notify.hpp

Go to the documentation of this file.

 
#pragma once
 
#include <cstdint>
#include <filesystem>
 
#include "../std/expected.hpp"
#include "../macro.hpp"
#include "reserved.hpp"

namespace ns_reserved::ns_notify
{
 
namespace
{
 
namespace fs = std::filesystem;
 
}

inline Value<void> write(fs::path const& path_file_binary, uint8_t is_notify)
{
  uint64_t offset_begin = ns_reserved::FIM_RESERVED_OFFSET_NOTIFY_BEGIN;
  uint64_t offset_end = ns_reserved::FIM_RESERVED_OFFSET_NOTIFY_END;
  uint64_t size = offset_end - offset_begin;
  return_if(size != sizeof(uint8_t), Error("E::Incorrect number of bytes to write notification flag: {} vs {}", size, sizeof(uint8_t)));
  return ns_reserved::write(path_file_binary, offset_begin, offset_end, reinterpret_cast<char*>(&is_notify), sizeof(uint8_t));
}

inline Value<uint8_t> read(fs::path const& path_file_binary)
{
  uint64_t offset_begin = ns_reserved::FIM_RESERVED_OFFSET_NOTIFY_BEGIN;
  uint8_t is_notify;
  ssize_t bytes = Pop(ns_reserved::read(path_file_binary, offset_begin, reinterpret_cast<char*>(&is_notify), sizeof(uint8_t)));
  log_if(bytes != 1, "E::Possible error to read notify byte, count is {}", bytes);
  return is_notify;
}
 
} // namespace ns_reserved::ns_notify
 
/* vim: set expandtab fdm=marker ts=2 sw=2 tw=100 et :*/