<?php
require_once 'MTrack/Changeset.php';

abstract class MTrackSCMWorkingCopy {
  public $dir;

  /** returns the root dir of the working copy */
  function getDir() {
    return $this->dir;
  }

  /** add a file to the working copy */
  abstract function addFile($path);
  /** removes a file from the working copy */
  abstract function delFile($path);
  /** commit changes that are pending in the working copy */
  abstract function commit(MTrackChangeset $CS);
  /** get an MTrackSCMFile representation of a file */
  abstract function getFile($path);

  /** enumerates files in a path in the working copy */
  function enumFiles($path)
  {
    return scandir($this->dir . DIRECTORY_SEPARATOR . $path);
  }

  /** determines if a file exists in the working copy */
  function file_exists($path)
  {
    return file_exists($this->dir . DIRECTORY_SEPARATOR . $path);
  }

  function __destruct()
  {
    if (strlen($this->dir) > 1) {
      mtrack_rmdir($this->dir);
    }
  }
}