ObjFW  Diff

	for (size_t i = 0; i < range.length; i++)
		buffer[i] = [self characterAtIndex: range.location + i];
}

- (bool)isEqual: (id)object
{
	void *pool;
	OFString *otherString;
	OFString *string;
	const of_unichar_t *characters, *otherCharacters;
	size_t length;

	if (object == self)
		return true;

	if (![object isKindOfClass: [OFString class]])
		return false;

	otherString = object;
	string = object;
	length = self.length;

	if (otherString.length != length)
	if (string.length != length)
		return false;

	pool = objc_autoreleasePoolPush();

	characters = self.characters;
	otherCharacters = otherString.characters;
	otherCharacters = string.characters;

	if (memcmp(characters, otherCharacters,
	    length * sizeof(of_unichar_t)) != 0) {
		objc_autoreleasePoolPop(pool);
		return false;
	}

}

- (id)mutableCopy
{
	return [[OFMutableString alloc] initWithString: self];
}

- (of_comparison_result_t)compare: (id <OFComparing>)object
- (of_comparison_result_t)compare: (OFString *)string
{
	void *pool;
	OFString *otherString;
	const of_unichar_t *characters, *otherCharacters;
	size_t minimumLength;

	if (object == self)
	if (string == self)
		return OF_ORDERED_SAME;

	if (![(id)object isKindOfClass: [OFString class]])
	if (![string isKindOfClass: [OFString class]])
		@throw [OFInvalidArgumentException exception];

	otherString = (OFString *)object;
	minimumLength = (self.length > otherString.length
	    ? otherString.length : self.length);
	minimumLength = (self.length > string.length
	    ? string.length : self.length);

	pool = objc_autoreleasePoolPush();

	characters = self.characters;
	otherCharacters = otherString.characters;
	otherCharacters = string.characters;

	for (size_t i = 0; i < minimumLength; i++) {
		if (characters[i] > otherCharacters[i]) {
			objc_autoreleasePoolPop(pool);
			return OF_ORDERED_DESCENDING;
		}

		if (characters[i] < otherCharacters[i]) {
			objc_autoreleasePoolPop(pool);
			return OF_ORDERED_ASCENDING;
		}
	}

	objc_autoreleasePoolPop(pool);

	if (self.length > otherString.length)
	if (self.length > string.length)
		return OF_ORDERED_DESCENDING;
	if (self.length < otherString.length)
	if (self.length < string.length)
		return OF_ORDERED_ASCENDING;

	return OF_ORDERED_SAME;
}

- (of_comparison_result_t)caseInsensitiveCompare: (OFString *)otherString
- (of_comparison_result_t)caseInsensitiveCompare: (OFString *)string
{
	void *pool = objc_autoreleasePoolPush();
	const of_unichar_t *characters, *otherCharacters;
	size_t length, otherLength, minimumLength;

	if (otherString == self)
	if (string == self)
		return OF_ORDERED_SAME;

	characters = self.characters;
	otherCharacters = otherString.characters;
	otherCharacters = string.characters;
	length = self.length;
	otherLength = otherString.length;
	otherLength = string.length;

	minimumLength = (length > otherLength ? otherLength : length);

	for (size_t i = 0; i < minimumLength; i++) {
		of_unichar_t c = characters[i];
		of_unichar_t oc = otherCharacters[i];