D:/work/code_by/IOStream/InputStream.h

查看本檔案說明文件.

#ifndef _INPUTSTREAM_H_
#define _INPUTSTREAM_H_

#include <stdio.h>
class TInputStream
{
protected:
  TInputStream();       
public:
  virtual ~TInputStream();
  virtual int Available(void) = 0;      
  virtual void Close(void);             
  virtual int Position(void) = 0;       
  virtual int Read(void) = 0;           
  int Reads(void *, int);               
  virtual void Reset(void);             
  virtual int Skip(int) = 0;            
};
class TFileInputStream : public TInputStream
{
protected:
  FILE *fin;    
  unsigned char *cache; 
  int position; 
  int available;        
  int cacheSize;        
  int cacheIndex;       
  int cacheDataSize;    
public:
  TFileInputStream();   
  TFileInputStream(int);
  ~TFileInputStream();
  bool Open(char *);    
  int Available(void);
  void Close(void);
  int Position(void);
  int Read(void);
  void Reset(void);
  int Skip(int);
};
class TFilterInputStream : public TInputStream
{
protected:
  TInputStream *In;     

  TFilterInputStream(TInputStream *);
public:
  virtual ~TFilterInputStream();        
  int Available(void);
  virtual void Close(void);
  virtual int Position(void);
  virtual int Read(void);
  virtual void Reset(void);
  virtual int Skip(int);
};
class TDataInputStream : public TFilterInputStream
{
public:
  TDataInputStream(TInputStream *);     
  ~TDataInputStream();
  char ReadChar(void);          
  float ReadFloat(void);        
  double ReadDouble(void);      
  int ReadInt(void);            
  int ReadLine(char *, int);    
};
class TCipherInputStream : public TFilterInputStream
{
private:
  int index;    
protected:
  int keySize;  
  char *key;    
public:
  TCipherInputStream(TInputStream *);   
  ~TCipherInputStream();
  void SetKey(char *);          
  virtual int Read(void);
  void Reset(void);
  int Skip(int);
};

#endif

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