428 lines
13 KiB
PHP
428 lines
13 KiB
PHP
<?php
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class WP_Categories_to_Tags {
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var $categories_to_convert = array();
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var $all_categories = array();
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var $tags_to_convert = array();
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var $all_tags = array();
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var $hybrids_ids = array();
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function header() {
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echo '<div class="wrap">';
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if ( ! current_user_can('manage_categories') ) {
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echo '<div class="narrow">';
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echo '<p>' . __('Cheatin’ uh?') . '</p>';
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echo '</div>';
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} else { ?>
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<div class="tablenav"><p style="margin:4px"><a style="display:inline;" class="button-secondary" href="admin.php?import=wp-cat2tag">Categories to Tags</a>
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<a style="display:inline;" class="button-secondary" href="admin.php?import=wp-cat2tag&step=3">Tags to Categories</a></p></div>
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<?php }
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}
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function footer() {
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echo '</div>';
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}
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function populate_cats() {
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global $wpdb;
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$categories = get_categories('get=all');
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foreach ( $categories as $category ) {
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$this->all_categories[] = $category;
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if ( tag_exists( $wpdb->escape($category->name) ) )
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$this->hybrids_ids[] = $category->term_id;
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}
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}
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function populate_tags() {
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global $wpdb;
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$tags = get_terms( array('post_tag'), 'get=all' );
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foreach ( $tags as $tag ) {
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$this->all_tags[] = $tag;
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if ( $this->_category_exists($tag->term_id) )
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$this->hybrids_ids[] = $tag->term_id;
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}
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}
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function categories_tab() {
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$this->populate_cats();
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$cat_num = count($this->all_categories);
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echo '<br class="clear" />';
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if ( $cat_num > 0 ) {
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echo '<h2>Convert Categories (' . $cat_num . ') to Tags.</h2>';
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echo '<div class="narrow">';
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echo '<p>' . __('Hey there. Here you can selectively converts existing categories to tags. To get started, check the categories you wish to be converted, then click the Convert button.') . '</p>';
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echo '<p>' . __('Keep in mind that if you convert a category with child categories, the children become top-level orphans.') . '</p></div>';
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$this->categories_form();
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} elseif ( $hyb_num > 0 ) {
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echo '<p>' . __('You have no categories that can be converted. However some of your categories are both a tag and a category.') . '</p>';
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} else {
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echo '<p>'.__('You have no categories to convert!').'</p>';
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}
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}
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function categories_form() { ?>
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<script type="text/javascript">
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/* <![CDATA[ */
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var checkflag = "false";
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function check_all_rows() {
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field = document.catlist;
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if ( 'false' == checkflag ) {
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for ( i = 0; i < field.length; i++ ) {
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if ( 'cats_to_convert[]' == field[i].name )
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field[i].checked = true;
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}
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checkflag = 'true';
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return '<?php _e('Uncheck All') ?>';
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} else {
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for ( i = 0; i < field.length; i++ ) {
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if ( 'cats_to_convert[]' == field[i].name )
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field[i].checked = false;
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}
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checkflag = 'false';
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return '<?php _e('Check All') ?>';
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}
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}
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/* ]]> */
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</script>
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<form name="catlist" id="catlist" action="admin.php?import=wp-cat2tag&step=2" method="post">
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<p><input type="button" class="button-secondary" value="<?php _e('Check All'); ?>" onclick="this.value=check_all_rows()">
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<?php wp_nonce_field('import-cat2tag'); ?></p>
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<ul style="list-style:none">
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<?php
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$hier = _get_term_hierarchy('category');
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foreach ($this->all_categories as $category) {
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$category = sanitize_term( $category, 'category', 'display' );
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if ( (int) $category->parent == 0 ) {
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if ( in_array( intval($category->term_id), $this->hybrids_ids ) ) {
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?>
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<li style="color:#777;padding-left:1.3em;"><?php echo $category->name . ' (' . $category->count . ') *'; ?></li>
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<?php
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} else {
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?>
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<li><label><input type="checkbox" name="cats_to_convert[]" value="<?php echo intval($category->term_id); ?>" /> <?php echo $category->name . ' (' . $category->count . ')'; ?></label><?php
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if ( isset($hier[$category->term_id]) )
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$this->_category_children($category, $hier);
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?></li>
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<?php
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}
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}
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}
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?>
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</ul>
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<?php
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if ( ! empty($this->hybrids_ids) ) {
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echo '<p>' . __('* This category is also a tag. It cannot be convert again.') . '</p>';
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}
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?>
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<p class="submit"><input type="submit" name="submit" class="button" value="<?php _e('Convert Categories to Tags'); ?>" /></p>
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</form>
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<?php
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}
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function tags_tab() {
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$this->populate_tags();
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$tags_num = count($this->all_tags);
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echo '<br class="clear" />';
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if ( $tags_num > 0 ) {
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echo '<h2>Convert Tags (' . $tags_num . ') to Categories.</h2>';
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echo '<div class="narrow">';
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echo '<p>' . __('Here you can selectively converts existing tags to categories. To get started, check the tags you wish to be converted, then click the Convert button.') . '</p>';
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echo '<p>' . __('The newly created categories will still be associated with the same posts.') . '</p></div>';
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$this->tags_form();
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} elseif ( $hyb_num > 0 ) {
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echo '<p>' . __('You have no tags that can be converted. However some of your tags are both a tag and a category.') . '</p>';
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} else {
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echo '<p>'.__('You have no tags to convert!').'</p>';
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}
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}
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function tags_form() { ?>
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<script type="text/javascript">
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/* <![CDATA[ */
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var checktags = "false";
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function check_all_tagrows() {
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field = document.taglist;
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if ( 'false' == checktags ) {
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for ( i = 0; i < field.length; i++ ) {
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if ( 'tags_to_convert[]' == field[i].name )
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field[i].checked = true;
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}
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checktags = 'true';
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return '<?php _e('Uncheck All') ?>';
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} else {
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for ( i = 0; i < field.length; i++ ) {
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if ( 'tags_to_convert[]' == field[i].name )
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field[i].checked = false;
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}
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checktags = 'false';
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return '<?php _e('Check All') ?>';
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}
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}
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/* ]]> */
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</script>
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<form name="taglist" id="taglist" action="admin.php?import=wp-cat2tag&step=4" method="post">
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<p><input type="button" class="button-secondary" value="<?php _e('Check All'); ?>" onclick="this.value=check_all_tagrows()">
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<?php wp_nonce_field('import-cat2tag'); ?></p>
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<ul style="list-style:none">
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<?php
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foreach ( $this->all_tags as $tag ) {
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if ( in_array( intval($tag->term_id), $this->hybrids_ids ) ) {
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?>
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<li style="color:#777;padding-left:1.3em;"><?php echo attribute_escape($tag->name) . ' (' . $tag->count . ') *'; ?></li>
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<?php
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} else {
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?>
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<li><label><input type="checkbox" name="tags_to_convert[]" value="<?php echo intval($tag->term_id); ?>" /> <?php echo attribute_escape($tag->name) . ' (' . $tag->count . ')'; ?></label></li>
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<?php
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}
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}
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?>
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</ul>
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<?php
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if ( ! empty($this->hybrids_ids) )
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echo '<p>' . __('* This tag is also a category. It cannot be converted again.') . '</p>';
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?>
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<p class="submit"><input type="submit" name="submit_tags" class="button" value="<?php _e('Convert Tags to Categories'); ?>" /></p>
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</form>
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<?php
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}
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function _category_children($parent, $hier) {
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?>
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<ul style="list-style:none">
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<?php
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foreach ($hier[$parent->term_id] as $child_id) {
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$child =& get_category($child_id);
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if ( in_array( intval($child->term_id), $this->hybrids_ids ) ) {
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?>
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<li style="color:#777;padding-left:1.3em;"><?php echo $child->name . ' (' . $child->count . ') *'; ?></li>
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<?php
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} else {
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?>
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<li><label><input type="checkbox" name="cats_to_convert[]" value="<?php echo intval($child->term_id); ?>" /> <?php echo $child->name . ' (' . $child->count . ')'; ?></label>
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<?php
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if ( isset($hier[$child->term_id]) )
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$this->_category_children($child, $hier);
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?> </li>
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<?php
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}
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}
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?>
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</ul>
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<?php
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}
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function _category_exists($cat_id) {
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$cat_id = (int) $cat_id;
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$maybe_exists = category_exists($cat_id);
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if ( $maybe_exists ) {
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return true;
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} else {
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return false;
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}
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}
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function convert_categories() {
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global $wpdb;
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if ( (!isset($_POST['cats_to_convert']) || !is_array($_POST['cats_to_convert'])) && empty($this->categories_to_convert)) {
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echo '<div class="narrow">';
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echo '<p>' . sprintf(__('Uh, oh. Something didn’t work. Please <a href="%s">try again</a>.'), 'admin.php?import=wp-cat2tag') . '</p>';
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echo '</div>';
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return;
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}
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if ( empty($this->categories_to_convert) )
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$this->categories_to_convert = $_POST['cats_to_convert'];
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$hier = _get_term_hierarchy('category');
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echo '<ul>';
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foreach ( (array) $this->categories_to_convert as $cat_id) {
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$cat_id = (int) $cat_id;
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echo '<li>' . sprintf(__('Converting category #%s ... '), $cat_id);
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if (!$this->_category_exists($cat_id)) {
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_e('Category doesn\'t exist!');
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} else {
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$category =& get_category($cat_id);
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if ( tag_exists($wpdb->escape($category->name)) ) {
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_e('Category is already a tag.');
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echo '</li>';
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continue;
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}
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// If the category is the default, leave category in place and create tag.
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if ( get_option('default_category') == $category->term_id ) {
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$id = wp_insert_term($category->name, 'post_tag', array('slug' => $category->slug));
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$id = $id['term_taxonomy_id'];
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$posts = get_objects_in_term($category->term_id, 'category');
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foreach ( $posts as $post ) {
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if ( !$wpdb->get_var( $wpdb->prepare("SELECT object_id FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id = %d", $post, $id) ) )
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$wpdb->query( $wpdb->prepare("INSERT INTO $wpdb->term_relationships (object_id, term_taxonomy_id) VALUES (%d, %d)", $post, $id) );
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clean_post_cache($post);
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}
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} else {
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$tt_ids = $wpdb->get_col( $wpdb->prepare("SELECT term_taxonomy_id FROM $wpdb->term_taxonomy WHERE term_id = %d AND taxonomy = 'category'", $category->term_id) );
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if ( $tt_ids ) {
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$posts = $wpdb->get_col("SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id IN (" . join(',', $tt_ids) . ") GROUP BY object_id");
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foreach ( (array) $posts as $post )
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clean_post_cache($post);
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}
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// Change the category to a tag.
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$wpdb->query( $wpdb->prepare("UPDATE $wpdb->term_taxonomy SET taxonomy = 'post_tag' WHERE term_id = %d AND taxonomy = 'category'", $category->term_id) );
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$terms = $wpdb->get_col( $wpdb->prepare("SELECT term_id FROM $wpdb->term_taxonomy WHERE parent = %d AND taxonomy = 'category'", $category->term_id) );
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foreach ( (array) $terms as $term )
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clean_category_cache($term);
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// Set all parents to 0 (root-level) if their parent was the converted tag
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$wpdb->query( $wpdb->prepare("UPDATE $wpdb->term_taxonomy SET parent = 0 WHERE parent = %d AND taxonomy = 'category'", $category->term_id) );
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}
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// Clean the cache
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clean_category_cache($category->term_id);
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_e('Converted successfully.');
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}
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echo '</li>';
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}
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echo '</ul>';
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echo '<p>' . sprintf( __('We’re all done here, but you can always <a href="%s">convert more</a>.'), 'admin.php?import=wp-cat2tag' ) . '</p>';
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}
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function convert_tags() {
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global $wpdb;
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if ( (!isset($_POST['tags_to_convert']) || !is_array($_POST['tags_to_convert'])) && empty($this->tags_to_convert)) {
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echo '<div class="narrow">';
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echo '<p>' . sprintf(__('Uh, oh. Something didn’t work. Please <a href="%s">try again</a>.'), 'admin.php?import=wp-cat2tag&step=3') . '</p>';
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echo '</div>';
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return;
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}
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if ( empty($this->categories_to_convert) )
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$this->tags_to_convert = $_POST['tags_to_convert'];
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$clean_cache = array();
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echo '<ul>';
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foreach ( (array) $this->tags_to_convert as $tag_id) {
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$tag_id = (int) $tag_id;
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echo '<li>' . sprintf(__('Converting tag #%s ... '), $tag_id);
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if ( ! is_term($tag_id, 'post_tag') ) {
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_e('Tag doesn\'t exist!');
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} else {
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if ( is_term($tag_id, 'category') ) {
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_e('This Tag is already a Category.');
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echo '</li>';
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continue;
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}
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$tt_ids = $wpdb->get_col( $wpdb->prepare("SELECT term_taxonomy_id FROM $wpdb->term_taxonomy WHERE term_id = %d AND taxonomy = 'post_tag'", $tag_id) );
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if ( $tt_ids ) {
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$posts = $wpdb->get_col("SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id IN (" . join(',', $tt_ids) . ") GROUP BY object_id");
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foreach ( (array) $posts as $post )
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clean_post_cache($post);
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}
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// Change the tag to a category.
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$parent = $wpdb->get_var( $wpdb->prepare("SELECT parent FROM $wpdb->term_taxonomy WHERE term_id = %d AND taxonomy = 'post_tag'", $tag_id) );
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if ( 0 == $parent || (0 < (int) $parent && $this->_category_exists($parent)) )
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$reset_parent = '';
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else $reset_parent = ", parent = '0'";
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$wpdb->query( $wpdb->prepare("UPDATE $wpdb->term_taxonomy SET taxonomy = 'category' $reset_parent WHERE term_id = %d AND taxonomy = 'post_tag'", $tag_id) );
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// Clean the cache
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$clean_cache[] = $tag_id;
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_e('Converted successfully.');
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}
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echo '</li>';
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}
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clean_term_cache( $clean_cache, 'post_tag' );
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delete_option('category_children');
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echo '</ul>';
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echo '<p>' . sprintf( __('We’re all done here, but you can always <a href="%s">convert more</a>.'), 'admin.php?import=wp-cat2tag&step=3' ) . '</p>';
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}
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function init() {
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$step = (isset($_GET['step'])) ? (int) $_GET['step'] : 1;
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$this->header();
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if ( current_user_can('manage_categories') ) {
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switch ($step) {
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case 1 :
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$this->categories_tab();
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break;
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case 2 :
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check_admin_referer('import-cat2tag');
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$this->convert_categories();
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break;
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case 3 :
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$this->tags_tab();
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break;
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case 4 :
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check_admin_referer('import-cat2tag');
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$this->convert_tags();
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break;
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}
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}
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$this->footer();
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}
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function WP_Categories_to_Tags() {
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// Do nothing.
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}
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}
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$wp_cat2tag_importer = new WP_Categories_to_Tags();
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register_importer('wp-cat2tag', __('Categories and Tags Converter'), __('Convert existing categories to tags or tags to categories, selectively.'), array(&$wp_cat2tag_importer, 'init'));
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?>
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