yandex_turbo.pages.inc in Yandex.Turbo 7.3

File

yandex_turbo.pages.inc

<?php

/**
 * Page callback: Generates an Yandex Turbo RSS
 *
 * @return string
 *   An XML formatted string.
 */
function yandex_turbo_page_rss() {
  $feeds = array();
  $settings = variable_get('yandex_turbo_node_types');
  $node_types = !empty($settings) ? array_keys(array_filter($settings)) : array();
  $orderBy = variable_get('yandex_turbo_order_by', 'created');
  $order = variable_get('yandex_turbo_order', 'DESC');
  $source = variable_get('yandex_turbo_body', 'value');
  if ($node_types) {
    $query = db_select('node', 'n')
      ->fields('n', array(
      'nid',
      'title',
      'created',
    ))
      ->condition('status', NODE_PUBLISHED)
      ->condition('type', $node_types, 'IN');
    $query
      ->leftJoin('field_data_body', 'd', '(d.entity_id = n.nid AND d.entity_type = :node)', array(
      ':node' => 'node',
    ));
    $query
      ->addField('d', 'body_' . $source, 'body');
    $query
      ->leftjoin('url_alias', 'ua', 'ua.source = CONCAT(:str, n.nid)', array(
      ':str' => 'node/',
    ));
    $query
      ->fields('ua', array(
      'alias',
    ));
    if ('Yes' == variable_get('yandex_turbo_sticky', 'No')) {
      $query
        ->orderBy('n.sticky', 'DESC');
    }
    if ('Yes' == variable_get('yandex_turbo_promoted', 'No')) {
      $query
        ->orderBy('n.promote', 'DESC');
    }
    $query
      ->orderBy('n.' . $orderBy, $order)
      ->range(0, 1000);
    $query
      ->where('d.body_' . $source . ' != :empty', array(
      ':empty' => '',
    ));
    $feeds = $query
      ->execute()
      ->fetchAllAssoc('nid', PDO::FETCH_ASSOC);
  }
  return theme('yandex_turbo_page_rss', array(
    'feeds' => $feeds,
  ));
}

/**
 * Prints the RSS page for a feed.
 *
 * @param $variables
 *   An associative array containing:
 *   - feeds: An array of the feeds to theme.
 *
 * @return string
 *
 * @ingroup themeable
 */
function theme_yandex_turbo_page_rss($variables) {

  /**
   * Feed absolute link
   */
  $rss_link = url('yandex.turbo.rss', array(
    'absolute' => TRUE,
  ));

  /**
   * Feeds data
   *
   * @var array
   */
  $feeds = $variables['feeds'];

  /**
   * Allowed HTMl tags
   * @see https://yandex.ru/support/webmaster/turbo/feed.html#rss-elements__item
   */
  $allowed_tags = array(
    'figure',
    'h1',
    'h2',
    'p',
    'br',
    'ul',
    'ol',
    'li',
    'b',
    'strong',
    'i',
    'em',
    'sup',
    'sub',
    'ins',
    'del',
    'small',
    'big',
    'pre',
    'abbr',
    'u',
    'a',
    'img',
    'figcaption',
    'video',
    'header',
  );

  /**
   * Removes CDATA tag from content
   *
   * @var string
   */
  $CDATA = '/^\\s*\\/\\/<!\\[CDATA\\[([\\s\\S]*)\\/\\/\\]\\]>\\s*\\z/';

  /**
   * Items XML-string
   *
   * @var string
   */
  $items = '';

  /**
   * @vat string
   */
  $output = '';

  /**
   * Channel settings
   */
  $site_name = variable_get('site_name', '');
  $site_slogan = variable_get('site_slogan', 'Site description');
  $channel_title = variable_get('yandex_turbo_rss_title', $site_name);
  $channel_description = variable_get('yandex_turbo_rss_description', $site_slogan);
  $channel_analytics = variable_get('yandex_turbo_rss_analytics_type', 'Yandex');
  $max_item_images = intval(variable_get('yandex_turbo_rss_max_item_images', '0'));
  if (!empty($feeds)) {
    foreach ($feeds as $nid => $node) {
      $body = strip_tags(trim($node['body']), '<' . implode('><', $allowed_tags) . '>');
      $body = preg_replace($CDATA, '$1', $body);

      // Skip empty nodes
      if (!$body) {
        continue;
      }

      // Images limit
      if ($max_item_images > 0) {
        $find_images = 0;
        $body = preg_replace_callback("/<img([^>]*)>/Us", function ($matches) use (&$find_images, $max_item_images) {
          $find_images++;
          return $find_images <= $max_item_images ? '<img' . $matches[1] . '>' : '';
        }, $body);
      }

      // If the text is more than 400 characters, then Yandex requires you to arrange paragraphs, but we do from 350
      $content_text = strip_tags($body);
      if (strlen($body) > 350) {
        $body = preg_replace('~(?:\\r?\\n){2,}~', "\n", $body);
        $body = explode("\n", $body);
        foreach ($body as $line_key => $line_val) {
          if (!preg_match("/(\\<p|\\<br|\\<ol|\\<ul|\\<li)/is", $line_val)) {
            $body[$line_key] .= '<br>';
          }
        }
        $body = implode("\n", $body);
      }

      // Make a headline
      $body = "<header><h1>" . check_plain($node['title']) . "</h1></header>" . $body;

      // Link to node
      $node_uri = $node['alias'] ? $node['alias'] : 'node/' . $nid;
      $data = array(
        array(
          'key' => 'title',
          'value' => check_plain($node['title']),
        ),
        array(
          'key' => 'link',
          'value' => url($node_uri, array(
            'absolute' => TRUE,
          )),
        ),
        array(
          'key' => 'pubDate',
          'value' => date(DateTime::RFC822, $node['created']),
        ),
        array(
          'key' => 'turbo:content',
          'value' => '<![CDATA[' . PHP_EOL . $body . PHP_EOL . ']]>',
          'encoded' => TRUE,
        ),
      );
      $items .= format_xml_elements(array(
        array(
          'key' => 'item',
          'value' => PHP_EOL . format_xml_elements($data),
          'encoded' => TRUE,
          'attributes' => array(
            'turbo' => 'true',
          ),
        ),
      ));
    }
    $body = $node = $node_uri = $header = $h1 = null;
  }
  drupal_add_http_header('Content-Type', 'application/rss+xml; charset=utf-8');
  $cms_plugin = format_xml_elements(array(
    array(
      'key' => 'turbo:cms_plugin',
      'value' => 'C2364A7B7F4160D5B2DC1718E3AE4970',
    ),
  ));
  $items = $cms_plugin . $items;
  $rss = array(
    'key' => 'rss',
    'value' => PHP_EOL . format_rss_channel($channel_title, $rss_link, $channel_description, $items),
    'encoded' => TRUE,
    'attributes' => array(
      'xmlns:yandex' => 'http://news.yandex.ru',
      'xmlns:media' => 'http://search.yahoo.com/mrss/',
      'xmlns:turbo' => 'http://search.yahoo.com/mrss/',
      'version' => '2.0',
    ),
  );
  print "<?xml version=\"1.0\" encoding=\"utf-8\"?>" . PHP_EOL . format_xml_elements(array(
    $rss,
  ));
}

Functions

Name	Description
theme_yandex_turbo_page_rss	Prints the RSS page for a feed.
yandex_turbo_page_rss	Page callback: Generates an Yandex Turbo RSS