1 files changed, 77 insertions, 0 deletions
diff --git a/configmgr/source/modifications.cxx b/configmgr/source/modifications.cxx
new file mode 100644
index 000000000..d84904c3f
--- /dev/null
+++ b/configmgr/source/modifications.cxx
@@ -0,0 +1,77 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <cassert>
+
+#include <rtl/ustring.hxx>
+
+#include "modifications.hxx"
+
+namespace configmgr {
+
+Modifications::Modifications() {}
+
+Modifications::~Modifications() {}
+
+void Modifications::add(std::vector<OUString> const & path) {
+    Node * p = &root_;
+    bool wasPresent = false;
+    for (auto const& pathItem : path) {
+        Node::Children::iterator j(p->children.find(pathItem));
+        if (j == p->children.end()) {
+            if (wasPresent && p->children.empty()) {
+                return;
+            }
+            j = p->children.emplace(pathItem, Node()).first;
+            wasPresent = false;
+        } else {
+            wasPresent = true;
+        }
+        p = &j->second;
+    }
+    p->children.clear();
+}
+
+void Modifications::remove(std::vector<OUString> const & path) {
+    assert(!path.empty());
+    Node * p = &root_;
+    for (auto i(path.begin());;) {
+        Node::Children::iterator j(p->children.find(*i));
+        if (j == p->children.end()) {
+            break;
+        }
+        if (++i == path.end()) {
+            p->children.erase(j);
+            if (p->children.empty()) {
+                std::vector<OUString> parent(path);
+                parent.pop_back();
+                remove(parent);
+            }
+            break;
+        }
+        p = &j->second;
+    }
+}
+
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */