XrdApps::JCache: add new 'Hierarchy.hh' file

src/XrdApps/XrdClJCachePlugin/file/Hierarchy.hh

@@ -0,0 +1,59 @@
+//------------------------------------------------------------------------------
+// Copyright (c) 2024 by European Organization for Nuclear Research (CERN)
+// Author: Andreas-Joachim Peters <[email protected]>
+//------------------------------------------------------------------------------
+// This file is part of the XRootD software suite.
+//
+// XRootD is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// XRootD 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 Lesser General Public License
+// along with XRootD.  If not, see <http://www.gnu.org/licenses/>.
+//
+// In applying this licence, CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+
+#pragma once
+
+#include <filesystem>
+#include <string>
+#include <sys/stat.h>
+
+namespace JCache {
+
+bool makeHierarchy(const std::string &path) {
+  std::filesystem::path dirPath(path);
+
+  try {
+    // Create the directories with 755 permissions
+    if (!std::filesystem::exists(dirPath)) {
+      std::filesystem::create_directories(dirPath.parent_path());
+
+      for (auto &p : std::filesystem::recursive_directory_iterator(
+               dirPath.parent_path())) {
+        if (std::filesystem::is_directory(p)) {
+          chmod(p.path().c_str(), 0755);
+        }
+      }
+    }
+    return true;
+  } catch (const std::filesystem::filesystem_error &e) {
+    // Handle error
+    std::cerr << "Filesystem error: " << e.what() << std::endl;
+    return false;
+  } catch (const std::exception &e) {
+    // Handle other errors
+    std::cerr << "Error: " << e.what() << std::endl;
+    return false;
+  }
+}
+
+} // namespace JCache