EPUB export: allow setting a custom version

By parsing the FilterData key of the media descriptor, similar to how
the PDF export does it.

The default is still EPUB3, but this now exposes the ability of
libepubgen to emit EPUB2 if wanted.

Change-Id: I23834fa28db9b01ef4cce4a142331b1cc9ecb3c2
Reviewed-on: https://gerrit.libreoffice.org/41566
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>

1 files changed, 18 insertions, 1 deletions

diff --git a/writerperfect/source/writer/EPUBExportFilter.cxx b/writerperfect/source/writer/EPUBExportFilter.cxx
index 465d8bc256ac..ac16cd570198 100644
--- a/writerperfect/source/writer/EPUBExportFilter.cxx
+++ b/writerperfect/source/writer/EPUBExportFilter.cxx
@@ -34,13 +34,30 @@ EPUBExportFilter::EPUBExportFilter(const uno::Reference<uno::XComponentContext>
 
 sal_Bool EPUBExportFilter::filter(const uno::Sequence<beans::PropertyValue> &rDescriptor)
 {
+    sal_Int32 nVersion = 30;
+    uno::Sequence<beans::PropertyValue> aFilterData;
+    for (sal_Int32 i = 0; i < rDescriptor.getLength(); ++i)
+    {
+        if (rDescriptor[i].Name == "FilterData")
+        {
+            rDescriptor[i].Value >>= aFilterData;
+            break;
+        }
+    }
+
+    for (sal_Int32 i = 0; i < aFilterData.getLength(); ++i)
+    {
+        if (aFilterData[i].Name == "EPUBVersion")
+            aFilterData[i].Value >>= nVersion;
+    }
+
     // Build the export filter chain: the package has direct access to the ZIP
     // file, the flat ODF filter has access to the doc model, everything else
     // is in-between.
     EPUBPackage aPackage(mxContext, rDescriptor);
     libepubgen::EPUBTextGenerator aGenerator(&aPackage, libepubgen::EPUB_SPLIT_METHOD_HEADING
 #if LIBEPUBGEN_VERSION_SUPPORT
-                                             , /*version=*/30
+                                             , nVersion
 #endif
                                             );
     uno::Reference<xml::sax::XDocumentHandler> xExportHandler(new exp::XMLImport(aGenerator));