hybridclr_unity/Editor/3rds/UnityFS/UnityBinUtils.cs

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2022-09-22 08:56:07 +08:00
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using System.Text;
namespace UnityFS
{
public static class UnityBinUtils
{
public static void SwapUInt(ref uint val)
{
val = (val >> 24) | ((val >> 8) & 0x0000ff00) | ((val << 8) & 0x00ff0000) | (val << 24);
}
public static string ReadRawString(this BinaryReader br)
{
long startPos = br.BaseStream.Position;
while (true)
{
byte val = br.ReadByte();
if(val == 0)
break;
}
int size = (int)(br.BaseStream.Position - startPos);
br.BaseStream.Position = startPos;
byte[] buffer = br.ReadBytes(size);
string ret = Encoding.UTF8.GetString(buffer, 0, size - 1);
return ret;
}
public static void WriteRawString(this BinaryWriter bw, string str)
{
byte[] buffer = Encoding.UTF8.GetBytes(str);
bw.Write(buffer, 0, buffer.Length);
bw.Write((byte)0);
}
public static string ReadSizeString(this BinaryReader br)
{
int size = br.ReadInt32();
byte[] buff = br.ReadBytes(size);
br.BaseStream.AlignOffset4();
string ret = Encoding.UTF8.GetString(buff);
return ret;
}
public static void WriteSizeString(this BinaryWriter bw, string str)
{
byte[] buff = Encoding.UTF8.GetBytes(str);
bw.Write(buff.Length);
bw.Write(buff, 0, buff.Length);
bw.BaseStream.AlignOffset4();
}
public static void AlignOffset4(this Stream stream)
{
int offset = (((int)stream.Position + 3) >> 2) << 2;
stream.Position = offset;
}
public static long AlignedReadInt64(this BinaryReader br)
{
br.BaseStream.AlignOffset4();
return br.ReadInt64();
}
public static void AlignedWriteInt64(this BinaryWriter bw, long val)
{
bw.BaseStream.AlignOffset4();
bw.Write(val);
}
}
}