1 files changed, 63 insertions, 0 deletions
diff --git a/desktop/source/deployment/misc/dp_version.cxx b/desktop/source/deployment/misc/dp_version.cxx
new file mode 100644
index 000000000..703045dde
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_version.cxx
@@ -0,0 +1,63 @@
+/* -*- 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 <rtl/ustring.hxx>
+
+#include <dp_version.hxx>
+
+namespace {
+
+OUString getElement(OUString const & version, ::sal_Int32 * index)
+{
+    while (*index < version.getLength() && version[*index] == '0') {
+        ++*index;
+    }
+    return version.getToken(0, '.', *index);
+}
+
+}
+
+namespace dp_misc {
+
+::dp_misc::Order compareVersions(
+    OUString const & version1, OUString const & version2)
+{
+    for (::sal_Int32 i1 = 0, i2 = 0; i1 >= 0 || i2 >= 0;) {
+        OUString e1(i1 >= 0 ? getElement(version1, &i1) : OUString());
+        OUString e2(i2 >= 0 ? getElement(version2, &i2) : OUString());
+        if (e1.getLength() < e2.getLength()) {
+            return ::dp_misc::LESS;
+        } else if (e1.getLength() > e2.getLength()) {
+            return ::dp_misc::GREATER;
+        } else if (e1 < e2) {
+            return ::dp_misc::LESS;
+        } else if (e1 > e2) {
+            return ::dp_misc::GREATER;
+        }
+    }
+    return ::dp_misc::EQUAL;
+}
+
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */