projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | package DBM_Filter::null ; |
| 2 | ||
| 3 | use strict; | |
| 4 | use warnings; | |
| 5 | ||
| 6 | our $VERSION = '0.01'; | |
| 7 | ||
| 8 | sub Store | |
| 9 | { | |
| 10 | no warnings 'uninitialized'; | |
| 11 | $_ .= "\x00" ; | |
| 12 | } | |
| 13 | ||
| 14 | sub Fetch | |
| 15 | { | |
| 16 | no warnings 'uninitialized'; | |
| 17 | s/\x00$// ; | |
| 18 | } | |
| 19 | ||
| 20 | 1; | |
| 21 | ||
| 22 | __END__ | |
| 23 | ||
| 24 | =head1 DBM_Filter::null | |
| 25 | ||
| 26 | =head1 SYNOPSIS | |
| 27 | ||
| 28 | use SDBM_File; # or DB_File, or GDBM_File, or NDBM_File, or ODBM_File | |
| 29 | use DBM_Filter ; | |
| 30 | ||
| 31 | $db = tie %hash, ... | |
| 32 | $db->Filter_Push('null'); | |
| 33 | ||
| 34 | =head1 DESCRIPTION | |
| 35 | ||
| 36 | This filter ensures that all data written to the DBM file is null | |
| 37 | terminated. This is useful when you have a perl script that needs | |
| 38 | to interoperate with a DBM file that a C program also uses. A fairly | |
| 39 | common issue is for the C application to include the terminating null | |
| 40 | in a string when it writes to the DBM file. This filter will ensure that | |
| 41 | all data written to the DBM file can be read by the C application. | |
| 42 | ||
| 43 | ||
| 44 | =head1 SEE ALSO | |
| 45 | ||
| 46 | L<DBM_Filter>, L<perldbmfilter> | |
| 47 | ||
| 48 | =head1 AUTHOR | |
| 49 | ||
| 50 | Paul Marquess pmqs@cpan.org |