/// <summary>
/// Decompress a file and automaticaly updates the format of the compressed file.
/// </summary>
/// <param name="data">Stream with the file to be decompressed</param>
/// <param name="format">Format of the compression</param>
/// <returns></returns>
public static void decompress(ref Stream data, ref fileFormat format)
{
BinaryReader input = new BinaryReader(data);
byte[] decompressedData, content;
uint length;
switch (format)
{
case fileFormat.cmpBLZ:
decompressedData = BLZ.decompress(data);
content = new byte[decompressedData.Length - 1];
Buffer.BlockCopy(decompressedData, 1, content, 0, content.Length);
data = new MemoryStream(content);
format = identify(data);
break;
case fileFormat.cmpIECP: //Stella Glow
uint magic = input.ReadUInt32();
length = input.ReadUInt32();
decompressedData = LZSS.decompress(data, length);
data = new MemoryStream(decompressedData);
format = identify(data);
break;
case fileFormat.cmpLZSS:
case fileFormat.cmpLZSSHeader:
if (format == fileFormat.cmpLZSSHeader) input.ReadUInt32();
length = input.ReadUInt32() >> 8;
decompressedData = LZSS_Ninty.decompress(data, length);
data = new MemoryStream(decompressedData);
format = identify(data);
break;
}
}
/// <summary>
/// Returns true if the format is a compression format, and false otherwise.
/// </summary>
/// <param name="format">The format of the file</param>
/// <returns></returns>
public static bool isCompressed(fileFormat format)
{
switch (format)
{
case fileFormat.cmpBLZ:
case fileFormat.cmpIECP:
case fileFormat.cmpLZSS:
case fileFormat.cmpLZSSHeader:
return true;
}
return false;
}
