Use HH date library when not using MSVC

wxdata/include/scwx/util/time.hpp

@@ -2,16 +2,26 @@
 
 #include <chrono>
 
+#if !defined(_MSC_VER)
+#   include <date/tz.h>
+#endif
+
 namespace scwx
 {
 namespace util
 {
 
+#if defined(_MSC_VER)
+typedef std::chrono::time_zone time_zone;
+#else
+typedef date::time_zone time_zone;
+#endif
+
 std::chrono::system_clock::time_point TimePoint(uint32_t modifiedJulianDate,
                                                 uint32_t milliseconds);
 
 std::string TimeString(std::chrono::system_clock::time_point time,
-                       const std::chrono::time_zone*         timeZone = nullptr,
+                       const time_zone*                      timeZone = nullptr,
                        bool                                  epochValid = true);
 
 } // namespace util

wxdata/source/scwx/awips/coded_time_motion_location.cpp

@@ -8,6 +8,10 @@
 
 #include <sstream>
 
+#if !defined(_MSC_VER)
+#   include <date/date.h>
+#endif
+
 namespace scwx
 {
 namespace awips
@@ -98,6 +102,10 @@ bool CodedTimeMotionLocation::Parse(const StringRange& lines,
       {
          using namespace std::chrono;
 
+#if !defined(_MSC_VER)
+         using namespace date;
+#endif
+
          static const std::string timeFormat {"%H%MZ"};
 
          std::istringstream in {time};
@@ -106,12 +114,12 @@ bool CodedTimeMotionLocation::Parse(const StringRange& lines,
 
          if (time.size() == 5 && !in.fail())
          {
-            p->time_ = hh_mm_ss {tp};
+            p->time_ = std::chrono::hh_mm_ss {tp};
          }
          else
          {
             logger_->warn("Invalid time: \"{}\"", time);
-            p->time_  = hh_mm_ss<minutes> {};
+            p->time_  = std::chrono::hh_mm_ss<minutes> {};
             dataValid = false;
          }
       }

wxdata/source/scwx/awips/pvtec.cpp

@@ -12,6 +12,10 @@
 #include <boost/bimap.hpp>
 #include <boost/bimap/unordered_set_of.hpp>
 
+#if !defined(_MSC_VER)
+#   include <date/date.h>
+#endif
+
 namespace scwx
 {
 namespace awips
@@ -87,7 +91,7 @@ public:
 PVtec::PVtec() : p(std::make_unique<PVtecImpl>()) {}
 PVtec::~PVtec() = default;
 
-PVtec::PVtec(PVtec&&) noexcept = default;
+PVtec::PVtec(PVtec&&) noexcept            = default;
 PVtec& PVtec::operator=(PVtec&&) noexcept = default;
 
 PVtec::ProductType PVtec::fixed_identifier() const
@@ -134,6 +138,10 @@ bool PVtec::Parse(const std::string& s)
 {
    using namespace std::chrono;
 
+#if !defined(_MSC_VER)
+   using namespace date;
+#endif
+
    // P-VTEC takes the form:
    // /k.aaa.cccc.pp.s.####.yymmddThhnnZ-yymmddThhnnZ/
    // 012345678901234567890123456789012345678901234567
@@ -187,8 +195,8 @@ bool PVtec::Parse(const std::string& s)
       std::istringstream ssEventBegin {sEventBegin};
       std::istringstream ssEventEnd {sEventEnd};
 
-      sys_time<minutes> eventBegin;
-      sys_time<minutes> eventEnd;
+      std::chrono::sys_time<minutes> eventBegin;
+      std::chrono::sys_time<minutes> eventEnd;
 
       ssEventBegin >> parse(dateTimeFormat, eventBegin);
       ssEventEnd >> parse(dateTimeFormat, eventEnd);

wxdata/source/scwx/network/dir_list.cpp

@@ -11,6 +11,10 @@
 #include <cpr/cpr.h>
 #include <libxml/HTMLparser.h>
 
+#if !defined(_MSC_VER)
+#   include <date/date.h>
+#endif
+
 #if defined(_MSC_VER)
 #   pragma warning(pop)
 #endif
@@ -177,13 +181,16 @@ void DirListSAXHandler::Characters(void* userData, const xmlChar* ch, int len)
    {
       using namespace std::chrono;
 
+#if !defined(_MSC_VER)
+      using namespace date;
+#endif
+
       // Date time format: yyyy-mm-dd hh:mm
       static const std::string kDateTimeFormat {"%Y-%m-%d %H:%M"};
-      static constexpr size_t  kDateTimeSize {16u};
 
       // Attempt to parse the date time
-      std::istringstream ssCharacters {characters};
-      sys_time<minutes>  mtime;
+      std::istringstream             ssCharacters {characters};
+      std::chrono::sys_time<minutes> mtime;
       ssCharacters >> parse(kDateTimeFormat, mtime);
 
       if (!ssCharacters.fail())

wxdata/source/scwx/provider/aws_level2_data_provider.cpp

@@ -5,6 +5,10 @@
 #include <fmt/chrono.h>
 #include <fmt/format.h>
 
+#if !defined(_MSC_VER)
+#   include <date/date.h>
+#endif
+
 namespace scwx
 {
 namespace provider
@@ -73,6 +77,10 @@ AwsLevel2DataProvider::GetTimePointFromKey(const std::string& key)
    {
       using namespace std::chrono;
 
+#if !defined(_MSC_VER)
+      using namespace date;
+#endif
+
       static const std::string timeFormat {"%Y%m%d_%H%M%S"};
 
       std::string        timeStr {key.substr(offset, formatSize)};

wxdata/source/scwx/provider/aws_level3_data_provider.cpp

@@ -9,6 +9,10 @@
 #include <fmt/chrono.h>
 #include <fmt/format.h>
 
+#if !defined(_MSC_VER)
+#   include <date/date.h>
+#endif
+
 namespace scwx
 {
 namespace provider
@@ -99,6 +103,10 @@ AwsLevel3DataProvider::GetTimePointFromKey(const std::string& key)
    {
       using namespace std::chrono;
 
+#if !defined(_MSC_VER)
+      using namespace date;
+#endif
+
       static const std::string timeFormat {"%Y_%m_%d_%H_%M_%S"};
 
       std::string        timeStr {key.substr(offset, formatSize)};

wxdata/source/scwx/provider/warnings_provider.cpp

@@ -14,6 +14,10 @@
 #include <cpr/cpr.h>
 #include <libxml/HTMLparser.h>
 
+#if !defined(_MSC_VER)
+#   include <date/date.h>
+#endif
+
 #if defined(_MSC_VER)
 #   pragma warning(pop)
 #endif
@@ -69,6 +73,10 @@ WarningsProvider::ListFiles(std::chrono::system_clock::time_point newerThan)
 {
    using namespace std::chrono;
 
+#if !defined(_MSC_VER)
+   using namespace date;
+#endif
+
    static const std::regex reWarningsFilename {
       "warnings_[0-9]{8}_[0-9]{2}.txt"};
    static const std::string dateTimeFormat {"warnings_%Y%m%d_%H.txt"};
@@ -104,8 +112,8 @@ WarningsProvider::ListFiles(std::chrono::system_clock::time_point newerThan)
    for (auto& record : warningRecords)
    {
       // Determine start time
-      sys_time<hours>    startTime;
-      std::istringstream ssFilename {record.filename_};
+      std::chrono::sys_time<hours> startTime;
+      std::istringstream           ssFilename {record.filename_};
 
       ssFilename >> parse(dateTimeFormat, startTime);
 

wxdata/source/scwx/util/time.cpp

@@ -22,10 +22,15 @@ std::chrono::system_clock::time_point TimePoint(uint32_t modifiedJulianDate,
 }
 
 std::string TimeString(std::chrono::system_clock::time_point time,
-                       const std::chrono::time_zone*         timeZone,
+                       const time_zone*                      timeZone,
                        bool                                  epochValid)
 {
    using namespace std::chrono;
+
+#if !defined(_MSC_VER)
+   using namespace date;
+#endif
+
    auto               timeInSeconds = time_point_cast<seconds>(time);
    std::ostringstream os;