bool Fits::Open	(	const string &	fileName,
		const string &	tableName,
		uint32_t *	fitsCounter,
		MessageImp *	out,
		int	runNumber,
		CCfits::FITS *	file = 0
	)

Opens a FITS file.

This opens the FITS file (after the columns have been passed)

Parameters

fileName	the filename with complete or relative path of the file to open
tableName	the name of the table that will receive the logged data.
file	a pointer to an existing FITS file. If NULL, file will be opened and managed internally
fitsCounter	a pointer to the integer keeping track of the opened FITS files
out	a pointer to the MessageImp that should be used to log errors
runNumber	the runNumber for which this file is opened. 0 means nightly file.

Definition at line 156 of file Fits.cc.

References counter, MessageImp::Error(), fRunNumber, i, Time::Mjd(), and str.

{
    fRunNumber = runNumber;
    fMess = out;
    fFileName = fileName;

    if (fFile)
    {
        fMess->Error("File already open...");
        return false;
    }

    fFile = new FitsFile(*fMess);

    if (file == NULL)
    {
        if (!fFile->OpenFile(fileName, true))
            return false;

        fNumOpenFitsFiles = fitsCounter;
        (*fNumOpenFitsFiles)++;
    }
    else
    {
        if (!fFile->SetFile(file))
            return false;
    }

    //concatenate the standard and data columns
    //do it the inneficient way first: its easier and faster to code.
    for (unsigned int i=0;i<fStandardColDesc.size();i++)
    {
        fFile->AddColumn(fStandardColDesc[i].name, fStandardFormats[i],
                         fStandardColDesc[i].unit);
    }

    for (unsigned int i=0; i<fDataColDesc.size(); i++)
    {
        string name = fDataColDesc[i].name;
        if (name.empty())
        {
            ostringstream stt;
            stt << "Data" << i;
            name = stt.str();
        }
//cout << endl << "#####adding column: " << name << " " << fDataFormats[i] << " " << fDataColDesc[i].unit << endl << endl;
        fFile->AddColumn(name, fDataFormats[i], fDataColDesc[i].unit);
    }

    try
    {
        if (!fFile->OpenNewTable(tableName, 100))
        {
            Close();
            //if the file already exist, then the column names must have changed
            //let's move the file and try to open it again.
            string fileNameWithoutFits = fFileName.substr(0, fileName.size()-4);
            int counter = 0;
            while (counter < 100)
            {
                ostringstream newFileName;
                newFileName << fileNameWithoutFits << counter << ".fits";
                ifstream testStream(newFileName.str().c_str());
                if (!testStream)
                {
                    if (rename(fFileName.c_str(), newFileName.str().c_str()))
                        return false;
                    break;
                }
                counter++;
            }
            if (counter == 100)
                return false;
            //now we open it again.
            fFile = new FitsFile(*fMess);
            if (file == NULL)
            {
                if (!fFile->OpenFile(fileName, true))
                    return false;
                fNumOpenFitsFiles = fitsCounter;
                (*fNumOpenFitsFiles)++;
            }
            else
            {
                if (!fFile->SetFile(file))
                    return false;
            }
            //YES, we must also redo that thing here...
            //concatenate the standard and data columns
            //do it the inneficient way first: its easier and faster to code.
            for (unsigned int i=0;i<fStandardColDesc.size();i++)
            {
                fFile->AddColumn(fStandardColDesc[i].name, fStandardFormats[i],
                                 fStandardColDesc[i].unit);
            }

            for (unsigned int i=0; i<fDataColDesc.size(); i++)
            {
                string name = fDataColDesc[i].name;
                if (name.empty())
                {
                    ostringstream stt;
                    stt << "Data" << i;
                    name = stt.str();
                }
        //cout << endl << "#####adding column: " << name << " " << fDataFormats[i] << " " << fDataColDesc[i].unit << endl << endl;
                fFile->AddColumn(name, fDataFormats[i], fDataColDesc[i].unit);
            }
            if (!fFile->OpenNewTable(tableName, 100))
            {
                Close();
                return false;
            }
        }

        fCopyBuffer.resize(fFile->GetDataSize());
//write header comments

        ostringstream str;
        for (unsigned int i=0;i<fStandardColDesc.size();i++)
        {
            str.str("");
            str << "TTYPE" << i+1;
            fFile->WriteKeyNT(str.str(), fStandardColDesc[i].name, fStandardColDesc[i].comment);
            str.str("");
            str << "TCOMM" << i+1;
            fFile->WriteKeyNT(str.str(), fStandardColDesc[i].comment, "");
        }

        for (unsigned int i=0; i<fDataColDesc.size(); i++)
        {
            string name = fDataColDesc[i].name;
            if (name.empty())
            {
                ostringstream stt;
                stt << "Data" << i;
                name = stt.str();
            }
            str.str("");
            str << "TTYPE" << i+fStandardColDesc.size()+1;
            fFile->WriteKeyNT(str.str(), name, fDataColDesc[i].comment);
            str.str("");
            str << "TCOMM" << i+fStandardColDesc.size()+1;
            fFile->WriteKeyNT(str.str(), fDataColDesc[i].comment, "");
        }

        fFile->WriteKeyNT("COMMENT", fTableDesc, "");

        if (fFile->GetNumRows() == 0)
        {//if new file, then write header keys -> reset fEndMjD used as flag
            fEndMjD = 0;
        }
        else
        {//file is beingn updated. Prevent from overriding header keys
            fEndMjD = Time().Mjd();
        }

        return fFile->GetNumRows()==0 ? WriteHeaderKeys() : true;
    }
    catch (const CCfits::FitsException &e)
    {
        cout << "Exception !" << endl;
        fMess->Error("Opening or creating table '"+tableName+"' in '"+fileName+"': "+e.message());

        fFile->fTable = NULL;
        Close();
        return false;
    }
}

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