From ab8c90f89ea21999496b9bf2c3214b44e7fdbdd1 Mon Sep 17 00:00:00 2001
From: rob1n <rob1n@git.wordpress.org>
Date: Sat, 7 Apr 2007 04:58:28 +0000
Subject: [PATCH] Add initial category to tag importing. see #4107

git-svn-id: https://develop.svn.wordpress.org/trunk@5201 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-admin/import/wp-cat2tag.php | 145 +++++++++++++++++++++++++++++++++
 1 file changed, 145 insertions(+)
 create mode 100644 wp-admin/import/wp-cat2tag.php

diff --git a/wp-admin/import/wp-cat2tag.php b/wp-admin/import/wp-cat2tag.php
new file mode 100644
index 0000000000..b10edb439e
--- /dev/null
+++ b/wp-admin/import/wp-cat2tag.php
@@ -0,0 +1,145 @@
+<?php
+
+error_reporting(E_ALL);
+
+class WP_Categories_to_Tags {
+	var $categories_to_convert = array();
+	var $all_categories = array();
+	
+	function header() {
+		print '<div class="wrap">';
+		print '<h2>' . __('Convert Categories to Tags') . '</h2>';
+	}
+	
+	function footer() {
+		print '</div>';
+	}
+	
+	function populate_all_categories() {
+		$this->all_categories =& get_categories('hide_empty=0&hierarchal=0');
+	}
+	
+	function welcome() {
+		print '<div class="narrow">';
+		print '<p>' . __('Howdy! This converter allows you to selectively convert existing categories to tags. To get started, check the checkboxes of the categories you wish to be converted, then click the Convert button.') . '</p>';
+		print '<p>' . __('Keep in mind that if you convert a category with child categories, those child categories get their parent setting removed, so they\'re in the root.') . '</p>';
+		
+		$this->categories_form();
+		
+		print '</div>';
+	}
+	
+	function categories_form() {
+		$this->populate_all_categories();
+		
+		print '<form action="admin.php?import=wp-cat2tag&amp;step=2" method="post">';
+		print '<ul style="list-style:none">';
+		
+		$hier = _get_category_hierarchy();
+		
+		foreach ($this->all_categories as $category) {
+			if ((int) $category->category_parent == 0) {
+				print '<li><label><input type="checkbox" name="cats_to_convert[]" value="' . intval($category->cat_ID) . '" /> ' . $category->cat_name . ' (' . $category->category_count . ')</label>';
+				
+				if (isset($hier[$category->cat_ID])) {
+					$this->_category_children($category, $hier);
+				}
+				
+				print '</li>';
+			}
+		}
+		
+		print '</ul>';
+		print '<p class="submit"><input type="submit" name="submit" value="' . __('Convert &raquo;') . '" /></p>';
+		print '</form>';
+	}
+	
+	function _category_children($parent, $hier) {
+		print '<ul style="list-style:none">';
+		
+		foreach ($hier[$parent->cat_ID] as $child_id) {
+			$child =& get_category($child_id);
+			
+			print '<li><label><input type="checkbox" name="cats_to_convert[]" value="' . intval($child->cat_ID) . '" /> ' . $child->cat_name . ' (' . $child->category_count . ')</label>';
+			
+			if (isset($hier[$child->cat_ID])) {
+				$this->_category_children($child, $hier);
+			}
+			
+			print '</li>';
+		}
+		
+		print '</ul>';
+	}
+	
+	function convert_them() {
+		global $wpdb;
+		
+		if (!isset($_POST['cats_to_convert']) || !is_array($_POST['cats_to_convert'])) {
+			print '<div class="narrow">';
+			print '<p>' . sprintf(__('Uh, oh. Something didn\'t work. Please <a href="%s">try again</a>.'), 'admin.php?import=wp-cat2tag') . '</p>';
+			print '</div>';
+		}
+		
+		$this->categories_to_convert = $_POST['cats_to_convert'];
+		$hier = _get_category_hierarchy();
+		
+		print '<ul>';
+		
+		foreach ($this->categories_to_convert as $cat_id) {
+			$cat_id = (int) $cat_id;
+			
+			print '<li>' . __('Converting category') . ' #' . $cat_id . '... ';
+			
+			if (!category_exists($cat_id)) {
+				_e('Category doesn\'t exist!');
+			} else {
+				$category =& get_category($cat_id);
+				
+				if ($category->link_count > 0) {
+					$type = $category->type | TAXONOMY_TAG;
+				} else {
+					$type = TAXONOMY_TAG;
+				}
+				
+				$wpdb->query("UPDATE $wpdb->categories SET type = '$type' WHERE cat_ID = '{$category->cat_ID}'");
+				
+				$wpdb->query("UPDATE $wpdb->post2cat SET rel_type = 'tag' WHERE cat_ID = '{$category->cat_ID}'");
+				$wpdb->query("UPDATE $wpdb->categories SET tag_count = '{$category->category_count}', category_count = '0' WHERE cat_ID = '{$category->cat_ID}'");
+				
+				_e('Converted successfully.');
+			}
+			
+			print '</li>';
+		}
+		
+		print '</ul>';
+	}
+	
+	function init() {
+		if (!isset($_GET['step'])) {
+			$step = 1;
+		} else {
+			$step = (int) $_GET['step'];
+		}
+		
+		$this->header();
+		
+		switch ($step) {
+			case 1:
+				$this->welcome();
+				break;
+			case 2:
+				$this->convert_them();
+				break;
+		}
+		
+		$this->footer();
+	}
+}
+
+$wp_cat2tag_importer = new WP_Categories_to_Tags;
+
+register_importer('wp-cat2tag', __('Categories to Tags Converter'), __('Convert existing categories to tags, selectively.'), array(&$wp_cat2tag_importer, 'init'));
+
+?>
\ No newline at end of file