fdo#59022: revert "SfxMedium::GetOutputStream(): re-use existing XStream"

Revert commit 0c220608, since this
apparently causes failure to open ODF files via SMB on Linux.

Instead of changing SfxMedium, adjust the ScExportTest: when saving
XLSX files interactively, the SfxFilter::lFormat is always 0, which
causes SfxObjectShell::SaveTo_Impl not to call
SfxMedium::GetOutputStorage() at all, working around the locking issue
on WNT.

Change-Id: I0ab8b4262475e4c8425eebb1413997457e5e9417

sc/qa/unit/subsequent_export-test.cxx

@@ -127,7 +127,7 @@ ScDocShellRef ScExportTest::saveAndReloadPassword(ScDocShell* pShell, const rtl:
     aTempFile.EnableKillingFile();
     SfxMedium aStoreMedium( aTempFile.GetURL(), STREAM_STD_WRITE );
     sal_uInt32 nExportFormat = 0;
-    if (nFormatType)
+    if (nFormatType == ODS_FORMAT_TYPE)
         nExportFormat = SFX_FILTER_EXPORT | SFX_FILTER_USESOPTIONS;
     SfxFilter* pExportFilter = new SfxFilter(
         rFilter,
@@ -150,7 +150,7 @@ ScDocShellRef ScExportTest::saveAndReloadPassword(ScDocShell* pShell, const rtl:
     //std::cout << "File: " << aTempFile.GetURL() << std::endl;
 
     sal_uInt32 nFormat = 0;
-    if (nFormatType)
+    if (nFormatType == ODS_FORMAT_TYPE)
         nFormat = SFX_FILTER_IMPORT | SFX_FILTER_USESOPTIONS;
 
     OUString aPass("test");
@@ -165,7 +165,7 @@ ScDocShellRef ScExportTest::saveAndReload(ScDocShell* pShell, const rtl::OUStrin
     aTempFile.EnableKillingFile();
     SfxMedium aStoreMedium( aTempFile.GetURL(), STREAM_STD_WRITE );
     sal_uInt32 nExportFormat = 0;
-    if (nFormatType)
+    if (nFormatType == ODS_FORMAT_TYPE)
         nExportFormat = SFX_FILTER_EXPORT | SFX_FILTER_USESOPTIONS;
     SfxFilter* pExportFilter = new SfxFilter(
         rFilter,
@@ -179,7 +179,7 @@ ScDocShellRef ScExportTest::saveAndReload(ScDocShell* pShell, const rtl::OUStrin
     //std::cout << "File: " << aTempFile.GetURL() << std::endl;
 
     sal_uInt32 nFormat = 0;
-    if (nFormatType)
+    if (nFormatType == ODS_FORMAT_TYPE)
         nFormat = SFX_FILTER_IMPORT | SFX_FILTER_USESOPTIONS;
 
     return load(aTempFile.GetURL(), rFilter, rUserData, rTypeName, nFormat, nFormatType);

sfx2/source/doc/docfile.cxx

@@ -636,20 +636,13 @@ SvStream* SfxMedium::GetOutStream()
 
         if ( pImp->pTempFile )
         {
-            // try to re-use XOutStream from xStream if that exists;
-            // opening new SvFileStream in this situation may fail on
-            // Windows with ERROR_SHARING_VIOLATION
-            if (pImp->xStream.is())
-            {
-                assert(pImp->xStream->getOutputStream().is()); // need that...
-                pImp->m_pOutStream = utl::UcbStreamHelper::CreateStream(
-                        pImp->xStream, false);
-            }
-            else
-            {
-                pImp->m_pOutStream = new SvFileStream(
+            // don't try to re-use XOutStream from xStream if that exists;
+            // it causes fdo#59022 (fails opening files via SMB on Linux)
+            // OTOH opening new SvFileStream in this situation may fail on
+            // Windows with ERROR_SHARING_VIOLATION... but that is apparently
+            // not a problem in practice currently
+            pImp->m_pOutStream = new SvFileStream(
                         pImp->m_aName, STREAM_STD_READWRITE);
-            }
             CloseStorage();
         }
     }