/// <summary>
/// Compresses a BZIP2 file.
/// </summary>
/// <param name="bytes"> The uncompressed bytes. </param>
/// <returns> The compressed bytes without the header. </returns>
/// <exception cref="IOException"> if an I/O erorr occurs. </exception>
public static byte[] Bzip2(byte[] bytes)
{
var @is = new ByteArrayInputStream(bytes);
try
{
var bout = new ByteArrayOutputStream();
OutputStream os = new CBZip2OutputStream(bout, 1);
try
{
var buf = new byte[4096];
var len = 0;
while ((len = @is.read(buf, 0, buf.Length)) != -1)
{
os.write(buf, 0, len);
}
}
finally
{
os.close();
}
/* strip the header from the byte array and return it */
bytes = bout.toByteArray();
var bzip2 = new byte[bytes.Length - 2];
Array.Copy(bytes, 2, bzip2, 0, bzip2.Length);
return(bzip2);
}
finally
{
@is.close();
}
}
/// <exception cref="System.IO.IOException"/>
private void InternalReset()
{
if (needsReset)
{
needsReset = false;
WriteStreamHeader();
this.output = new CBZip2OutputStream(@out);
}
}
public static byte[] CompressData(byte[] data)
{
using (MemoryStream compressed = new MemoryStream())
{
using (CBZip2OutputStream s = new CBZip2OutputStream(compressed))
{
s.Write(data, 0, data.Length);
s.Finish();
byte[] cdata = new byte[compressed.Length];
compressed.Seek(0, SeekOrigin.Begin);
compressed.Read(cdata, 0, (int)compressed.Length);
return(cdata);
}
}
}
