Commit | Line | Data |
065b45be |
1 | package DBM::Deep::Engine::Sector::Null; |
2 | |
9c7d9738 |
3 | use 5.006_000; |
065b45be |
4 | |
5 | use strict; |
6 | use warnings FATAL => 'all'; |
7 | |
8 | use DBM::Deep::Engine::Sector::Data; |
9 | our @ISA = qw( DBM::Deep::Engine::Sector::Data ); |
10 | |
11 | sub type { $_[0]{engine}->SIG_NULL } |
12 | sub data_length { 0 } |
13 | sub data { return } |
14 | |
15 | sub _init { |
16 | my $self = shift; |
17 | |
18 | my $engine = $self->engine; |
19 | |
20 | unless ( $self->offset ) { |
21 | $self->{offset} = $engine->_request_data_sector( $self->size ); |
22 | |
23 | my $string = chr(0) x $self->size; |
24 | |
25 | substr( $string, 0, 1, $self->type ); |
26 | substr( $string, $self->base_size, $engine->byte_size + 1, |
27 | pack( $engine->StP($engine->byte_size), 0 ) # Chain loc |
28 | . pack( $engine->StP(1), $self->data_length ), # Data length |
29 | ); |
30 | |
31 | $engine->storage->print_at( $self->offset, $string ); |
32 | |
33 | return; |
34 | } |
35 | } |
36 | |
37 | 1; |
38 | __END__ |