1 files changed, 93 insertions, 0 deletions
diff --git a/filter/source/xsltfilter/OleHandler.hxx b/filter/source/xsltfilter/OleHandler.hxx
new file mode 100644
index 000000000..d59429aac
--- /dev/null
+++ b/filter/source/xsltfilter/OleHandler.hxx
@@ -0,0 +1,93 @@
+/* -*- 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/.
+ */
+
+#pragma once
+#include <cstdio>
+#include <cstring>
+#include <map>
+#include <string_view>
+#include <utility>
+#include <vector>
+#include <iostream>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <libxml/xmlIO.h>
+#include <libxslt/transform.h>
+#include <libxslt/xsltutils.h>
+#include <libxslt/variables.h>
+
+#include <cppuhelper/factory.hxx>
+#include <osl/module.h>
+#include <osl/file.hxx>
+#include <osl/process.h>
+#include <com/sun/star/lang/XComponent.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/beans/NamedValue.hpp>
+#include <com/sun/star/container/XNameContainer.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/io/XOutputStream.hpp>
+#include <com/sun/star/io/XStream.hpp>
+
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::container;
+using namespace ::com::sun::star::io;
+
+namespace XSLT
+{
+    /*
+     * OleHandler provides implementations for the XSLT extension functions used by the WordML 2003 XSLT filters.
+     *
+     * The extension functions takes base64 encoded string representations of embedded OLE objects provided by the XML filter framework,
+     * stores them into a com.sun.star.embed.OLESimpleStorage and retrieves them later as individual base64 OLE objects.
+     *
+     * The implementation is ported from the former Java based implementation XSLTOleExtrater (sic)
+     *
+     * I believe the whole thing should provide round-trip editing of embedded OLE objects.
+     * I'm not sure if it currently does anything meaningful, because the Java implementation seems to be broken both in OOo and LibO.
+     *
+     */
+    class OleHandler
+    {
+    public:
+        OleHandler(css::uno::Reference<XComponentContext> xContext)
+            : m_xContext(std::move(xContext))
+            , m_tcontext(nullptr)
+        {
+        }
+        ~OleHandler()
+        {
+            if (m_tcontext)
+                m_tcontext->_private = nullptr;
+        }
+        void    insertByName(const OUString& streamName, std::string_view content);
+        OString getByName(const OUString& streamName);
+        void registercontext(xsltTransformContextPtr context)
+        {
+            assert(context);
+            m_tcontext = context;
+            m_tcontext->_private = this;
+        }
+
+    private:
+        css::uno::Reference<XComponentContext> m_xContext;
+        css::uno::Reference<XNameContainer> m_storage;
+        css::uno::Reference<XStream> m_rootStream;
+        xsltTransformContextPtr m_tcontext;
+
+        void    ensureCreateRootStorage();
+        OString encodeSubStorage(const OUString& streamName);
+        void    insertSubStorage(const OUString& streamName, std::string_view content);
+        void    initRootStorageFromBase64(std::string_view content);
+        css::uno::Reference<XStream> createTempFile();
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */