EPUB export: allow setting custom media dir explicitly

The default is the same <base directory>/<base name>/ as before.

Change-Id: Idb500193a7f6bd901d861e857147832a3ada91d3
Reviewed-on: https://gerrit.libreoffice.org/45602Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>

writerperfect/qa/unit/EPUBExportTest.cxx

@@ -90,6 +90,7 @@ public:
     void testImageLink();
     void testFootnote();
     void testPopup();
+    void testPopupAPI();
 
     CPPUNIT_TEST_SUITE(EPUBExportTest);
     CPPUNIT_TEST(testOutlineLevel);
@@ -128,6 +129,7 @@ public:
     CPPUNIT_TEST(testImageLink);
     CPPUNIT_TEST(testFootnote);
     CPPUNIT_TEST(testPopup);
+    CPPUNIT_TEST(testPopupAPI);
     CPPUNIT_TEST_SUITE_END();
 };
 
@@ -724,6 +726,27 @@ void EPUBExportTest::testPopup()
     assertXPath(mpXmlDoc, "//xhtml:body/xhtml:aside[2]/xhtml:img", 1);
 }
 
+void EPUBExportTest::testPopupAPI()
+{
+    // Make sure that the popup works with data from a media directory.
+    OUString aMediaDir = m_directories.getURLFromSrc(DATA_DIRECTORY) + "popup";
+    uno::Sequence<beans::PropertyValue> aFilterData(comphelper::InitPropertySequence(
+    {
+        {"RVNGMediaDir", uno::makeAny(aMediaDir)}
+    }));
+    createDoc("popup-api.odt", aFilterData);
+
+    // We have a non-empty anchor image.
+    mpXmlDoc = parseExport("OEBPS/sections/section0001.xhtml");
+    OUString aAnchor = getXPath(mpXmlDoc, "//xhtml:body/xhtml:p[1]/xhtml:a/xhtml:img", "src");
+    CPPUNIT_ASSERT(!aAnchor.isEmpty());
+    // We have a non-empty popup image.
+    OUString aData = getXPath(mpXmlDoc, "//xhtml:body/xhtml:aside[1]/xhtml:img", "src");
+    CPPUNIT_ASSERT(!aData.isEmpty());
+    // The anchor is different from the popup image.
+    CPPUNIT_ASSERT(aAnchor != aData);
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(EPUBExportTest);
 
 }

writerperfect/source/writer/exp/xmlimp.cxx

@@ -113,6 +113,37 @@ OUString FindCoverImage(const OUString &rDocumentBaseURL, OUString &rMimeType, c
     return aRet;
 }
 
+/// Determines the base directory for cover images, XMP metadata, popup images.
+OUString FindMediaDir(const OUString &rDocumentBaseURL, const uno::Sequence<beans::PropertyValue> &rFilterData)
+{
+    OUString aMediaDir;
+
+    // See if filter data contains a media directory explicitly.
+    for (sal_Int32 i = 0; i < rFilterData.getLength(); ++i)
+    {
+        if (rFilterData[i].Name == "RVNGMediaDir")
+        {
+            rFilterData[i].Value >>= aMediaDir;
+            break;
+        }
+    }
+
+    if (!aMediaDir.isEmpty())
+        return aMediaDir + "/";
+
+    // Not set explicitly, try to pick it up from the base directory.
+    INetURLObject aURL(rDocumentBaseURL);
+    try
+    {
+        aMediaDir = rtl::Uri::convertRelToAbs(rDocumentBaseURL, aURL.GetBase()) + "/";
+    }
+    catch (const rtl::MalformedUriException &rException)
+    {
+        SAL_WARN("writerperfect", "FindMediaDir: convertRelToAbs() failed:" << rException.getMessage());
+    }
+    return aMediaDir;
+}
+
 /// Picks up XMP metadata from the base directory.
 void FindXMPMetadata(const uno::Reference<uno::XComponentContext> &xContext, const OUString &rDocumentBaseURL, const uno::Sequence<beans::PropertyValue> &rFilterData, librevenge::RVNGPropertyList &rMetaData)
 {
@@ -256,6 +287,8 @@ XMLImport::XMLImport(const uno::Reference<uno::XComponentContext> &xContext, lib
         }
     }
 
+    maMediaDir = FindMediaDir(rURL, aFilterData);
+
     OUString aMimeType;
     OUString aCoverImage = FindCoverImage(rURL, aMimeType, aFilterData);
     if (!aCoverImage.isEmpty())
@@ -303,16 +336,7 @@ bool XMLImport::FillPopupData(const OUString &rURL, librevenge::RVNGPropertyList
     if (!bRelative)
         return false;
 
-    OUString aAbs;
-    INetURLObject aBaseURL(maDocumentBaseURL);
-    try
-    {
-        aAbs = rtl::Uri::convertRelToAbs(maDocumentBaseURL, aBaseURL.GetBase() + "/" + rURL);
-    }
-    catch (const rtl::MalformedUriException &rException)
-    {
-        SAL_WARN("writerperfect", "XMLImport::FillPopupData: convertRelToAbs() failed:" << rException.getMessage());
-    }
+    OUString aAbs = maMediaDir + rURL;
     if (aAbs.isEmpty())
         return false;
 

writerperfect/source/writer/exp/xmlimp.hxx

@@ -58,6 +58,7 @@ class XMLImport : public cppu::WeakImplHelper
     const css::uno::Reference<css::uno::XComponentContext> &mxContext;
     css::uno::Reference<css::uri::XUriReferenceFactory> mxUriReferenceFactory;
     OUString maDocumentBaseURL;
+    OUString maMediaDir;
 
 public:
     XMLImport(const css::uno::Reference<css::uno::XComponentContext> &xContext, librevenge::RVNGTextInterface &rGenerator, const OUString &rURL, const css::uno::Sequence<css::beans::PropertyValue> &rDescriptor);