https://perl5.git.perl.org / perl5.git / blame
| Commit | Line | Data |
|---|---|---|
| 0e9b1cbd PM |
1 | package DBM_Filter::compress ; |
| 2 | ||
| 3 | use strict; | |
| 4 | use warnings; | |
| 5 | use Carp; | |
| 6 | ||
| 493efffc | 7 | our $VERSION = '0.03'; |
| 0e9b1cbd PM |
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 | ||
| b370a9eb RGS |
26 | =head1 NAME |
| 27 | ||
| 28 | DBM_Filter::compress - filter for DBM_Filter | |
| 0e9b1cbd PM |
29 | |
| 30 | =head1 SYNOPSIS | |
| 31 | ||
| 555bd962 | 32 | use SDBM_File; # or DB_File, GDBM_File, NDBM_File, ODBM_File |
| 0e9b1cbd PM |
33 | use DBM_Filter ; |
| 34 | ||
| 35 | $db = tie %hash, ... | |
| 36 | $db->Filter_Push('compress'); | |
| b370a9eb | 37 | |
| 0e9b1cbd PM |
38 | =head1 DESCRIPTION |
| 39 | ||
| 40 | This DBM filter will compress all data before it is written to the database | |
| 41 | and uncompressed it on reading. | |
| 42 | ||
| 43 | A fatal error will be thrown if the Compress::Zlib module is not | |
| 44 | available. | |
| 45 | ||
| 46 | =head1 SEE ALSO | |
| 47 | ||
| 48 | L<DBM_Filter>, L<perldbmfilter>, L<Compress::Zlib> | |
| 49 | ||
| 50 | =head1 AUTHOR | |
| 51 | ||
| 52 | Paul Marquess pmqs@cpan.org | |
| 53 |