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IInputStream.h

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/*
 * Interface class for input stream
 *
 * Zhe Wang  
 * Feb. 11, 2010
 *
 */

#ifndef _I_INPUT_STREAM_H_
#define _I_INPUT_STREAM_H_

class IInputStream
{
 public:
  IInputStream() {};
  IInputStream(const char * /*filename*/) {};
  virtual ~IInputStream() {};

  virtual void close() = 0;
  virtual void open(const char * filename) = 0;
  virtual bool is_open() const = 0;
  virtual bool good() const = 0;

  virtual bool operator ! ( ) const =0;

  virtual IInputStream& read ( char* s, int n ) =0;
  virtual IInputStream& ignore ( int n = 1 ) =0;
 
};

#endif // _INPUT_STREAM_H_


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