Name

last_non_null — return last non-null entry from an input consisting of null-separated fields

DESCRIPTION

The filter splits the input on a null character (\0) and returns the last non-null entry.

EXAMPLES

Example: Filter example

[perl]
  $Tag->filter({
    op   => 'last_non_null',
    body => "One\0Two\0Three\0\0\0"
  });
[/perl]

          

NOTES

AVAILABILITY

last_non_null is available in Interchange versions:

4.6.0-5.7.0 (git-head)

SOURCE

Interchange 5.7.0:

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

AUTHORS

Interchange Development Group

SEE ALSO

DocBook! Interchange!