Updates of C++ class ESmry to be used with python bindings

-> adding member function ESmry::get_startdat(), start of simulation from keyword STARTDAT in SMSPEC file
  -> adding member function ESmry::numberOfTimeSteps(), number of timesteps in run

opm/io/eclipse/ESmry.hpp

@@ -41,10 +41,14 @@ public:
 
     std::vector<float> get_at_rstep(const std::string& name) const;
 
+    const std::vector<int>& get_startdat() const { return startdat; }
+
     const std::vector<std::string>& keywordList() const { return keyword; }
 
     int timestepIdxAtReportstepStart(const int reportStep) const;
 
+    int numberOfTimeSteps() const { return param[0].size(); }
+
     const std::string& get_unit(const std::string& name) const;
 
 private:
@@ -58,6 +62,9 @@ private:
     std::vector<int> seqIndex;
     std::vector<float> seqTime;
 
+    // start of simulation year, month, day, hr, min, microsec*1000000
+    std::vector<int> startdat;
+
     std::vector<std::string> checkForMultipleResultFiles(const Opm::filesystem::path& rootN, bool formatted) const;
 
     void getRstString(const std::vector<std::string>& restartArray,

src/opm/io/eclipse/ESmry.cpp

@@ -100,9 +100,10 @@ ESmry::ESmry(const std::string &filename, bool loadBaseRunData)
         const std::vector<std::string> keywords = smspec.get<std::string>("KEYWORDS");
         const std::vector<std::string> wgnames = smspec.get<std::string>("WGNAMES");
         const std::vector<int> nums = smspec.get<int>("NUMS");
-
         const std::vector<std::string> units = smspec.get<std::string>("UNITS");
 
+        startdat = smspec.get<int>("STARTDAT");
+
         for (unsigned int i=0; i<keywords.size(); i++) {
             const std::string keyString = makeKeyString(keywords[i], wgnames[i], nums[i]);
             if (keyString.length() > 0) {
@@ -142,9 +143,10 @@ ESmry::ESmry(const std::string &filename, bool loadBaseRunData)
         const std::vector<std::string> keywords = smspec_rst.get<std::string>("KEYWORDS");
         const std::vector<std::string> wgnames = smspec_rst.get<std::string>("WGNAMES");
         const std::vector<int> nums = smspec_rst.get<int>("NUMS");
-
         const std::vector<std::string> units = smspec_rst.get<std::string>("UNITS");
 
+        startdat = smspec_rst.get<int>("STARTDAT");
+
         for (size_t i = 0; i < keywords.size(); i++) {
             const std::string keyString = makeKeyString(keywords[i], wgnames[i], nums[i]);
             if (keyString.length() > 0) {