libfitsy

1 files changed, 89 insertions, 0 deletions

diff --git a/fitsy/strm.h b/fitsy/strm.h
new file mode 100644
index 0000000..22274ed
--- /dev/null
+++ b/fitsy/strm.h
@@ -0,0 +1,89 @@
+// Copyright (C) 1999-2018
+// Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+// For conditions of distribution and use, see copyright notice in "copyright"
+
+#ifndef __fitsstream_h__
+#define __fitsstream_h__
+
+#include "file.h"
+#include "zlib.h"
+
+typedef struct gzStream_ {
+  z_stream zstream;
+  int id;
+  int transparent;
+  unsigned char header[2];
+  int useHeader;
+  unsigned char* buf;
+} *gzStream;
+
+template<class T>
+class FitsStream : public FitsFile {
+ protected:
+  T stream_;
+  FitsFile::FlushMode flush_;
+  int dataManage_;           // flag, true if we manage data
+
+  FitsHead* headRead();
+  int dataRead(size_t bytes, int validate =1);
+  void dataSkip(size_t);
+  void dataSkipBlock(size_t);
+  void skipEnd();
+
+  size_t read(char*, size_t);
+  void close();
+  void found();
+  void error();
+
+public:
+  FitsStream();
+  virtual ~FitsStream();
+
+  T stream() {return stream_;}
+  FitsFile::FlushMode flush() {return flush_;}
+  int dataManage() {return dataManage_;}
+
+  void done() {close();}
+};
+
+template<class T>
+class FitsFitsStream : public virtual FitsStream<T> {
+protected:
+  void processExact();
+  void processRelax();
+
+public:
+  FitsFitsStream(FitsFile::ScanMode, FitsFile::FlushMode);
+};
+
+template<class T>
+class FitsFitsNextStream : public FitsStream<T> {
+public:
+  FitsFitsNextStream(FitsFile* prev);
+};
+
+template<class T>
+class FitsArrStream : public virtual FitsStream<T> {
+public:
+  FitsArrStream(FitsFile::FlushMode);
+};
+
+template<class T>
+class FitsNRRDStream : public virtual FitsStream<T> {
+public:
+  FitsNRRDStream(FitsFile::FlushMode);
+};
+
+template<class T>
+class FitsMosaicStream : public virtual FitsStream<T> {
+public:
+  FitsMosaicStream(FitsFile::FlushMode);
+};
+
+template<class T>
+class FitsMosaicNextStream : public FitsStream<T> {
+public:
+  FitsMosaicNextStream(FitsFile* prev, FitsFile::FlushMode);
+};
+
+#endif