make gnumeric xml a real LibreOffice filter format

Change-Id: I502f4610718b5c1914a54346c46d4f998c4d370f

filter/Configuration_filter.mk

@@ -486,6 +486,7 @@ $(eval $(call filter_Configuration_add_types,fcfg_langpack,fcfg_calc_types.xcu,f
 	calc_HTML \
 	generic_HTML \
 	generic_Text \
+	calc_Gnumeric \
 	calc_Lotus \
 	calc_QPro \
 	calc_MS_Excel_40 \
@@ -545,6 +546,7 @@ $(eval $(call filter_Configuration_add_filters,fcfg_langpack,fcfg_calc_filters.x
 	dBase \
 	calc8 \
 	calc8_template \
+	calc_Gnumeric \
 	calc_MS_Excel_2007_XML \
 	calc_MS_Excel_2007_VBA_XML \
 	calc_MS_Excel_2007_XML_Template \

filter/source/config/fragments/filters/calc_Gnumeric.xcu

@@ -0,0 +1,29 @@
+<!--
+ * 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 .
+-->
+<node oor:name="Gnumeric Spreadsheet" oor:op="replace">
+    <prop oor:name="Flags"><value>IMPORT ALIEN 3RDPARTYFILTER PREFERRED</value></prop>
+    <prop oor:name="UIComponent"/>
+    <prop oor:name="FilterService"/>
+    <prop oor:name="UserData"/>
+    <prop oor:name="Type"><value>Gnumeric XML</value></prop>
+    <prop oor:name="TemplateName"/>
+    <prop oor:name="DocumentService"><value>com.sun.star.sheet.SpreadsheetDocument</value></prop>
+    <prop oor:name="UIName">
+        <value xml:lang="en-US">Gnumeric Spreadsheet</value>
+    </prop>
+</node>

filter/source/config/fragments/types/calc_Gnumeric.xcu

@@ -0,0 +1,17 @@
+<!--
+ * 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/.
+-->
+<node oor:name="Gnumeric XML" oor:op="replace" >
+    <prop oor:name="DetectService"><value>com.sun.star.comp.sc.OrcusFilterDetect</value></prop>
+    <prop oor:name="URLPattern"/>
+    <prop oor:name="Extensions"><value>gnumeric gnm</value></prop>
+    <prop oor:name="MediaType"><value>application/x-gnumeric</value></prop>
+    <prop oor:name="Preferred"><value>false</value></prop>
+    <prop oor:name="PreferredFilter"><value>Gnumeric Spreadsheet</value></prop>
+    <prop oor:name="UIName"><value xml:lang="en-US">Gnumeric Spreadsheet</value></prop>
+    <prop oor:name="ClipboardFormat"/>
+</node>

framework/source/loadenv/loadenv.cxx

@@ -685,13 +685,6 @@ bool queryOrcusTypeAndFilter(const uno::Sequence<beans::PropertyValue>& rDescrip
     // exists) in order to find a usable loader. Exploit it as a temporary
     // hack.
 
-    if (aURL.endsWith(".gnumeric"))
-    {
-        rType = "generic_Text";
-        rFilter = "gnumeric";
-        return true;
-    }
-
     // depending on the experimental mode
     uno::Reference< uno::XComponentContext > xContext = comphelper::getProcessComponentContext();
     if (!xContext.is() || !officecfg::Office::Common::Misc::ExperimentalMode::get(xContext))

sc/Library_scfilt.mk

@@ -236,6 +236,7 @@ $(eval $(call gb_Library_add_exception_objects,scfilt,\
 	sc/source/filter/orcus/interface \
 	sc/source/filter/orcus/orcusfiltersimpl \
 	sc/source/filter/orcus/xmlcontext \
+	sc/source/filter/orcus/filterdetect \
 ))
 
 endif

sc/source/filter/orcus/filterdetect.cxx

@@ -0,0 +1,111 @@
+/* -*- 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 <com/sun/star/document/XExtendedFilterDetection.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <cppuhelper/implbase.hxx>
+
+#include <unotools/mediadescriptor.hxx>
+
+#include <rtl/strbuf.hxx>
+
+#include <orcus/format_detection.hpp>
+
+namespace {
+
+class OrcusFormatDetect : public ::cppu::WeakImplHelper<
+                          ::com::sun::star::document::XExtendedFilterDetection,
+                          ::com::sun::star::lang::XServiceInfo >
+{
+public:
+    explicit            OrcusFormatDetect();
+    virtual             ~OrcusFormatDetect();
+
+    virtual OUString SAL_CALL getImplementationName()
+        throw( ::com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
+
+    virtual sal_Bool SAL_CALL supportsService(const OUString& rServiceName)
+        throw( ::com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
+
+    virtual ::com::sun::star::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames()
+        throw( ::com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
+
+    virtual OUString SAL_CALL
+                        detect( ::com::sun::star::uno::Sequence< ::com::sun::star::beans::PropertyValue >& rMediaDescSeq )
+                            throw( ::com::sun::star::uno::RuntimeException, std::exception ) SAL_OVERRIDE;
+
+private:
+};
+
+OrcusFormatDetect::OrcusFormatDetect()
+{
+}
+
+OrcusFormatDetect::~OrcusFormatDetect()
+{
+}
+
+OUString OrcusFormatDetect::getImplementationName()
+        throw( ::com::sun::star::uno::RuntimeException, std::exception )
+{
+    return OUString("");
+}
+
+sal_Bool OrcusFormatDetect::supportsService(const OUString& /*rServiceName*/)
+        throw( ::com::sun::star::uno::RuntimeException, std::exception )
+{
+    return false;
+}
+
+css::uno::Sequence<OUString> OrcusFormatDetect::getSupportedServiceNames()
+        throw( ::com::sun::star::uno::RuntimeException, std::exception )
+{
+    return css::uno::Sequence<OUString>();
+}
+
+OUString OrcusFormatDetect::detect(css::uno::Sequence<css::beans::PropertyValue>& rMediaDescSeq)
+        throw( ::com::sun::star::uno::RuntimeException, std::exception )
+{
+    utl::MediaDescriptor aMediaDescriptor( rMediaDescSeq );
+    bool bAborted = aMediaDescriptor.getUnpackedValueOrDefault(utl::MediaDescriptor::PROP_ABORTED(), false);
+    if (bAborted)
+        return OUString();
+
+    css::uno::Reference<css::io::XInputStream> xInputStream(aMediaDescriptor[utl::MediaDescriptor::PROP_INPUTSTREAM()], css::uno::UNO_QUERY );
+
+    static const sal_Int32 nBytes = 4096;
+    css::uno::Sequence<sal_Int8> aSeq(nBytes);
+    bool bEnd = false;
+    OStringBuffer aContent;
+    while(!bEnd)
+    {
+        sal_Int32 nReadBytes = xInputStream->readBytes(aSeq, nBytes);
+        bEnd = !(nReadBytes == nBytes);
+        aContent.append(reinterpret_cast<const char*>(aSeq.getConstArray()), nReadBytes);
+    }
+
+    orcus::format_t eFormat = orcus::detect(reinterpret_cast<const unsigned char*>(aContent.getStr()), aContent.getLength());
+    if (eFormat == orcus::format_gnumeric)
+        return OUString("Gnumeric XML");
+
+    return OUString();
+}
+
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT ::com::sun::star::uno::XInterface* SAL_CALL
+com_sun_star_comp_oox_sc_OrcusFormatDetect_get_implementation(::com::sun::star::uno::XComponentContext* ,
+                                                           ::com::sun::star::uno::Sequence<css::uno::Any> const &)
+{
+    return cppu::acquire(new OrcusFormatDetect());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sc/util/scfilt.component

@@ -28,4 +28,8 @@
       constructor="com_sun_star_comp_oox_xls_FormulaParser_get_implementation">
     <service name="com.sun.star.sheet.FilterFormulaParser"/>
   </implementation>
+  <implementation name="com.sun.star.comp.sc.OrcusFormatDetect"
+      constructor="com_sun_star_comp_sc_OrcusFormatDetect_get_implementation">
+    <service name="com.sun.star.frame.ExtendedTypeDetection"/>
+  </implementation>
 </component>