xbmc/platform/linux/SysfsPath.h

   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 #pragma once
  10
  11 #include "utils/log.h"
  12
  13 #include <fstream>
  14 #include <string>
  15
  16 class CSysfsPath
  17 {
  18 public:
  19   CSysfsPath() = default;
  20   CSysfsPath(const std::string& path) : m_path(path) {}
  21   ~CSysfsPath() = default;
  22
  23   bool Exists();
  24
  25   template<typename T>
  26   T Get()
  27   {
  28     std::ifstream file(m_path);
  29
  30     T value;
  31
  32     file >> value;
  33
  34     if (file.bad())
  35     {
  36       CLog::LogF(LOGERROR, "error reading from '{}'", m_path);
  37       throw std::runtime_error("error reading from " + m_path);
  38     }
  39
  40     return value;
  41   }
  42
  43 private:
  44   std::string m_path;
  45 };
  46
  47 template<>
  48 std::string CSysfsPath::Get<std::string>();