private Object ReadAsset(AssetReader reader, AssetInfo assetInfo, long offset, int size)
{
Object asset = Collection.AssetFactory.CreateAsset(assetInfo);
if (asset == null)
{
return(null);
}
reader.BaseStream.Position = offset;
if (Config.IsGenerateGUIDByContent)
{
byte[] data = reader.ReadBytes(size);
#if !DEBUG
try
#endif
{
asset.Read(data);
}
#if !DEBUG
catch
{
Logger.Instance.Log(LogType.Error, LogCategory.General, $"Version[{reader.Version}] '{Name}'");
throw;
}
#endif
using (MD5 md5 = MD5.Create())
{
byte[] md5Hash = md5.ComputeHash(data);
assetInfo.GUID = new EngineGUID(md5Hash);
}
}
else
{
using (AssetReader alignReader = new AssetReader(reader, offset))
{
#if !DEBUG
try
#endif
{
asset.Read(alignReader);
}
#if !DEBUG
catch
{
Logger.Instance.Log(LogType.Error, LogCategory.General, $"Version[{reader.Version}] '{Name}'");
throw;
}
#endif
}
long read = reader.BaseStream.Position - offset;
if (read != size)
{
throw new Exception($"Read {read} but expected {size} for asset type {asset.ClassID}. Version[{reader.Version}] '{Name}'");
}
}
return(asset);
}
public override void Read(AssetReader reader)
{
base.Read(reader);
int fileCount = reader.ReadInt32();
FilenameEntry[] files = new FilenameEntry[fileCount];
for (int i = 0; i < fileCount; i++)
{
int fileId = reader.ReadInt32();
string file = reader.ReadString();
files[i] = new FilenameEntry(fileId, file);
}
int unknown = reader.ReadInt32();
int hashCount = reader.ReadInt32();
HashEntry[] hashes = new HashEntry[hashCount];
try
{
for (int i = 0; i < hashCount; i++)
{
int fileId = reader.ReadInt32();
byte[] hashBytes = reader.ReadBytes(16);
int trailer = reader.ReadInt32();
if (trailer != 0)
{
throw new InvalidDataException($"Expected trailer (0), got {trailer}");
}
hashes[i] = new HashEntry(fileId, hashBytes);
}
}
catch (Exception ex)
{
Logger.Log(LogType.Info, LogCategory.Import, $"Failed to read hashes from asset bundle manifest, hash-table is incomplete: {ex.GetType().Name} -> {ex.Message}");
byte[] buffer = new byte[4096];
while (reader.Read(buffer, 0, buffer.Length) != 0)
{
//yeet the remaining bytes into nowhere
}
for (int i = 0; i < hashes.Length; i++)
{
if (hashes[i] == null)
{
hashes[i] = new HashEntry(-1, new byte[0]);
}
}
}
FileEntries = files;
HashEntries = hashes;
}
private Object ReadAsset(AssetReader reader, AssetInfo assetInfo, long offset, int size)
{
Object asset = Collection.AssetFactory.CreateAsset(assetInfo);
if (asset == null)
{
return(null);
}
reader.BaseStream.Position = offset;
if (Config.IsGenerateGUIDByContent)
{
byte[] data = reader.ReadBytes(size);
#if !DEBUG
try
#endif
{
asset.Read(data);
}
#if !DEBUG
catch (Exception ex)
{
throw new SerializedFileException($"Error during reading asset type {asset.ClassID}", ex, Version, Name, FilePath);
}
#endif
using (MD5 md5 = MD5.Create())
{
byte[] md5Hash = md5.ComputeHash(data);
assetInfo.GUID = new EngineGUID(md5Hash);
}
}
else
{
#if !DEBUG
try
#endif
{
asset.Read(reader);
}
#if !DEBUG
catch (Exception ex)
{
throw new SerializedFileException($"Error during reading asset type {asset.ClassID}", ex, Version, Name, FilePath);
}
#endif
long read = reader.BaseStream.Position - offset;
if (read != size)
{
throw new SerializedFileException($"Read {read} but expected {size} for asset type {asset.ClassID}", Version, Name, FilePath);
}
}
return(asset);
}