src/Utils/I18NHelper.h

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2020 - TortoiseGit
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #pragma once
  20
  21 class CI18NHelper
  22 {
  23 private:
  24         CI18NHelper() = delete;
  25
  26         static std::wstring AdjustVersion(const std::wstring& sVer)
  27         {
  28                 if (std::count(sVer.cbegin(), sVer.cend(), L'.') != 3)
  29                         return {};
  30
  31                 if (auto lastDot = sVer.find_last_of(L'.');  lastDot >= wcslen(L"1.2.3")) // strip last entry; MSI also ignores the build number
  32                         return sVer.substr(0, lastDot + 1);
  33
  34                 return {};
  35         }
  36
  37 public:
  38         static bool DoVersionStringsMatch(const std::wstring& sVer1, const std::wstring& sVer2)
  39         {
  40                 auto sAdjustedVer1 = AdjustVersion(sVer1);
  41                 auto sAdjustedVer2 = AdjustVersion(sVer2);
  42
  43                 if (sAdjustedVer1.empty() || sAdjustedVer2.empty())
  44                         return false;
  45
  46                 return AdjustVersion(sVer1) == AdjustVersion(sVer2);
  47         }
  48 };