wrapper for concatenate function in amrex

src/Base/CMakeLists.txt

@@ -21,6 +21,7 @@ foreach(D IN LISTS AMReX_SPACEDIM)
         ParmParse.cpp
         Periodicity.cpp
         PODVector.cpp
+        Utility.cpp
         Vector.cpp
     )
 endforeach()

src/Base/Utility.cpp

@@ -0,0 +1,19 @@
+/* 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",
+          &amrex::Concatenate,
+          "Builds plotfile name",
+          py::arg("root"), py::arg("num"), py::arg("mindigits")=5
+    );
+}

src/pyAMReX.cpp

@@ -42,6 +42,7 @@ void init_ParticleTile(py::module &);
 void init_ParticleContainer(py::module &);
 void init_Periodicity(py::module &);
 void init_PODVector(py::module &);
+void init_Utility(py::module &);
 void init_Vector(py::module &);
 
 
@@ -82,6 +83,7 @@ PYBIND11_MODULE(amrex_3d_pybind, m) {
                Periodicity
                PODVector
                StructOfArrays
+               Utility
                Vector
     )pbdoc";
 
@@ -114,6 +116,9 @@ PYBIND11_MODULE(amrex_3d_pybind, m) {
     init_ParticleContainer(m);
     init_AmrMesh(m);
 
+    // Wrappers around standalone functions
+    init_Utility(m);
+
     // API runtime version
     //   note PEP-440 syntax: x.y.zaN but x.y.z.devN
 #ifdef PYAMReX_VERSION_INFO

tests/test_utility.py

@@ -0,0 +1,11 @@
+# -*- coding: utf-8 -*-
+
+
+import amrex.space3d as amr
+
+
+def test_concatenate():
+    pltname = amr.concatenate("plt", 1000, 5)
+    print("--test concatenate --")
+    print("plotfile name", pltname)
+    assert pltname == "plt01000"