libstdc++-v3/testsuite/util/io/prog_bar.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2023 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 3, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20
  21 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  22
  23 // Permission to use, copy, modify, sell, and distribute this software
  24 // is hereby granted without fee, provided that the above copyright
  25 // notice appears in all copies, and that both that copyright notice
  26 // and this permission notice appear in supporting documentation. None
  27 // of the above authors, nor IBM Haifa Research Laboratories, make any
  28 // representation about the suitability of this software for any
  29 // purpose. It is provided "as is" without express or implied
  30 // warranty.
  31
  32 /**
  33  * @file prog_bar.hpp
  34  * Contains a progress bar - idea taken from boost::timer by Beman Dawes.
  35  */
  36
  37 #ifndef PB_DS_PROG_BAR_HPP
  38 #define PB_DS_PROG_BAR_HPP
  39
  40 #include <limits.h>
  41 #include <iostream>
  42 #include <string>
  43
  44 namespace __gnu_pbds
  45 {
  46
  47   namespace test
  48   {
  49
  50     /**
  51      * Progress bar.
  52      * Simplified from part of boost::timer by Beman Dawes.
  53      **/
  54     class prog_bar
  55     {
  56     protected:
  57       enum{num_disp = 40};
  58
  59     public:
  60       prog_bar(std::size_t max, std::ostream& r_os, bool display = true);
  61
  62       void
  63       inc();
  64
  65     private:
  66       prog_bar(const prog_bar& );
  67
  68       prog_bar&
  69       operator=(const prog_bar& );
  70
  71     private:
  72       std::size_t m_cur;
  73       const std::size_t m_max;
  74
  75       std::size_t m_cur_disp;
  76
  77       std::ostream& m_r_os;
  78
  79       bool m_display;
  80     };
  81
  82   } // namespace test
  83
  84 } // namespace __gnu_pbds
  85
  86 #endif // #ifndef PB_DS_PROG_BAR_HPP