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   1  <?php
   2  /**
   3   * Loads the correct template based on the visitor's url
   4   * @package WordPress
   5   */
   6  if ( defined('WP_USE_THEMES') && WP_USE_THEMES )
   7      /**
   8       * Fires before determining which template to load.
   9       *
  10       * @since 1.5.0
  11       */
  12      do_action( 'template_redirect' );
  13  
  14  /**
  15   * Filter whether to allow 'HEAD' requests to generate content.
  16   *
  17   * Provides a significant performance bump by exiting before the page
  18   * content loads for 'HEAD' requests. See #14348.
  19   *
  20   * @since 3.5.0
  21   *
  22   * @param bool $exit Whether to exit without generating any content for 'HEAD' requests. Default true.
  23   */
  24  if ( 'HEAD' === $_SERVER['REQUEST_METHOD'] && apply_filters( 'exit_on_http_head', true ) )
  25      exit();
  26  
  27  // Process feeds and trackbacks even if not using themes.
  28  if ( is_robots() ) :
  29      /**
  30       * Fired when the template loader determines a robots.txt request.
  31       *
  32       * @since 2.1.0
  33       */
  34      do_action( 'do_robots' );
  35      return;
  36  elseif ( is_feed() ) :
  37      do_feed();
  38      return;
  39  elseif ( is_trackback() ) :
  40      include ( ABSPATH . 'wp-trackback.php' );
  41      return;
  42  endif;
  43  
  44  if ( defined('WP_USE_THEMES') && WP_USE_THEMES ) :
  45      $template = false;
  46      if     ( is_404()            && $template = get_404_template()            ) :
  47      elseif ( is_search()         && $template = get_search_template()         ) :
  48      elseif ( is_front_page()     && $template = get_front_page_template()     ) :
  49      elseif ( is_home()           && $template = get_home_template()           ) :
  50      elseif ( is_post_type_archive() && $template = get_post_type_archive_template() ) :
  51      elseif ( is_tax()            && $template = get_taxonomy_template()       ) :
  52      elseif ( is_attachment()     && $template = get_attachment_template()     ) :
  53          remove_filter('the_content', 'prepend_attachment');
  54      elseif ( is_single()         && $template = get_single_template()         ) :
  55      elseif ( is_page()           && $template = get_page_template()           ) :
  56      elseif ( is_category()       && $template = get_category_template()       ) :
  57      elseif ( is_tag()            && $template = get_tag_template()            ) :
  58      elseif ( is_author()         && $template = get_author_template()         ) :
  59      elseif ( is_date()           && $template = get_date_template()           ) :
  60      elseif ( is_archive()        && $template = get_archive_template()        ) :
  61      elseif ( is_comments_popup() && $template = get_comments_popup_template() ) :
  62      elseif ( is_paged()          && $template = get_paged_template()          ) :
  63      else :
  64          $template = get_index_template();
  65      endif;
  66      /**
  67       * Filter the path of the current template before including it.
  68       *
  69       * @since 3.0.0
  70       *
  71       * @param string $template The path of the template to include.
  72       */
  73      if ( $template = apply_filters( 'template_include', $template ) )
  74          include( $template );
  75      return;
  76  endif;