Better handling of non--UTF-8 filesystem pathnames in sal/osl/unx/

The idea is to internally in sal/osl/unx/ use OString instead of OUString to
represent pathnames, so that the OString carries the actual bytes that make up
the pathname.  At the boundary of translating between pathname OStrings and file
URL OUStrings, translate sequences of bytes that are valid according to
osl_getThreadTextEncoding() into UTF-8 and translate other bytes into individual
(percent-encoded) bytes in the file URL.

This change required duplicating some of the internal functionality in
sal/osl/unx/ for both OString and OUString, and to make part of sal/rtl/uri.cxx
accessible from sal/osl/unx/ via new sal/inc/uri_internal.hxx.

Change-Id: Id1ebaebe9e7f2d21f350f6b1a07849edee54331f
Reviewed-on: https://gerrit.libreoffice.org/78798
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/sal/inc/uri_internal.hxx b/sal/inc/uri_internal.hxx
new file mode 100644
index 000000000000..0ec0650cab63
--- /dev/null
+++ b/sal/inc/uri_internal.hxx
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * 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 .
+ */
+
+#ifndef INCLUDED_SAL_INC_URI_INTERNAL_HXX
+#define INCLUDED_SAL_INC_URI_INTERNAL_HXX
+
+#include <sal/config.h>
+
+namespace rtl::uri::detail
+{
+enum EscapeType
+{
+    EscapeNo,
+    EscapeChar,
+    EscapeOctet
+};
+
+sal_uInt32 readUcs4(sal_Unicode const** pBegin, sal_Unicode const* pEnd, bool bEncoded,
+                    rtl_TextEncoding eCharset, EscapeType* pType);
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */