QFileDescriptor.hh

/*
* APOLLO: A complete DAQ and Online Data Analysis Framework for Cuore 
* $Id: QFileDescriptor.hh 631 2006-12-19 11:54:27Z giacher $
* M.P. created 16/4/4
* 
* Class QCommand: base class for all commands
*
*/

#ifndef _BASE_DESCRIPTOR_HH_
#define _BASE_DESCRIPTOR_HH_

// C/C++ Includes
#include <unistd.h>

// Apollo Includes
#include "QCuore.hh"

// Constant Definitions
#define MAX_COMMAND_LEN 512


// Used Classes
class QDescriptorList;

class QFileDescriptor 
{

public:
   
  // ctors
  QFileDescriptor() : fFds( -1 ), fNext(NULL), fBuffer(NULL) {}
  QFileDescriptor(int fds);
   
  virtual ~QFileDescriptor();
   
  inline const int FileDescriptor() const {return fFds;}
   
  virtual void HandleCommand( QDescriptorList& );
   
  void SetNext(QFileDescriptor* Next) {fNext=Next;}
  QFileDescriptor* Next() {return fNext;}
 
  virtual int Write(char* message);
  virtual int Read(char* buff, int max_ch);
  
protected:
  void SetFileDescriptor(int fds) {fFds = fds;}
  inline char* Buffer() {return fBuffer;}

private:
  int fFds;                  // file descriptor
  QFileDescriptor* fNext;     // linked list (one way)
  int   fDown;
  char* fBuffer;
  int   fNextChar;
  int   fNlOffset;
   
  int  ReadLine (void);
  void FillBuffer (void);
  void DoParse (char *);                // function to fill
};

#endif // _BASE_DESCRIPTOR_HH_

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