root/branches/New_Config_Format-branch/gsdl/perllib/plugins/RecPlug.pm @ 1279

Revision 1279, 2.7 KB (checked in by sjboddie, 20 years ago)

merged changes to trunk into New_Config_Format branch

  • Property svn:executable set to *
  • Property svn:keywords set to Author Date Id Revision
Line 
1###########################################################################
2#
3# RecPlug.pm --
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
26# plugin which recurses through directories processing
27# each file it finds
28
29package RecPlug;
30
31use BasPlug;
32use plugin;
33use util;
34
35
36BEGIN {
37    @ISA = ('BasPlug');
38}
39
40use strict;
41
42sub new {
43    my ($class) = @_;
44    my $self = new BasPlug ("RecPlug", @_);
45
46    $self->{'exclude_tail_dirs'} = []; # empty by default
47
48    return bless $self, $class;
49}
50
51# return 1 if this class might recurse using $pluginfo
52sub is_recursive {
53    my $self = shift (@_);
54
55    return 1;
56}
57
58
59# return number of files processed, undef if can't process
60# Note that $base_dir might be "" and that $file might
61# include directories
62sub read {
63    my $self = shift (@_);
64    my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs) = @_;
65
66    foreach my $etd ( @{$self->{'exclude_tail_dirs'}} )
67    {
68    return 0 if ($file =~ m/$etd/);
69    }   
70
71    my (@dir, $subfile);
72
73    my $count = 0;
74
75    # see if this is a directory
76    my $dirname = &util::filename_cat ($base_dir, $file);
77    if (-d $dirname) {
78
79    # read all the files in the directory
80        if (!opendir (DIR, $dirname))
81        {
82            print STDERR "RecPlug: WARNING - couldn't read directory $dirname\n";
83            return;
84        }
85
86    @dir = readdir (DIR);
87    closedir (DIR);
88
89    print STDERR "RecPlug: getting directory $dirname\n";
90
91    # process each file
92    foreach $subfile (@dir) {
93        last if ($maxdocs != -1 && $count >= $maxdocs);
94
95        if ($subfile !~ /^\.\.?$/) {
96        # note: metadata is not carried on to the next level
97        $count += &plugin::read ($pluginfo, $base_dir, &util::filename_cat($file, $subfile),
98                     {}, $processor, $maxdocs);
99        }
100    }
101    return $count;
102    }
103
104    # wasn't a directory, someone else will have to process it
105    return undef;
106}
107
108
1091;
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