Add MyPath::printGroup() helper

Author: franzpoeschel

include/openPMD/backend/Attributable.hpp

@@ -281,6 +281,7 @@ class Attributable
 
         /** Reconstructs a path that can be passed to a Series constructor */
         std::string filePath() const;
+        std::string printGroup() const;
     };
 
     /**

src/backend/Attributable.cpp

@@ -28,6 +28,7 @@
 #include <complex>
 #include <iostream>
 #include <set>
+#include <sstream>
 
 namespace openPMD
 {
@@ -197,6 +198,21 @@ std::string Attributable::MyPath::filePath() const
     return directory + seriesName + seriesExtension;
 }
 
+std::string Attributable::MyPath::printGroup() const
+{
+    std::stringstream res;
+    if (this->group.empty())
+    {
+        return res.str();
+    }
+    res << *this->group.begin();
+    for (auto it = ++this->group.begin(); it != this->group.end(); ++it)
+    {
+        res << '/' << *it;
+    }
+    return res.str();
+}
+
 auto Attributable::myPath() const -> MyPath
 {
     MyPath res;