1 files changed, 117 insertions, 0 deletions
diff --git a/sd/source/core/sdiocmpt.cxx b/sd/source/core/sdiocmpt.cxx
new file mode 100644
index 0000000000..67de6a64d7
--- /dev/null
+++ b/sd/source/core/sdiocmpt.cxx
@@ -0,0 +1,117 @@
+/* -*- 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 <tools/debug.hxx>
+
+#include <sdiocmpt.hxx>
+
+old_SdrDownCompat::old_SdrDownCompat(SvStream& rNewStream, StreamMode nNewMode)
+:   rStream(rNewStream),
+    nSubRecSiz(0),
+    nSubRecPos(0),
+    nMode(nNewMode),
+    bOpen(false)
+{
+    OpenSubRecord();
+}
+
+old_SdrDownCompat::~old_SdrDownCompat()
+{
+    if(bOpen)
+        CloseSubRecord();
+}
+
+void old_SdrDownCompat::Write()
+{
+    rStream.WriteUInt32( nSubRecSiz );
+}
+
+void old_SdrDownCompat::OpenSubRecord()
+{
+    if(rStream.GetError())
+        return;
+
+    nSubRecPos = rStream.Tell();
+
+    if(nMode == StreamMode::READ)
+    {
+        rStream.ReadUInt32( nSubRecSiz );
+    }
+    else if(nMode == StreamMode::WRITE)
+    {
+        Write();
+    }
+
+    bOpen = true;
+}
+
+void old_SdrDownCompat::CloseSubRecord()
+{
+    if(rStream.GetError())
+        return;
+
+    sal_uInt32 nCurrentPos(rStream.Tell());
+
+    if(nMode == StreamMode::READ)
+    {
+        sal_uInt32 nReadCnt(nCurrentPos - nSubRecPos);
+        if(nReadCnt != nSubRecSiz)
+        {
+            rStream.Seek(nSubRecPos + nSubRecSiz);
+        }
+    }
+    else if(nMode == StreamMode::WRITE)
+    {
+        nSubRecSiz = nCurrentPos - nSubRecPos;
+        rStream.Seek(nSubRecPos);
+        Write();
+        rStream.Seek(nCurrentPos);
+    }
+
+    bOpen = false;
+}
+
+/*************************************************************************
+|*
+|* Constructor, writes and reads version number
+|*
+\************************************************************************/
+
+SdIOCompat::SdIOCompat(SvStream& rNewStream, StreamMode nNewMode, sal_uInt16 nVersion)
+:   old_SdrDownCompat(rNewStream, nNewMode)
+{
+    if (nNewMode == StreamMode::WRITE)
+    {
+        DBG_ASSERT(nVersion != SDIOCOMPAT_VERSIONDONTKNOW,
+                   "can't write unknown version");
+        rNewStream.WriteUInt16( nVersion );
+    }
+    else if (nNewMode == StreamMode::READ)
+    {
+        DBG_ASSERT(nVersion == SDIOCOMPAT_VERSIONDONTKNOW,
+                   "referring to the version while reading is silly!");
+        rNewStream.ReadUInt16( nVersion );
+    }
+}
+
+SdIOCompat::~SdIOCompat()
+{
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */