function _linkchecker_check_markup in Link checker 6.2

Same name and namespace in other branches

1. 5.2 linkchecker.module \_linkchecker_check_markup()
2. 7 linkchecker.module \_linkchecker_check_markup()

Customized clone of core check_markup() function with additional filter blacklist.

See http://api.drupal.org/api/function/check_markup for API documentation.

3 calls to _linkchecker_check_markup()

_linkchecker_add_box_links in ./linkchecker.module

Add block links to database.

_linkchecker_add_comment_links in ./linkchecker.module

Add comment links to database.

_linkchecker_extract_node_links in ./linkchecker.module

Extracts links from a node.

File

./linkchecker.module, line 1676

This module periodically check links in given node types, blocks, cck fields, etc.

Code

function _linkchecker_check_markup($text, $format = FILTER_FORMAT_DEFAULT, $check = TRUE) {

  // When $check = TRUE, do an access check on $format.
  if (isset($text) && (!$check || filter_access($format))) {
    $format = filter_resolve_format($format);

    // Check for a cached version of this piece of text.
    $cache_id = 'linkchecker:' . $format . ':' . md5($text);
    if ($cached = cache_get($cache_id, 'cache_filter')) {
      return $cached->data;
    }

    // See if caching is allowed for this format.
    $cache = filter_format_allowcache($format);

    // Convert all Windows and Mac newlines to a single newline,
    // so filters only need to deal with one possibility.
    $text = str_replace(array(
      "\r\n",
      "\r",
    ), "\n", $text);

    // Get a complete list of filters, ordered properly.
    $filters = filter_list_format($format);

    // Do not run placeholder or special tag filters used as references
    // to nodes like 'weblink' or 'weblinks' node types. If the original
    // link node is updated, all links are automatically up-to-date and
    // there is no need to notify about the broken link on all nodes having
    // a link reference in content. This would only confuse the authors as
    // they may also not be able to fix the source node of the reference.
    $filters_blacklist = array_keys(array_filter(variable_get('linkchecker_filter_blacklist', explode('|', LINKCHECKER_DEFAULT_FILTER_BLACKLIST))));

    // Give filters the chance to escape HTML-like data such as code or formulas.
    foreach ($filters as $filter) {
      if (!in_array($filter->module . '/' . $filter->delta, $filters_blacklist)) {
        $text = module_invoke($filter->module, 'filter', 'prepare', $filter->delta, $format, $text, $cache_id);
      }
    }

    // Perform filtering.
    foreach ($filters as $filter) {
      if (!in_array($filter->module . '/' . $filter->delta, $filters_blacklist)) {
        $text = module_invoke($filter->module, 'filter', 'process', $filter->delta, $format, $text, $cache_id);
      }
    }

    // Store in cache with a minimum expiration time of 1 day.
    if ($cache) {
      cache_set($cache_id, $text, 'cache_filter', time() + 60 * 60 * 24);
    }
  }
  else {
    $text = t('n/a');
  }
  return $text;
}