1 files changed, 104 insertions, 0 deletions
diff --git a/sd/source/filter/ppt/pptatom.cxx b/sd/source/filter/ppt/pptatom.cxx
new file mode 100644
index 0000000000..24d87f0401
--- /dev/null
+++ b/sd/source/filter/ppt/pptatom.cxx
@@ -0,0 +1,104 @@
+/* -*- 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/stream.hxx>
+#include "pptatom.hxx"
+
+using namespace ppt;
+
+Atom::Atom( const DffRecordHeader& rRecordHeader, SvStream& rStream )
+: mrStream( rStream )
+, maRecordHeader( rRecordHeader )
+, mpFirstChild( nullptr )
+, mpNextAtom( nullptr )
+{
+    if( isContainer() )
+    {
+        if( seekToContent() )
+        {
+            DffRecordHeader aChildHeader;
+
+            Atom* pLastAtom = nullptr;
+
+            // retrieve file size (to allow sanity checks)
+            sal_uInt64 const nStreamSize = mrStream.TellEnd();
+
+            while( mrStream.good()
+                && ( mrStream.Tell() < nStreamSize )
+                && ( mrStream.Tell() < maRecordHeader.GetRecEndFilePos() ) )
+            {
+                if (ReadDffRecordHeader(mrStream, aChildHeader))
+                {
+                    Atom* pAtom = new Atom( aChildHeader, mrStream );
+
+                    if( pLastAtom )
+                        pLastAtom->mpNextAtom = pAtom;
+                    if( mpFirstChild == nullptr )
+                        mpFirstChild = pAtom;
+
+                    pLastAtom = pAtom;
+                }
+            }
+        }
+    }
+
+    if (!maRecordHeader.SeekToEndOfRecord(mrStream))
+        mrStream.SetError(SVSTREAM_FILEFORMAT_ERROR);
+}
+
+Atom::~Atom()
+{
+    Atom* pChild = mpFirstChild;
+    while( pChild )
+    {
+        Atom* pNextChild = pChild->mpNextAtom;
+        delete pChild;
+        pChild = pNextChild;
+    }
+}
+
+/** imports this atom and its child atoms */
+Atom* Atom::import( const DffRecordHeader& rRootRecordHeader, SvStream& rStCtrl )
+{
+    Atom* pRootAtom = new Atom( rRootRecordHeader, rStCtrl );
+
+    if( rStCtrl.GetError() == ERRCODE_NONE )
+    {
+        return pRootAtom;
+    }
+    else
+    {
+        delete pRootAtom;
+        return nullptr;
+    }
+}
+
+/** returns the next child atom after pLast with nRecType or NULL */
+const Atom* Atom::findNextChildAtom( sal_uInt16 nRecType, const Atom* pLast ) const
+{
+    Atom* pChild = pLast != nullptr ? pLast->mpNextAtom : mpFirstChild;
+    while( pChild && pChild->maRecordHeader.nRecType != nRecType )
+    {
+        pChild = pChild->mpNextAtom;
+    }
+
+    return pChild;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */