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* the make_user programs were erasing and then corrupting the .hist-files
* call new locking ties

    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 1.6 2006/06/19 09:36:22 www 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: 
   40: #
   41: # Options
   42: my ($unesc,$help,$localize_times) = (0,0,0);
   43: GetOptions("unescape" => \$unesc,
   44:            "u"        => \$unesc,
   45:            "t"        => \$localize_times,
   46:            "help"     => \$help);
   47: 
   48: #
   49: # Help them out if they ask for it
   50: if ($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.
   59:    -u        Same as --unescape
   60:    -t        Localize times when possible (human readable times)
   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) {
   72:     my $dbref=&LONCAPA::locking_hash_tie($fname,&GDBM_READER());
   73: 
   74:     if (!$dbref) {
   75:         warn "Unable to tie to $fname";
   76:         next;
   77:     }
   78:     while (my ($key,$value) = each(%$dbref)) {
   79:         if ($value =~ s/^__FROZEN__//) {
   80:             $value = thaw(&unescape($value));
   81:         }
   82:         if ($unesc) {
   83:             $key = &unescape($key);
   84:             $value = &unescape($value) if (! ref($value));
   85:         }
   86:         if ($localize_times && ! ref($value)) {
   87:             $value =~ s/([0-9]{10,10})/localtime($1)/ge;
   88:         }
   89:         print "$key = ".(ref($value)?Dumper($value):$value)."\n";
   90:     }
   91:     &LONCAPA::locking_hash_untie($dbref);
   92: }
   93: exit;
   94: