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