public static string DecodeUtf8(byte* bytes, int byteCount, byte[] prefix, MetadataStringDecoder utf8Decoder)
{
Debug.Assert(utf8Decoder != null);
if (prefix != null)
{
return DecodeUtf8Prefixed(bytes, byteCount, prefix, utf8Decoder);
}
if (byteCount == 0)
{
return String.Empty;
}
return utf8Decoder.GetString(bytes, byteCount);
}
private static string DecodeUtf8Prefixed(byte* bytes, int byteCount, byte[] prefix, MetadataStringDecoder utf8Decoder)
{
Debug.Assert(utf8Decoder != null);
int prefixedByteCount = byteCount + prefix.Length;
if (prefixedByteCount == 0)
{
return String.Empty;
}
byte[] buffer = AcquireBuffer(prefixedByteCount);
prefix.CopyTo(buffer, 0);
Marshal.Copy((IntPtr)bytes, buffer, prefix.Length, byteCount);
string result;
fixed (byte* prefixedBytes = buffer)
{
result = utf8Decoder.GetString(prefixedBytes, prefixedByteCount);
}
ReleaseBuffer(buffer);
return result;
}
