fdo#39001 RTF import: fix fake empty page at the end of the doc

In case we have a \sect, there was no \sbknone (so it counts as a page
break as well) and there is nothing after it, we should not make extra
efforts to make that have some effect, but adding at least one empty
paragraph to that new page.

Change-Id: Ibcbecabcb590ed34ef96a97698e4ab8f638d3483

sw/qa/extras/rtfimport/data/fdo39001.rtf

+{\rtf1 \ansi 
+{\*\generator Apache XML Graphics RTF Library;}
+\fet0 \ftnbj \paperw11905 \paperh16837 \margt2267 \margb1133 \margl1417 \margr1417 \headery2267 \footery1984 \itap0 
+\sectd 
+{\li0 \f3 \b0 \ql \ri0 \fs24 \cf1 \i0 
+{\f3 \strike0 \ul0 \b0 \sa0 \sb0 \fs24 \cf1 \i0 
+FIRST PAGE
+\par 
+}
+}\sect \sbkpage 
+{\li0 \f3 \b0 \ql \ri0 \fs24 \cf1 \i0 
+{\f3 \strike0 \ul0 \b0 \sa0 \sb0 \fs24 \cf1 \i0 
+NEXT PAGE
+\par 
+}
+}
+{\li0 \f3 \sbkpage \b0 \ql \sect \ri0 \fs24 \cf1 \i0 
+{\f3 \strike0 \ul0 \b0 \sa0 \sb0 \fs24 \cf1 \i0 
+LAST PAGE
+\par 
+}
+}\sect }

sw/qa/extras/rtfimport/rtfimport.cxx

@@ -150,6 +150,7 @@ public:
     void testFdo66040();
     void testN823675();
     void testFdo47802();
+    void testFdo39001();
 
     CPPUNIT_TEST_SUITE(Test);
 #if !defined(MACOSX) && !defined(WNT)
@@ -285,6 +286,7 @@ void Test::run()
         {"fdo66040.rtf", &Test::testFdo66040},
         {"n823675.rtf", &Test::testN823675},
         {"fdo47802.rtf", &Test::testFdo47802},
+        {"fdo39001.rtf", &Test::testFdo39001},
     };
     header();
     for (unsigned int i = 0; i < SAL_N_ELEMENTS(aMethods); ++i)
@@ -1387,6 +1389,12 @@ void Test::testFdo47802()
     CPPUNIT_ASSERT_EQUAL(sal_Int32(1), xDraws->getCount());
 }
 
+void Test::testFdo39001()
+{
+    // Document was of 4 pages, \sect at the end of the doc wasn't ignored.
+    CPPUNIT_ASSERT_EQUAL(3, getPages());
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(Test);
 
 CPPUNIT_PLUGIN_IMPLEMENT();

writerfilter/source/rtftok/rtfdocumentimpl.cxx

@@ -505,8 +505,11 @@ void RTFDocumentImpl::sectBreak(bool bFinal = false)
 {
     SAL_INFO("writerfilter", OSL_THIS_FUNC << ": final? " << bFinal << ", needed? " << m_bNeedSect);
     bool bNeedSect = m_bNeedSect;
-    // If there is no paragraph in this section, then insert a dummy one, as required by Writer
-    if (m_bNeedPar)
+    RTFValue::Pointer_t pBreak = m_aStates.top().aSectionSprms.find(NS_sprm::LN_SBkc);
+    bool bContinuous = pBreak.get() && pBreak->getInt() == 0;
+    // If there is no paragraph in this section, then insert a dummy one, as required by Writer,
+    // unless this is the end of the doc, we had nothing since the last section break and this is not a continuous one.
+    if (m_bNeedPar && !(bFinal && !m_bNeedSect && !bContinuous))
         dispatchSymbol(RTF_PAR);
     // It's allowed to not have a non-table paragraph at the end of an RTF doc, add it now if required.
     if (m_bNeedFinalPar && bFinal)
@@ -525,9 +528,8 @@ void RTFDocumentImpl::sectBreak(bool bFinal = false)
     // last control word in the document is a section break itself.
     if (!bNeedSect || !m_bHadSect)
     {
-        RTFValue::Pointer_t pBreak = m_aStates.top().aSectionSprms.find(NS_sprm::LN_SBkc);
-        // In case the last section is a continous one, we don't need to output a section break.
-        if (bFinal && pBreak.get() && !pBreak->getInt())
+        // In case the last section is a continuous one, we don't need to output a section break.
+        if (bFinal && bContinuous)
             m_aStates.top().aSectionSprms.erase(NS_sprm::LN_SBkc);
     }