Commit | Line | Data |
25f0751f |
1 | package IO::Compress::Adapter::Deflate ; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use bytes; |
6 | |
7 | use IO::Compress::Base::Common qw(:Status); |
8 | |
9 | use Compress::Raw::Zlib qw(Z_OK Z_FINISH MAX_WBITS) ; |
10 | our ($VERSION); |
11 | |
63ad731d |
12 | $VERSION = '2.001'; |
25f0751f |
13 | |
14 | sub mkCompObject |
15 | { |
16 | my $crc32 = shift ; |
17 | my $adler32 = shift ; |
18 | my $level = shift ; |
19 | my $strategy = shift ; |
20 | |
21 | my ($def, $status) = new Compress::Raw::Zlib::Deflate |
22 | -AppendOutput => 1, |
23 | -CRC32 => $crc32, |
24 | -ADLER32 => $adler32, |
25 | -Level => $level, |
26 | -Strategy => $strategy, |
27 | -WindowBits => - MAX_WBITS; |
28 | |
29 | return (undef, "Cannot create Deflate object: $status", $status) |
30 | if $status != Z_OK; |
31 | |
32 | return bless {'Def' => $def, |
33 | 'Error' => '', |
34 | } ; |
35 | } |
36 | |
37 | sub compr |
38 | { |
39 | my $self = shift ; |
40 | |
41 | my $def = $self->{Def}; |
42 | |
43 | my $status = $def->deflate($_[0], $_[1]) ; |
44 | $self->{ErrorNo} = $status; |
45 | |
46 | if ($status != Z_OK) |
47 | { |
48 | $self->{Error} = "Deflate Error: $status"; |
49 | return STATUS_ERROR; |
50 | } |
51 | |
52 | return STATUS_OK; |
53 | } |
54 | |
55 | sub flush |
56 | { |
57 | my $self = shift ; |
58 | |
59 | my $def = $self->{Def}; |
60 | |
61 | my $opt = $_[1] || Z_FINISH; |
62 | my $status = $def->flush($_[0], $opt); |
63 | $self->{ErrorNo} = $status; |
64 | |
65 | if ($status != Z_OK) |
66 | { |
67 | $self->{Error} = "Deflate Error: $status"; |
68 | return STATUS_ERROR; |
69 | } |
70 | |
71 | return STATUS_OK; |
72 | |
73 | } |
74 | |
75 | sub close |
76 | { |
77 | my $self = shift ; |
78 | |
79 | my $def = $self->{Def}; |
80 | |
81 | $def->flush($_[0], Z_FINISH) |
82 | if defined $def ; |
83 | } |
84 | |
85 | sub reset |
86 | { |
87 | my $self = shift ; |
88 | |
89 | my $def = $self->{Def}; |
90 | |
91 | my $status = $def->deflateReset() ; |
92 | $self->{ErrorNo} = $status; |
93 | if ($status != Z_OK) |
94 | { |
95 | $self->{Error} = "Deflate Error: $status"; |
96 | return STATUS_ERROR; |
97 | } |
98 | |
99 | return STATUS_OK; |
100 | } |
101 | |
102 | sub deflateParams |
103 | { |
104 | my $self = shift ; |
105 | |
106 | my $def = $self->{Def}; |
107 | |
108 | my $status = $def->deflateParams(@_); |
109 | $self->{ErrorNo} = $status; |
110 | if ($status != Z_OK) |
111 | { |
112 | $self->{Error} = "deflateParams Error: $status"; |
113 | return STATUS_ERROR; |
114 | } |
115 | |
116 | return STATUS_OK; |
117 | } |
118 | |
119 | |
120 | |
121 | #sub total_out |
122 | #{ |
123 | # my $self = shift ; |
124 | # $self->{Def}->total_out(); |
125 | #} |
126 | # |
127 | #sub total_in |
128 | #{ |
129 | # my $self = shift ; |
130 | # $self->{Def}->total_in(); |
131 | #} |
132 | |
133 | sub compressedBytes |
134 | { |
135 | my $self = shift ; |
136 | |
137 | $self->{Def}->compressedBytes(); |
138 | } |
139 | |
140 | sub uncompressedBytes |
141 | { |
142 | my $self = shift ; |
143 | $self->{Def}->uncompressedBytes(); |
144 | } |
145 | |
146 | |
147 | |
148 | |
149 | sub crc32 |
150 | { |
151 | my $self = shift ; |
152 | $self->{Def}->crc32(); |
153 | } |
154 | |
155 | sub adler32 |
156 | { |
157 | my $self = shift ; |
158 | $self->{Def}->adler32(); |
159 | } |
160 | |
161 | |
162 | 1; |
163 | |
164 | __END__ |
165 | |