rework to remove intermediate stream

Change-Id: I6ff66cf6ea6ac38f7c36da7668b612b2062e4852
Reviewed-on: https://gerrit.libreoffice.org/48257
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

3 files changed, 15 insertions, 30 deletions

diff --git a/lotuswordpro/source/filter/bencont.cxx b/lotuswordpro/source/filter/bencont.cxx
index 71eda29213bd..c4125971d089 100644
--- a/lotuswordpro/source/filter/bencont.cxx
+++ b/lotuswordpro/source/filter/bencont.cxx
@@ -267,11 +267,12 @@ sal_uInt64 GetSvStreamSize(SvStream * pStream)
 *   Find hazily according to object ID
 *   @param  pObjectname - format as "GrXX,XXXXXXXX" wherein XX is high part of object ID, and XXXXXXXX is low part
 */
-SvMemoryStream* LtcBenContainer::CreateGraphicStream(const char *pObjectName)
+std::vector<sal_uInt8> LtcBenContainer::GetGraphicData(const char *pObjectName)
 {
+    std::vector<sal_uInt8> aData;
     if (!pObjectName)
     {
-        return nullptr;
+        return aData;
     }
     // construct the string of property name
     char sSName[64]="";
@@ -300,12 +301,11 @@ SvMemoryStream* LtcBenContainer::CreateGraphicStream(const char *pObjectName)
     // the 'D' stream is NULL or it has invalid length
     if (nLen <= 0)
     {
-        return nullptr;
+        return aData;
     }
 
-    char * pBuf = new char[nLen];
-    assert(pBuf != nullptr);
-    char * pPointer = pBuf;
+    aData.resize(nLen);
+    sal_uInt8* pPointer = aData.data();
     if (xD)
     {
         xD->ReadBytes(pPointer, nDLen);
@@ -318,11 +318,7 @@ SvMemoryStream* LtcBenContainer::CreateGraphicStream(const char *pObjectName)
         xS.reset();
     }
 
-    SvMemoryStream* pMemStream = new SvMemoryStream(pBuf, nLen, StreamMode::READ);
-    assert(pMemStream != nullptr);
-    pMemStream->ObjectOwnsMemory(true);
-
-    return pMemStream;
+    return aData;
 }
 
 sal_uLong LtcBenContainer::remainingSize() const
diff --git a/lotuswordpro/source/filter/bento.hxx b/lotuswordpro/source/filter/bento.hxx
index f1cd48b4abae..4608b9b21996 100644
--- a/lotuswordpro/source/filter/bento.hxx
+++ b/lotuswordpro/source/filter/bento.hxx
@@ -221,7 +221,7 @@ public: // Internal methods
 
     LtcUtBenValueStream * FindNextValueStreamWithPropertyName(const char * sPropertyName);
     LtcUtBenValueStream * FindValueStreamWithPropertyName(const char * sPropertyName);
-    SvMemoryStream* CreateGraphicStream(const char *pObjectName);
+    std::vector<sal_uInt8> GetGraphicData(const char *pObjectName);
 
     sal_uLong GetSize() const { return m_ulLength; }
 private: // Data
diff --git a/lotuswordpro/source/filter/lwpgrfobj.cxx b/lotuswordpro/source/filter/lwpgrfobj.cxx
index 30431b7a1bb3..f0e355125249 100644
--- a/lotuswordpro/source/filter/lwpgrfobj.cxx
+++ b/lotuswordpro/source/filter/lwpgrfobj.cxx
@@ -302,14 +302,13 @@ void LwpGraphicObject::CreateDrawObjects()
     GetBentoNamebyID(rMyID,  aGrfObjName);
 
     // get bento stream by the name
-    SvStream* pDrawObjStream = pBentoContainer->CreateGraphicStream(aGrfObjName.c_str());
-    if (pDrawObjStream)
+    std::vector<sal_uInt8> aData = pBentoContainer->GetGraphicData(aGrfObjName.c_str());
+    if (!aData.empty())
     {
-        LwpSdwFileLoader fileLoader(pDrawObjStream, this);
-        fileLoader.CreateDrawObjects(&m_vXFDrawObjects);
+        SvMemoryStream aDrawObjStream(aData.data(), aData.size(), StreamMode::READ);
 
-        delete pDrawObjStream;
-        pDrawObjStream = nullptr;
+        LwpSdwFileLoader fileLoader(&aDrawObjStream, this);
+        fileLoader.CreateDrawObjects(&m_vXFDrawObjects);
     }
 }
 
@@ -352,18 +351,8 @@ std::vector<sal_uInt8> LwpGraphicObject::GetRawGrafData()
     std::string aGrfObjName;
     GetBentoNamebyID(rMyID,  aGrfObjName);
 
-    // get bento stream by the name
-    SvMemoryStream* pMemGrafStream = pBentoContainer->CreateGraphicStream(aGrfObjName.c_str());
-    if (pMemGrafStream)
-    {
-        // read image data
-        aGrafData.resize(pMemGrafStream->GetEndOfData());
-        pMemGrafStream->ReadBytes(aGrafData.data(), aGrafData.size());
-
-        delete pMemGrafStream;
-    }
-
-    return aGrafData;
+    // get bento stream by the name and read image data
+    return pBentoContainer->GetGraphicData(aGrfObjName.c_str());
 }
 
 /**