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