<?php

/**

 * WordPress Link Template Functions

 *

 * @package WordPress

 * @subpackage Template

 */

/**

 *

 * @since 1.2.0

 */

	/**

	 *

	 * @since 1.5.0

	 *

	 */

}

/**

 *

 * Conditionally adds a trailing slash if the permalink structure has a trailing

 * slash, strips the trailing slash if not. The string is passed through the

 *

 * @since 2.2.0

 * @return string The URL with the trailing slash appended or stripped.

 */

function user_trailingslashit($string, $type_of_url = '') {

	global $wp_rewrite;

	if ( $wp_rewrite->use_trailing_slashes )

		$string = trailingslashit($string);

	else

		$string = untrailingslashit($string);

	/**

	 *

	 * @since 2.2.0

	 *

	 * @param string $string      URL with or without a trailing slash.

	 * @param string $type_of_url The type of URL being considered. Accepts 'single', 'single_trackback',

	 */

}

/**

 *

 * The permalink mode title will use the post title for the 'a' element 'id'

 * attribute. The id mode uses 'post-' with the post ID for the 'id' attribute.

 *

 * @since 0.71

 *

 */

function permalink_anchor( $mode = 'id' ) {

	$post = get_post();

	switch ( strtolower( $mode ) ) {

		case 'title':

			$title = sanitize_title( $post->post_title ) . '-' . $post->ID;

			echo '<a id="'.$title.'"></a>';

			break;

		case 'id':

		default:

			echo '<a id="post-' . $post->ID . '"></a>';

			break;

	}

}

/**

 *

 * This function is an alias for get_permalink().

 *

 * @since 3.9.0

 *

 * @see get_permalink()

 *

 * @param bool        $leavename Optional. Whether to keep post name or page name. Default false.

 */

}

/**

 *

 * @since 1.0.0

 *

 * @param bool        $leavename Optional. Whether to keep post name or page name. Default false.

 */

	$rewritecode = array(

		'%year%',

		'%monthnum%',

		'%day%',

		'%hour%',

		'%minute%',

		'%second%',

		$leavename? '' : '%postname%',

		'%post_id%',

		'%category%',

		'%author%',

		$leavename? '' : '%pagename%',

	);

		$sample = true;

	} else {

		$sample = false;

	}

	if ( empty($post->ID) )

		return false;

	if ( $post->post_type == 'page' )

		return get_page_link($post, $leavename, $sample);

	elseif ( $post->post_type == 'attachment' )

		return get_attachment_link( $post, $leavename );

	elseif ( in_array($post->post_type, get_post_types( array('_builtin' => false) ) ) )

		return get_post_permalink($post, $leavename, $sample);

	$permalink = get_option('permalink_structure');

	/**

	 *

	 * Only applies to posts with post_type of 'post'.

	 *

	 * @since 3.0.0

	 *

	 * @param string  $permalink The site's permalink structure.

	 * @param WP_Post $post      The post in question.

	 * @param bool    $leavename Whether to keep the post name.

	 */

	$permalink = apply_filters( 'pre_post_link', $permalink, $post, $leavename );

	if ( '' != $permalink && !in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft', 'future' ) ) ) {

		$unixtime = strtotime($post->post_date);

		$category = '';

		if ( strpos($permalink, '%category%') !== false ) {

			$cats = get_the_category($post->ID);

			if ( $cats ) {

				/**

				 *

				 * @since 3.5.0

				 *

				 * @param WP_Post  $post The post in question.

				 */

				$category_object = apply_filters( 'post_link_category', $cats[0], $cats, $post );

				$category_object = get_term( $category_object, 'category' );

				$category = $category_object->slug;

				if ( $parent = $category_object->parent )

					$category = get_category_parents($parent, false, '/', true) . $category;

			}

			// show default category in permalinks, without

			// having to assign it explicitly

			if ( empty($category) ) {

				$default_category = get_term( get_option( 'default_category' ), 'category' );

			}

		}

		$author = '';

		if ( strpos($permalink, '%author%') !== false ) {

			$authordata = get_userdata($post->post_author);

			$author = $authordata->user_nicename;

		}

		$date = explode(" ",date('Y m d H i s', $unixtime));

		$rewritereplace =

		array(

			$date[0],

			$date[1],

			$date[2],

			$date[3],

			$date[4],

			$date[5],

			$post->post_name,

			$post->ID,

			$category,

			$author,

			$post->post_name,

		);

		$permalink = home_url( str_replace($rewritecode, $rewritereplace, $permalink) );

		$permalink = user_trailingslashit($permalink, 'single');

	} else { // if they're not using the fancy permalink option

		$permalink = home_url('?p=' . $post->ID);

	}

	/**

	 *

	 * Only applies to posts with post_type of 'post'.

	 *

	 * @since 1.5.0

	 *

	 * @param string  $permalink The post's permalink.

	 * @param WP_Post $post      The post in question.

	 * @param bool    $leavename Whether to keep the post name.

	 */

	return apply_filters( 'post_link', $permalink, $post, $leavename );

}

/**

 *

 * @since 3.0.0

 *

 */

function get_post_permalink( $id = 0, $leavename = false, $sample = false ) {

	global $wp_rewrite;

	$post = get_post($id);

	if ( is_wp_error( $post ) )

		return $post;

	$post_link = $wp_rewrite->get_extra_permastruct($post->post_type);

	$slug = $post->post_name;

	$post_type = get_post_type_object($post->post_type);

	if ( $post_type->hierarchical ) {

	}

	if ( !empty($post_link) && ( !$draft_or_pending || $sample ) ) {

		if ( ! $leavename ) {

			$post_link = str_replace("%$post->post_type%", $slug, $post_link);

		}

		$post_link = home_url( user_trailingslashit($post_link) );

	} else {

		if ( $post_type->query_var && ( isset($post->post_status) && !$draft_or_pending ) )

			$post_link = add_query_arg($post_type->query_var, $slug, '');

		else

			$post_link = add_query_arg(array('post_type' => $post->post_type, 'p' => $post->ID), '');

		$post_link = home_url($post_link);

	}

	/**

	 *

	 * @since 3.0.0

	 *

	 * @param string  $post_link The post's permalink.

	 * @param WP_Post $post      The post in question.

	 * @param bool    $leavename Whether to keep the post name.

	 * @param bool    $sample    Is it a sample permalink.

	 */

	return apply_filters( 'post_type_link', $post_link, $post, $leavename, $sample );

}

/**

 *

 * Respects page_on_front. Use this one.

 *

 * @since 1.5.0

 *

 * @return string The page permalink.

 */

function get_page_link( $post = false, $leavename = false, $sample = false ) {

	$post = get_post( $post );

	if ( 'page' == get_option( 'show_on_front' ) && $post->ID == get_option( 'page_on_front' ) )

		$link = home_url('/');

	else

		$link = _get_page_link( $post, $leavename, $sample );

	/**

	 *

	 * @since 1.5.0

	 *

	 * @param string $link    The page's permalink.

	 * @param int    $post_id The ID of the page.

	 * @param bool   $sample  Is it a sample permalink.

	 */

	return apply_filters( 'page_link', $link, $post->ID, $sample );

}

/**

 *

 * Ignores page_on_front. Internal use only.

 *

 * @since 2.1.0

 * @access private

 *

 * @return string The page permalink.

 */

function _get_page_link( $post = false, $leavename = false, $sample = false ) {

	global $wp_rewrite;

	$post = get_post( $post );

	$draft_or_pending = in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft' ) );

	$link = $wp_rewrite->get_page_permastruct();

	if ( !empty($link) && ( ( isset($post->post_status) && !$draft_or_pending ) || $sample ) ) {

		if ( ! $leavename ) {

			$link = str_replace('%pagename%', get_page_uri( $post ), $link);

		}

		$link = home_url($link);

		$link = user_trailingslashit($link, 'page');

	} else {

		$link = home_url( '?page_id=' . $post->ID );

	}

	/**

	 *

	 * @since 2.1.0

	 *

	 * @param string $link    The page's permalink.

	 * @param int    $post_id The ID of the page.

	 */

	return apply_filters( '_get_page_link', $link, $post->ID );

}

/**

 *

 * This can be used in the WordPress Loop or outside of it.

 *

 * @since 2.0.0

 *

 * @return string The attachment permalink.

 */

function get_attachment_link( $post = null, $leavename = false ) {

	global $wp_rewrite;

	$link = false;

	$post = get_post( $post );

	$parent = ( $post->post_parent > 0 && $post->post_parent != $post->ID ) ? get_post( $post->post_parent ) : false;

	if ( $wp_rewrite->using_permalinks() && $parent ) {

		if ( 'page' == $parent->post_type )

			$parentlink = _get_page_link( $post->post_parent ); // Ignores page_on_front

		else

			$parentlink = get_permalink( $post->post_parent );

		if ( is_numeric($post->post_name) || false !== strpos(get_option('permalink_structure'), '%category%') )

			$name = 'attachment/' . $post->post_name; // <permalink>/<int>/ is paged so we use the explicit attachment marker

		else

			$name = $post->post_name;

		if ( strpos($parentlink, '?') === false )

			$link = user_trailingslashit( trailingslashit($parentlink) . '%postname%' );

		if ( ! $leavename )

			$link = str_replace( '%postname%', $name, $link );

	}

	if ( ! $link )

		$link = home_url( '/?attachment_id=' . $post->ID );

	/**

	 *

	 * @since 2.0.0

	 *

	 * @param string $link    The attachment's permalink.

	 * @param int    $post_id Attachment ID.

	 */

	return apply_filters( 'attachment_link', $link, $post->ID );

}

/**

 *

 * @since 1.5.0

 *

 * @param int|bool $year False for current year or year for permalink.

 * @return string The permalink for the specified year archive.

 */

	global $wp_rewrite;

	if ( !$year )

		$year = gmdate('Y', current_time('timestamp'));

	$yearlink = $wp_rewrite->get_year_permastruct();

	if ( !empty($yearlink) ) {

		$yearlink = str_replace('%year%', $year, $yearlink);

		$yearlink = home_url( user_trailingslashit( $yearlink, 'year' ) );

	} else {

		$yearlink = home_url( '?m=' . $year );

	}

	/**

	 *

	 * @since 1.5.0

	 *

	 * @param string $yearlink Permalink for the year archive.

	 * @param int    $year     Year for the archive.

	 */

	return apply_filters( 'year_link', $yearlink, $year );

}

/**

 *

 * @since 1.0.0

 *

 * @param bool|int $month False for current month. Integer of month.

 * @return string The permalink for the specified month and year archive.

 */

function get_month_link($year, $month) {

	global $wp_rewrite;

	if ( !$year )

		$year = gmdate('Y', current_time('timestamp'));

	if ( !$month )

		$month = gmdate('m', current_time('timestamp'));

	$monthlink = $wp_rewrite->get_month_permastruct();

	if ( !empty($monthlink) ) {

		$monthlink = str_replace('%year%', $year, $monthlink);

		$monthlink = str_replace('%monthnum%', zeroise(intval($month), 2), $monthlink);

		$monthlink = home_url( user_trailingslashit( $monthlink, 'month' ) );

	} else {

		$monthlink = home_url( '?m=' . $year . zeroise( $month, 2 ) );

	}

	/**

	 *

	 * @since 1.5.0

	 *

	 * @param string $monthlink Permalink for the month archive.

	 * @param int    $year      Year for the archive.