libfitsy++

1 files changed, 67 insertions, 0 deletions

diff --git a/fitsy++/mapincr.h b/fitsy++/mapincr.h
new file mode 100644
index 0000000..fcdea15
--- /dev/null
+++ b/fitsy++/mapincr.h
@@ -0,0 +1,67 @@
+// Copyright (C) 1999-2018
+// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+// For conditions of distribution and use, see copyright notice in "copyright"
+
+#ifndef __fitsmapincr_h__
+#define __fitsmapincr_h__
+
+#include "file.h"
+
+class FitsMapIncr : public FitsFile {
+protected:
+  char* mapdata_;  // mmap segment ptr
+  size_t mapsize_;  // mmap segment size
+  int page_;       // flag to indicate paging mode
+
+  size_t filesize_; // size of the total segment
+  size_t seek_;     // offset into segment
+  size_t dseek_;    // offset to data segment
+  size_t nseek_;    // offset into next page data segment
+
+  FitsHead* headRead();
+  void dataSkip(size_t);
+  void dataSkipBlock(size_t);
+  void found();
+  void error();
+
+public:
+  FitsMapIncr();
+  virtual ~FitsMapIncr();
+
+  char* page(char*, size_t);
+  void resetpage();
+  size_t filesize() {return filesize_;}
+  size_t seek() {return seek_;}
+};
+
+class FitsFitsMapIncr : public virtual FitsMapIncr {
+protected:
+  void processExact();
+  void processRelax();
+
+public:
+  FitsFitsMapIncr(ScanMode);
+};
+
+class FitsFitsNextMapIncr : public FitsMapIncr {
+public:
+  FitsFitsNextMapIncr(FitsFile* prev);
+};
+
+class FitsArrMapIncr : public virtual FitsMapIncr {
+public:
+  FitsArrMapIncr();
+};
+
+class FitsMosaicMapIncr : public virtual FitsMapIncr {
+public:
+  FitsMosaicMapIncr();
+};
+
+class FitsMosaicNextMapIncr : public FitsMapIncr {
+public:
+  FitsMosaicNextMapIncr(FitsFile* prev);
+};
+
+#endif
+