Cpp2IL/LibCpp2IL/EndianAwareBinaryReader.cs at new-analysis · csharpHub/Cpp2IL · GitHub

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using System;
using System.IO;
using System.Text;

namespace LibCpp2IL
{
    public class EndianAwareBinaryReader : BinaryReader
    {
        protected bool shouldReverseArrays = !BitConverter.IsLittleEndian; //Default to LE mode, so on LE systems, don't invert.
        public bool IsBigEndian = false;

        public EndianAwareBinaryReader(Stream input) : base(input)
        {
        }

        public EndianAwareBinaryReader(Stream input, Encoding encoding) : base(input, encoding)
        {
        }

        public EndianAwareBinaryReader(Stream input, Encoding encoding, bool leaveOpen) : base(input, encoding, leaveOpen)
        {
        }

        protected void SetBigEndian()
        {
            shouldReverseArrays = BitConverter.IsLittleEndian; //Set to BE mode, so on LE systems we invert.
            IsBigEndian = true;
        }

        public sealed override short ReadInt16()
        {
            if (!shouldReverseArrays)
                return base.ReadInt16();

            return this.ReadInt16WithReversedBits();
        }

        public sealed override int ReadInt32()
        {
            if (!shouldReverseArrays)
                return base.ReadInt32();

            return this.ReadInt32WithReversedBits();
        }

        public sealed override long ReadInt64()
        {
            if (!shouldReverseArrays)
                return base.ReadInt64();

            return this.ReadInt64WithReversedBits();
        }

        public sealed override ushort ReadUInt16()
        {
            if (!shouldReverseArrays)
                return base.ReadUInt16();

            return this.ReadUInt16WithReversedBits();
        }

        public sealed override uint ReadUInt32()
        {
            if (!shouldReverseArrays)
                return base.ReadUInt32();

            return this.ReadUInt32WithReversedBits();
        }

        public sealed override ulong ReadUInt64()
        {
            if (!shouldReverseArrays)
                return base.ReadUInt64();

            return this.ReadUInt64WithReversedBits();
        }

        public sealed override float ReadSingle()
        {
            if (!shouldReverseArrays)
                return base.ReadSingle();

            return this.ReadSingleWithReversedBits();
        }

        public sealed override double ReadDouble()
        {
            if (!shouldReverseArrays)
                return base.ReadDouble();

            return this.ReadDoubleWithReversedBits();
        }
    }
}