int GetChars(byte[] bytes, int byteIndex, int byteCount,
char[] chars, int charIndex,
ref DecoderFallbackBuffer buffer)
{
if (bytes == null)
throw new ArgumentNullException("bytes");
if (chars == null)
throw new ArgumentNullException("chars");
if (byteIndex < 0 || byteIndex > bytes.Length)
throw new ArgumentOutOfRangeException("byteIndex");
if (byteCount < 0 || byteCount > (bytes.Length - byteIndex))
throw new ArgumentOutOfRangeException("byteCount");
if (charIndex < 0 || charIndex > chars.Length)
throw new ArgumentOutOfRangeException("charIndex");
if ((chars.Length - charIndex) < byteCount)
throw new ArgumentException("Insufficient Space");
var count = byteCount;
while (count-- > 0)
{
var c = (char) bytes[byteIndex++];
if (c < '\x80')
chars[charIndex++] = c;
else
{
if (buffer == null)
buffer = DecoderFallback.CreateFallbackBuffer();
var thisByte = new byte[] {bytes[byteIndex - 1]};
buffer.Fallback(thisByte, 0);
while (buffer.Remaining > 0)
{
if (charIndex < chars.Length)
{
chars[charIndex++] = buffer.GetNextChar();
continue;
}
throw new ArgumentException(
"The output char buffer is too small to contain the " +
"decoded characters.");
}
}
}
return byteCount;
}
