)$/;
382 $dest = &util::filename_cat ($dest, $filename);
383 my $store_umask = umask(0002);
384 mkdir ($dest, 0777);
385 umask($store_umask);
386
387 # get the contents of this directory
388 if (!opendir (INDIR, $file)) {
389 print STDERR "util::cp_r could not open directory $file\n";
390 } else {
391 my @filedir = readdir (INDIR);
392 closedir (INDIR);
393 foreach my $f (@filedir) {
394 next if $f =~ /^\.\.?$/;
395 next if $f =~ /^\.svn$/;
396 # copy all the files in this directory
397 my $ff = &util::filename_cat ($file, $f);
398 &cp_r ($ff, $dest);
399 }
400 }
401
402 } else {
403 &cp($file, $dest);
404 }
405 }
406}
407
408# copies a directory and its contents, excluding subdirectories, into a new directory
409sub cp_r_toplevel {
410 my $dest = pop (@_);
411 my (@srcfiles) = @_;
412
413 # a few sanity checks
414 if (scalar (@srcfiles) == 0) {
415 print STDERR "util::cp_r no destination directory given\n";
416 return;
417 } elsif (-f $dest) {
418 print STDERR "util::cp_r destination must be a directory\n";
419 return;
420 }
421
422 # create destination directory if it doesn't exist already
423 if (! -d $dest) {
424 my $store_umask = umask(0002);
425 mkdir ($dest, 0777);
426 umask($store_umask);
427 }
428
429 # copy the files
430 foreach my $file (@srcfiles) {
431
432 if (!-e $file) {
433 print STDERR "util::cp_r $file does not exist\n";
434
435 } elsif (-d $file) {
436 # make the new directory
437 my ($filename) = $file =~ /([^\\\/]*)$/;
438 $dest = &util::filename_cat ($dest, $filename);
439 my $store_umask = umask(0002);
440 mkdir ($dest, 0777);
441 umask($store_umask);
442
443 # get the contents of this directory
444 if (!opendir (INDIR, $file)) {
445 print STDERR "util::cp_r could not open directory $file\n";
446 } else {
447 my @filedir = readdir (INDIR);
448 closedir (INDIR);
449 foreach my $f (@filedir) {
450 next if $f =~ /^\.\.?$/;
451
452 # copy all the files in this directory, but not directories
453 my $ff = &util::filename_cat ($file, $f);
454 if (-f $ff) {
455 &cp($ff, $dest);
456 #&cp_r ($ff, $dest);
457 }
458 }
459 }
460
461 } else {
462 &cp($file, $dest);
463 }
464 }
465}
466
467sub mk_dir {
468 my ($dir) = @_;
469
470 my $store_umask = umask(0002);
471 my $mkdir_ok = mkdir ($dir, 0777);
472 umask($store_umask);
473
474 if (!$mkdir_ok)
475 {
476 print STDERR "util::mk_dir could not create directory $dir\n";
477 return;
478 }
479}
480
481# in case anyone cares - I did some testing (using perls Benchmark module)
482# on this subroutine against File::Path::mkpath (). mk_all_dir() is apparently
483# slightly faster (surprisingly) - Stefan.
484sub mk_all_dir {
485 my ($dir) = @_;
486
487 # use / for the directory separator, remove duplicate and
488 # trailing slashes
489 $dir=~s/[\\\/]+/\//g;
490 $dir=~s/[\\\/]+$//;
491
492 # make sure the cache directory exists
493 my $dirsofar = "";
494 my $first = 1;
495 foreach my $dirname (split ("/", $dir)) {
496 $dirsofar .= "/" unless $first;
497 $first = 0;
498
499 $dirsofar .= $dirname;
500
501 next if $dirname =~ /^(|[a-z]:)$/i;
502 if (!-e $dirsofar)
503 {
504 my $store_umask = umask(0002);
505 my $mkdir_ok = mkdir ($dirsofar, 0777);
506 umask($store_umask);
507 if (!$mkdir_ok)
508 {
509 print STDERR "util::mk_all_dir could not create directory $dirsofar\n";
510 return;
511 }
512 }
513 }
514}
515
516# make hard link to file if supported by OS, otherwise copy the file
517sub hard_link {
518 my ($src, $dest, $verbosity) = @_;
519
520 # remove trailing slashes from source and destination files
521 $src =~ s/[\\\/]+$//;
522 $dest =~ s/[\\\/]+$//;
523
524## print STDERR "**** src = ", unicode::debug_unicode_string($src),"\n";
525 # a few sanity checks
526 if (-e $dest) {
527 # destination file already exists
528 return;
529 }
530 elsif (!-e $src) {
531 print STDERR "util::hard_link source file \"$src\" does not exist\n";
532 return 1;
533 }
534 elsif (-d $src) {
535 print STDERR "util::hard_link source \"$src\" is a directory\n";
536 return 1;
537 }
538
539 my $dest_dir = &File::Basename::dirname($dest);
540 mk_all_dir($dest_dir) if (!-e $dest_dir);
541
542
543 if (!link($src, $dest)) {
544 if ((!defined $verbosity) || ($verbosity>2)) {
545 print STDERR "util::hard_link: unable to create hard link. ";
546 print STDERR " Copying file: $src -> $dest\n";
547 }
548 &File::Copy::copy ($src, $dest);
549 }
550 return 0;
551}
552
553# make soft link to file if supported by OS, otherwise copy file
554sub soft_link {
555 my ($src, $dest, $ensure_paths_absolute) = @_;
556
557 # remove trailing slashes from source and destination files
558 $src =~ s/[\\\/]+$//;
559 $dest =~ s/[\\\/]+$//;
560
561 # Ensure file paths are absolute IF requested to do so
562 # Soft_linking didn't work for relative paths
563 if(defined $ensure_paths_absolute && $ensure_paths_absolute) {
564 # We need to ensure that the src file is the absolute path
565 # See http://perldoc.perl.org/File/Spec.html
566 if(!File::Spec->file_name_is_absolute( $src )) { # it's relative
567 $src = File::Spec->rel2abs($src); # make absolute
568 }
569 # Might as well ensure that the destination file's absolute path is used
570 if(!File::Spec->file_name_is_absolute( $dest )) {
571 $dest = File::Spec->rel2abs($dest); # make absolute
572 }
573 }
574
575 # a few sanity checks
576 if (!-e $src) {
577 print STDERR "util::soft_link source file $src does not exist\n";
578 return 0;
579 }
580
581 my $dest_dir = &File::Basename::dirname($dest);
582 mk_all_dir($dest_dir) if (!-e $dest_dir);
583
584 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
585
586 # symlink not supported on windows
587 &File::Copy::copy ($src, $dest);
588
589 } elsif (!eval {symlink($src, $dest)}) {
590 print STDERR "util::soft_link: unable to create soft link.\n";
591 return 0;
592 }
593
594 return 1;
595}
596
597# Primarily for filenames generated by processing
598# content of HTML files (which are mapped to UTF-8 internally)
599#
600# To turn this into an octet string that really exists on the file
601# system:
602# 1. don't need to do anything special for Unix-based systems
603# (as underlying file system is byte-code)
604# 2. need to map to short DOS filenames for Windows
605
606sub utf8_to_real_filename
607{
608 my ($utf8_filename) = @_;
609
610 my $real_filename;
611
612 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
613 require Win32;
614
615 print STDERR "***** utf8 filename = $utf8_filename\n\n\n";
616
617 my $unicode_filename = decode("utf8",$utf8_filename);
618 $real_filename = Win32::GetShortPathName($unicode_filename);
619 }
620 else {
621 $real_filename = $utf8_filename;
622 }
623
624 return $real_filename;
625}
626
627
628sub fd_exists
629{
630 my $filename_full_path = shift @_;
631 my $test_op = shift @_ || "-e";
632
633 # By default tests for existance of file or directory (-e)
634 # Can be made more specific by providing second parameter (e.g. -f or -d)
635
636 my $exists = 0;
637
638 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
639 require Win32;
640 my $filename_short_path = Win32::GetShortPathName($filename_full_path);
641 if (!defined $filename_short_path) {
642 # Was probably still in UTF8 form (not what is needed on Windows)
643 my $unicode_filename_full_path = eval "decode(\"utf8\",\$filename_full_path)";
644 if (defined $unicode_filename_full_path) {
645 $filename_short_path = Win32::GetShortPathName($unicode_filename_full_path);
646 }
647 }
648 $filename_full_path = $filename_short_path;
649 }
650
651 if (defined $filename_full_path) {
652 $exists = eval "($test_op \$filename_full_path)";
653 }
654
655 return $exists;
656}
657
658sub file_exists
659{
660 my ($filename_full_path) = @_;
661
662 return fd_exists($filename_full_path,"-f");
663}
664
665sub dir_exists
666{
667 my ($filename_full_path) = @_;
668
669 return fd_exists($filename_full_path,"-d");
670}
671
672
673
674# updates a copy of a directory in some other part of the filesystem
675# verbosity settings are: 0=low, 1=normal, 2=high
676# both $fromdir and $todir should be absolute paths
677sub cachedir {
678 my ($fromdir, $todir, $verbosity) = @_;
679 $verbosity = 1 unless defined $verbosity;
680
681 # use / for the directory separator, remove duplicate and
682 # trailing slashes
683 $fromdir=~s/[\\\/]+/\//g;
684 $fromdir=~s/[\\\/]+$//;
685 $todir=~s/[\\\/]+/\//g;
686 $todir=~s/[\\\/]+$//;
687
688 &mk_all_dir ($todir);
689
690 # get the directories in ascending order
691 if (!opendir (FROMDIR, $fromdir)) {
692 print STDERR "util::cachedir could not read directory $fromdir\n";
693 return;
694 }
695 my @fromdir = grep (!/^\.\.?$/, sort(readdir (FROMDIR)));
696 closedir (FROMDIR);
697
698 if (!opendir (TODIR, $todir)) {
699 print STDERR "util::cacedir could not read directory $todir\n";
700 return;
701 }
702 my @todir = grep (!/^\.\.?$/, sort(readdir (TODIR)));
703 closedir (TODIR);
704
705 my $fromi = 0;
706 my $toi = 0;
707
708 while ($fromi < scalar(@fromdir) || $toi < scalar(@todir)) {
709# print "fromi: $fromi toi: $toi\n";
710
711 # see if we should delete a file/directory
712 # this should happen if the file/directory
713 # is not in the from list or if its a different
714 # size, or has an older timestamp
715 if ($toi < scalar(@todir)) {
716 if (($fromi >= scalar(@fromdir)) ||
717 ($todir[$toi] lt $fromdir[$fromi] ||
718 ($todir[$toi] eq $fromdir[$fromi] &&
719 &differentfiles("$fromdir/$fromdir[$fromi]","$todir/$todir[$toi]",
720 $verbosity)))) {
721
722 # the files are different
723 &rm_r("$todir/$todir[$toi]");
724 splice(@todir, $toi, 1); # $toi stays the same
725
726 } elsif ($todir[$toi] eq $fromdir[$fromi]) {
727 # the files are the same
728 # if it is a directory, check its contents
729 if (-d "$todir/$todir[$toi]") {
730 &cachedir ("$fromdir/$fromdir[$fromi]",
731 "$todir/$todir[$toi]", $verbosity);
732 }
733
734 $toi++;
735 $fromi++;
736 next;
737 }
738 }
739
740 # see if we should insert a file/directory
741 # we should insert a file/directory if there
742 # is no tofiles left or if the tofile does not exist
743 if ($fromi < scalar(@fromdir) && ($toi >= scalar(@todir) ||
744 $todir[$toi] gt $fromdir[$fromi])) {
745 &cp_r ("$fromdir/$fromdir[$fromi]", "$todir/$fromdir[$fromi]");
746 splice (@todir, $toi, 0, $fromdir[$fromi]);
747
748 $toi++;
749 $fromi++;
750 }
751 }
752}
753
754# this function returns -1 if either file is not found
755# assumes that $file1 and $file2 are absolute file names or
756# in the current directory
757# $file2 is allowed to be newer than $file1
758sub differentfiles {
759 my ($file1, $file2, $verbosity) = @_;
760 $verbosity = 1 unless defined $verbosity;
761
762 $file1 =~ s/\/+$//;
763 $file2 =~ s/\/+$//;
764
765 my ($file1name) = $file1 =~ /\/([^\/]*)$/;
766 my ($file2name) = $file2 =~ /\/([^\/]*)$/;
767
768 return -1 unless (-e $file1 && -e $file2);
769 if ($file1name ne $file2name) {
770 print STDERR "filenames are not the same\n" if ($verbosity >= 2);
771 return 1;
772 }
773
774 my @file1stat = stat ($file1);
775 my @file2stat = stat ($file2);
776
777 if (-d $file1) {
778 if (! -d $file2) {
779 print STDERR "one file is a directory\n" if ($verbosity >= 2);
780 return 1;
781 }
782 return 0;
783 }
784
785 # both must be regular files
786 unless (-f $file1 && -f $file2) {
787 print STDERR "one file is not a regular file\n" if ($verbosity >= 2);
788 return 1;
789 }
790
791 # the size of the files must be the same
792 if ($file1stat[7] != $file2stat[7]) {
793 print STDERR "different sized files\n" if ($verbosity >= 2);
794 return 1;
795 }
796
797 # the second file cannot be older than the first
798 if ($file1stat[9] > $file2stat[9]) {
799 print STDERR "file is older\n" if ($verbosity >= 2);
800 return 1;
801 }
802
803 return 0;
804}
805
806
807sub get_tmp_filename
808{
809 my $file_ext = shift(@_) || undef;
810
811 my $opt_dot_file_ext = "";
812 if (defined $file_ext) {
813 if ($file_ext !~ m/\./) {
814 # no dot, so needs one added in at start
815 $opt_dot_file_ext = ".$file_ext"
816 }
817 else {
818 # allow for "extensions" such as _metadata.txt to be handled
819 # gracefully
820 $opt_dot_file_ext = $file_ext;
821 }
822 }
823
824 my $tmpdir = filename_cat($ENV{'GSDLHOME'}, "tmp");
825 &mk_all_dir ($tmpdir) unless -e $tmpdir;
826
827 my $count = 1000;
828 my $rand = int(rand $count);
829 my $full_tmp_filename = &filename_cat($tmpdir, "F$rand$opt_dot_file_ext");
830
831 while (-e $full_tmp_filename) {
832 $rand = int(rand $count);
833 $full_tmp_filename = &filename_cat($tmpdir, "F$rand$opt_dot_file_ext");
834 $count++;
835 }
836
837 return $full_tmp_filename;
838}
839
840sub get_timestamped_tmp_folder
841{
842
843 my $tmp_dirname;
844 if(defined $ENV{'GSDLCOLLECTDIR'}) {
845 $tmp_dirname = $ENV{'GSDLCOLLECTDIR'};
846 } elsif(defined $ENV{'GSDLHOME'}) {
847 $tmp_dirname = $ENV{'GSDLHOME'};
848 } else {
849 return undef;
850 }
851
852 $tmp_dirname = &util::filename_cat($tmp_dirname, "tmp");
853 &util::mk_dir($tmp_dirname) if (!-e $tmp_dirname);
854
855 # add the timestamp into the path otherwise we can run into problems
856 # if documents have the same name
857 my $timestamp = time;
858 my $time_tmp_dirname = &util::filename_cat($tmp_dirname, $timestamp);
859 $tmp_dirname = $time_tmp_dirname;
860 my $i = 1;
861 while (-e $tmp_dirname) {
862 $tmp_dirname = "$time_tmp_dirname$i";
863 $i++;
864 }
865 &util::mk_dir($tmp_dirname);
866
867 return $tmp_dirname;
868}
869
870sub get_timestamped_tmp_filename_in_collection
871{
872
873 my ($input_filename, $output_ext) = @_;
874 # derive tmp filename from input filename
875 my ($tailname, $dirname, $suffix)
876 = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
877
878 # softlink to collection tmp dir
879 my $tmp_dirname = &util::get_timestamped_tmp_folder();
880 $tmp_dirname = $dirname unless defined $tmp_dirname;
881
882 # following two steps copied from ConvertBinaryFile
883 # do we need them?? can't use them as is, as they use plugin methods.
884
885 #$tailname = $self->SUPER::filepath_to_utf8($tailname) unless &unicode::check_is_utf8($tailname);
886
887 # URLEncode this since htmls with images where the html filename is utf8 don't seem
888 # to work on Windows (IE or Firefox), as browsers are looking for filesystem-encoded
889 # files on the filesystem.
890 #$tailname = &util::rename_file($tailname, $self->{'file_rename_method'}, "without_suffix");
891 if (defined $output_ext) {
892 $output_ext = ".$output_ext"; # add the dot
893 } else {
894 $output_ext = $suffix;
895 }
896 $output_ext= lc($output_ext);
897 my $tmp_filename = &util::filename_cat($tmp_dirname, "$tailname$output_ext");
898
899 return $tmp_filename;
900}
901
902sub get_toplevel_tmp_dir
903{
904 return filename_cat($ENV{'GSDLHOME'}, "tmp");
905}
906
907
908sub filename_to_regex {
909 my $filename = shift (@_);
910
911 # need to make single backslashes double so that regex works
912 $filename =~ s/\\/\\\\/g; # if ($ENV{'GSDLOS'} =~ /^windows$/i);
913
914 # note that the first part of a substitution is a regex, so RE chars need to be escaped,
915 # the second part of a substitution is not a regex, so for e.g. full-stop can be specified literally
916 $filename =~ s/\./\\./g; # in case there are extensions/other full stops, escape them
917 $filename =~ s@\(@\\(@g; # escape brackets
918 $filename =~ s@\)@\\)@g; # escape brackets
919 $filename =~ s@\[@\\[@g; # escape brackets
920 $filename =~ s@\]@\\]@g; # escape brackets
921
922 return $filename;
923}
924
925sub unregex_filename {
926 my $filename = shift (@_);
927
928 # need to put doubled backslashes for regex back to single
929 $filename =~ s/\\\./\./g; # remove RE syntax for .
930 $filename =~ s@\\\(@(@g; # remove RE syntax for ( => "\(" turns into "("
931 $filename =~ s@\\\)@)@g; # remove RE syntax for ) => "\)" turns into ")"
932 $filename =~ s@\\\[@[@g; # remove RE syntax for [ => "\[" turns into "["
933 $filename =~ s@\\\]@]@g; # remove RE syntax for ] => "\]" turns into "]"
934
935 # \\ goes to \
936 # This is the last step in reverse mirroring the order of steps in filename_to_regex()
937 $filename =~ s/\\\\/\\/g; # remove RE syntax for \
938 return $filename;
939}
940
941sub filename_cat {
942 my $first_file = shift(@_);
943 my (@filenames) = @_;
944
945# Useful for debugging
946# -- might make sense to call caller(0) rather than (1)??
947# my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(1);
948# print STDERR "Calling method: $cfilename:$cline $cpackage->$csubr\n";
949
950 # If first_file is not null or empty, then add it back into the list
951 if (defined $first_file && $first_file =~ /\S/) {
952 unshift(@filenames, $first_file);
953 }
954
955 my $filename = join("/", @filenames);
956
957 # remove duplicate slashes and remove the last slash
958 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
959 $filename =~ s/[\\\/]+/\\/g;
960 } else {
961 $filename =~ s/[\/]+/\//g;
962 # DB: want a filename abc\de.html to remain like this
963 }
964 $filename =~ s/[\\\/]$//;
965
966 return $filename;
967}
968
969
970sub pathname_cat {
971 my $first_path = shift(@_);
972 my (@pathnames) = @_;
973
974 # If first_path is not null or empty, then add it back into the list
975 if (defined $first_path && $first_path =~ /\S/) {
976 unshift(@pathnames, $first_path);
977 }
978
979 my $join_char;
980 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
981 $join_char = ";";
982 } else {
983 $join_char = ":";
984 }
985
986 my $pathname = join($join_char, @pathnames);
987
988 # remove duplicate slashes
989 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
990 $pathname =~ s/[\\\/]+/\\/g;
991 } else {
992 $pathname =~ s/[\/]+/\//g;
993 # DB: want a pathname abc\de.html to remain like this
994 }
995
996 return $pathname;
997}
998
999
1000sub tidy_up_oid {
1001 my ($OID) = @_;
1002 if ($OID =~ /\./) {
1003 print STDERR "Warning, identifier $OID contains periods (.), removing them\n";
1004 $OID =~ s/\.//g; #remove any periods
1005 }
1006 if ($OID =~ /^\s.*\s$/) {
1007 print STDERR "Warning, identifier $OID starts or ends with whitespace. Removing it\n";
1008 # remove starting and trailing whitespace
1009 $OID =~ s/^\s+//;
1010 $OID =~ s/\s+$//;
1011 }
1012 if ($OID =~ /^[\d]*$/) {
1013 print STDERR "Warning, identifier $OID contains only digits. Prepending 'D'.\n";
1014 $OID = "D" . $OID;
1015 }
1016
1017 return $OID;
1018}
1019
1020sub envvar_prepend {
1021 my ($var,$val) = @_;
1022
1023 # 64 bit linux can't handle ";" as path separator, so make sure to set this to the right one for the OS
1024 my $pathsep = (defined $ENV{'GSDLOS'} && $ENV{'GSDLOS'} !~ m/windows/) ? ":" : ";";
1025
1026 # do not prepend any value/path that's already in the environment variable
1027
1028 my $escaped_val = &filename_to_regex($val); # escape any backslashes and brackets for upcoming regex
1029 if (!defined($ENV{$var})) {
1030 $ENV{$var} = "$val";
1031 }
1032 elsif($ENV{$var} !~ m/$escaped_val/) {
1033 $ENV{$var} = "$val".$pathsep.$ENV{$var};
1034 }
1035}
1036
1037sub envvar_append {
1038 my ($var,$val) = @_;
1039
1040 # 64 bit linux can't handle ";" as path separator, so make sure to set this to the right one for the OS
1041 my $pathsep = (defined $ENV{'GSDLOS'} && $ENV{'GSDLOS'} !~ m/windows/) ? ":" : ";";
1042
1043 # do not append any value/path that's already in the environment variable
1044
1045 my $escaped_val = &filename_to_regex($val); # escape any backslashes and brackets for upcoming regex
1046 if (!defined($ENV{$var})) {
1047 $ENV{$var} = "$val";
1048 }
1049 elsif($ENV{$var} !~ m/$escaped_val/) {
1050 $ENV{$var} = $ENV{$var}.$pathsep."$val";
1051 }
1052}
1053
1054
1055# splits a filename into a prefix and a tail extension using the tail_re, or
1056# if that fails, splits on the file_extension . (dot)
1057sub get_prefix_and_tail_by_regex {
1058
1059 my ($filename,$tail_re) = @_;
1060
1061 my ($file_prefix,$file_ext) = ($filename =~ m/^(.*?)($tail_re)$/);
1062 if ((!defined $file_prefix) || (!defined $file_ext)) {
1063 ($file_prefix,$file_ext) = ($filename =~ m/^(.*)(\..*?)$/);
1064 }
1065
1066 return ($file_prefix,$file_ext);
1067}
1068
1069# get full path and file only path from a base_dir (which may be empty) and
1070# file (which may contain directories)
1071sub get_full_filenames {
1072 my ($base_dir, $file) = @_;
1073
1074 my $filename_full_path = $file;
1075 # add on directory if present
1076 $filename_full_path = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\S/;
1077
1078 my $filename_no_path = $file;
1079
1080 # remove directory if present
1081 $filename_no_path =~ s/^.*[\/\\]//;
1082 return ($filename_full_path, $filename_no_path);
1083}
1084
1085# returns the path of a file without the filename -- ie. the directory the file is in
1086sub filename_head {
1087 my $filename = shift(@_);
1088
1089 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1090 $filename =~ s/[^\\\\]*$//;
1091 }
1092 else {
1093 $filename =~ s/[^\\\/]*$//;
1094 }
1095
1096 return $filename;
1097}
1098
1099
1100
1101# returns 1 if filename1 and filename2 point to the same
1102# file or directory
1103sub filenames_equal {
1104 my ($filename1, $filename2) = @_;
1105
1106 # use filename_cat to clean up trailing slashes and
1107 # multiple slashes
1108 $filename1 = filename_cat ($filename1);
1109 $filename2 = filename_cat ($filename2);
1110
1111 # filenames not case sensitive on windows
1112 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1113 $filename1 =~ tr/[A-Z]/[a-z]/;
1114 $filename2 =~ tr/[A-Z]/[a-z]/;
1115 }
1116 return 1 if $filename1 eq $filename2;
1117 return 0;
1118}
1119
1120# If filename is relative to within_dir, returns the relative path of filename to that directory
1121# with slashes in the filename returned as they were in the original (absolute) filename.
1122sub filename_within_directory
1123{
1124 my ($filename,$within_dir) = @_;
1125
1126 if ($within_dir !~ m/[\/\\]$/) {
1127 my $dirsep = &util::get_dirsep();
1128 $within_dir .= $dirsep;
1129 }
1130
1131 $within_dir = &filename_to_regex($within_dir); # escape DOS style file separator and brackets
1132 if ($filename =~ m/^$within_dir(.*)$/) {
1133 $filename = $1;
1134 }
1135
1136 return $filename;
1137}
1138
1139# If filename is relative to within_dir, returns the relative path of filename to that directory in URL format.
1140# Filename and within_dir can be any type of slashes, but will be compared as URLs (i.e. unix-style slashes).
1141# The subpath returned will also be a URL type filename.
1142sub filename_within_directory_url_format
1143{
1144 my ($filename,$within_dir) = @_;
1145
1146 # convert parameters only to / slashes if Windows
1147
1148 my $filename_urlformat = &filepath_to_url_format($filename);
1149 my $within_dir_urlformat = &filepath_to_url_format($within_dir);
1150
1151 #if ($within_dir_urlformat !~ m/\/$/) {
1152 # make sure directory ends with a slash
1153 #$within_dir_urlformat .= "/";
1154 #}
1155
1156 my $within_dir_urlformat_re = &filename_to_regex($within_dir_urlformat); # escape any special RE characters, such as brackets
1157
1158 #print STDERR "@@@@@ $filename_urlformat =~ $within_dir_urlformat_re\n";
1159
1160 # dir prefix may or may not end with a slash (this is discarded when extracting the sub-filepath)
1161 if ($filename_urlformat =~ m/^$within_dir_urlformat_re(?:\/)*(.*)$/) {
1162 $filename_urlformat = $1;
1163 }
1164
1165 return $filename_urlformat;
1166}
1167
1168# Convert parameter to use / slashes if Windows (if on Linux leave any \ as is,
1169# since on Linux it doesn't represent a file separator but an escape char).
1170sub filepath_to_url_format
1171{
1172 my ($filepath) = @_;
1173 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1174 # Only need to worry about Windows, as Unix style directories already in url-format
1175 # Convert Windows style \ => /
1176 $filepath =~ s@\\@/@g;
1177 }
1178 return $filepath;
1179}
1180
1181# regex filepaths on windows may include \\ as path separator. Convert \\ to /
1182sub filepath_regex_to_url_format
1183{
1184 my ($filepath) = @_;
1185 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1186 # Only need to worry about Windows, as Unix style directories already in url-format
1187 # Convert Windows style \\ => /
1188 $filepath =~ s@\\\\@/@g;
1189 }
1190 return $filepath;
1191
1192}
1193
1194# Like File::Basename::fileparse, but expects filepath in url format (ie only / slash for dirsep)
1195# and ignores trailing /
1196# returns (file, dirs) dirs will be empty if no subdirs
1197sub url_fileparse
1198{
1199 my ($filepath) = @_;
1200 # remove trailing /
1201 $filepath =~ s@/$@@;
1202 if ($filepath !~ m@/@) {
1203 return ($filepath, "");
1204 }
1205 my ($dirs, $file) = $filepath =~ m@(.+/)([^/]+)@;
1206 return ($file, $dirs);
1207
1208}
1209
1210
1211sub filename_within_collection
1212{
1213 my ($filename) = @_;
1214
1215 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
1216
1217 if (defined $collect_dir) {
1218
1219 # if from within GSDLCOLLECTDIR, then remove directory prefix
1220 # so source_filename is realative to it. This is done to aid
1221 # portability, i.e. the collection can be moved to somewhere
1222 # else on the file system and the archives directory will still
1223 # work. This is needed, for example in the applet version of
1224 # GLI where GSDLHOME/collect on the server will be different to
1225 # the collect directory of the remove user. Of course,
1226 # GSDLCOLLECTDIR subsequently needs to be put back on to turn
1227 # it back into a full pathname.
1228
1229 $filename = filename_within_directory($filename,$collect_dir);
1230 }
1231
1232 return $filename;
1233}
1234
1235sub prettyprint_file
1236{
1237 my ($base_dir,$file,$gli) = @_;
1238
1239 my $filename_full_path = &util::filename_cat($base_dir,$file);
1240
1241 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
1242 require Win32;
1243
1244 # For some reason base_dir in the form c:/a/b/c
1245 # This leads to confusion later on, so turn it back into
1246 # the more usual Windows form
1247 $base_dir =~ s/\//\\/g;
1248 my $long_base_dir = Win32::GetLongPathName($base_dir);
1249 my $long_full_path = Win32::GetLongPathName($filename_full_path);
1250
1251 $file = filename_within_directory($long_full_path,$long_base_dir);
1252 $file = encode("utf8",$file) if ($gli);
1253 }
1254
1255 return $file;
1256}
1257
1258
1259sub upgrade_if_dos_filename
1260{
1261 my ($filename_full_path,$and_encode) = @_;
1262
1263 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
1264 # Ensure any DOS-like filename, such as test~1.txt, has been upgraded
1265 # to its long (Windows) version
1266 my $long_filename = Win32::GetLongPathName($filename_full_path);
1267 if (defined $long_filename) {
1268 $filename_full_path = $long_filename;
1269 }
1270 # Make sure initial drive letter is lower-case (to fit in with rest of Greenstone)
1271 $filename_full_path =~ s/^(.):/\u$1:/;
1272 if ((defined $and_encode) && ($and_encode)) {
1273 $filename_full_path = encode("utf8",$filename_full_path);
1274 }
1275 }
1276
1277 return $filename_full_path;
1278}
1279
1280
1281sub downgrade_if_dos_filename
1282{
1283 my ($filename_full_path) = @_;
1284
1285 if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
1286 require Win32;
1287
1288 # Ensure the given long Windows filename is in a form that can
1289 # be opened by Perl => convert it to a short DOS-like filename
1290
1291 my $short_filename = Win32::GetShortPathName($filename_full_path);
1292 if (defined $short_filename) {
1293 $filename_full_path = $short_filename;
1294 }
1295 # Make sure initial drive letter is lower-case (to fit in
1296 # with rest of Greenstone)
1297 $filename_full_path =~ s/^(.):/\u$1:/;
1298 }
1299
1300 return $filename_full_path;
1301}
1302
1303sub block_filename
1304{
1305 my ($block_hash,$filename) = @_;
1306
1307 if ($ENV{'GSDLOS'} =~ m/^windows$/) {
1308
1309 # lower case the entire thing, eg for cover.jpg when its actually cover.JPG
1310 my $lower_filename = lc($filename);
1311 $block_hash->{'file_blocks'}->{$lower_filename} = 1;
1312# my $lower_drive = $filename;
1313# $lower_drive =~ s/^([A-Z]):/\l$1:/i;
1314
1315# my $upper_drive = $filename;
1316# $upper_drive =~ s/^([A-Z]):/\u$1:/i;
1317#
1318# $block_hash->{'file_blocks'}->{$lower_drive} = 1;
1319# $block_hash->{'file_blocks'}->{$upper_drive} = 1;
1320 }
1321 else {
1322 $block_hash->{'file_blocks'}->{$filename} = 1;
1323 }
1324}
1325
1326
1327sub filename_is_absolute
1328{
1329 my ($filename) = @_;
1330
1331 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1332 return ($filename =~ m/^(\w:)?\\/);
1333 }
1334 else {
1335 return ($filename =~ m/^\//);
1336 }
1337}
1338
1339
1340## @method make_absolute()
1341#
1342# Ensure the given file path is absolute in respect to the given base path.
1343#
1344# @param $base_dir A string denoting the base path the given dir must be
1345# absolute to.
1346# @param $dir The directory to be made absolute as a string. Note that the
1347# dir may already be absolute, in which case it will remain
1348# unchanged.
1349# @return The now absolute form of the directory as a string.
1350#
1351# @author John Thompson, DL Consulting Ltd.
1352# @copy 2006 DL Consulting Ltd.
1353#
1354#used in buildcol.pl, doesn't work for all cases --kjdon
1355sub make_absolute {
1356
1357 my ($base_dir, $dir) = @_;
1358### print STDERR "dir = $dir\n";
1359 $dir =~ s/[\\\/]+/\//g;
1360 $dir = $base_dir . "/$dir" unless ($dir =~ m|^(\w:)?/|);
1361 $dir =~ s|^/tmp_mnt||;
1362 1 while($dir =~ s|/[^/]*/\.\./|/|g);
1363 $dir =~ s|/[.][.]?/|/|g;
1364 $dir =~ tr|/|/|s;
1365### print STDERR "dir = $dir\n";
1366
1367 return $dir;
1368}
1369## make_absolute() ##
1370
1371sub get_dirsep {
1372
1373 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1374 return "\\";
1375 } else {
1376 return "\/";
1377 }
1378}
1379
1380sub get_os_dirsep {
1381
1382 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
1383 return "\\\\";
1384 } else {
1385 return "\\\/";
1386 }
1387}
1388
1389sub get_re_dirsep {
1390
1391 return "\\\\|\\\/";
1392}
1393
1394
1395sub get_dirsep_tail {
1396 my ($filename) = @_;
1397
1398 # returns last part of directory or filename
1399 # On unix e.g. a/b.d => b.d
1400 # a/b/c => c
1401
1402 my $dirsep = get_re_dirsep();
1403 my @dirs = split (/$dirsep/, $filename);
1404 my $tail = pop @dirs;
1405
1406 # - caused problems under windows
1407 #my ($tail) = ($filename =~ m/^(?:.*?$dirsep)?(.*?)$/);
1408
1409 return $tail;
1410}
1411
1412
1413# if this is running on windows we want binaries to end in
1414# .exe, otherwise they don't have to end in any extension
1415sub get_os_exe {
1416 return ".exe" if $ENV{'GSDLOS'} =~ /^windows$/i;
1417 return "";
1418}
1419
1420
1421# test to see whether this is a big or little endian machine
1422sub is_little_endian
1423{
1424 # To determine the name of the operating system, the variable $^O is a cheap alternative to pulling it out of the Config module;
1425 # 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
1426 # Otherwise, it's little endian
1427
1428 #return 0 if $^O =~ /^darwin$/i;
1429 #return 0 if $ENV{'GSDLOS'} =~ /^darwin$/i;
1430
1431 # Going back to stating exactly whether the machine is little endian
1432 # or big endian, without any special case for Macs. Since for rata it comes
1433 # back with little endian and for shuttle with bigendian.
1434 return (ord(substr(pack("s",1), 0, 1)) == 1);
1435}
1436
1437
1438# will return the collection name if successful, "" otherwise
1439sub use_collection {
1440 my ($collection, $collectdir) = @_;
1441
1442 if (!defined $collectdir || $collectdir eq "") {
1443 $collectdir = &filename_cat ($ENV{'GSDLHOME'}, "collect");
1444 }
1445
1446 # get and check the collection
1447 if (!defined($collection) || $collection eq "") {
1448 if (defined $ENV{'GSDLCOLLECTION'}) {
1449 $collection = $ENV{'GSDLCOLLECTION'};
1450 } else {
1451 print STDOUT "No collection specified\n";
1452 return "";
1453 }
1454 }
1455
1456 if ($collection eq "modelcol") {
1457 print STDOUT "You can't use modelcol.\n";
1458 return "";
1459 }
1460
1461 # make sure the environment variables GSDLCOLLECTION and GSDLCOLLECTDIR
1462 # are defined
1463 $ENV{'GSDLCOLLECTION'} = $collection;
1464 $ENV{'GSDLCOLLECTDIR'} = &filename_cat ($collectdir, $collection);
1465
1466 # make sure this collection exists
1467 if (!-e $ENV{'GSDLCOLLECTDIR'}) {
1468 print STDOUT "Invalid collection ($collection).\n";
1469 return "";
1470 }
1471
1472 # everything is ready to go
1473 return $collection;
1474}
1475
1476sub get_current_collection_name {
1477 return $ENV{'GSDLCOLLECTION'};
1478}
1479
1480
1481# will return the collection name if successful, "" otherwise.
1482# Like use_collection (above) but for greenstone 3 (taking account of site level)
1483
1484sub use_site_collection {
1485 my ($site, $collection, $collectdir) = @_;
1486
1487 if (!defined $collectdir || $collectdir eq "") {
1488 die "GSDL3HOME not set.\n" unless defined $ENV{'GSDL3HOME'};
1489 $collectdir = &filename_cat ($ENV{'GSDL3HOME'}, "sites", $site, "collect");
1490 }
1491
1492 # collectdir explicitly set by this point (using $site variable if required).
1493 # Can call "old" gsdl2 use_collection now.
1494
1495 return use_collection($collection,$collectdir);
1496}
1497
1498
1499
1500sub locate_config_file
1501{
1502 my ($file) = @_;
1503
1504 my $locations = locate_config_files($file);
1505
1506 return shift @$locations; # returns undef if 'locations' is empty
1507}
1508
1509
1510sub locate_config_files
1511{
1512 my ($file) = @_;
1513
1514 my @locations = ();
1515
1516 if (-e $file) {
1517 # Clearly specified (most likely full filename)
1518 # No need to hunt in 'etc' directories, return value unchanged
1519 push(@locations,$file);
1520 }
1521 else {
1522 # Check for collection specific one before looking in global GSDL 'etc'
1523 if (defined $ENV{'GSDLCOLLECTDIR'} && $ENV{'GSDLCOLLECTDIR'} ne "") {
1524 my $test_collect_etc_filename
1525 = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},"etc", $file);
1526
1527 if (-e $test_collect_etc_filename) {
1528 push(@locations,$test_collect_etc_filename);
1529 }
1530 }
1531 my $test_main_etc_filename
1532 = &util::filename_cat($ENV{'GSDLHOME'},"etc", $file);
1533 if (-e $test_main_etc_filename) {
1534 push(@locations,$test_main_etc_filename);
1535 }
1536 }
1537
1538 return \@locations;
1539}
1540
1541
1542sub hyperlink_text
1543{
1544 my ($text) = @_;
1545
1546 $text =~ s/(http:\/\/[^\s]+)/<a href=\"$1\">$1<\/a>/mg;
1547 $text =~ s/(^|\s+)(www\.(\w|\.)+)/<a href=\"http:\/\/$2\">$2<\/a>/mg;
1548
1549 return $text;
1550}
1551
1552
1553# A method to check if a directory is empty (note that an empty directory still has non-zero size!!!)
1554# Code is from http://episteme.arstechnica.com/eve/forums/a/tpc/f/6330927813/m/436007700831
1555sub is_dir_empty
1556{
1557 my ($path) = @_;
1558 opendir DIR, $path;
1559 while(my $entry = readdir DIR) {
1560 next if($entry =~ /^\.\.?$/);
1561 closedir DIR;
1562 return 0;
1563 }
1564 closedir DIR;
1565 return 1;
1566}
1567
1568# Returns the given filename converted using either URL encoding or base64
1569# encoding, as specified by $rename_method. If the given filename has no suffix
1570# (if it is just the tailname), then $no_suffix should be some defined value.
1571# rename_method can be url, none, base64
1572sub rename_file {
1573 my ($filename, $rename_method, $no_suffix) = @_;
1574
1575 if(!$filename) { # undefined or empty string
1576 return $filename;
1577 }
1578
1579 if (!$rename_method) {
1580 print STDERR "WARNING: no file renaming method specified. Defaulting to using URL encoding...\n";
1581 # Debugging information
1582 # my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(1);
1583 # print STDERR "Called from method: $cfilename:$cline $cpackage->$csubr\n";
1584 $rename_method = "url";
1585 } elsif($rename_method eq "none") {
1586 return $filename; # would have already been renamed
1587 }
1588
1589 # No longer replace spaces with underscores, since underscores mess with incremental rebuild
1590 ### Replace spaces with underscore. Do this first else it can go wrong below when getting tailname
1591 ###$filename =~ s/ /_/g;
1592
1593 my ($tailname,$dirname,$suffix);
1594 if($no_suffix) { # given a tailname, no suffix
1595 ($tailname,$dirname) = File::Basename::fileparse($filename);
1596 }
1597 else {
1598 ($tailname,$dirname,$suffix) = File::Basename::fileparse($filename, "\\.(?:[^\\.]+?)\$");
1599 }
1600 if (!$suffix) {
1601 $suffix = "";
1602 }
1603 # This breaks GLI matching extracted metadata to files in Enrich panel, as
1604 # original is eg .JPG while gsdlsourcefilename ends up .jpg
1605 # Not sure why it was done in first place...
1606 #else {
1607 #$suffix = lc($suffix);
1608 #}
1609
1610 if ($rename_method eq "url") {
1611 $tailname = &unicode::url_encode($tailname);
1612 }
1613 elsif ($rename_method eq "base64") {
1614 $tailname = &unicode::base64_encode($tailname);
1615 $tailname =~ s/\s*//sg; # for some reason it adds spaces not just at end but also in middle
1616 }
1617
1618 $filename = "$tailname$suffix";
1619 $filename = "$dirname$filename" if ($dirname ne "./" && $dirname ne ".\\");
1620
1621 return $filename;
1622}
1623
1624
1625# BACKWARDS COMPATIBILITY: Just in case there are old .ldb/.bdb files
1626sub rename_ldb_or_bdb_file {
1627 my ($filename_no_ext) = @_;
1628
1629 my $new_filename = "$filename_no_ext.gdb";
1630 return if (-f $new_filename); # if the file has the right extension, don't need to do anything
1631 # try ldb
1632 my $old_filename = "$filename_no_ext.ldb";
1633
1634 if (-f $old_filename) {
1635 print STDERR "Renaming $old_filename to $new_filename\n";
1636 rename ($old_filename, $new_filename)
1637 || print STDERR "Rename failed: $!\n";
1638 return;
1639 }
1640 # try bdb
1641 $old_filename = "$filename_no_ext.bdb";
1642 if (-f $old_filename) {
1643 print STDERR "Renaming $old_filename to $new_filename\n";
1644 rename ($old_filename, $new_filename)
1645 || print STDERR "Rename failed: $!\n";
1646 return;
1647 }
1648}
1649
1650sub os_dir() {
1651
1652 my $gsdlarch = "";
1653 if(defined $ENV{'GSDLARCH'}) {
1654 $gsdlarch = $ENV{'GSDLARCH'};
1655 }
1656 return $ENV{'GSDLOS'}.$gsdlarch;
1657}
1658
1659# Returns the greenstone URL prefix extracted from the appropriate GS2/GS3 config file.
1660# By default, /greenstone3 for GS3 or /greenstone for GS2.
1661sub get_greenstone_url_prefix() {
1662 # if already set on a previous occasion, just return that
1663 # (Don't want to keep repeating this: cost of re-opening and scanning files.)
1664 return $ENV{'GREENSTONE_URL_PREFIX'} if($ENV{'GREENSTONE_URL_PREFIX'});
1665
1666 my ($configfile, $urlprefix, $defaultUrlprefix);
1667 my @propertynames = ();
1668
1669 if($ENV{'GSDL3SRCHOME'}) {
1670 $defaultUrlprefix = "/greenstone3";
1671 $configfile = &util::filename_cat($ENV{'GSDL3SRCHOME'}, "packages", "tomcat", "conf", "Catalina", "localhost", "greenstone3.xml");
1672 push(@propertynames, qw/path\s*\=/);
1673 } else {
1674 $defaultUrlprefix = "/greenstone";
1675 $configfile = &util::filename_cat($ENV{'GSDLHOME'}, "cgi-bin", &os_dir(), "gsdlsite.cfg");
1676 push(@propertynames, (qw/\nhttpprefix/, qw/\ngwcgi/)); # inspect one property then the other
1677 }
1678
1679 $urlprefix = &extract_propvalue_from_file($configfile, \@propertynames);
1680
1681 if(!$urlprefix) { # no values found for URL prefix, use default values
1682 $urlprefix = $defaultUrlprefix;
1683 } else {
1684 #gwcgi can contain more than the wanted prefix, we split on / to get the first "directory" level
1685 $urlprefix =~ s/^\///; # remove the starting slash
1686 my @dirs = split(/(\\|\/)/, $urlprefix);
1687 $urlprefix = shift(@dirs);
1688
1689 if($urlprefix !~ m/^\//) { # in all cases: ensure the required forward slash is at the front
1690 $urlprefix = "/$urlprefix";
1691 }
1692 }
1693
1694 # set for the future
1695 $ENV{'GREENSTONE_URL_PREFIX'} = $urlprefix;
1696# print STDERR "*** in get_greenstone_url_prefix(): $urlprefix\n\n";
1697 return $urlprefix;
1698}
1699
1700
1701# Given a config file (xml or java properties file) and a list/array of regular expressions
1702# that represent property names to match on, this function will return the value for the 1st
1703# matching property name. If the return value is undefined, no matching property was found.
1704sub extract_propvalue_from_file() {
1705 my ($configfile, $propertynames) = @_;
1706
1707 my $value;
1708 unless(open(FIN, "<$configfile")) {
1709 print STDERR "extract_propvalue_from_file(): Unable to open $configfile. $!\n";
1710 return $value; # not initialised
1711 }
1712
1713 # Read the entire file at once, as one single line, then close it
1714 my $filecontents;
1715 {
1716 local $/ = undef;
1717 $filecontents = <FIN>;
1718 }
1719 close(FIN);
1720
1721 foreach my $regex (@$propertynames) {
1722 ($value) = $filecontents=~ m/$regex\s*(\S*)/s; # read value of the property given by regex up to the 1st space
1723 if($value) {
1724 $value =~ s/^\"//; # remove any startquotes
1725 $value =~ s/\".*$//; # remove the 1st endquotes (if any) followed by any xml
1726 last; # found value for a matching property, break from loop
1727 }
1728 }
1729
1730 return $value;
1731}
1732
1733# Subroutine that sources setup.bash, given GSDLHOME and GSDLOS and
1734# given that perllib is in @INC in order to invoke this subroutine.
1735# Call as follows -- after setting up INC to include perllib and
1736# after setting up GSDLHOME and GSDLOS:
1737#
1738# require util;
1739# &util::setup_greenstone_env($ENV{'GSDLHOME'}, $ENV{'GSDLOS'});
1740#
1741sub setup_greenstone_env() {
1742 my ($GSDLHOME, $GSDLOS) = @_;
1743
1744 #my %env_map = ();
1745 # Get the localised ENV settings of running a localised source setup.bash
1746 # and put it into the ENV here. Need to clear GSDLHOME before running setup
1747 #my $perl_command = "(cd $GSDLHOME; export GSDLHOME=; . ./setup.bash > /dev/null; env)";
1748 my $perl_command = "(cd $GSDLHOME; /bin/bash -c \"export GSDLHOME=; source setup.bash > /dev/null; env\")";
1749 if($GSDLOS =~ m/windows/i) {
1750 #$perl_command = "cmd /C \"cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set\"";
1751 $perl_command = "(cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set)";
1752 }
1753 if (!open(PIN, "$perl_command |")) {
1754 print STDERR ("Unable to execute command: $perl_command. $!\n");
1755 }
1756
1757 while (defined (my $perl_output_line = <PIN>)) {
1758 my($key,$value) = ($perl_output_line =~ m/^([^=]*)[=](.*)$/);
1759 #$env_map{$key}=$value;
1760 $ENV{$key}=$value;
1761 }
1762 close (PIN);
1763
1764 # If any keys in $ENV don't occur in Greenstone's localised env
1765 # (stored in $env_map), delete those entries from $ENV
1766 #foreach $key (keys %ENV) {
1767 # if(!defined $env_map{$key}) {
1768 # print STDOUT "**** DELETING ENV KEY: $key\tVALUE: $ENV{'$key'}\n";
1769 # delete $ENV{$key}; # del $ENV(key, value) pair
1770 # }
1771 #}
1772 #undef %env_map;
1773}
1774
1775sub get_perl_exec() {
1776 my $perl_exec = $^X; # may return just "perl"
1777
1778 if($ENV{'PERLPATH'}) {
1779 # OR: # $perl_exec = &util::filename_cat($ENV{'PERLPATH'},"perl");
1780 if($ENV{'GSDLOS'} =~ m/windows/) {
1781 $perl_exec = "$ENV{'PERLPATH'}\\Perl.exe";
1782 } else {
1783 $perl_exec = "$ENV{'PERLPATH'}/perl";
1784 }
1785 } else { # no PERLPATH, use Config{perlpath} else $^X: special variables
1786 # containing the full path to the current perl executable we're using
1787 $perl_exec = $Config{perlpath}; # configured path for perl
1788 if (!-e $perl_exec) { # may not point to location on this machine
1789 $perl_exec = $^X; # may return just "perl"
1790 if($perl_exec =~ m/^perl/i) { # warn if just perl or Perl.exe
1791 print STDERR "**** WARNING: Perl exec found contains no path: $perl_exec";
1792 }
1793 }
1794 }
1795
1796 return $perl_exec;
1797}
1798
1799# returns the path to the java command in the JRE included with GS (if any),
1800# quoted to safeguard any spaces in this path, otherwise a simple java
1801# command is returned which assumes and will try for a system java.
1802sub get_java_command {
1803 my $java = "java";
1804 if(defined $ENV{'GSDLHOME'}) { # should be, as this script would be launched from the cmd line
1805 # after running setup.bat or from GLI which also runs setup.bat
1806 my $java_bin = &util::filename_cat($ENV{'GSDLHOME'},"packages","jre","bin");
1807 if(-d $java_bin) {
1808 $java = &util::filename_cat($java_bin,"java");
1809 $java = "\"".$java."\""; # quoted to preserve spaces in path
1810 }
1811 }
1812 return $java;
1813}
1814
1815
1816# Given the qualified collection name (colgroup/collection),
1817# returns the collection and colgroup parts
1818sub get_collection_parts {
1819 # http://perldoc.perl.org/File/Basename.html
1820 # my($filename, $directories, $suffix) = fileparse($path);
1821 # "$directories contains everything up to and including the last directory separator in the $path
1822 # including the volume (if applicable). The remainder of the $path is the $filename."
1823 #my ($collection, $colgroup) = &File::Basename::fileparse($qualified_collection);
1824
1825 my $qualified_collection = shift(@_);
1826
1827 # Since activate.pl can be launched from the command-line, including by a user,
1828 # best not to assume colgroup uses URL-style slashes as would be the case with GLI
1829 # Also allow for the accidental inclusion of multiple slashes
1830 my ($colgroup, $collection) = split(/[\/\\]+/, $qualified_collection); #split('/', $qualified_collection);
1831
1832 if(!defined $collection) {
1833 $collection = $colgroup;
1834 $colgroup = "";
1835 }
1836 return ($collection, $colgroup);
1837}
1838
1839# work out the "collectdir/collection" location
1840sub resolve_collection_dir {
1841 my ($collect_dir, $qualified_collection, $site) = @_; #, $gs_mode
1842
1843 my ($colgroup, $collection) = &util::get_collection_parts($qualified_collection);
1844
1845 if (defined $collect_dir && $collect_dir) { # ensure not empty string either
1846 return &util::filename_cat($collect_dir,$colgroup, $collection);
1847 }
1848 elsif (defined($ENV{'GSDLCOLLECTDIR'})) {
1849 return $ENV{'GSDLCOLLECTDIR'};
1850 }
1851 else {
1852 if (defined $site) {
1853 return &util::filename_cat($ENV{'GSDL3HOME'},"sites",$site,"collect",$colgroup, $collection);
1854 }
1855 else {
1856 return &util::filename_cat($ENV{'GSDLHOME'},"collect",$colgroup, $collection);
1857 }
1858 }
1859}
1860
1861# Used by pdfpstoimg.pl and PDFBoxConverter to create a .item file from
1862# a directory containing sequentially numbered images.
1863sub create_itemfile
1864{
1865 my ($output_dir, $convert_basename, $convert_to) = @_;
1866 opendir(DIR, $output_dir) || die "can't opendir $output_dir: $!";
1867
1868 my $page_num = "";
1869 my @dir_files = grep {-f "$output_dir/$_"} readdir(DIR);
1870
1871 # Sort files in the directory by page_num
1872 sub page_number {
1873 my ($dir) = @_;
1874 my ($pagenum) =($dir =~ m/^.*[-\.]?(\d+)(\.(jpg|gif|png))?$/i);
1875
1876 $pagenum = 1 unless defined $pagenum;
1877 return $pagenum;
1878 }
1879
1880 # sort the files in the directory in the order of page_num rather than lexically.
1881 @dir_files = sort { page_number($a) <=> page_number($b) } @dir_files;
1882
1883 # work out if the numbering of the now sorted image files starts at 0 or not
1884 # by checking the number of the first _image_ file (skipping item files)
1885 my $starts_at_0 = 0;
1886 my $firstfile = ($dir_files[0] !~ /\.item$/i) ? $dir_files[0] : $dir_files[1];
1887 if(page_number($firstfile) == 0) { # 00 will evaluate to 0 too in this condition
1888 $starts_at_0 = 1;
1889 }
1890
1891 my $item_file = &util::filename_cat($output_dir, $convert_basename.".item");
1892 open(FILE,">$item_file");
1893 print FILE "<PagedDocument>\n";
1894
1895 foreach my $file (@dir_files){
1896 if ($file !~ /\.item/i){
1897 $page_num = page_number($file);
1898 $page_num++ if $starts_at_0; # image numbers start at 0, so add 1
1899 print FILE " <Page pagenum=\"$page_num\" imgfile=\"$file\" txtfile=\"\"/>\n";
1900 }
1901 }
1902
1903 print FILE "</PagedDocument>\n";
1904 close FILE;
1905 closedir DIR;
1906 return $item_file;
1907}
1908
19091;
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