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Annotation of loncom/debugging_tools/dump_db.pl, revision 1.6

1.1       matthew     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: #
1.6     ! www         7: # $Id: dump_db.pl,v 1.5 2005/03/18 21:36:49 albertel Exp $
1.1       matthew     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;
1.4       matthew    35: use Data::Dumper;
1.5       albertel   36: use Storable qw(thaw);
1.6     ! www        37: use lib '/home/httpd/lib/perl/';
        !            38: use LONCAPA;
1.1       matthew    39: 
                     40: #
                     41: # Options
1.3       matthew    42: my ($unesc,$help,$localize_times) = (0,0,0);
1.1       matthew    43: GetOptions("unescape" => \$unesc,
1.2       matthew    44:            "u"        => \$unesc,
1.3       matthew    45:            "t"        => \$localize_times,
1.2       matthew    46:            "help"     => \$help);
1.1       matthew    47: 
                     48: #
                     49: # Help them out if they ask for it
                     50: if ($help) {
                     51:     print <<END;
                     52: dump_db.pl - dump GDBM_File databases to stdout.  
                     53: Specify the database filenames on the command line.
                     54: Specify --unescape to have all the keys and values unescaped from every
                     55: database.
                     56: Options:
                     57:    --help     Display this help.
                     58:    --unescape Unescape the keys and values before printing them out.
1.3       matthew    59:    -u        Same as --unescape
                     60:    -t        Localize times when possible (human readable times)
1.1       matthew    61: Examples: 
                     62:     dump_db.pl mydata.db
                     63:     dump_db.pl mydata.db yourdata.db ourdata.db theirdata.db
                     64:     dump_db.pl --unescape \*db
                     65: END
                     66:     exit;
                     67: }
                     68: 
                     69: #
                     70: # Loop through ARGV getting files.
                     71: while (my $fname = shift) {
1.6     ! www        72:     my $dbref=&LONCAPA::locking_hash_tie($fname,&GDBM_READER());
        !            73: 
        !            74:     if (!$dbref) {
1.1       matthew    75:         warn "Unable to tie to $fname";
                     76:         next;
                     77:     }
1.6     ! www        78:     while (my ($key,$value) = each(%$dbref)) {
1.4       matthew    79:         if ($value =~ s/^__FROZEN__//) {
                     80:             $value = thaw(&unescape($value));
                     81:         }
1.1       matthew    82:         if ($unesc) {
                     83:             $key = &unescape($key);
1.4       matthew    84:             $value = &unescape($value) if (! ref($value));
1.3       matthew    85:         }
1.4       matthew    86:         if ($localize_times && ! ref($value)) {
                     87:             $value =~ s/([0-9]{10,10})/localtime($1)/ge;
1.1       matthew    88:         }
1.4       matthew    89:         print "$key = ".(ref($value)?Dumper($value):$value)."\n";
1.1       matthew    90:     }
1.6     ! www        91:     &LONCAPA::locking_hash_untie($dbref);
1.1       matthew    92: }
                     93: exit;
                     94: