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// Copyright (C) 1999-2018
// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
// For conditions of distribution and use, see copyright notice in "copyright"
#ifndef __fitshead_h__
#define __fitshead_h__
#define FTY_BLOCK 2880
#define FTY_CARDS (FTY_BLOCK/FTY_CARDLEN)
#include "card.h"
#include "hdu.h"
class FitsHead {
public:
enum Memory {ALLOC, EXTERNAL, MMAP, SHARE};
private:
char* cards_; // pointer to start of cards
char* mapdata_; // pointer to start of memory segment
size_t mapsize_; // size of memory segment
Memory memory_; // type memory mangement
int ncard_; // actual number of cards
int acard_; // number of cards block filled
int ccard_; // number of current card in seq
char** index_;
int valid_;
int inherit_;
FitsHDU* hdu_;
public:
FitsHead(char*, size_t, Memory);
FitsHead(char*, size_t, char*, size_t, Memory);
FitsHead(int width, int height, int depth, int bitpix, char* =NULL);
FitsHead(int width, int height, int depth, int bitpix, char*, size_t, Memory);
FitsHead(const FitsHead&);
~FitsHead();
char* cards() {return cards_;}
int ncard() {return ncard_;}
int acard() {return acard_;}
FitsHDU* hdu() {return hdu_;}
int inherit() {return inherit_;}
int isValid() {return valid_;}
int isImage();
int isTable();
int isAsciiTable();
int isBinTable();
int isHeap();
int cardblocks() {return ncard_/FTY_CARDS;}
int cardbytes() {return ncard_*FTY_CARDLEN;}
int headblocks() {return acard_/FTY_CARDS;}
int headbytes() {return acard_*FTY_CARDLEN;}
const char* extname() {return hdu_ ? hdu_->extname() : NULL;}
int extver() {return hdu_ ? hdu_->extver() : 1;}
int extlevel() {return hdu_ ? hdu_->extlevel() : 1;}
int bitpix() {return hdu_ ? hdu_->bitpix() : 0;}
int naxes() {return hdu_ ? hdu_->naxes() : 0;}
int naxis(int ii) {return hdu_ ? hdu_->naxis(ii) : 0;}
size_t realbytes() {return hdu_ ? hdu_->realbytes() : 0;}
size_t heapbytes() {return hdu_ ? hdu_->heapbytes() : 0;}
size_t allbytes() {return hdu_ ? hdu_->allbytes() : 0;}
size_t padbytes() {return hdu_ ? hdu_->padbytes() : 0;}
size_t databytes() {return hdu_ ? hdu_->databytes() : 0;}
size_t datablocks() {return hdu_ ? hdu_->datablocks() : 0;}
void buildIndex();
void updateHDU();
void updateCards() {if (hdu_) hdu_->updateCards(this);}
char* find(const char* name);
char* findSeq(const char* name);
char* findIndex(const char* name);
char* cardins(char* card, char* here);
char* carddel(const char* card);
char* cardclear(const char* card);
char* setKey(const char* name, const char* value);
char* setLogical(const char* name, int value, const char* comm);
char* setInteger(const char* name, int value, const char* comm);
char* setReal(const char* name, double value, int prec, const char* comm);
char* setComplex(const char* name, double real, double img, int prec,
const char* comm);
char* setString(const char* name, const char* value, const char* comm);
char* setComment(const char* name, const char* value);
char* insertLogical(const char* name, int value, const char* comm,
const char* here);
char* insertInteger(const char* name, int value, const char* comm,
const char* here);
char* insertReal(const char* name, double value,
int prec, const char* comm, const char* here);
char* insertComplex(const char* name, double real, double img,
int prec, const char* comm, const char* here);
char* insertString(const char* name, const char* value, const char* comm,
const char* here);
char* insertComment(const char* name, const char* value, const char* here);
char* appendLogical(const char* name, int value, const char* comm)
{return insertLogical(name, value, comm, NULL);}
char* appendInteger(const char* name, int value, const char* comm)
{return insertInteger(name, value, comm, NULL);}
char* appendReal(const char* name, double value, int prec, const char* comm)
{return insertReal(name, value, prec, comm, NULL);}
char* appendComplex(const char* name, double real, double img,
int prec, const char* comm)
{return insertComplex(name, real, img, prec, comm, NULL);}
char* appendString(const char* name, const char* value, const char* comm)
{return insertString(name, value, comm, NULL);}
int getLogical(const char* name, int def);
int getInteger(const char* name, int def);
double getReal(const char* name, double def);
void getComplex(const char* name, double* real, double* img,
double rdef, double idef);
char* getString(const char* name);
char* getComment(const char* name);
char* getKeyword(const char* name);
char* first();
char* next();
};
#endif
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