193 lines
3.7 KiB
Perl
193 lines
3.7 KiB
Perl
package IO::Compress::Adapter::Deflate ;
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use strict;
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use warnings;
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use bytes;
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use IO::Compress::Base::Common 2.204 qw(:Status);
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use Compress::Raw::Zlib 2.204 qw( !crc32 !adler32 ) ;
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require Exporter;
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our ($VERSION, @ISA, @EXPORT_OK, %EXPORT_TAGS, @EXPORT, %DEFLATE_CONSTANTS);
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$VERSION = '2.204';
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@ISA = qw(Exporter);
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@EXPORT_OK = @Compress::Raw::Zlib::DEFLATE_CONSTANTS;
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%EXPORT_TAGS = %Compress::Raw::Zlib::DEFLATE_CONSTANTS;
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@EXPORT = @EXPORT_OK;
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%DEFLATE_CONSTANTS = %EXPORT_TAGS ;
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sub mkCompObject
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{
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my $crc32 = shift ;
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my $adler32 = shift ;
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my $level = shift ;
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my $strategy = shift ;
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my ($def, $status) = Compress::Raw::Zlib::Deflate->new(
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-AppendOutput => 1,
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-CRC32 => $crc32,
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-ADLER32 => $adler32,
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-Level => $level,
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-Strategy => $strategy,
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-WindowBits => - MAX_WBITS);
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return (undef, "Cannot create Deflate object: $status", $status)
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if $status != Z_OK;
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return bless {'Def' => $def,
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'Error' => '',
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} ;
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}
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sub mkCompObject1
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{
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my $crc32 = shift ;
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my $adler32 = shift ;
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my $level = shift ;
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my $strategy = shift ;
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my ($def, $status) = Compress::Raw::Zlib::Deflate->new(
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-AppendOutput => 1,
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-CRC32 => $crc32,
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-ADLER32 => $adler32,
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-Level => $level,
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-Strategy => $strategy,
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-WindowBits => MAX_WBITS);
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return (undef, "Cannot create Deflate object: $status", $status)
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if $status != Z_OK;
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return bless {'Def' => $def,
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'Error' => '',
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} ;
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}
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sub compr
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{
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my $self = shift ;
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my $def = $self->{Def};
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my $status = $def->deflate($_[0], $_[1]) ;
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$self->{ErrorNo} = $status;
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if ($status != Z_OK)
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{
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$self->{Error} = "Deflate Error: $status";
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return STATUS_ERROR;
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}
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return STATUS_OK;
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}
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sub flush
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{
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my $self = shift ;
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my $def = $self->{Def};
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my $opt = $_[1] || Z_FINISH;
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my $status = $def->flush($_[0], $opt);
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$self->{ErrorNo} = $status;
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if ($status != Z_OK)
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{
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$self->{Error} = "Deflate Error: $status";
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return STATUS_ERROR;
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}
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return STATUS_OK;
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}
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sub close
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{
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my $self = shift ;
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my $def = $self->{Def};
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$def->flush($_[0], Z_FINISH)
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if defined $def ;
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}
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sub reset
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{
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my $self = shift ;
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my $def = $self->{Def};
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my $status = $def->deflateReset() ;
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$self->{ErrorNo} = $status;
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if ($status != Z_OK)
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{
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$self->{Error} = "Deflate Error: $status";
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return STATUS_ERROR;
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}
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return STATUS_OK;
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}
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sub deflateParams
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{
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my $self = shift ;
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my $def = $self->{Def};
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my $status = $def->deflateParams(@_);
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$self->{ErrorNo} = $status;
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if ($status != Z_OK)
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{
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$self->{Error} = "deflateParams Error: $status";
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return STATUS_ERROR;
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}
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return STATUS_OK;
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}
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#sub total_out
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#{
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# my $self = shift ;
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# $self->{Def}->total_out();
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#}
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#
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#sub total_in
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#{
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# my $self = shift ;
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# $self->{Def}->total_in();
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#}
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sub compressedBytes
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{
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my $self = shift ;
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$self->{Def}->compressedBytes();
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}
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sub uncompressedBytes
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{
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my $self = shift ;
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$self->{Def}->uncompressedBytes();
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}
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sub crc32
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{
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my $self = shift ;
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$self->{Def}->crc32();
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}
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sub adler32
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{
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my $self = shift ;
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$self->{Def}->adler32();
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}
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1;
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__END__
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