毛勇岗 wrote:
> Thank you for your suggestions.
> As you said I analyzed the call stack. And in the SfxMedium*
> SfxApplication::InsertDocumentDialog(sfx2\source\appl\appopen.cxx),
> sal_uInt32 nError = pMatcher->DetectFilter( *pMedium, &pFilter, FALSE );
> if ( nError == ERRCODE_NONE && pFilter )
> pMedium->SetFilter( pFilter );
> else
> DELETEZ( pMedium );
> when insert a *.mpeg, the "nError == ERRCODE_NONE && pFilter " always is
> true.Then the program crash.
> If I change
> sRealType = ::rtl::OUString::createFromAscii("calc_Text_txt_csv_StarCalc");
> To:
> sRealType = ::rtl::OUString::createFromAscii("writer_Text_encoded");
> in TypeDetection::impl_checkResultsAndAddBestFilter(...)
> (filter\source\config\cache\typedetection.cxx), The bug will be fixed.
> I'm looking forward to your advice！
So Calc tries to load the the MPEG file as CSV (text) file. As far as I
can see, the problems are from the display of the resulting strings in
the filter options dialog.
Your change would probably break the use of valid CSV files with unknown
extensions in the same situation again (issue 60158).
Calc's filter detection service already contains logic to reject CSV
files that have null bytes in unexpected positions, but in this
"workaround" case, the filter is selected without calling its detection
service. Maybe that can be changed, but generally, the filter detection
code can be quite fragile. I'm cc'ing the framework list.
Niklas
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