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FITSError.h
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//# FITSError.h: default FITS error handling function, typdef, and enumeration
//# Copyright (C) 1999
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: casa-feedback@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
#ifndef FITS_FITSERROR_H
#define FITS_FITSERROR_H
//#! Includes go here
#include <casacore/casa/aips.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
// <summary>
// default FITS error handling function, typdef, and enumeration
// </summary>
// <use visibility=export>
// <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="" demos="">
// </reviewed>
// <synopsis>
// FITSError contains the enumeration specifying the possible error
// message levels. It also contains the default error handling function
// for the FITS classes.
// </synopsis>
//
// <example>
// This example shows how one could set up an error handler
// which does what the FITS classes originally did - just
// send the error message to cout without any indication as
// to the severity of the error message.
// <srcblock>
// void coutErrHandler(const char *errMessage, FITSError::ErrorLevel)
// { cout << errMessage << endl; }
//
// FitsInput fin("myFile", FITS::Disk, 10, coutErrHandler);
// </srcblock>
// Any error messages generated by fin will be sent to cout.
// Error handlers for the HDUs would need to be indicated in
// their constructors. For example:
// <srcblock>
// PrimaryArray<Float> pa(fin, coutErrHandler);
// </srcblock>
// The default error handler is FITSError::defaultHandler which
// sends the error message to the global log sink at the
// severity implied by ErrorLevel.
//
// The error handler only handles the error messages. It is up to
// the programmer to check for the error status of classes like
// FitsInput.
// </example>
//
// <motivation>
// Originally, FITS error message were simply sent to an ostream. In
// order to have these error messages go to the Casacore logger by default,
// this class was added. This was made a separate class because both
// BlockIo and FITS need to use this class. The anticipated replacements
// for the current FITS classes use a somewhat similar scheme.
// </motivation>
class FITSError
{
public:
// WARN means that the FITS file is still usable - this generally
// happens when parsing the HDU and some minor, recoverable
// violation of the FITS rules is detected.
// SEVERE means that a fatal error has occurred and the FITS file
// can not be properly processed.
enum ErrorLevel { INFO, WARN, SEVERE };
// The default error handler. The errMessage is posted to
// the global log sink at the severity implied by ErrorLevel.
// It is assumed that errMessage is null terminated.
static void defaultHandler(const char *errMessage, ErrorLevel severity);
};
// <summary>
// Define a typedef for the handler function signature for convenience.
// </summary>
// <use visibility=export>
// <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="" demos="">
// </reviewed>
typedef void (*FITSErrorHandler) (const char* errMessage,
FITSError::ErrorLevel severity);
} //# NAMESPACE CASACORE - END
#endif
casacore::FITSError
Definition FITSError.h:84
casacore::FITSError::ErrorLevel
ErrorLevel
WARN means that the FITS file is still usable - this generally happens when parsing the HDU and some ...
Definition FITSError.h:92
casacore::FITSError::WARN
@ WARN
Definition FITSError.h:92
casacore::FITSError::INFO
@ INFO
Definition FITSError.h:92
casacore::FITSError::SEVERE
@ SEVERE
Definition FITSError.h:92
casacore::FITSError::defaultHandler
static void defaultHandler(const char *errMessage, ErrorLevel severity)
The default error handler.
casacore::FITSErrorHandler
void(* FITSErrorHandler)(const char *errMessage, FITSError::ErrorLevel severity)
Define a typedef for the handler function signature for convenience.
Definition FITSError.h:108
casacore
this file contains all the compiler specific defines
Definition mainpage.dox:28