1 files changed, 134 insertions, 0 deletions
diff --git a/fitsy/head.h b/fitsy/head.h
new file mode 100644
index 0000000..589e8fe
--- /dev/null
+++ b/fitsy/head.h
@@ -0,0 +1,134 @@
+// 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"
+#include "util.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