projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | package DBM_Filter::compress ; |
| 2 | ||
| 3 | use strict; | |
| 4 | use warnings; | |
| 5 | use Carp; | |
| 6 | ||
| 7 | our $VERSION = '0.01'; | |
| 8 | ||
| 9 | BEGIN | |
| 10 | { | |
| 11 | eval { require Compress::Zlib; Compress::Zlib->import() }; | |
| 12 | ||
| 13 | croak "Compress::Zlib module not found.\n" | |
| 14 | if $@; | |
| 15 | } | |
| 16 | ||
| 17 | ||
| 18 | ||
| 19 | sub Store { $_ = compress($_) } | |
| 20 | sub Fetch { $_ = uncompress($_) } | |
| 21 | ||
| 22 | 1; | |
| 23 | ||
| 24 | __END__ | |
| 25 | ||
| 26 | =head1 DBM_Filter::compress | |
| 27 | ||
| 28 | =head1 SYNOPSIS | |
| 29 | ||
| 30 | use SDBM_File; # or DB_File, or GDBM_File, or NDBM_File, or ODBM_File | |
| 31 | use DBM_Filter ; | |
| 32 | ||
| 33 | $db = tie %hash, ... | |
| 34 | $db->Filter_Push('compress'); | |
| 35 | ||
| 36 | =head1 DESCRIPTION | |
| 37 | ||
| 38 | This DBM filter will compress all data before it is written to the database | |
| 39 | and uncompressed it on reading. | |
| 40 | ||
| 41 | A fatal error will be thrown if the Compress::Zlib module is not | |
| 42 | available. | |
| 43 | ||
| 44 | =head1 SEE ALSO | |
| 45 | ||
| 46 | L<DBM_Filter>, L<perldbmfilter>, L<Compress::Zlib> | |
| 47 | ||
| 48 | =head1 AUTHOR | |
| 49 | ||
| 50 | Paul Marquess pmqs@cpan.org | |
| 51 |