XrdSsiStream.hh

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#ifndef __XRDSSISTREAM_HH__
#define __XRDSSISTREAM_HH__
/******************************************************************************/
/*                                                                            */
/*                       X r d S s i S t r e a m . h h                        */
/*                                                                            */
/* (c) 2013 by the Board of Trustees of the Leland Stanford, Jr., University  */
/*   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.       */
/******************************************************************************/
 
#include <cerrno>
 
#include "XrdSsi/XrdSsiErrInfo.hh"
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
class XrdSsiStream
{
public:
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
class Buffer
{
public:
virtual void    Recycle() = 0;     
 
char           *data;              
Buffer         *next;              
 
                Buffer(char *dp=0) : data(dp), next(0) {}
virtual        ~Buffer() {}
};
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
virtual Buffer *GetBuff(XrdSsiErrInfo &eRef, int &dlen, bool &last)
                   {eRef.Set("Not an active stream", EOPNOTSUPP); return 0;}
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
virtual bool    SetBuff(XrdSsiErrInfo &eRef, char *buff, int  blen)
                   {eRef.Set("Not a passive stream", EOPNOTSUPP); return false;}
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
virtual int     SetBuff(XrdSsiErrInfo &eRef, char *buff, int blen, bool &last)
                   {eRef.Set("Not a passive stream", EOPNOTSUPP); return 0;}
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
        enum    StreamType {isActive = 0, isPassive};
 
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
 
StreamType      Type() {return SType;}
 
                XrdSsiStream(StreamType stype) : SType(stype) {}
 
virtual        ~XrdSsiStream() {}
 
protected:
 
const StreamType SType;
};
#endif