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