Initial Commit

database/perl/lib/IO/Uncompress/Adapter/Inflate.pm

@@ -0,0 +1,156 @@
+package IO::Uncompress::Adapter::Inflate;
+
+use strict;
+use warnings;
+use bytes;
+
+use IO::Compress::Base::Common  2.100 qw(:Status);
+use Compress::Raw::Zlib  2.100 qw(Z_OK Z_BUF_ERROR Z_STREAM_END Z_FINISH MAX_WBITS);
+
+our ($VERSION);
+$VERSION = '2.100';
+
+
+
+sub mkUncompObject
+{
+    my $crc32   = shift || 1;
+    my $adler32 = shift || 1;
+    my $scan    = shift || 0;
+
+    my $inflate ;
+    my $status ;
+
+    if ($scan)
+    {
+        ($inflate, $status) = Compress::Raw::Zlib::InflateScan->new(
+                                    #LimitOutput  => 1,
+                                    CRC32        => $crc32,
+                                    ADLER32      => $adler32,
+                                    WindowBits   => - MAX_WBITS );
+    }
+    else
+    {
+        ($inflate, $status) = Compress::Raw::Zlib::Inflate->new(
+                                    AppendOutput => 1,
+                                    LimitOutput  => 1,
+                                    CRC32        => $crc32,
+                                    ADLER32      => $adler32,
+                                    WindowBits   => - MAX_WBITS );
+    }
+
+    return (undef, "Could not create Inflation object: $status", $status)
+        if $status != Z_OK ;
+
+    return bless {'Inf'        => $inflate,
+                  'CompSize'   => 0,
+                  'UnCompSize' => 0,
+                  'Error'      => '',
+                  'ConsumesInput' => 1,
+                 } ;
+
+}
+
+sub uncompr
+{
+    my $self = shift ;
+    my $from = shift ;
+    my $to   = shift ;
+    my $eof  = shift ;
+
+    my $inf   = $self->{Inf};
+
+    my $status = $inf->inflate($from, $to, $eof);
+    $self->{ErrorNo} = $status;
+    if ($status != Z_OK && $status != Z_STREAM_END && $status != Z_BUF_ERROR)
+    {
+        $self->{Error} = "Inflation Error: $status";
+        return STATUS_ERROR;
+    }
+
+    return STATUS_OK        if $status == Z_BUF_ERROR ; # ???
+    return STATUS_OK        if $status == Z_OK ;
+    return STATUS_ENDSTREAM if $status == Z_STREAM_END ;
+    return STATUS_ERROR ;
+}
+
+sub reset
+{
+    my $self = shift ;
+    $self->{Inf}->inflateReset();
+
+    return STATUS_OK ;
+}
+
+#sub count
+#{
+#    my $self = shift ;
+#    $self->{Inf}->inflateCount();
+#}
+
+sub crc32
+{
+    my $self = shift ;
+    $self->{Inf}->crc32();
+}
+
+sub compressedBytes
+{
+    my $self = shift ;
+    $self->{Inf}->compressedBytes();
+}
+
+sub uncompressedBytes
+{
+    my $self = shift ;
+    $self->{Inf}->uncompressedBytes();
+}
+
+sub adler32
+{
+    my $self = shift ;
+    $self->{Inf}->adler32();
+}
+
+sub sync
+{
+    my $self = shift ;
+    ( $self->{Inf}->inflateSync(@_) == Z_OK)
+            ? STATUS_OK
+            : STATUS_ERROR ;
+}
+
+
+sub getLastBlockOffset
+{
+    my $self = shift ;
+    $self->{Inf}->getLastBlockOffset();
+}
+
+sub getEndOffset
+{
+    my $self = shift ;
+    $self->{Inf}->getEndOffset();
+}
+
+sub resetLastBlockByte
+{
+    my $self = shift ;
+    $self->{Inf}->resetLastBlockByte(@_);
+}
+
+sub createDeflateStream
+{
+    my $self = shift ;
+    my $deflate = $self->{Inf}->createDeflateStream(@_);
+    return bless {'Def'        => $deflate,
+                  'CompSize'   => 0,
+                  'UnCompSize' => 0,
+                  'Error'      => '',
+                 }, 'IO::Compress::Adapter::Deflate';
+}
+
+1;
+
+
+__END__