1: #!/usr/bin/perl -w
2: #
3: # The LearningOnline Network
4: #
5: # dump_db.pl - dump a GDBM database to standard output, unescaping if asked to.
6: #
7: # $Id: dump_db.pl,v 1.1 2002/08/19 14:37:14 matthew Exp $
8: #
9: # Copyright Michigan State University Board of Trustees
10: #
11: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
12: #
13: # LON-CAPA is free software; you can redistribute it and/or modify
14: # it under the terms of the GNU General Public License as published by
15: # the Free Software Foundation; either version 2 of the License, or
16: # (at your option) any later version.
17: #
18: # LON-CAPA is distributed in the hope that it will be useful,
19: # but WITHOUT ANY WARRANTY; without even the implied warranty of
20: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21: # GNU General Public License for more details.
22: #
23: # You should have received a copy of the GNU General Public License
24: # along with LON-CAPA; if not, write to the Free Software
25: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26: #
27: # /home/httpd/html/adm/gpl.txt
28: #
29: # http://www.lon-capa.org/
30: #
31: #################################################
32: use strict;
33: use Getopt::Long;
34: use GDBM_File;
35:
36: #
37: # Options
38: my $unesc = 0;
39: my $help = 0;
40: GetOptions("unescape" => \$unesc,
41: "help" => \$help);
42:
43: #
44: # Help them out if they ask for it
45: if ($help) {
46: print <<END;
47: dump_db.pl - dump GDBM_File databases to stdout.
48: Specify the database filenames on the command line.
49: Specify --unescape to have all the keys and values unescaped from every
50: database.
51: Options:
52: --help Display this help.
53: --unescape Unescape the keys and values before printing them out.
54: Examples:
55: dump_db.pl mydata.db
56: dump_db.pl mydata.db yourdata.db ourdata.db theirdata.db
57: dump_db.pl --unescape \*db
58: END
59: exit;
60: }
61:
62: #
63: # Loop through ARGV getting files.
64: while (my $fname = shift) {
65: my %db;
66: if (! tie(%db,'GDBM_File',$fname,&GDBM_READER,0640)) {
67: warn "Unable to tie to $fname";
68: next;
69: }
70: while (my ($key,$value) = each(%db)) {
71: if ($unesc) {
72: $key = &unescape($key);
73: $value = &unescape($value);
74: }
75: print "$key = $value\n";
76: }
77: untie %db;
78: }
79: exit;
80:
81: ######################################
82: sub unescape {
83: my $str=shift;
84: $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
85: return $str;
86: }
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