C# dotnet 解决 Path 获取文件名路径在 Windows 构建在 Linux 执行问题

public void DoProcessing()
{
    TraceMessage("Something happened.");
}

public void TraceMessage(string message,
        [System.Runtime.CompilerServices.CallerMemberName] string memberName = "",
        [System.Runtime.CompilerServices.CallerFilePath] string sourceFilePath = "",
        [System.Runtime.CompilerServices.CallerLineNumber] int sourceLineNumber = 0)
{
    System.Diagnostics.Trace.WriteLine("message: " + message);
    System.Diagnostics.Trace.WriteLine("member name: " + memberName);
    System.Diagnostics.Trace.WriteLine("source file path: " + sourceFilePath);
    System.Diagnostics.Trace.WriteLine("source line number: " + sourceLineNumber);
}

// Sample Output:
//  message: Something happened.
//  member name: DoProcessing
//  source file path: c:\Users\username\Documents\Visual Studio 2020\Projects\CallerInfoCS\CallerInfoCS\Form1.cs
//  source line number: 31

        public static void LogInfo(this ILogger logger, string message,
            string traceId = null,
            string userId = null,
            [System.Runtime.CompilerServices.CallerMemberName]
            string memberName = "",
            [System.Runtime.CompilerServices.CallerFilePath]
            string sourceFilePath = "",
            [System.Runtime.CompilerServices.CallerLineNumber]
            int sourceLineNumber = 0,
            params string[] tags)
        {
            // 刚好在 Linux 下构建的在 Linux 下运行，而在 Windows 构建的库在 Windows 下执行。此时使用 GetFileNameWithoutExtension 能保持输入路径和解析相同
            // 假定在 Windows 下构建而在 Linux 下构建，只是让路径变长而已，我相信咱的日志系统炸不了…… 或者说，炸了再说
            // 炸了的解决方法是在 dotnet runtime\src\libraries\System.Private.CoreLib\src\System\IO\Path.cs 的 GetFileName 方法里面将 `PathInternal.IsDirectorySeparator(path[i])` 替换为实际需要的 \ 或 / 符号
            var classFile = Path.GetFileNameWithoutExtension(sourceFilePath);

            // 忽略代码
        }

        public static ReadOnlySpan<char> GetFileNameWithoutExtension(ReadOnlySpan<char> path)
        {
            ReadOnlySpan<char> fileName = GetFileName(path);
            int lastPeriod = fileName.LastIndexOf('.');
            return lastPeriod == -1 ?
                fileName : // No extension was found
                fileName.Slice(0, lastPeriod);
        }

        public static ReadOnlySpan<char> GetFileName(ReadOnlySpan<char> path)
        {
            int root = GetPathRoot(path).Length;

            // We don't want to cut off "C:\file.txt:stream" (i.e. should be "file.txt:stream")
            // but we *do* want "C:Foo" => "Foo". This necessitates checking for the root.

            for (int i = path.Length; --i >= 0;)
            {
                if (i < root || PathInternal.IsDirectorySeparator(path[i]))
                    return path.Slice(i + 1, path.Length - i - 1);
            }

            return path;
        }

        public static ReadOnlySpan<char> GetFileNameWithoutExtension(ReadOnlySpan<char> path)
        {
            ReadOnlySpan<char> fileName = GetFileName(path);
            int lastPeriod = fileName.LastIndexOf('.');
            return lastPeriod == -1 ?
                fileName : // No extension was found
                fileName.Slice(0, lastPeriod);
        }

        public static ReadOnlySpan<char> GetFileName(ReadOnlySpan<char> path)
        {
            int root = GetPathRoot(path).Length;

            // We don't want to cut off "C:\file.txt:stream" (i.e. should be "file.txt:stream")
            // but we *do* want "C:Foo" => "Foo". This necessitates checking for the root.

            for (int i = path.Length; --i >= 0;)
            {
                if (i < root || path[i] == '/' || path[i] == '\\')
                    return path.Slice(i + 1, path.Length - i - 1);
            }

            return path;
        }