source: main/trunk/greenstone2/perllib/util.pm@ 28394

Last change on this file since 28394 was 28394, checked in by davidb, 8 years ago

Further support for operation under Cygwin added

  • Property svn:keywords set to Author Date Id Revision
File size: 50.5 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;
29use FileUtils;
30
31use Encode;
32use File::Copy;
33use File::Basename;
34# Config for getting the perlpath in the recommended way, though it uses paths that are
35# hard-coded into the Config file that's generated upon configuring and compiling perl.
36# $^X works better in some cases to return the path to perl used to launch the script,
37# but if launched with plain "perl" (no full-path), that will be just what it returns.
38use Config;
39# New module for file related utility functions - intended as a
40# placeholder for an extension that allows a variety of different
41# filesystems (FTP, HTTP, SAMBA, WEBDav, HDFS etc)
42use FileUtils;
43
44if ($ENV{'GSDLOS'} =~ /^windows$/i) {
45 require Win32; # for working out Windows Long Filenames from Win 8.3 short filenames
46}
47
48# removes files (but not directories)
49sub rm {
50 warnings::warnif("deprecated", "util::rm() is deprecated, using FileUtils::removeFiles() instead");
51 return &FileUtils::removeFiles(@_);
52}
53
54# recursive removal
55sub filtered_rm_r {
56 warnings::warnif("deprecated", "util::filtered_rm_r() is deprecated, using FileUtils::removeFilesFiltered() instead");
57 return &FileUtils::removeFilesFiltered(@_);
58}
59
60# recursive removal
61sub rm_r {
62 warnings::warnif("deprecated", "util::rm_r() is deprecated, using FileUtils::removeFilesRecursive() instead");
63 return &FileUtils::removeFilesRecursive(@_);
64}
65
66# moves a file or a group of files
67sub mv {
68 warnings::warnif("deprecated", "util::mv() is deprecated, using FileUtils::moveFiles() instead");
69 return &FileUtils::moveFiles(@_);
70}
71
72# Move the contents of source directory into target directory
73# (as opposed to merely replacing target dir with the src dir)
74# This can overwrite any files with duplicate names in the target
75# but other files and folders in the target will continue to exist
76sub mv_dir_contents {
77 warnings::warnif("deprecated", "util::mv_dir_contents() is deprecated, using FileUtils::moveDirectoryContents() instead");
78 return &FileUtils::moveDirectoryContents(@_);
79}
80
81# copies a file or a group of files
82sub cp {
83 warnings::warnif("deprecated", "util::cp() is deprecated, using FileUtils::copyFiles() instead");
84 return &FileUtils::copyFiles(@_);
85}
86
87# recursively copies a file or group of files
88# syntax: cp_r (sourcefiles, destination directory)
89# destination must be a directory - to copy one file to
90# another use cp instead
91sub cp_r {
92 warnings::warnif("deprecated", "util::cp_r() is deprecated, using FileUtils::copyFilesrecursive() instead");
93 return &FileUtils::copyFilesRecursive(@_);
94}
95
96# recursively copies a file or group of files
97# syntax: cp_r (sourcefiles, destination directory)
98# destination must be a directory - to copy one file to
99# another use cp instead
100sub cp_r_nosvn {
101 warnings::warnif("deprecated", "util::cp_r_nosvn() is deprecated, using FileUtils::copyFilesRecursiveNoSVN() instead");
102 return &FileUtils::copyFilesRecursiveNoSVN(@_);
103}
104
105# copies a directory and its contents, excluding subdirectories, into a new directory
106sub cp_r_toplevel {
107 warnings::warnif("deprecated", "util::cp_r_toplevel() is deprecated, using FileUtils::recursiveCopyTopLevel() instead");
108 return &FileUtils::recursiveCopyTopLevel(@_);
109}
110
111sub mk_dir {
112 warnings::warnif("deprecated", "util::mk_dir() is deprecated, using FileUtils::makeDirectory() instead");
113 return &FileUtils::makeDirectory(@_);
114}
115
116# in case anyone cares - I did some testing (using perls Benchmark module)
117# on this subroutine against File::Path::mkpath (). mk_all_dir() is apparently
118# slightly faster (surprisingly) - Stefan.
119sub mk_all_dir {
120 warnings::warnif("deprecated", "util::mk_all_dir() is deprecated, using FileUtils::makeAllDirectories() instead");
121 return &FileUtils::makeAllDirectories(@_);
122}
123
124# make hard link to file if supported by OS, otherwise copy the file
125sub hard_link {
126 warnings::warnif("deprecated", "util::hard_link() is deprecated, using FileUtils::hardLink() instead");
127 return &FileUtils::hardLink(@_);
128}
129
130# make soft link to file if supported by OS, otherwise copy file
131sub soft_link {
132 warnings::warnif("deprecated", "util::soft_link() is deprecated, using FileUtils::softLink() instead");
133 return &FileUtils::softLink(@_);
134}
135
136# Primarily for filenames generated by processing
137# content of HTML files (which are mapped to UTF-8 internally)
138#
139# To turn this into an octet string that really exists on the file
140# system:
141# 1. don't need to do anything special for Unix-based systems
142# (as underlying file system is byte-code)
143# 2. need to map to short DOS filenames for Windows
144
145sub utf8_to_real_filename
146{
147 my ($utf8_filename) = @_;
148
149 my $real_filename;
150
151 if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
152 require Win32;
153
154 print STDERR "***** utf8 filename = $utf8_filename\n\n\n";
155
156 my $unicode_filename = decode("utf8",$utf8_filename);
157 $real_filename = Win32::GetShortPathName($unicode_filename);
158 }
159 else {
160 $real_filename = $utf8_filename;
161 }
162
163 return $real_filename;
164}
165
166sub fd_exists {
167 warnings::warnif("deprecated", "util::fd_exists() is deprecated, using FileUtils::fileTest() instead");
168 return &FileUtils::fileTest(@_);
169}
170
171sub file_exists {
172 warnings::warnif("deprecated", "util::file_exists() is deprecated, using FileUtils::fileExists() instead");
173 return &FileUtils::fileExists(@_);
174}
175
176sub dir_exists {
177 warnings::warnif("deprecated", "util::dir_exists() is deprecated, using FileUtils::directoryExists() instead");
178 return &FileUtils::directoryExists(@_);
179}
180
181# updates a copy of a directory in some other part of the filesystem
182# verbosity settings are: 0=low, 1=normal, 2=high
183# both $fromdir and $todir should be absolute paths
184sub cachedir {
185 warnings::warnif("deprecated", "util::cachedir() is deprecated, using FileUtils::synchronizeDirectories() instead");
186 return &FileUtils::synchronizeDirectories(@_);
187}
188
189# this function returns -1 if either file is not found
190# assumes that $file1 and $file2 are absolute file names or
191# in the current directory
192# $file2 is allowed to be newer than $file1
193sub differentfiles {
194 warnings::warnif("deprecated", "util::differentfiles() is deprecated, using FileUtils::differentFiles() instead");
195 return &FileUtils::differentFiles(@_);
196}
197
198
199sub get_tmp_filename
200{
201 my $file_ext = shift(@_) || undef;
202
203 my $opt_dot_file_ext = "";
204 if (defined $file_ext) {
205 if ($file_ext !~ m/\./) {
206 # no dot, so needs one added in at start
207 $opt_dot_file_ext = ".$file_ext"
208 }
209 else {
210 # allow for "extensions" such as _metadata.txt to be handled
211 # gracefully
212 $opt_dot_file_ext = $file_ext;
213 }
214 }
215
216 my $tmpdir = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "tmp");
217 &FileUtils::makeAllDirectories ($tmpdir) unless -e $tmpdir;
218
219 my $count = 1000;
220 my $rand = int(rand $count);
221 my $full_tmp_filename = &FileUtils::filenameConcatenate($tmpdir, "F$rand$opt_dot_file_ext");
222
223 while (-e $full_tmp_filename) {
224 $rand = int(rand $count);
225 $full_tmp_filename = &FileUtils::filenameConcatenate($tmpdir, "F$rand$opt_dot_file_ext");
226 $count++;
227 }
228
229 return $full_tmp_filename;
230}
231
232# These 2 are "static" variables used by the get_timestamped_tmp_folder() subroutine below and
233# belong with that function. They help ensure the timestamped tmp folders generated are unique.
234my $previous_timestamp = undef;
235my $previous_timestamp_f = 0; # frequency
236
237sub get_timestamped_tmp_folder
238{
239
240 my $tmp_dirname;
241 if(defined $ENV{'GSDLCOLLECTDIR'}) {
242 $tmp_dirname = $ENV{'GSDLCOLLECTDIR'};
243 } elsif(defined $ENV{'GSDLHOME'}) {
244 $tmp_dirname = $ENV{'GSDLHOME'};
245 } else {
246 return undef;
247 }
248
249 $tmp_dirname = &FileUtils::filenameConcatenate($tmp_dirname, "tmp");
250 &FileUtils::makeDirectory($tmp_dirname) if (!-e $tmp_dirname);
251
252 # add the timestamp into the path otherwise we can run into problems
253 # if documents have the same name
254 my $timestamp = time;
255
256 if (!defined $previous_timestamp || ($timestamp > $previous_timestamp)) {
257 $previous_timestamp_f = 0;
258 $previous_timestamp = $timestamp;
259 } else {
260 $previous_timestamp_f++;
261 }
262
263 my $time_tmp_dirname = &FileUtils::filenameConcatenate($tmp_dirname, $timestamp);
264 $tmp_dirname = $time_tmp_dirname;
265 my $i = $previous_timestamp_f;
266
267 if($previous_timestamp_f > 0) {
268 $tmp_dirname = $time_tmp_dirname."_".$i;
269 $i++;
270 }
271 while (-e $tmp_dirname) {
272 $tmp_dirname = $time_tmp_dirname."_".$i;
273 $i++;
274 }
275 &FileUtils::makeDirectory($tmp_dirname);
276
277 return $tmp_dirname;
278}
279
280sub get_timestamped_tmp_filename_in_collection
281{
282
283 my ($input_filename, $output_ext) = @_;
284 # derive tmp filename from input filename
285 my ($tailname, $dirname, $suffix)
286 = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
287
288 # softlink to collection tmp dir
289 my $tmp_dirname = &util::get_timestamped_tmp_folder();
290 $tmp_dirname = $dirname unless defined $tmp_dirname;
291
292 # following two steps copied from ConvertBinaryFile
293 # do we need them?? can't use them as is, as they use plugin methods.
294
295 #$tailname = $self->SUPER::filepath_to_utf8($tailname) unless &unicode::check_is_utf8($tailname);
296
297 # URLEncode this since htmls with images where the html filename is utf8 don't seem
298 # to work on Windows (IE or Firefox), as browsers are looking for filesystem-encoded
299 # files on the filesystem.
300 #$tailname = &util::rename_file($tailname, $self->{'file_rename_method'}, "without_suffix");
301 if (defined $output_ext) {
302 $output_ext = ".$output_ext"; # add the dot
303 } else {
304 $output_ext = $suffix;
305 }
306 $output_ext= lc($output_ext);
307 my $tmp_filename = &FileUtils::filenameConcatenate($tmp_dirname, "$tailname$output_ext");
308
309 return $tmp_filename;
310}
311
312sub get_toplevel_tmp_dir
313{
314 return &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "tmp");
315}
316
317
318sub filename_to_regex {
319 my $filename = shift (@_);
320
321 # need to make single backslashes double so that regex works
322 $filename =~ s/\\/\\\\/g; # if ($ENV{'GSDLOS'} =~ /^windows$/i);
323
324 # note that the first part of a substitution is a regex, so RE chars need to be escaped,
325 # the second part of a substitution is not a regex, so for e.g. full-stop can be specified literally
326 $filename =~ s/\./\\./g; # in case there are extensions/other full stops, escape them
327 $filename =~ s@\(@\\(@g; # escape brackets
328 $filename =~ s@\)@\\)@g; # escape brackets
329 $filename =~ s@\[@\\[@g; # escape brackets
330 $filename =~ s@\]@\\]@g; # escape brackets
331
332 return $filename;
333}
334
335sub unregex_filename {
336 my $filename = shift (@_);
337
338 # need to put doubled backslashes for regex back to single
339 $filename =~ s/\\\./\./g; # remove RE syntax for .
340 $filename =~ s@\\\(@(@g; # remove RE syntax for ( => "\(" turns into "("
341 $filename =~ s@\\\)@)@g; # remove RE syntax for ) => "\)" turns into ")"
342 $filename =~ s@\\\[@[@g; # remove RE syntax for [ => "\[" turns into "["
343 $filename =~ s@\\\]@]@g; # remove RE syntax for ] => "\]" turns into "]"
344
345 # \\ goes to \
346 # This is the last step in reverse mirroring the order of steps in filename_to_regex()
347 $filename =~ s/\\\\/\\/g; # remove RE syntax for \
348 return $filename;
349}
350
351sub filename_cat {
352 # I've disabled this warning for now, as every Greenstone perl
353 # script seems to make use of this function and so you drown in a
354 # sea of deprecated warnings [jmt12]
355# warnings::warnif("deprecated", "util::filename_cat() is deprecated, using FileUtils::filenameConcatenate() instead");
356 return &FileUtils::filenameConcatenate(@_);
357}
358
359
360sub _pathname_cat {
361 my $join_char = shift(@_);
362 my $first_path = shift(@_);
363 my (@pathnames) = @_;
364
365 # If first_path is not null or empty, then add it back into the list
366 if (defined $first_path && $first_path =~ /\S/) {
367 unshift(@pathnames, $first_path);
368 }
369
370 my $pathname = join($join_char, @pathnames);
371
372 # remove duplicate slashes
373 if ($join_char eq ";") {
374 $pathname =~ s/[\\\/]+/\\/g;
375 } else {
376 $pathname =~ s/[\/]+/\//g;
377 # DB: want a pathname abc\de.html to remain like this
378 }
379
380 return $pathname;
381}
382
383
384sub pathname_cat {
385 my (@pathnames) = @_;
386
387 my $join_char;
388 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
389 $join_char = ";";
390 } else {
391 $join_char = ":";
392 }
393 return _pathname_cat($join_char,@pathnames);
394}
395
396
397sub javapathname_cat {
398 my (@pathnames) = @_;
399
400 my $join_char;
401
402 # Unlike pathname_cat() above, not interested if running in a Cygwin environment
403 # This is because the java we run is actually a native Windows executable
404
405 if (($ENV{'GSDLOS'} =~ /^windows$/i)) {
406 $join_char = ";";
407 } else {
408 $join_char = ":";
409 }
410 return _pathname_cat($join_char,@pathnames);
411}
412
413
414
415sub tidy_up_oid {
416 my ($OID) = @_;
417 if ($OID =~ /\./) {
418 print STDERR "Warning, identifier $OID contains periods (.), removing them\n";
419 $OID =~ s/\.//g; #remove any periods
420 }
421 if ($OID =~ /^\s.*\s$/) {
422 print STDERR "Warning, identifier $OID starts or ends with whitespace. Removing it\n";
423 # remove starting and trailing whitespace
424 $OID =~ s/^\s+//;
425 $OID =~ s/\s+$//;
426 }
427 if ($OID =~ /^[\d]*$/) {
428 print STDERR "Warning, identifier $OID contains only digits. Prepending 'D'.\n";
429 $OID = "D" . $OID;
430 }
431
432 return $OID;
433}
434
435sub envvar_prepend {
436 my ($var,$val) = @_;
437
438 # 64 bit linux can't handle ";" as path separator, so make sure to set this to the right one for the OS
439## my $pathsep = (defined $ENV{'GSDLOS'} && $ENV{'GSDLOS'} !~ m/windows/) ? ":" : ";";
440
441 # Rewritten above to make ":" the default (Windows is the special
442 # case, anything else 'unusual' such as Solaris etc is Unix)
443 my $pathsep = (defined $ENV{'GSDLOS'} && (($ENV{'GSDLOS'} =~ m/windows/) && ($^O ne "cygwin"))) ? ";" : ":";
444
445 # do not prepend any value/path that's already in the environment variable
446
447 my $escaped_val = &filename_to_regex($val); # escape any backslashes and brackets for upcoming regex
448 if (!defined($ENV{$var})) {
449 $ENV{$var} = "$val";
450 }
451 elsif($ENV{$var} !~ m/$escaped_val/) {
452 $ENV{$var} = "$val".$pathsep.$ENV{$var};
453 }
454}
455
456sub envvar_append {
457 my ($var,$val) = @_;
458
459 # 64 bit linux can't handle ";" as path separator, so make sure to set this to the right one for the OS
460 my $pathsep = (defined $ENV{'GSDLOS'} && $ENV{'GSDLOS'} !~ m/windows/) ? ":" : ";";
461
462 # do not append any value/path that's already in the environment variable
463
464 my $escaped_val = &filename_to_regex($val); # escape any backslashes and brackets for upcoming regex
465 if (!defined($ENV{$var})) {
466 $ENV{$var} = "$val";
467 }
468 elsif($ENV{$var} !~ m/$escaped_val/) {
469 $ENV{$var} = $ENV{$var}.$pathsep."$val";
470 }
471}
472
473
474
475# splits a filename into a prefix and a tail extension using the tail_re, or
476# if that fails, splits on the file_extension . (dot)
477sub get_prefix_and_tail_by_regex {
478
479 my ($filename,$tail_re) = @_;
480
481 my ($file_prefix,$file_ext) = ($filename =~ m/^(.*?)($tail_re)$/);
482 if ((!defined $file_prefix) || (!defined $file_ext)) {
483 ($file_prefix,$file_ext) = ($filename =~ m/^(.*)(\..*?)$/);
484 }
485
486 return ($file_prefix,$file_ext);
487}
488
489# get full path and file only path from a base_dir (which may be empty) and
490# file (which may contain directories)
491sub get_full_filenames {
492 my ($base_dir, $file) = @_;
493
494# my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(0);
495# my ($lcfilename) = ($cfilename =~ m/([^\\\/]*)$/);
496# print STDERR "** Calling method: $lcfilename:$cline $cpackage->$csubr\n";
497
498
499 my $filename_full_path = $file;
500 # add on directory if present
501 $filename_full_path = &FileUtils::filenameConcatenate($base_dir, $file) if $base_dir =~ /\S/;
502
503 my $filename_no_path = $file;
504
505 # remove directory if present
506 $filename_no_path =~ s/^.*[\/\\]//;
507 return ($filename_full_path, $filename_no_path);
508}
509
510# returns the path of a file without the filename -- ie. the directory the file is in
511sub filename_head {
512 my $filename = shift(@_);
513
514 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
515 $filename =~ s/[^\\\\]*$//;
516 }
517 else {
518 $filename =~ s/[^\\\/]*$//;
519 }
520
521 return $filename;
522}
523
524
525
526# returns 1 if filename1 and filename2 point to the same
527# file or directory
528sub filenames_equal {
529 my ($filename1, $filename2) = @_;
530
531 # use filename_cat to clean up trailing slashes and
532 # multiple slashes
533 $filename1 = &FileUtils::filenameConcatenate($filename1);
534 $filename2 = &FileUtils::filenameConcatenate($filename2);
535
536 # filenames not case sensitive on windows
537 if ($ENV{'GSDLOS'} =~ /^windows$/i) {
538 $filename1 =~ tr/[A-Z]/[a-z]/;
539 $filename2 =~ tr/[A-Z]/[a-z]/;
540 }
541 return 1 if $filename1 eq $filename2;
542 return 0;
543}
544
545# If filename is relative to within_dir, returns the relative path of filename to that directory
546# with slashes in the filename returned as they were in the original (absolute) filename.
547sub filename_within_directory
548{
549 my ($filename,$within_dir) = @_;
550
551 if ($within_dir !~ m/[\/\\]$/) {
552 my $dirsep = &util::get_dirsep();
553 $within_dir .= $dirsep;
554 }
555
556 $within_dir = &filename_to_regex($within_dir); # escape DOS style file separator and brackets
557 if ($filename =~ m/^$within_dir(.*)$/) {
558 $filename = $1;
559 }
560
561 return $filename;
562}
563
564# If filename is relative to within_dir, returns the relative path of filename to that directory in URL format.
565# Filename and within_dir can be any type of slashes, but will be compared as URLs (i.e. unix-style slashes).
566# The subpath returned will also be a URL type filename.
567sub filename_within_directory_url_format
568{
569 my ($filename,$within_dir) = @_;
570
571 # convert parameters only to / slashes if Windows
572
573 my $filename_urlformat = &filepath_to_url_format($filename);
574 my $within_dir_urlformat = &filepath_to_url_format($within_dir);
575
576 #if ($within_dir_urlformat !~ m/\/$/) {
577 # make sure directory ends with a slash
578 #$within_dir_urlformat .= "/";
579 #}
580
581 my $within_dir_urlformat_re = &filename_to_regex($within_dir_urlformat); # escape any special RE characters, such as brackets
582
583 #print STDERR "@@@@@ $filename_urlformat =~ $within_dir_urlformat_re\n";
584
585 # dir prefix may or may not end with a slash (this is discarded when extracting the sub-filepath)
586 if ($filename_urlformat =~ m/^$within_dir_urlformat_re(?:\/)*(.*)$/) {
587 $filename_urlformat = $1;
588 }
589
590 return $filename_urlformat;
591}
592
593# Convert parameter to use / slashes if Windows (if on Linux leave any \ as is,
594# since on Linux it doesn't represent a file separator but an escape char).
595sub filepath_to_url_format
596{
597 my ($filepath) = @_;
598 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
599 # Only need to worry about Windows, as Unix style directories already in url-format
600 # Convert Windows style \ => /
601 $filepath =~ s@\\@/@g;
602 }
603 return $filepath;
604}
605
606# regex filepaths on windows may include \\ as path separator. Convert \\ to /
607sub filepath_regex_to_url_format
608{
609 my ($filepath) = @_;
610 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
611 # Only need to worry about Windows, as Unix style directories already in url-format
612 # Convert Windows style \\ => /
613 $filepath =~ s@\\\\@/@g;
614 }
615 return $filepath;
616
617}
618
619# Like File::Basename::fileparse, but expects filepath in url format (ie only / slash for dirsep)
620# and ignores trailing /
621# returns (file, dirs) dirs will be empty if no subdirs
622sub url_fileparse
623{
624 my ($filepath) = @_;
625 # remove trailing /
626 $filepath =~ s@/$@@;
627 if ($filepath !~ m@/@) {
628 return ($filepath, "");
629 }
630 my ($dirs, $file) = $filepath =~ m@(.+/)([^/]+)@;
631 return ($file, $dirs);
632
633}
634
635
636sub filename_within_collection
637{
638 my ($filename) = @_;
639
640 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
641
642 if (defined $collect_dir) {
643
644 # if from within GSDLCOLLECTDIR, then remove directory prefix
645 # so source_filename is realative to it. This is done to aid
646 # portability, i.e. the collection can be moved to somewhere
647 # else on the file system and the archives directory will still
648 # work. This is needed, for example in the applet version of
649 # GLI where GSDLHOME/collect on the server will be different to
650 # the collect directory of the remove user. Of course,
651 # GSDLCOLLECTDIR subsequently needs to be put back on to turn
652 # it back into a full pathname.
653
654 $filename = filename_within_directory($filename,$collect_dir);
655 }
656
657 return $filename;
658}
659
660sub prettyprint_file
661{
662 my ($base_dir,$file,$gli) = @_;
663
664 my $filename_full_path = &FileUtils::filenameConcatenate($base_dir,$file);
665
666 if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
667 require Win32;
668
669 # For some reason base_dir in the form c:/a/b/c
670 # This leads to confusion later on, so turn it back into
671 # the more usual Windows form
672 $base_dir =~ s/\//\\/g;
673 my $long_base_dir = Win32::GetLongPathName($base_dir);
674 my $long_full_path = Win32::GetLongPathName($filename_full_path);
675
676 $file = filename_within_directory($long_full_path,$long_base_dir);
677 $file = encode("utf8",$file) if ($gli);
678 }
679
680 return $file;
681}
682
683
684sub upgrade_if_dos_filename
685{
686 my ($filename_full_path,$and_encode) = @_;
687
688 if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
689 # Ensure any DOS-like filename, such as test~1.txt, has been upgraded
690 # to its long (Windows) version
691 my $long_filename = Win32::GetLongPathName($filename_full_path);
692 if (defined $long_filename) {
693 $filename_full_path = $long_filename;
694 }
695 # Make sure initial drive letter is lower-case (to fit in with rest of Greenstone)
696 $filename_full_path =~ s/^(.):/\u$1:/;
697 if ((defined $and_encode) && ($and_encode)) {
698 $filename_full_path = encode("utf8",$filename_full_path);
699 }
700 }
701
702 return $filename_full_path;
703}
704
705
706sub downgrade_if_dos_filename
707{
708 my ($filename_full_path) = @_;
709
710 if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
711 require Win32;
712
713 # Ensure the given long Windows filename is in a form that can
714 # be opened by Perl => convert it to a short DOS-like filename
715
716 my $short_filename = Win32::GetShortPathName($filename_full_path);
717 if (defined $short_filename) {
718 $filename_full_path = $short_filename;
719 }
720 # Make sure initial drive letter is lower-case (to fit in
721 # with rest of Greenstone)
722 $filename_full_path =~ s/^(.):/\u$1:/;
723 }
724
725 return $filename_full_path;
726}
727
728sub block_filename
729{
730 my ($block_hash,$filename) = @_;
731
732 if (($ENV{'GSDLOS'} =~ m/^windows$/) && ($^O ne "cygwin")) {
733
734 # lower case the entire thing, eg for cover.jpg when its actually cover.JPG
735 my $lower_filename = lc($filename);
736 $block_hash->{'file_blocks'}->{$lower_filename} = 1;
737# my $lower_drive = $filename;
738# $lower_drive =~ s/^([A-Z]):/\l$1:/i;
739
740# my $upper_drive = $filename;
741# $upper_drive =~ s/^([A-Z]):/\u$1:/i;
742#
743# $block_hash->{'file_blocks'}->{$lower_drive} = 1;
744# $block_hash->{'file_blocks'}->{$upper_drive} = 1;
745 }
746 else {
747 $block_hash->{'file_blocks'}->{$filename} = 1;
748 }
749}
750
751
752sub filename_is_absolute
753{
754 warnings::warnif("deprecated", "util::filename_is_absolute() is deprecated, using FileUtils::isFilenameAbsolute() instead");
755 return &FileUtils::isFilenameAbsolute(@_);
756}
757
758
759## @method make_absolute()
760#
761# Ensure the given file path is absolute in respect to the given base path.
762#
763# @param $base_dir A string denoting the base path the given dir must be
764# absolute to.
765# @param $dir The directory to be made absolute as a string. Note that the
766# dir may already be absolute, in which case it will remain
767# unchanged.
768# @return The now absolute form of the directory as a string.
769#
770# @author John Thompson, DL Consulting Ltd.
771# @copy 2006 DL Consulting Ltd.
772#
773#used in buildcol.pl, doesn't work for all cases --kjdon
774sub make_absolute {
775
776 my ($base_dir, $dir) = @_;
777### print STDERR "dir = $dir\n";
778 $dir =~ s/[\\\/]+/\//g;
779 $dir = $base_dir . "/$dir" unless ($dir =~ m|^(\w:)?/|);
780 $dir =~ s|^/tmp_mnt||;
781 1 while($dir =~ s|/[^/]*/\.\./|/|g);
782 $dir =~ s|/[.][.]?/|/|g;
783 $dir =~ tr|/|/|s;
784### print STDERR "dir = $dir\n";
785
786 return $dir;
787}
788## make_absolute() ##
789
790sub get_dirsep {
791
792 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
793 return "\\";
794 } else {
795 return "\/";
796 }
797}
798
799sub get_os_dirsep {
800
801 if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
802 return "\\\\";
803 } else {
804 return "\\\/";
805 }
806}
807
808sub get_re_dirsep {
809
810 return "\\\\|\\\/";
811}
812
813
814sub get_dirsep_tail {
815 my ($filename) = @_;
816
817 # returns last part of directory or filename
818 # On unix e.g. a/b.d => b.d
819 # a/b/c => c
820
821 my $dirsep = get_re_dirsep();
822 my @dirs = split (/$dirsep/, $filename);
823 my $tail = pop @dirs;
824
825 # - caused problems under windows
826 #my ($tail) = ($filename =~ m/^(?:.*?$dirsep)?(.*?)$/);
827
828 return $tail;
829}
830
831
832# if this is running on windows we want binaries to end in
833# .exe, otherwise they don't have to end in any extension
834sub get_os_exe {
835 return ".exe" if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin"));
836 return "";
837}
838
839
840# test to see whether this is a big or little endian machine
841sub is_little_endian
842{
843 # To determine the name of the operating system, the variable $^O is a cheap alternative to pulling it out of the Config module;
844 # 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
845 # Otherwise, it's little endian
846
847 #return 0 if $^O =~ /^darwin$/i;
848 #return 0 if $ENV{'GSDLOS'} =~ /^darwin$/i;
849
850 # Going back to stating exactly whether the machine is little endian
851 # or big endian, without any special case for Macs. Since for rata it comes
852 # back with little endian and for shuttle with bigendian.
853 return (ord(substr(pack("s",1), 0, 1)) == 1);
854}
855
856
857# will return the collection name if successful, "" otherwise
858sub use_collection {
859 my ($collection, $collectdir) = @_;
860
861 if (!defined $collectdir || $collectdir eq "") {
862 $collectdir = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "collect");
863 }
864
865 if (!defined $ENV{'GREENSTONEHOME'}) { # for GS3, would have been defined in use_site_collection, to GSDL3HOME
866 $ENV{'GREENSTONEHOME'} = $ENV{'GSDLHOME'};
867 }
868
869 # get and check the collection
870 if (!defined($collection) || $collection eq "") {
871 if (defined $ENV{'GSDLCOLLECTION'}) {
872 $collection = $ENV{'GSDLCOLLECTION'};
873 } else {
874 print STDOUT "No collection specified\n";
875 return "";
876 }
877 }
878
879 if ($collection eq "modelcol") {
880 print STDOUT "You can't use modelcol.\n";
881 return "";
882 }
883
884 # make sure the environment variables GSDLCOLLECTION and GSDLCOLLECTDIR
885 # are defined
886 $ENV{'GSDLCOLLECTION'} = $collection;
887 $ENV{'GSDLCOLLECTHOME'} = $collectdir;
888 $ENV{'GSDLCOLLECTDIR'} = &FileUtils::filenameConcatenate($collectdir, $collection);
889
890 # make sure this collection exists
891 if (!-e $ENV{'GSDLCOLLECTDIR'}) {
892 print STDOUT "Invalid collection ($collection).\n";
893 return "";
894 }
895
896 # everything is ready to go
897 return $collection;
898}
899
900sub get_current_collection_name {
901 return $ENV{'GSDLCOLLECTION'};
902}
903
904
905# will return the collection name if successful, "" otherwise.
906# Like use_collection (above) but for greenstone 3 (taking account of site level)
907
908sub use_site_collection {
909 my ($site, $collection, $collectdir) = @_;
910
911 if (!defined $collectdir || $collectdir eq "") {
912 die "GSDL3HOME not set.\n" unless defined $ENV{'GSDL3HOME'};
913 $collectdir = &FileUtils::filenameConcatenate($ENV{'GSDL3HOME'}, "sites", $site, "collect");
914 }
915
916 if (defined $ENV{'GSDL3HOME'}) {
917 $ENV{'GREENSTONEHOME'} = $ENV{'GSDL3HOME'};
918 $ENV{'SITEHOME'} = &FileUtils::filenameConcatenate($ENV{'GREENSTONEHOME'}, "sites", $site);
919 } elsif (defined $ENV{'GSDL3SRCHOME'}) {
920 $ENV{'GREENSTONEHOME'} = &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'}, "web");
921 $ENV{'SITEHOME'} = &FileUtils::filenameConcatenate($ENV{'GREENSTONEHOME'}, "sites", $site);
922 } else {
923 print STDERR "*** util::use_site_collection(). Warning: Neither GSDL3HOME nor GSDL3SRCHOME set.\n";
924 }
925
926 # collectdir explicitly set by this point (using $site variable if required).
927 # Can call "old" gsdl2 use_collection now.
928
929 return use_collection($collection,$collectdir);
930}
931
932
933
934sub locate_config_file
935{
936 my ($file) = @_;
937
938 my $locations = locate_config_files($file);
939
940 return shift @$locations; # returns undef if 'locations' is empty
941}
942
943
944sub locate_config_files
945{
946 my ($file) = @_;
947
948 my @locations = ();
949
950 if (-e $file) {
951 # Clearly specified (most likely full filename)
952 # No need to hunt in 'etc' directories, return value unchanged
953 push(@locations,$file);
954 }
955 else {
956 # Check for collection specific one before looking in global GSDL 'etc'
957 if (defined $ENV{'GSDLCOLLECTDIR'} && $ENV{'GSDLCOLLECTDIR'} ne "") {
958 my $test_collect_etc_filename
959 = &FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'},"etc", $file);
960
961 if (-e $test_collect_etc_filename) {
962 push(@locations,$test_collect_etc_filename);
963 }
964 }
965 my $test_main_etc_filename
966 = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"etc", $file);
967 if (-e $test_main_etc_filename) {
968 push(@locations,$test_main_etc_filename);
969 }
970 }
971
972 return \@locations;
973}
974
975
976sub hyperlink_text
977{
978 my ($text) = @_;
979
980 $text =~ s/(http:\/\/[^\s]+)/<a href=\"$1\">$1<\/a>/mg;
981 $text =~ s/(^|\s+)(www\.(\w|\.)+)/<a href=\"http:\/\/$2\">$2<\/a>/mg;
982
983 return $text;
984}
985
986
987# A method to check if a directory is empty (note that an empty directory still has non-zero size!!!)
988# Code is from http://episteme.arstechnica.com/eve/forums/a/tpc/f/6330927813/m/436007700831
989sub is_dir_empty {
990 warnings::warnif("deprecated", "util::is_dir_empty() is deprecated, using FileUtils::isDirectoryEmpty() instead");
991 return &FileUtils::isDirectoryEmpty(@_);
992}
993
994# Returns the given filename converted using either URL encoding or base64
995# encoding, as specified by $rename_method. If the given filename has no suffix
996# (if it is just the tailname), then $no_suffix should be some defined value.
997# rename_method can be url, none, base64
998sub rename_file {
999 my ($filename, $rename_method, $no_suffix) = @_;
1000
1001 if(!$filename) { # undefined or empty string
1002 return $filename;
1003 }
1004
1005 if (!$rename_method) {
1006 print STDERR "WARNING: no file renaming method specified. Defaulting to using URL encoding...\n";
1007 # Debugging information
1008 # my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(1);
1009 # print STDERR "Called from method: $cfilename:$cline $cpackage->$csubr\n";
1010 $rename_method = "url";
1011 } elsif($rename_method eq "none") {
1012 return $filename; # would have already been renamed
1013 }
1014
1015 # No longer replace spaces with underscores, since underscores mess with incremental rebuild
1016 ### Replace spaces with underscore. Do this first else it can go wrong below when getting tailname
1017 ###$filename =~ s/ /_/g;
1018
1019 my ($tailname,$dirname,$suffix);
1020 if($no_suffix) { # given a tailname, no suffix
1021 ($tailname,$dirname) = File::Basename::fileparse($filename);
1022 }
1023 else {
1024 ($tailname,$dirname,$suffix) = File::Basename::fileparse($filename, "\\.(?:[^\\.]+?)\$");
1025 }
1026 if (!$suffix) {
1027 $suffix = "";
1028 }
1029 # This breaks GLI matching extracted metadata to files in Enrich panel, as
1030 # original is eg .JPG while gsdlsourcefilename ends up .jpg
1031 # Not sure why it was done in first place...
1032 #else {
1033 #$suffix = lc($suffix);
1034 #}
1035
1036 if ($rename_method eq "url") {
1037 $tailname = &unicode::url_encode($tailname);
1038 }
1039 elsif ($rename_method eq "base64") {
1040 $tailname = &unicode::base64_encode($tailname);
1041 $tailname =~ s/\s*//sg; # for some reason it adds spaces not just at end but also in middle
1042 }
1043
1044 $filename = "$tailname$suffix";
1045 $filename = "$dirname$filename" if ($dirname ne "./" && $dirname ne ".\\");
1046
1047 return $filename;
1048}
1049
1050
1051# BACKWARDS COMPATIBILITY: Just in case there are old .ldb/.bdb files
1052sub rename_ldb_or_bdb_file {
1053 my ($filename_no_ext) = @_;
1054
1055 my $new_filename = "$filename_no_ext.gdb";
1056 return if (-f $new_filename); # if the file has the right extension, don't need to do anything
1057 # try ldb
1058 my $old_filename = "$filename_no_ext.ldb";
1059
1060 if (-f $old_filename) {
1061 print STDERR "Renaming $old_filename to $new_filename\n";
1062 rename ($old_filename, $new_filename)
1063 || print STDERR "Rename failed: $!\n";
1064 return;
1065 }
1066 # try bdb
1067 $old_filename = "$filename_no_ext.bdb";
1068 if (-f $old_filename) {
1069 print STDERR "Renaming $old_filename to $new_filename\n";
1070 rename ($old_filename, $new_filename)
1071 || print STDERR "Rename failed: $!\n";
1072 return;
1073 }
1074}
1075
1076sub os_dir() {
1077
1078 my $gsdlarch = "";
1079 if(defined $ENV{'GSDLARCH'}) {
1080 $gsdlarch = $ENV{'GSDLARCH'};
1081 }
1082 return $ENV{'GSDLOS'}.$gsdlarch;
1083}
1084
1085# Returns the greenstone URL prefix extracted from the appropriate GS2/GS3 config file.
1086# By default, /greenstone3 for GS3 or /greenstone for GS2.
1087sub get_greenstone_url_prefix() {
1088 # if already set on a previous occasion, just return that
1089 # (Don't want to keep repeating this: cost of re-opening and scanning files.)
1090 return $ENV{'GREENSTONE_URL_PREFIX'} if($ENV{'GREENSTONE_URL_PREFIX'});
1091
1092 my ($configfile, $urlprefix, $defaultUrlprefix);
1093 my @propertynames = ();
1094
1095 if($ENV{'GSDL3SRCHOME'}) {
1096 $defaultUrlprefix = "/greenstone3";
1097 $configfile = &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'}, "packages", "tomcat", "conf", "Catalina", "localhost", "greenstone3.xml");
1098 push(@propertynames, qw/path\s*\=/);
1099 } else {
1100 $defaultUrlprefix = "/greenstone";
1101 $configfile = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "cgi-bin", &os_dir(), "gsdlsite.cfg");
1102 push(@propertynames, (qw/\nhttpprefix/, qw/\ngwcgi/)); # inspect one property then the other
1103 }
1104
1105 $urlprefix = &extract_propvalue_from_file($configfile, \@propertynames);
1106
1107 if(!$urlprefix) { # no values found for URL prefix, use default values
1108 $urlprefix = $defaultUrlprefix;
1109 } else {
1110 #gwcgi can contain more than the wanted prefix, we split on / to get the first "directory" level
1111 $urlprefix =~ s/^\///; # remove the starting slash
1112 my @dirs = split(/(\\|\/)/, $urlprefix);
1113 $urlprefix = shift(@dirs);
1114
1115 if($urlprefix !~ m/^\//) { # in all cases: ensure the required forward slash is at the front
1116 $urlprefix = "/$urlprefix";
1117 }
1118 }
1119
1120 # set for the future
1121 $ENV{'GREENSTONE_URL_PREFIX'} = $urlprefix;
1122# print STDERR "*** in get_greenstone_url_prefix(): $urlprefix\n\n";
1123 return $urlprefix;
1124}
1125
1126
1127# Given a config file (xml or java properties file) and a list/array of regular expressions
1128# that represent property names to match on, this function will return the value for the 1st
1129# matching property name. If the return value is undefined, no matching property was found.
1130sub extract_propvalue_from_file() {
1131 my ($configfile, $propertynames) = @_;
1132
1133 my $value;
1134 unless(open(FIN, "<$configfile")) {
1135 print STDERR "extract_propvalue_from_file(): Unable to open $configfile. $!\n";
1136 return $value; # not initialised
1137 }
1138
1139 # Read the entire file at once, as one single line, then close it
1140 my $filecontents;
1141 {
1142 local $/ = undef;
1143 $filecontents = <FIN>;
1144 }
1145 close(FIN);
1146
1147 foreach my $regex (@$propertynames) {
1148 ($value) = $filecontents=~ m/$regex\s*(\S*)/s; # read value of the property given by regex up to the 1st space
1149 if($value) {
1150 $value =~ s/^\"//; # remove any startquotes
1151 $value =~ s/\".*$//; # remove the 1st endquotes (if any) followed by any xml
1152 last; # found value for a matching property, break from loop
1153 }
1154 }
1155
1156 return $value;
1157}
1158
1159# Subroutine that sources setup.bash, given GSDLHOME and GSDLOS and
1160# given that perllib is in @INC in order to invoke this subroutine.
1161# Call as follows -- after setting up INC to include perllib and
1162# after setting up GSDLHOME and GSDLOS:
1163#
1164# require util;
1165# &util::setup_greenstone_env($ENV{'GSDLHOME'}, $ENV{'GSDLOS'});
1166#
1167sub setup_greenstone_env() {
1168 my ($GSDLHOME, $GSDLOS) = @_;
1169
1170 #my %env_map = ();
1171 # Get the localised ENV settings of running a localised source setup.bash
1172 # and put it into the ENV here. Need to clear GSDLHOME before running setup
1173 #my $perl_command = "(cd $GSDLHOME; export GSDLHOME=; . ./setup.bash > /dev/null; env)";
1174 my $perl_command = "(cd $GSDLHOME; /bin/bash -c \"export GSDLHOME=; source setup.bash > /dev/null; env\")";
1175 if (($GSDLOS =~ m/windows/i) && ($^O ne "cygwin")) {
1176 #$perl_command = "cmd /C \"cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set\"";
1177 $perl_command = "(cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set)";
1178 }
1179 if (!open(PIN, "$perl_command |")) {
1180 print STDERR ("Unable to execute command: $perl_command. $!\n");
1181 }
1182
1183 while (defined (my $perl_output_line = <PIN>)) {
1184 my($key,$value) = ($perl_output_line =~ m/^([^=]*)[=](.*)$/);
1185 #$env_map{$key}=$value;
1186 $ENV{$key}=$value;
1187 }
1188 close (PIN);
1189
1190 # If any keys in $ENV don't occur in Greenstone's localised env
1191 # (stored in $env_map), delete those entries from $ENV
1192 #foreach $key (keys %ENV) {
1193 # if(!defined $env_map{$key}) {
1194 # print STDOUT "**** DELETING ENV KEY: $key\tVALUE: $ENV{'$key'}\n";
1195 # delete $ENV{$key}; # del $ENV(key, value) pair
1196 # }
1197 #}
1198 #undef %env_map;
1199}
1200
1201sub get_perl_exec() {
1202 my $perl_exec = $^X; # may return just "perl"
1203
1204 if($ENV{'PERLPATH'}) {
1205 # OR: # $perl_exec = &FileUtils::filenameConcatenate($ENV{'PERLPATH'},"perl");
1206 if (($ENV{'GSDLOS'} =~ m/windows/) && ($^O ne "cygwin")) {
1207 $perl_exec = "$ENV{'PERLPATH'}\\Perl.exe";
1208 } else {
1209 $perl_exec = "$ENV{'PERLPATH'}/perl";
1210 }
1211 } else { # no PERLPATH, use Config{perlpath} else $^X: special variables
1212 # containing the full path to the current perl executable we're using
1213 $perl_exec = $Config{perlpath}; # configured path for perl
1214 if (!-e $perl_exec) { # may not point to location on this machine
1215 $perl_exec = $^X; # may return just "perl"
1216 if($perl_exec =~ m/^perl/i) { # warn if just perl or Perl.exe
1217 print STDERR "**** WARNING: Perl exec found contains no path: $perl_exec";
1218 }
1219 }
1220 }
1221
1222 return $perl_exec;
1223}
1224
1225# returns the path to the java command in the JRE included with GS (if any),
1226# quoted to safeguard any spaces in this path, otherwise a simple java
1227# command is returned which assumes and will try for a system java.
1228sub get_java_command {
1229 my $java = "java";
1230 if(defined $ENV{'GSDLHOME'}) { # should be, as this script would be launched from the cmd line
1231 # after running setup.bat or from GLI which also runs setup.bat
1232 my $java_bin = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"packages","jre","bin");
1233 if(-d $java_bin) {
1234 $java = &FileUtils::filenameConcatenate($java_bin,"java");
1235 $java = "\"".$java."\""; # quoted to preserve spaces in path
1236 }
1237 }
1238 return $java;
1239}
1240
1241
1242# Given the qualified collection name (colgroup/collection),
1243# returns the collection and colgroup parts
1244sub get_collection_parts {
1245 # http://perldoc.perl.org/File/Basename.html
1246 # my($filename, $directories, $suffix) = fileparse($path);
1247 # "$directories contains everything up to and including the last directory separator in the $path
1248 # including the volume (if applicable). The remainder of the $path is the $filename."
1249 #my ($collection, $colgroup) = &File::Basename::fileparse($qualified_collection);
1250
1251 my $qualified_collection = shift(@_);
1252
1253 # Since activate.pl can be launched from the command-line, including by a user,
1254 # best not to assume colgroup uses URL-style slashes as would be the case with GLI
1255 # Also allow for the accidental inclusion of multiple slashes
1256 my ($colgroup, $collection) = split(/[\/\\]+/, $qualified_collection); #split('/', $qualified_collection);
1257
1258 if(!defined $collection) {
1259 $collection = $colgroup;
1260 $colgroup = "";
1261 }
1262 return ($collection, $colgroup);
1263}
1264
1265# work out the "collectdir/collection" location
1266sub resolve_collection_dir {
1267 my ($collect_dir, $qualified_collection, $site) = @_; #, $gs_mode
1268
1269 if (defined $ENV{'GSDLCOLLECTDIR'}) { # a predefined collection dir exists
1270 return $ENV{'GSDLCOLLECTDIR'};
1271 }
1272
1273 my ($colgroup, $collection) = &util::get_collection_parts($qualified_collection);
1274
1275 if (!defined $collect_dir || !$collect_dir) { # if undefined or empty string
1276 $collect_dir = &util::get_working_collect_dir($site);
1277 }
1278
1279 return &FileUtils::filenameConcatenate($collect_dir,$colgroup,$collection);
1280}
1281
1282# work out the full path to "collect" of this greenstone 2/3 installation
1283sub get_working_collect_dir {
1284 my ($site) = @_;
1285
1286 if (defined $ENV{'GSDLCOLLECTHOME'}) { # a predefined collect dir exists
1287 return $ENV{'GSDLCOLLECTHOME'};
1288 }
1289
1290 if (defined $site && $site) { # site non-empty, so get default collect dir for GS3
1291
1292 if (defined $ENV{'GSDL3HOME'}) {
1293 return &FileUtils::filenameConcatenate($ENV{'GSDL3HOME'},"sites",$site,"collect"); # web folder
1294 }
1295 elsif (defined $ENV{'GSDL3SRCHOME'}) {
1296 return &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'},"web","sites",$site,"collect");
1297 }
1298 }
1299
1300 elsif (defined $ENV{'SITEHOME'}) {
1301 return &FileUtils::filenameConcatenate($ENV{'SITEHOME'},"collect");
1302 }
1303
1304 else { # get default collect dir for GS2
1305 return &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"collect");
1306 }
1307}
1308
1309sub is_abs_path_any_os {
1310 my ($path) = @_;
1311
1312 # We can have filenames in our DBs that were produced on other OS, so this method exists
1313 # to help identify absolute paths in such cases.
1314
1315 return 1 if($path =~ m@^/@); # full paths begin with forward slash on linux/mac
1316 return 1 if($path =~ m@^([a-zA-Z]\:|\\)@); # full paths begin with drive letter colon for Win or \ for volume, http://stackoverflow.com/questions/13011013/get-only-volume-name-from-filepath
1317
1318 return 0;
1319}
1320
1321
1322# This subroutine is for improving portability of Greenstone collections from one OS to another,
1323# to be used to convert absolute paths going into db files into paths with placeholders instead.
1324# This sub works with util::get_common_gs_paths and takes a path to a greenstone file and, if it's
1325# an absolute path, then it will replace the longest matching greenstone-path prefix of the given
1326# path with a placeholder to match.
1327# The Greenstone-path prefixes that can be matched are the following common Greenstone paths:
1328# the path to the current (specific) collection, the path to the general GS collect directory,
1329# the path to the site directory if GS3, else the path to the GSDLHOME/GSDL3HOME folder.
1330# The longest matching prefix will be replaced with the equivalent placeholder:
1331# @THISCOLLECTPATH@, else @COLLECTHOME@, else @SITEHOME@, else @GSDLHOME@.
1332sub abspath_to_placeholders {
1333 my $path = shift(@_); # path to convert from absolute to one with placeholders
1334 my $opt_long_or_short_winfilenames = shift(@_) || "short"; # whether we want to force use of long file names even on windows, default uses short
1335
1336 return $path unless is_abs_path_any_os($path); # path is relative
1337
1338 if ($opt_long_or_short_winfilenames eq "long") {
1339 $path = &util::upgrade_if_dos_filename($path); # will only do something on windows
1340 }
1341
1342 # now we know we're dealing with absolute paths and have to replace gs prefixes with placeholders
1343 my @gs_paths = ($ENV{'GSDLCOLLECTDIR'}, $ENV{'GSDLCOLLECTHOME'}, $ENV{'SITEHOME'}, $ENV{'GREENSTONEHOME'}); # list in this order: from longest to shortest path
1344
1345 my %placeholder_map = ($ENV{'GREENSTONEHOME'} => '@GSDLHOME@', # can't use double-quotes around at-sign, else perl tries to evaluate it as referring to an array
1346 $ENV{'GSDLCOLLECTHOME'} => '@COLLECTHOME@',
1347 $ENV{'GSDLCOLLECTDIR'} => '@THISCOLLECTPATH@'
1348 );
1349 $placeholder_map{$ENV{'SITEHOME'}} = '@SITEHOME@' if defined $ENV{'SITEHOME'};
1350
1351 $path = &util::_abspath_to_placeholders($path, \@gs_paths, \%placeholder_map);
1352
1353 if ($ENV{'GSDLOS'} =~ /^windows$/i && $opt_long_or_short_winfilenames eq "short") {
1354 # for windows need to look for matches on short file names too
1355 # matched paths are again to be replaced with the usual placeholders
1356
1357 my $gsdlcollectdir = &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTDIR'});
1358 my $gsdlcollecthome = &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTHOME'});
1359 my $sitehome = (defined $ENV{'SITEHOME'}) ? &util::downgrade_if_dos_filename($ENV{'SITEHOME'}) : undef;
1360 my $greenstonehome = &util::downgrade_if_dos_filename($ENV{'GREENSTONEHOME'});
1361
1362 @gs_paths = ($gsdlcollectdir, $gsdlcollecthome, $sitehome, $greenstonehome); # order matters
1363
1364 %placeholder_map = ($greenstonehome => '@GSDLHOME@', # can't use double-quotes around at-sign, else perl tries to evaluate it as referring to an array
1365 $gsdlcollecthome => '@COLLECTHOME@',
1366 $gsdlcollectdir => '@THISCOLLECTPATH@'
1367 );
1368 $placeholder_map{$sitehome} = '@SITEHOME@' if defined $sitehome;
1369
1370 $path = &util::_abspath_to_placeholders($path, \@gs_paths, \%placeholder_map);
1371 }
1372
1373 return $path;
1374}
1375
1376sub _abspath_to_placeholders {
1377 my ($path, $gs_paths_ref, $placeholder_map_ref) = @_;
1378
1379 # The sequence of elements in @gs_paths matters
1380 # Need to loop starting from the *longest* matching path (the path to the specific collection)
1381 # to the shortest matching path (the path to gsdlhome/gsdl3home folder):
1382
1383 foreach my $gs_path (@$gs_paths_ref) {
1384 next if(!defined $gs_path); # site undefined for GS2
1385
1386 my $re_path = &util::filename_to_regex($gs_path); # escape for regex
1387
1388 if($path =~ m/^$re_path/i) { # case sensitive or not for OS?
1389
1390 my $placeholder = $placeholder_map_ref->{$gs_path}; # get the placeholder to replace the matched path with
1391
1392 $path =~ s/^$re_path/$placeholder/; #case sensitive or not?
1393 #$path =~ s/^[\\\/]//; # remove gs_path's trailing separator left behind at the start of the path
1394 last; # done
1395 }
1396 }
1397
1398 return $path;
1399}
1400
1401# Function that does the reverse of the util::abspath_to_placeholders subroutine
1402# Once again, call this with the values returned from util::get_common_gs_paths
1403sub placeholders_to_abspath {
1404 my $path = shift(@_); # path that can contain placeholders to convert to resolved absolute path
1405 my $opt_long_or_short_winfilenames = shift(@_) || "short"; # whether we want to force use of long file names even on windows, default uses short
1406
1407 return $path if($path !~ m/@/); # path contains no placeholders
1408
1409 # replace placeholders with gs prefixes
1410 my @placeholders = ('@THISCOLLECTPATH@', '@COLLECTHOME@', '@SITEHOME@', '@GSDLHOME@'); # order of paths not crucial in this case,
1411 # but listed here from longest to shortest once placeholders are have been resolved
1412
1413 # can't use double-quotes around at-sign, else perl tries to evaluate it as referring to an array
1414 my %placeholder_to_gspath_map;
1415 if ($ENV{'GSDLOS'} =~ /^windows$/i && $opt_long_or_short_winfilenames eq "short") {
1416 # always replace placeholders with short file names of the absolute paths on windows?
1417 %placeholder_to_gspath_map = ('@GSDLHOME@' => &util::downgrade_if_dos_filename($ENV{'GREENSTONEHOME'}),
1418 '@COLLECTHOME@' => &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTHOME'}),
1419 '@THISCOLLECTPATH@' => &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTDIR'})
1420 );
1421 $placeholder_to_gspath_map{'@SITEHOME@'} = &util::downgrade_if_dos_filename($ENV{'SITEHOME'}) if defined $ENV{'SITEHOME'};
1422 } else {
1423 %placeholder_to_gspath_map = ('@GSDLHOME@' => $ENV{'GREENSTONEHOME'},
1424 '@SITEHOME@' => $ENV{'SITEHOME'}, # can be undef
1425 '@COLLECTHOME@' => $ENV{'GSDLCOLLECTHOME'},
1426 '@THISCOLLECTPATH@' => $ENV{'GSDLCOLLECTDIR'}
1427 ); # $placeholder_to_gspath_map{'@SITEHOME@'} = $ENV{'SITEHOME'} if defined $ENV{'SITEHOME'};
1428 }
1429
1430 foreach my $placeholder (@placeholders) {
1431 my $gs_path = $placeholder_to_gspath_map{$placeholder};
1432
1433 next if(!defined $gs_path); # sitehome for GS2 is undefined
1434
1435 if($path =~ m/^$placeholder/) {
1436 $path =~ s/^$placeholder/$gs_path/;
1437 last; # done
1438 }
1439 }
1440
1441 return $path;
1442}
1443
1444# Used by pdfpstoimg.pl and PDFBoxConverter to create a .item file from
1445# a directory containing sequentially numbered images.
1446sub create_itemfile
1447{
1448 my ($output_dir, $convert_basename, $convert_to) = @_;
1449 my $page_num = "";
1450
1451 opendir(DIR, $output_dir) || die "can't opendir $output_dir: $!";
1452 my @dir_files = grep {-f "$output_dir/$_"} readdir(DIR);
1453 closedir DIR;
1454
1455 # Sort files in the directory by page_num
1456 sub page_number {
1457 my ($dir) = @_;
1458 my ($pagenum) =($dir =~ m/^.*?[-\.]?(\d+)(\.(jpg|gif|png))?$/i);
1459# my ($pagenum) =($dir =~ m/(\d+)(\.(jpg|gif|png))?$/i); # this works but is not as safe/strict about input filepatterns as the above
1460
1461 $pagenum = 1 unless defined $pagenum;
1462 return $pagenum;
1463 }
1464
1465 # sort the files in the directory in the order of page_num rather than lexically.
1466 @dir_files = sort { page_number($a) <=> page_number($b) } @dir_files;
1467
1468 # work out if the numbering of the now sorted image files starts at 0 or not
1469 # by checking the number of the first _image_ file (skipping item files)
1470 my $starts_at_0 = 0;
1471 my $firstfile = ($dir_files[0] !~ /\.item$/i) ? $dir_files[0] : $dir_files[1];
1472 if(page_number($firstfile) == 0) { # 00 will evaluate to 0 too in this condition
1473 $starts_at_0 = 1;
1474 }
1475
1476 my $item_file = &FileUtils::filenameConcatenate($output_dir, $convert_basename.".item");
1477 my $item_fh;
1478 &FileUtils::openFileHandle($item_file, 'w', \$item_fh);
1479 print $item_fh "<PagedDocument>\n";
1480
1481 foreach my $file (@dir_files){
1482 if ($file !~ /\.item/i){
1483 $page_num = page_number($file);
1484 $page_num++ if $starts_at_0; # image numbers start at 0, so add 1
1485 print $item_fh " <Page pagenum=\"$page_num\" imgfile=\"$file\" txtfile=\"\"/>\n";
1486 }
1487 }
1488
1489 print $item_fh "</PagedDocument>\n";
1490 &FileUtils::closeFileHandle($item_file, \$item_fh);
1491 return $item_file;
1492}
1493
1494
1495## @function augmentINC()
1496#
1497# Prepend a path (if it exists) onto INC but only if it isn't already in INC
1498# @param $new_path The path to add
1499# @author jmt12
1500#
1501sub augmentINC
1502{
1503 my ($new_path) = @_;
1504 my $did_add_path = 0;
1505 # might need to be replaced with FileUtils::directoryExists() call eventually
1506 if (-d $new_path)
1507 {
1508 my $did_find_path = 0;
1509 foreach my $existing_path (@INC)
1510 {
1511 if ($existing_path eq $new_path)
1512 {
1513 $did_find_path = 1;
1514 last;
1515 }
1516 }
1517 if (!$did_find_path)
1518 {
1519 unshift(@INC, $new_path);
1520 $did_add_path = 1;
1521 }
1522 }
1523 return $did_add_path;
1524}
1525## augmentINC()
1526
1527
15281;
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