1 files changed, 89 insertions, 0 deletions
diff --git a/sal/osl/w32/path_helper.cxx b/sal/osl/w32/path_helper.cxx
new file mode 100644
index 000000000..a2dd134fd
--- /dev/null
+++ b/sal/osl/w32/path_helper.cxx
@@ -0,0 +1,89 @@
+/* -*- 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 "path_helper.hxx"
+#include <osl/diagnose.h>
+#include <rtl/ustring.hxx>
+#include <sal/log.hxx>
+
+#include <algorithm>
+#include <wchar.h>
+
+constexpr OUStringLiteral BACKSLASH (u"\\");
+constexpr OUStringLiteral SLASH     (u"/");
+
+void osl_systemPathEnsureSeparator(/*inout*/ rtl_uString** ppustrPath)
+{
+    OSL_PRECOND(ppustrPath && (nullptr != *ppustrPath),
+                "osl_systemPathEnsureSeparator: Invalid parameter");
+
+    OUString path(*ppustrPath);
+    sal_Int32     i = std::max<sal_Int32>(path.lastIndexOf(BACKSLASH), path.lastIndexOf(SLASH));
+
+    if (i < (path.getLength()-1))
+    {
+        path += BACKSLASH;
+        rtl_uString_assign(ppustrPath, path.pData);
+    }
+
+    SAL_WARN_IF( !path.endsWith(BACKSLASH),
+                 "sal.osl",
+                 "osl_systemPathEnsureSeparator: Post condition failed");
+}
+
+void osl_systemPathRemoveSeparator(/*inout*/ rtl_uString** ppustrPath)
+{
+    OUString path(*ppustrPath);
+
+    if (!osl::systemPathIsLogicalDrivePattern(path))
+    {
+        sal_Int32 i = std::max<sal_Int32>(path.lastIndexOf(BACKSLASH), path.lastIndexOf(SLASH));
+
+        if (i > -1 && (i == (path.getLength() - 1)))
+        {
+            path = OUString(path.getStr(), path.getLength() - 1);
+            rtl_uString_assign(ppustrPath, path.pData);
+        }
+    }
+}
+
+// is [A-Za-z]:[/|\]\0
+const char* const LDP                = ":";
+const char* const LDP_WITH_BACKSLASH = ":\\";
+const char* const LDP_WITH_SLASH     = ":/";
+
+// degenerated case returned by the Windows FileOpen dialog
+// when someone enters for instance "x:filename", the Win32
+// API accepts this case
+const char* const LDP_WITH_DOT_BACKSLASH = ":.\\";
+
+bool osl_systemPathIsLogicalDrivePattern(/*in*/ const rtl_uString* pustrPath)
+{
+    const sal_Unicode* p = rtl_uString_getStr(const_cast<rtl_uString*>(pustrPath));
+    if (iswalpha(*p++))
+    {
+        return ((0 == rtl_ustr_ascii_compare(p, LDP)) ||
+                (0 == rtl_ustr_ascii_compare(p, LDP_WITH_BACKSLASH)) ||
+                (0 == rtl_ustr_ascii_compare(p, LDP_WITH_SLASH)) ||
+                (0 == rtl_ustr_ascii_compare(p, LDP_WITH_DOT_BACKSLASH)));
+    }
+    return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */