ENH: Added new ceeateZeroDirectory utility

Uses a system/caseProperties file to select templates from
etc/caseDicts/createZeroDirectoryTemplates to enable high-level setup
of a case.
See
- etc/caseDicts/createZeroDirectoryTemplates
- tutorials/preProcessing/createZeroDirectory

applications/utilities/preProcessing/createZeroDirectory/boundaryInfo.C

@@ -0,0 +1,198 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "boundaryInfo.H"
+#include "Time.H"
+#include "polyMesh.H"
+#include "processorPolyPatch.H"
+
+using namespace Foam;
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    defineTemplateTypeNameAndDebug(IOPtrList<entry>, 0);
+}
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+Foam::IOPtrList<Foam::entry> Foam::boundaryInfo::readBoundaryDict
+(
+    const Time& runTime,
+    const word& regionName
+) const
+{
+    Info<< "    Reading mesh boundaries" << endl;
+
+    const_cast<word&>(IOPtrList<entry>::typeName) = polyBoundaryMesh::typeName;
+    IOPtrList<entry> boundaryPatchList
+    (
+        IOobject
+        (
+            "boundary",
+            runTime.findInstance(regionName/polyMesh::meshSubDir, "boundary"),
+            regionName/polyMesh::meshSubDir,
+            runTime,
+            IOobject::MUST_READ,
+            IOobject::NO_WRITE,
+            false
+        )
+    );
+
+    // remove zero-sized patches
+    PtrList<entry> boundaryPatchListNew;
+    forAll(boundaryPatchList, patchI)
+    {
+        const dictionary& dict = boundaryPatchList[patchI].dict();
+        const word pType = dict.lookup("type");
+        bool procPatch = pType == processorPolyPatch::typeName;
+
+        bool addPatch = true;
+        if (!procPatch)
+        {
+            label nFaces = readLabel(dict.lookup("nFaces"));
+            reduce(nFaces, sumOp<label>());
+            if (nFaces == 0)
+            {
+                addPatch = false;
+            }
+        }
+
+        if (addPatch)
+        {
+            boundaryPatchListNew.append(boundaryPatchList[patchI].clone());
+        }
+    }
+
+    boundaryPatchList.transfer(boundaryPatchListNew);
+
+    return boundaryPatchList;
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::boundaryInfo::boundaryInfo(const Time& runTime, const word& regionName)
+:
+    boundaryDict_(readBoundaryDict(runTime, regionName)),
+    names_(),
+    types_(),
+    constraint_(),
+    groups_(),
+    allGroupNames_()
+{
+    names_.setSize(boundaryDict_.size());
+    types_.setSize(boundaryDict_.size());
+    constraint_.setSize(boundaryDict_.size(), false);
+    groups_.setSize(boundaryDict_.size());
+
+    forAll(boundaryDict_, patchI)
+    {
+        const dictionary& dict = boundaryDict_[patchI].dict();
+
+        names_[patchI] = dict.dictName();
+        dict.lookup("type") >> types_[patchI];
+        if (polyPatch::constraintType(types_[patchI]))
+        {
+            constraint_[patchI] = true;
+        }
+
+        if (dict.found("inGroups"))
+        {
+            dict.lookup("inGroups") >> groups_[patchI];
+            allGroupNames_.insert(groups_[patchI]);
+        }
+    }
+}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+const Foam::wordList& Foam::boundaryInfo::names() const
+{
+    return names_;
+}
+
+
+const Foam::wordList& Foam::boundaryInfo::types() const
+{
+    return types_;
+}
+
+
+const Foam::boolList& Foam::boundaryInfo::constraint() const
+{
+    return constraint_;
+}
+
+
+const Foam::List<Foam::wordList>& Foam::boundaryInfo::groups() const
+{
+    return groups_;
+}
+
+
+const Foam::wordHashSet& Foam::boundaryInfo::allGroupNames() const
+{
+    return allGroupNames_;
+}
+
+
+void Foam::boundaryInfo::setType(const label patchI, const word& condition)
+{
+    if (constraint_[patchI])
+    {
+        // not overriding constraint types
+        return;
+    }
+
+    if (wordRe(".*[mM]apped.*", wordRe::DETECT).match(types_[patchI]))
+    {
+        // ugly hack to avoid overriding mapped types
+        return;
+    }
+
+    if (condition == "wall")
+    {
+        types_[patchI] = condition;
+    }
+    else
+    {
+        types_[patchI] = "patch";
+    }
+
+    dictionary& patchDict = boundaryDict_[patchI].dict();
+    patchDict.add("type", types_[patchI], true);
+}
+
+
+void Foam::boundaryInfo::write() const
+{
+    boundaryDict_.write();
+}
+
+
+// ************************************************************************* //