Portable.Text.EncoderFallback.CreateFallbackBuffer C# (CSharp) Method

		public abstract EncoderFallbackBuffer CreateFallbackBuffer ();
	}

        public void HandleFallback(ref EncoderFallbackBuffer buffer,
                                   char[] chars, ref int charIndex, ref int charCount,
                                   byte[] bytes, ref int byteIndex, ref int byteCount, object state)
        {
            if (buffer == null)
            {
                buffer = EncoderFallback.CreateFallbackBuffer();
            }

            if (charCount > 1 && (Char.IsSurrogate(chars[charIndex]) && Char.IsSurrogate(chars[charIndex + 1])))
            {
                buffer.Fallback(chars[charIndex], chars[charIndex + 1], charIndex);
                charIndex++;
                charCount--;
            }
            else
            {
                buffer.Fallback(chars[charIndex], charIndex);
            }

            char[] tmp = new char[buffer.Remaining];
            int    idx = 0;

            while (buffer.Remaining > 0)
            {
                tmp[idx++] = buffer.GetNextChar();
            }

            var len = state == null?
                      GetBytes(tmp, 0, tmp.Length, bytes, byteIndex)
                          : GetBytesInternal(tmp, 0, tmp.Length, bytes, byteIndex, true, state);

            byteIndex += len;
            byteCount -= len;
        }