bool DataWriteFits2::Open ( const RUN_HEAD &  h, const FAD::RunDescription &  d  )

virtual

DataWriteFits constructor. This is the one that should be used, not the default one (parameter-less)

Parameters

runid	This parameter should probably be removed. I first thought it was the run number, but apparently it is not
h	a pointer to the RUN_HEAD structure that contains the informations relative to this run

Implements DataProcessorImp.

Definition at line 171 of file DataWriteFits2.cc.

References zofits::DefaultMaxNumTiles(), zofits::DefaultNumRowsPerTile(), MessageImp::Error(), fFile, DataProcessorImp::fFileName, DataProcessorImp::FormFileName(), zofits::SetNumTiles(), str, and WriteHeader().

Referenced by GetDrsStep(), and DataCalib::Open().

{
    //Form filename, based on runid and run-type
    fFileName = FormFileName(dynamic_pointer_cast<factofits>(fFile)?"fits.fz":"fits");

    if (boost::filesystem::exists(fFileName))
    {
        Error("ofits - file '"+fFileName+"' already exists.");
        return false;
    }

    zofits *fits = dynamic_cast<zofits*>(fFile.get());
    if (fits)
    {
        const uint32_t nrpt = zofits::DefaultNumRowsPerTile();

        // Maximum number of events if taken with 100Hz
        // (If no limit requested, maxtime is 24*60*60)
        const uint32_t ntime = d.maxtime*100/nrpt;

        // Maximum number of events if taken as number
        // (If no limit requested, maxevts is INT32_MAX)
        const uint32_t nevts = d.maxevt/nrpt+1;

        // get the minimum of all three
        uint32_t num = zofits::DefaultMaxNumTiles();
        if (ntime<num)
            num = ntime;
        if (nevts<num)
            num = nevts;

        fits->SetNumTiles(num);
    }

    try
    {
        fFile->open(fFileName.c_str());
    }
    catch (const exception &e)
    {
        Error("ofits::open() failed for '"+fFileName+"': "+e.what());
        return false;
    }

    if (!(*fFile))
    {
        ostringstream str;
        str << "ofstream::open() failed for '" << fFileName << "': " << strerror(errno) << " [errno=" << errno << "]";
        Error(str);
        return false;
    }

    try
    {
        WriteHeader(h, d);
    }
    catch (const exception &e)
    {
        Error("ofits - Writing header failed for '"+fFileName+"': "+e.what());
        return false;
    }

    if (!(*fFile))
    {
        ostringstream str;
        str << "ofstream::write() failed for '" << fFileName << "': " << strerror(errno) << " [errno=" << errno << "]";
        Error(str);
        return false;
    }

    return true;
}

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