private Stream GetWriteStream(Stream writeStream)
{
counting = new CountingWritableSubStream(writeStream);
Stream output = counting;
switch (compressionInfo.Compression)
{
case ZipCompressionMethod.None:
{
return output;
}
case ZipCompressionMethod.Deflate:
{
return new DeflateStream(counting, CompressionMode.Compress, compressionInfo.DeflateCompressionLevel,
true);
}
case ZipCompressionMethod.BZip2:
{
return new BZip2Stream(counting, CompressionMode.Compress, true);
}
case ZipCompressionMethod.LZMA:
{
counting.WriteByte(9);
counting.WriteByte(20);
counting.WriteByte(5);
counting.WriteByte(0);
LzmaStream lzmaStream = new LzmaStream(new LzmaEncoderProperties(!originalStream.CanSeek),
false, counting);
counting.Write(lzmaStream.Properties, 0, lzmaStream.Properties.Length);
return lzmaStream;
}
case ZipCompressionMethod.PPMd:
{
counting.Write(writer.ppmdProperties.Properties, 0, 2);
return new PpmdStream(writer.ppmdProperties, counting, true);
}
default:
{
throw new NotSupportedException("CompressionMethod: " + compressionInfo.Compression);
}
}
}
private Stream GetWriteStream(Stream writeStream)
{
this.counting = new CountingWritableSubStream(writeStream);
Stream counting = this.counting;
switch (this.writer.zipCompressionInfo.Compression)
{
case ZipCompressionMethod.BZip2:
return new BZip2Stream(this.counting, CompressionMode.Compress, true, false);
case ZipCompressionMethod.LZMA:
{
this.counting.WriteByte(9);
this.counting.WriteByte(20);
this.counting.WriteByte(5);
this.counting.WriteByte(0);
LzmaStream stream2 = new LzmaStream(new LzmaEncoderProperties(!this.originalStream.CanSeek), false, this.counting);
this.counting.Write(stream2.Properties, 0, stream2.Properties.Length);
return stream2;
}
case ZipCompressionMethod.PPMd:
this.counting.Write(this.writer.ppmdProperties.Properties, 0, 2);
return new PpmdStream(this.writer.ppmdProperties, this.counting, true);
case ZipCompressionMethod.None:
return counting;
case ZipCompressionMethod.Deflate:
return new DeflateStream(this.counting, CompressionMode.Compress, this.writer.zipCompressionInfo.DeflateCompressionLevel, true);
}
throw new NotSupportedException("CompressionMethod: " + this.writer.zipCompressionInfo.Compression);
}
