C# 使用前导码或默认编码将字节数组转换为字符串

发布于 2024-08-15 12:58:41 字数 583 浏览 6 评论 0原文

我正在尝试将字节数组转换为字符串。字节数组包含一个前导码（如果使用的编码器有其中之一），如果字节数组中没有存储前导码，则必须指定默认编码。

我的代码看起来像这样，

public static string ArrayToStringUsingPreambleOrDefaultEncoder(byte[] bytes, Encoding defaultEncoder, out Encoding usedEncoder) {
  using (var mem = new MemoryStream(bytes))
  using (var reader = new StreamReader(mem, defaultEncoder, true)) {
    string result = reader.ReadToEnd();
    usedEncoder = reader.CurrentEncoding;
    return result;
  }
}

但它并没有达到我预期的效果。如何使 StreamReader 使用前导码指定的编码或如果未找到前导码则使用默认编码。我真的需要手动将所有已知编码器的前导码与数组的开头进行比较才能找到正确的编码器吗？

原文

Im trying to convert a byte array to a string. The byte array includes a preamble (if the used encoder had one of those), and you must specify the default encoding if no preamble is stored in the byte array.

My code looks like this

public static string ArrayToStringUsingPreambleOrDefaultEncoder(byte[] bytes, Encoding defaultEncoder, out Encoding usedEncoder) {
  using (var mem = new MemoryStream(bytes))
  using (var reader = new StreamReader(mem, defaultEncoder, true)) {
    string result = reader.ReadToEnd();
    usedEncoder = reader.CurrentEncoding;
    return result;
  }
}

But it doesnt do the trick as I would expect.
How do I make a StreamReader use the encoding specified by the preamble or a default encoding if no preamble is found. Do I really have to manually compare the preamble of ALL known encoders to the start of the array to find the right one?

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