ObjFW  Check-in [1efd40d895]

{
	const char *cString;
	size_t i, last, length;
	int PIState = 0;
	OFString *attribute = nil;
	OFMutableString *value = nil;
	char piDelimiter = 0;
	bool hasVersion = false;

	if (!_acceptProlog)
		return false;

	_acceptProlog = false;

	pi = [pi substringWithRange: of_range(3, [pi length] - 3)];

			if (cString[i] != piDelimiter)
				continue;

			value = [OFMutableString
			    stringWithUTF8String: cString + last
					  length: i - last];

			if ([attribute isEqual: @"version"])
			if ([attribute isEqual: @"version"]) {
				if (![value hasPrefix: @"1."])
					return false;

				hasVersion = true;
			}

			if ([attribute isEqual: @"encoding"]) {
				[value lowercase];

				if ([value isEqual: @"utf-8"])
					_encoding = OF_STRING_ENCODING_UTF_8;
				else if ([value isEqual: @"iso-8859-1"])

			last = i + 1;
			PIState = 0;

			break;
		}
	}

	if (PIState != 0)
	if (PIState != 0 || !hasVersion)
		return false;

	return true;
}

/* Inside processing instructions */
- (void)OF_parseInProcessingInstructionsWithBuffer: (const char*)buffer