Return to dump_db.pl CVS log

Up to [LON-CAPA] / loncom / debugging_tools

Minor parameter change - can now specify --u instead of --unescape.

    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 1.2 2002/09/04 20:49:16 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 $help = 0;
   40: GetOptions("unescape" => \$unesc,
   41:            "u"        => \$unesc,
   42:            "help"     => \$help);
   43: 
   44: #
   45: # Help them out if they ask for it
   46: if ($help) {
   47:     print <<END;
   48: dump_db.pl - dump GDBM_File databases to stdout.  
   49: Specify the database filenames on the command line.
   50: Specify --unescape to have all the keys and values unescaped from every
   51: database.
   52: Options:
   53:    --help     Display this help.
   54:    --unescape Unescape the keys and values before printing them out.
   55:    --u        Same as --unescape
   56: Examples: 
   57:     dump_db.pl mydata.db
   58:     dump_db.pl mydata.db yourdata.db ourdata.db theirdata.db
   59:     dump_db.pl --unescape \*db
   60: END
   61:     exit;
   62: }
   63: 
   64: #
   65: # Loop through ARGV getting files.
   66: while (my $fname = shift) {
   67:     my %db;
   68:     if (! tie(%db,'GDBM_File',$fname,&GDBM_READER,0640)) {
   69:         warn "Unable to tie to $fname";
   70:         next;
   71:     }
   72:     while (my ($key,$value) = each(%db)) {
   73:         if ($unesc) {
   74:             $key = &unescape($key);
   75:             $value = &unescape($value);
   76:         }
   77:         print "$key = $value\n";
   78:     }
   79:     untie %db;
   80: }
   81: exit;
   82: 
   83: ######################################
   84: sub unescape {
   85:     my $str=shift;
   86:     $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
   87:     return $str;
   88: }