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<?php
// $Id$

/**
 * @file
 * Imagecache Auto.
 *
 * Creates imagecache presets on the fly.
 */

/**
 * Implements hook_menu();
 */
function imagecache_auto_menu() {
  $items = array();

  $items[file_directory_path() .'/imagecache_auto'] = array(
    'page callback'   => 'imagecache_auto',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK
  );

  return $items;
}

/**
 * Automatically create imagecache presets.
 *
 * @todo
 *   Check if width and heigh are integers.
 *   Specify maximum and minimum dimensions.
 */
function imagecache_auto() {
  include_once('imagecache_auto.inc');

  $args    = func_get_args();
  $options = array(
    'width'  => check_plain(array_shift($args)),
    'height' => check_plain(array_shift($args)),
    'path'   => implode('/', $args),
  );

  // Make sure that the preset exists.
  imagecache_auto_create_preset($options);

  // Redirect to the image cache image version.
  $path = file_directory_path() .'/imagecache/'. $options['width'] .'x'. $options['height'] .'/'. $options['path'];
  drupal_goto($path);
}