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   1  <?php
   2  /**
   3   * Parse OPML XML files and store in globals.
   4   *
   5   * @package WordPress
   6   * @subpackage Administration
   7   */
   8  
   9  if ( ! defined('ABSPATH') )
  10      die();
  11  
  12  global $opml, $map;
  13  
  14  // columns we wish to find are: link_url, link_name, link_target, link_description
  15  // we need to map XML attribute names to our columns
  16  $opml_map = array('URL'         => 'link_url',
  17      'HTMLURL'     => 'link_url',
  18      'TEXT'        => 'link_name',
  19      'TITLE'       => 'link_name',
  20      'TARGET'      => 'link_target',
  21      'DESCRIPTION' => 'link_description',
  22      'XMLURL'      => 'link_rss'
  23  );
  24  
  25  $map = $opml_map;
  26  
  27  /**
  28   * XML callback function for the start of a new XML tag.
  29   *
  30   * @since 0.71
  31   * @access private
  32   *
  33   * @uses $updated_timestamp Not used inside function.
  34   * @uses $all_links Not used inside function.
  35   * @uses $map Stores names of attributes to use.
  36   * @global array $names
  37   * @global array $urls
  38   * @global array $targets
  39   * @global array $descriptions
  40   * @global array $feeds
  41   *
  42   * @param mixed $parser XML Parser resource.
  43   * @param string $tagName XML element name.
  44   * @param array $attrs XML element attributes.
  45   */
  46  function startElement($parser, $tagName, $attrs) {
  47      global $updated_timestamp, $all_links, $map;
  48      global $names, $urls, $targets, $descriptions, $feeds;
  49  
  50      if ($tagName == 'OUTLINE') {
  51          foreach (array_keys($map) as $key) {
  52              if (isset($attrs[$key])) {
  53                  $$map[$key] = $attrs[$key];
  54              }
  55          }
  56  
  57          //echo("got data: link_url = [$link_url], link_name = [$link_name], link_target = [$link_target], link_description = [$link_description]<br />\n");
  58  
  59          // save the data away.
  60          $names[] = $link_name;
  61          $urls[] = $link_url;
  62          $targets[] = $link_target;
  63          $feeds[] = $link_rss;
  64          $descriptions[] = $link_description;
  65      } // end if outline
  66  }
  67  
  68  /**
  69   * XML callback function that is called at the end of a XML tag.
  70   *
  71   * @since 0.71
  72   * @access private
  73   * @package WordPress
  74   * @subpackage Dummy
  75   *
  76   * @param mixed $parser XML Parser resource.
  77   * @param string $tagName XML tag name.
  78   */
  79  function endElement($parser, $tagName) {
  80      // nothing to do.
  81  }
  82  
  83  // Create an XML parser
  84  $xml_parser = xml_parser_create();
  85  
  86  // Set the functions to handle opening and closing tags
  87  xml_set_element_handler($xml_parser, "startElement", "endElement");
  88  
  89  if (!xml_parse($xml_parser, $opml, true)) {
  90      echo(sprintf(__('XML error: %1$s at line %2$s'),
  91      xml_error_string(xml_get_error_code($xml_parser)),
  92      xml_get_current_line_number($xml_parser)));
  93  }
  94  
  95  // Free up memory used by the XML parser
  96  xml_parser_free($xml_parser);