--- /dev/null
+<?php
+
+class UTW_Import {
+
+ function header() {
+ echo '<div class="wrap">';
+ echo '<h2>'.__('Import Ultimate Tag Warrior').'</h2>';
+ echo '<p>'.__('Steps may take a few minutes depending on the size of your database. Please be patient.').'<br /><br /></p>';
+ }
+
+ function footer() {
+ echo '</div>';
+ }
+
+ function greet() {
+ echo '<div class="narrow">';
+ echo '<p>'.__('Howdy! This imports tags from an existing Ultimate Tag Warrior 3 installation into this blog using the new WordPress native tagging structure.').'</p>';
+ echo '<p>'.__('This has not been tested on any other versions of Ultimate Tag Warrior. Mileage may vary.').'</p>';
+ echo '<p>'.__('To accommodate larger databases for those tag-crazy authors out there, we have made this into an easy 5-step program to help you kick that nasty UTW habit. Just keep clicking along and we will let you know when you are in the clear!').'</p>';
+ echo '<p><strong>'.__('Don’t be stupid - backup your database before proceeding!').'</strong></p>';
+ echo '<form action="admin.php?import=utw&step=1" method="post">';
+ echo '<p class="submit"><input type="submit" name="submit" value="'.__('Step 1 »').'" /></p>';
+ echo '</form>';
+ echo '</div>';
+ }
+
+
+ function dispatch () {
+ if ( empty( $_GET['step'] ) ) {
+ $step = 0;
+ } else {
+ $step = (int) $_GET['step'];
+ }
+
+ if ( $step > 1 )
+ check_admin_referer('import-utw');
+
+ // load the header
+ $this->header();
+
+ switch ( $step ) {
+ case 0 :
+ $this->greet();
+ break;
+ case 1 :
+ $this->import_tags();
+ break;
+ case 2 :
+ $this->import_posts();
+ break;
+ case 3:
+ $this->import_t2p();
+ break;
+ case 4:
+ $this->cleanup_import();
+ break;
+ }
+
+ // load the footer
+ $this->footer();
+ }
+
+
+ function import_tags ( ) {
+ echo '<div class="narrow">';
+ echo '<p><h3>'.__('Reading UTW Tags…').'</h3></p>';
+
+ $tags = $this->get_utw_tags();
+
+ // if we didn't get any tags back, that's all there is folks!
+ if ( !is_array($tags) ) {
+ echo '<p>' . __('No Tags Found!') . '</p>';
+ return false;
+ }
+ else {
+
+ // if there's an existing entry, delete it
+ if ( get_option('utwimp_tags') ) {
+ delete_option('utwimp_tags');
+ }
+
+ add_option('utwimp_tags', $tags);
+
+
+ $count = count($tags);
+
+ echo '<p>' . sprintf( __('Done! <strong>%s</strong> tags were read.'), $count ) . '<br /></p>';
+ echo '<p>' . __('The following tags were found:') . '</p>';
+
+ echo '<ul>';
+
+ foreach ( $tags as $tag_id => $tag_name ) {
+
+ echo '<li>' . $tag_name . '</li>';
+
+ }
+
+ echo '</ul>';
+
+ echo '<br />';
+
+ echo '<p>' . __('If you don’t want to import any of these tags, you should delete them from the UTW tag management page and then re-run this import.') . '</p>';
+
+
+ }
+
+ echo '<form action="admin.php?import=utw&step=2" method="post">';
+ wp_nonce_field('import-utw');
+ echo '<p class="submit"><input type="submit" name="submit" value="'.__('Step 2 »').'" /></p>';
+ echo '</form>';
+ echo '</div>';
+ }
+
+
+ function import_posts ( ) {
+ echo '<div class="narrow">';
+ echo '<p><h3>'.__('Reading UTW Post Tags…').'</h3></p>';
+
+ // read in all the UTW tag -> post settings
+ $posts = $this->get_utw_posts();
+
+ // if we didn't get any tags back, that's all there is folks!
+ if ( !is_array($posts) ) {
+ echo '<p>' . __('No posts were found to have tags!') . '</p>';
+ return false;
+ }
+ else {
+
+ // if there's an existing entry, delete it
+ if ( get_option('utwimp_posts') ) {
+ delete_option('utwimp_posts');
+ }
+
+ add_option('utwimp_posts', $posts);
+
+
+ $count = count($posts);
+
+ echo '<p>' . sprintf( __('Done! <strong>%s</strong> tag to post relationships were read.'), $count ) . '<br /></p>';
+
+ }
+
+ echo '<form action="admin.php?import=utw&step=3" method="post">';
+ wp_nonce_field('import-utw');
+ echo '<p class="submit"><input type="submit" name="submit" value="'.__('Step 3 »').'" /></p>';
+ echo '</form>';
+ echo '</div>';
+
+ }
+
+
+ function import_t2p ( ) {
+
+ echo '<div class="narrow">';
+ echo '<p><h3>'.__('Adding Tags to Posts…').'</h3></p>';
+
+ // run that funky magic!
+ $tags_added = $this->tag2post();
+
+ echo '<p>' . sprintf( __('Done! <strong>%s</strong> tags were added!'), $tags_added ) . '<br /></p>';
+
+ echo '<form action="admin.php?import=utw&step=4" method="post">';
+ wp_nonce_field('import-utw');
+ echo '<p class="submit"><input type="submit" name="submit" value="'.__('Step 4 »').'" /></p>';
+ echo '</form>';
+ echo '</div>';
+
+ }
+
+
+ function get_utw_tags ( ) {
+
+ global $wpdb;
+
+ // read in all the tags from the UTW tags table: should be wp_tags
+ $tags_query = "SELECT tag_id, tag FROM " . $wpdb->prefix . "tags";
+
+ $tags = $wpdb->get_results($tags_query);
+
+ // rearrange these tags into something we can actually use
+ foreach ( $tags as $tag ) {
+
+ $new_tags[$tag->tag_id] = $tag->tag;
+
+ }
+
+ return $new_tags;
+
+ }
+
+ function get_utw_posts ( ) {
+
+ global $wpdb;
+
+ // read in all the posts from the UTW post->tag table: should be wp_post2tag
+ $posts_query = "SELECT tag_id, post_id FROM " . $wpdb->prefix . "post2tag";
+
+ $posts = $wpdb->get_results($posts_query);
+
+ return $posts;
+
+ }
+
+
+ function tag2post ( ) {
+
+ // get the tags and posts we imported in the last 2 steps
+ $tags = get_option('utwimp_tags');
+ $posts = get_option('utwimp_posts');
+
+ // null out our results
+ $tags_added = 0;
+
+ // loop through each post and add its tags to the db
+ foreach ( $posts as $this_post ) {
+
+ $the_post = (int) $this_post->post_id;
+ $the_tag = (int) $this_post->tag_id;
+
+ // what's the tag name for that id?
+ $the_tag = $tags[$the_tag];
+
+ // screw it, just try to add the tag
+ wp_add_post_tags($the_post, $the_tag);
+
+ $tags_added++;
+
+ }
+
+ // that's it, all posts should be linked to their tags properly, pending any errors we just spit out!
+ return $tags_added;
+
+
+ }
+
+
+ function cleanup_import ( ) {
+
+ delete_option('utwimp_tags');
+ delete_option('utwimp_posts');
+
+ $this->done();
+
+ }
+
+
+ function done ( ) {
+
+ echo '<div class="narrow">';
+ echo '<p><h3>'.__('Import Complete!').'</h3></p>';
+
+ echo '<p>' . __('OK, so we lied about this being a 5-step program! You’re done!') . '</p>';
+
+ echo '<p>' . __('Now wasn’t that easy?') . '</p>';
+
+ echo '</div>';
+
+ }
+
+
+ function UTW_Import ( ) {
+
+ // Nothing.
+
+ }
+
+}
+
+
+// create the import object
+$utw_import = new UTW_Import();
+
+// add it to the import page!
+register_importer('utw', 'Ultimate Tag Warrior', __('Import Ultimate Tag Warrior tags into the new native tagging structure.'), array($utw_import, 'dispatch'));
+
+?>
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