<?php
class ZipFileManager extends sfValidatedFile
{
  /**
   * 1. save the zip file in $file.
   * 2. unzip $file in a new directory named as $file but whitout extension.
   * 3. delete the zip $file.
   * 4. return newly created directory.
   * @return string path to zip content
   * @author Carlos
   */
  public function save($file = null, $fileMode = 0666, $create = true, $dirMode = 0777)
  {
    if (is_null($file))
    {
      $file = sys_get_temp_dir().$this->generateFilename();
    }
    
    if (!is_writable(sys_get_temp_dir()))
    {
      throw new sfException("Temporal directory is not writable.");
    }
    
    $zPath = parent::save($file, $fileMode, $create, $dirMode);
    $zDir  = ($this->path ? $this->path : dirname($zPath)).DIRECTORY_SEPARATOR; // directory
    $zFile = basename($zPath); // filename
    $xPath = $zDir.str_replace($this->getExtension(), '', $zFile).DIRECTORY_SEPARATOR;
    
    try
    {
      $zip = new ZipArchive();
      $res = $zip->open($zPath);
      $zip->extractTo($xPath);
      $zip->close();

      @ unlink($zPath);
      return $xPath;
    }
    catch (Exception $e)
    {
      @ unlink($zPath);
      throw new sfException("I can't open the zip file in ".$zPath);
    }
  }
}