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   1  <?php
   2  
   3  class RSS_Import {
   4  
   5      var $posts = array ();
   6      var $file;
   7  
   8  	function header() {
   9          echo '<div class="wrap">';
  10          echo '<h2>'.__('Import RSS').'</h2>';
  11      }
  12  
  13  	function footer() {
  14          echo '</div>';
  15      }
  16  
  17  	function unhtmlentities($string) { // From php.net for < 4.3 compat
  18          $trans_tbl = get_html_translation_table(HTML_ENTITIES);
  19          $trans_tbl = array_flip($trans_tbl);
  20          return strtr($string, $trans_tbl);
  21      }
  22  
  23  	function greet() {
  24          echo '<p>'.__('Howdy! This importer allows you to extract posts from any RSS 2.0 file into your blog. This is useful if you want to import your posts from a system that is not handled by a custom import tool. Pick an RSS file to upload and click Import.').'</p>';
  25          wp_import_upload_form("admin.php?import=rss&amp;step=1");
  26      }
  27  
  28  	function get_posts() {
  29          global $wpdb;
  30  
  31          set_magic_quotes_runtime(0);
  32          $datalines = file($this->file); // Read the file into an array
  33          $importdata = implode('', $datalines); // squish it
  34          $importdata = str_replace(array ("\r\n", "\r"), "\n", $importdata);
  35  
  36          preg_match_all('|<item>(.*?)</item>|is', $importdata, $this->posts);
  37          $this->posts = $this->posts[1];
  38          $index = 0;
  39          foreach ($this->posts as $post) {
  40              preg_match('|<title>(.*?)</title>|is', $post, $post_title);
  41              $post_title = $wpdb->escape(trim($post_title[1]));
  42  
  43              preg_match('|<pubdate>(.*?)</pubdate>|is', $post, $post_date);
  44  
  45              if ($post_date) {
  46                  $post_date = strtotime($post_date[1]);
  47              } else {
  48                  // if we don't already have something from pubDate
  49                  preg_match('|<dc:date>(.*?)</dc:date>|is', $post, $post_date);
  50                  $post_date = preg_replace('|([-+])([0-9]+):([0-9]+)$|', '\1\2\3', $post_date[1]);
  51                  $post_date = str_replace('T', ' ', $post_date);
  52                  $post_date = strtotime($post_date);
  53              }
  54  
  55              $post_date = gmdate('Y-m-d H:i:s', $post_date);
  56  
  57              preg_match_all('|<category>(.*?)</category>|is', $post, $categories);
  58              $categories = $categories[1];
  59  
  60              if (!$categories) {
  61                  preg_match_all('|<dc:subject>(.*?)</dc:subject>|is', $post, $categories);
  62                  $categories = $categories[1];
  63              }
  64  
  65              $cat_index = 0;
  66              foreach ($categories as $category) {
  67                  $categories[$cat_index] = $wpdb->escape($this->unhtmlentities($category));
  68                  $cat_index++;
  69              }
  70  
  71              preg_match('|<guid.+?>(.*?)</guid>|is', $post, $guid);
  72              if ($guid)
  73                  $guid = $wpdb->escape(trim($guid[1]));
  74              else
  75                  $guid = '';
  76  
  77              preg_match('|<content:encoded>(.*?)</content:encoded>|is', $post, $post_content);
  78              $post_content = str_replace(array ('<![CDATA[', ']]>'), '', $wpdb->escape(trim($post_content[1])));
  79  
  80              if (!$post_content) {
  81                  // This is for feeds that put content in description
  82                  preg_match('|<description>(.*?)</description>|is', $post, $post_content);
  83                  $post_content = $wpdb->escape($this->unhtmlentities(trim($post_content[1])));
  84              }
  85  
  86              // Clean up content
  87              $post_content = preg_replace('|<(/?[A-Z]+)|e', "'<' . strtolower('$1')", $post_content);
  88              $post_content = str_replace('<br>', '<br />', $post_content);
  89              $post_content = str_replace('<hr>', '<hr />', $post_content);
  90  
  91              $post_author = 1;
  92              $post_status = 'publish';
  93              $this->posts[$index] = compact('post_author', 'post_date', 'post_content', 'post_title', 'post_status', 'guid', 'categories');
  94              $index++;
  95          }
  96      }
  97  
  98  	function import_posts() {
  99          echo '<ol>';
 100  
 101          foreach ($this->posts as $post) {
 102              echo "<li>".__('Importing post...');
 103  
 104              extract($post);
 105  
 106              if ($post_id = post_exists($post_title, $post_content, $post_date)) {
 107                  _e('Post already imported');
 108              } else {
 109                  $post_id = wp_insert_post($post);
 110                  if (!$post_id) {
 111                      _e("Couldn't get post ID");
 112                      return;
 113                  }
 114  
 115                  if (0 != count($categories))
 116                      wp_create_categories($categories, $post_id);
 117                  _e('Done !');
 118              }
 119              echo '</li>';
 120          }
 121  
 122          echo '</ol>';
 123  
 124      }
 125  
 126  	function import() {
 127          $file = wp_import_handle_upload();
 128          if ( isset($file['error']) ) {
 129              echo $file['error'];
 130              return;
 131          }
 132  
 133          $this->file = $file['file'];
 134          $this->get_posts();
 135          $this->import_posts();
 136          wp_import_cleanup($file['id']);
 137  
 138          echo '<h3>';
 139          printf(__('All done. <a href="%s">Have fun!</a>'), get_option('home'));
 140          echo '</h3>';
 141      }
 142  
 143  	function dispatch() {
 144          if (empty ($_GET['step']))
 145              $step = 0;
 146          else
 147              $step = (int) $_GET['step'];
 148  
 149          $this->header();
 150  
 151          switch ($step) {
 152              case 0 :
 153                  $this->greet();
 154                  break;
 155              case 1 :
 156                  $this->import();
 157                  break;
 158          }
 159  
 160          $this->footer();
 161      }
 162  
 163  	function RSS_Import() {
 164          // Nothing.
 165      }
 166  }
 167  
 168  $rss_import = new RSS_Import();
 169  
 170  register_importer('rss', 'RSS', __('Import posts from an RSS feed'), array ($rss_import, 'dispatch'));
 171  ?>