FixedBufferExtensions.cs

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using System.Runtime.InteropServices;
 
namespace System;
 
internal static class FixedBufferExtensions
{
    internal unsafe static string GetStringFromFixedBuffer(this ReadOnlySpan<char> span)
    {
        fixed (char* value = &MemoryMarshal.GetReference(span))
        {
            return new string(value, 0, span.GetFixedBufferStringLength());
        }
    }
 
    internal static int GetFixedBufferStringLength(this ReadOnlySpan<char> span)
    {
        int num = span.IndexOf('\0');
        if (num >= 0)
        {
            return num;
        }
        return span.Length;
    }
 
    internal static bool FixedBufferEqualsString(this ReadOnlySpan<char> span, string value)
    {
        if (value == null || value.Length > span.Length)
        {
            return false;
        }
        int i;
        for (i = 0; i < value.Length; i++)
        {
            if (value[i] == '\0' || value[i] != span[i])
            {
                return false;
            }
        }
        if (i != span.Length)
        {
            return span[i] == '\0';
        }
        return true;
    }
}