public TarWriter(Stream destination, CompressionInfo compressionInfo)
: base(ArchiveType.Tar)
{
if (!destination.CanWrite)
{
throw new ArgumentException("Tars require writable streams.");
}
switch (compressionInfo.Type)
{
case CompressionType.None:
break;
case CompressionType.BZip2:
{
destination = new BZip2Stream(destination, CompressionMode.Compress, false);
}
break;
case CompressionType.GZip:
{
destination = new GZipStream(destination, CompressionMode.Compress, false);
}
break;
default:
{
throw new InvalidFormatException("Tar does not support compression: " + compressionInfo.Type);
}
}
InitalizeStream(destination, false);
}
public static IReader Open(Stream stream, Options options)
{
Utility.CheckNotNull(stream, "stream");
RewindableStream stream2 = new RewindableStream(stream);
stream2.StartRecording();
if (ZipArchive.IsZipFile(stream2, null))
{
stream2.Rewind(true);
return ZipReader.Open(stream2, null, options);
}
stream2.Rewind(false);
if (GZipArchive.IsGZipFile(stream2))
{
stream2.Rewind(false);
GZipStream stream3 = new GZipStream(stream2, CompressionMode.Decompress);
if (TarArchive.IsTarFile(stream3))
{
stream2.Rewind(true);
return new TarReader(stream2, CompressionType.GZip, options);
}
stream2.Rewind(true);
return GZipReader.Open(stream2, options);
}
stream2.Rewind(false);
if (BZip2Stream.IsBZip2(stream2))
{
stream2.Rewind(false);
BZip2Stream stream4 = new BZip2Stream(stream2, CompressionMode.Decompress, false, false);
if (TarArchive.IsTarFile(stream4))
{
stream2.Rewind(true);
return new TarReader(stream2, CompressionType.BZip2, options);
}
}
stream2.Rewind(false);
if (TarArchive.IsTarFile(stream2))
{
stream2.Rewind(true);
return TarReader.Open(stream2, options);
}
stream2.Rewind(false);
if (!RarArchive.IsRarFile(stream2, options))
{
throw new InvalidOperationException("Cannot determine compressed stream type. Supported Reader Formats: Zip, GZip, BZip2, Tar, Rar");
}
stream2.Rewind(true);
return RarReader.Open(stream2, options);
}
/// <summary>
/// Opens a Reader for Non-seeking usage
/// </summary>
/// <param name="stream"></param>
/// <param name="listener"></param>
/// <param name="options"></param>
/// <returns></returns>
public static IReader OpenReader(Stream stream, IExtractionListener listener,
Options options = Options.KeepStreamsOpen)
{
stream.CheckNotNull("stream");
RewindableStream rewindableStream = new RewindableStream(stream);
rewindableStream.Recording = true;
if (ZipArchive.IsZipFile(rewindableStream))
{
return ZipReader.Open(rewindableStream, listener, options);
}
rewindableStream.Rewind();
rewindableStream.Recording = true;
if (GZipReader.IsGZip(rewindableStream))
{
rewindableStream.Rewind();
GZipStream testStream = new GZipStream(rewindableStream, CompressionMode.Decompress);
rewindableStream.Recording = true;
if (TarReader.IsTarFile(testStream))
{
rewindableStream.Rewind();
return TarGZipReader.Open(rewindableStream, listener, options);
}
rewindableStream.Rewind();
return GZipReader.Open(rewindableStream, listener, options);
}
rewindableStream.Rewind();
rewindableStream.Recording = true;
if (TarReader.IsTarFile(rewindableStream))
{
rewindableStream.Rewind();
return TarReader.Open(rewindableStream, listener, options);
}
rewindableStream.Rewind();
rewindableStream.Recording = true;
if (RarArchive.IsRarFile(rewindableStream))
{
rewindableStream.Rewind();
return RarReader.Open(rewindableStream, listener, options);
}
throw new InvalidOperationException("Cannot determine compressed stream type.");
}
/// <summary>
/// Uncompress a GZip'ed byte array into a single string.
/// </summary>
///
/// <seealso cref="GZipStream.CompressString(String)"/>
/// <seealso cref="GZipStream.UncompressBuffer(byte[])"/>
///
/// <param name="compressed">
/// A buffer containing GZIP-compressed data.
/// </param>
///
/// <returns>The uncompressed string</returns>
public static String UncompressString(byte[] compressed)
{
using (var input = new MemoryStream(compressed))
{
Stream decompressor = new GZipStream(input, CompressionMode.Decompress);
return ZlibBaseStream.UncompressString(compressed, decompressor);
}
}
/// <summary>
/// Compress a string into a byte array using GZip.
/// </summary>
///
/// <remarks>
/// Uncompress it with <see cref="GZipStream.UncompressString(byte[])"/>.
/// </remarks>
///
/// <seealso cref="GZipStream.UncompressString(byte[])"/>
/// <seealso cref="GZipStream.CompressBuffer(byte[])"/>
///
/// <param name="s">
/// A string to compress. The string will first be encoded
/// using UTF8, then compressed.
/// </param>
///
/// <returns>The string in compressed form</returns>
public static byte[] CompressString(String s)
{
using (var ms = new MemoryStream())
{
Stream compressor =
new GZipStream(ms, CompressionMode.Compress, CompressionLevel.BestCompression);
ZlibBaseStream.CompressString(s, compressor);
return ms.ToArray();
}
}
public BinaryStateWriter()
{
_memoryStream = new MemoryStream();
OutStream = new GZipStream(_memoryStream, CompressionMode.Compress, true);
}