function xmlsitemap_generate_chunk in XML sitemap 6.2

Same name and namespace in other branches

1. 7.2 xmlsitemap.generate.inc \xmlsitemap_generate_chunk()

1 call to xmlsitemap_generate_chunk()

XMLSitemapWriter::generateXML in ./xmlsitemap.xmlsitemap.inc

File

./xmlsitemap.generate.inc, line 166

Sitemap generation and rebuilding functions for the xmlsitemap module.

Code

function xmlsitemap_generate_chunk(stdClass $sitemap, XMLSitemapWriter $writer, $chunk) {
  $lastmod_format = variable_get('xmlsitemap_lastmod_format', XMLSITEMAP_LASTMOD_MEDIUM);
  $url_options = $sitemap->uri['options'];
  $url_options += array(
    'absolute' => TRUE,
    'base_url' => variable_get('xmlsitemap_base_url', $GLOBALS['base_url']),
    'language' => language_default(),
    'alias' => variable_get('xmlsitemap_prefetch_aliases', TRUE),
  );
  $last_url = '';
  $link_count = 0;
  $query = array(
    'SELECT' => 'SELECT x.loc, x.lastmod, x.changefreq, x.changecount, x.priority, x.language',
    'FROM' => 'FROM {xmlsitemap} x',
    'WHERE' => 'WHERE x.access = 1 AND x.status = 1',
    'ORDER BY' => 'ORDER BY x.language, x.loc',
  );
  $args = array();

  // Allow other modules to alter the sitemap query SQL and arguments.
  static $alter;
  if (!isset($alter)) {

    // Skip altering if there are no modules to invoke.
    xmlsitemap_load_all_includes();
    $alter = (bool) module_implements('query_xmlsitemap_generate_alter');
  }
  if ($alter) {
    $data =& $query;
    $data['__drupal_alter_by_ref'] = array(
      &$args,
    );
    drupal_alter('query_xmlsitemap_generate', $data, $sitemap);
  }
  $sql = implode($query, ' ');
  $offset = max($chunk - 1, 0) * xmlsitemap_get_chunk_size();
  $limit = xmlsitemap_get_chunk_size();
  $query = db_query_range($sql, $args, $offset, $limit);
  while ($link = db_fetch_array($query)) {
    $link['language'] = $link['language'] ? xmlsitemap_language_load($link['language']) : $url_options['language'];
    if ($url_options['alias']) {
      $link['loc'] = xmlsitemap_get_path_alias($link['loc'], $link['language']->language);
    }
    $link_options = array(
      'language' => $link['language'],
      'xmlsitemap_link' => $link,
      'xmlsitemap_sitemap' => $sitemap,
    );

    // @todo Add a separate hook_xmlsitemap_link_url_alter() here?
    $link_url = url($link['loc'], $link_options + $url_options);

    // Skip this link if it was a duplicate of the last one.
    // @todo Figure out a way to do this before generation so we can report
    // back to the user about this.
    if ($link_url == $last_url) {
      continue;
    }
    else {
      $last_url = $link_url;

      // Keep track of the total number of links written.
      $link_count++;
    }
    $element = array();
    $element['loc'] = $link_url;
    if ($link['lastmod']) {
      $element['lastmod'] = gmdate($lastmod_format, $link['lastmod']);

      // If the link has a lastmod value, update the changefreq so that links
      // with a short changefreq but updated two years ago show decay.
      // We use abs() here just incase items were created on this same cron run
      // because lastmod would be greater than REQUEST_TIME.
      $link['changefreq'] = (abs(REQUEST_TIME - $link['lastmod']) + $link['changefreq']) / 2;
    }
    if ($link['changefreq']) {
      $element['changefreq'] = xmlsitemap_get_changefreq($link['changefreq']);
    }
    if (isset($link['priority']) && $link['priority'] != 0.5) {

      // Don't output the priority value for links that have 0.5 priority. This
      // is the default 'assumed' value if priority is not included as per the
      // sitemaps.org specification.
      $element['priority'] = number_format($link['priority'], 1);
    }
    $writer
      ->writeSitemapElement('url', $element);
  }
  return $link_count;
}