public byte[] decompressFile(String name)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentException("Value cannot be null or empty.", nameof(name));
}
int hash = 0;
name = name.ToUpper();
for (int c = 0; c < name.Length; c++)
{
hash = (hash * 61 + name[c]) - 32;
}
for (int file = 0; file < fileCount; file++)
{
if (hashes[file] == hash)
{
byte[] output = new byte[decompressedSizes[file]];
if (!decompressed)
{
Bzip2Decompressor.decompress(output, decompressedSizes[file], outputData, compressedSizes[file],
initialOffsets[file]);
}
else
{
System.Buffer.BlockCopy(outputData, initialOffsets[file], output, 0, decompressedSizes[file]);
}
return(output);
}
}
throw new InvalidOperationException($"Failed to decompress Archive: {name} Expected Hash: {hash}");
}
public Archive(byte[] data)
{
Default317Buffer buffer = new Default317Buffer(data);
int compressedLength = buffer.get3Bytes();
int decompressedLength = buffer.get3Bytes();
if (decompressedLength != compressedLength)
{
byte[] output = new byte[compressedLength];
Bzip2Decompressor.decompress(output, compressedLength, data, decompressedLength, 6);
outputData = output;
buffer = new Default317Buffer(outputData);
this.decompressed = true;
}
else
{
outputData = data;
this.decompressed = false;
}
fileCount = buffer.getUnsignedLEShort();
hashes = new int[fileCount];
decompressedSizes = new int[fileCount];
compressedSizes = new int[fileCount];
initialOffsets = new int[fileCount];
int offset = buffer.position + fileCount * 10;
for (int index = 0; index < fileCount; index++)
{
hashes[index] = buffer.getInt();
decompressedSizes[index] = buffer.get3Bytes();
compressedSizes[index] = buffer.get3Bytes();
initialOffsets[index] = offset;
offset += compressedSizes[index];
}
}
