00001 /* 00002 CLAW - a C++ Library Absolutely Wonderful 00003 00004 CLAW is a free library without any particular aim but being useful to 00005 anyone. 00006 00007 Copyright (C) 2005-2008 Julien Jorge 00008 00009 This library is free software; you can redistribute it and/or 00010 modify it under the terms of the GNU Lesser General Public 00011 License as published by the Free Software Foundation; either 00012 version 2.1 of the License, or (at your option) any later version. 00013 00014 This library is distributed in the hope that it will be useful, 00015 but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 Lesser General Public License for more details. 00018 00019 You should have received a copy of the GNU Lesser General Public 00020 License along with this library; if not, write to the Free Software 00021 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00022 00023 contact: julien_jorge@yahoo.fr 00024 */ 00030 #ifndef __CLAW_BUFFERED_ISTREAM_HPP__ 00031 #define __CLAW_BUFFERED_ISTREAM_HPP__ 00032 00033 #include<iostream> 00034 00035 namespace claw 00036 { 00041 template< typename Stream > 00042 class buffered_istream 00043 { 00044 private: 00046 typedef Stream stream_type; 00047 00048 public: 00049 buffered_istream( stream_type& f ); 00050 ~buffered_istream(); 00051 00052 unsigned int remaining() const; 00053 bool read_more( unsigned int n ); 00054 00055 const char* get_buffer() const; 00056 char get_next(); 00057 bool read( char* buf, unsigned int n ); 00058 00059 void move( unsigned int n ); 00060 00061 void close(); 00062 00063 operator bool() const; 00064 00065 private: 00067 stream_type& m_stream; 00068 00070 char* m_begin; 00071 00074 char* m_end; 00075 00077 char* m_current; 00078 00080 unsigned int m_buffer_size; 00081 00082 }; // class buffered_istream 00083 } // namespace claw 00084 00085 #include <claw/impl/buffered_istream.tpp> 00086 00087 #endif // __CLAW_BUFFERED_ISTREAM_HPP__