Function syncsearch

3rdparty/Amalgamate/juce_core_amalgam.cpp:22852–22870

Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found or when out of input. When called, *have is the number of pattern bytes found in order so far, in 0..3. On return *have is updated to the new state. If on return *have equals four, then the pattern was found and the return value is how many bytes were read including the last byte of the pattern. If *have

   zero for the first call.
 */
local unsigned syncsearch (unsigned FAR *have, unsigned char FAR *buf, unsigned len)
{
	unsigned got;
	unsigned next;

	got = *have;
	next = 0;
	while (next < len && got < 4) {
		if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))
			got++;
		else if (buf[next])
			got = 0;
		else
			got = 4 - got;
		next++;
	}
	*have = got;
	return next;
}

int ZEXPORT inflateSync (z_streamp strm)
{