sprint/io/xstream/xstream.h

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/******************************************************************************
*   sprint::xstream
*
*   Copyright (C) 2005-2011  Paolo Medici <www.pmx.it>
*
*  This library 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 2.1 of the License, or (at your option) any later version.
*
*  This library 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 this library; if not, write to the Free Software
*  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*
*******************************************************************************/

#ifndef _XSTREAM_H
#define _XSTREAM_H

#include <sprint/io/type.h>
#include <string>

namespace sprint {
          
  namespace io {
    
        class xstream {
        public:
                virtual ~xstream();
                virtual int write(const char *buf, unsigned int size) = 0;
                virtual int read(char *buf, unsigned int size) = 0;
                virtual file_size_t seek(file_size_t offset, seek_t type) = 0;
                virtual file_size_t length() = 0;
                virtual state_t state() = 0;

                inline operator bool () { return state()==sprint::io::good; }
                
                inline bool good() { return state()==sprint::io::good; }
                inline bool eof() { return state()==sprint::io::eof; }          
                
                inline int get() { char c; return (read(&c, 1)==1) ? (c) : (sprint::io::eof); }

                inline int put(char c) { return write(&c, 1); }

        };

  }
  
}

#endif