Initial Commit

database/perl/lib/IO/Compress/Adapter/Deflate.pm

@@ -0,0 +1,169 @@
+package IO::Compress::Adapter::Deflate ;
+
+use strict;
+use warnings;
+use bytes;
+
+use IO::Compress::Base::Common 2.100 qw(:Status);
+use Compress::Raw::Zlib  2.100 qw( !crc32 !adler32 ) ;
+
+require Exporter;
+our ($VERSION, @ISA, @EXPORT_OK, %EXPORT_TAGS, @EXPORT, %DEFLATE_CONSTANTS);
+
+$VERSION = '2.100';
+@ISA = qw(Exporter);
+@EXPORT_OK = @Compress::Raw::Zlib::DEFLATE_CONSTANTS;
+%EXPORT_TAGS = %Compress::Raw::Zlib::DEFLATE_CONSTANTS;
+@EXPORT = @EXPORT_OK;
+%DEFLATE_CONSTANTS = %EXPORT_TAGS ;
+
+sub mkCompObject
+{
+    my $crc32    = shift ;
+    my $adler32  = shift ;
+    my $level    = shift ;
+    my $strategy = shift ;
+
+    my ($def, $status) = Compress::Raw::Zlib::Deflate->new(
+                                -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__