summaryrefslogtreecommitdiff
path: root/Master/tlpkg/tlperl/lib/IO/Compress/Adapter/Deflate.pm
blob: 33e56d08a04ee326dc5d5655eedd9882101d8a9a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
package IO::Compress::Adapter::Deflate ;

use strict;
use warnings;
use bytes;

use IO::Compress::Base::Common  2.033 qw(:Status);

use Compress::Raw::Zlib  2.033 qw(Z_OK Z_FINISH MAX_WBITS) ;
our ($VERSION);

$VERSION = '2.033';

sub mkCompObject
{
    my $crc32    = shift ;
    my $adler32  = shift ;
    my $level    = shift ;
    my $strategy = shift ;

    my ($def, $status) = new Compress::Raw::Zlib::Deflate
                                -AppendOutput   => 1,
                                -CRC32          => $crc32,
                                -ADLER32        => $adler32,
                                -Level          => $level,
                                -Strategy       => $strategy,
                                -WindowBits     => - MAX_WBITS;

    return (undef, "Cannot create Deflate object: $status", $status) 
        if $status != Z_OK;    

    return bless {'Def'        => $def,
                  'Error'      => '',
                 } ;     
}

sub compr
{
    my $self = shift ;

    my $def   = $self->{Def};

    my $status = $def->deflate($_[0], $_[1]) ;
    $self->{ErrorNo} = $status;

    if ($status != Z_OK)
    {
        $self->{Error} = "Deflate Error: $status"; 
        return STATUS_ERROR;
    }

    return STATUS_OK;    
}

sub flush
{
    my $self = shift ;

    my $def   = $self->{Def};

    my $opt = $_[1] || Z_FINISH;
    my $status = $def->flush($_[0], $opt);
    $self->{ErrorNo} = $status;

    if ($status != Z_OK)
    {
        $self->{Error} = "Deflate Error: $status"; 
        return STATUS_ERROR;
    }

    return STATUS_OK;    
    
}

sub close
{
    my $self = shift ;

    my $def   = $self->{Def};

    $def->flush($_[0], Z_FINISH)
        if defined $def ;
}

sub reset
{
    my $self = shift ;

    my $def   = $self->{Def};

    my $status = $def->deflateReset() ;
    $self->{ErrorNo} = $status;
    if ($status != Z_OK)
    {
        $self->{Error} = "Deflate Error: $status"; 
        return STATUS_ERROR;
    }

    return STATUS_OK;    
}

sub deflateParams 
{
    my $self = shift ;

    my $def   = $self->{Def};

    my $status = $def->deflateParams(@_);
    $self->{ErrorNo} = $status;
    if ($status != Z_OK)
    {
        $self->{Error} = "deflateParams Error: $status"; 
        return STATUS_ERROR;
    }

    return STATUS_OK;   
}



#sub total_out
#{
#    my $self = shift ;
#    $self->{Def}->total_out();
#}
#
#sub total_in
#{
#    my $self = shift ;
#    $self->{Def}->total_in();
#}

sub compressedBytes
{
    my $self = shift ;

    $self->{Def}->compressedBytes();
}

sub uncompressedBytes
{
    my $self = shift ;
    $self->{Def}->uncompressedBytes();
}




sub crc32
{
    my $self = shift ;
    $self->{Def}->crc32();
}

sub adler32
{
    my $self = shift ;
    $self->{Def}->adler32();
}


1;

__END__