Refactoring generic message components to awips namespace

wxdata/source/scwx/awips/wmo_header.cpp

@@ -0,0 +1,251 @@
+#include <scwx/awips/wmo_header.hpp>
+#include <scwx/util/streams.hpp>
+
+#include <istream>
+#include <sstream>
+#include <string>
+
+#include <boost/log/trivial.hpp>
+
+#ifdef WIN32
+#   include <WinSock2.h>
+#else
+#   include <arpa/inet.h>
+#endif
+
+namespace scwx
+{
+namespace awips
+{
+
+static const std::string logPrefix_ = "[scwx::awips::wmo_header] ";
+
+class WmoHeaderImpl
+{
+public:
+   explicit WmoHeaderImpl() :
+       sequenceNumber_ {},
+       dataType_ {},
+       geographicDesignator_ {},
+       bulletinId_ {},
+       icao_ {},
+       dateTime_ {},
+       bbbIndicator_ {},
+       productCategory_ {},
+       productDesignator_ {}
+   {
+   }
+   ~WmoHeaderImpl() = default;
+
+   std::string sequenceNumber_;
+   std::string dataType_;
+   std::string geographicDesignator_;
+   std::string bulletinId_;
+   std::string icao_;
+   std::string dateTime_;
+   std::string bbbIndicator_;
+   std::string productCategory_;
+   std::string productDesignator_;
+};
+
+WmoHeader::WmoHeader() : p(std::make_unique<WmoHeaderImpl>()) {}
+WmoHeader::~WmoHeader() = default;
+
+WmoHeader::WmoHeader(WmoHeader&&) noexcept = default;
+WmoHeader& WmoHeader::operator=(WmoHeader&&) noexcept = default;
+
+const std::string& WmoHeader::sequence_number() const
+{
+   return p->sequenceNumber_;
+}
+
+const std::string& WmoHeader::data_type() const
+{
+   return p->dataType_;
+}
+
+const std::string& WmoHeader::geographic_designator() const
+{
+   return p->geographicDesignator_;
+}
+
+const std::string& WmoHeader::bulletin_id() const
+{
+   return p->bulletinId_;
+}
+
+const std::string& WmoHeader::icao() const
+{
+   return p->icao_;
+}
+
+const std::string& WmoHeader::date_time() const
+{
+   return p->dateTime_;
+}
+
+const std::string& WmoHeader::bbb_indicator() const
+{
+   return p->bbbIndicator_;
+}
+
+const std::string& WmoHeader::product_category() const
+{
+   return p->productCategory_;
+}
+
+const std::string& WmoHeader::product_designator() const
+{
+   return p->productDesignator_;
+}
+
+bool WmoHeader::Parse(std::istream& is)
+{
+   bool headerValid = true;
+
+   std::string sohLine;
+   std::string sequenceLine;
+   std::string wmoLine;
+   std::string awipsLine;
+
+   if (is.peek() == 0x01)
+   {
+      std::getline(is, sohLine);
+      std::getline(is, sequenceLine);
+   }
+
+   std::getline(is, wmoLine);
+   std::getline(is, awipsLine);
+
+   if (is.eof())
+   {
+      BOOST_LOG_TRIVIAL(debug) << logPrefix_ << "Reached end of file";
+      headerValid = false;
+   }
+   else if (!sohLine.empty() && !sohLine.ends_with("\r\r"))
+   {
+      BOOST_LOG_TRIVIAL(debug)
+         << logPrefix_ << "Start of Heading Line is malformed";
+      headerValid = false;
+   }
+   else if (!sequenceLine.empty() && !sequenceLine.ends_with(" \r\r"))
+   {
+      BOOST_LOG_TRIVIAL(debug) << logPrefix_ << "Sequence Line is malformed";
+      headerValid = false;
+   }
+   else if (!wmoLine.ends_with("\r\r"))
+   {
+      BOOST_LOG_TRIVIAL(debug)
+         << logPrefix_ << "WMO Abbreviated Heading Line is malformed";
+      headerValid = false;
+   }
+   else if (!awipsLine.ends_with("\r\r"))
+   {
+      BOOST_LOG_TRIVIAL(debug)
+         << logPrefix_ << "AWIPS Identifier Line is malformed";
+      headerValid = false;
+   }
+   else
+   {
+      // Remove delimiters from the end of the line
+      if (!sequenceLine.empty())
+      {
+         sequenceLine.erase(sequenceLine.length() - 3);
+      }
+
+      wmoLine.erase(wmoLine.length() - 2);
+      awipsLine.erase(awipsLine.length() - 2);
+   }
+
+   // Transmission Header:
+   // [SOH]
+   // nnn
+
+   if (headerValid && !sequenceLine.empty())
+   {
+      p->sequenceNumber_ = sequenceLine;
+   }
+
+   // WMO Abbreviated Heading Line:
+   // T1T2A1A2ii CCCC YYGGgg (BBB)
+
+   if (headerValid)
+   {
+      std::string              token;
+      std::istringstream       wmoTokens(wmoLine);
+      std::vector<std::string> wmoTokenList;
+
+      while (wmoTokens >> token)
+      {
+         wmoTokenList.push_back(std::move(token));
+      }
+
+      if (wmoTokenList.size() < 3 || wmoTokenList.size() > 4)
+      {
+         BOOST_LOG_TRIVIAL(debug)
+            << logPrefix_ << "Invalid number of WMO tokens";
+         headerValid = false;
+      }
+      else if (wmoTokenList[0].size() != 6)
+      {
+         BOOST_LOG_TRIVIAL(debug) << logPrefix_ << "WMO identifier malformed";
+         headerValid = false;
+      }
+      else if (wmoTokenList[1].size() != 4)
+      {
+         BOOST_LOG_TRIVIAL(debug) << logPrefix_ << "ICAO malformed";
+         headerValid = false;
+      }
+      else if (wmoTokenList[2].size() != 6)
+      {
+         BOOST_LOG_TRIVIAL(debug) << logPrefix_ << "Date/time malformed";
+         headerValid = false;
+      }
+      else if (wmoTokenList.size() == 4 && wmoTokenList[3].size() != 3)
+      {
+         // BBB indicator is optional
+         BOOST_LOG_TRIVIAL(debug) << logPrefix_ << "BBB indicator malformed";
+         headerValid = false;
+      }
+      else
+      {
+         p->dataType_             = wmoTokenList[0].substr(0, 2);
+         p->geographicDesignator_ = wmoTokenList[0].substr(2, 2);
+         p->bulletinId_           = wmoTokenList[0].substr(4, 2);
+         p->icao_                 = wmoTokenList[1];
+         p->dateTime_             = wmoTokenList[2];
+
+         if (wmoTokenList.size() == 4)
+         {
+            p->bbbIndicator_ = wmoTokenList[3];
+         }
+         else
+         {
+            p->bbbIndicator_ = "";
+         }
+      }
+   }
+
+   // AWIPS Identifer Line:
+   // NNNxxx
+
+   if (headerValid)
+   {
+      if (awipsLine.size() != 6)
+      {
+         BOOST_LOG_TRIVIAL(debug)
+            << logPrefix_ << "AWIPS Identifier Line bad size";
+         headerValid = false;
+      }
+      else
+      {
+         p->productCategory_   = awipsLine.substr(0, 3);
+         p->productDesignator_ = awipsLine.substr(3, 3);
+      }
+   }
+
+   return headerValid;
+}
+
+} // namespace awips
+} // namespace scwx