ObjFW  Diff

of_string_utf8_get_position(const char *string, size_t index, size_t length)
{
	size_t i;

	for (i = 0; i <= index; i++)
		if OF_UNLIKELY ((string[i] & 0xC0) == 0x80)
			if (++index > length)
				return OF_INVALID_INDEX;

	return index;
}

@implementation OFString_UTF8
- init
{

	}

	if (cStringLength == 0)
		return of_range(0, 0);

	if (cStringLength > rangeLength ||
	    rangeStart + rangeLength > s->cStringLength)
		return of_range(OF_INVALID_INDEX, 0);

	if (options & OF_STRING_SEARCH_BACKWARDS) {
		for (i = rangeLength - cStringLength;; i--) {
			if (!memcmp(s->cString + rangeStart + i, cString,
			    cStringLength)) {
				range.location += of_string_utf8_get_index(
				    s->cString + rangeStart, i);
				range.length = [string length];

				return range;
			}

			/* Did not match and we're at the last char */
			if (i == 0)
				return of_range(OF_INVALID_INDEX, 0);
		}
	} else {
		for (i = 0; i <= rangeLength - cStringLength; i++) {
			if (!memcmp(s->cString + rangeStart + i, cString,
			    cStringLength)) {
				range.location += of_string_utf8_get_index(
				    s->cString + rangeStart, i);
				range.length = [string length];

				return range;
			}
		}
	}

	return of_range(OF_INVALID_INDEX, 0);
}

- (BOOL)containsString: (OFString*)string
{
	const char *cString = [string UTF8String];
	size_t i, cStringLength = [string UTF8StringLength];