ObjFW  Check-in [328decd247]

	OFString *ret;

	/* Look if there's a line or \0 in our cache */
	if (cache != NULL) {
		for (i = 0; i < cache_len; i++) {
			if (OF_UNLIKELY(cache[i] == '\n' ||
			    cache[i] == '\0')) {
				ret_c = [self allocMemoryWithSize: i + 1];
				memcpy(ret_c, cache, i);
				ret_c[i] = '\0';

				@try {
					tmp = [self
					    allocMemoryWithSize: cache_len -
								 i - 1];
				} @catch (OFException *e) {
					[self freeMemory: ret_c];
					@throw e;
				}
				memcpy(tmp, cache + i + 1, cache_len - i - 1);

				[self freeMemory: cache];
				cache = tmp;
				cache_len = cache_len - i - 1;

				@try {
					ret = [OFString
					    stringWithCString: ret_c];
				} @finally {
					[self freeMemory: ret_c];
				}
				return ret;
			}
		}
	}

	/* Read until we get a newline or \0 */
	tmp = [self allocMemoryWithSize: pagesize];

	for (;;) {
		if ([self atEndOfStream]) {
			[self freeMemory: tmp];

			if (cache == NULL)
				return nil;

			ret_c = [self allocMemoryWithSize: cache_len + 1];
			memcpy(ret_c, cache, cache_len);
			ret_c[cache_len] = '\0';

			@try {
				ret = [OFString stringWithCString: ret_c];
			} @finally {
				[self freeMemory: ret_c];
			}


			[self freeMemory: cache];
			cache = NULL;
			cache_len = 0;

			return ret;
		}