Static/PhpInclude/FareOfficeLib/General/FileLock.class.php

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<?php
  require_once('ILock.php');

class FileLock implements ILock
{
  function FileLock($lockPath_)
  {
    $this->setLockPath($lockPath_);
  }

  public function setLockPath($lockPath_)
  {
    $this->_lockPath = rtrim($lockPath_, '/') . '/';

    if (!file_exists($this->_lockPath))
    {
      if (!@mkdir($this->_lockPath, 0755, true))
      {
        // @todo add assertlog
        //assertLog(false, EL_LEVEL_3, ECAT_DIAGNOSTIC, 'Couldnt create lockPath: ' . $this->_lockPath);

        echo('Couldnt create path');
        exit;
      }
    }
  }

  public function getLockPath()
  {
    // @todo add assertlog
    //assertLog(!empty($this->_lockPath), EL_LEVEL_3, ECAT_DIAGNOSTIC, 'Couldnt create lockPath: ' . $this->_lockPath);
    return $this->_lockPath;
  }

  public function deleteAllLocks()
  {
    $path = $this->getLockPath();

    if
    (
      !empty($path) &&
      $path != '/'
    )
    {
      exec('rm ' . $path . '*.lock', $arr, $retval);
      return true;
    }
    else
    {
      return false;
    }
  }

  public function isLockExpired
  (
    $lockName_,
    $lockTime_ = 60,
    $compressName_ = true
  )
  {
    $fileName = $this->_getFileName($lockName_, $compressName_);

    $retVal = false;
    if
    (
      !file_exists($fileName) ||
      filemtime($fileName) < (time() - $lockTime_)
    )
    {
      $handle = @fopen($fileName, 'w');

      if ($handle !== false)
      {
        fwrite($handle, $lockName_);
        $retVal = true;
        fclose($handle);
      }
    }

    return $retVal;
  }

  private function _getFileName($lockName_, $compressName_)
  {
    if ($compressName_)
    {
      $lockName_ = md5($lockName_);
    }

    $fileName = $this->getLockPath() . md5($lockName_) . '.lock';

    return $fileName;
  }

  private $_lockPath;
}

?>

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