lt_ioFileStream.h

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/* $Id$ */
/* //////////////////////////////////////////////////////////////////////////
//                                                                         //
// This code is Copyright (c) 2004 LizardTech, Inc, 1008 Western Avenue,   //
// Suite 200, Seattle, WA 98104.  Unauthorized use or distribution         //
// prohibited.  Access to and use of this code is permitted only under     //
// license from LizardTech, Inc.  Portions of the code are protected by    //
// US and foreign patents and other filings. All Rights Reserved.          //
//                                                                         //
/* PUBLIC */

#ifndef LT_IO_FILE_STREAM_H
#define LT_IO_FILE_STREAM_H

#include "lt_ioStreamInf.h"
#include "lt_fileSpec.h"
#include <stdio.h>

LT_BEGIN_NAMESPACE( LizardTech )



class LTIOFileStream : public LTIOStreamInf
{
public:


   LTIOFileStream(void);

   virtual ~LTIOFileStream(void);

   virtual LT_STATUS initialize(const LTFileSpec& fs, const char* mode);
   LT_STATUS initialize(const char* path, const char* mode);

   // LTIOStreamInf overrides
   virtual bool isEOF();
   virtual bool isOpen();
   virtual LT_STATUS open();
   virtual LT_STATUS close();
   virtual lt_uint32 read(lt_uint8 *pDest, lt_uint32 numBytes);
   virtual lt_uint32 write(const lt_uint8 *pSrc, lt_uint32 numBytes);
   virtual LT_STATUS seek(lt_int64 offset, LTIOSeekDir origin);
   virtual lt_int64 tell();
   virtual LTIOStreamInf *duplicate();
   virtual LT_STATUS getLastError() const;
   virtual const char* getID() const;

   int stdio_ferror();

   void stdio_clearerr();

   int stdio_setvbuf( lt_uint8* buf, lt_uint32 mode, lt_uint32 size  );

private:

   void cleanup();

protected:
   FILE* m_file;
   
   enum
   {
      unknown_state = 1,
      reading_state = 2,
      writing_state = 3
   } m_state;

   LTFileSpec m_path;
   char *m_mode;
   char *m_uri;
};

LT_END_NAMESPACE( LizardTech )

#endif   // LT_STREAMINF_H

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