00001 // Copyright (C) 2004 EPITA Research and Development Laboratory 00002 // 00003 // This file is part of the Olena Library. This library is free 00004 // software; you can redistribute it and/or modify it under the terms 00005 // of the GNU General Public License version 2 as published by the 00006 // Free Software Foundation. 00007 // 00008 // This library is distributed in the hope that it will be useful, 00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00011 // General Public License for more details. 00012 // 00013 // You should have received a copy of the GNU General Public License 00014 // along with this library; see the file COPYING. If not, write to 00015 // the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 00016 // Boston, MA 02110-1301, USA. 00017 // 00018 // As a special exception, you may use this file as part of a free 00019 // software library without restriction. Specifically, if other files 00020 // instantiate templates or use macros or inline functions from this 00021 // file, or you compile this file and link it with other files to 00022 // produce an executable, this file does not by itself cause the 00023 // resulting executable to be covered by the GNU General Public 00024 // License. This exception does not however invalidate any other 00025 // reasons why the executable file might be covered by the GNU General 00026 // Public License. 00027 00028 00029 #ifndef OLENA_OLN_UTILS_BUFFER_HH 00030 # define OLENA_OLN_UTILS_BUFFER_HH 00031 00032 # include <ntg/int.hh> 00033 # include <vector> 00034 00035 namespace oln { 00036 namespace utils { 00040 class buffer 00041 { 00042 public: 00043 typedef ntg::int_u32 value_type; 00044 00048 buffer(); 00049 00056 template <class E> 00057 void add(const E &e, bool count = true); 00058 00068 void push_back(bool bit, bool is_padding = false); 00069 00073 ntg::int_u32 operator[] (unsigned n) const; 00074 00078 void append_padding(); 00079 00083 void append_length(); 00084 00088 unsigned size() const; 00089 00093 unsigned bit_len() const; 00094 00098 bool is_append_padding() const; 00099 00103 bool is_append_length() const; 00104 00105 protected: 00111 value_type reorder(value_type x) const; 00112 00113 static const unsigned length_ = 100; 00114 00115 unsigned char current_bit_; 00116 std::vector<value_type> data_; 00117 value_type len1_; 00118 value_type len2_; 00119 bool padding_appended_; 00120 bool length_appended_; 00121 }; 00122 00123 # include <oln/utils/buffer.hxx> 00124 00125 } // !utils 00126 } // !oln 00127 #endif // !OLENA_OLN_UTILS_BUFFER_HH