WASM --enable-wasm-strip now skips lots of LO code

... resulting in a stripped-down, Writer-only build to decrease
the resulting WASM bytecode size.

It removes the following code from the build:
* All other major modules: Base, Calc, Chart, Draw, Impress and
Math and related writerperfect filters
* The premultiply tables
* The (auto-)recovery functionality
* All accessibility (but not the accessibility document checker)
* The LanguageGuess component
* EPUB support
* The start center / BackingWindow
* The TipOfTheDay functionality
* The splash screen communication

Currently crashs with anything different then soffice --writer.
Closing the document also still crashes.

FYI: many of these features are now behind ENABLE_WASM_STRIP_*
defines, but they normally don't work on their own, globally!
That's because we started with stripping the main components.

Change-Id: Ib9c0f9452815910c0a2aceaf142ba1ad4a9cb0d7
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/126182
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>

5 files changed, 62 insertions, 24 deletions

diff --git a/oox/Library_oox.mk b/oox/Library_oox.mk
index f9a059b30147..979635a2f213 100644
--- a/oox/Library_oox.mk
+++ b/oox/Library_oox.mk
@@ -83,28 +83,10 @@ endif
 
 $(eval $(call gb_Library_set_componentfile,oox,oox/util/oox,services))
 
+# WASM_CHART change
+ifeq (,$(ENABLE_WASM_STRIP_CHART))
 $(eval $(call gb_Library_add_exception_objects,oox,\
-    oox/source/core/binarycodec \
-    oox/source/core/contexthandler2 \
-    oox/source/core/contexthandler \
-    oox/source/core/fastparser \
-    oox/source/core/fasttokenhandler \
-    oox/source/core/filterbase \
-    oox/source/core/filterdetect \
-    oox/source/core/fragmenthandler2 \
-    oox/source/core/fragmenthandler \
-    oox/source/core/recordparser \
-    oox/source/core/relations \
-    oox/source/core/relationshandler \
-    oox/source/core/xmlfilterbase \
-    oox/source/crypto/AgileEngine \
-    oox/source/crypto/CryptTools \
-    oox/source/crypto/DocumentEncryption \
-    oox/source/crypto/DocumentDecryption \
-    oox/source/crypto/Standard2007Engine \
-    oox/source/crypto/StrongEncryptionDataSpace \
-    oox/source/docprop/docprophandler \
-    oox/source/docprop/ooxmldocpropimport \
+    oox/source/export/chartexport \
     oox/source/drawingml/chart/axiscontext \
     oox/source/drawingml/chart/axisconverter \
     oox/source/drawingml/chart/axismodel \
@@ -132,6 +114,31 @@ $(eval $(call gb_Library_add_exception_objects,oox,\
     oox/source/drawingml/chart/typegroupcontext \
     oox/source/drawingml/chart/typegroupconverter \
     oox/source/drawingml/chart/typegroupmodel \
+))
+endif
+
+$(eval $(call gb_Library_add_exception_objects,oox,\
+    oox/source/core/binarycodec \
+    oox/source/core/contexthandler2 \
+    oox/source/core/contexthandler \
+    oox/source/core/fastparser \
+    oox/source/core/fasttokenhandler \
+    oox/source/core/filterbase \
+    oox/source/core/filterdetect \
+    oox/source/core/fragmenthandler2 \
+    oox/source/core/fragmenthandler \
+    oox/source/core/recordparser \
+    oox/source/core/relations \
+    oox/source/core/relationshandler \
+    oox/source/core/xmlfilterbase \
+    oox/source/crypto/AgileEngine \
+    oox/source/crypto/CryptTools \
+    oox/source/crypto/DocumentEncryption \
+    oox/source/crypto/DocumentDecryption \
+    oox/source/crypto/Standard2007Engine \
+    oox/source/crypto/StrongEncryptionDataSpace \
+    oox/source/docprop/docprophandler \
+    oox/source/docprop/ooxmldocpropimport \
     oox/source/drawingml/clrschemecontext \
     oox/source/drawingml/clrscheme \
     oox/source/drawingml/colorchoicecontext \
@@ -214,7 +221,6 @@ $(eval $(call gb_Library_add_exception_objects,oox,\
     oox/source/dump/dumperbase \
     oox/source/dump/oledumper \
     oox/source/dump/pptxdumper \
-    oox/source/export/chartexport \
     oox/source/export/ColorPropertySet \
     oox/source/export/drawingml \
     oox/source/export/DMLPresetShapeExport \
diff --git a/oox/source/drawingml/shape.cxx b/oox/source/drawingml/shape.cxx
index d0502558670e..6b0eb8c7102f 100644
--- a/oox/source/drawingml/shape.cxx
+++ b/oox/source/drawingml/shape.cxx
@@ -17,6 +17,8 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
+#include <config_wasm_strip.h>
+
 #include <oox/drawingml/shape.hxx>
 #include <drawingml/customshapeproperties.hxx>
 #include <oox/drawingml/theme.hxx>
@@ -1943,6 +1945,15 @@ void Shape::finalizeXShape( XmlFilterBase& rFilter, const Reference< XShapes >&
                 Reference< chart2::XChartDocument > xChartDoc( xDocModel, UNO_QUERY_THROW );
 
                 // load the chart data from the XML fragment
+#if ENABLE_WASM_STRIP_CHART
+                (void) rFilter;
+                (void) rxShapes;
+#else
+                // WASM_CHART change
+                // TODO: Instead of using convertFromModel an alternative may be
+                // added to convert not to Chart/OLE SdrObejct, but to GraphicObject
+                // with the Chart visualization. There should be a preiew available
+                // in the imported chart data
                 bool bMSO2007Doc = rFilter.isMSO2007Document();
                 chart::ChartSpaceModel aModel(bMSO2007Doc);
                 rtl::Reference<chart::ChartSpaceFragment> pChartSpaceFragment = new chart::ChartSpaceFragment(
@@ -1997,6 +2008,7 @@ void Shape::finalizeXShape( XmlFilterBase& rFilter, const Reference< XShapes >&
                     // Restore the original theme.
                     pPowerPointImport->getActualSlidePersist()->setTheme(pTheme);
                 }
+#endif
             }
             catch( Exception& )
             {
diff --git a/oox/source/export/shapes.cxx b/oox/source/export/shapes.cxx
index 1bc728854edd..54c6a58299e9 100644
--- a/oox/source/export/shapes.cxx
+++ b/oox/source/export/shapes.cxx
@@ -17,9 +17,11 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#include <sal/config.h>
+#include <config_wasm_strip.h>
 
+#include <sal/config.h>
 #include <sal/log.hxx>
+
 #include <filter/msfilter/util.hxx>
 #include <o3tl/string_view.hxx>
 #include <oox/core/xmlfilterbase.hxx>
@@ -2176,9 +2178,14 @@ ShapeExport& ShapeExport::WriteOLE2Shape( const Reference< XShape >& xShape )
         xPropSet->getPropertyValue("Model") >>= xChartDoc;
         assert(xChartDoc.is());
         //export the chart
+#if !ENABLE_WASM_STRIP_CHART
+        // WASM_CHART change
+        // TODO: With Chart extracted this cannot really happen since
+        // no Chart could've been added at all
         ChartExport aChartExport( mnXmlNamespace, GetFS(), xChartDoc, GetFB(), GetDocumentType() );
         static sal_Int32 nChartCount = 0;
         aChartExport.WriteChartObj( xShape, GetNewShapeID( xShape ), ++nChartCount );
+#endif
         return *this;
     }
 
diff --git a/oox/source/ppt/pptimport.cxx b/oox/source/ppt/pptimport.cxx
index 1f569d099876..8e35217ea590 100644
--- a/oox/source/ppt/pptimport.cxx
+++ b/oox/source/ppt/pptimport.cxx
@@ -17,6 +17,8 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
+#include <config_wasm_strip.h>
+
 #include <sal/config.h>
 #include <sal/log.hxx>
 
@@ -60,8 +62,12 @@ XmlFilterBase* PowerPointImport::mpDebugFilterBase = nullptr;
 
 PowerPointImport::PowerPointImport( const Reference< XComponentContext >& rxContext ) :
     XmlFilterBase( rxContext ),
+#if ENABLE_WASM_STRIP_CHART
+    // WASM_CHART change
+    mxChartConv( )
+#else
     mxChartConv( std::make_shared<::oox::drawingml::chart::ChartConverter>() )
-
+#endif
 {
 #if OSL_DEBUG_LEVEL > 0
     mpDebugFilterBase = this;
diff --git a/oox/source/shape/ShapeFilterBase.cxx b/oox/source/shape/ShapeFilterBase.cxx
index f5bb1af03955..38c310b47663 100644
--- a/oox/source/shape/ShapeFilterBase.cxx
+++ b/oox/source/shape/ShapeFilterBase.cxx
@@ -17,6 +17,8 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
+#include <config_wasm_strip.h>
+
 #include <oox/shape/ShapeFilterBase.hxx>
 #include <oox/drawingml/chart/chartconverter.hxx>
 #include <oox/drawingml/themefragmenthandler.hxx>
@@ -34,7 +36,12 @@ using namespace ::com::sun::star;
 
 ShapeFilterBase::ShapeFilterBase( const uno::Reference< uno::XComponentContext >& rxContext ) :
     XmlFilterBase( rxContext ),
+#if ENABLE_WASM_STRIP_CHART
+    // WASM_CHART change
+    mxChartConv( )
+#else
     mxChartConv( std::make_shared<::oox::drawingml::chart::ChartConverter>() )
+#endif
 {
 }