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Annotation of loncom/debugging_tools/escape.pl, revision 1.1

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: #
        !             7: # $Id: dump_db.pl,v 1.1 2002/08/15 17:57:13 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: 
        !            34: #
        !            35: while (<>) {
        !            36:     chomp;
        !            37:     print &escape($_)."\n";
        !            38: }
        !            39: exit;
        !            40: 
        !            41: ######################################
        !            42: 
        !            43: sub unescape {
        !            44:     my $str=shift;
        !            45:     $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
        !            46:     return $str;
        !            47: }
        !            48: 
        !            49: sub escape {
        !            50:     my $str=shift;
        !            51:     $str =~ s/(\W)/"%".unpack('H2',$1)/eg;
        !            52:     return $str;
        !            53: }