1 files changed, 87 insertions, 0 deletions
diff --git a/configmgr/source/modifications.cxx b/configmgr/source/modifications.cxx
new file mode 100644
index 000000000000..add18ceaa1ea
--- /dev/null
+++ b/configmgr/source/modifications.cxx
@@ -0,0 +1,87 @@
+/*************************************************************************
+*
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* Copyright 2000, 2010 Oracle and/or its affiliates.
+*
+* OpenOffice.org - a multi-platform office productivity suite
+*
+* This file is part of OpenOffice.org.
+*
+* OpenOffice.org is free software: you can redistribute it and/or modify
+* it under the terms of the GNU Lesser General Public License version 3
+* only, as published by the Free Software Foundation.
+*
+* OpenOffice.org 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 Lesser General Public License version 3 for more details
+* (a copy is included in the LICENSE file that accompanied this code).
+*
+* You should have received a copy of the GNU Lesser General Public License
+* version 3 along with OpenOffice.org.  If not, see
+* <http://www.openoffice.org/license.html>
+* for a copy of the LGPLv3 License.
+*
+************************************************************************/
+
+#include "precompiled_configmgr.hxx"
+#include "sal/config.h"
+
+#include "rtl/ustring.hxx"
+
+#include "modifications.hxx"
+#include "path.hxx"
+
+namespace configmgr {
+
+Modifications::Modifications() {}
+
+Modifications::~Modifications() {}
+
+void Modifications::add(Path const & path) {
+    Node * p = &root_;
+    bool wasPresent = false;
+    for (Path::const_iterator i(path.begin()); i != path.end(); ++i) {
+        Node::Children::iterator j(p->children.find(*i));
+        if (j == p->children.end()) {
+            if (wasPresent && p->children.empty()) {
+                return;
+            }
+            j = p->children.insert(Node::Children::value_type(*i, Node())).
+                first;
+            wasPresent = false;
+        } else {
+            wasPresent = true;
+        }
+        p = &j->second;
+    }
+    p->children.clear();
+}
+
+void Modifications::remove(Path const & path) {
+    OSL_ASSERT(!path.empty());
+    Node * p = &root_;
+    for (Path::const_iterator 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()) {
+                Path parent(path);
+                parent.pop_back();
+                remove(parent);
+            }
+            break;
+        }
+        p = &j->second;
+    }
+}
+
+Modifications::Node const & Modifications::getRoot() const {
+    return root_;
+}
+
+}