function ed_readmore_nodeapi in Read More Link (Drupal 6 and earlier) 6.5

Same name and namespace in other branches

1. 5 ed_readmore.module \ed_readmore_nodeapi()
2. 6.2 ed_readmore.module \ed_readmore_nodeapi()
3. 6.3 ed_readmore.module \ed_readmore_nodeapi()

Implementation of hook_nodeapi().

File

./ed_readmore.module, line 209

Customize the "Read More" link shown in teasers.

Code

function ed_readmore_nodeapi(&$node, $op, $teaser = NULL, $page = NULL) {
  switch ($op) {
    case 'view':
      $anchor = variable_get('ed_readmore_anchor', FALSE);
      if ($teaser) {

        /* Teaser */
        $display = variable_get('ed_readmore_placement', ED_READMORE_PLACEMENT_DEFAULT);

        // Don't do anything if placing the link is disabled.
        if ($display == 'disable' || !$node->readmore) {
          break;
        }

        // Is this an RSS feed?
        if ($node->build_mode == NODE_BUILD_RSS) {

          // If link replacement in RSS feeds is enabled, prevent core from
          // adding a second link by setting the readmore flag to NULL.
          if (variable_get('ed_readmore_rss', TRUE)) {
            $node->readmore = NULL;
          }
          else {
            break;
          }
        }

        // Try to insert the link inline.
        if ($display == 'inline') {
          $elements_array = variable_get('ed_readmore_elements', array(
            'p',
          ));
          $elements = '(?:' . implode('|', $elements_array) . ')';

          // Get last position of the last closing marker in teaser.
          if (preg_match('!</?' . $elements . '[^>]*>\\s*$!i', $node->content['body']['#value'], $match, PREG_OFFSET_CAPTURE)) {

            // Recalculate the position in $teaser. We do this because there may be extra CCK fields appended to the teaser.
            $insert_point = strpos($teaser, $node->content['body']['#value']) + $match[0][1];

            // Insert the link.
            $node->content['body']['#value'] = substr_replace($node->content['body']['#value'], ed_readmore_link_render($node, $display, $anchor), $insert_point, 0);
          }
          else {
            $display = 'after';
          }
        }

        // Append the link to the end of the teaser.
        if ($display == 'after') {
          $node->content['read_more'] = array(
            '#value' => ed_readmore_link_render($node, $display, $anchor),
            '#weight' => 10,
          );
        }
      }
      else {
        if ($anchor) {

          /* Full node and anchoring is enabled */
          $teaser_rendered = check_markup($node->teaser, $node->format, FALSE);
          $node->content['body']['#value'] = substr_replace($node->content['body']['#value'], $teaser_rendered . "\n" . '<a name="more"></a>', 0, strlen($teaser_rendered));
        }
      }
      break;
  }
}