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   1  <?php
   2  
   3  namespace dokuwiki\Action;
   4  
   5  use dokuwiki\Action\Exception\ActionAbort;
   6  use dokuwiki\Extension\Event;
   7  
   8  /**
   9   * Class Redirect
  10   *
  11   * Used to redirect to the current page with the last edited section as a target if found
  12   *
  13   * @package dokuwiki\Action
  14   */
  15  class Redirect extends AbstractAliasAction {
  16  
  17      /**
  18       * Redirect to the show action, trying to jump to the previously edited section
  19       *
  20       * @triggers ACTION_SHOW_REDIRECT
  21       * @throws ActionAbort
  22       */
  23      public function preProcess() {
  24          global $PRE;
  25          global $TEXT;
  26          global $INPUT;
  27          global $ID;
  28          global $ACT;
  29  
  30          $opts = array(
  31              'id' => $ID,
  32              'preact' => $ACT
  33          );
  34          //get section name when coming from section edit
  35          if($INPUT->has('hid')) {
  36              // Use explicitly transmitted header id
  37              $opts['fragment'] = $INPUT->str('hid');
  38          } else if($PRE && preg_match('/^\s*==+([^=\n]+)/', $TEXT, $match)) {
  39              // Fallback to old mechanism
  40              $check = false; //Byref
  41              $opts['fragment'] = sectionID($match[0], $check);
  42          }
  43  
  44          // execute the redirect
  45          Event::createAndTrigger('ACTION_SHOW_REDIRECT', $opts, array($this, 'redirect'));
  46  
  47          // should never be reached
  48          throw new ActionAbort('show');
  49      }
  50  
  51      /**
  52       * Execute the redirect
  53       *
  54       * Default action for ACTION_SHOW_REDIRECT
  55       *
  56       * @param array $opts id and fragment for the redirect and the preact
  57       */
  58      public function redirect($opts) {
  59          $go = wl($opts['id'], '', true, '&');
  60          if(isset($opts['fragment'])) $go .= '#' . $opts['fragment'];
  61  
  62          //show it
  63          send_redirect($go);
  64      }
  65  }