--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/link-template.php Wed Nov 06 03:21:17 2013 +0000
@@ -0,0 +1,2506 @@
+<?php
+/**
+ * WordPress Link Template Functions
+ *
+ * @package WordPress
+ * @subpackage Template
+ */
+
+/**
+ * Display the permalink for the current post.
+ *
+ * @since 1.2.0
+ * @uses apply_filters() Calls 'the_permalink' filter on the permalink string.
+ */
+function the_permalink() {
+ echo esc_url( apply_filters( 'the_permalink', get_permalink() ) );
+}
+
+/**
+ * Retrieve trailing slash string, if blog set for adding trailing slashes.
+ *
+ * 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
+ * 'user_trailingslashit' filter. Will remove trailing slash from string, if
+ * blog is not set to have them.
+ *
+ * @since 2.2.0
+ * @uses $wp_rewrite
+ *
+ * @param string $string URL with or without a trailing slash.
+ * @param string $type_of_url The type of URL being considered (e.g. single, category, etc) for use in the filter.
+ * @return string
+ */
+function user_trailingslashit($string, $type_of_url = '') {
+ global $wp_rewrite;
+ if ( $wp_rewrite->use_trailing_slashes )
+ $string = trailingslashit($string);
+ else
+ $string = untrailingslashit($string);
+
+ // Note that $type_of_url can be one of following:
+ // single, single_trackback, single_feed, single_paged, feed, category, page, year, month, day, paged, post_type_archive
+ $string = apply_filters('user_trailingslashit', $string, $type_of_url);
+ return $string;
+}
+
+/**
+ * Display permalink anchor for current post.
+ *
+ * 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
+ *
+ * @param string $mode Permalink mode can be either 'title', 'id', or default, which is 'id'.
+ */
+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;
+ }
+}
+
+/**
+ * Retrieve full permalink for current post or post ID.
+ *
+ * @since 1.0.0
+ *
+ * @param int|WP_Post $id Optional. Post ID or post object, defaults to the current post.
+ * @param bool $leavename Optional. Whether to keep post name or page name, defaults to false.
+ * @return string|bool The permalink URL or false if post does not exist.
+ */
+function get_permalink( $id = 0, $leavename = false ) {
+ $rewritecode = array(
+ '%year%',
+ '%monthnum%',
+ '%day%',
+ '%hour%',
+ '%minute%',
+ '%second%',
+ $leavename? '' : '%postname%',
+ '%post_id%',
+ '%category%',
+ '%author%',
+ $leavename? '' : '%pagename%',
+ );
+
+ if ( is_object($id) && isset($id->filter) && 'sample' == $id->filter ) {
+ $post = $id;
+ $sample = true;
+ } else {
+ $post = get_post($id);
+ $sample = false;
+ }
+
+ if ( empty($post->ID) )
+ return false;
+
+ if ( $post->post_type == 'page' )
+ return get_page_link($post->ID, $leavename, $sample);
+ elseif ( $post->post_type == 'attachment' )
+ return get_attachment_link( $post->ID, $leavename );
+ elseif ( in_array($post->post_type, get_post_types( array('_builtin' => false) ) ) )
+ return get_post_permalink($post->ID, $leavename, $sample);
+
+ $permalink = get_option('permalink_structure');
+
+ $permalink = apply_filters('pre_post_link', $permalink, $post, $leavename);
+
+ if ( '' != $permalink && !in_array($post->post_status, array('draft', 'pending', 'auto-draft')) ) {
+ $unixtime = strtotime($post->post_date);
+
+ $category = '';
+ if ( strpos($permalink, '%category%') !== false ) {
+ $cats = get_the_category($post->ID);
+ if ( $cats ) {
+ usort($cats, '_usort_terms_by_ID'); // order by ID
+ $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' );
+ $category = is_wp_error( $default_category ) ? '' : $default_category->slug;
+ }
+ }
+
+ $author = '';
+ if ( strpos($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);
+ }
+ return apply_filters('post_link', $permalink, $post, $leavename);
+}
+
+/**
+ * Retrieve the permalink for a post with a custom post type.
+ *
+ * @since 3.0.0
+ *
+ * @param int $id Optional. Post ID.
+ * @param bool $leavename Optional, defaults to false. Whether to keep post name.
+ * @param bool $sample Optional, defaults to false. Is it a sample permalink.
+ * @return string
+ */
+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;
+
+ $draft_or_pending = isset($post->post_status) && in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft' ) );
+
+ $post_type = get_post_type_object($post->post_type);
+
+ if ( !empty($post_link) && ( !$draft_or_pending || $sample ) ) {
+ if ( ! $leavename ) {
+ if ( $post_type->hierarchical )
+ $slug = get_page_uri($id);
+ $post_link = str_replace("%$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);
+ }
+
+ return apply_filters('post_type_link', $post_link, $post, $leavename, $sample);
+}
+
+/**
+ * Retrieve permalink from post ID.
+ *
+ * @since 1.0.0
+ *
+ * @param int $post_id Optional. Post ID.
+ * @param mixed $deprecated Not used.
+ * @return string
+ */
+function post_permalink( $post_id = 0, $deprecated = '' ) {
+ if ( !empty( $deprecated ) )
+ _deprecated_argument( __FUNCTION__, '1.3' );
+
+ return get_permalink($post_id);
+}
+
+/**
+ * Retrieve the permalink for current page or page ID.
+ *
+ * Respects page_on_front. Use this one.
+ *
+ * @since 1.5.0
+ *
+ * @param int|object $post Optional. Post ID or object.
+ * @param bool $leavename Optional, defaults to false. Whether to keep page name.
+ * @param bool $sample Optional, defaults to false. Is it a sample permalink.
+ * @return string
+ */
+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 );
+
+ return apply_filters( 'page_link', $link, $post->ID, $sample );
+}
+
+/**
+ * Retrieve the page permalink.
+ *
+ * Ignores page_on_front. Internal use only.
+ *
+ * @since 2.1.0
+ * @access private
+ *
+ * @param int|object $post Optional. Post ID or object.
+ * @param bool $leavename Optional. Leave name.
+ * @param bool $sample Optional. Sample permalink.
+ * @return string
+ */
+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 );
+ }
+
+ return apply_filters( '_get_page_link', $link, $post->ID );
+}
+
+/**
+ * Retrieve permalink for attachment.
+ *
+ * This can be used in the WordPress Loop or outside of it.
+ *
+ * @since 2.0.0
+ *
+ * @param int|object $post Optional. Post ID or object.
+ * @param bool $leavename Optional. Leave name.
+ * @return string
+ */
+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 );
+
+ return apply_filters( 'attachment_link', $link, $post->ID );
+}
+
+/**
+ * Retrieve the permalink for the year archives.
+ *
+ * @since 1.5.0
+ *
+ * @param int|bool $year False for current year or year for permalink.
+ * @return string
+ */
+function get_year_link($year) {
+ 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, $yearlink);
+ return apply_filters('year_link', home_url( user_trailingslashit($yearlink, 'year') ), $year);
+ } else {
+ return apply_filters('year_link', home_url('?m=' . $year), $year);
+ }
+}
+
+/**
+ * Retrieve the permalink for the month archives with year.
+ *
+ * @since 1.0.0
+ *
+ * @param bool|int $year False for current year. Integer of year.
+ * @param bool|int $month False for current month. Integer of month.
+ * @return string
+ */
+function get_month_link($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), $monthlink);
+ return apply_filters('month_link', home_url( user_trailingslashit($monthlink, 'month') ), $year, $month);
+ } else {
+ return apply_filters('month_link', home_url( '?m=' . $year . zeroise($month, 2) ), $year, $month);
+ }
+}
+
+/**
+ * Retrieve the permalink for the day archives with year and month.
+ *
+ * @since 1.0.0
+ *
+ * @param bool|int $year False for current year. Integer of year.
+ * @param bool|int $month False for current month. Integer of month.
+ * @param bool|int $day False for current day. Integer of day.
+ * @return string
+ */
+function get_day_link($year, $month, $day) {
+ global $wp_rewrite;
+ if ( !$year )
+ $year = gmdate('Y', current_time('timestamp'));
+ if ( !$month )
+ $month = gmdate('m', current_time('timestamp'));
+ if ( !$day )
+ $day = gmdate('j', current_time('timestamp'));
+
+ $daylink = $wp_rewrite->get_day_permastruct();
+ if ( !empty($daylink) ) {
+ $daylink = str_replace('%year%', $year, $daylink);
+ $daylink = str_replace('%monthnum%', zeroise(intval($month), 2), $daylink);
+ $daylink = str_replace('%day%', zeroise(intval($day), 2), $daylink);
+ return apply_filters('day_link', home_url( user_trailingslashit($daylink, 'day') ), $year, $month, $day);
+ } else {
+ return apply_filters('day_link', home_url( '?m=' . $year . zeroise($month, 2) . zeroise($day, 2) ), $year, $month, $day);
+ }
+}
+
+/**
+ * Display the permalink for the feed type.
+ *
+ * @since 3.0.0
+ *
+ * @param string $anchor The link's anchor text.
+ * @param string $feed Optional, defaults to default feed. Feed type.
+ */
+function the_feed_link( $anchor, $feed = '' ) {
+ $link = '<a href="' . esc_url( get_feed_link( $feed ) ) . '">' . $anchor . '</a>';
+ echo apply_filters( 'the_feed_link', $link, $feed );
+}
+
+/**
+ * Retrieve the permalink for the feed type.
+ *
+ * @since 1.5.0
+ *
+ * @param string $feed Optional, defaults to default feed. Feed type.
+ * @return string
+ */
+function get_feed_link($feed = '') {
+ global $wp_rewrite;
+
+ $permalink = $wp_rewrite->get_feed_permastruct();
+ if ( '' != $permalink ) {
+ if ( false !== strpos($feed, 'comments_') ) {
+ $feed = str_replace('comments_', '', $feed);
+ $permalink = $wp_rewrite->get_comment_feed_permastruct();
+ }
+
+ if ( get_default_feed() == $feed )
+ $feed = '';
+
+ $permalink = str_replace('%feed%', $feed, $permalink);
+ $permalink = preg_replace('#/+#', '/', "/$permalink");
+ $output = home_url( user_trailingslashit($permalink, 'feed') );
+ } else {
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ if ( false !== strpos($feed, 'comments_') )
+ $feed = str_replace('comments_', 'comments-', $feed);
+
+ $output = home_url("?feed={$feed}");
+ }
+
+ return apply_filters('feed_link', $output, $feed);
+}
+
+/**
+ * Retrieve the permalink for the post comments feed.
+ *
+ * @since 2.2.0
+ *
+ * @param int $post_id Optional. Post ID.
+ * @param string $feed Optional. Feed type.
+ * @return string
+ */
+function get_post_comments_feed_link($post_id = 0, $feed = '') {
+ $post_id = absint( $post_id );
+
+ if ( ! $post_id )
+ $post_id = get_the_ID();
+
+ if ( empty( $feed ) )
+ $feed = get_default_feed();
+
+ if ( '' != get_option('permalink_structure') ) {
+ if ( 'page' == get_option('show_on_front') && $post_id == get_option('page_on_front') )
+ $url = _get_page_link( $post_id );
+ else
+ $url = get_permalink($post_id);
+
+ $url = trailingslashit($url) . 'feed';
+ if ( $feed != get_default_feed() )
+ $url .= "/$feed";
+ $url = user_trailingslashit($url, 'single_feed');
+ } else {
+ $type = get_post_field('post_type', $post_id);
+ if ( 'page' == $type )
+ $url = add_query_arg( array( 'feed' => $feed, 'page_id' => $post_id ), home_url( '/' ) );
+ else
+ $url = add_query_arg( array( 'feed' => $feed, 'p' => $post_id ), home_url( '/' ) );
+ }
+
+ return apply_filters('post_comments_feed_link', $url);
+}
+
+/**
+ * Display the comment feed link for a post.
+ *
+ * Prints out the comment feed link for a post. Link text is placed in the
+ * anchor. If no link text is specified, default text is used. If no post ID is
+ * specified, the current post is used.
+ *
+ * @package WordPress
+ * @subpackage Feed
+ * @since 2.5.0
+ *
+ * @param string $link_text Descriptive text.
+ * @param int $post_id Optional post ID. Default to current post.
+ * @param string $feed Optional. Feed format.
+ * @return string Link to the comment feed for the current post.
+*/
+function post_comments_feed_link( $link_text = '', $post_id = '', $feed = '' ) {
+ $url = esc_url( get_post_comments_feed_link( $post_id, $feed ) );
+ if ( empty($link_text) )
+ $link_text = __('Comments Feed');
+
+ echo apply_filters( 'post_comments_feed_link_html', "<a href='$url'>$link_text</a>", $post_id, $feed );
+}
+
+/**
+ * Retrieve the feed link for a given author.
+ *
+ * Returns a link to the feed for all posts by a given author. A specific feed
+ * can be requested or left blank to get the default feed.
+ *
+ * @package WordPress
+ * @subpackage Feed
+ * @since 2.5.0
+ *
+ * @param int $author_id ID of an author.
+ * @param string $feed Optional. Feed type.
+ * @return string Link to the feed for the author specified by $author_id.
+*/
+function get_author_feed_link( $author_id, $feed = '' ) {
+ $author_id = (int) $author_id;
+ $permalink_structure = get_option('permalink_structure');
+
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ if ( '' == $permalink_structure ) {
+ $link = home_url("?feed=$feed&author=" . $author_id);
+ } else {
+ $link = get_author_posts_url($author_id);
+ if ( $feed == get_default_feed() )
+ $feed_link = 'feed';
+ else
+ $feed_link = "feed/$feed";
+
+ $link = trailingslashit($link) . user_trailingslashit($feed_link, 'feed');
+ }
+
+ $link = apply_filters('author_feed_link', $link, $feed);
+
+ return $link;
+}
+
+/**
+ * Retrieve the feed link for a category.
+ *
+ * Returns a link to the feed for all posts in a given category. A specific feed
+ * can be requested or left blank to get the default feed.
+ *
+ * @package WordPress
+ * @subpackage Feed
+ * @since 2.5.0
+ *
+ * @param int $cat_id ID of a category.
+ * @param string $feed Optional. Feed type.
+ * @return string Link to the feed for the category specified by $cat_id.
+*/
+function get_category_feed_link($cat_id, $feed = '') {
+ return get_term_feed_link($cat_id, 'category', $feed);
+}
+
+/**
+ * Retrieve the feed link for a term.
+ *
+ * Returns a link to the feed for all posts in a given term. A specific feed
+ * can be requested or left blank to get the default feed.
+ *
+ * @since 3.0
+ *
+ * @param int $term_id ID of a category.
+ * @param string $taxonomy Optional. Taxonomy of $term_id
+ * @param string $feed Optional. Feed type.
+ * @return string Link to the feed for the term specified by $term_id and $taxonomy.
+*/
+function get_term_feed_link( $term_id, $taxonomy = 'category', $feed = '' ) {
+ $term_id = ( int ) $term_id;
+
+ $term = get_term( $term_id, $taxonomy );
+
+ if ( empty( $term ) || is_wp_error( $term ) )
+ return false;
+
+ if ( empty( $feed ) )
+ $feed = get_default_feed();
+
+ $permalink_structure = get_option( 'permalink_structure' );
+
+ if ( '' == $permalink_structure ) {
+ if ( 'category' == $taxonomy ) {
+ $link = home_url("?feed=$feed&cat=$term_id");
+ }
+ elseif ( 'post_tag' == $taxonomy ) {
+ $link = home_url("?feed=$feed&tag=$term->slug");
+ } else {
+ $t = get_taxonomy( $taxonomy );
+ $link = home_url("?feed=$feed&$t->query_var=$term->slug");
+ }
+ } else {
+ $link = get_term_link( $term_id, $term->taxonomy );
+ if ( $feed == get_default_feed() )
+ $feed_link = 'feed';
+ else
+ $feed_link = "feed/$feed";
+
+ $link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' );
+ }
+
+ if ( 'category' == $taxonomy )
+ $link = apply_filters( 'category_feed_link', $link, $feed );
+ elseif ( 'post_tag' == $taxonomy )
+ $link = apply_filters( 'tag_feed_link', $link, $feed );
+ else
+ $link = apply_filters( 'taxonomy_feed_link', $link, $feed, $taxonomy );
+
+ return $link;
+}
+
+/**
+ * Retrieve permalink for feed of tag.
+ *
+ * @since 2.3.0
+ *
+ * @param int $tag_id Tag ID.
+ * @param string $feed Optional. Feed type.
+ * @return string
+ */
+function get_tag_feed_link($tag_id, $feed = '') {
+ return get_term_feed_link($tag_id, 'post_tag', $feed);
+}
+
+/**
+ * Retrieve edit tag link.
+ *
+ * @since 2.7.0
+ *
+ * @param int $tag_id Tag ID
+ * @param string $taxonomy Taxonomy
+ * @return string
+ */
+function get_edit_tag_link( $tag_id, $taxonomy = 'post_tag' ) {
+ return apply_filters( 'get_edit_tag_link', get_edit_term_link( $tag_id, $taxonomy ) );
+}
+
+/**
+ * Display or retrieve edit tag link with formatting.
+ *
+ * @since 2.7.0
+ *
+ * @param string $link Optional. Anchor text.
+ * @param string $before Optional. Display before edit link.
+ * @param string $after Optional. Display after edit link.
+ * @param object $tag Tag object.
+ * @return string HTML content.
+ */
+function edit_tag_link( $link = '', $before = '', $after = '', $tag = null ) {
+ $link = edit_term_link( $link, '', '', $tag, false );
+ echo $before . apply_filters( 'edit_tag_link', $link ) . $after;
+}
+
+/**
+ * Retrieve edit term url.
+ *
+ * @since 3.1.0
+ *
+ * @param int $term_id Term ID
+ * @param string $taxonomy Taxonomy
+ * @param string $object_type The object type
+ * @return string
+ */
+function get_edit_term_link( $term_id, $taxonomy, $object_type = '' ) {
+ $tax = get_taxonomy( $taxonomy );
+ if ( !current_user_can( $tax->cap->edit_terms ) )
+ return;
+
+ $term = get_term( $term_id, $taxonomy );
+
+ $args = array(
+ 'action' => 'edit',
+ 'taxonomy' => $taxonomy,
+ 'tag_ID' => $term->term_id,
+ );
+
+ if ( $object_type )
+ $args['post_type'] = $object_type;
+
+ $location = add_query_arg( $args, admin_url( 'edit-tags.php' ) );
+
+ return apply_filters( 'get_edit_term_link', $location, $term_id, $taxonomy, $object_type );
+}
+
+/**
+ * Display or retrieve edit term link with formatting.
+ *
+ * @since 3.1.0
+ *
+ * @param string $link Optional. Anchor text.
+ * @param string $before Optional. Display before edit link.
+ * @param string $after Optional. Display after edit link.
+ * @param object $term Term object.
+ * @return string HTML content.
+ */
+function edit_term_link( $link = '', $before = '', $after = '', $term = null, $echo = true ) {
+ if ( is_null( $term ) )
+ $term = get_queried_object();
+
+ if ( ! $term )
+ return;
+
+ $tax = get_taxonomy( $term->taxonomy );
+ if ( ! current_user_can( $tax->cap->edit_terms ) )
+ return;
+
+ if ( empty( $link ) )
+ $link = __('Edit This');
+
+ $link = '<a href="' . get_edit_term_link( $term->term_id, $term->taxonomy ) . '">' . $link . '</a>';
+ $link = $before . apply_filters( 'edit_term_link', $link, $term->term_id ) . $after;
+
+ if ( $echo )
+ echo $link;
+ else
+ return $link;
+}
+
+/**
+* Retrieve permalink for search.
+*
+* @since 3.0.0
+* @param string $query Optional. The query string to use. If empty the current query is used.
+* @return string
+*/
+function get_search_link( $query = '' ) {
+ global $wp_rewrite;
+
+ if ( empty($query) )
+ $search = get_search_query( false );
+ else
+ $search = stripslashes($query);
+
+ $permastruct = $wp_rewrite->get_search_permastruct();
+
+ if ( empty( $permastruct ) ) {
+ $link = home_url('?s=' . urlencode($search) );
+ } else {
+ $search = urlencode($search);
+ $search = str_replace('%2F', '/', $search); // %2F(/) is not valid within a URL, send it unencoded.
+ $link = str_replace( '%search%', $search, $permastruct );
+ $link = home_url( user_trailingslashit( $link, 'search' ) );
+ }
+
+ return apply_filters( 'search_link', $link, $search );
+}
+
+/**
+ * Retrieve the permalink for the feed of the search results.
+ *
+ * @since 2.5.0
+ *
+ * @param string $search_query Optional. Search query.
+ * @param string $feed Optional. Feed type.
+ * @return string
+ */
+function get_search_feed_link($search_query = '', $feed = '') {
+ global $wp_rewrite;
+ $link = get_search_link($search_query);
+
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ $permastruct = $wp_rewrite->get_search_permastruct();
+
+ if ( empty($permastruct) ) {
+ $link = add_query_arg('feed', $feed, $link);
+ } else {
+ $link = trailingslashit($link);
+ $link .= "feed/$feed/";
+ }
+
+ $link = apply_filters('search_feed_link', $link, $feed, 'posts');
+
+ return $link;
+}
+
+/**
+ * Retrieve the permalink for the comments feed of the search results.
+ *
+ * @since 2.5.0
+ *
+ * @param string $search_query Optional. Search query.
+ * @param string $feed Optional. Feed type.
+ * @return string
+ */
+function get_search_comments_feed_link($search_query = '', $feed = '') {
+ global $wp_rewrite;
+
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ $link = get_search_feed_link($search_query, $feed);
+
+ $permastruct = $wp_rewrite->get_search_permastruct();
+
+ if ( empty($permastruct) )
+ $link = add_query_arg('feed', 'comments-' . $feed, $link);
+ else
+ $link = add_query_arg('withcomments', 1, $link);
+
+ $link = apply_filters('search_feed_link', $link, $feed, 'comments');
+
+ return $link;
+}
+
+/**
+ * Retrieve the permalink for a post type archive.
+ *
+ * @since 3.1.0
+ *
+ * @param string $post_type Post type
+ * @return string
+ */
+function get_post_type_archive_link( $post_type ) {
+ global $wp_rewrite;
+ if ( ! $post_type_obj = get_post_type_object( $post_type ) )
+ return false;
+
+ if ( ! $post_type_obj->has_archive )
+ return false;
+
+ if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) ) {
+ $struct = ( true === $post_type_obj->has_archive ) ? $post_type_obj->rewrite['slug'] : $post_type_obj->has_archive;
+ if ( $post_type_obj->rewrite['with_front'] )
+ $struct = $wp_rewrite->front . $struct;
+ else
+ $struct = $wp_rewrite->root . $struct;
+ $link = home_url( user_trailingslashit( $struct, 'post_type_archive' ) );
+ } else {
+ $link = home_url( '?post_type=' . $post_type );
+ }
+
+ return apply_filters( 'post_type_archive_link', $link, $post_type );
+}
+
+/**
+ * Retrieve the permalink for a post type archive feed.
+ *
+ * @since 3.1.0
+ *
+ * @param string $post_type Post type
+ * @param string $feed Optional. Feed type
+ * @return string
+ */
+function get_post_type_archive_feed_link( $post_type, $feed = '' ) {
+ $default_feed = get_default_feed();
+ if ( empty( $feed ) )
+ $feed = $default_feed;
+
+ if ( ! $link = get_post_type_archive_link( $post_type ) )
+ return false;
+
+ $post_type_obj = get_post_type_object( $post_type );
+ if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) && $post_type_obj->rewrite['feeds'] ) {
+ $link = trailingslashit( $link );
+ $link .= 'feed/';
+ if ( $feed != $default_feed )
+ $link .= "$feed/";
+ } else {
+ $link = add_query_arg( 'feed', $feed, $link );
+ }
+
+ return apply_filters( 'post_type_archive_feed_link', $link, $feed );
+}
+
+/**
+ * Retrieve edit posts link for post.
+ *
+ * Can be used within the WordPress loop or outside of it. Can be used with
+ * pages, posts, attachments, and revisions.
+ *
+ * @since 2.3.0
+ *
+ * @param int $id Optional. Post ID.
+ * @param string $context Optional, defaults to display. How to write the '&', defaults to '&'.
+ * @return string
+ */
+function get_edit_post_link( $id = 0, $context = 'display' ) {
+ if ( ! $post = get_post( $id ) )
+ return;
+
+ if ( 'revision' === $post->post_type )
+ $action = '';
+ elseif ( 'display' == $context )
+ $action = '&action=edit';
+ else
+ $action = '&action=edit';
+
+ $post_type_object = get_post_type_object( $post->post_type );
+ if ( !$post_type_object )
+ return;
+
+ if ( !current_user_can( 'edit_post', $post->ID ) )
+ return;
+
+ return apply_filters( 'get_edit_post_link', admin_url( sprintf($post_type_object->_edit_link . $action, $post->ID) ), $post->ID, $context );
+}
+
+/**
+ * Display edit post link for post.
+ *
+ * @since 1.0.0
+ *
+ * @param string $link Optional. Anchor text.
+ * @param string $before Optional. Display before edit link.
+ * @param string $after Optional. Display after edit link.
+ * @param int $id Optional. Post ID.
+ */
+function edit_post_link( $link = null, $before = '', $after = '', $id = 0 ) {
+ if ( !$post = get_post( $id ) )
+ return;
+
+ if ( !$url = get_edit_post_link( $post->ID ) )
+ return;
+
+ if ( null === $link )
+ $link = __('Edit This');
+
+ $post_type_obj = get_post_type_object( $post->post_type );
+ $link = '<a class="post-edit-link" href="' . $url . '">' . $link . '</a>';
+ echo $before . apply_filters( 'edit_post_link', $link, $post->ID ) . $after;
+}
+
+/**
+ * Retrieve delete posts link for post.
+ *
+ * Can be used within the WordPress loop or outside of it, with any post type.
+ *
+ * @since 2.9.0
+ *
+ * @param int $id Optional. Post ID.
+ * @param string $deprecated Not used.
+ * @param bool $force_delete Whether to bypass trash and force deletion. Default is false.
+ * @return string
+ */
+function get_delete_post_link( $id = 0, $deprecated = '', $force_delete = false ) {
+ if ( ! empty( $deprecated ) )
+ _deprecated_argument( __FUNCTION__, '3.0' );
+
+ if ( !$post = get_post( $id ) )
+ return;
+
+ $post_type_object = get_post_type_object( $post->post_type );
+ if ( !$post_type_object )
+ return;
+
+ if ( !current_user_can( 'delete_post', $post->ID ) )
+ return;
+
+ $action = ( $force_delete || !EMPTY_TRASH_DAYS ) ? 'delete' : 'trash';
+
+ $delete_link = add_query_arg( 'action', $action, admin_url( sprintf( $post_type_object->_edit_link, $post->ID ) ) );
+
+ return apply_filters( 'get_delete_post_link', wp_nonce_url( $delete_link, "$action-post_{$post->ID}" ), $post->ID, $force_delete );
+}
+
+/**
+ * Retrieve edit comment link.
+ *
+ * @since 2.3.0
+ *
+ * @param int $comment_id Optional. Comment ID.
+ * @return string
+ */
+function get_edit_comment_link( $comment_id = 0 ) {
+ $comment = get_comment( $comment_id );
+
+ if ( !current_user_can( 'edit_comment', $comment->comment_ID ) )
+ return;
+
+ $location = admin_url('comment.php?action=editcomment&c=') . $comment->comment_ID;
+ return apply_filters( 'get_edit_comment_link', $location );
+}
+
+/**
+ * Display or retrieve edit comment link with formatting.
+ *
+ * @since 1.0.0
+ *
+ * @param string $link Optional. Anchor text.
+ * @param string $before Optional. Display before edit link.
+ * @param string $after Optional. Display after edit link.
+ * @return string|null HTML content, if $echo is set to false.
+ */
+function edit_comment_link( $link = null, $before = '', $after = '' ) {
+ global $comment;
+
+ if ( !current_user_can( 'edit_comment', $comment->comment_ID ) )
+ return;
+
+ if ( null === $link )
+ $link = __('Edit This');
+
+ $link = '<a class="comment-edit-link" href="' . get_edit_comment_link( $comment->comment_ID ) . '">' . $link . '</a>';
+ echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID ) . $after;
+}
+
+/**
+ * Display edit bookmark (literally a URL external to blog) link.
+ *
+ * @since 2.7.0
+ *
+ * @param int $link Optional. Bookmark ID.
+ * @return string
+ */
+function get_edit_bookmark_link( $link = 0 ) {
+ $link = get_bookmark( $link );
+
+ if ( !current_user_can('manage_links') )
+ return;
+
+ $location = admin_url('link.php?action=edit&link_id=') . $link->link_id;
+ return apply_filters( 'get_edit_bookmark_link', $location, $link->link_id );
+}
+
+/**
+ * Display edit bookmark (literally a URL external to blog) link anchor content.
+ *
+ * @since 2.7.0
+ *
+ * @param string $link Optional. Anchor text.
+ * @param string $before Optional. Display before edit link.
+ * @param string $after Optional. Display after edit link.
+ * @param int $bookmark Optional. Bookmark ID.
+ */
+function edit_bookmark_link( $link = '', $before = '', $after = '', $bookmark = null ) {
+ $bookmark = get_bookmark($bookmark);
+
+ if ( !current_user_can('manage_links') )
+ return;
+
+ if ( empty($link) )
+ $link = __('Edit This');
+
+ $link = '<a href="' . get_edit_bookmark_link( $bookmark ) . '">' . $link . '</a>';
+ echo $before . apply_filters( 'edit_bookmark_link', $link, $bookmark->link_id ) . $after;
+}
+
+/**
+ * Retrieve edit user link
+ *
+ * @since 3.5.0
+ *
+ * @param int $user_id Optional. User ID. Defaults to the current user.
+ * @return string URL to edit user page or empty string.
+ */
+function get_edit_user_link( $user_id = null ) {
+ if ( ! $user_id )
+ $user_id = get_current_user_id();
+
+ if ( empty( $user_id ) || ! current_user_can( 'edit_user', $user_id ) )
+ return '';
+
+ $user = get_userdata( $user_id );
+
+ if ( ! $user )
+ return '';
+
+ if ( get_current_user_id() == $user->ID )
+ $link = get_edit_profile_url( $user->ID );
+ else
+ $link = add_query_arg( 'user_id', $user->ID, self_admin_url( 'user-edit.php' ) );
+
+ return apply_filters( 'get_edit_user_link', $link, $user->ID );
+}
+
+// Navigation links
+
+/**
+ * Retrieve previous post that is adjacent to current post.
+ *
+ * @since 1.5.0
+ *
+ * @param bool $in_same_cat Optional. Whether post should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ * @return mixed Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists.
+ */
+function get_previous_post($in_same_cat = false, $excluded_categories = '') {
+ return get_adjacent_post($in_same_cat, $excluded_categories);
+}
+
+/**
+ * Retrieve next post that is adjacent to current post.
+ *
+ * @since 1.5.0
+ *
+ * @param bool $in_same_cat Optional. Whether post should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ * @return mixed Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists.
+ */
+function get_next_post($in_same_cat = false, $excluded_categories = '') {
+ return get_adjacent_post($in_same_cat, $excluded_categories, false);
+}
+
+/**
+ * Retrieve adjacent post.
+ *
+ * Can either be next or previous post.
+ *
+ * @since 2.5.0
+ *
+ * @param bool $in_same_cat Optional. Whether post should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ * @param bool $previous Optional. Whether to retrieve previous post.
+ * @return mixed Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists.
+ */
+function get_adjacent_post( $in_same_cat = false, $excluded_categories = '', $previous = true ) {
+ global $wpdb;
+
+ if ( ! $post = get_post() )
+ return null;
+
+ $current_post_date = $post->post_date;
+
+ $join = '';
+ $posts_in_ex_cats_sql = '';
+ if ( $in_same_cat || ! empty( $excluded_categories ) ) {
+ $join = " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id";
+
+ if ( $in_same_cat ) {
+ if ( ! is_object_in_taxonomy( $post->post_type, 'category' ) )
+ return '';
+ $cat_array = wp_get_object_terms($post->ID, 'category', array('fields' => 'ids'));
+ if ( ! $cat_array || is_wp_error( $cat_array ) )
+ return '';
+ $join .= " AND tt.taxonomy = 'category' AND tt.term_id IN (" . implode(',', $cat_array) . ")";
+ }
+
+ $posts_in_ex_cats_sql = "AND tt.taxonomy = 'category'";
+ if ( ! empty( $excluded_categories ) ) {
+ if ( ! is_array( $excluded_categories ) ) {
+ // back-compat, $excluded_categories used to be IDs separated by " and "
+ if ( strpos( $excluded_categories, ' and ' ) !== false ) {
+ _deprecated_argument( __FUNCTION__, '3.3', sprintf( __( 'Use commas instead of %s to separate excluded categories.' ), "'and'" ) );
+ $excluded_categories = explode( ' and ', $excluded_categories );
+ } else {
+ $excluded_categories = explode( ',', $excluded_categories );
+ }
+ }
+
+ $excluded_categories = array_map( 'intval', $excluded_categories );
+
+ if ( ! empty( $cat_array ) ) {
+ $excluded_categories = array_diff($excluded_categories, $cat_array);
+ $posts_in_ex_cats_sql = '';
+ }
+
+ if ( !empty($excluded_categories) ) {
+ $posts_in_ex_cats_sql = " AND tt.taxonomy = 'category' AND tt.term_id NOT IN (" . implode($excluded_categories, ',') . ')';
+ }
+ }
+ }
+
+ $adjacent = $previous ? 'previous' : 'next';
+ $op = $previous ? '<' : '>';
+ $order = $previous ? 'DESC' : 'ASC';
+
+ $join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_cat, $excluded_categories );
+ $where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare("WHERE p.post_date $op %s AND p.post_type = %s AND p.post_status = 'publish' $posts_in_ex_cats_sql", $current_post_date, $post->post_type), $in_same_cat, $excluded_categories );
+ $sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1" );
+
+ $query = "SELECT p.ID FROM $wpdb->posts AS p $join $where $sort";
+ $query_key = 'adjacent_post_' . md5($query);
+ $result = wp_cache_get($query_key, 'counts');
+ if ( false !== $result ) {
+ if ( $result )
+ $result = get_post( $result );
+ return $result;
+ }
+
+ $result = $wpdb->get_var( $query );
+ if ( null === $result )
+ $result = '';
+
+ wp_cache_set($query_key, $result, 'counts');
+
+ if ( $result )
+ $result = get_post( $result );
+
+ return $result;
+}
+
+/**
+ * Get adjacent post relational link.
+ *
+ * Can either be next or previous post relational link.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_cat Optional. Whether link should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ * @param bool $previous Optional, default is true. Whether to display link to previous or next post.
+ * @return string
+ */
+function get_adjacent_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '', $previous = true) {
+ if ( $previous && is_attachment() && $post = get_post() )
+ $post = get_post( $post->post_parent );
+ else
+ $post = get_adjacent_post( $in_same_cat, $excluded_categories, $previous );
+
+ if ( empty($post) )
+ return;
+
+ $post_title = the_title_attribute( array( 'echo' => false, 'post' => $post ) );
+
+ if ( empty( $post_title ) )
+ $post_title = $previous ? __('Previous Post') : __('Next Post');
+
+ $date = mysql2date(get_option('date_format'), $post->post_date);
+
+ $title = str_replace('%title', $post_title, $title);
+ $title = str_replace('%date', $date, $title);
+
+ $link = $previous ? "<link rel='prev' title='" : "<link rel='next' title='";
+ $link .= esc_attr( $title );
+ $link .= "' href='" . get_permalink($post) . "' />\n";
+
+ $adjacent = $previous ? 'previous' : 'next';
+ return apply_filters( "{$adjacent}_post_rel_link", $link );
+}
+
+/**
+ * Display relational links for the posts adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_cat Optional. Whether link should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ */
+function adjacent_posts_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
+ echo get_adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', true);
+ echo get_adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', false);
+}
+
+/**
+ * Display relational links for the posts adjacent to the current post for single post pages.
+ *
+ * This is meant to be attached to actions like 'wp_head'. Do not call this directly in plugins or theme templates.
+ * @since 3.0.0
+ *
+ */
+function adjacent_posts_rel_link_wp_head() {
+ if ( !is_singular() || is_attachment() )
+ return;
+ adjacent_posts_rel_link();
+}
+
+/**
+ * Display relational link for the next post adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_cat Optional. Whether link should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ */
+function next_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
+ echo get_adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', false);
+}
+
+/**
+ * Display relational link for the previous post adjacent to the current post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_cat Optional. Whether link should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ */
+function prev_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
+ echo get_adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', true);
+}
+
+/**
+ * Retrieve boundary post.
+ *
+ * Boundary being either the first or last post by publish date within the constraints specified
+ * by $in_same_cat or $excluded_categories.
+ *
+ * @since 2.8.0
+ *
+ * @param bool $in_same_cat Optional. Whether returned post should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ * @param bool $start Optional. Whether to retrieve first or last post.
+ * @return object
+ */
+function get_boundary_post( $in_same_cat = false, $excluded_categories = '', $start = true ) {
+ $post = get_post();
+ if ( ! $post || ! is_single() || is_attachment() )
+ return null;
+
+ $cat_array = array();
+ if( ! is_array( $excluded_categories ) )
+ $excluded_categories = explode( ',', $excluded_categories );
+
+ if ( $in_same_cat || ! empty( $excluded_categories ) ) {
+ if ( $in_same_cat )
+ $cat_array = wp_get_object_terms( $post->ID, 'category', array( 'fields' => 'ids' ) );
+
+ if ( ! empty( $excluded_categories ) ) {
+ $excluded_categories = array_map( 'intval', $excluded_categories );
+ $excluded_categories = array_diff( $excluded_categories, $cat_array );
+
+ $inverse_cats = array();
+ foreach ( $excluded_categories as $excluded_category )
+ $inverse_cats[] = $excluded_category * -1;
+ $excluded_categories = $inverse_cats;
+ }
+ }
+
+ $categories = implode( ',', array_merge( $cat_array, $excluded_categories ) );
+
+ $order = $start ? 'ASC' : 'DESC';
+
+ return get_posts( array('numberposts' => 1, 'category' => $categories, 'order' => $order, 'update_post_term_cache' => false, 'update_post_meta_cache' => false) );
+}
+
+/*
+ * Get previous post link that is adjacent to the current post.
+ *
+ * @since 3.7.0
+ *
+ * @param string $format Optional. Link anchor format.
+ * @param string $link Optional. Link permalink format.
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @return string
+ */
+function get_previous_post_link( $format = '« %link', $link = '%title', $in_same_cat = false, $excluded_categories = '' ) {
+ return get_adjacent_post_link( $format, $link, $in_same_cat, $excluded_categories, true );
+}
+
+/**
+ * Display previous post link that is adjacent to the current post.
+ *
+ * @since 1.5.0
+ * @uses get_previous_post_link()
+ *
+ * @param string $format Optional. Link anchor format.
+ * @param string $link Optional. Link permalink format.
+ * @param bool $in_same_cat Optional. Whether link should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ */
+function previous_post_link( $format = '« %link', $link = '%title', $in_same_cat = false, $excluded_categories = '' ) {
+ echo get_previous_post_link( $format, $link, $in_same_cat, $excluded_categories );
+}
+
+/**
+ * Get previous post link that is adjacent to the current post.
+ *
+ * @since 3.7.0
+ * @uses get_next_post_link()
+ *
+ * @param string $format Optional. Link anchor format.
+ * @param string $link Optional. Link permalink format.
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @return string
+ */
+function get_next_post_link( $format = '« %link', $link = '%title', $in_same_cat = false, $excluded_categories = '' ) {
+ return get_adjacent_post_link( $format, $link, $in_same_cat, $excluded_categories, false );
+}
+
+/**
+ * Display next post link that is adjacent to the current post.
+ *
+ * @since 1.5.0
+ *
+ * @param string $format Optional. Link anchor format.
+ * @param string $link Optional. Link permalink format.
+ * @param bool $in_same_cat Optional. Whether link should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ */
+function next_post_link( $format = '%link »', $link = '%title', $in_same_cat = false, $excluded_categories = '' ) {
+ echo get_next_post_link( $format, $link, $in_same_cat, $excluded_categories );
+}
+
+/**
+ * Get adjacent post link.
+ *
+ * Can be either next post link or previous.
+ *
+ * @since 3.7.0
+ *
+ * @param string $format Link anchor format.
+ * @param string $link Link permalink format.
+ * @param bool $in_same_cat Optional. Whether link should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ * @param bool $previous Optional, default is true. Whether to display link to previous or next post.
+ * @return string
+ */
+function get_adjacent_post_link( $format, $link, $in_same_cat = false, $excluded_categories = '', $previous = true ) {
+ if ( $previous && is_attachment() )
+ $post = get_post( get_post()->post_parent );
+ else
+ $post = get_adjacent_post( $in_same_cat, $excluded_categories, $previous );
+
+ if ( ! $post ) {
+ $output = '';
+ } else {
+ $title = $post->post_title;
+
+ if ( empty( $post->post_title ) )
+ $title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
+
+ /** This filter is documented in wp-includes/post-template.php */
+ $title = apply_filters( 'the_title', $title, $post->ID );
+ $date = mysql2date( get_option( 'date_format' ), $post->post_date );
+ $rel = $previous ? 'prev' : 'next';
+
+ $string = '<a href="' . get_permalink( $post ) . '" rel="'.$rel.'">';
+ $inlink = str_replace( '%title', $title, $link );
+ $inlink = str_replace( '%date', $date, $inlink );
+ $inlink = $string . $inlink . '</a>';
+
+ $output = str_replace( '%link', $inlink, $format );
+ }
+
+ $adjacent = $previous ? 'previous' : 'next';
+
+ return apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post );
+}
+
+/**
+ * Display adjacent post link.
+ *
+ * Can be either next post link or previous.
+ *
+ * @since 2.5.0
+ * @uses get_adjacent_post_link()
+ *
+ * @param string $format Link anchor format.
+ * @param string $link Link permalink format.
+ * @param bool $in_same_cat Optional. Whether link should be in a same category.
+ * @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
+ * @param bool $previous Optional, default is true. Whether to display link to previous or next post.
+ * @return string
+ */
+function adjacent_post_link( $format, $link, $in_same_cat = false, $excluded_categories = '', $previous = true ) {
+ echo get_adjacent_post_link( $format, $link, $in_same_cat, $excluded_categories, $previous );
+}
+
+/**
+ * Retrieve links for page numbers.
+ *
+ * @since 1.5.0
+ *
+ * @param int $pagenum Optional. Page ID.
+ * @param bool $escape Optional. Whether to escape the URL for display, with esc_url(). Defaults to true.
+* Otherwise, prepares the URL with esc_url_raw().
+ * @return string
+ */
+function get_pagenum_link($pagenum = 1, $escape = true ) {
+ global $wp_rewrite;
+
+ $pagenum = (int) $pagenum;
+
+ $request = remove_query_arg( 'paged' );
+
+ $home_root = parse_url(home_url());
+ $home_root = ( isset($home_root['path']) ) ? $home_root['path'] : '';
+ $home_root = preg_quote( $home_root, '|' );
+
+ $request = preg_replace('|^'. $home_root . '|i', '', $request);
+ $request = preg_replace('|^/+|', '', $request);
+
+ if ( !$wp_rewrite->using_permalinks() || is_admin() ) {
+ $base = trailingslashit( get_bloginfo( 'url' ) );
+
+ if ( $pagenum > 1 ) {
+ $result = add_query_arg( 'paged', $pagenum, $base . $request );
+ } else {
+ $result = $base . $request;
+ }
+ } else {
+ $qs_regex = '|\?.*?$|';
+ preg_match( $qs_regex, $request, $qs_match );
+
+ if ( !empty( $qs_match[0] ) ) {
+ $query_string = $qs_match[0];
+ $request = preg_replace( $qs_regex, '', $request );
+ } else {
+ $query_string = '';
+ }
+
+ $request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request);
+ $request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request);
+ $request = ltrim($request, '/');
+
+ $base = trailingslashit( get_bloginfo( 'url' ) );
+
+ if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) )
+ $base .= $wp_rewrite->index . '/';
+
+ if ( $pagenum > 1 ) {
+ $request = ( ( !empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( $wp_rewrite->pagination_base . "/" . $pagenum, 'paged' );
+ }
+
+ $result = $base . $request . $query_string;
+ }
+
+ $result = apply_filters('get_pagenum_link', $result);
+
+ if ( $escape )
+ return esc_url( $result );
+ else
+ return esc_url_raw( $result );
+}
+
+/**
+ * Retrieve next posts page link.
+ *
+ * Backported from 2.1.3 to 2.0.10.
+ *
+ * @since 2.0.10
+ *
+ * @param int $max_page Optional. Max pages.
+ * @return string
+ */
+function get_next_posts_page_link($max_page = 0) {
+ global $paged;
+
+ if ( !is_single() ) {
+ if ( !$paged )
+ $paged = 1;
+ $nextpage = intval($paged) + 1;
+ if ( !$max_page || $max_page >= $nextpage )
+ return get_pagenum_link($nextpage);
+ }
+}
+
+/**
+ * Display or return the next posts page link.
+ *
+ * @since 0.71
+ *
+ * @param int $max_page Optional. Max pages.
+ * @param boolean $echo Optional. Echo or return;
+ */
+function next_posts( $max_page = 0, $echo = true ) {
+ $output = esc_url( get_next_posts_page_link( $max_page ) );
+
+ if ( $echo )
+ echo $output;
+ else
+ return $output;
+}
+
+/**
+ * Return the next posts page link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $label Content for link text.
+ * @param int $max_page Optional. Max pages.
+ * @return string|null
+ */
+function get_next_posts_link( $label = null, $max_page = 0 ) {
+ global $paged, $wp_query;
+
+ if ( !$max_page )
+ $max_page = $wp_query->max_num_pages;
+
+ if ( !$paged )
+ $paged = 1;
+
+ $nextpage = intval($paged) + 1;
+
+ if ( null === $label )
+ $label = __( 'Next Page »' );
+
+ if ( !is_single() && ( $nextpage <= $max_page ) ) {
+ $attr = apply_filters( 'next_posts_link_attributes', '' );
+ return '<a href="' . next_posts( $max_page, false ) . "\" $attr>" . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $label) . '</a>';
+ }
+}
+
+/**
+ * Display the next posts page link.
+ *
+ * @since 0.71
+ * @uses get_next_posts_link()
+ *
+ * @param string $label Content for link text.
+ * @param int $max_page Optional. Max pages.
+ */
+function next_posts_link( $label = null, $max_page = 0 ) {
+ echo get_next_posts_link( $label, $max_page );
+}
+
+/**
+ * Retrieve previous posts page link.
+ *
+ * Will only return string, if not on a single page or post.
+ *
+ * Backported to 2.0.10 from 2.1.3.
+ *
+ * @since 2.0.10
+ *
+ * @return string|null
+ */
+function get_previous_posts_page_link() {
+ global $paged;
+
+ if ( !is_single() ) {
+ $nextpage = intval($paged) - 1;
+ if ( $nextpage < 1 )
+ $nextpage = 1;
+ return get_pagenum_link($nextpage);
+ }
+}
+
+/**
+ * Display or return the previous posts page link.
+ *
+ * @since 0.71
+ *
+ * @param boolean $echo Optional. Echo or return;
+ */
+function previous_posts( $echo = true ) {
+ $output = esc_url( get_previous_posts_page_link() );
+
+ if ( $echo )
+ echo $output;
+ else
+ return $output;
+}
+
+/**
+ * Return the previous posts page link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $label Optional. Previous page link text.
+ * @return string|null
+ */
+function get_previous_posts_link( $label = null ) {
+ global $paged;
+
+ if ( null === $label )
+ $label = __( '« Previous Page' );
+
+ if ( !is_single() && $paged > 1 ) {
+ $attr = apply_filters( 'previous_posts_link_attributes', '' );
+ return '<a href="' . previous_posts( false ) . "\" $attr>". preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) .'</a>';
+ }
+}
+
+/**
+ * Display the previous posts page link.
+ *
+ * @since 0.71
+ * @uses get_previous_posts_link()
+ *
+ * @param string $label Optional. Previous page link text.
+ */
+function previous_posts_link( $label = null ) {
+ echo get_previous_posts_link( $label );
+}
+
+/**
+ * Return post pages link navigation for previous and next pages.
+ *
+ * @since 2.8
+ *
+ * @param string|array $args Optional args.
+ * @return string The posts link navigation.
+ */
+function get_posts_nav_link( $args = array() ) {
+ global $wp_query;
+
+ $return = '';
+
+ if ( !is_singular() ) {
+ $defaults = array(
+ 'sep' => ' — ',
+ 'prelabel' => __('« Previous Page'),
+ 'nxtlabel' => __('Next Page »'),
+ );
+ $args = wp_parse_args( $args, $defaults );
+
+ $max_num_pages = $wp_query->max_num_pages;
+ $paged = get_query_var('paged');
+
+ //only have sep if there's both prev and next results
+ if ($paged < 2 || $paged >= $max_num_pages) {
+ $args['sep'] = '';
+ }
+
+ if ( $max_num_pages > 1 ) {
+ $return = get_previous_posts_link($args['prelabel']);
+ $return .= preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $args['sep']);
+ $return .= get_next_posts_link($args['nxtlabel']);
+ }
+ }
+ return $return;
+
+}
+
+/**
+ * Display post pages link navigation for previous and next pages.
+ *
+ * @since 0.71
+ *
+ * @param string $sep Optional. Separator for posts navigation links.
+ * @param string $prelabel Optional. Label for previous pages.
+ * @param string $nxtlabel Optional Label for next pages.
+ */
+function posts_nav_link( $sep = '', $prelabel = '', $nxtlabel = '' ) {
+ $args = array_filter( compact('sep', 'prelabel', 'nxtlabel') );
+ echo get_posts_nav_link($args);
+}
+
+/**
+ * Retrieve comments page number link.
+ *
+ * @since 2.7.0
+ *
+ * @param int $pagenum Optional. Page number.
+ * @return string
+ */
+function get_comments_pagenum_link( $pagenum = 1, $max_page = 0 ) {
+ global $wp_rewrite;
+
+ $pagenum = (int) $pagenum;
+
+ $result = get_permalink();
+
+ if ( 'newest' == get_option('default_comments_page') ) {
+ if ( $pagenum != $max_page ) {
+ if ( $wp_rewrite->using_permalinks() )
+ $result = user_trailingslashit( trailingslashit($result) . 'comment-page-' . $pagenum, 'commentpaged');
+ else
+ $result = add_query_arg( 'cpage', $pagenum, $result );
+ }
+ } elseif ( $pagenum > 1 ) {
+ if ( $wp_rewrite->using_permalinks() )
+ $result = user_trailingslashit( trailingslashit($result) . 'comment-page-' . $pagenum, 'commentpaged');
+ else
+ $result = add_query_arg( 'cpage', $pagenum, $result );
+ }
+
+ $result .= '#comments';
+
+ $result = apply_filters('get_comments_pagenum_link', $result);
+
+ return $result;
+}
+
+/**
+ * Return the link to next comments page.
+ *
+ * @since 2.7.1
+ *
+ * @param string $label Optional. Label for link text.
+ * @param int $max_page Optional. Max page.
+ * @return string|null
+ */
+function get_next_comments_link( $label = '', $max_page = 0 ) {
+ global $wp_query;
+
+ if ( !is_singular() || !get_option('page_comments') )
+ return;
+
+ $page = get_query_var('cpage');
+
+ $nextpage = intval($page) + 1;
+
+ if ( empty($max_page) )
+ $max_page = $wp_query->max_num_comment_pages;
+
+ if ( empty($max_page) )
+ $max_page = get_comment_pages_count();
+
+ if ( $nextpage > $max_page )
+ return;
+
+ if ( empty($label) )
+ $label = __('Newer Comments »');
+
+ return '<a href="' . esc_url( get_comments_pagenum_link( $nextpage, $max_page ) ) . '" ' . apply_filters( 'next_comments_link_attributes', '' ) . '>'. preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $label) .'</a>';
+}
+
+/**
+ * Display the link to next comments page.
+ *
+ * @since 2.7.0
+ *
+ * @param string $label Optional. Label for link text.
+ * @param int $max_page Optional. Max page.
+ */
+function next_comments_link( $label = '', $max_page = 0 ) {
+ echo get_next_comments_link( $label, $max_page );
+}
+
+/**
+ * Return the previous comments page link.
+ *
+ * @since 2.7.1
+ *
+ * @param string $label Optional. Label for comments link text.
+ * @return string|null
+ */
+function get_previous_comments_link( $label = '' ) {
+ if ( !is_singular() || !get_option('page_comments') )
+ return;
+
+ $page = get_query_var('cpage');
+
+ if ( intval($page) <= 1 )
+ return;
+
+ $prevpage = intval($page) - 1;
+
+ if ( empty($label) )
+ $label = __('« Older Comments');
+
+ return '<a href="' . esc_url( get_comments_pagenum_link( $prevpage ) ) . '" ' . apply_filters( 'previous_comments_link_attributes', '' ) . '>' . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $label) .'</a>';
+}
+
+/**
+ * Display the previous comments page link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $label Optional. Label for comments link text.
+ */
+function previous_comments_link( $label = '' ) {
+ echo get_previous_comments_link( $label );
+}
+
+/**
+ * Create pagination links for the comments on the current post.
+ *
+ * @see paginate_links()
+ * @since 2.7.0
+ *
+ * @param string|array $args Optional args. See paginate_links().
+ * @return string Markup for pagination links.
+*/
+function paginate_comments_links($args = array()) {
+ global $wp_rewrite;
+
+ if ( !is_singular() || !get_option('page_comments') )
+ return;
+
+ $page = get_query_var('cpage');
+ if ( !$page )
+ $page = 1;
+ $max_page = get_comment_pages_count();
+ $defaults = array(
+ 'base' => add_query_arg( 'cpage', '%#%' ),
+ 'format' => '',
+ 'total' => $max_page,
+ 'current' => $page,
+ 'echo' => true,
+ 'add_fragment' => '#comments'
+ );
+ if ( $wp_rewrite->using_permalinks() )
+ $defaults['base'] = user_trailingslashit(trailingslashit(get_permalink()) . 'comment-page-%#%', 'commentpaged');
+
+ $args = wp_parse_args( $args, $defaults );
+ $page_links = paginate_links( $args );
+
+ if ( $args['echo'] )
+ echo $page_links;
+ else
+ return $page_links;
+}
+
+/**
+ * Retrieve the Press This bookmarklet link.
+ *
+ * Use this in 'a' element 'href' attribute.
+ *
+ * @since 2.6.0
+ *
+ * @return string
+ */
+function get_shortcut_link() {
+ // In case of breaking changes, version this. #WP20071
+ $link = "javascript:
+ var d=document,
+ w=window,
+ e=w.getSelection,
+ k=d.getSelection,
+ x=d.selection,
+ s=(e?e():(k)?k():(x?x.createRange().text:0)),
+ f='" . admin_url('press-this.php') . "',
+ l=d.location,
+ e=encodeURIComponent,
+ u=f+'?u='+e(l.href)+'&t='+e(d.title)+'&s='+e(s)+'&v=4';
+ a=function(){if(!w.open(u,'t','toolbar=0,resizable=1,scrollbars=1,status=1,width=720,height=570'))l.href=u;};
+ if (/Firefox/.test(navigator.userAgent)) setTimeout(a, 0); else a();
+ void(0)";
+
+ $link = str_replace(array("\r", "\n", "\t"), '', $link);
+
+ return apply_filters('shortcut_link', $link);
+}
+
+/**
+ * Retrieve the home url for the current site.
+ *
+ * Returns the 'home' option with the appropriate protocol, 'https' if
+ * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
+ * overridden.
+ *
+ * @package WordPress
+ * @since 3.0.0
+ *
+ * @uses get_home_url()
+ *
+ * @param string $path (optional) Path relative to the home url.
+ * @param string $scheme (optional) Scheme to give the home url context. Currently 'http', 'https', or 'relative'.
+ * @return string Home url link with optional path appended.
+*/
+function home_url( $path = '', $scheme = null ) {
+ return get_home_url( null, $path, $scheme );
+}
+
+/**
+ * Retrieve the home url for a given site.
+ *
+ * Returns the 'home' option with the appropriate protocol, 'https' if
+ * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
+ * overridden.
+ *
+ * @package WordPress
+ * @since 3.0.0
+ *
+ * @param int $blog_id (optional) Blog ID. Defaults to current blog.
+ * @param string $path (optional) Path relative to the home url.
+ * @param string $scheme (optional) Scheme to give the home url context. Currently 'http', 'https', or 'relative'.
+ * @return string Home url link with optional path appended.
+*/
+function get_home_url( $blog_id = null, $path = '', $scheme = null ) {
+ $orig_scheme = $scheme;
+
+ if ( empty( $blog_id ) || !is_multisite() ) {
+ $url = get_option( 'home' );
+ } else {
+ switch_to_blog( $blog_id );
+ $url = get_option( 'home' );
+ restore_current_blog();
+ }
+
+ if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) {
+ if ( is_ssl() && ! is_admin() && 'wp-login.php' !== $GLOBALS['pagenow'] )
+ $scheme = 'https';
+ else
+ $scheme = parse_url( $url, PHP_URL_SCHEME );
+ }
+
+ $url = set_url_scheme( $url, $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= '/' . ltrim( $path, '/' );
+
+ return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id );
+}
+
+/**
+ * Retrieve the site url for the current site.
+ *
+ * Returns the 'site_url' option with the appropriate protocol, 'https' if
+ * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
+ * overridden.
+ *
+ * @package WordPress
+ * @since 2.6.0
+ *
+ * @uses get_site_url()
+ *
+ * @param string $path Optional. Path relative to the site url.
+ * @param string $scheme Optional. Scheme to give the site url context. See set_url_scheme().
+ * @return string Site url link with optional path appended.
+*/
+function site_url( $path = '', $scheme = null ) {
+ return get_site_url( null, $path, $scheme );
+}
+
+/**
+ * Retrieve the site url for a given site.
+ *
+ * Returns the 'site_url' option with the appropriate protocol, 'https' if
+ * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
+ * overridden.
+ *
+ * @package WordPress
+ * @since 3.0.0
+ *
+ * @param int $blog_id (optional) Blog ID. Defaults to current blog.
+ * @param string $path Optional. Path relative to the site url.
+ * @param string $scheme Optional. Scheme to give the site url context. Currently 'http', 'https', 'login', 'login_post', 'admin', or 'relative'.
+ * @return string Site url link with optional path appended.
+*/
+function get_site_url( $blog_id = null, $path = '', $scheme = null ) {
+ if ( empty( $blog_id ) || !is_multisite() ) {
+ $url = get_option( 'siteurl' );
+ } else {
+ switch_to_blog( $blog_id );
+ $url = get_option( 'siteurl' );
+ restore_current_blog();
+ }
+
+ $url = set_url_scheme( $url, $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= '/' . ltrim( $path, '/' );
+
+ return apply_filters( 'site_url', $url, $path, $scheme, $blog_id );
+}
+
+/**
+ * Retrieve the url to the admin area for the current site.
+ *
+ * @package WordPress
+ * @since 2.6.0
+ *
+ * @param string $path Optional path relative to the admin url.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Admin url link with optional path appended.
+*/
+function admin_url( $path = '', $scheme = 'admin' ) {
+ return get_admin_url( null, $path, $scheme );
+}
+
+/**
+ * Retrieve the url to the admin area for a given site.
+ *
+ * @package WordPress
+ * @since 3.0.0
+ *
+ * @param int $blog_id (optional) Blog ID. Defaults to current blog.
+ * @param string $path Optional path relative to the admin url.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Admin url link with optional path appended.
+*/
+function get_admin_url( $blog_id = null, $path = '', $scheme = 'admin' ) {
+ $url = get_site_url($blog_id, 'wp-admin/', $scheme);
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim( $path, '/' );
+
+ return apply_filters( 'admin_url', $url, $path, $blog_id );
+}
+
+/**
+ * Retrieve the url to the includes directory.
+ *
+ * @package WordPress
+ * @since 2.6.0
+ *
+ * @param string $path Optional. Path relative to the includes url.
+ * @param string $scheme Optional. Scheme to give the includes url context.
+ * @return string Includes url link with optional path appended.
+*/
+function includes_url( $path = '', $scheme = null ) {
+ $url = site_url( '/' . WPINC . '/', $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim($path, '/');
+
+ return apply_filters('includes_url', $url, $path);
+}
+
+/**
+ * Retrieve the url to the content directory.
+ *
+ * @package WordPress
+ * @since 2.6.0
+ *
+ * @param string $path Optional. Path relative to the content url.
+ * @return string Content url link with optional path appended.
+*/
+function content_url($path = '') {
+ $url = set_url_scheme( WP_CONTENT_URL );
+
+ if ( $path && is_string( $path ) )
+ $url .= '/' . ltrim($path, '/');
+
+ return apply_filters('content_url', $url, $path);
+}
+
+/**
+ * Retrieve the url to the plugins directory or to a specific file within that directory.
+ * You can hardcode the plugin slug in $path or pass __FILE__ as a second argument to get the correct folder name.
+ *
+ * @package WordPress
+ * @since 2.6.0
+ *
+ * @param string $path Optional. Path relative to the plugins url.
+ * @param string $plugin Optional. The plugin file that you want to be relative to - i.e. pass in __FILE__
+ * @return string Plugins url link with optional path appended.
+*/
+function plugins_url($path = '', $plugin = '') {
+
+ $mu_plugin_dir = WPMU_PLUGIN_DIR;
+ foreach ( array('path', 'plugin', 'mu_plugin_dir') as $var ) {
+ $$var = str_replace('\\' ,'/', $$var); // sanitize for Win32 installs
+ $$var = preg_replace('|/+|', '/', $$var);
+ }
+
+ if ( !empty($plugin) && 0 === strpos($plugin, $mu_plugin_dir) )
+ $url = WPMU_PLUGIN_URL;
+ else
+ $url = WP_PLUGIN_URL;
+
+
+ $url = set_url_scheme( $url );
+
+ if ( !empty($plugin) && is_string($plugin) ) {
+ $folder = dirname(plugin_basename($plugin));
+ if ( '.' != $folder )
+ $url .= '/' . ltrim($folder, '/');
+ }
+
+ if ( $path && is_string( $path ) )
+ $url .= '/' . ltrim($path, '/');
+
+ return apply_filters('plugins_url', $url, $path, $plugin);
+}
+
+/**
+ * Retrieve the site url for the current network.
+ *
+ * Returns the site url with the appropriate protocol, 'https' if
+ * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
+ * overridden.
+ *
+ * @package WordPress
+ * @since 3.0.0
+ *
+ * @param string $path Optional. Path relative to the site url.
+ * @param string $scheme Optional. Scheme to give the site url context. See set_url_scheme().
+ * @return string Site url link with optional path appended.
+*/
+function network_site_url( $path = '', $scheme = null ) {
+ global $current_site;
+
+ if ( ! is_multisite() )
+ return site_url($path, $scheme);
+
+ if ( 'relative' == $scheme )
+ $url = $current_site->path;
+ else
+ $url = set_url_scheme( 'http://' . $current_site->domain . $current_site->path, $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim( $path, '/' );
+
+ return apply_filters( 'network_site_url', $url, $path, $scheme );
+}
+
+/**
+ * Retrieve the home url for the current network.
+ *
+ * Returns the home url with the appropriate protocol, 'https' if
+ * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
+ * overridden.
+ *
+ * @package WordPress
+ * @since 3.0.0
+ *
+ * @param string $path (optional) Path relative to the home url.
+ * @param string $scheme (optional) Scheme to give the home url context. Currently 'http', 'https', or 'relative'.
+ * @return string Home url link with optional path appended.
+*/
+function network_home_url( $path = '', $scheme = null ) {
+ global $current_site;
+
+ if ( ! is_multisite() )
+ return home_url($path, $scheme);
+
+ $orig_scheme = $scheme;
+
+ if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) )
+ $scheme = is_ssl() && ! is_admin() ? 'https' : 'http';
+
+ if ( 'relative' == $scheme )
+ $url = $current_site->path;
+ else
+ $url = set_url_scheme( 'http://' . $current_site->domain . $current_site->path, $scheme );
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim( $path, '/' );
+
+ return apply_filters( 'network_home_url', $url, $path, $orig_scheme);
+}
+
+/**
+ * Retrieve the url to the admin area for the network.
+ *
+ * @package WordPress
+ * @since 3.0.0
+ *
+ * @param string $path Optional path relative to the admin url.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Admin url link with optional path appended.
+*/
+function network_admin_url( $path = '', $scheme = 'admin' ) {
+ if ( ! is_multisite() )
+ return admin_url( $path, $scheme );
+
+ $url = network_site_url('wp-admin/network/', $scheme);
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim($path, '/');
+
+ return apply_filters('network_admin_url', $url, $path);
+}
+
+/**
+ * Retrieve the url to the admin area for the current user.
+ *
+ * @package WordPress
+ * @since 3.0.0
+ *
+ * @param string $path Optional path relative to the admin url.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Admin url link with optional path appended.
+*/
+function user_admin_url( $path = '', $scheme = 'admin' ) {
+ $url = network_site_url('wp-admin/user/', $scheme);
+
+ if ( $path && is_string( $path ) )
+ $url .= ltrim($path, '/');
+
+ return apply_filters('user_admin_url', $url, $path);
+}
+
+/**
+ * Retrieve the url to the admin area for either the current blog or the network depending on context.
+ *
+ * @package WordPress
+ * @since 3.1.0
+ *
+ * @param string $path Optional path relative to the admin url.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Admin url link with optional path appended.
+*/
+function self_admin_url($path = '', $scheme = 'admin') {
+ if ( is_network_admin() )
+ return network_admin_url($path, $scheme);
+ elseif ( is_user_admin() )
+ return user_admin_url($path, $scheme);
+ else
+ return admin_url($path, $scheme);
+}
+
+/**
+ * Set the scheme for a URL
+ *
+ * @since 3.4.0
+ *
+ * @param string $url Absolute url that includes a scheme
+ * @param string $scheme Optional. Scheme to give $url. Currently 'http', 'https', 'login', 'login_post', 'admin', or 'relative'.
+ * @return string $url URL with chosen scheme.
+ */
+function set_url_scheme( $url, $scheme = null ) {
+ $orig_scheme = $scheme;
+ if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) {
+ if ( ( 'login_post' == $scheme || 'rpc' == $scheme ) && ( force_ssl_login() || force_ssl_admin() ) )
+ $scheme = 'https';
+ elseif ( ( 'login' == $scheme ) && force_ssl_admin() )
+ $scheme = 'https';
+ elseif ( ( 'admin' == $scheme ) && force_ssl_admin() )
+ $scheme = 'https';
+ else
+ $scheme = ( is_ssl() ? 'https' : 'http' );
+ }
+
+ $url = trim( $url );
+ if ( substr( $url, 0, 2 ) === '//' )
+ $url = 'http:' . $url;
+
+ if ( 'relative' == $scheme ) {
+ $url = ltrim( preg_replace( '#^\w+://[^/]*#', '', $url ) );
+ if ( $url !== '' && $url[0] === '/' )
+ $url = '/' . ltrim($url , "/ \t\n\r\0\x0B" );
+ } else {
+ $url = preg_replace( '#^\w+://#', $scheme . '://', $url );
+ }
+
+ return apply_filters( 'set_url_scheme', $url, $scheme, $orig_scheme );
+}
+
+/**
+ * Get the URL to the user's dashboard.
+ *
+ * If a user does not belong to any site, the global user dashboard is used. If the user belongs to the current site,
+ * the dashboard for the current site is returned. If the user cannot edit the current site, the dashboard to the user's
+ * primary blog is returned.
+ *
+ * @since 3.1.0
+ *
+ * @param int $user_id User ID
+ * @param string $path Optional path relative to the dashboard. Use only paths known to both blog and user admins.
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Dashboard url link with optional path appended.
+ */
+function get_dashboard_url( $user_id, $path = '', $scheme = 'admin' ) {
+ $user_id = (int) $user_id;
+
+ $blogs = get_blogs_of_user( $user_id );
+ if ( ! is_super_admin() && empty($blogs) ) {
+ $url = user_admin_url( $path, $scheme );
+ } elseif ( ! is_multisite() ) {
+ $url = admin_url( $path, $scheme );
+ } else {
+ $current_blog = get_current_blog_id();
+ if ( $current_blog && ( is_super_admin( $user_id ) || in_array( $current_blog, array_keys( $blogs ) ) ) ) {
+ $url = admin_url( $path, $scheme );
+ } else {
+ $active = get_active_blog_for_user( $user_id );
+ if ( $active )
+ $url = get_admin_url( $active->blog_id, $path, $scheme );
+ else
+ $url = user_admin_url( $path, $scheme );
+ }
+ }
+
+ return apply_filters( 'user_dashboard_url', $url, $user_id, $path, $scheme);
+}
+
+/**
+ * Get the URL to the user's profile editor.
+ *
+ * @since 3.1.0
+ *
+ * @param int $user User ID
+ * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
+ * @return string Dashboard url link with optional path appended.
+ */
+function get_edit_profile_url( $user, $scheme = 'admin' ) {
+ $user = (int) $user;
+
+ if ( is_user_admin() )
+ $url = user_admin_url( 'profile.php', $scheme );
+ elseif ( is_network_admin() )
+ $url = network_admin_url( 'profile.php', $scheme );
+ else
+ $url = get_dashboard_url( $user, 'profile.php', $scheme );
+
+ return apply_filters( 'edit_profile_url', $url, $user, $scheme);
+}
+
+/**
+ * Output rel=canonical for singular queries.
+ *
+ * @package WordPress
+ * @since 2.9.0
+*/
+function rel_canonical() {
+ if ( !is_singular() )
+ return;
+
+ global $wp_the_query;
+ if ( !$id = $wp_the_query->get_queried_object_id() )
+ return;
+
+ $link = get_permalink( $id );
+
+ if ( $page = get_query_var('cpage') )
+ $link = get_comments_pagenum_link( $page );
+
+ echo "<link rel='canonical' href='$link' />\n";
+}
+
+/**
+ * Return a shortlink for a post, page, attachment, or blog.
+ *
+ * This function exists to provide a shortlink tag that all themes and plugins can target. A plugin must hook in to
+ * provide the actual shortlinks. Default shortlink support is limited to providing ?p= style links for posts.
+ * Plugins can short-circuit this function via the pre_get_shortlink filter or filter the output
+ * via the get_shortlink filter.
+ *
+ * @since 3.0.0.
+ *
+ * @param int $id A post or blog id. Default is 0, which means the current post or blog.
+ * @param string $context Whether the id is a 'blog' id, 'post' id, or 'media' id. If 'post', the post_type of the post is consulted. If 'query', the current query is consulted to determine the id and context. Default is 'post'.
+ * @param bool $allow_slugs Whether to allow post slugs in the shortlink. It is up to the plugin how and whether to honor this.
+ * @return string A shortlink or an empty string if no shortlink exists for the requested resource or if shortlinks are not enabled.
+ */
+function wp_get_shortlink($id = 0, $context = 'post', $allow_slugs = true) {
+ // Allow plugins to short-circuit this function.
+ $shortlink = apply_filters('pre_get_shortlink', false, $id, $context, $allow_slugs);
+ if ( false !== $shortlink )
+ return $shortlink;
+
+ global $wp_query;
+ $post_id = 0;
+ if ( 'query' == $context && is_singular() ) {
+ $post_id = $wp_query->get_queried_object_id();
+ $post = get_post( $post_id );
+ } elseif ( 'post' == $context ) {
+ $post = get_post( $id );
+ if ( ! empty( $post->ID ) )
+ $post_id = $post->ID;
+ }
+
+ $shortlink = '';
+
+ // Return p= link for all public post types.
+ if ( ! empty( $post_id ) ) {
+ $post_type = get_post_type_object( $post->post_type );
+ if ( $post_type->public )
+ $shortlink = home_url('?p=' . $post_id);
+ }
+
+ return apply_filters('get_shortlink', $shortlink, $id, $context, $allow_slugs);
+}
+
+/**
+ * Inject rel=shortlink into head if a shortlink is defined for the current page.
+ *
+ * Attached to the wp_head action.
+ *
+ * @since 3.0.0
+ *
+ * @uses wp_get_shortlink()
+ */
+function wp_shortlink_wp_head() {
+ $shortlink = wp_get_shortlink( 0, 'query' );
+
+ if ( empty( $shortlink ) )
+ return;
+
+ echo "<link rel='shortlink' href='" . esc_url( $shortlink ) . "' />\n";
+}
+
+/**
+ * Send a Link: rel=shortlink header if a shortlink is defined for the current page.
+ *
+ * Attached to the wp action.
+ *
+ * @since 3.0.0
+ *
+ * @uses wp_get_shortlink()
+ */
+function wp_shortlink_header() {
+ if ( headers_sent() )
+ return;
+
+ $shortlink = wp_get_shortlink(0, 'query');
+
+ if ( empty($shortlink) )
+ return;
+
+ header('Link: <' . $shortlink . '>; rel=shortlink', false);
+}
+
+/**
+ * Display the Short Link for a Post
+ *
+ * Must be called from inside "The Loop"
+ *
+ * Call like the_shortlink(__('Shortlinkage FTW'))
+ *
+ * @since 3.0.0
+ *
+ * @param string $text Optional The link text or HTML to be displayed. Defaults to 'This is the short link.'
+ * @param string $title Optional The tooltip for the link. Must be sanitized. Defaults to the sanitized post title.
+ * @param string $before Optional HTML to display before the link.
+ * @param string $after Optional HTML to display after the link.
+ */
+function the_shortlink( $text = '', $title = '', $before = '', $after = '' ) {
+ $post = get_post();
+
+ if ( empty( $text ) )
+ $text = __('This is the short link.');
+
+ if ( empty( $title ) )
+ $title = the_title_attribute( array( 'echo' => false ) );
+
+ $shortlink = wp_get_shortlink( $post->ID );
+
+ if ( !empty( $shortlink ) ) {
+ $link = '<a rel="shortlink" href="' . esc_url( $shortlink ) . '" title="' . $title . '">' . $text . '</a>';
+ $link = apply_filters( 'the_shortlink', $link, $shortlink, $text, $title );
+ echo $before, $link, $after;
+ }
+}