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Tools to help me look at *.hist and database 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 1.1 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: }