GFitsHDU.hpp
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/***************************************************************************
* GFitsHDU.hpp - Abstract FITS extension base class *
* ----------------------------------------------------------------------- *
* copyright (C) 2008-2014 by Juergen Knoedlseder *
* ----------------------------------------------------------------------- *
* *
* This program is free software: you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
***************************************************************************/
/**
* @file GFitsHDU.hpp
* @brief Abstract FITS extension base class definition.
* @author Juergen Knoedlseder
*/
#ifndef GFITSHDU_HPP
#define GFITSHDU_HPP
/* __ Includes ___________________________________________________________ */
#include <string>
#include "GBase.hpp"
#include "GFitsHeader.hpp"
#include "GFitsHeaderCard.hpp"
/***********************************************************************//**
* @class GFitsHDU
*
* @brief Abstract FITS extension base class
*
* This class defines the abstract interface for a FITS extension, also known
* as Header Data Unit (HDU). Each HDU consists of a header and a data area.
* The header is composed of cards and is implemented by the GFitsHeader
* class. The data are is either an image or a table which are implemented
* as derived classes from GFitsHDU.
*
* @todo Implement GFitsHDU* select(const std::string& expr) that applies
* to a table HDU for row selection.
***************************************************************************/
class GFitsHDU : public GBase {
// Friend classes
friend class GFits;
public:
// Constructors and destructors
GFitsHDU(void);
GFitsHDU(const GFitsHDU& hdu);
virtual ~GFitsHDU(void);
// Operators
GFitsHDU& operator=(const GFitsHDU& hdu);
// Public enumerators
enum HDUType {
HT_IMAGE = 0,
HT_ASCII_TABLE = 1,
HT_BIN_TABLE = 2
};
// Pure virtual methods
virtual void clear(void) = 0;
virtual GFitsHDU* clone(void) const = 0;
virtual std::string classname(void) const = 0;
virtual HDUType exttype(void) const = 0;
virtual std::string print(const GChatter& chatter = NORMAL) const = 0;
// Implemented methods
int size(void) const;
const std::string& extname(void) const;
void extname(const std::string& extname);
const int& extno(void) const;
void extno(const int& extno);
GFitsHeader& header(void);
const GFitsHeader& header(void) const;
bool has_card(const int& cardno) const;
bool has_card(const std::string& keyname) const;
GFitsHeaderCard& card(const int& cardno);
const GFitsHeaderCard& card(const int& cardno) const;
GFitsHeaderCard& card(const std::string& keyname);
const GFitsHeaderCard& card(const std::string& keyname) const;
void card(const GFitsHeaderCard& card);
void card(const std::string& keyname,
const std::string& value,
const std::string& comment);
void card(const std::string& keyname,
const double& value,
const std::string& comment);
void card(const std::string& keyname,
const int& value,
const std::string& comment);
std::string string(const std::string& keyname) const;
double real(const std::string& keyname) const;
int integer(const std::string& keyname) const;
protected:
// Protected methods
void init_members(void);
void copy_members(const GFitsHDU& hdu);
void free_members(void);
void connect(void* fptr);
void move_to_hdu(void);
HDUType get_hdu_type(void) const;
void open(void* vptr, int hdunum);
void save(void);
std::string print_hdu(const GChatter& chatter = NORMAL) const;
std::string typecode(int type) const;
// Pure virtual protected methods
virtual void data_open(void* vptr) = 0;
virtual void data_save(void) = 0;
virtual void data_close(void) = 0;
virtual void data_connect(void* vptr) = 0;
// Protected data area
void* m_fitsfile; //!< FITS file pointer pointing on actual HDU
int m_hdunum; //!< HDU number (starting from 0)
std::string m_name; //!< HDU name (extname)
GFitsHeader m_header; //!< HDU header
};
/***********************************************************************//**
* @brief Return number of cards in HDU header
*
* @return Number of cards in HDU header.
*
* Returns the number of cards in the header of the FITS extension.
***************************************************************************/
inline
int GFitsHDU::size(void) const
{
return (m_header.size());
}
/***********************************************************************//**
* @brief Return extension name
*
* @return Extension name.
*
* Returns the name of the FITS extension.
***************************************************************************/
inline
const std::string& GFitsHDU::extname(void) const
{
return (m_name);
}
/***********************************************************************//**
* @brief Return extension number
*
* @return Extension number (starting from 0 for the primary image).
*
* Returns the number of the FITS extension.
***************************************************************************/
inline
const int& GFitsHDU::extno(void) const
{
return (m_hdunum);
}
/***********************************************************************//**
* @brief Set extension number
*
* @param[in] extno Extension number (starting from 0 for the primary image).
*
* Set the number of the FITS extension.
***************************************************************************/
inline
void GFitsHDU::extno(const int& extno)
{
m_hdunum = extno;
return;
}
/***********************************************************************//**
* @brief Return extension header
*
* @return Extension header.
*
* Returns the extension header.
***************************************************************************/
inline
GFitsHeader& GFitsHDU::header(void)
{
return (m_header);
}
/***********************************************************************//**
* @brief Return extension header (const version)
*
* @return Extension header.
*
* Returns the extension header.
***************************************************************************/
inline
const GFitsHeader& GFitsHDU::header(void) const
{
return (m_header);
}
/***********************************************************************//**
* @brief Check existence of header card
*
* @param[in] cardno Number of card in header.
* @return True if card with specified card number @p cardno exists in header.
***************************************************************************/
inline
bool GFitsHDU::has_card(const int& cardno) const
{
return m_header.contains(cardno);
}
/***********************************************************************//**
* @brief Checks for presence of header card
*
* @param[in] keyname Name of header card.
* @return True if card with specified @p keyname exists in header.
***************************************************************************/
inline
bool GFitsHDU::has_card(const std::string& keyname) const
{
return (m_header.contains(keyname));
}
/***********************************************************************//**
* @brief Return header card
*
* @param[in] cardno Number of card in header.
* @return Header card.
***************************************************************************/
inline
GFitsHeaderCard& GFitsHDU::card(const int& cardno)
{
return (m_header.at(cardno));
}
/***********************************************************************//**
* @brief Return header card (const version)
*
* @param[in] cardno Number of card in header.
* @return Header card.
***************************************************************************/
inline
const GFitsHeaderCard& GFitsHDU::card(const int& cardno) const
{
return (m_header.at(cardno));
}
/***********************************************************************//**
* @brief Return header card
*
* @param[in] keyname Name of header card.
* @return Header card.
***************************************************************************/
inline
GFitsHeaderCard& GFitsHDU::card(const std::string& keyname)
{
return (m_header.at(keyname));
}
/***********************************************************************//**
* @brief Return header card (const version)
*
* @param[in] keyname Name of header card.
* @return Header card.
***************************************************************************/
inline
const GFitsHeaderCard& GFitsHDU::card(const std::string& keyname) const
{
return (m_header.at(keyname));
}
/***********************************************************************//**
* @brief Append or update header card
*
* @param[in] card Header card.
***************************************************************************/
inline
void GFitsHDU::card(const GFitsHeaderCard& card)
{
m_header.append(card);
return;
}
/***********************************************************************//**
* @brief Append or update string value header card
*
* @param[in] keyname Name of the header card.
* @param[in] value String value of the header card.
* @param[in] comment Comment of the header card.
***************************************************************************/
inline
void GFitsHDU::card(const std::string& keyname, const std::string& value,
const std::string& comment)
{
m_header.append(GFitsHeaderCard(keyname, value, comment));
return;
}
/***********************************************************************//**
* @brief Append or update double precision value header card
*
* @param[in] keyname Name of the header card.
* @param[in] value Double precision value of the header card.
* @param[in] comment Comment of the header card.
***************************************************************************/
inline
void GFitsHDU::card(const std::string& keyname, const double& value,
const std::string& comment)
{
m_header.append(GFitsHeaderCard(keyname, value, comment));
return;
}
/***********************************************************************//**
* @brief Append or update integer value header card
*
* @param[in] keyname Name of the header card.
* @param[in] value Integer value of the header card.
* @param[in] comment Comment of the header card.
***************************************************************************/
inline
void GFitsHDU::card(const std::string& keyname, const int& value,
const std::string& comment)
{
m_header.append(GFitsHeaderCard(keyname, value, comment));
return;
}
/***********************************************************************//**
* @brief Return card value as string
*
* @param[in] keyname Name of header card.
* @return String card value.
***************************************************************************/
inline
std::string GFitsHDU::string(const std::string& keyname) const
{
return (m_header.at(keyname).string());
}
/***********************************************************************//**
* @brief Return card value as double precision
*
* @param[in] keyname Name of header card.
* @return Double precision card value.
***************************************************************************/
inline
double GFitsHDU::real(const std::string& keyname) const
{
return (m_header.at(keyname).real());
}
/***********************************************************************//**
* @brief Return card value as integer
*
* @param[in] keyname Name of header card.
* @return Integer card value.
***************************************************************************/
inline
int GFitsHDU::integer(const std::string& keyname) const
{
return (m_header.at(keyname).integer());
}
#endif /* GFITSHDU_HPP */