src/windows/File.cpp (9eeb24a) - Blinker · BlinkenArea

File.cpp

/* Blinker
   Copyright 2011-2019 Stefan Schuermans <stefan@blinkenarea.org>
   Copyleft GNU public license - http://www.gnu.org/copyleft/gpl.html
   a blinkenarea.org project */

#include <string>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include "File.h"
#include "Time.h"

namespace Blinker {

/**
 * @brief constructor from path
 * @param[in] path path to file
 */
File::File(const std::string &path):
  m_path(path)
{
  // get modification time
  checkModified();
}

/**
 * @brief get path to file
 * @return path to file
 */
const std::string & File::getPath() const
{
  return m_path;
}

/**
 * @brief check if file exists
 * @return whether file exists
 */
bool File::exists() const
{
  struct stat s;
  if (stat(m_path.c_str(), &s)) {
    return false; // stat failed -> no such file
  }
  return true; // stat worked -> file exists
}

/**
 * @brief check if file has been modified
 * @return if file has been modified since last check
 */
bool File::checkModified()
{
  // get modification/change times
  struct stat s;
  if (stat(m_path.c_str(), &s))
    return false; // cannot stat -> silently ignore
  Time modifyTime(s.st_mtime);
  // s.st_ctime not valid for FAT filesystems, so do not use it

// consider file modified if modify time changed since last check
  bool mod = modifyTime > m_lastModifyTime;

// remember new modify time
  m_lastModifyTime = modifyTime;

return mod;
}

} // namespace Blinker

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