private void TestWadEntryDataHandleOperations(Wad wad)
{
foreach (WadEntry entry in wad.Entries.Values)
{
// Ignore file redirections
if (entry.Type == WadEntryType.FileRedirection)
{
return;
}
WadEntryDataHandle dataHandle = entry.GetDataHandle();
Stream compressedDataStream = null;
Stream decompressedDataStream = null;
Assert.DoesNotThrow(delegate
{
compressedDataStream = dataHandle.GetCompressedStream();
}, "Failed to get compressed stream");
Assert.DoesNotThrow(delegate
{
decompressedDataStream = dataHandle.GetDecompressedStream();
}, "Failed to get decompressed data stream");
Assert.AreEqual((int)compressedDataStream.Length, entry.CompressedSize);
Assert.AreEqual((int)decompressedDataStream.Length, entry.UncompressedSize);
// Verify checksum
if (entry.ChecksumType == WadEntryChecksumType.SHA256)
{
using (SHA256 sha = SHA256.Create())
{
byte[] computedHash = sha.ComputeHash(compressedDataStream).Take(8).ToArray();
Assert.IsTrue(computedHash.SequenceEqual(entry.Checksum), $"Entry ({entry.XXHash}) SHA256 checksum does not match computed one");
}
}
else if (entry.ChecksumType == WadEntryChecksumType.XXHash3)
{
byte[] compressedData = new byte[compressedDataStream.Length];
compressedDataStream.Seek(0, SeekOrigin.Begin);
compressedDataStream.Read(compressedData);
ulong computedHash = XXHash3.Hash64(compressedData);
byte[] computedHashBytes = BitConverter.GetBytes(computedHash);
Assert.IsTrue(computedHashBytes.SequenceEqual(entry.Checksum), $"Entry ({entry.XXHash}) XXHash3 checksum does not match computed one");
}
}
}
internal void ComputeChecksum()
{
if (this.ChecksumType == WadEntryChecksumType.SHA256)
{
using (SHA256 sha = SHA256.Create())
{
this.DataStream.Seek(0, SeekOrigin.Begin);
this.Checksum = sha.ComputeHash(this.DataStream).Take(8).ToArray();
}
}
else if (this.ChecksumType == WadEntryChecksumType.XXHash3)
{
byte[] data = new byte[this.DataStream.Length];
this.DataStream.Seek(0, SeekOrigin.Begin);
this.DataStream.Read(data, 0, data.Length);
this.Checksum = BitConverter.GetBytes(XXHash3.Hash64(data));
}
}
static void Main(string[] args)
{
byte[] xx = File.ReadAllBytes(@"C:\Users\Crauzer\Desktop\test.xxx");
XXHash3.Hash64(xx);
}
