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

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006 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 2, 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 COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
  20
  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
  24 // file, or you compile this file and link it with other files to
  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  32
  33 // Permission to use, copy, modify, sell, and distribute this software
  34 // is hereby granted without fee, provided that the above copyright
  35 // notice appears in all copies, and that both that copyright notice
  36 // and this permission notice appear in supporting documentation. None
  37 // of the above authors, nor IBM Haifa Research Laboratories, make any
  38 // representation about the suitability of this software for any
  39 // purpose. It is provided "as is" without express or implied
  40 // warranty.
  41
  42 /**
  43  * @file prog_bar.cpp
  44  * Contains a progress bar - idea taken from boost::timer by Beman Dawes.
  45  */
  46
  47 #include <util/io/prog_bar.hpp>
  48
  49 namespace __gnu_pbds
  50 {
  51
  52   namespace test
  53   {
  54
  55     prog_bar::
  56     prog_bar(size_t max, std::ostream& r_os, bool display/*= true*/) :
  57       m_cur(0),
  58       m_max(max),
  59       m_cur_disp(0),
  60       m_r_os(r_os),
  61       m_display(display)
  62     {
  63       if (m_display == false)
  64         return;
  65
  66       for (std::size_t i = 0; i < num_disp; ++i)
  67         m_r_os << "-";
  68
  69       m_r_os << std::endl;
  70     }
  71
  72     void
  73     prog_bar::
  74     inc()
  75     {
  76       ++m_cur;
  77
  78       if (m_display == false)
  79         return;
  80
  81       while (m_cur*  num_disp >= m_max*  m_cur_disp&&  m_cur_disp < num_disp)
  82         {
  83           m_r_os << '*';
  84           m_r_os.flush();
  85
  86           ++m_cur_disp;
  87         }
  88     }
  89
  90   } // namespace test
  91
  92 } // namespace __gnu_pbds