void FileIODevice::_open_file(bool for_write)
{
QFile::OpenMode flags;
if(for_write)
{
flags = QFile::WriteOnly;
if(GetWriteMode() == WriteAppend)
flags |= QFile::Append;
else if(GetWriteMode() == WriteOver)
flags |= QFile::Truncate;
else
throw NotImplementedException<>();
}
else
{
flags = QFile::ReadOnly;
}
File().open(flags);
if(!File().isOpen())
{
DataTransportException<true> ex(
QString("Could not open file: %1").arg(FileName()).toUtf8().constData());
ex.Data["err"] = File().errorString().toUtf8().constData();
throw ex;
}
}
int OGRTigerDataSource::TestCapability( const char *pszCap )
{
if( EQUAL(pszCap,ODsCCreateLayer) )
return GetWriteMode();
else
return FALSE;
}
void FileIODevice::TruncateFile()
{
FailIfReadOnly();
WriteModeEnum _md = GetWriteMode();
SetWriteMode(WriteOver);
Write("");
SetWriteMode(_md);
}