Index: database/updates.inc
===================================================================
RCS file: /cvs/drupal/drupal/database/updates.inc,v
retrieving revision 1.211
diff -u -F^f -r1.211 updates.inc
--- database/updates.inc	6 Mar 2006 14:43:11 -0000	1.211
+++ database/updates.inc	7 Mar 2006 04:41:35 -0000
@@ -1674,3 +1674,74 @@ function system_update_176() {
   $ret[] = update_sql('ALTER TABLE {filter_formats} ADD UNIQUE (name)');
   return $ret;
 }
+
+/**
+ * Update relative paths in node and comment content if case clean_urls are
+ * enabled.
+ */
+function system_update_177() {
+
+  if(variable_get('clean_url', 0) == 1) {
+
+    function _update_177_url_fix($content) {
+      $urlpattern[] = "'<a\s+href\s*=\s*([\"\'])?(?(1) (.*?)\\1 | ([^\s\>]+))'isx";
+      $urlpattern[] = "'<img\s+src\s*=\s*([\"\'])?(?(1) (.*?)\\1 | ([^\s\>]+))'isx";
+
+      foreach ($urlpattern as $pattern) {
+        $matches = '';
+        preg_match_all($pattern, $content, $matches);
+        foreach($matches[2] as $url) {
+          if ($url != '' && !strstr($url, 'mailto:') && !strstr($url, '://') && !strstr($url, '../') && !strstr($url, './') && $url[0] != '/' && $url[0] != '#') {
+            $content = str_replace($url, base_path(). $url, $content);
+          }
+        }
+      }
+
+      return $content;
+    }
+
+    // Multi-part update
+    if (!isset($_SESSION['system_update_177_comment'])) {
+      $_SESSION['system_update_177_comment'] = 0;
+      $_SESSION['system_update_177_node'] = 0;
+      $_SESSION['system_update_177_comment_max'] = db_result(db_query('SELECT MAX(cid) FROM {comments}'));
+      $_SESSION['system_update_177_node_max'] = db_result(db_query('SELECT MAX(nid) FROM {node_revisions}'));
+    }
+
+    $limit = 20;
+    $result = db_query_range("SELECT cid, comment FROM {comments} WHERE cid > %d", $_SESSION['system_update_177_comment'], 0, $limit);
+    while ($comment = db_fetch_object($result)) {
+      $_SESSION['system_update_177_comment'] = $comment->cid;
+      $comment->comment = _update_177_url_fix($comment->comment);
+      db_query("UPDATE {comments} SET comment = '%s' WHERE cid = %d", $comment->comment, $comment->cid);
+    }
+
+    $result = db_query_range("SELECT nid, vid, teaser, body FROM {node_revisions} WHERE nid > %d", $_SESSION['system_update_177_node'], 0, $limit);
+    while ($node = db_fetch_object($result)) {
+      // Catch the infinite loop for node revisions. We ignore updating
+      // content past the 20th revision.
+      if ($_SESSION['system_update_177_node'] == $node->nid) {
+        $_SESSION['system_update_177_node']++;
+      }
+      else {
+        $_SESSION['system_update_177_node'] = $node->nid;
+      }
+      $node->teaser = _update_177_url_fix($node->teaser);
+      $node->body = _update_177_url_fix($node->body);
+      db_query('UPDATE {node_revisions} SET body = "%s", teaser = "%s" WHERE nid = %d AND vid = %d', $node->body, $node->teaser, $node->nid, $node->vid);
+    }
+
+    if ($_SESSION['system_update_177_comment'] == $_SESSION['system_update_177_comment_max'] &&
+        $_SESSION['system_update_177_node'] == $_SESSION['system_update_177_node_max']) {
+      unset($_SESSION['system_update_177_comment']);
+      unset($_SESSION['system_update_177_comment_max']);
+      unset($_SESSION['system_update_177_node']);
+      unset($_SESSION['system_update_177_node_max']);
+      return array();
+    }
+    return array('#finished' => $_SESSION['system_update_177_comment'] / $_SESSION['system_update_177_comment_max']
+                                && $_SESSION['system_update_177_node'] / $_SESSION['system_update_177_node_max']);
+  }
+
+  return array();
+}