root/main/trunk/greenstone2/perllib/util.pm @ 31876

Revision 31876, 62.7 KB (checked in by ak19, 2 years ago)

1. Getting the recently added util::print_env() subroutine, which has now already helped in debugging a 2nd issue, to work on Windows. Keeping the same changes for linux too. 2. Dr Bainbridge said that single quoting the string https in dictionary props files would be better.

  • Property svn:keywords set to Author Date Id Revision
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1###########################################################################
2#
3# util.pm -- various useful utilities
4# A component of the Greenstone digital library software
5# from the New Zealand Digital Library Project at the
6# University of Waikato, New Zealand.
7#
8# Copyright (C) 1999 New Zealand Digital Library Project
9#
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2 of the License, or
13# (at your option) any later version.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program; if not, write to the Free Software
22# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23#
24###########################################################################
25
26package util;
27
28use strict;
29no strict 'refs'; # make an exception so we can use variables as filehandles
30use FileUtils;
31
32use Encode;
33use Unicode::Normalize 'normalize';
34
35use File::Copy;
36use File::Basename;
37# Config for getting the perlpath in the recommended way, though it uses paths that are
38# hard-coded into the Config file that's generated upon configuring and compiling perl.
39# $^X works better in some cases to return the path to perl used to launch the script,
40# but if launched with plain "perl" (no full-path), that will be just what it returns.
41use Config;
42# New module for file related utility functions - intended as a
43# placeholder for an extension that allows a variety of different
44# filesystems (FTP, HTTP, SAMBA, WEBDav, HDFS etc)
45use FileUtils;
46
47if ($ENV{'GSDLOS'} =~ /^windows$/i) {
48    require Win32; # for working out Windows Long Filenames from Win 8.3 short filenames
49}
50
51# removes files (but not directories)
52sub rm {
53  warnings::warnif("deprecated", "util::rm() is deprecated, using FileUtils::removeFiles() instead");
54  return &FileUtils::removeFiles(@_);
55}
56
57# recursive removal
58sub filtered_rm_r {
59  warnings::warnif("deprecated", "util::filtered_rm_r() is deprecated, using FileUtils::removeFilesFiltered() instead");
60  return &FileUtils::removeFilesFiltered(@_);
61}
62
63# recursive removal
64sub rm_r {
65  warnings::warnif("deprecated", "util::rm_r() is deprecated, using FileUtils::removeFilesRecursive() instead");
66  return &FileUtils::removeFilesRecursive(@_);
67}
68
69# moves a file or a group of files
70sub mv {
71  warnings::warnif("deprecated", "util::mv() is deprecated, using FileUtils::moveFiles() instead");
72  return &FileUtils::moveFiles(@_);
73}
74
75# Move the contents of source directory into target directory
76# (as opposed to merely replacing target dir with the src dir)
77# This can overwrite any files with duplicate names in the target
78# but other files and folders in the target will continue to exist
79sub mv_dir_contents {
80  warnings::warnif("deprecated", "util::mv_dir_contents() is deprecated, using FileUtils::moveDirectoryContents() instead");
81  return &FileUtils::moveDirectoryContents(@_);
82}
83
84# copies a file or a group of files
85sub cp {
86  warnings::warnif("deprecated", "util::cp() is deprecated, using FileUtils::copyFiles() instead");
87  return &FileUtils::copyFiles(@_);
88}
89
90# recursively copies a file or group of files
91# syntax: cp_r (sourcefiles, destination directory)
92# destination must be a directory - to copy one file to
93# another use cp instead
94sub cp_r {
95  warnings::warnif("deprecated", "util::cp_r() is deprecated, using FileUtils::copyFilesrecursive() instead");
96  return &FileUtils::copyFilesRecursive(@_);
97}
98
99# recursively copies a file or group of files
100# syntax: cp_r (sourcefiles, destination directory)
101# destination must be a directory - to copy one file to
102# another use cp instead
103sub cp_r_nosvn {
104  warnings::warnif("deprecated", "util::cp_r_nosvn() is deprecated, using FileUtils::copyFilesRecursiveNoSVN() instead");
105  return &FileUtils::copyFilesRecursiveNoSVN(@_);
106}
107
108# copies a directory and its contents, excluding subdirectories, into a new directory
109sub cp_r_toplevel {
110  warnings::warnif("deprecated", "util::cp_r_toplevel() is deprecated, using FileUtils::recursiveCopyTopLevel() instead");
111  return &FileUtils::recursiveCopyTopLevel(@_);
112}
113
114sub mk_dir {
115  warnings::warnif("deprecated", "util::mk_dir() is deprecated, using FileUtils::makeDirectory() instead");
116  return &FileUtils::makeDirectory(@_);
117}
118
119# in case anyone cares - I did some testing (using perls Benchmark module)
120# on this subroutine against File::Path::mkpath (). mk_all_dir() is apparently
121# slightly faster (surprisingly) - Stefan.
122sub mk_all_dir {
123  warnings::warnif("deprecated", "util::mk_all_dir() is deprecated, using FileUtils::makeAllDirectories() instead");
124  return &FileUtils::makeAllDirectories(@_);
125}
126
127# make hard link to file if supported by OS, otherwise copy the file
128sub hard_link {
129  warnings::warnif("deprecated", "util::hard_link() is deprecated, using FileUtils::hardLink() instead");
130  return &FileUtils::hardLink(@_);
131}
132
133# make soft link to file if supported by OS, otherwise copy file
134sub soft_link {
135  warnings::warnif("deprecated", "util::soft_link() is deprecated, using FileUtils::softLink() instead");
136  return &FileUtils::softLink(@_);
137}
138
139# Primarily for filenames generated by processing
140# content of HTML files (which are mapped to UTF-8 internally)
141#
142# To turn this into an octet string that really exists on the file
143# system:
144# 1. don't need to do anything special for Unix-based systems
145#   (as underlying file system is byte-code)
146# 2. need to map to short DOS filenames for Windows
147
148sub utf8_to_real_filename
149{
150    my ($utf8_filename) = @_;
151
152    my $real_filename;
153
154    if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
155    require Win32;
156
157    my $unicode_filename = decode("utf8",$utf8_filename);
158    $real_filename = Win32::GetShortPathName($unicode_filename);
159    }
160    else {
161    $real_filename = $utf8_filename;
162    }
163
164    return $real_filename;
165}
166
167sub raw_filename_to_unicode
168{
169    my ($directory, $raw_file, $filename_encoding ) = @_;
170       
171    my $unicode_filename = $raw_file;
172    if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
173        # Try turning a short version to the long version
174        # If there are "funny" characters in the file name, that can't be represented in the ANSI code, then we will have a short weird version, eg E74~1.txt
175        $unicode_filename = &util::get_dirsep_tail(&util::upgrade_if_dos_filename(&FileUtils::filenameConcatenate($directory, $raw_file), 0));
176       
177       
178        if ($unicode_filename eq $raw_file) {
179        # This means the original filename *was* able to be encoded in the local ANSI file encoding (eg windows_1252), so now we turn it back to perl's unicode
180       
181        $unicode_filename = &Encode::decode(locale_fs => $unicode_filename);
182        }
183        # else This means we did have one of the funny filenames. the getLongPathName (used in upgrade_if_dos_filename) will return unicode, so we don't need to do anything more.
184       
185                   
186    } else {
187        # we had a utf-8 string, turn it into perl internal unicode
188        $unicode_filename = &Encode::decode("utf-8", $unicode_filename);
189   
190       
191    }
192    #Does the filename have url encoded chars in it?
193    if (&unicode::is_url_encoded($unicode_filename)) {
194        $unicode_filename = &unicode::url_decode($unicode_filename);
195    }
196   
197    # Normalise the filename to canonical composition - on mac, filenames use decopmposed form for accented chars
198    if ($ENV{'GSDLOS'} =~ m/^darwin$/i) {
199        $unicode_filename = normalize('C', $unicode_filename); # Composed form 'C'
200    }
201    return $unicode_filename;
202
203}
204sub fd_exists {
205  warnings::warnif("deprecated", "util::fd_exists() is deprecated, using FileUtils::fileTest() instead");
206  return &FileUtils::fileTest(@_);
207}
208
209sub file_exists {
210  warnings::warnif("deprecated", "util::file_exists() is deprecated, using FileUtils::fileExists() instead");
211  return &FileUtils::fileExists(@_);
212}
213
214sub dir_exists {
215  warnings::warnif("deprecated", "util::dir_exists() is deprecated, using FileUtils::directoryExists() instead");
216  return &FileUtils::directoryExists(@_);
217}
218
219# updates a copy of a directory in some other part of the filesystem
220# verbosity settings are: 0=low, 1=normal, 2=high
221# both $fromdir and $todir should be absolute paths
222sub cachedir {
223  warnings::warnif("deprecated", "util::cachedir() is deprecated, using FileUtils::synchronizeDirectories() instead");
224  return &FileUtils::synchronizeDirectories(@_);
225}
226
227# this function returns -1 if either file is not found
228# assumes that $file1 and $file2 are absolute file names or
229# in the current directory
230# $file2 is allowed to be newer than $file1
231sub differentfiles {
232  warnings::warnif("deprecated", "util::differentfiles() is deprecated, using FileUtils::differentFiles() instead");
233  return &FileUtils::differentFiles(@_);
234}
235
236
237# works out the temporary directory, including in the case where Greenstone is not writable
238# In that case, gs3-setup.bat would already have set the GS_TMP_OUTPUT_DIR temp variable
239sub determine_tmp_dir
240{
241    my $try_collect_dir = shift(@_) || 0;
242
243    my $tmp_dirname;
244    if(defined $ENV{'GS_TMP_OUTPUT_DIR'}) {
245        $tmp_dirname = $ENV{'GS_TMP_OUTPUT_DIR'};
246    } elsif($try_collect_dir && defined $ENV{'GSDLCOLLECTDIR'}) {
247        $tmp_dirname = $ENV{'GSDLCOLLECTDIR'};
248    } elsif(defined $ENV{'GSDLHOME'}) {
249        $tmp_dirname = $ENV{'GSDLHOME'};
250    } else {
251        return undef;
252    }
253   
254    if(!defined $ENV{'GS_TMP_OUTPUT_DIR'}) {
255        # test the tmp_dirname folder is writable, by trying to write out a file
256        # Unfortunately, cound not get if(-w $dirname) to work on directories on Windows
257            ## http://alvinalexander.com/blog/post/perl/perl-file-test-operators-reference-cheat-sheet (test file/dir writable)
258            ## http://www.makelinux.net/alp/083 (real and effective user IDs)
259       
260        my $tmp_test_file = &FileUtils::filenameConcatenate($tmp_dirname, "writability_test.tmp");
261        if (open (FOUT, ">$tmp_test_file")) {
262            close(FOUT);
263            &FileUtils::removeFiles($tmp_test_file);
264        } else { # location not writable, use TMP location
265        if (defined $ENV{'TMP'}) {
266            $tmp_dirname = $ENV{'TMP'};
267        } else {
268            $tmp_dirname = "/tmp";
269        }
270        $tmp_dirname = &FileUtils::filenameConcatenate($tmp_dirname, "greenstone");
271            $ENV{'GS_TMP_OUTPUT_DIR'} = $tmp_dirname; # store for next time
272        }
273    }
274   
275    $tmp_dirname = &FileUtils::filenameConcatenate($tmp_dirname, "tmp");
276    &FileUtils::makeAllDirectories ($tmp_dirname) unless -e $tmp_dirname;
277
278    return $tmp_dirname;
279}
280
281sub get_tmp_filename
282{
283    my $file_ext = shift(@_) || undef;
284
285    my $opt_dot_file_ext = "";
286    if (defined $file_ext) {
287    if ($file_ext !~ m/\./) {
288        # no dot, so needs one added in at start
289        $opt_dot_file_ext = ".$file_ext"
290    }
291    else {
292        # allow for "extensions" such as _metadata.txt to be handled
293        # gracefully
294        $opt_dot_file_ext = $file_ext;
295    }
296    }
297
298    my $tmpdir = &util::determine_tmp_dir(0);
299
300    my $count = 1000;
301    my $rand = int(rand $count);
302    my $full_tmp_filename = &FileUtils::filenameConcatenate($tmpdir, "F$rand$opt_dot_file_ext");
303
304    while (-e $full_tmp_filename) {
305    $rand = int(rand $count);
306    $full_tmp_filename = &FileUtils::filenameConcatenate($tmpdir, "F$rand$opt_dot_file_ext");
307    $count++;
308    }
309   
310    return $full_tmp_filename;
311}
312
313# These 2 are "static" variables used by the get_timestamped_tmp_folder() subroutine below and
314# belong with that function. They help ensure the timestamped tmp folders generated are unique.
315my $previous_timestamp = undef;
316my $previous_timestamp_f = 0; # frequency
317
318sub get_timestamped_tmp_folder
319{
320    my $tmp_dirname = &util::determine_tmp_dir(1);
321   
322    # add the timestamp into the path otherwise we can run into problems
323    # if documents have the same name
324    my $timestamp = time;   
325   
326    if (!defined $previous_timestamp || ($timestamp > $previous_timestamp)) {
327        $previous_timestamp_f = 0;
328        $previous_timestamp = $timestamp;
329    } else {
330        $previous_timestamp_f++;
331    }
332   
333    my $time_tmp_dirname = &FileUtils::filenameConcatenate($tmp_dirname, $timestamp);
334    $tmp_dirname = $time_tmp_dirname;   
335    my $i = $previous_timestamp_f;
336   
337    if($previous_timestamp_f > 0) {
338        $tmp_dirname = $time_tmp_dirname."_".$i;
339        $i++;
340    }
341    while (-e $tmp_dirname) {
342    $tmp_dirname = $time_tmp_dirname."_".$i;
343    $i++;
344    }
345    &FileUtils::makeDirectory($tmp_dirname);
346
347    return $tmp_dirname;
348}
349
350sub get_timestamped_tmp_filename_in_collection
351{
352
353    my ($input_filename, $output_ext) = @_;
354    # derive tmp filename from input filename
355    my ($tailname, $dirname, $suffix)
356    = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
357
358    # softlink to collection tmp dir
359    my $tmp_dirname = &util::get_timestamped_tmp_folder();
360    $tmp_dirname = $dirname unless defined $tmp_dirname;
361
362    # following two steps copied from ConvertBinaryFile
363    # do we need them?? can't use them as is, as they use plugin methods.
364
365    #$tailname = $self->SUPER::filepath_to_utf8($tailname) unless &unicode::check_is_utf8($tailname);
366
367    # URLEncode this since htmls with images where the html filename is utf8 don't seem
368    # to work on Windows (IE or Firefox), as browsers are looking for filesystem-encoded
369    # files on the filesystem.
370    #$tailname = &util::rename_file($tailname, $self->{'file_rename_method'}, "without_suffix");
371    if (defined $output_ext) {
372    $output_ext = ".$output_ext"; # add the dot
373    } else {
374    $output_ext = $suffix;
375    }
376    $output_ext= lc($output_ext);
377    my $tmp_filename = &FileUtils::filenameConcatenate($tmp_dirname, "$tailname$output_ext");
378   
379    return $tmp_filename;
380}
381
382sub get_toplevel_tmp_dir
383{
384    return &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "tmp");
385}
386
387
388sub get_collectlevel_tmp_dir
389{
390    my $tmp_dirname = &FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'}, "tmp");
391    &FileUtils::makeDirectory($tmp_dirname) if (!-e $tmp_dirname);
392
393    return $tmp_dirname;
394}
395
396sub get_parent_folder
397{
398    my ($path) = @_;
399    my ($tailname, $dirname, $suffix)
400    = &File::Basename::fileparse($path, "\\.[^\\.]+\$");
401
402    return &FileUtils::sanitizePath($dirname);
403}
404
405sub filename_to_regex {
406    my $filename = shift (@_);
407
408    # need to make single backslashes double so that regex works
409    $filename =~ s/\\/\\\\/g; # if ($ENV{'GSDLOS'} =~ /^windows$/i);   
410   
411    # note that the first part of a substitution is a regex, so RE chars need to be escaped,
412    # the second part of a substitution is not a regex, so for e.g. full-stop can be specified literally
413    $filename =~ s/\./\\./g; # in case there are extensions/other full stops, escape them
414    $filename =~ s@\(@\\(@g; # escape brackets
415    $filename =~ s@\)@\\)@g; # escape brackets
416    $filename =~ s@\[@\\[@g; # escape brackets
417    $filename =~ s@\]@\\]@g; # escape brackets
418   
419    return $filename;
420}
421
422sub unregex_filename {
423    my $filename = shift (@_);
424
425    # need to put doubled backslashes for regex back to single
426    $filename =~ s/\\\./\./g; # remove RE syntax for .
427    $filename =~ s@\\\(@(@g; # remove RE syntax for ( => "\(" turns into "("
428    $filename =~ s@\\\)@)@g; # remove RE syntax for ) => "\)" turns into ")"
429    $filename =~ s@\\\[@[@g; # remove RE syntax for [ => "\[" turns into "["
430    $filename =~ s@\\\]@]@g; # remove RE syntax for ] => "\]" turns into "]"
431   
432    # \\ goes to \
433    # This is the last step in reverse mirroring the order of steps in filename_to_regex()
434    $filename =~ s/\\\\/\\/g; # remove RE syntax for \   
435    return $filename;
436}
437
438sub filename_cat {
439  # I've disabled this warning for now, as every Greenstone perl
440  # script seems to make use of this function and so you drown in a
441  # sea of deprecated warnings [jmt12]
442#  warnings::warnif("deprecated", "util::filename_cat() is deprecated, using FileUtils::filenameConcatenate() instead");
443  return &FileUtils::filenameConcatenate(@_);
444}
445
446
447sub _pathname_cat {
448    my $join_char  = shift(@_);
449    my $first_path = shift(@_);
450    my (@pathnames) = @_;
451
452    # If first_path is not null or empty, then add it back into the list
453    if (defined $first_path && $first_path =~ /\S/) {
454    unshift(@pathnames, $first_path);
455    }
456
457    my $pathname = join($join_char, @pathnames);
458
459    # remove duplicate slashes
460    if ($join_char eq ";") {
461    $pathname =~ s/[\\\/]+/\\/g;
462    if ($^O eq "cygwin") {
463        # Once we've collapsed muliple (potentialy > 2) slashes
464        # For cygwin, actually want things double-backslahed
465        $pathname =~ s/\\/\\\\/g;
466    }
467
468    } else {
469    $pathname =~ s/[\/]+/\//g;
470    # DB: want a pathname abc\de.html to remain like this
471    }
472
473    return $pathname;
474}
475
476
477sub pathname_cat {
478    my (@pathnames) = @_;
479
480    my $join_char;
481    if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
482    $join_char = ";";
483    } else {
484    $join_char = ":";
485    }
486    return _pathname_cat($join_char,@pathnames);
487}
488
489
490sub javapathname_cat {
491    my (@pathnames) = @_;
492
493    my $join_char;
494
495    # Unlike pathname_cat() above, not interested if running in a Cygwin environment
496    # This is because the java we run is actually a native Windows executable
497
498    if (($ENV{'GSDLOS'} =~ /^windows$/i)) {
499    $join_char = ";";
500    } else {
501    $join_char = ":";
502    }
503    return _pathname_cat($join_char,@pathnames);
504}
505
506
507sub makeFilenameJavaCygwinCompatible
508{
509    my ($java_filename) = @_;
510
511    if ($^O eq "cygwin") {
512    # To be used with a Java program, but under Cygwin
513    # Because the java binary that is native to Windows, need to
514    # convert the Cygwin paths (i.e. Unix style) to be Windows
515    # compatible
516   
517    $java_filename = `cygpath -wp "$java_filename"`;
518    chomp($java_filename);
519    $java_filename =~ s%\\%\\\\%g;
520    }
521
522    return $java_filename;
523}
524
525sub tidy_up_oid {
526    my ($OID) = @_;
527    if ($OID =~ /[\.\/\\]/) {
528    print STDERR "Warning, identifier $OID contains periods or slashes(.\\\/), replacing them with _\n";
529    $OID =~ s/[\.\\\/]/_/g; #remove any periods
530    }
531    if ($OID =~ /^\s.*\s$/) {
532    print STDERR "Warning, identifier $OID starts or ends with whitespace. Removing it\n";
533    # remove starting and trailing whitespace
534    $OID =~ s/^\s+//;
535    $OID =~ s/\s+$//;
536    }
537    if ($OID =~ /^[\d]*$/) {
538    print STDERR "Warning, identifier $OID contains only digits. Prepending 'D'.\n";
539    $OID = "D" . $OID;
540    }       
541   
542    return $OID;
543}
544
545sub envvar_prepend {
546    my ($var,$val) = @_;
547
548    # 64 bit linux can't handle ";" as path separator, so make sure to set this to the right one for the OS
549##    my $pathsep = (defined $ENV{'GSDLOS'} && $ENV{'GSDLOS'} !~ m/windows/) ? ":" : ";";
550
551    # Rewritten above to make ":" the default (Windows is the special
552    # case, anything else 'unusual' such as Solaris etc is Unix)
553    my $pathsep = (defined $ENV{'GSDLOS'} && (($ENV{'GSDLOS'} =~ m/windows/) && ($^O ne "cygwin"))) ? ";" : ":";
554
555    # do not prepend any value/path that's already in the environment variable
556   
557    my $escaped_val = &filename_to_regex($val); # escape any backslashes and brackets for upcoming regex
558    if (!defined($ENV{$var})) {
559    $ENV{$var} = "$val";
560    }
561    elsif($ENV{$var} !~ m/$escaped_val/) {
562    $ENV{$var} = "$val".$pathsep.$ENV{$var};
563    }
564}
565
566sub envvar_append {
567    my ($var,$val) = @_;
568
569    # 64 bit linux can't handle ";" as path separator, so make sure to set this to the right one for the OS
570    my $pathsep = (defined $ENV{'GSDLOS'} && $ENV{'GSDLOS'} !~ m/windows/) ? ":" : ";";
571   
572    # do not append any value/path that's already in the environment variable
573
574    my $escaped_val = &filename_to_regex($val); # escape any backslashes and brackets for upcoming regex
575    if (!defined($ENV{$var})) {
576    $ENV{$var} = "$val";
577    }
578    elsif($ENV{$var} !~ m/$escaped_val/) {
579    $ENV{$var} = $ENV{$var}.$pathsep."$val";
580    }
581}
582
583# debug aid
584sub print_env {
585    my ($handle, @envvars) = @_; # print to $handle, which can be STDERR/STDOUT/file, etc.
586   
587    if (scalar(@envvars) == 0) {
588        #print $handle "@@@ All env vars requested\n";   
589       
590        my $output = "";
591
592        print $handle "@@@ Environment was:\n********\n";       
593        foreach my $envvar (sort keys(%ENV)) {
594            if(defined $ENV{$envvar}) {
595                print $handle "\t$envvar = $ENV{$envvar}\n";
596            } else {
597            print $handle "\t$envvar = \n";
598            }   
599        }
600        print $handle "********\n";
601    } else {
602    print $handle "@@@ Environment was:\n********\n";
603    foreach my $envvar (@envvars) {
604        if(defined $ENV{$envvar}) {
605        print $handle "\t$envvar = ".$ENV{$envvar}."\n";
606        } else {       
607            print $handle "Env var '$envvar' was not set\n";       
608        }
609    }
610    print $handle "********\n";
611    }
612}
613
614
615# splits a filename into a prefix and a tail extension using the tail_re, or
616# if that fails, splits on the file_extension . (dot)
617sub get_prefix_and_tail_by_regex {
618
619    my ($filename,$tail_re) = @_;
620   
621    my ($file_prefix,$file_ext) = ($filename =~ m/^(.*?)($tail_re)$/);
622    if ((!defined $file_prefix) || (!defined $file_ext)) {
623    ($file_prefix,$file_ext) = ($filename =~ m/^(.*)(\..*?)$/);
624    }
625
626    return ($file_prefix,$file_ext);
627}
628
629# get full path and file only path from a base_dir (which may be empty) and
630# file (which may contain directories)
631sub get_full_filenames {
632    my ($base_dir, $file) = @_;
633   
634#    my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(0);
635#    my ($lcfilename) = ($cfilename =~ m/([^\\\/]*)$/);
636#    print STDERR "** Calling method: $lcfilename:$cline $cpackage->$csubr\n";
637
638
639    my $filename_full_path = $file;
640    # add on directory if present
641    $filename_full_path = &FileUtils::filenameConcatenate($base_dir, $file) if $base_dir =~ /\S/;
642   
643    my $filename_no_path = $file;
644
645    # remove directory if present
646    $filename_no_path =~ s/^.*[\/\\]//;
647    return ($filename_full_path, $filename_no_path);
648}
649
650# returns the path of a file without the filename -- ie. the directory the file is in
651sub filename_head {
652    my $filename = shift(@_);
653
654    if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
655    $filename =~ s/[^\\\\]*$//;
656    }
657    else {
658    $filename =~ s/[^\\\/]*$//;
659    }
660
661    return $filename;
662}
663
664
665
666# returns 1 if filename1 and filename2 point to the same
667# file or directory
668sub filenames_equal {
669    my ($filename1, $filename2) = @_;
670
671    # use filename_cat to clean up trailing slashes and
672    # multiple slashes
673    $filename1 = &FileUtils::filenameConcatenate($filename1);
674    $filename2 = &FileUtils::filenameConcatenate($filename2);
675
676    # filenames not case sensitive on windows
677    if ($ENV{'GSDLOS'} =~ /^windows$/i) {
678    $filename1 =~ tr/[A-Z]/[a-z]/;
679    $filename2 =~ tr/[A-Z]/[a-z]/;
680    }
681    return 1 if $filename1 eq $filename2;
682    return 0;
683}
684
685# If filename is relative to within_dir, returns the relative path of filename to that directory
686# with slashes in the filename returned as they were in the original (absolute) filename.
687sub filename_within_directory
688{
689    my ($filename,$within_dir) = @_;
690   
691    if ($within_dir !~ m/[\/\\]$/) {
692    my $dirsep = &util::get_dirsep();
693    $within_dir .= $dirsep;
694    }
695   
696    $within_dir = &filename_to_regex($within_dir); # escape DOS style file separator and brackets   
697    if ($filename =~ m/^$within_dir(.*)$/) {
698    $filename = $1;
699    }
700   
701    return $filename;
702}
703
704# If filename is relative to within_dir, returns the relative path of filename to that directory in URL format.
705# Filename and within_dir can be any type of slashes, but will be compared as URLs (i.e. unix-style slashes).
706# The subpath returned will also be a URL type filename.
707sub filename_within_directory_url_format
708{
709    my ($filename,$within_dir) = @_;
710   
711    # convert parameters only to / slashes if Windows
712   
713    my $filename_urlformat = &filepath_to_url_format($filename);
714    my $within_dir_urlformat = &filepath_to_url_format($within_dir);
715
716    #if ($within_dir_urlformat !~ m/\/$/) {
717        # make sure directory ends with a slash
718        #$within_dir_urlformat .= "/";
719    #}
720   
721    my $within_dir_urlformat_re = &filename_to_regex($within_dir_urlformat); # escape any special RE characters, such as brackets
722   
723    #print STDERR "@@@@@ $filename_urlformat =~ $within_dir_urlformat_re\n";
724   
725    # dir prefix may or may not end with a slash (this is discarded when extracting the sub-filepath)
726    if ($filename_urlformat =~ m/^$within_dir_urlformat_re(?:\/)*(.*)$/) {
727        $filename_urlformat = $1;
728    }
729   
730    return $filename_urlformat;
731}
732
733# Convert parameter to use / slashes if Windows (if on Linux leave any \ as is,
734# since on Linux it doesn't represent a file separator but an escape char).
735sub filepath_to_url_format
736{
737    my ($filepath) = @_;
738    if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
739        # Only need to worry about Windows, as Unix style directories already in url-format
740        # Convert Windows style \ => /
741        $filepath =~ s@\\@/@g;     
742    }
743    return $filepath;
744}
745
746# regex filepaths on windows may include \\ as path separator. Convert \\ to /
747sub filepath_regex_to_url_format
748{
749    my ($filepath) = @_;
750    if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
751    # Only need to worry about Windows, as Unix style directories already in url-format
752    # Convert Windows style \\ => /
753    $filepath =~ s@\\\\@/@g;       
754    }
755    return $filepath;
756   
757}
758
759# Like File::Basename::fileparse, but expects filepath in url format (ie only / slash for dirsep)
760# and ignores trailing /
761# returns (file, dirs) dirs will be empty if no subdirs
762sub url_fileparse
763{
764    my ($filepath) = @_;
765    # remove trailing /
766    $filepath =~ s@/$@@;
767    if ($filepath !~ m@/@) {
768    return ($filepath, "");
769    }
770    my ($dirs, $file) = $filepath =~ m@(.+/)([^/]+)@;
771    return ($file, $dirs);
772   
773}
774
775
776sub filename_within_collection
777{
778    my ($filename) = @_;
779
780    my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
781   
782    if (defined $collect_dir) {
783
784    # if from within GSDLCOLLECTDIR, then remove directory prefix
785    # so source_filename is realative to it.  This is done to aid
786    # portability, i.e. the collection can be moved to somewhere
787    # else on the file system and the archives directory will still
788    # work.  This is needed, for example in the applet version of
789    # GLI where GSDLHOME/collect on the server will be different to
790    # the collect directory of the remove user.  Of course,
791    # GSDLCOLLECTDIR subsequently needs to be put back on to turn
792    # it back into a full pathname.
793
794    $filename = filename_within_directory($filename,$collect_dir);
795    }
796   
797    return $filename;
798}
799
800sub prettyprint_file
801{
802    my ($base_dir,$file,$gli) = @_;
803
804    my $filename_full_path = &FileUtils::filenameConcatenate($base_dir,$file);
805
806    if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
807    require Win32;
808
809    # For some reason base_dir in the form c:/a/b/c
810    # This leads to confusion later on, so turn it back into
811    # the more usual Windows form
812    $base_dir =~ s/\//\\/g;
813    my $long_base_dir = Win32::GetLongPathName($base_dir);
814    my $long_full_path = Win32::GetLongPathName($filename_full_path);
815
816    $file = filename_within_directory($long_full_path,$long_base_dir);
817    $file = encode("utf8",$file) if ($gli);
818    }
819
820    return $file;
821}
822
823
824sub upgrade_if_dos_filename
825{
826    my ($filename_full_path,$and_encode) = @_;
827
828    if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
829    # Ensure any DOS-like filename, such as test~1.txt, has been upgraded
830    # to its long (Windows) version
831    my $long_filename = Win32::GetLongPathName($filename_full_path);
832    if (defined $long_filename) {
833       
834        $filename_full_path = $long_filename;
835    }
836    # Make sure initial drive letter is lower-case (to fit in with rest of Greenstone)
837    $filename_full_path =~ s/^(.):/\u$1:/;
838   
839    if ((defined $and_encode) && ($and_encode)) {
840        $filename_full_path = encode("utf8",$filename_full_path);
841    }
842    }
843
844    return $filename_full_path;
845}
846
847
848sub downgrade_if_dos_filename
849{
850    my ($filename_full_path) = @_;
851
852    if (($ENV{'GSDLOS'} =~ m/^windows$/i) && ($^O ne "cygwin")) {
853    require Win32;
854
855    # Ensure the given long Windows filename is in a form that can
856    # be opened by Perl => convert it to a short DOS-like filename
857
858    my $short_filename = Win32::GetShortPathName($filename_full_path);
859    if (defined $short_filename) {
860        $filename_full_path = $short_filename;
861    }
862    # Make sure initial drive letter is lower-case (to fit in
863    # with rest of Greenstone)
864    $filename_full_path =~ s/^(.):/\u$1:/;
865    }
866
867    return $filename_full_path;
868}
869
870
871sub filename_is_absolute
872{
873  warnings::warnif("deprecated", "util::filename_is_absolute() is deprecated, using FileUtils::isFilenameAbsolute() instead");
874  return &FileUtils::isFilenameAbsolute(@_);
875}
876
877
878## @method make_absolute()
879#
880#  Ensure the given file path is absolute in respect to the given base path.
881#
882#  @param  $base_dir A string denoting the base path the given dir must be
883#                    absolute to.
884#  @param  $dir The directory to be made absolute as a string. Note that the
885#               dir may already be absolute, in which case it will remain
886#               unchanged.
887#  @return The now absolute form of the directory as a string.
888#
889#  @author John Thompson, DL Consulting Ltd.
890#  @copy 2006 DL Consulting Ltd.
891#
892#used in buildcol.pl, doesn't work for all cases --kjdon
893sub make_absolute {
894   
895    my ($base_dir, $dir) = @_;
896###    print STDERR "dir = $dir\n";
897    $dir =~ s/[\\\/]+/\//g;
898    $dir = $base_dir . "/$dir" unless ($dir =~ m|^(\w:)?/|);
899    $dir =~ s|^/tmp_mnt||;
900    1 while($dir =~ s|/[^/]*/\.\./|/|g);
901    $dir =~ s|/[.][.]?/|/|g;
902    $dir =~ tr|/|/|s;
903###    print STDERR "dir = $dir\n";
904   
905    return $dir;
906}
907## make_absolute() ##
908
909sub get_dirsep {
910
911    if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
912    return "\\";
913    } else {
914    return "\/";
915    }
916}
917
918sub get_os_dirsep {
919
920    if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin")) {
921    return "\\\\";
922    } else {
923    return "\\\/";
924    }
925}
926
927sub get_re_dirsep {
928
929    return "\\\\|\\\/";
930}
931
932
933sub get_dirsep_tail {
934    my ($filename) = @_;
935   
936    # returns last part of directory or filename
937    # On unix e.g. a/b.d => b.d
938    #              a/b/c => c
939
940    my $dirsep = get_re_dirsep();
941    my @dirs = split (/$dirsep/, $filename);
942    my $tail = pop @dirs;
943
944    # - caused problems under windows
945    #my ($tail) = ($filename =~ m/^(?:.*?$dirsep)?(.*?)$/);
946
947    return $tail;
948}
949
950
951# if this is running on windows we want binaries to end in
952# .exe, otherwise they don't have to end in any extension
953sub get_os_exe {
954    return ".exe" if (($ENV{'GSDLOS'} =~ /^windows$/i) && ($^O ne "cygwin"));
955    return "";
956}
957
958
959# test to see whether this is a big or little endian machine
960sub is_little_endian
961{
962    # To determine the name of the operating system, the variable $^O is a cheap alternative to pulling it out of the Config module;
963    # 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
964    # Otherwise, it's little endian
965
966    #return 0 if $^O =~ /^darwin$/i;
967    #return 0 if $ENV{'GSDLOS'} =~ /^darwin$/i;
968   
969    # Going back to stating exactly whether the machine is little endian
970    # or big endian, without any special case for Macs. Since for rata it comes
971    # back with little endian and for shuttle with bigendian.
972    return (ord(substr(pack("s",1), 0, 1)) == 1);
973}
974
975
976# will return the collection name if successful, "" otherwise
977sub use_collection {
978    my ($collection, $collectdir) = @_;
979
980    if (!defined $collectdir || $collectdir eq "") {
981    $collectdir = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "collect");
982    }
983
984    if (!defined $ENV{'GREENSTONEHOME'}) { # for GS3, would have been defined in use_site_collection, to GSDL3HOME
985     $ENV{'GREENSTONEHOME'} = $ENV{'GSDLHOME'};
986    }
987
988    # get and check the collection
989    if (!defined($collection) || $collection eq "") {
990    if (defined $ENV{'GSDLCOLLECTION'}) {
991        $collection = $ENV{'GSDLCOLLECTION'};
992    } else {
993        print STDOUT "No collection specified\n";
994        return "";
995    }
996    }
997   
998    if ($collection eq "modelcol") {
999    print STDOUT "You can't use modelcol.\n";
1000    return "";
1001    }
1002
1003    # make sure the environment variables GSDLCOLLECTION and GSDLCOLLECTDIR
1004    # are defined
1005    $ENV{'GSDLCOLLECTION'} = $collection;
1006    $ENV{'GSDLCOLLECTHOME'} = $collectdir;
1007    $ENV{'GSDLCOLLECTDIR'} = &FileUtils::filenameConcatenate($collectdir, $collection);
1008
1009    # make sure this collection exists
1010    if (!-e $ENV{'GSDLCOLLECTDIR'}) {
1011    print STDOUT "Invalid collection ($collection).\n";
1012    return "";
1013    }
1014
1015    # everything is ready to go
1016    return $collection;
1017}
1018
1019sub get_current_collection_name {
1020    return $ENV{'GSDLCOLLECTION'};
1021}
1022
1023
1024# will return the collection name if successful, "" otherwise. 
1025# Like use_collection (above) but for greenstone 3 (taking account of site level)
1026
1027sub use_site_collection {
1028    my ($site, $collection, $collectdir) = @_;
1029
1030    if (!defined $collectdir || $collectdir eq "") {
1031    die "GSDL3HOME not set.\n" unless defined $ENV{'GSDL3HOME'};
1032    $collectdir = &FileUtils::filenameConcatenate($ENV{'GSDL3HOME'}, "sites", $site, "collect");
1033    }
1034
1035    if (defined $ENV{'GSDL3HOME'}) {
1036    $ENV{'GREENSTONEHOME'} = $ENV{'GSDL3HOME'};     
1037    $ENV{'SITEHOME'} = &FileUtils::filenameConcatenate($ENV{'GREENSTONEHOME'}, "sites", $site);
1038    } elsif (defined $ENV{'GSDL3SRCHOME'}) {
1039    $ENV{'GREENSTONEHOME'} = &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'}, "web"); 
1040    $ENV{'SITEHOME'} = &FileUtils::filenameConcatenate($ENV{'GREENSTONEHOME'}, "sites", $site);
1041    } else {
1042    print STDERR "*** util::use_site_collection(). Warning: Neither GSDL3HOME nor GSDL3SRCHOME set.\n";
1043    }
1044
1045    # collectdir explicitly set by this point (using $site variable if required).
1046    # Can call "old" gsdl2 use_collection now.
1047
1048    return use_collection($collection,$collectdir);
1049}
1050
1051
1052
1053sub locate_config_file
1054{
1055    my ($file) = @_;
1056
1057    my $locations = locate_config_files($file);
1058
1059    return shift @$locations; # returns undef if 'locations' is empty
1060}
1061
1062
1063sub locate_config_files
1064{
1065    my ($file) = @_;
1066
1067    my @locations = ();
1068
1069    if (-e $file) {
1070    # Clearly specified (most likely full filename)
1071    # No need to hunt in 'etc' directories, return value unchanged
1072    push(@locations,$file);
1073    }
1074    else {
1075    # Check for collection specific one before looking in global GSDL 'etc'
1076    if (defined $ENV{'GSDLCOLLECTDIR'} && $ENV{'GSDLCOLLECTDIR'} ne "") {
1077        my $test_collect_etc_filename
1078        = &FileUtils::filenameConcatenate($ENV{'GSDLCOLLECTDIR'},"etc", $file);
1079       
1080        if (-e $test_collect_etc_filename) {
1081        push(@locations,$test_collect_etc_filename);
1082        }
1083    }
1084    my $test_main_etc_filename
1085        = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"etc", $file);
1086    if (-e $test_main_etc_filename) {
1087        push(@locations,$test_main_etc_filename);
1088    }
1089    }
1090
1091    return \@locations;
1092}
1093
1094
1095sub hyperlink_text
1096{
1097    my ($text) = @_;
1098   
1099    $text =~ s/(http:\/\/[^\s]+)/<a href=\"$1\">$1<\/a>/mg;
1100    $text =~ s/(^|\s+)(www\.(\w|\.)+)/<a href=\"http:\/\/$2\">$2<\/a>/mg;
1101
1102    return $text;
1103}
1104
1105
1106# A method to check if a directory is empty (note that an empty directory still has non-zero size!!!)
1107# Code is from http://episteme.arstechnica.com/eve/forums/a/tpc/f/6330927813/m/436007700831
1108sub is_dir_empty {
1109  warnings::warnif("deprecated", "util::is_dir_empty() is deprecated, using FileUtils::isDirectoryEmpty() instead");
1110  return &FileUtils::isDirectoryEmpty(@_);
1111}
1112
1113# Returns the given filename converted using either URL encoding or base64
1114# encoding, as specified by $rename_method. If the given filename has no suffix
1115# (if it is just the tailname), then $no_suffix should be some defined value.
1116# rename_method can be url, none, base64
1117sub rename_file {
1118    my ($filename, $rename_method, $no_suffix)  = @_;
1119
1120    if(!$filename) { # undefined or empty string
1121    return $filename;
1122    }
1123
1124    if (!$rename_method) {
1125    print STDERR "WARNING: no file renaming method specified. Defaulting to using URL encoding...\n";
1126    # Debugging information
1127    # my ($cpackage,$cfilename,$cline,$csubr,$chas_args,$cwantarray) = caller(1);
1128    # print STDERR "Called from method: $cfilename:$cline $cpackage->$csubr\n";
1129    $rename_method = "url";
1130    } elsif($rename_method eq "none") {
1131    return $filename; # would have already been renamed
1132    }
1133
1134    # No longer replace spaces with underscores, since underscores mess with incremental rebuild
1135    ### Replace spaces with underscore. Do this first else it can go wrong below when getting tailname
1136    ###$filename =~ s/ /_/g;
1137
1138    my ($tailname,$dirname,$suffix);
1139    if($no_suffix) { # given a tailname, no suffix
1140    ($tailname,$dirname) = File::Basename::fileparse($filename);
1141    }
1142    else {
1143    ($tailname,$dirname,$suffix) = File::Basename::fileparse($filename, "\\.(?:[^\\.]+?)\$");
1144    }
1145    if (!$suffix) {
1146    $suffix = "";
1147    }
1148    # This breaks GLI matching extracted metadata to files in Enrich panel, as
1149    # original is eg .JPG while gsdlsourcefilename ends up .jpg
1150    # Not sure why it was done in first place...
1151    #else {
1152    #$suffix = lc($suffix);
1153    #}
1154
1155    if ($rename_method eq "url") {
1156    $tailname = &unicode::url_encode($tailname);
1157    }
1158    elsif ($rename_method eq "base64") {
1159    $tailname = &unicode::base64_encode($tailname);
1160    $tailname =~ s/\s*//sg;      # for some reason it adds spaces not just at end but also in middle
1161    }
1162
1163    $filename = "$tailname$suffix";
1164    $filename = "$dirname$filename" if ($dirname ne "./" && $dirname ne ".\\");
1165
1166    return $filename;
1167}
1168
1169
1170# BACKWARDS COMPATIBILITY: Just in case there are old .ldb/.bdb files
1171sub rename_ldb_or_bdb_file {
1172    my ($filename_no_ext) = @_;
1173
1174    my $new_filename = "$filename_no_ext.gdb";
1175    return if (-f $new_filename); # if the file has the right extension, don't need to do anything
1176    # try ldb
1177    my $old_filename = "$filename_no_ext.ldb";
1178   
1179    if (-f $old_filename) {
1180    print STDERR "Renaming $old_filename to $new_filename\n";
1181    rename ($old_filename, $new_filename)
1182        || print STDERR "Rename failed: $!\n";
1183    return;
1184    }
1185    # try bdb
1186    $old_filename = "$filename_no_ext.bdb";
1187    if (-f $old_filename) {
1188    print STDERR "Renaming $old_filename to $new_filename\n";   
1189    rename ($old_filename, $new_filename)
1190        || print STDERR "Rename failed: $!\n";
1191    return;
1192    }
1193}
1194
1195sub os_dir() {
1196   
1197    my $gsdlarch = "";
1198    if(defined $ENV{'GSDLARCH'}) {
1199    $gsdlarch = $ENV{'GSDLARCH'};
1200    }
1201    return $ENV{'GSDLOS'}.$gsdlarch;
1202}
1203
1204# returns 1 if this (GS server) is a GS3 installation, returns 0 if it's GS2.
1205sub is_gs3() {
1206    if($ENV{'GSDL3SRCHOME'}) {
1207    return 1;
1208    } else {
1209    return 0;
1210    }
1211}
1212
1213# Returns the greenstone URL prefix extracted from the appropriate GS2/GS3 config file.
1214# By default, /greenstone3 for GS3 or /greenstone for GS2.
1215sub get_greenstone_url_prefix() {
1216    # if already set on a previous occasion, just return that
1217    # (Don't want to keep repeating this: cost of re-opening and scanning files.)
1218    return $ENV{'GREENSTONE_URL_PREFIX'} if($ENV{'GREENSTONE_URL_PREFIX'});
1219
1220    my ($configfile, $urlprefix, $defaultUrlprefix);
1221    my @propertynames = ();
1222
1223    if($ENV{'GSDL3SRCHOME'}) {
1224    $defaultUrlprefix = "/greenstone3";
1225    $configfile = &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'}, "packages", "tomcat", "conf", "Catalina", "localhost", "greenstone3.xml");
1226    push(@propertynames, qw/path\s*\=/);
1227    } else {
1228    $defaultUrlprefix = "/greenstone";
1229    $configfile = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "cgi-bin", &os_dir(), "gsdlsite.cfg");
1230    push(@propertynames, (qw/\nhttpprefix/, qw/\ngwcgi/)); # inspect one property then the other
1231    }
1232
1233    $urlprefix = &extract_propvalue_from_file($configfile, \@propertynames);
1234
1235    if(!$urlprefix) { # no values found for URL prefix, use default values
1236    $urlprefix = $defaultUrlprefix;
1237    } else {
1238    #gwcgi can contain more than the wanted prefix, we split on / to get the first "directory" level
1239    $urlprefix =~ s/^\///; # remove the starting slash
1240    my @dirs = split(/(\\|\/)/, $urlprefix);
1241    $urlprefix = shift(@dirs);
1242
1243    if($urlprefix !~ m/^\//) { # in all cases: ensure the required forward slash is at the front
1244        $urlprefix = "/$urlprefix";
1245    }
1246    }
1247
1248    # set for the future
1249    $ENV{'GREENSTONE_URL_PREFIX'} = $urlprefix;
1250#    print STDERR "*** in get_greenstone_url_prefix(): $urlprefix\n\n";
1251    return $urlprefix;
1252}
1253
1254
1255
1256#
1257# The following comes from activate.pl
1258#
1259# Designed to work with a server included with GS.
1260#  - For GS3, we ask ant for the library URL.
1261#  - For GS2, we derive the URL from the llssite.cfg file.
1262
1263sub get_full_greenstone_url_prefix
1264{   
1265    my ($gs_mode, $lib_name) = @_;
1266   
1267    # if already set on a previous occasion, just return that
1268    # (Don't want to keep repeating this: cost of re-opening and scanning files.)
1269    return $ENV{'FULL_GREENSTONE_URL_PREFIX'} if($ENV{'FULL_GREENSTONE_URL_PREFIX'});
1270
1271    # set gs_mode if it was not passed in (servercontrol.pm would pass it in, any other callers won't)
1272    $gs_mode = ($ENV{'GSDL3SRCHOME'}) ? "gs3" : "gs2" unless defined $gs_mode;
1273   
1274    my $url = undef;   
1275   
1276    if($gs_mode eq "gs2") {     
1277    my $llssite_cfg = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'}, "llssite.cfg");
1278   
1279    if(-f $llssite_cfg) {
1280        # check llssite.cfg for line with url property
1281        # for server.exe also need to use portnumber and enterlib properties           
1282       
1283        # Read in the entire contents of the file in one hit
1284        if (!open (FIN, $llssite_cfg)) {
1285        print STDERR "util::get_full_greenstone_url_prefix() failed to open $llssite_cfg ($!)\n";
1286        return undef;
1287        }
1288       
1289        my $contents;
1290        sysread(FIN, $contents, -s FIN);           
1291        close(FIN);
1292       
1293        my @lines = split(/[\n\r]+/, $contents); # split on carriage-returns and/or linefeeds
1294        my $enterlib = "";
1295        my $portnumber = "8282"; # will remain empty (implicit port 80) unless it's specifically been assigned
1296       
1297        foreach my $line (@lines) {             
1298        if($line =~ m/^url=(.*)$/) {
1299            $url = $1;                 
1300        } elsif($line =~ m/^enterlib=(.*)$/) {
1301            $enterlib = $1;                 
1302        } elsif($line =~ m/^portnumber=(.*)$/) {
1303            $portnumber = $1;                   
1304        }   
1305        }
1306       
1307        if(!$url) {
1308        return undef;
1309        }
1310        elsif($url eq "URL_pending") { # library is not running
1311        # do not process url=URL_pending in the file, since for server.exe
1312        # this just means the Enter Library button hasn't been pressed yet             
1313        $url = undef;
1314        }
1315        else {
1316        # In the case of server.exe, need to do extra work to get the proper URL
1317        # But first, need to know whether we're indeed dealing with server.exe:
1318       
1319        # compare the URL's domain to the full URL
1320        # E.g. for http://localhost:8383/greenstone3/cgi-bin, the domain is localhost:8383
1321        my $uri = URI->new( $url );
1322        my $host = $uri->host;
1323        #print STDERR "@@@@@ host: $host\n";
1324        if($url =~ m/https?:\/\/$host(\/)?$/) {
1325            #if($url !~ m/https?:\/\/$host:$portnumber(\/)?/ || $url =~ m/https?:\/\/$host(\/)?$/) {
1326            # (if the URL does not contain the portnumber, OR if the port is implicitly 80 and)                 
1327            # If the domain with http:// prefix is completely the same as the URL, assume server.exe
1328            # then the actual URL is the result of suffixing the port and enterlib properties in llssite.cfg
1329            $url = $url.":".$portnumber.$enterlib;         
1330        } # else, apache web server         
1331       
1332        }           
1333    }
1334    } elsif($gs_mode eq "gs3") {
1335    # Either check build.properties for tomcat.server, tomcat.port and app.name (and default servlet name).
1336    # app.name is stored in app.path by build.xml. Need to move app.name in build.properties from build.xml
1337   
1338    # Or, run the new target get-default-servlet-url
1339    # the output can look like:
1340    #
1341    # Buildfile: build.xml
1342    #   [echo] os.name: Windows Vista
1343    #
1344    # get-default-servlet-url:
1345    #   [echo] http://localhost:8383/greenstone3/library
1346    # BUILD SUCCESSFUL
1347    # Total time: 0 seconds
1348   
1349    #my $output = qx/ant get-default-servlet-url/; # backtick operator, to get STDOUT (else 2>&1)
1350    # - see http://stackoverflow.com/questions/799968/whats-the-difference-between-perls-backticks-system-and-exec
1351   
1352    # The get-default-servlet-url ant target can be run from anywhere by specifying the
1353    # location of GS3's ant build.xml buildfile. Activate.pl can be run from anywhere for GS3
1354    # GSDL3SRCHOME will be set for GS3 by gs3-setup.sh, a step that would have been necessary
1355    # to run the activate.pl script in the first place
1356   
1357    my $full_build_xml = &FileUtils::javaFilenameConcatenate($ENV{'GSDL3SRCHOME'},"build.xml");
1358
1359    my $perl_command = "ant -buildfile \"$full_build_xml\" get-default-servlet-url";
1360   
1361    if (open(PIN, "$perl_command |")) {
1362        while (defined (my $perl_output_line = <PIN>)) {
1363
1364        if($perl_output_line =~ m@(https?):\/\/(\S*)@) { # grab all the non-whitespace chars
1365            $url="$1://".$2; # preserve the http protocol #$url="http://".$1;
1366        }
1367        }
1368        close(PIN);
1369       
1370        if (defined $lib_name) { # url won't be undef now
1371            # replace the servlet_name portion of the url found, with the given library_name
1372            $url =~ s@/[^/]*$@/$lib_name@;
1373        }
1374    } else {
1375        print STDERR "util::get_full_greenstone_url_prefix() failed to run $perl_command to work out library URL for $gs_mode\n";
1376    }
1377    }
1378   
1379    # either the url is still undef or it is now set
1380    #print STDERR "\n@@@@@ final URL:|$url|\n" if $url;     
1381    #print STDERR "\n@@@@@ URL still undef\n" if !$url;
1382
1383    $ENV{'FULL_GREENSTONE_URL_PREFIX'} = $url;
1384
1385    return $url;
1386}
1387
1388
1389# Given a config file (xml or java properties file) and a list/array of regular expressions
1390# that represent property names to match on, this function will return the value for the 1st
1391# matching property name. If the return value is undefined, no matching property was found.
1392sub extract_propvalue_from_file() {
1393    my ($configfile, $propertynames) = @_;
1394
1395    my $value;
1396    unless(open(FIN, "<$configfile")) {
1397    print STDERR "extract_propvalue_from_file(): Unable to open $configfile. $!\n";
1398    return $value; # not initialised
1399    }
1400
1401    # Read the entire file at once, as one single line, then close it
1402    my $filecontents;
1403    {
1404    local $/ = undef;       
1405    $filecontents = <FIN>;
1406    }
1407    close(FIN);
1408
1409    foreach my $regex (@$propertynames) {
1410        ($value) = $filecontents=~ m/$regex\s*(\S*)/s; # read value of the property given by regex up to the 1st space
1411    if($value) {
1412            $value =~ s/^\"//;     # remove any startquotes
1413        $value =~ s/\".*$//;   # remove the 1st endquotes (if any) followed by any xml
1414        last;              # found value for a matching property, break from loop
1415    }
1416    }
1417
1418    return $value;
1419}
1420
1421# Subroutine that sources setup.bash, given GSDLHOME and GSDLOS and
1422# given that perllib is in @INC in order to invoke this subroutine.
1423# Call as follows -- after setting up INC to include perllib and
1424# after setting up GSDLHOME and GSDLOS:
1425#
1426# require util;
1427# &util::setup_greenstone_env($ENV{'GSDLHOME'}, $ENV{'GSDLOS'});
1428#
1429sub setup_greenstone_env() {
1430    my ($GSDLHOME, $GSDLOS) = @_;
1431
1432    #my %env_map = ();
1433    # Get the localised ENV settings of running a localised source setup.bash
1434    # and put it into the ENV here. Need to clear GSDLHOME before running setup
1435    #my $perl_command = "(cd $GSDLHOME; export GSDLHOME=; . ./setup.bash > /dev/null; env)";
1436    my $perl_command = "(cd $GSDLHOME; /bin/bash -c \"export GSDLHOME=; source setup.bash > /dev/null; env\")";     
1437    if (($GSDLOS =~ m/windows/i) && ($^O ne "cygwin"))  {
1438        #$perl_command = "cmd /C \"cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set\"";
1439        $perl_command = "(cd $GSDLHOME&& set GSDLHOME=&& setup.bat > nul&& set)";
1440    }
1441    if (!open(PIN, "$perl_command |")) {
1442        print STDERR ("Unable to execute command: $perl_command. $!\n");
1443    }
1444
1445    my $lastkey;
1446    while (defined (my $perl_output_line = <PIN>)) {
1447        my($key,$value) = ($perl_output_line =~ m/^([^=]*)[=](.*)$/);
1448        if(defined $key) {
1449            #$env_map{$key}=$value;     
1450            $ENV{$key}=$value;
1451            $lastkey = $key;
1452        } elsif($lastkey && $perl_output_line !~ m/^\s*$/) {
1453            # there was no equals sign in $perl_output_line, so this
1454            # $perl_output_line may be a spillover from the previous
1455            $ENV{$lastkey} = $ENV{$lastkey}."\n".$perl_output_line;
1456        }
1457    }
1458    close (PIN);
1459
1460    # If any keys in $ENV don't occur in Greenstone's localised env
1461    # (stored in $env_map), delete those entries from $ENV
1462    #foreach $key (keys %ENV) {
1463    #   if(!defined $env_map{$key}) {
1464    #       print STDOUT "**** DELETING ENV KEY: $key\tVALUE: $ENV{$key}\n";
1465    #       delete $ENV{$key}; # del $ENV(key, value) pair
1466    #   }
1467    #}
1468    #undef %env_map;
1469}
1470
1471sub get_perl_exec() {   
1472    my $perl_exec = $^X; # may return just "perl"
1473   
1474    if($ENV{'PERLPATH'}) {
1475        # OR: # $perl_exec = &FileUtils::filenameConcatenate($ENV{'PERLPATH'},"perl");
1476        if (($ENV{'GSDLOS'} =~ m/windows/) && ($^O ne "cygwin")) {
1477            $perl_exec = "$ENV{'PERLPATH'}\\Perl.exe";
1478        } else {
1479            $perl_exec = "$ENV{'PERLPATH'}/perl";
1480        }
1481    } else { # no PERLPATH, use Config{perlpath} else $^X: special variables
1482        # containing the full path to the current perl executable we're using
1483        $perl_exec = $Config{perlpath}; # configured path for perl
1484        if (!-e $perl_exec) { # may not point to location on this machine
1485            $perl_exec = $^X; # may return just "perl"
1486            if($perl_exec =~ m/^perl/i) { # warn if just perl or Perl.exe
1487                print STDERR "**** WARNING: Perl exec found contains no path: $perl_exec";             
1488            }
1489        }
1490    }
1491   
1492    return $perl_exec;
1493}
1494
1495# returns the path to the java command in the JRE included with GS (if any),
1496# quoted to safeguard any spaces in this path, otherwise a simple java
1497# command is returned which assumes and will try for a system java.
1498sub get_java_command {
1499    my $java = "java";
1500    if(defined $ENV{'GSDLHOME'}) { # should be, as this script would be launched from the cmd line
1501                               # after running setup.bat or from GLI which also runs setup.bat
1502    my $java_bin = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"packages","jre","bin");
1503    if(-d $java_bin) {
1504        $java = &FileUtils::filenameConcatenate($java_bin,"java");
1505        $java = "\"".$java."\""; # quoted to preserve spaces in path
1506    }
1507    }
1508    return $java;
1509}
1510
1511
1512# Given the qualified collection name (colgroup/collection),
1513# returns the collection and colgroup parts
1514sub get_collection_parts {
1515    # http://perldoc.perl.org/File/Basename.html
1516    # my($filename, $directories, $suffix) = fileparse($path);
1517    # "$directories contains everything up to and including the last directory separator in the $path
1518    # including the volume (if applicable). The remainder of the $path is the $filename."
1519    #my ($collection, $colgroup) = &File::Basename::fileparse($qualified_collection);   
1520
1521    my $qualified_collection = shift(@_);
1522
1523    # Since activate.pl can be launched from the command-line, including by a user,
1524    # best not to assume colgroup uses URL-style slashes as would be the case with GLI
1525    # Also allow for the accidental inclusion of multiple slashes
1526    my ($colgroup, $collection) = split(/[\/\\]+/, $qualified_collection); #split('/', $qualified_collection);
1527   
1528    if(!defined $collection) {
1529        $collection = $colgroup;
1530        $colgroup = "";
1531    }
1532    return ($collection, $colgroup);
1533}
1534
1535# work out the "collectdir/collection" location
1536sub resolve_collection_dir {
1537    my ($collect_dir, $qualified_collection, $site) = @_; #, $gs_mode
1538   
1539    if (defined $ENV{'GSDLCOLLECTDIR'}) { # a predefined collection dir exists
1540        return $ENV{'GSDLCOLLECTDIR'};
1541    }
1542
1543    my ($colgroup, $collection) = &util::get_collection_parts($qualified_collection);   
1544   
1545    if (!defined $collect_dir || !$collect_dir) { # if undefined or empty string
1546        $collect_dir = &util::get_working_collect_dir($site);
1547    }
1548
1549    return &FileUtils::filenameConcatenate($collect_dir,$colgroup,$collection);
1550}
1551
1552# work out the full path to "collect" of this greenstone 2/3 installation
1553sub get_working_collect_dir {
1554    my ($site) = @_;   
1555
1556    if (defined $ENV{'GSDLCOLLECTHOME'}) { # a predefined collect dir exists
1557    return $ENV{'GSDLCOLLECTHOME'};
1558    }
1559
1560    if (defined $site && $site) { # site non-empty, so get default collect dir for GS3
1561   
1562    if (defined $ENV{'GSDL3HOME'}) {
1563        return &FileUtils::filenameConcatenate($ENV{'GSDL3HOME'},"sites",$site,"collect"); # web folder
1564    }
1565    elsif (defined $ENV{'GSDL3SRCHOME'}) {
1566        return &FileUtils::filenameConcatenate($ENV{'GSDL3SRCHOME'},"web","sites",$site,"collect");
1567    }
1568    }
1569
1570    elsif (defined $ENV{'SITEHOME'}) {
1571    return &FileUtils::filenameConcatenate($ENV{'SITEHOME'},"collect");
1572    }
1573   
1574    else { # get default collect dir for GS2
1575    return &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"collect");
1576    }
1577}
1578
1579sub is_abs_path_any_os {
1580    my ($path) = @_;
1581
1582    # We can have filenames in our DBs that were produced on other OS, so this method exists
1583    # to help identify absolute paths in such cases.
1584
1585    return 1 if($path =~ m@^/@); # full paths begin with forward slash on linux/mac
1586    return 1 if($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
1587
1588    return 0;
1589}
1590
1591
1592# This subroutine is for improving portability of Greenstone collections from one OS to another,
1593# to be used to convert absolute paths going into db files into paths with placeholders instead.
1594# This sub works with util::get_common_gs_paths and takes a path to a greenstone file and, if it's
1595# an absolute path, then it will replace the longest matching greenstone-path prefix of the given
1596# path with a placeholder to match.
1597# The Greenstone-path prefixes that can be matched are the following common Greenstone paths:
1598# the path to the current (specific) collection, the path to the general GS collect directory,
1599# the path to the site directory if GS3, else the path to the GSDLHOME/GSDL3HOME folder.
1600# The longest matching prefix will be replaced with the equivalent placeholder:
1601# @THISCOLLECTPATH@, else @COLLECTHOME@, else @SITEHOME@, else @GSDLHOME@.
1602sub abspath_to_placeholders {
1603    my $path = shift(@_); # path to convert from absolute to one with placeholders
1604    my $opt_long_or_short_winfilenames = shift(@_) || "short"; # whether we want to force use of long file names even on windows, default uses short
1605
1606    return $path unless is_abs_path_any_os($path); # path is relative
1607
1608    if ($opt_long_or_short_winfilenames eq "long") {
1609    $path = &util::upgrade_if_dos_filename($path); # will only do something on windows
1610    }
1611   
1612    # now we know we're dealing with absolute paths and have to replace gs prefixes with placeholders
1613    my @gs_paths = ($ENV{'GSDLCOLLECTDIR'}, $ENV{'GSDLCOLLECTHOME'}, $ENV{'SITEHOME'}, $ENV{'GREENSTONEHOME'}); # list in this order: from longest to shortest path
1614
1615    my %placeholder_map = ($ENV{'GREENSTONEHOME'} => '@GSDLHOME@', # can't use double-quotes around at-sign, else perl tries to evaluate it as referring to an array
1616               $ENV{'GSDLCOLLECTHOME'} => '@COLLECTHOME@',
1617               $ENV{'GSDLCOLLECTDIR'} => '@THISCOLLECTPATH@'
1618    );
1619    $placeholder_map{$ENV{'SITEHOME'}} = '@SITEHOME@' if defined $ENV{'SITEHOME'};
1620
1621    $path = &util::_abspath_to_placeholders($path, \@gs_paths, \%placeholder_map);
1622
1623    if ($ENV{'GSDLOS'} =~ /^windows$/i && $opt_long_or_short_winfilenames eq "short") {
1624    # for windows need to look for matches on short file names too
1625    # matched paths are again to be replaced with the usual placeholders
1626
1627    my $gsdlcollectdir = &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTDIR'});
1628    my $gsdlcollecthome = &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTHOME'});
1629    my $sitehome = (defined $ENV{'SITEHOME'}) ? &util::downgrade_if_dos_filename($ENV{'SITEHOME'}) : undef;
1630    my $greenstonehome =  &util::downgrade_if_dos_filename($ENV{'GREENSTONEHOME'});
1631
1632    @gs_paths = ($gsdlcollectdir, $gsdlcollecthome, $sitehome, $greenstonehome); # order matters
1633
1634    %placeholder_map = ($greenstonehome => '@GSDLHOME@', # can't use double-quotes around at-sign, else perl tries to evaluate it as referring to an array
1635                $gsdlcollecthome => '@COLLECTHOME@',
1636                $gsdlcollectdir => '@THISCOLLECTPATH@'
1637        );
1638    $placeholder_map{$sitehome} = '@SITEHOME@' if defined $sitehome;
1639
1640    $path = &util::_abspath_to_placeholders($path, \@gs_paths, \%placeholder_map);
1641    }
1642
1643    return $path;
1644}
1645
1646sub _abspath_to_placeholders {
1647    my ($path, $gs_paths_ref, $placeholder_map_ref) = @_;
1648
1649    # The sequence of elements in @gs_paths matters   
1650    # Need to loop starting from the *longest* matching path (the path to the specific collection)
1651    # to the shortest matching path (the path to gsdlhome/gsdl3home folder):
1652
1653    foreach my $gs_path (@$gs_paths_ref) {
1654    next if(!defined $gs_path); # site undefined for GS2
1655
1656    my $re_path =  &util::filename_to_regex($gs_path); # escape for regex
1657
1658    if($path =~ m/^$re_path/i) { # case sensitive or not for OS?
1659
1660        my $placeholder = $placeholder_map_ref->{$gs_path}; # get the placeholder to replace the matched path with
1661
1662        $path =~ s/^$re_path/$placeholder/; #case sensitive or not?
1663        #$path =~ s/^[\\\/]//; # remove gs_path's trailing separator left behind at the start of the path
1664        # lowercase file extension, This is needed when shortfilenames are used, as case affects alphetical ordering, which affects diffcol     
1665        $path =~ s/\.([A-Z]+)$/".".lc($1)/e;
1666        last; # done
1667    }
1668    }
1669   
1670    return $path;
1671}
1672
1673# Function that does the reverse of the util::abspath_to_placeholders subroutine
1674# Once again, call this with the values returned from util::get_common_gs_paths
1675sub placeholders_to_abspath {
1676    my $path = shift(@_); # path that can contain placeholders to convert to resolved absolute path
1677    my $opt_long_or_short_winfilenames = shift(@_) || "short"; # whether we want to force use of long file names even on windows, default uses short
1678
1679    return $path if($path !~ m/@/); # path contains no placeholders
1680   
1681    # replace placeholders with gs prefixes
1682    my @placeholders = ('@THISCOLLECTPATH@', '@COLLECTHOME@', '@SITEHOME@', '@GSDLHOME@'); # order of paths not crucial in this case,
1683                       # but listed here from longest to shortest once placeholders are have been resolved
1684
1685    # can't use double-quotes around at-sign, else perl tries to evaluate it as referring to an array
1686    my %placeholder_to_gspath_map;
1687    if ($ENV{'GSDLOS'} =~ /^windows$/i && $opt_long_or_short_winfilenames eq "short") {
1688    # always replace placeholders with short file names of the absolute paths on windows?
1689    %placeholder_to_gspath_map = ('@GSDLHOME@' => &util::downgrade_if_dos_filename($ENV{'GREENSTONEHOME'}),
1690                     '@COLLECTHOME@' => &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTHOME'}),
1691                     '@THISCOLLECTPATH@' => &util::downgrade_if_dos_filename($ENV{'GSDLCOLLECTDIR'})
1692    );
1693    $placeholder_to_gspath_map{'@SITEHOME@'} =  &util::downgrade_if_dos_filename($ENV{'SITEHOME'}) if defined $ENV{'SITEHOME'};
1694    } else {
1695    %placeholder_to_gspath_map = ('@GSDLHOME@' => $ENV{'GREENSTONEHOME'},
1696                      '@SITEHOME@' => $ENV{'SITEHOME'}, # can be undef
1697                      '@COLLECTHOME@' => $ENV{'GSDLCOLLECTHOME'},
1698                      '@THISCOLLECTPATH@' => $ENV{'GSDLCOLLECTDIR'}
1699        ); # $placeholder_to_gspath_map{'@SITEHOME@'} = $ENV{'SITEHOME'} if defined $ENV{'SITEHOME'};
1700    }
1701
1702    foreach my $placeholder (@placeholders) {
1703    my $gs_path = $placeholder_to_gspath_map{$placeholder};
1704
1705    next if(!defined $gs_path); # sitehome for GS2 is undefined
1706
1707    if($path =~ m/^$placeholder/) {
1708        $path =~ s/^$placeholder/$gs_path/;
1709        last; # done
1710    }
1711    }
1712   
1713    return $path;
1714}
1715
1716# Used by pdfpstoimg.pl and PDFBoxConverter to create a .item file from
1717# a directory containing sequentially numbered images.
1718sub create_itemfile
1719{
1720    my ($output_dir, $convert_basename, $convert_to) = @_;
1721    my $page_num = "";
1722
1723    opendir(DIR, $output_dir) || die "can't opendir $output_dir: $!";
1724    my @dir_files = grep {-f "$output_dir/$_"} readdir(DIR);
1725    closedir DIR;
1726
1727    # Sort files in the directory by page_num
1728    sub page_number {
1729    my ($dir) = @_;
1730    my ($pagenum) =($dir =~ m/^.*?[-\.]?(\d+)(\.(jpg|gif|png))?$/i);
1731#   my ($pagenum) =($dir =~ m/(\d+)(\.(jpg|gif|png))?$/i); # this works but is not as safe/strict about input filepatterns as the above
1732
1733    $pagenum = 1 unless defined $pagenum;
1734    return $pagenum;
1735    }
1736
1737    # sort the files in the directory in the order of page_num rather than lexically.
1738    @dir_files = sort { page_number($a) <=> page_number($b) } @dir_files;
1739
1740    # work out if the numbering of the now sorted image files starts at 0 or not
1741    # by checking the number of the first _image_ file (skipping item files)
1742    my $starts_at_0 = 0;
1743    my $firstfile = ($dir_files[0] !~ /\.item$/i) ? $dir_files[0] : $dir_files[1];
1744    if(page_number($firstfile) == 0) { # 00 will evaluate to 0 too in this condition
1745    $starts_at_0 = 1;
1746    }
1747
1748    my $item_file = &FileUtils::filenameConcatenate($output_dir, $convert_basename.".item");
1749    my $item_fh;
1750    &FileUtils::openFileHandle($item_file, 'w', \$item_fh);
1751    print $item_fh "<PagedDocument>\n";
1752
1753    foreach my $file (@dir_files){
1754    if ($file !~ /\.item/i){
1755        $page_num = page_number($file);
1756        $page_num++ if $starts_at_0; # image numbers start at 0, so add 1
1757        print $item_fh "   <Page pagenum=\"$page_num\" imgfile=\"$file\" txtfile=\"\"/>\n";
1758    }
1759    }
1760
1761    print $item_fh "</PagedDocument>\n";
1762    &FileUtils::closeFileHandle($item_file, \$item_fh);
1763    return $item_file;
1764}
1765
1766# Sets the gnomelib_env. Based on the logic in wvware.pl which can perhaps be replaced with a call to this function in future
1767sub set_gnomelib_env
1768{
1769    ## SET THE ENVIRONMENT AS DONE IN SETUP.BASH/BAT OF GNOME-LIB
1770    # Though this is only needed for darwin Lion at this point (and android, though that is untested)
1771
1772    my $libext = "so";
1773    if ($ENV{'GSDLOS'} =~ m/^windows$/i) {
1774    return;
1775    } elsif ($ENV{'GSDLOS'} =~ m/^darwin$/i) {
1776    $libext = "dylib";
1777    }
1778
1779    if (!defined $ENV{'GEXTGNOME'}) {
1780        ##print STDERR "@@@ Setting GEXTGNOME env\n";
1781
1782    my $gnome_dir = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"ext","gnome-lib-minimal");
1783
1784    if(! -d $gnome_dir) {
1785        $gnome_dir = &FileUtils::filenameConcatenate($ENV{'GSDLHOME'},"ext","gnome-lib");
1786
1787        if(! -d $gnome_dir) {
1788        $gnome_dir = "";
1789        }
1790    }
1791   
1792    # now set other the related env vars,
1793    # IF we've found the gnome-lib dir installed in the ext folder 
1794
1795    if ($gnome_dir ne "" && -f &FileUtils::filenameConcatenate($gnome_dir, $ENV{'GSDLOS'}, "lib", "libiconv.$libext")) {
1796        $ENV{'GEXTGNOME'} = $gnome_dir;
1797        $ENV{'GEXTGNOME_INSTALLED'}=&FileUtils::filenameConcatenate($ENV{'GEXTGNOME'}, $ENV{'GSDLOS'});
1798       
1799        my $gnomelib_bin = &FileUtils::filenameConcatenate($ENV{'GEXTGNOME_INSTALLED'}, "bin");
1800        if(-d $gnomelib_bin) { # no bin subfolder in GS binary's cutdown gnome-lib-minimal folder
1801        &util::envvar_prepend("PATH", $gnomelib_bin);
1802        }
1803
1804        # util's prepend will create LD/DYLD_LIB_PATH if it doesn't exist yet
1805        my $gextlib = &FileUtils::filenameConcatenate($ENV{'GEXTGNOME_INSTALLED'}, "lib");
1806
1807        if($ENV{'GSDLOS'} eq "linux") {
1808        &util::envvar_prepend("LD_LIBRARY_PATH", $gextlib);
1809        }
1810        elsif ($ENV{'GSDLOS'} eq "darwin") {
1811        #&util::envvar_prepend("DYLD_LIBRARY_PATH", $gextlib);
1812        &util::envvar_prepend("DYLD_FALLBACK_LIBRARY_PATH", $gextlib);
1813        }
1814    }
1815   
1816    # Above largely mimics the setup.bash of the gnome-lib-minimal.
1817    # Not doing the devel-srcpack that gnome-lib-minimal's setup.bash used to set
1818    # Not exporting GSDLEXTS variable either
1819    }
1820
1821#    print STDERR "@@@@@ GEXTGNOME: ".$ENV{'GEXTGNOME'}."\n\tINSTALL".$ENV{'GEXTGNOME_INSTALLED'}."\n";
1822#    print STDERR "\tPATH".$ENV{'PATH'}."\n";
1823#    print STDERR "\tLD_LIB_PATH".$ENV{'LD_LIBRARY_PATH'}."\n" if $ENV{'LD_LIBRARY_PATH};
1824#    print STDERR "\tDYLD_FALLBACK_LIB_PATH".$ENV{'DYLD_FALLBACK_LIBRARY_PATH'}."\n" if $ENV{'DYLD_FALLBACK_LIBRARY_PATH};
1825
1826    # if no GEXTGNOME, maybe users didn't need gnome-lib to run gnomelib/libiconv dependent binaries like hashfile, suffix, wget
1827    # (wvware is launched in a gnomelib env from its own script, but could possibly go through this script in future)
1828}
1829
1830
1831
1832## @function augmentINC()
1833#
1834#  Prepend a path (if it exists) onto INC but only if it isn't already in INC
1835#  @param $new_path The path to add
1836#  @author jmt12
1837#
1838sub augmentINC
1839{
1840  my ($new_path) = @_;
1841  my $did_add_path = 0;
1842  # might need to be replaced with FileUtils::directoryExists() call eventually
1843  if (-d $new_path)
1844  {
1845    my $did_find_path = 0;
1846    foreach my $existing_path (@INC)
1847    {
1848      if ($existing_path eq $new_path)
1849      {
1850        $did_find_path = 1;
1851        last;
1852      }
1853    }
1854    if (!$did_find_path)
1855    {
1856      unshift(@INC, $new_path);
1857      $did_add_path = 1;
1858    }
1859  }
1860  return $did_add_path;
1861}
1862## augmentINC()
1863
1864
18651;
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