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last_non_null — return last non-null entry from an input consisting of null-separated fields
The filter splits the input on a null character (\0)
and returns the last non-null entry.
Example: Filter example
[perl]
$Tag->filter({
op => 'last_non_null',
body => "One\0Two\0Three\0\0\0"
});
[/perl]
Example in action:
Interchange 5.9.0:
Source: code/Filter/last_non_null.filter
Lines: 21
# Copyright 2002-2007 Interchange Development Group and others
# Copyright 1996-2002 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version. See the LICENSE file for details.
#
# $Id: last_non_null.filter,v 1.4 2007-03-30 23:40:44 pajamian Exp $
CodeDef last_non_null Filter
CodeDef last_non_null Description Reverse combo
CodeDef last_non_null Routine <<EOR
sub {
my @some = reverse split /\0+/, shift;
for(@some) {
return $_ if length $_;
}
return '';
}
EOR
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