Backport time_point to python convertor. Fix bindings returning invalid date from time_point convertor

bindings/python/src/datetime.cpp

@@ -5,6 +5,7 @@
 #include "boost_python.hpp"
 #include <boost/date_time/posix_time/posix_time_types.hpp>
 #include "optional.hpp"
+#include <boost/chrono.hpp>
 #include <boost/version.hpp>
 #include "libtorrent/time.hpp"
 
@@ -55,6 +56,33 @@ struct time_duration_to_python
     }
 };
 
+struct time_point_to_python
+{
+    static PyObject* convert(lt::time_point tpt)
+    {
+        object result;
+        if (tpt > lt::min_time()) {
+            time_t const tm = boost::chrono::system_clock::to_time_t(boost::chrono::system_clock::now()
+                + boost::chrono::duration_cast<boost::chrono::system_clock::duration>(tpt - lt::clock_type::now()));
+
+            std::tm* date = std::localtime(&tm);
+            result = datetime_datetime(
+                (int)1900 + date->tm_year
+                // tm use 0-11 and we need 1-12
+                , (int)date->tm_mon + 1
+                , (int)date->tm_mday
+                , date->tm_hour
+                , date->tm_min
+                , date->tm_sec
+            );
+        }
+        else {
+            result = object();
+        }
+        return incref(result.ptr());
+    }
+};
+
 struct ptime_to_python
 {
     static PyObject* convert(boost::posix_time::ptime const& pt)
@@ -87,6 +115,11 @@ void bind_datetime()
       , time_duration_to_python
     >();
 
+    to_python_converter<
+        lt::time_point
+      , time_point_to_python
+    >();
+
     to_python_converter<
         boost::posix_time::ptime
       , ptime_to_python