public LayerData(string dataString, string encoding, string compression, Layer layer)
{
this.dataString = dataString;
this.encoding = encoding;
this.compression = compression;
globalTileID = new int[layer.Width, layer.Height];
tileRotation = new SpriteEffects[layer.Width, layer.Height];
ReadAndDecodeDataString(layer);
}
private Stream GetStream(byte[] data, Layer layer)
{
Stream stream;
switch (compression)
{
case "gzip":
stream = new GZipStream(new MemoryStream(data), CompressionMode.Decompress);
break;
case "uncompressed":
stream = new MemoryStream(data);
break;
case "zlib":
stream = new Ionic.Zlib.ZlibStream(new MemoryStream(data), Ionic.Zlib.CompressionMode.Decompress);
break;
default:
throw new UnsupportedCompressionException("Layer \"" + layer + "\" has unsupported compression.");
}
return stream;
}
private void ReadAndDecodeDataString(Layer layer)
{
switch (encoding)
{
case "base64":
char[] encodedString = dataString.Trim().ToCharArray();
byte[] decodedString = Convert.FromBase64CharArray(encodedString, 0, encodedString.Length);
DecompressAndWriteData(GetStream(decodedString, layer));
break;
default:
throw new UnsupportedEncodingException("Layer \"" + layer + "\" has unsupported encoding.");
}
}
