sbuffer.h

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00001 /* Static buffer class.
00002  *
00003  * PegSoft sockets library (c) 2007 PegSoft
00004  * Contact us at pegsoft@pegsoft.net
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program (see the file COPYING); if not, write to the
00018  * Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00019  */
00020 
00024 #ifndef SOCKETS_SBUFFER_H
00025 #define SOCKETS_SBUFFER_H
00026 
00027 /*************************************************************************/
00028 
00029 #include <sockets/buffer.h>
00030 
00031 /*************************************************************************/
00032 
00033 namespace sockets
00034 {
00035 
00036 /*************************************************************************/
00037 
00039 
00046 class SBuffer : public Buffer
00047 {
00048     public:
00050 
00055         explicit SBuffer(size_t maxsize);
00057         SBuffer(SBuffer const &sb);
00059         virtual ~SBuffer();
00061         SBuffer &operator=(SBuffer const &right);
00062         
00064         virtual bool read(size_t max,
00065                 char const **data, size_t *len) const;
00067         virtual bool write(char const *data, size_t len);
00069         virtual bool erase(size_t len);
00071         virtual bool clear();
00072         
00074         virtual bool empty() const { return !m_size; }
00076         virtual size_type size() const { return m_size; }
00078         virtual size_type max_size() const { return m_maxsize; }
00079     protected:
00081         virtual bool read_byte(size_type pos, char *ch) const;
00082     private:
00084         char *m_buf;
00085         
00087         char const *m_first;
00089         char *m_next;
00091         char const *m_end;
00092         
00094         size_t m_size;
00096         size_t m_maxsize;
00097 };
00098 
00099 /*************************************************************************/
00100 
00101 } /* namespace sockets */
00102 
00103 /*************************************************************************/
00104 
00105 #endif /* SOCKETS_SBUFFER_H */

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