23 #include <regex>

   178 		} else if (typeHeader.tag == 0x17 && typeHeader.tagClass == TagClass::Universal && typeHeader.definiteLength) {

   179 			// TODO: check available bytes before allocating buffer

   180 			std::string s;

   181 			s.resize(typeHeader.length);

   182 			read((uint8_t*) s.data(), typeHeader.length);

   183 

   184 			ASN1ContentHandler::DateTime dateTime;

   185 

   186 			std::smatch match;

   187 			if (std::regex_match(s, match, std::regex("([0-9]{2})([0-9]{2})([0-9]{2})([0-9]{2})([0-9]{2})([0-9]{2})Z"))) {

   188 				int i = 1;

   189 				uint32_t year = std::stoi(match[i++]);

   190 				dateTime.year = year < 50 ? 2000 + year : 1900 + year;

   191 				dateTime.month = std::stoi(match[i++]);

   192 				dateTime.day = std::stoi(match[i++]);

   193 				dateTime.hour = std::stoi(match[i++]);

   194 				dateTime.minute = std::stoi(match[i++]);

   195 				dateTime.precision = ASN1ContentHandler::DateTime::Precision::Second;

   196 				handlers.writeDateTime(ASN1ContentHandler::DateTimeType::UTCTime, dateTime);

   197 			} else {

   198 				// FIXME: decode more UTCTime formats:

   199 				// YYMMDDhhmmZ

   200 				// YYMMDDhhmm+hh'mm'

   201 				// YYMMDDhhmm-hh'mm'

   202 				// YYMMDDhhmmssZ

   203 				// YYMMDDhhmmss+hh'mm'

   204 				// YYMMDDhhmmss-hh'mm'

   205 				handlers.writeString(ASN1ContentHandler::StringType::UTF8String, "FIXME: UTCTime format not yet supported: " + s);

   206 			}

   207