diff -r 53cff4b4a802 -r bde1974c263b web/wp-includes/link-template.php
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-includes/link-template.php Wed Feb 03 15:37:20 2010 +0000
@@ -0,0 +1,1878 @@
+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
+ $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') {
+ global $post;
+ switch ( strtolower($mode) ) {
+ case 'title':
+ $title = sanitize_title($post->post_title) . '-' . $post->ID;
+ echo '';
+ break;
+ case 'id':
+ default:
+ echo '';
+ break;
+ }
+}
+
+/**
+ * Retrieve full permalink for current post or post ID.
+ *
+ * @since 1.0.0
+ *
+ * @param int $id Optional. Post ID.
+ * @param bool $leavename Optional, defaults to false. Whether to keep post name or page name.
+ * @return string
+ */
+function get_permalink($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);
+
+ $permalink = get_option('permalink_structure');
+
+ if ( '' != $permalink && !in_array($post->post_status, array('draft', 'pending')) ) {
+ $unixtime = strtotime($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 = $cats[0]->slug;
+ if ( $parent = $cats[0]->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_category( get_option( 'default_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,
+ );
+ $permalink = get_option('home') . str_replace($rewritecode, $rewritereplace, $permalink);
+ $permalink = user_trailingslashit($permalink, 'single');
+ return apply_filters('post_link', $permalink, $post, $leavename);
+ } else { // if they're not using the fancy permalink option
+ $permalink = trailingslashit(get_option('home')) . '?p=' . $post->ID;
+ return apply_filters('post_link', $permalink, $post, $leavename);
+ }
+}
+
+/**
+ * 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, $deprecated = '') {
+ return get_permalink($post_id);
+}
+
+/**
+ * Retrieve the permalink for current page or page ID.
+ *
+ * Respects page_on_front. Use this one.
+ *
+ * @since 1.5.0
+ *
+ * @param int $id Optional. Post ID.
+ * @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( $id = false, $leavename = false, $sample = false ) {
+ global $post;
+
+ $id = (int) $id;
+ if ( !$id )
+ $id = (int) $post->ID;
+
+ if ( 'page' == get_option('show_on_front') && $id == get_option('page_on_front') )
+ $link = get_option('home');
+ else
+ $link = _get_page_link( $id , $leavename, $sample );
+
+ return apply_filters('page_link', $link, $id);
+}
+
+/**
+ * Retrieve the page permalink.
+ *
+ * Ignores page_on_front. Internal use only.
+ *
+ * @since 2.1.0
+ * @access private
+ *
+ * @param int $id Optional. Post ID.
+ * @param bool $leavename Optional. Leave name.
+ * @param bool $sample Optional. Sample permalink.
+ * @return string
+ */
+function _get_page_link( $id = false, $leavename = false, $sample = false ) {
+ global $post, $wp_rewrite;
+
+ if ( !$id )
+ $id = (int) $post->ID;
+ else
+ $post = &get_post($id);
+
+ $pagestruct = $wp_rewrite->get_page_permastruct();
+
+ if ( '' != $pagestruct && ( ( isset($post->post_status) && 'draft' != $post->post_status && 'pending' != $post->post_status ) || $sample ) ) {
+ $link = get_page_uri($id);
+ $link = ( $leavename ) ? $pagestruct : str_replace('%pagename%', $link, $pagestruct);
+ $link = trailingslashit(get_option('home')) . "$link";
+ $link = user_trailingslashit($link, 'page');
+ } else {
+ $link = trailingslashit(get_option('home')) . "?page_id=$id";
+ }
+
+ return apply_filters( '_get_page_link', $link, $id );
+}
+
+/**
+ * Retrieve permalink for attachment.
+ *
+ * This can be used in the WordPress Loop or outside of it.
+ *
+ * @since 2.0.0
+ *
+ * @param int $id Optional. Post ID.
+ * @return string
+ */
+function get_attachment_link($id = false) {
+ global $post, $wp_rewrite;
+
+ $link = false;
+
+ if (! $id) {
+ $id = (int) $post->ID;
+ }
+
+ $object = get_post($id);
+ if ( $wp_rewrite->using_permalinks() && ($object->post_parent > 0) && ($object->post_parent != $id) ) {
+ $parent = get_post($object->post_parent);
+ if ( 'page' == $parent->post_type )
+ $parentlink = _get_page_link( $object->post_parent ); // Ignores page_on_front
+ else
+ $parentlink = get_permalink( $object->post_parent );
+ if ( is_numeric($object->post_name) || false !== strpos(get_option('permalink_structure'), '%category%') )
+ $name = 'attachment/' . $object->post_name; // // is paged so we use the explicit attachment marker
+ else
+ $name = $object->post_name;
+ if (strpos($parentlink, '?') === false)
+ $link = user_trailingslashit( trailingslashit($parentlink) . $name );
+ }
+
+ if (! $link ) {
+ $link = trailingslashit(get_bloginfo('url')) . "?attachment_id=$id";
+ }
+
+ return apply_filters('attachment_link', $link, $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', time()+(get_option('gmt_offset') * 3600));
+ $yearlink = $wp_rewrite->get_year_permastruct();
+ if ( !empty($yearlink) ) {
+ $yearlink = str_replace('%year%', $year, $yearlink);
+ return apply_filters('year_link', get_option('home') . user_trailingslashit($yearlink, 'year'), $year);
+ } else {
+ return apply_filters('year_link', trailingslashit(get_option('home')) . '?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 )
+ $year = gmdate('Y', time()+(get_option('gmt_offset') * 3600));
+ if ( !$month )
+ $month = gmdate('m', time()+(get_option('gmt_offset') * 3600));
+ $monthlink = $wp_rewrite->get_month_permastruct();
+ if ( !empty($monthlink) ) {
+ $monthlink = str_replace('%year%', $year, $monthlink);
+ $monthlink = str_replace('%monthnum%', zeroise(intval($month), 2), $monthlink);
+ return apply_filters('month_link', get_option('home') . user_trailingslashit($monthlink, 'month'), $year, $month);
+ } else {
+ return apply_filters('month_link', trailingslashit(get_option('home')) . '?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 )
+ $year = gmdate('Y', time()+(get_option('gmt_offset') * 3600));
+ if ( !$month )
+ $month = gmdate('m', time()+(get_option('gmt_offset') * 3600));
+ if ( !$day )
+ $day = gmdate('j', time()+(get_option('gmt_offset') * 3600));
+
+ $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), $daylink);
+ return apply_filters('day_link', get_option('home') . user_trailingslashit($daylink, 'day'), $year, $month, $day);
+ } else {
+ return apply_filters('day_link', trailingslashit(get_option('home')) . '?m=' . $year . zeroise($month, 2) . zeroise($day, 2), $year, $month, $day);
+ }
+}
+
+/**
+ * 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");
+ $output = get_option('home') . user_trailingslashit($permalink, 'feed');
+ } else {
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ if ( false !== strpos($feed, 'comments_') )
+ $feed = str_replace('comments_', 'comments-', $feed);
+
+ $output = trailingslashit(get_option('home')) . "?feed={$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 = '', $feed = '') {
+ global $id;
+
+ if ( empty($post_id) )
+ $post_id = (int) $id;
+
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ if ( '' != get_option('permalink_structure') ) {
+ $url = trailingslashit( get_permalink($post_id) ) . '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 )
+ $url = trailingslashit(get_option('home')) . "?feed=$feed&page_id=$post_id";
+ else
+ $url = trailingslashit(get_option('home')) . "?feed=$feed&p=$post_id";
+ }
+
+ 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 = '' ) {
+ $url = get_post_comments_feed_link($post_id, $feed);
+ if ( empty($link_text) )
+ $link_text = __('Comments Feed');
+
+ echo apply_filters( 'post_comments_feed_link_html', "$link_text", $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 ) {
+ $link = trailingslashit(get_option('home')) . "?feed=$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 post 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 = '') {
+ $cat_id = (int) $cat_id;
+
+ $category = get_category($cat_id);
+
+ if ( empty($category) || is_wp_error($category) )
+ return false;
+
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ $permalink_structure = get_option('permalink_structure');
+
+ if ( '' == $permalink_structure ) {
+ $link = trailingslashit(get_option('home')) . "?feed=$feed&cat=" . $cat_id;
+ } else {
+ $link = get_category_link($cat_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('category_feed_link', $link, $feed);
+
+ 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 = '') {
+ $tag_id = (int) $tag_id;
+
+ $tag = get_tag($tag_id);
+
+ if ( empty($tag) || is_wp_error($tag) )
+ return false;
+
+ $permalink_structure = get_option('permalink_structure');
+
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ if ( '' == $permalink_structure ) {
+ $link = trailingslashit(get_option('home')) . "?feed=$feed&tag=" . $tag->slug;
+ } else {
+ $link = get_tag_link($tag->term_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('tag_feed_link', $link, $feed);
+
+ return $link;
+}
+
+/**
+ * Retrieve edit tag link.
+ *
+ * @since 2.7.0
+ *
+ * @param int $tag_id Tag ID
+ * @return string
+ */
+function get_edit_tag_link( $tag_id = 0, $taxonomy = 'post_tag' ) {
+ $tag = get_term($tag_id, $taxonomy);
+
+ if ( !current_user_can('manage_categories') )
+ return;
+
+ $location = admin_url('edit-tags.php?action=edit&taxonomy=' . $taxonomy . '&tag_ID=' . $tag->term_id);
+ return apply_filters( 'get_edit_tag_link', $location );
+}
+
+/**
+ * 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 int|object $tag Tag object or ID
+ * @return string|null HTML content, if $echo is set to false.
+ */
+function edit_tag_link( $link = '', $before = '', $after = '', $tag = null ) {
+ $tag = get_term($tag, 'post_tag');
+
+ if ( !current_user_can('manage_categories') )
+ return;
+
+ if ( empty($link) )
+ $link = __('Edit This');
+
+ $link = '' . $link . '';
+ echo $before . apply_filters( 'edit_tag_link', $link, $tag->term_id ) . $after;
+}
+
+/**
+ * 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 = '', $feed = '') {
+ if ( empty($search_query) )
+ $search = esc_attr( urlencode(get_search_query()) );
+ else
+ $search = esc_attr( urlencode(stripslashes($search_query)) );
+
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ $link = trailingslashit(get_option('home')) . "?s=$search&feed=$feed";
+
+ $link = apply_filters('search_feed_link', $link);
+
+ 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 = '', $feed = '') {
+ if ( empty($search_query) )
+ $search = esc_attr( urlencode(get_search_query()) );
+ else
+ $search = esc_attr( urlencode(stripslashes($search_query)) );
+
+ if ( empty($feed) )
+ $feed = get_default_feed();
+
+ $link = trailingslashit(get_option('home')) . "?s=$search&feed=comments-$feed";
+
+ $link = apply_filters('search_feed_link', $link);
+
+ return $link;
+}
+
+/**
+ * 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, default 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 ( 'display' == $context )
+ $action = 'action=edit&';
+ else
+ $action = 'action=edit&';
+
+ switch ( $post->post_type ) :
+ case 'page' :
+ if ( !current_user_can( 'edit_page', $post->ID ) )
+ return;
+ $file = 'page';
+ $var = 'post';
+ break;
+ case 'attachment' :
+ if ( !current_user_can( 'edit_post', $post->ID ) )
+ return;
+ $file = 'media';
+ $var = 'attachment_id';
+ break;
+ case 'revision' :
+ if ( !current_user_can( 'edit_post', $post->ID ) )
+ return;
+ $file = 'revision';
+ $var = 'revision';
+ $action = '';
+ break;
+ default :
+ if ( !current_user_can( 'edit_post', $post->ID ) )
+ return apply_filters( 'get_edit_post_link', '', $post->ID, $context );;
+ $file = 'post';
+ $var = 'post';
+ break;
+ endswitch;
+
+ return apply_filters( 'get_edit_post_link', admin_url("$file.php?{$action}$var=$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');
+
+ $link = '' . $link . '';
+ 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. Can be used with
+ * pages, posts, attachments, and revisions.
+ *
+ * @since 2.9.0
+ *
+ * @param int $id Optional. Post ID.
+ * @param string $context Optional, default to display. How to write the '&', defaults to '&'.
+ * @return string
+ */
+function get_delete_post_link($id = 0, $context = 'display') {
+ if ( !$post = &get_post( $id ) )
+ return;
+
+ if ( 'display' == $context )
+ $action = 'action=trash&';
+ else
+ $action = 'action=trash&';
+
+ switch ( $post->post_type ) :
+ case 'page' :
+ if ( !current_user_can( 'delete_page', $post->ID ) )
+ return;
+ $file = 'page';
+ $var = 'post';
+ break;
+ case 'attachment' :
+ if ( !current_user_can( 'delete_post', $post->ID ) )
+ return;
+ $file = 'media';
+ $var = 'attachment_id';
+ break;
+ case 'revision' :
+ if ( !current_user_can( 'delete_post', $post->ID ) )
+ return;
+ $file = 'revision';
+ $var = 'revision';
+ $action = '';
+ break;
+ default :
+ if ( !current_user_can( 'edit_post', $post->ID ) )
+ return apply_filters( 'get_delete_post_link', '', $post->ID, $context );;
+ $file = 'post';
+ $var = 'post';
+ break;
+ endswitch;
+
+ return apply_filters( 'get_delete_post_link', wp_nonce_url( admin_url("$file.php?{$action}$var=$post->ID"), "trash-{$file}_" . $post->ID ), $context );
+}
+
+/**
+ * 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 );
+ $post = &get_post( $comment->comment_post_ID );
+
+ if ( $post->post_type == 'page' ) {
+ if ( !current_user_can( 'edit_page', $post->ID ) )
+ return;
+ } else {
+ if ( !current_user_can( 'edit_post', $post->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, $post;
+
+ if ( $post->post_type == 'page' ) {
+ if ( !current_user_can( 'edit_page', $post->ID ) )
+ return;
+ } else {
+ if ( !current_user_can( 'edit_post', $post->ID ) )
+ return;
+ }
+
+ if ( null === $link )
+ $link = __('Edit This');
+
+ $link = '';
+ 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 = '' . $link . '';
+ echo $before . apply_filters( 'edit_bookmark_link', $link, $bookmark->link_id ) . $after;
+}
+
+// Navigation links
+
+/**
+ * Retrieve previous post link that is adjacent to current post.
+ *
+ * @since 1.5.0
+ *
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @return string
+ */
+function get_previous_post($in_same_cat = false, $excluded_categories = '') {
+ return get_adjacent_post($in_same_cat, $excluded_categories);
+}
+
+/**
+ * Retrieve next post link that is adjacent to current post.
+ *
+ * @since 1.5.0
+ *
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @return string
+ */
+function get_next_post($in_same_cat = false, $excluded_categories = '') {
+ return get_adjacent_post($in_same_cat, $excluded_categories, false);
+}
+
+/**
+ * Retrieve adjacent post link.
+ *
+ * Can either be next or previous post link.
+ *
+ * @since 2.5.0
+ *
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @param bool $previous Optional. Whether to retrieve previous post.
+ * @return string
+ */
+function get_adjacent_post($in_same_cat = false, $excluded_categories = '', $previous = true) {
+ global $post, $wpdb;
+
+ if ( empty($post) || !is_single() || is_attachment() )
+ 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 ) {
+ $cat_array = wp_get_object_terms($post->ID, 'category', 'fields=ids');
+ $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) ) {
+ $excluded_categories = array_map('intval', explode(' and ', $excluded_categories));
+ if ( !empty($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.* FROM $wpdb->posts AS p $join $where $sort";
+ $query_key = 'adjacent_post_' . md5($query);
+ $result = wp_cache_get($query_key, 'counts');
+ if ( false !== $result )
+ return $result;
+
+ $result = $wpdb->get_row("SELECT p.* FROM $wpdb->posts AS p $join $where $sort");
+ if ( null === $result )
+ $result = '';
+
+ wp_cache_set($query_key, $result, 'counts');
+ 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 same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @param bool $previous Optional, default is true. Whether display link to previous post.
+ * @return string
+ */
+function get_adjacent_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '', $previous = true) {
+ if ( $previous && is_attachment() )
+ $post = & get_post($GLOBALS['post']->post_parent);
+ else
+ $post = get_adjacent_post($in_same_cat,$excluded_categories,$previous);
+
+ if ( empty($post) )
+ return;
+
+ if ( empty($post->post_title) )
+ $post->post_title = $previous ? __('Previous Post') : __('Next Post');
+
+ $date = mysql2date(get_option('date_format'), $post->post_date);
+
+ $title = str_replace('%title', $post->post_title, $title);
+ $title = str_replace('%date', $date, $title);
+ $title = apply_filters('the_title', $title, $post);
+
+ $link = $previous ? "\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 same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ */
+function adjacent_posts_rel_link($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 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 same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ */
+function next_post_rel_link($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 same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ */
+function prev_post_rel_link($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 contraitns specified
+ * by in same category or excluded categories.
+ *
+ * @since 2.8.0
+ *
+ * @param bool $in_same_cat Optional. Whether returned post should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @param bool $previous Optional. Whether to retrieve first post.
+ * @return object
+ */
+function get_boundary_post($in_same_cat = false, $excluded_categories = '', $start = true) {
+ global $post, $wpdb;
+
+ if ( empty($post) || !is_single() || is_attachment() )
+ return null;
+
+ $cat_array = array();
+ $excluded_categories = array();
+ if ( !empty($in_same_cat) || !empty($excluded_categories) ) {
+ if ( !empty($in_same_cat) ) {
+ $cat_array = wp_get_object_terms($post->ID, 'category', 'fields=ids');
+ }
+
+ if ( !empty($excluded_categories) ) {
+ $excluded_categories = array_map('intval', explode(',', $excluded_categories));
+
+ if ( !empty($cat_array) )
+ $excluded_categories = array_diff($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, 'order' => $order, 'orderby' => 'ID', 'category' => $categories) );
+}
+
+/**
+ * Get boundary post relational link.
+ *
+ * Can either be start or end 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 same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @param bool $start Optional, default is true. Whether display link to first post.
+ * @return string
+ */
+function get_boundary_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '', $start = true) {
+ $posts = get_boundary_post($in_same_cat,$excluded_categories,$start);
+ // Even though we limited get_posts to return only 1 item it still returns an array of objects.
+ $post = $posts[0];
+
+ if ( empty($post) )
+ return;
+
+ if ( empty($post->post_title) )
+ $post->post_title = $start ? __('First Post') : __('Last Post');
+
+ $date = mysql2date(get_option('date_format'), $post->post_date);
+
+ $title = str_replace('%title', $post->post_title, $title);
+ $title = str_replace('%date', $date, $title);
+ $title = apply_filters('the_title', $title, $post);
+
+ $link = $start ? "\n";
+
+ $boundary = $start ? 'start' : 'end';
+ return apply_filters( "{$boundary}_post_rel_link", $link );
+}
+
+/**
+ * Display relational link for the first post.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ */
+function start_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
+ echo get_boundary_post_rel_link($title, $in_same_cat, $excluded_categories, true);
+}
+
+/**
+ * Get site index relational link.
+ *
+ * @since 2.8.0
+ *
+ * @return string
+ */
+function get_index_rel_link() {
+ $link = "\n";
+ return apply_filters( "index_rel_link", $link );
+}
+
+/**
+ * Display relational link for the site index.
+ *
+ * @since 2.8.0
+ */
+function index_rel_link() {
+ echo get_index_rel_link();
+}
+
+/**
+ * Get parent post relational link.
+ *
+ * @since 2.8.0
+ *
+ * @param string $title Optional. Link title format.
+ * @return string
+ */
+function get_parent_post_rel_link($title = '%title') {
+ if ( ! empty( $GLOBALS['post'] ) && ! empty( $GLOBALS['post']->post_parent ) )
+ $post = & get_post($GLOBALS['post']->post_parent);
+
+ if ( empty($post) )
+ return;
+
+ $date = mysql2date(get_option('date_format'), $post->post_date);
+
+ $title = str_replace('%title', $post->post_title, $title);
+ $title = str_replace('%date', $date, $title);
+ $title = apply_filters('the_title', $title, $post);
+
+ $link = "\n";
+
+ return apply_filters( "parent_post_rel_link", $link );
+}
+
+/**
+ * Display relational link for parent item
+ *
+ * @since 2.8.0
+ */
+function parent_post_rel_link($title = '%title') {
+ echo get_parent_post_rel_link($title);
+}
+
+/**
+ * Display previous 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 same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ */
+function previous_post_link($format='« %link', $link='%title', $in_same_cat = false, $excluded_categories = '') {
+ adjacent_post_link($format, $link, $in_same_cat, $excluded_categories, true);
+}
+
+/**
+ * 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 same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ */
+function next_post_link($format='%link »', $link='%title', $in_same_cat = false, $excluded_categories = '') {
+ adjacent_post_link($format, $link, $in_same_cat, $excluded_categories, false);
+}
+
+/**
+ * Display adjacent post link.
+ *
+ * Can be either next post link or previous.
+ *
+ * @since 2.5.0
+ *
+ * @param string $format Link anchor format.
+ * @param string $link Link permalink format.
+ * @param bool $in_same_cat Optional. Whether link should be in same category.
+ * @param string $excluded_categories Optional. Excluded categories IDs.
+ * @param bool $previous Optional, default is true. Whether display link to previous post.
+ */
+function adjacent_post_link($format, $link, $in_same_cat = false, $excluded_categories = '', $previous = true) {
+ if ( $previous && is_attachment() )
+ $post = & get_post($GLOBALS['post']->post_parent);
+ else
+ $post = get_adjacent_post($in_same_cat, $excluded_categories, $previous);
+
+ if ( !$post )
+ return;
+
+ $title = $post->post_title;
+
+ if ( empty($post->post_title) )
+ $title = $previous ? __('Previous Post') : __('Next Post');
+
+ $title = apply_filters('the_title', $title, $post);
+ $date = mysql2date(get_option('date_format'), $post->post_date);
+ $rel = $previous ? 'prev' : 'next';
+
+ $string = '';
+ $link = str_replace('%title', $title, $link);
+ $link = str_replace('%date', $date, $link);
+ $link = $string . $link . '';
+
+ $format = str_replace('%link', $link, $format);
+
+ $adjacent = $previous ? 'previous' : 'next';
+ echo apply_filters( "{$adjacent}_post_link", $format, $link );
+}
+
+/**
+ * Retrieve get links for page numbers.
+ *
+ * @since 1.5.0
+ *
+ * @param int $pagenum Optional. Page ID.
+ * @return string
+ */
+function get_pagenum_link($pagenum = 1) {
+ global $wp_rewrite;
+
+ $pagenum = (int) $pagenum;
+
+ $request = remove_query_arg( 'paged' );
+
+ $home_root = parse_url(get_option('home'));
+ $home_root = ( isset($home_root['path']) ) ? $home_root['path'] : '';
+ $home_root = preg_quote( trailingslashit( $home_root ), '|' );
+
+ $request = preg_replace('|^'. $home_root . '|', '', $request);
+ $request = preg_replace('|^/+|', '', $request);
+
+ if ( !$wp_rewrite->using_permalinks() || is_admin() ) {
+ $base = trailingslashit( get_bloginfo( 'home' ) );
+
+ 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 = '';
+ }
+
+ $request = preg_replace( '|page/\d+/?$|', '', $request);
+ $request = preg_replace( '|^index\.php|', '', $request);
+ $request = ltrim($request, '/');
+
+ $base = trailingslashit( get_bloginfo( 'url' ) );
+
+ if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) )
+ $base .= 'index.php/';
+
+ if ( $pagenum > 1 ) {
+ $request = ( ( !empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( 'page/' . $pagenum, 'paged' );
+ }
+
+ $result = $base . $request . $query_string;
+ }
+
+ $result = apply_filters('get_pagenum_link', $result);
+
+ return $result;
+}
+
+/**
+ * Retrieve next posts pages 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 pages 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 pages 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 = 'Next Page »', $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 ( !is_single() && ( empty($paged) || $nextpage <= $max_page) ) {
+ $attr = apply_filters( 'next_posts_link_attributes', '' );
+ return '". preg_replace('/&([^#])(?![a-z]{1,8};)/', '&$1', $label) .'';
+ }
+}
+
+/**
+ * Display the next posts pages 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 = 'Next Page »', $max_page = 0 ) {
+ echo get_next_posts_link( $label, $max_page );
+}
+
+/**
+ * Retrieve previous post pages 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 pages 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 pages link.
+ *
+ * @since 2.7.0
+ *
+ * @param string $label Optional. Previous page link text.
+ * @return string|null
+ */
+function get_previous_posts_link( $label = '« Previous Page' ) {
+ global $paged;
+
+ if ( !is_single() && $paged > 1 ) {
+ $attr = apply_filters( 'previous_posts_link_attributes', '' );
+ return '". preg_replace( '/&([^#])(?![a-z]{1,8};)/', '&$1', $label ) .'';
+ }
+}
+
+/**
+ * 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 = '« Previous Page' ) {
+ 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};)/', '&$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 page numbers links.
+ *
+ * @since 2.7.0
+ *
+ * @param int $pagenum Optional. Page number.
+ * @return string
+ */
+function get_comments_pagenum_link( $pagenum = 1, $max_page = 0 ) {
+ global $post, $wp_rewrite;
+
+ $pagenum = (int) $pagenum;
+
+ $result = get_permalink( $post->ID );
+
+ 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 pages.
+ *
+ * @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 ''. preg_replace('/&([^#])(?![a-z]{1,8};)/', '&$1', $label) .'';
+}
+
+/**
+ * Display the link to next comments pages.
+ *
+ * @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 '' . preg_replace('/&([^#])(?![a-z]{1,8};)/', '&$1', $label) .'';
+}
+
+/**
+ * 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_query, $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 shortcut link.
+ *
+ * Use this in 'a' element 'href' attribute.
+ *
+ * @since 2.6.0
+ *
+ * @return string
+ */
+function get_shortcut_link() {
+ $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 site url.
+ *
+ * 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
+ *
+ * @param string $path Optional. Path relative to the site url.
+ * @param string $scheme Optional. Scheme to give the site url context. Currently 'http','https', 'login', 'login_post', or 'admin'.
+ * @return string Site url link with optional path appended.
+*/
+function site_url($path = '', $scheme = null) {
+ // should the list of allowed schemes be maintained elsewhere?
+ $orig_scheme = $scheme;
+ if ( !in_array($scheme, array('http', 'https')) ) {
+ 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' );
+ }
+
+ $url = str_replace( 'http://', "{$scheme}://", get_option('siteurl') );
+
+ if ( !empty($path) && is_string($path) && strpos($path, '..') === false )
+ $url .= '/' . ltrim($path, '/');
+
+ return apply_filters('site_url', $url, $path, $orig_scheme);
+}
+
+/**
+ * Retrieve the url to the admin area.
+ *
+ * @package WordPress
+ * @since 2.6.0
+ *
+ * @param string $path Optional path relative to the admin url
+ * @return string Admin url link with optional path appended
+*/
+function admin_url($path = '') {
+ $url = site_url('wp-admin/', 'admin');
+
+ if ( !empty($path) && is_string($path) && strpos($path, '..') === false )
+ $url .= ltrim($path, '/');
+
+ return apply_filters('admin_url', $url, $path);
+}
+
+/**
+ * Retrieve the url to the includes directory.
+ *
+ * @package WordPress
+ * @since 2.6.0
+ *
+ * @param string $path Optional. Path relative to the includes url.
+ * @return string Includes url link with optional path appended.
+*/
+function includes_url($path = '') {
+ $url = site_url() . '/' . WPINC . '/';
+
+ if ( !empty($path) && is_string($path) && strpos($path, '..') === false )
+ $url .= ltrim($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 = '') {
+ $scheme = ( is_ssl() ? 'https' : 'http' );
+ $url = WP_CONTENT_URL;
+ if ( 0 === strpos($url, 'http') ) {
+ if ( is_ssl() )
+ $url = str_replace( 'http://', "{$scheme}://", $url );
+ }
+
+ if ( !empty($path) && is_string($path) && strpos($path, '..') === false )
+ $url .= '/' . ltrim($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 = '') {
+ $scheme = ( is_ssl() ? 'https' : 'http' );
+
+ if ( $plugin !== '' && preg_match('#^' . preg_quote(WPMU_PLUGIN_DIR . DIRECTORY_SEPARATOR, '#') . '#', $plugin) ) {
+ $url = WPMU_PLUGIN_URL;
+ } else {
+ $url = WP_PLUGIN_URL;
+ }
+
+ if ( 0 === strpos($url, 'http') ) {
+ if ( is_ssl() )
+ $url = str_replace( 'http://', "{$scheme}://", $url );
+ }
+
+ if ( !empty($plugin) && is_string($plugin) ) {
+ $folder = dirname(plugin_basename($plugin));
+ if ('.' != $folder)
+ $url .= '/' . ltrim($folder, '/');
+ }
+
+ if ( !empty($path) && is_string($path) && strpos($path, '..') === false )
+ $url .= '/' . ltrim($path, '/');
+
+ return apply_filters('plugins_url', $url, $path, $plugin);
+}
+
+/**
+ * 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 );
+ echo "\n";
+}
+
+?>