Create ensureDirectoryExists() free function.

CMakeLists_files.cmake

@@ -63,6 +63,7 @@ list (APPEND MAIN_SOURCE_FILES
   opm/polymer/TransportSolverTwophasePolymer.cpp
   opm/polymer/fullyimplicit/FullyImplicitCompressiblePolymerSolver.cpp
   opm/polymer/fullyimplicit/PolymerPropsAd.cpp
+  opm/simulators/ensureDirectoryExists.cpp
   opm/simulators/SimulatorCompressibleTwophase.cpp
   opm/simulators/SimulatorIncompTwophase.cpp
   opm/simulators/WellSwitchingLogger.cpp
@@ -258,6 +259,7 @@ list (APPEND PUBLIC_HEADER_FILES
   opm/polymer/fullyimplicit/SimulatorFullyImplicitBlackoilPolymer.hpp
   opm/polymer/fullyimplicit/SimulatorFullyImplicitBlackoilPolymer_impl.hpp
   opm/polymer/fullyimplicit/WellStateFullyImplicitBlackoilPolymer.hpp
+  opm/simulators/ensureDirectoryExists.hpp
   opm/simulators/ParallelFileMerger.hpp
   opm/simulators/SimulatorCompressibleTwophase.hpp
   opm/simulators/SimulatorIncompTwophase.hpp

opm/simulators/ensureDirectoryExists.cpp

@@ -0,0 +1,45 @@
+/*
+  Copyright 2017 SINTEF Digital, Mathematics and Cybernetics.
+  Copyright 2017 Statoil ASA.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <opm/simulators/ensureDirectoryExists.hpp>
+#include <opm/common/ErrorMacros.hpp>
+
+namespace Opm
+{
+
+    /// The directory pointed to by 'dirpath' will be created if it
+    /// does not already exist. Will throw an exception if this cannot
+    /// be done.
+    void ensureDirectoryExists(const boost::filesystem::path& dirpath)
+    {
+        if (dirpath != ".") { // Do not try to create the current directory.
+            if (!is_directory(dirpath)) {
+                try {
+                    create_directories(dirpath);
+                }
+                catch (...) {
+                    OPM_THROW(std::runtime_error, "Creating directories failed: " << dirpath);
+                }
+            }
+        }
+    }
+
+
+} // namespace Opm

opm/simulators/ensureDirectoryExists.hpp

@@ -0,0 +1,40 @@
+/*
+  Copyright 2017 SINTEF Digital, Mathematics and Cybernetics.
+  Copyright 2017 Statoil ASA.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM 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.
+
+  OPM 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 OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef OPM_ENSUREDIRECTORYEXISTS_HEADER_INCLUDED
+#define OPM_ENSUREDIRECTORYEXISTS_HEADER_INCLUDED
+
+#include <boost/filesystem.hpp>
+
+namespace Opm
+{
+
+    /// The directory pointed to by 'dirpath' will be created if it
+    /// does not already exist. Will throw an exception if this cannot
+    /// be done.
+    ///
+    /// Note that std::string can be passed to this functions, as they
+    /// can be implicitly converted to boost::filesystem::path objects.
+    void ensureDirectoryExists(const boost::filesystem::path& dirpath);
+
+
+} // namespace Opm
+
+#endif // OPM_ENSUREDIRECTORYEXISTS_HEADER_INCLUDED