indexing: add indexing export as an export filter for Writer

Change-Id: I26157a8ffeee80b03866569d3d3cec2a34fe377d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/118144
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
(cherry picked from commit 95b06d3aa514ce83f82fd538d1731fc6363e4b8a)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/121107
Tested-by: Tomaž Vajngerl <quikee@gmail.com>

4 files changed, 136 insertions, 0 deletions

diff --git a/sw/Library_sw.mk b/sw/Library_sw.mk
index 616b34f44b41..1c5884008c23 100644
--- a/sw/Library_sw.mk
+++ b/sw/Library_sw.mk
@@ -570,6 +570,7 @@ $(eval $(call gb_Library_add_exception_objects,sw,\
     sw/source/filter/xml/xmltexte \
     sw/source/filter/xml/xmltexti \
     sw/source/filter/indexing/IndexingExport \
+    sw/source/filter/indexing/IndexingExportFilter \
     sw/source/uibase/app/appenv \
     sw/source/uibase/app/apphdl \
     sw/source/uibase/app/applab \
diff --git a/sw/source/filter/inc/IndexingExportFilter.hxx b/sw/source/filter/inc/IndexingExportFilter.hxx
new file mode 100644
index 000000000000..82c56dfa9a61
--- /dev/null
+++ b/sw/source/filter/inc/IndexingExportFilter.hxx
@@ -0,0 +1,68 @@
+/* -*- 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 <com/sun/star/document/XFilter.hpp>
+#include <com/sun/star/document/XExporter.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+namespace sw
+{
+class IndexingExportFilter final
+    : public cppu::WeakImplHelper<css::document::XFilter, css::document::XExporter,
+                                  css::lang::XInitialization, css::lang::XServiceInfo>
+{
+private:
+    css::uno::Reference<css::lang::XComponent> m_xSourceDocument;
+
+public:
+    IndexingExportFilter() {}
+
+    // XFilter
+    virtual sal_Bool SAL_CALL
+    filter(const css::uno::Sequence<css::beans::PropertyValue>& aDescriptor) override;
+
+    virtual void SAL_CALL cancel() override {}
+
+    // XExporter
+    virtual void SAL_CALL
+    setSourceDocument(const css::uno::Reference<css::lang::XComponent>& xDocument) override
+    {
+        m_xSourceDocument = xDocument;
+    }
+
+    // XInitialization
+    virtual void SAL_CALL
+    initialize(const css::uno::Sequence<css::uno::Any>& /*aArguments*/) override
+    {
+    }
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override
+    {
+        return "com.sun.star.comp.Writer.IndexingExportFilter";
+    }
+
+    virtual sal_Bool SAL_CALL supportsService(OUString const& rServiceName) override
+    {
+        return cppu::supportsService(this, rServiceName);
+    }
+
+    virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override
+    {
+        return { "com.sun.star.document.ExportFilter" };
+    }
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sw/source/filter/indexing/IndexingExportFilter.cxx b/sw/source/filter/indexing/IndexingExportFilter.cxx
new file mode 100644
index 000000000000..52488782aaf9
--- /dev/null
+++ b/sw/source/filter/indexing/IndexingExportFilter.cxx
@@ -0,0 +1,63 @@
+/* -*- 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/.
+ */
+
+#include <IndexingExportFilter.hxx>
+#include <IndexingExport.hxx>
+
+#include <unotxdoc.hxx>
+#include <docsh.hxx>
+
+#include <unotools/mediadescriptor.hxx>
+#include <unotools/ucbstreamhelper.hxx>
+#include <comphelper/servicehelper.hxx>
+
+#include <com/sun/star/io/XOutputStream.hpp>
+#include <svl/outstrm.hxx>
+
+using namespace css;
+
+namespace sw
+{
+sal_Bool IndexingExportFilter::filter(const uno::Sequence<beans::PropertyValue>& aDescriptor)
+{
+    bool bReturn = false;
+
+    utl::MediaDescriptor aMediaDesc = aDescriptor;
+
+    // Actually get the SwRootFrame to call dumpAsXml
+    auto pXTextDocument
+        = comphelper::getUnoTunnelImplementation<SwXTextDocument>(m_xSourceDocument);
+    if (pXTextDocument)
+    {
+        uno::Reference<io::XOutputStream> xOutputStream = aMediaDesc.getUnpackedValueOrDefault(
+            utl::MediaDescriptor::PROP_OUTPUTSTREAM(), uno::Reference<io::XOutputStream>());
+
+        std::unique_ptr<SvStream> pStream(new SvOutputStream(xOutputStream));
+        SwDocShell* pShell = pXTextDocument->GetDocShell();
+        SwDoc* pDoc = pShell->GetDoc();
+        if (pDoc)
+        {
+            IndexingExport aIndexingExport(*pStream, pDoc);
+            bReturn = aIndexingExport.runExport();
+        }
+    }
+
+    return bReturn;
+}
+
+} // end namespace sw
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+com_sun_star_comp_Writer_IndexingExportFilter_get_implementation(
+    css::uno::XComponentContext*, css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new sw::IndexingExportFilter());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sw/util/sw.component b/sw/util/sw.component
index f4ad4f7e3339..e05a865a6471 100644
--- a/sw/util/sw.component
+++ b/sw/util/sw.component
@@ -151,6 +151,10 @@
       constructor="com_sun_star_util_comp_FinalThreadManager_get_implementation">
     <service name="com.sun.star.util.JobManager"/>
   </implementation>
+  <implementation name="com.sun.star.comp.Writer.IndexingExportFilter"
+      constructor="com_sun_star_comp_Writer_IndexingExportFilter_get_implementation">
+    <service name="com.sun.star.comp.Writer.IndexingExportFilter"/>
+  </implementation>
   <implementation name="com.sun.star.comp.Writer.LayoutDump"
       constructor="com_sun_star_comp_Writer_LayoutDump_get_implementation">
     <service name="com.sun.star.comp.Writer.LayoutDump"/>