C# bom头清理

C# bom头清理 工具方法

public bool clean(string path)
{
   
    byte[] bs = File.ReadAllBytes(path);
    byte[] bomBuffer = new byte[] {
    0xef, 0xbb, 0xbf };
    if (bs.Length<=3)
    {
   
        return false;
    }
    if (bs[0] == bomBuffer[0]
        && bs[1] == bomBuffer[1]
        && bs[2] == bomBuffer[2])
    {
   
        using (var sink = new StreamWriter(path, false, new System.Text.UTF8Encoding(false)))
        {
   
            sink.Write(new UTF8Encoding(false).GetString(bs, 3, bs.Length - 3));
        }
    }
    return false;
}