reconstructPar: Added -rm option

With the new -rm option the processor time directories are removed after the
reconstruction of each one.  For multi-region cases with the -region and -rm
options only the processor time directory for the reconstructed region is
removed whereas with the -allRegions option the entire processor time directory
is removed after reconstruction of all the regions.

applications/utilities/parallelProcessing/reconstructPar/reconstructPar.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2023 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2024 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -105,7 +105,6 @@ void writeDecomposition(const domainDecomposition& meshes)
         << endl;
 }
 
-
 }
 
 
@@ -189,6 +188,11 @@ int main(int argc, char *argv[])
         "newTimes",
         "only reconstruct new times (i.e. that do not exist already)"
     );
+    argList::addBoolOption
+    (
+        "rm",
+        "remove processor time directories after reconstruction"
+    );
 
     // Include explicit constant options, and explicit zero option (to prevent
     // the user accidentally trashing the initial fields)
@@ -573,14 +577,16 @@ int main(int argc, char *argv[])
             Info<< endl;
         }
 
-        if (regionNames == wordList(1, polyMesh::defaultRegion)) continue;
-
+        if (regionNames != wordList(1, polyMesh::defaultRegion))
+        {
             // Collect the region uniform directories
             forAll(regionNames, regioni)
             {
                 const word& regionName = regionNames[regioni];
                 const word regionDir =
-                regionName == polyMesh::defaultRegion ? word::null : regionName;
+                    regionName == polyMesh::defaultRegion
+                  ? word::null
+                  : regionName;
 
                 if (haveUniform(runTimes, regionDir))
                 {
@@ -599,6 +605,41 @@ int main(int argc, char *argv[])
             }
         }
 
+        if (args.optionFound("rm") && times[timei].name() != Time::constantName)
+        {
+            const bool allRegions = args.optionFound("allRegions");
+
+            forAll(regionNames, regioni)
+            {
+                const word& regionName = regionNames[regioni];
+                const word regionDir =
+                    allRegions || regionName == polyMesh::defaultRegion
+                  ? word::null
+                  : regionName;
+
+                const RegionRef<domainDecomposition> meshes =
+                    regionMeshes[regioni];
+
+                Info<< "Removing processors time directory" << endl;
+
+                for (label proci=0; proci<nProcs; proci++)
+                {
+                    const fileName procTimePath = fileHandler().filePath
+                    (
+                        runTimes.procTimes()[proci].timePath()/regionDir
+                    );
+
+                    if (isDir(procTimePath))
+                    {
+                        rmDir(procTimePath);
+                    }
+                }
+            }
+
+            Info<< endl;
+        }
+    }
+
     Info<< "End" << nl << endl;
 
     return 0;