.Net Core 中的 Big-Endian 处理 [英] Big-Endian handling in .Net Core

问题描述

是否有支持 .Net Core 的 BitConverter 或其他类，我可以读取整数和其他值作为 Big Endian 编码?

Is there a BitConverter or other class that supports .Net Core that I can read integers and other values as having Big Endian encoding?

我对需要编写一组辅助方法感觉不太好:

I don't feel good about needing to write a set of helper methods:

int GetBigEndianIntegerFromByteArray(byte[] data, int startIndex) {
    return (data[startIndex] << 24)
         | (data[startIndex + 1] << 16)
         | (data[startIndex + 2] << 8)
         | data[startIndex + 3];
}

推荐答案

从 .NET Core 2.1 开始，在静态类 System.Buffers.Binary.BinaryPrimitives

Since .NET Core 2.1 there is a unified API for this in static class System.Buffers.Binary.BinaryPrimitives

它包含用于 ReadOnlySpan 的 API 和用于原始类型(short/ushort、int/uint、long/ulong)的直接逆序

It contains API for ReadOnlySpan and direct inverse endianness for primitive types (short/ushort,int/uint,long/ulong)

private void GetBigEndianIntegerFromByteArray(ReadOnlySpan<byte> span,int offset)
{
    return BinaryPrimitives.ReadInt32BigEndian(span.Slice(offset));
}

System.Buffers.Binary.BinaryPrimitives 类是 .NET Core 2.1 的一部分，不需要 NuGet 包

System.Buffers.Binary.BinaryPrimitives class is a part of .NET Core 2.1 and no NuGet packages are needed

该类还包含 Try... 方法

Also this class contains Try... methods

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