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   1  <?php
   2  /**
   3   * Simple Tags Plugin Importer
   4   *
   5   * @package WordPress
   6   * @subpackage Importer
   7   */
   8  
   9  /**
  10   * Simple Tags Plugin Tags converter class.
  11   *
  12   * Will convert Simple Tags Plugin tags over to the WordPress 2.3 taxonomy.
  13   *
  14   * @since unknown
  15   */
  16  class STP_Import {
  17  	function header()  {
  18          echo '<div class="wrap">';
  19          screen_icon();
  20          echo '<h2>'.__('Import Simple Tagging').'</h2>';
  21          echo '<p>'.__('Steps may take a few minutes depending on the size of your database. Please be patient.').'<br /><br /></p>';
  22      }
  23  
  24  	function footer() {
  25          echo '</div>';
  26      }
  27  
  28  	function greet() {
  29          echo '<div class="narrow">';
  30          echo '<p>'.__('Howdy! This imports tags from Simple Tagging 1.6.2 into WordPress tags.').'</p>';
  31          echo '<p>'.__('This has not been tested on any other versions of Simple Tagging. Mileage may vary.').'</p>';
  32          echo '<p>'.__('To accommodate larger databases for those tag-crazy authors out there, we have made this into an easy 4-step program to help you kick that nasty Simple Tagging habit. Just keep clicking along and we will let you know when you are in the clear!').'</p>';
  33          echo '<p><strong>'.__('Don&#8217;t be stupid - backup your database before proceeding!').'</strong></p>';
  34          echo '<form action="admin.php?import=stp&amp;step=1" method="post">';
  35          wp_nonce_field('import-stp');
  36          echo '<p class="submit"><input type="submit" name="submit" class="button" value="'.esc_attr__('Step 1').'" /></p>';
  37          echo '</form>';
  38          echo '</div>';
  39      }
  40  
  41  	function dispatch () {
  42          if ( empty( $_GET['step'] ) ) {
  43              $step = 0;
  44          } else {
  45              $step = (int) $_GET['step'];
  46          }
  47          // load the header
  48          $this->header();
  49          switch ( $step ) {
  50              case 0 :
  51                  $this->greet();
  52                  break;
  53              case 1 :
  54                  check_admin_referer('import-stp');
  55                  $this->import_posts();
  56                  break;
  57              case 2:
  58                  check_admin_referer('import-stp');
  59                  $this->import_t2p();
  60                  break;
  61              case 3:
  62                  check_admin_referer('import-stp');
  63                  $this->cleanup_import();
  64                  break;
  65          }
  66          // load the footer
  67          $this->footer();
  68      }
  69  
  70  
  71  	function import_posts ( ) {
  72          echo '<div class="narrow">';
  73          echo '<p><h3>'.__('Reading STP Post Tags&#8230;').'</h3></p>';
  74  
  75          // read in all the STP tag -> post settings
  76          $posts = $this->get_stp_posts();
  77  
  78          // if we didn't get any tags back, that's all there is folks!
  79          if ( !is_array($posts) ) {
  80              echo '<p>' . __('No posts were found to have tags!') . '</p>';
  81              return false;
  82          }
  83          else {
  84              // if there's an existing entry, delete it
  85              if ( get_option('stpimp_posts') ) {
  86                  delete_option('stpimp_posts');
  87              }
  88  
  89              add_option('stpimp_posts', $posts);
  90              $count = count($posts);
  91              echo '<p>' . sprintf( _n('Done! <strong>%s</strong> tag to post relationships were read.', 'Done! <strong>%s</strong> tags to post relationships were read.', $count), $count ) . '<br /></p>';
  92          }
  93  
  94          echo '<form action="admin.php?import=stp&amp;step=2" method="post">';
  95          wp_nonce_field('import-stp');
  96          echo '<p class="submit"><input type="submit" name="submit" class="button" value="'.esc_attr__('Step 2').'" /></p>';
  97          echo '</form>';
  98          echo '</div>';
  99      }
 100  
 101  
 102  	function import_t2p ( ) {
 103          echo '<div class="narrow">';
 104          echo '<p><h3>'.__('Adding Tags to Posts&#8230;').'</h3></p>';
 105  
 106          // run that funky magic!
 107          $tags_added = $this->tag2post();
 108  
 109          echo '<p>' . sprintf( _n('Done! <strong>%s</strong> tag was added!', 'Done! <strong>%s</strong> tags were added!', $tags_added), $tags_added ) . '<br /></p>';
 110          echo '<form action="admin.php?import=stp&amp;step=3" method="post">';
 111          wp_nonce_field('import-stp');
 112          echo '<p class="submit"><input type="submit" name="submit" class="button" value="'.esc_attr__('Step 3').'" /></p>';
 113          echo '</form>';
 114          echo '</div>';
 115      }
 116  
 117  	function get_stp_posts ( ) {
 118          global $wpdb;
 119          // read in all the posts from the STP post->tag table: should be wp_post2tag
 120          $posts_query = "SELECT post_id, tag_name FROM " . $wpdb->prefix . "stp_tags";
 121          $posts = $wpdb->get_results($posts_query);
 122          return $posts;
 123      }
 124  
 125  	function tag2post ( ) {
 126          global $wpdb;
 127  
 128          // get the tags and posts we imported in the last 2 steps
 129          $posts = get_option('stpimp_posts');
 130  
 131          // null out our results
 132          $tags_added = 0;
 133  
 134          // loop through each post and add its tags to the db
 135          foreach ( $posts as $this_post ) {
 136              $the_post = (int) $this_post->post_id;
 137              $the_tag = $wpdb->escape($this_post->tag_name);
 138              // try to add the tag
 139              wp_add_post_tags($the_post, $the_tag);
 140              $tags_added++;
 141          }
 142  
 143          // that's it, all posts should be linked to their tags properly, pending any errors we just spit out!
 144          return $tags_added;
 145      }
 146  
 147  	function cleanup_import ( ) {
 148          delete_option('stpimp_posts');
 149          $this->done();
 150      }
 151  
 152  	function done ( ) {
 153          echo '<div class="narrow">';
 154          echo '<p><h3>'.__('Import Complete!').'</h3></p>';
 155          echo '<p>' . __('OK, so we lied about this being a 4-step program! You&#8217;re done!') . '</p>';
 156          echo '<p>' . __('Now wasn&#8217;t that easy?') . '</p>';
 157          echo '</div>';
 158      }
 159  
 160  	function STP_Import ( ) {
 161          // Nothing.
 162      }
 163  }
 164  
 165  // create the import object
 166  $stp_import = new STP_Import();
 167  
 168  // add it to the import page!
 169  register_importer('stp', 'Simple Tagging', __('Import Simple Tagging tags into WordPress tags.'), array($stp_import, 'dispatch'));
 170  ?>