ObjFW  Check-in [9d23c7e1f9]

	if ((URLHandler = [OFURLHandler handlerForURL: URL]) == nil)
		@throw [OFUnsupportedProtocolException exceptionWithURL: URL];

	[URLHandler createDirectoryAtURL: URL];
}

- (void)createDirectoryAtURL: (OFURL *)URL
	       createParents: (bool)createParents
{
	void *pool = objc_autoreleasePoolPush();
	OFMutableURL *mutableURL;
	OFArray OF_GENERIC(OFString *) *components;
	OFMutableArray OF_GENERIC(OFURL *) *componentURLs;
	size_t componentURLsCount;
	ssize_t i;

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

	if (!createParents) {
		[self createDirectoryAtURL: URL];
		return;

		 * If we didn't fail because any of the parents is missing,
		 * there is no point in trying to create the parents.
		 */
		if (e.errNo != ENOENT)
			@throw e;
	}

	/*
	 * Because we might be sandboxed (and for remote URLs don't even know
	 * anything at all), we generate the URL for every component. We then
	 * iterate them in reverse order until we find the first existing
	 * directory, and then create subdirectories from there.
	 */
	mutableURL = [[URL mutableCopy] autorelease];
	mutableURL.URLEncodedPath = @"/";
	components = URL.pathComponents;
	componentURLs = [OFMutableArray arrayWithCapacity: components.count];

	for (OFString *component in components) {
		[mutableURL appendPathComponent: component];

		if (![mutableURL.URLEncodedPath isEqual: @"/"])
			[componentURLs addObject:
			    [[mutableURL copy] autorelease]];
	}

	componentURLsCount = componentURLs.count;
	for (i = componentURLsCount - 1; i > 0; i--) {
		if ([self directoryExistsAtURL:
		    [componentURLs objectAtIndex: i]])
			break;
	}

	if (++i == (ssize_t)componentURLsCount) {
		/*
		 * The URL exists, even though before we made sure it did not.
		 * That means it was created in the meantime by something else,
		 * so we're done here.
		 */
		objc_autoreleasePoolPop(pool);
		return;
	}

	for (; i < (ssize_t)componentURLsCount; i++)
		[self createDirectoryAtURL: [componentURLs objectAtIndex: i]];

	objc_autoreleasePoolPop(pool);
}

#ifdef OF_HAVE_FILES
- (void)createDirectoryAtPath: (OFString *)path
{
	void *pool = objc_autoreleasePoolPush();