ObjFW  Diff

		default:
			@throw [OFInvalidEncodingException exception];
		}

		j = 0;
		for (size_t i = 0; i < cStringLength; i++) {
			unsigned char character = (unsigned char)cString[i];
			of_unichar_t unichar;
			char buffer[4];
			size_t byteLength;

			if (character < tableOffset) {
				_s->cString[j++] = cString[i];
				continue;
			}

		[self release];
		@throw e;
	}

	return self;
}

- (instancetype)initWithCharacters: (const of_unichar_t *)characters
			    length: (size_t)length
{
	self = [super init];

	@try {
		size_t j;

		_s->cString = of_alloc((length * 4) + 1, 1);
		_s->length = length;
		_s->freeWhenDone = true;

		j = 0;
		for (size_t i = 0; i < length; i++) {
			of_unichar_t character =
			    (swap ? OF_BSWAP16(string[i]) : string[i]);
			size_t len;

			/* Missing high surrogate */
			if ((character & 0xFC00) == 0xDC00)
				@throw [OFInvalidEncodingException exception];

			return OFOrderedAscending;
#ifdef OF_HAVE_UNICODE_TABLES
	}

	i = j = 0;

	while (i < _s->cStringLength && j < otherCStringLength) {
		of_unichar_t c1, c2;
		ssize_t l1, l2;

		l1 = of_string_utf8_decode(_s->cString + i,
		    _s->cStringLength - i, &c1);
		l2 = of_string_utf8_decode(otherCString + j,
		    otherCStringLength - j, &c2);

		if (l1 <= 0 || l2 <= 0 || c1 > 0x10FFFF || c2 > 0x10FFFF)
			@throw [OFInvalidEncodingException exception];

		if (c1 >> 8 < OF_UNICODE_CASEFOLDING_TABLE_SIZE) {
			of_unichar_t tc =
			    of_unicode_casefolding_table[c1 >> 8][c1 & 0xFF];

			if (tc)
				c1 = tc;
		}

		if (c2 >> 8 < OF_UNICODE_CASEFOLDING_TABLE_SIZE) {
			of_unichar_t tc =
			    of_unicode_casefolding_table[c2 >> 8][c2 & 0xFF];

			if (tc)
				c2 = tc;
		}

		if (c1 > c2)

	if (_s->hashed)
		return _s->hash;

	OF_HASH_INIT(hash);

	for (size_t i = 0; i < _s->cStringLength; i++) {
		of_unichar_t c;
		ssize_t length;

		if ((length = of_string_utf8_decode(_s->cString + i,
		    _s->cStringLength - i, &c)) <= 0)
			@throw [OFInvalidEncodingException exception];

		OF_HASH_ADD(hash, (c & 0xFF0000) >> 16);

	_s->hash = hash;
	_s->hashed = true;

	return hash;
}

- (of_unichar_t)characterAtIndex: (size_t)idx
{
	of_unichar_t character;

	if (idx >= _s->length)
		@throw [OFOutOfRangeException exception];

	if (!_s->isUTF8)
		return _s->cString[idx];

	idx = of_string_utf8_get_position(_s->cString, idx, _s->cStringLength);

	if (of_string_utf8_decode(_s->cString + idx,
	    _s->cStringLength - idx, &character) <= 0)
		@throw [OFInvalidEncodingException exception];

	return character;
}

- (void)getCharacters: (of_unichar_t *)buffer inRange: (OFRange)range
{
	/* TODO: Could be slightly optimized */
	void *pool = objc_autoreleasePoolPush();
	const of_unichar_t *characters = self.characters;

	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length > _s->length)
		@throw [OFOutOfRangeException exception];

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

	objc_autoreleasePoolPop(pool);
}

- (OFRange)rangeOfString: (OFString *)string
		 options: (int)options
		   range: (OFRange)range

	[array makeImmutable];

	objc_autoreleasePoolPop(pool);

	return array;
}

- (const of_unichar_t *)characters
{
	of_unichar_t *buffer = of_alloc(_s->length, sizeof(of_unichar_t));
	size_t i = 0, j = 0;

	while (i < _s->cStringLength) {
		of_unichar_t c;
		ssize_t cLen;

		cLen = of_string_utf8_decode(_s->cString + i,
		    _s->cStringLength - i, &c);

		if (cLen <= 0 || c > 0x10FFFF) {
			free(buffer);
			@throw [OFInvalidEncodingException exception];
		}

		buffer[j++] = c;
		i += cLen;
	}

	return [[OFData dataWithItemsNoCopy: buffer
				      count: _s->length
				   itemSize: sizeof(of_unichar_t)
			       freeWhenDone: true] items];
}

- (const of_char32_t *)UTF32StringWithByteOrder: (OFByteOrder)byteOrder
{
	of_char32_t *buffer = of_alloc(_s->length + 1, sizeof(of_char32_t));
	size_t i = 0, j = 0;