source: plugins/dcRevisions/_services.php @ 721:e48539cccdbd

<?php
# -- BEGIN LICENSE BLOCK ----------------------------------
# This file is part of dcRevisions, a plugin for Dotclear.
#
# Copyright (c) 2011 Tomtom and contributors
# http://blog.zenstyle.fr/
#
# Licensed under the GPL version 2.0 license.
# A copy of this license is available in LICENSE file or at
# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# -- END LICENSE BLOCK ------------------------------------

class dcRevisionsRestMethods
{
     public static function getPatch()
     {
          global $core;
          
          $pid = isset($_GET['pid']) ? $_GET['pid'] : null;
          $rid = isset($_GET['rid']) ? $_GET['rid'] : null;
          
          if ($pid === null) {
               throw new Exception(__('No post ID'));
          }
          if ($rid === null) {
               throw new Exception(__('No revision ID'));
          }
          
          $p = $core->blog->getPosts(array('post_id' => $pid));
          $o = array(
               'post_excerpt_xhtml' => $p->post_excerpt_xhtml,
               'post_content_xhtml' => $p->post_content_xhtml
          );
          
          $n = $core->blog->revisions->getPatch($pid,$rid);
          unset($n['post_excerpt']);
          unset($n['post_content']);
          
          $rsp = new xmlTag();
          
          foreach ($o as $k => $v) {
               $rsp->insertNode(self::buildNode($v,$n[$k],2,$k));
          }
          
          return $rsp;
     }
     
     public static function buildNode($src,$dst,$ctx,$root)
     {
          $udiff = diff::uniDiff($src,$dst,$ctx);
          $tdiff = new tidyDiff(htmlspecialchars($udiff),true);
          
          $rev = new xmlTag($root);
          
          foreach ($tdiff->getChunks() as $k => $chunk) {
               foreach ($chunk->getLines() as $line) {
                    switch ($line->type) {
                         case 'context':
                              $node = new xmlTag('context');
                              $node->oline = $line->lines[0];
                              $node->nline = $line->lines[1];
                              $node->insertNode($line->content);
                              $rev->insertNode($node);
                              break;
                         case 'delete':
                              $node = new xmlTag('delete');
                              $node->oline = $line->lines[0];
                              $c = str_replace(array('\0','\1'),array('<del>','</del>'),$line->content);
                              $node->insertNode($c);
                              $rev->insertNode($node);
                              break;
                         case 'insert':
                              $node = new xmlTag('insert');
                              $node->nline = $line->lines[1];
                              $c = str_replace(array('\0','\1'),array('<ins>','</ins>'),$line->content);
                              $node->insertNode($c);
                              $rev->insertNode($node);
                              break;
                    }
               }
               if ($k < count($tdiff->getChunks()) - 1) {
                    $node = new xmlTag('skip');
                    $rev->insertNode($node);
               }
          }
          return $rev;
     }
}

?>