File:
[LON-CAPA] /
loncom /
debugging_tools /
dump_db.pl
Revision
1.8:
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Wed Jul 25 17:43:34 2007 UTC (17 years, 2 months ago) by
albertel
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loncapaMITrelate_1,
language_hyphenation_merge,
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bz6209-base,
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bz5969,
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PRINT_INCOMPLETE_base,
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- properly unti non lonUsers db files
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 1.8 2007/07/25 17:43:34 albertel 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: use Data::Dumper;
36: use Storable qw(thaw);
37: use lib '/home/httpd/lib/perl/';
38: use LONCAPA;
39: use LONCAPA::Configuration;
40: use Cwd;
41:
42: #
43: # Options
44: my ($unesc,$help,$localize_times) = (0,0,0);
45: GetOptions("unescape" => \$unesc,
46: "u" => \$unesc,
47: "t" => \$localize_times,
48: "help" => \$help);
49:
50: #
51: # Help them out if they ask for it
52: if ($help) {
53: print <<END;
54: dump_db.pl - dump GDBM_File databases to stdout.
55: Specify the database filenames on the command line.
56: Specify --unescape to have all the keys and values unescaped from every
57: database.
58: Options:
59: --help Display this help.
60: --unescape Unescape the keys and values before printing them out.
61: -u Same as --unescape
62: -t Localize times when possible (human readable times)
63: Examples:
64: dump_db.pl mydata.db
65: dump_db.pl mydata.db yourdata.db ourdata.db theirdata.db
66: dump_db.pl --unescape \*db
67: END
68: exit;
69: }
70:
71: my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
72:
73: #
74: # Loop through ARGV getting files.
75: while (my $fname = shift) {
76: $fname = &Cwd::abs_path($fname);
77: my $dbref;
78: if ($fname =~ m/^\Q$perlvar{'lonUsersDir'}\E/) {
79: $dbref=&LONCAPA::locking_hash_tie($fname,&GDBM_READER());
80: } else {
81: if (tie(my %db,'GDBM_File',$fname,&GDBM_READER(),0640)) {
82: $dbref = \%db;
83: }
84: }
85:
86: if (!$dbref) {
87: warn "Unable to tie to $fname";
88: next;
89: }
90: while (my ($key,$value) = each(%$dbref)) {
91: if ($value =~ s/^__FROZEN__//) {
92: $value = thaw(&unescape($value));
93: }
94: if ($unesc) {
95: $key = &unescape($key);
96: $value = &unescape($value) if (! ref($value));
97: }
98: if ($localize_times && ! ref($value)) {
99: $value =~ s/([0-9]{10,10})/localtime($1)/ge;
100: }
101: print "$key = ".(ref($value)?Dumper($value):$value)."\n";
102: }
103: if ($fname =~ m/^\Q$perlvar{'lonUsersDir'}\E/) {
104: &LONCAPA::locking_hash_untie($dbref);
105: } else {
106: untie($dbref);
107: }
108: }
109: exit;
110:
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