xbmc/platform/linux/SysfsPath.cpp

   1 /*
   2  *  Copyright (C) 2011-2018 Team Kodi
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #include "SysfsPath.h"
  10
  11 #include <exception>
  12
  13 bool CSysfsPath::Exists()
  14 {
  15   std::ifstream file(m_path);
  16
  17   if (!file.is_open())
  18     return false;
  19
  20   return true;
  21 }
  22
  23 template<>
  24 std::optional<std::string> CSysfsPath::Get()
  25 {
  26   try
  27   {
  28     std::ifstream file(m_path);
  29
  30     std::string value;
  31
  32     std::getline(file, value);
  33
  34     if (file.bad())
  35     {
  36       CLog::LogF(LOGERROR, "error reading from '{}'", m_path);
  37       return std::nullopt;
  38     }
  39
  40     return value;
  41   }
  42   catch (const std::exception& e)
  43   {
  44     CLog::LogF(LOGERROR, "exception reading from '{}': {}", m_path, e.what());
  45     return std::nullopt;
  46   }
  47 }