[Libreoffice-commits] core.git: sc/source

[Noel Grandin (via logerrit)]

 sc/source/filter/orcus/filterdetect.cxx |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

New commits:
commit 7bf2515fc48ed0d4c436aef298fa9c35e573352b
Author:     Noel Grandin <noel.grandin at collabora.co.uk>
AuthorDate: Mon Jun 3 10:04:58 2019 +0200
Commit:     Noel Grandin <noel.grandin at collabora.co.uk>
CommitDate: Mon Jun 3 15:24:14 2019 +0200

    tdf#67538 XTypeDetection::queryTypeByDescriptor poor performance, part3
    
    Size the OUStringBuffer in OrcusFormatDetect::detect better at
    construction, to avoid re-alloc.
    
    This is specifically fixing the performance of queryTypeByDescriptor
    when called from a basic macro on a local test file.
    
    This takes my test macro from 9s to 8s
    
    Change-Id: Id4c2bf386de172b1deed98efece8c1f040c599a5
    Reviewed-on: https://gerrit.libreoffice.org/73376
    Tested-by: Jenkins
    Reviewed-by: Noel Grandin <noel.grandin at collabora.co.uk>

diff --git a/sc/source/filter/orcus/filterdetect.cxx b/sc/source/filter/orcus/filterdetect.cxx
index a9b064b01fbb..fb142d86b579 100644
--- a/sc/source/filter/orcus/filterdetect.cxx
+++ b/sc/source/filter/orcus/filterdetect.cxx
@@ -68,11 +68,11 @@ OUString OrcusFormatDetect::detect(css::uno::Sequence<css::beans::PropertyValue>
         return OUString();
 
     css::uno::Reference<css::io::XInputStream> xInputStream(aMediaDescriptor[utl::MediaDescriptor::PROP_INPUTSTREAM()], css::uno::UNO_QUERY );
+    OStringBuffer aContent(xInputStream->available());
 
     static const sal_Int32 nBytes = 4096;
     css::uno::Sequence<sal_Int8> aSeq(nBytes);
     bool bEnd = false;
-    OStringBuffer aContent;
     while(!bEnd)
     {
         sal_Int32 nReadBytes = xInputStream->readBytes(aSeq, nBytes);