git.sesse.net Git - casparcg/blob - common/software_version.h

   1 /*
   2 * Copyright 2013 Sveriges Television AB http://casparcg.com/
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Helge Norberg, helge.norberg@svt.se
  20 */
  21
  22 #pragma once
  23
  24 #include <string>
  25 #include <vector>
  26
  27 #include <boost/array.hpp>
  28 #include <boost/algorithm/string/split.hpp>
  29
  30 namespace caspar {
  31
  32 template<size_t NUM>
  33 class software_version
  34 {
  35         boost::array<int, NUM> numbers_;
  36         std::string version_;
  37 public:
  38         software_version(std::string version)
  39                 : version_(std::move(version))
  40         {
  41                 std::fill(numbers_.begin(), numbers_.end(), 0);
  42                 std::vector<std::string> tokens;
  43                 boost::split(tokens, version_, boost::is_any_of("."));
  44                 auto num = std::min(NUM, tokens.size());
  45
  46                 for (size_t i = 0; i < num; ++i)
  47                 {
  48                         try
  49                         {
  50                                 numbers_[i] = boost::lexical_cast<int>(tokens[i]);
  51                         }
  52                         catch (const boost::bad_lexical_cast&)
  53                         {
  54                                 return;
  55                         }
  56                 }
  57         };
  58
  59         const std::string& to_string() const
  60         {
  61                 return version_;
  62         }
  63
  64         bool operator<(const software_version<NUM>& other) const
  65         {
  66                 for (int i = 0; i < NUM; ++i)
  67                 {
  68                         int this_num = numbers_[i];
  69                         int other_num = other.numbers_[i];
  70
  71                         if (this_num < other_num)
  72                                 return true;
  73                         else if (this_num > other_num)
  74                                 return false;
  75                 }
  76
  77                 return false;
  78         }
  79 };
  80
  81 }