<?php
/**
 * Functions library for theme management.
 *
 * @version		$Rev: 336 $
 * @author		Jordi Canals
 * @package		Alkivia
 * @subpackage	Framework
 * @link		http://alkivia.org
 * @license		http://www.gnu.org/licenses/gpl.html GNU General Public License v3

	Copyright (C) 2009 Jordi Canals <alkivia@jcanals.cat>

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
 	the Free Software Foundation, either version 3 of the License, or
 	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
 	but WITHOUT ANY WARRANTY; without even the implied warranty of
 	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 	GNU General Public License for more details.

 	You should have received a copy of the GNU General Public License
 	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * Redirects user to a new page.
 * This is done if the custom field 'redirect' is defined as:
 * 		+ Filed Name:	redirect
 * 		+ Field Value:	New target URL.
 *
 * @return void
 */
function ak_theme_redirect() {
	global $post;

	if ( is_page() || is_single() ) {
		if ( $meta = get_post_meta($post->ID, 'redirect', true) ) {
			wp_redirect($meta, 301);
			exit;
		}
	}
}

/**
 * Checks if the sidebar is used.
 * Do it by checking if there is any widget on a sidebar number.
 *
 * @param int|string $index	Sidebar number or id
 * @return boolean		True if this sidebar is used and contains any widget, false if not.
 */
function ak_theme_is_sidebar( $index ) {
	$sidebar = wp_get_sidebars_widgets();
	if ( is_numeric($index) ) {
	    $index = 'sidebar-' . $index;
	}

	if (isset($sidebar[$index]) && count($sidebar[$index]) ) {
		return true;
	} else {
		return false;
	}
}