internal static UsmapPropertyData Deserialize(IGenericReader reader, string[] names)
{
var propType = reader.Read <EUsmapPropertyType>();
var data = new UsmapPropertyData(propType);
switch (propType)
{
case EUsmapPropertyType.EnumProperty:
{
data.InnerType = Deserialize(reader, names);
var idx = reader.Read <uint>();
data.EnumName = names[idx];
break;
}
case EUsmapPropertyType.StructProperty:
{
var idx = reader.Read <uint>();
data.StructType = names[idx];
break;
}
case EUsmapPropertyType.SetProperty:
case EUsmapPropertyType.ArrayProperty:
{
data.InnerType = Deserialize(reader, names);
break;
}
case EUsmapPropertyType.MapProperty:
{
data.InnerType = Deserialize(reader, names);
data.ValueType = Deserialize(reader, names);
break;
}
}
return(data);
}
internal Usmap(IGenericReader fileReader, UsmapOptions options)
{
var magic = fileReader.Read <ushort>();
if (magic != MAGIC)
{
throw new FileLoadException("Invalid .usmap magic constant");
}
var version = fileReader.Read <EUsmapVersion>();
if (version != EUsmapVersion.LATEST)
{
throw new FileLoadException($"Invalid .usmap version: {(int)version}");
}
var compMethod = fileReader.Read <EUsmapCompressionMethod>();
var compSize = fileReader.Read <uint>();
var decompSize = fileReader.Read <uint>();
if (fileReader.Size - fileReader.Position < compSize)
{
throw new FileLoadException("There is not enough data in the .usmap file");
}
options ??= new UsmapOptions();
IGenericReader reader;
switch (compMethod)
{
case EUsmapCompressionMethod.None:
{
if (compSize != decompSize)
{
throw new FileLoadException("No .usmap compression: Compression size must be equal to decompression size");
}
reader = fileReader;
break;
}
case EUsmapCompressionMethod.Oodle:
{
if (options.OodlePath == null)
{
throw new FileLoadException("Undefined oodle library path");
}
if (!File.Exists(options.OodlePath))
{
throw new FileLoadException($"Could not find oodle library at \"{options.OodlePath}\"");
}
var compData = fileReader.ReadBytes((int)compSize);
fileReader.Dispose();
var data = new byte[decompSize];
using var decompressor = new OodleCompressor(options.OodlePath);
unsafe
{
var result = decompressor.Decompress(compData, compSize, data, decompSize, OodleLZ_FuzzSafe.No, OodleLZ_CheckCRC.No, OodleLZ_Verbosity.None, 0L, 0L, 0L, 0L, 0L, 0L, OodleLZ_Decode_ThreadPhase.Unthreaded);
if (result != decompSize)
{
throw new FileLoadException($"Invalid oodle .usmap decompress result: {result} / {decompSize}");
}
}
reader = new GenericBufferReader(data);
break;
}
case EUsmapCompressionMethod.Brotli:
{
var compData = fileReader.ReadBytes((int)compSize);
fileReader.Dispose();
var data = new byte[decompSize];
using var decoder = new BrotliDecoder();
var result = decoder.Decompress(compData, data, out var bytesConsumed, out var bytesWritten);
if (result != OperationStatus.Done)
{
throw new FileLoadException($"Invalid brotli .usmap decompress result: {result} | {bytesWritten} / {decompSize} | {bytesConsumed} / {compSize}");
}
reader = new GenericBufferReader(data);
break;
}
default:
throw new FileLoadException($"Unknown .usmap compression method: {(int)compMethod}");
}
string[] names;
{
var size = reader.Read <uint>();
names = new string[size];
for (var i = 0; i < size; ++i)
{
var nameSize = reader.ReadByte();
var name = reader.ReadString(nameSize, Encoding.UTF8);
names[i] = name;
}
}
{
var size = reader.Read <uint>();
Enums = new UsmapEnum[size];
for (var i = 0; i < size; ++i)
{
var idx = reader.Read <uint>();
var enumNamesSize = reader.ReadByte();
var enumNames = new string[enumNamesSize];
for (var j = 0; j < enumNamesSize; ++j)
{
var nameIdx = reader.Read <uint>();
enumNames[j] = names[nameIdx];
}
Enums[i] = new UsmapEnum(names[idx], enumNames);
}
}
{
var size = reader.Read <uint>();
Schemas = new UsmapSchema[size];
for (var i = 0; i < size; ++i)
{
var idx = reader.Read <uint>();
var superIdx = reader.Read <uint>();
var propCount = reader.Read <ushort>();
var serializablePropCount = reader.Read <ushort>();
var props = new UsmapProperty[serializablePropCount];
for (var j = 0; j < serializablePropCount; ++j)
{
var schemaIdx = reader.Read <ushort>();
var arraySize = reader.Read <byte>();
var nameIdx = reader.Read <uint>();
var data = UsmapPropertyData.Deserialize(reader, names);
props[j] = new UsmapProperty(names[nameIdx], schemaIdx, arraySize, data);
}
Schemas[i] = new UsmapSchema(names[idx], superIdx == uint.MaxValue ? null : names[superIdx], propCount, props);
}
}
Names = options.SaveNames ? names : null;
reader.Dispose();
}
