ObjFW  Diff

{
	self = [super init];

	@try {
		if (itemSize == 0)
			@throw [OFInvalidArgumentException exception];

		_items = [self allocMemoryWithSize: itemSize
		_items = of_malloc(count, itemSize);
					     count: count];
		_itemSize = itemSize;
		_count = count;
		_freeWhenDone = true;

		memcpy(_items, items, count * itemSize);
	} @catch (id e) {
		[self release];
		@throw e;
	}

			    exceptionWithURL: URL];

		stream = [URLHandler openItemAtURL: URL
					      mode: @"r"];

		_itemSize = 1;
		_count = 0;
		_freeWhenDone = true;

		pageSize = [OFSystemInfo pageSize];
		buffer = of_malloc(1, pageSize);

		@try {
			while (!stream.atEndOfStream) {
				size_t length = [stream
				    readIntoBuffer: buffer
					    length: pageSize];

				if (SIZE_MAX - _count < length)
					@throw [OFOutOfRangeException
					    exception];

				_items = [self resizeMemory: _items
						       size: _count + length];
				_items = of_realloc(_items, _count + length, 1);
				memcpy(_items + _count, buffer, length);
				_count += length;
			}
		} @finally {
			free(buffer);
		}

		const char *cString;

		if (count % 2 != 0)
			@throw [OFInvalidFormatException exception];

		count /= 2;

		_items = [self allocMemoryWithSize: count];
		_items = of_malloc(count, 1);
		_itemSize = 1;
		_count = count;
		_freeWhenDone = true;

		cString = [string
		    cStringWithEncoding: OF_STRING_ENCODING_ASCII];

		for (size_t i = 0; i < count; i++) {
			uint8_t c1 = cString[2 * i];
			uint8_t c2 = cString[2 * i + 1];