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 available.");
}
int count = byteCount;
while (count-- > 0)
{
char c = (char)bytes [byteIndex++];
if (c < 0x80)
{
chars [charIndex++] = c;
}
else
{
if (buffer == null)
{
buffer = DecoderFallback.CreateFallbackBuffer();
}
var thisByte = new [] { 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);
}
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 available.");
int count = byteCount;
while (count-- > 0) {
char c = (char) bytes [byteIndex++];
if (c < 0x80) {
chars [charIndex++] = c;
} else {
if (buffer == null)
buffer = DecoderFallback.CreateFallbackBuffer ();
var thisByte = new [] { 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;
}
// for GetChars()
static unsafe void Fallback (object provider, ref DecoderFallbackBuffer buffer, ref byte[] bufferArg, byte* bytes, long byteIndex, uint size, char* chars, ref int charIndex)
{
if (buffer == null) {
var fallback = provider as DecoderFallback;
if (fallback != null)
buffer = fallback.CreateFallbackBuffer ();
else
buffer = ((Decoder) provider).FallbackBuffer;
}
if (bufferArg == null)
bufferArg = new byte [1];
for (int i = 0; i < size; i++) {
bufferArg [0] = bytes [byteIndex + i];
buffer.Fallback (bufferArg, 0);
while (buffer.Remaining > 0)
chars [charIndex++] = buffer.GetNextChar ();
buffer.Reset ();
}
}
