add calc rtf filter test hook

Change-Id: Ib15f1094929e1670537657b4c19cc1e0bfd39bbd
Reviewed-on: https://gerrit.libreoffice.org/40537
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/sc/source/filter/excel/excel.cxx b/sc/source/filter/excel/excel.cxx
index b6087bf..8abbd30 100644
--- a/sc/source/filter/excel/excel.cxx
+++ b/sc/source/filter/excel/excel.cxx
@@ -227,6 +227,15 @@ extern "C" SAL_DLLPUBLIC_EXPORT bool SAL_CALL TestImportQPW(SvStream &rStream)
    return ScFormatFilter::Get().ScImportQuattroPro(&rStream, &aDocument) == ERRCODE_NONE;
}

extern "C" SAL_DLLPUBLIC_EXPORT bool SAL_CALL TestImportCalcRTF(SvStream &rStream)
{
    ScDLL::Init();
    ScDocument aDocument;
    aDocument.MakeTable(0);
    ScRange aRange;
    return ScFormatFilter::Get().ScImportRTF(rStream, OUString(), &aDocument, aRange) == ERRCODE_NONE;
}

extern "C" SAL_DLLPUBLIC_EXPORT bool SAL_CALL TestImportXLS(const OUString &rURL)
{
    ScDLL::Init();
diff --git a/vcl/workben/fftester.cxx b/vcl/workben/fftester.cxx
index 48e1785..85c7e63 100644
--- a/vcl/workben/fftester.cxx
+++ b/vcl/workben/fftester.cxx
@@ -490,6 +490,20 @@ try_again:
                SvFileStream aFileStream(out, StreamMode::READ);
                ret = (int) (*pfnImport)(aFileStream);
            }
            else if (strcmp(argv[2], "sc-rtf") == 0)
            {
                static FFilterCall pfnImport(nullptr);
                if (!pfnImport)
                {
                    osl::Module aLibrary;
                    aLibrary.loadRelative(&thisModule, "libscfiltlo.so", SAL_LOADMODULE_LAZY);
                    pfnImport = reinterpret_cast<FFilterCall>(
                        aLibrary.getFunctionSymbol("TestImportCalcRTF"));
                    aLibrary.release();
                }
                SvFileStream aFileStream(out, StreamMode::READ);
                ret = (int) (*pfnImport)(aFileStream);
            }
            else if (strcmp(argv[2], "slk") == 0)
            {
                static FFilterCall pfnImport(nullptr);