Adds lib-string-utils

libraries/lib-string-utils/DateTimeConversions.cpp

@@ -0,0 +1,44 @@
+/*!********************************************************************
+
+ Audacity: A Digital Audio Editor
+
+ @file DateTimeConversions.cpp
+ @brief Define functions to work with date and time string representations.
+
+ Dmitry Vedenko
+ **********************************************************************/
+
+#include "DateTimeConversions.h"
+
+#include <wx/datetime.h>
+
+#include "CodeConversions.h"
+
+namespace audacity
+{
+
+bool ParseRFC822Date (const std::string& dateString, SystemTime* time)
+{
+    wxDateTime dt;
+    wxString::const_iterator end;
+
+    if (!dt.ParseRfc822Date (dateString, &end))
+        return false;
+
+    if (time != nullptr)
+        *time = std::chrono::system_clock::from_time_t (dt.GetTicks ());
+
+    return true;
+}
+
+std::string SerializeRFC822Date (SystemTime timePoint)
+{
+    const wxDateTime dt (
+            time_t (std::chrono::duration_cast<std::chrono::seconds> (
+                    timePoint.time_since_epoch ()
+            ).count ()));
+
+    return ToUTF8 (dt.Format("%a, %d %b %Y %H:%M:%S %z"));
+}
+
+}