ObjFW  Diff

			if ((t = table[0][(uint8_t)_s->cString[i]]) != 0)
				_s->cString[i] = t;
		}

		return;
	}

	unicodeLen = [self length];
	unicodeString = [self allocMemoryWithSize: sizeof(of_unichar_t)
					    count: unicodeLen];

	i = j = 0;
	newCStringLength = 0;

	while (i < _s->cStringLength) {

- (void)appendString: (OFString *)string
{
	size_t UTF8StringLength;

	if (string == nil)
		@throw [OFInvalidArgumentException exception];

	UTF8StringLength = [string UTF8StringLength];

	_s->hashed = false;
	_s->cString = [self resizeMemory: _s->cString
				    size: _s->cStringLength +
					  UTF8StringLength + 1];
	memcpy(_s->cString + _s->cStringLength, [string UTF8String],
	    UTF8StringLength);

	_s->cStringLength += UTF8StringLength;
	_s->length += [string length];

	_s->cString[_s->cStringLength] = 0;

	if ([string isKindOfClass: [OFString_UTF8 class]] ||
	    [string isKindOfClass: [OFMutableString_UTF8 class]]) {
		if (((OFString_UTF8 *)string)->_s->isUTF8)
			_s->isUTF8 = true;

{
	char *UTF8String;
	int UTF8StringLength;

	if (format == nil)
		@throw [OFInvalidArgumentException exception];

	if ((UTF8StringLength = of_vasprintf(&UTF8String, [format UTF8String],
	    arguments)) == -1)
		@throw [OFInvalidFormatException exception];

	@try {
		[self appendUTF8String: UTF8String
				length: UTF8StringLength];
	} @finally {

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

	if (_s->isUTF8)
		idx = of_string_utf8_get_position(_s->cString, idx,
		    _s->cStringLength);

	newCStringLength = _s->cStringLength + [string UTF8StringLength];
	_s->hashed = false;
	_s->cString = [self resizeMemory: _s->cString
				    size: newCStringLength + 1];

	memmove(_s->cString + idx + [string UTF8StringLength],
	    _s->cString + idx, _s->cStringLength - idx);
	memcpy(_s->cString + idx, [string UTF8String],
	    [string UTF8StringLength]);
	_s->cString[newCStringLength] = '\0';

	_s->cStringLength = newCStringLength;
	_s->length += [string length];

	if ([string isKindOfClass: [OFString_UTF8 class]] ||
	    [string isKindOfClass: [OFMutableString_UTF8 class]]) {
		if (((OFString_UTF8 *)string)->_s->isUTF8)
			_s->isUTF8 = true;
	} else
		_s->isUTF8 = true;

	if (replacement == nil)
		@throw [OFInvalidArgumentException exception];

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

	newLength = _s->length - range.length + [replacement length];

	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);
	}

	newCStringLength = _s->cStringLength - (end - start) +
	    [replacement UTF8StringLength];
	_s->hashed = false;

	/*
	 * If the new string is bigger, we need to resize it first so we can
	 * memmove() the rest of the string to the end.
	 *
	 * We must not resize the string if the new string is smaller, because
	 * then we can't memmove() the rest of the string forward as the rest is
	 * lost due to the resize!
	 */
	if (newCStringLength > _s->cStringLength)
		_s->cString = [self resizeMemory: _s->cString
					    size: newCStringLength + 1];

	memmove(_s->cString + start + [replacement UTF8StringLength],
	    _s->cString + end, _s->cStringLength - end);
	memcpy(_s->cString + start, [replacement UTF8String],
	    [replacement UTF8StringLength]);
	_s->cString[newCStringLength] = '\0';

	/*
	 * If the new string is smaller, we can safely resize it now as we're
	 * done with memmove().
	 */
	if (newCStringLength < _s->cStringLength)

}

- (void)replaceOccurrencesOfString: (OFString *)string
			withString: (OFString *)replacement
			   options: (int)options
			     range: (of_range_t)range
{
	const char *searchString = [string UTF8String];
	const char *replacementString = [replacement UTF8String];
	size_t searchLength = [string UTF8StringLength];
	size_t replacementLength = [replacement UTF8StringLength];
	size_t last, newCStringLength, newLength;
	char *newCString;

	if (string == nil || replacement == nil)
		@throw [OFInvalidArgumentException exception];

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

	if (_s->isUTF8) {
		range.location = of_string_utf8_get_position(_s->cString,
		    range.location, _s->cStringLength);
		range.length = of_string_utf8_get_position(
		    _s->cString + range.location, range.length,
		    _s->cStringLength - range.location);
	}

	if ([string UTF8StringLength] > range.length)
		return;

	newCString = NULL;
	newCStringLength = 0;
	newLength = _s->length;
	last = 0;

	for (size_t i = range.location; i <= range.length - searchLength; i++) {
		if (memcmp(_s->cString + i, searchString, searchLength) != 0)
			continue;

		@try {
			newCString = [self
			    resizeMemory: newCString
				    size: newCStringLength + i - last +
					  replacementLength + 1];
		} @catch (id e) {
			[self freeMemory: newCString];
			@throw e;
		}
		memcpy(newCString + newCStringLength, _s->cString + last,
		    i - last);
		memcpy(newCString + newCStringLength + i - last,
		    replacementString, replacementLength);

		newCStringLength += i - last + replacementLength;
		newLength = newLength - [string length] + [replacement length];

		i += searchLength - 1;
		last = i + 1;
	}

	@try {
		newCString = [self resizeMemory: newCString