package DBM_Filter::null ;
use strict;
use warnings;
our $VERSION = '0.03';
sub Store
{
no warnings 'uninitialized';
$_ .= "\x00" ;
}
sub Fetch
{
no warnings 'uninitialized';
s/\x00$// ;
}
1;
__END__
=head1 NAME
DBM_Filter::null - filter for DBM_Filter
=head1 SYNOPSIS
use SDBM_File; # or DB_File, GDBM_File, NDBM_File, or ODBM_File
use DBM_Filter ;
$db = tie %hash, ...
$db->Filter_Push('null');
=head1 DESCRIPTION
This filter ensures that all data written to the DBM file is null
terminated. This is useful when you have a perl script that needs
to interoperate with a DBM file that a C program also uses. A fairly
common issue is for the C application to include the terminating null
in a string when it writes to the DBM file. This filter will ensure that
all data written to the DBM file can be read by the C application.
=head1 SEE ALSO
L<DBM_Filter>, L<perldbmfilter>
=head1 AUTHOR
Paul Marquess pmqs@cpan.org
