XrdCksCalc.hh

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#ifndef __XRDCKSCALC_HH__
#define __XRDCKSCALC_HH__
/******************************************************************************/
/*                                                                            */
/*                         X r d C k s C a l c . h h                          */
/*                                                                            */
/* (c) 2011 by the Board of Trustees of the Leland Stanford, Jr., University  */
/*                            All Rights Reserved                             */
/*   Produced by Andrew Hanushevsky for Stanford University under contract    */
/*              DE-AC02-76-SFO0515 with the Department of Energy              */
/*                                                                            */
/* This file is part of the XRootD software suite.                            */
/*                                                                            */
/* XRootD is free software: you can redistribute it and/or modify it under    */
/* the terms of the GNU Lesser General Public License as published by the     */
/* Free Software Foundation, either version 3 of the License, or (at your     */
/* option) any later version.                                                 */
/*                                                                            */
/* XRootD is distributed in the hope that it will be useful, but WITHOUT      */
/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or      */
/* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public       */
/* License for more details.                                                  */
/*                                                                            */
/* You should have received a copy of the GNU Lesser General Public License   */
/* along with XRootD in a file called COPYING.LESSER (LGPL license) and file  */
/* COPYING (GPL license).  If not, see <http://www.gnu.org/licenses/>.        */
/*                                                                            */
/* The copyright holder's institutional names and contributor's names may not */
/* be used to endorse or promote products derived from this software without  */
/* specific prior written permission of the institution or contributor.       */
/******************************************************************************/
 
class XrdCksCalc
{
public:
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual char *Calc(const char *Buff, int BLen)
                  {Init(); Update(Buff, BLen); return Final();}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual bool Combinable() {return false;}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual
const char* Combine(const char *Cksum, int DLen) {return 0;};
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual
const char* Combine(const char* Cksum1, const char* Cksum2, int DLen)
                   {return 0;};
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual char *Current() {return Final();}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual char *Final() = 0;
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual void  Init() = 0;
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
virtual
XrdCksCalc   *New() = 0;
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual void  Recycle() {delete this;}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual const char *Type(int &csSize) = 0;
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual void  Update(const char *Buff, int BLen) = 0;
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
              XrdCksCalc() {}
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
virtual      ~XrdCksCalc() {}
};
 
/******************************************************************************/
/*               C h e c k s u m   O b j e c t   C r e a t o r                */
/******************************************************************************/
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
 
#endif