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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 | |
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26 | =head1 NAME |
27 | |
28 | DBM_Filter::compress - filter for DBM_Filter |
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29 | |
30 | =head1 SYNOPSIS |
31 | |
32 | use SDBM_File; # or DB_File, or GDBM_File, or NDBM_File, or ODBM_File |
33 | use DBM_Filter ; |
34 | |
35 | $db = tie %hash, ... |
36 | $db->Filter_Push('compress'); |
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37 | |
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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 | |