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Switch-Toolbox/Switch_Toolbox_Library/IO/FlatBuffer/FlatBufferParse.cs

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4.7 KiB
C#
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using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Threading.Tasks;
using System.Reflection;
using Toolbox.Library.IO;
using OpenTK;
namespace Toolbox.Library.IO.FlatBuffer
{
public class FlatBufferParse
{
public static T ParseFlatTable<T>(FileReader reader)
where T : FlatTable, new()
{
long origin = reader.Position;
int vtableSOffset = reader.ReadInt32();
var dataOffset = reader.ReadOffset(true, typeof(uint));
T section = new T();
using (reader.TemporarySeek(origin - vtableSOffset, System.IO.SeekOrigin.Begin))
{
ushort vTableSize = reader.ReadUInt16();
ushort tableSize = reader.ReadUInt16();
Console.WriteLine($"vTableSize {vTableSize}");
Console.WriteLine($"tableSize {tableSize}");
List<ushort> pointers = new List<ushort>();
uint looper = 4;
while (looper < vTableSize)
{
pointers.Add(reader.ReadUInt16());
looper += 2;
}
section.LayoutPointers = pointers.ToArray();
}
using (reader.TemporarySeek(dataOffset, System.IO.SeekOrigin.Begin))
{
section.Read(reader);
}
return section;
}
}
public class FlatTableParse : Attribute { }
public class FlatTable
{
public ushort LayoutSize { get; set; }
public ushort LayoutStride { get; set; }
public ushort[] LayoutPointers { get; set; }
public void Read(FileReader reader)
{
long origin = reader.Position;
PropertyInfo[] types = new PropertyInfo[(int)LayoutPointers?.Length];
var sectionType = this.GetType();
int index = 0;
foreach (var prop in sectionType.GetProperties())
{
if (!Attribute.IsDefined(prop, typeof(FlatTableParse)))
continue;
types[index++] = prop;
}
for (int i = 0; i < LayoutPointers?.Length; i++)
{
reader.SeekBegin(origin + LayoutPointers[i]);
if (types[i] != null)
{
var prop = types[i];
var propertyType = prop.PropertyType;
if (propertyType == typeof(uint))
prop.SetValue(this, reader.ReadUInt32());
else if (propertyType == typeof(int))
prop.SetValue(this, reader.ReadInt32());
else if (propertyType == typeof(byte))
prop.SetValue(this, reader.ReadByte());
else if (propertyType == typeof(sbyte))
prop.SetValue(this, reader.ReadSByte());
else if (propertyType == typeof(ushort))
prop.SetValue(this, reader.ReadUInt16());
else if (propertyType == typeof(short))
prop.SetValue(this, reader.ReadInt16());
if (propertyType == typeof(string))
{
var offset = reader.ReadOffset(true, typeof(uint));
reader.SeekBegin(offset);
prop.SetValue(this, reader.ReadString(Syroot.BinaryData.BinaryStringFormat.ByteLengthPrefix));
}
else if (propertyType == typeof(Vector2))
prop.SetValue(this, new Vector2(
reader.ReadSingle(),
reader.ReadSingle())
);
else if (propertyType == typeof(Vector3))
prop.SetValue(this, new Vector3(
reader.ReadSingle(),
reader.ReadSingle(),
reader.ReadSingle())
);
else if (propertyType == typeof(Vector4))
prop.SetValue(this, new Vector4(
reader.ReadSingle(),
reader.ReadSingle(),
reader.ReadSingle(),
reader.ReadSingle())
);
else if (propertyType == typeof(FlatTable))
{
var offset = reader.ReadOffset(true, typeof(uint));
reader.SeekBegin(offset);
}
else if (propertyType is IEnumerable<FlatTable>)
{
}
}
}
}
}
}