wrapper for concatenate function in amrex

src/Base/CMakeLists.txt

@@ -22,5 +22,6 @@ foreach(D IN LISTS AMReX_SPACEDIM)
         Periodicity.cpp
         PODVector.cpp
         Vector.cpp
+        Utility.cpp
     )
 endforeach()

src/Base/Utility.cpp

@@ -0,0 +1,21 @@
+/* Copyright 2021-2022 The AMReX Community
+ *
+ * License: BSD-3-Clause-LBNL
+ */
+#include <AMReX_Utility.H>
+#include <pybind11/pybind11.h>
+#include <sstream>
+
+namespace py = pybind11;
+using namespace amrex;
+
+void init_Utility(py::module& m)
+{
+    m.def("concatenate",
+          [] (const std::string& root,
+                     int                num,
+                     int                mindigits) {
+          return amrex::Concatenate(root, num, mindigits);
+          }, py::return_value_policy::move,
+          "Builds plotfile name");
+}

src/pyAMReX.cpp

@@ -43,7 +43,7 @@ void init_ParticleContainer(py::module &);
 void init_Periodicity(py::module &);
 void init_PODVector(py::module &);
 void init_Vector(py::module &);
-
+void init_Utility(py::module &);
 
 #if AMREX_SPACEDIM == 1
 PYBIND11_MODULE(amrex_1d_pybind, m) {
@@ -83,6 +83,7 @@ PYBIND11_MODULE(amrex_3d_pybind, m) {
                PODVector
                StructOfArrays
                Vector
+               Utility
     )pbdoc";
 
     // note: order from parent to child classes
@@ -114,6 +115,9 @@ PYBIND11_MODULE(amrex_3d_pybind, m) {
     init_ParticleContainer(m);
     init_AmrMesh(m);
 
+    // Wrappers around functions, independent of parent to child order
+    init_Utility(m);
+
     // API runtime version
     //   note PEP-440 syntax: x.y.zaN but x.y.z.devN
 #ifdef PYAMReX_VERSION_INFO