ObjFW  Diff

- (void)getCharacters: (of_unichar_t*)buffer
	      inRange: (of_range_t)range
{
	/* TODO: Could be slightly optimized */
	void *pool = objc_autoreleasePoolPush();
	const of_unichar_t *unicodeString = [self unicodeString];

	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length > s->length)
		@throw [OFOutOfRangeException exceptionWithClass: [self class]];

	memcpy(buffer, unicodeString + range.location,
	    range.length * sizeof(of_unichar_t));

	objc_autoreleasePoolPop(pool);
}

- (of_range_t)rangeOfString: (OFString*)string
		    options: (of_string_search_options_t)options
		      range: (of_range_t)range
{
	const char *cString = [string UTF8String];
	size_t i, cStringLength = [string UTF8StringLength];
	size_t rangeLocation, rangeLength;

	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length > s->length)
		@throw [OFOutOfRangeException exceptionWithClass: [self class]];

	if (s->isUTF8) {
		rangeLocation = of_string_utf8_get_position(
		    s->cString, range.location, s->cStringLength);
		rangeLength = of_string_utf8_get_position(
		    s->cString + rangeLocation, range.length,
		    s->cStringLength - rangeLocation);
	} else {
		rangeLocation = range.location;
		rangeLength = range.length;
	}

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

	if (cStringLength > rangeLength)

		return of_range(OF_NOT_FOUND, 0);

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

				return range;
			}

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

				return range;
			}
		}
	}

}

- (OFString*)substringWithRange: (of_range_t)range
{
	size_t start = range.location;
	size_t end = range.location + range.length;

	if (range.length > SIZE_MAX - range.location || end > s->length)
		@throw [OFOutOfRangeException exceptionWithClass: [self class]];

	if (s->isUTF8) {
		start = of_string_utf8_get_position(s->cString, start,
		    s->cStringLength);
		end = of_string_utf8_get_position(s->cString, end,
		    s->cStringLength);