ObjFW  Diff

	void *pool = objc_autoreleasePoolPush();
	OFString *oldFileName = _fileName, *oldDirectoryName = _directoryName;
	size_t lastSlash;

	lastSlash = [fileName rangeOfString: @"/"
				    options: OFStringSearchBackwards].location;
	if (lastSlash != OFNotFound) {
		_fileName = [[fileName substringWithRange: OFMakeRange(
		_fileName = [[fileName substringFromIndex: lastSlash + 1] copy];
		    lastSlash + 1, fileName.length - lastSlash - 1)] copy];
		[oldFileName release];

		_directoryName = [[fileName substringWithRange:
		_directoryName = [[fileName substringToIndex: lastSlash] copy];
		    OFMakeRange(0, lastSlash)] copy];
		[oldDirectoryName release];
	} else {
		_fileName = [fileName copy];
		[oldFileName release];

		[_directoryName release];
		_directoryName = nil;