X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/177fd6fefd2e3d5a0ea6591c71d660cabdb3c1a4..985e04597a9f1ddc4a3b406d0fb33722e097ee8b:/wp-includes/link-template.php diff --git a/wp-includes/link-template.php b/wp-includes/link-template.php index 74da3e74..a9f87d6e 100644 --- a/wp-includes/link-template.php +++ b/wp-includes/link-template.php @@ -1,18 +1,41 @@ post_title) . '-' . $post->ID; + $title = sanitize_title( $post->post_title ) . '-' . $post->ID; echo ''; break; case 'id': @@ -42,8 +83,33 @@ function permalink_anchor($mode = 'id') { } } +/** + * Retrieve full permalink for current post or post ID. + * + * This function is an alias for get_permalink(). + * + * @since 3.9.0 + * + * @see get_permalink() + * + * @param int|WP_Post $id Optional. Post ID or post object. Default is the current post. + * @param bool $leavename Optional. Whether to keep post name or page name. Default false. + * @return string|bool The permalink URL or false if post does not exist. + */ +function get_the_permalink( $id = 0, $leavename = false ) { + return get_permalink( $id, $leavename ); +} -function get_permalink($id = 0, $leavename=false) { +/** + * Retrieve full permalink for current post or post ID. + * + * @since 1.0.0 + * + * @param int|WP_Post $id Optional. Post ID or post object. Default current post. + * @param bool $leavename Optional. Whether to keep post name or page name. Default false. + * @return string|bool The permalink URL or false if post does not exist. + */ +function get_permalink( $id = 0, $leavename = false ) { $rewritecode = array( '%year%', '%monthnum%', @@ -58,34 +124,69 @@ function get_permalink($id = 0, $leavename=false) { $leavename? '' : '%pagename%', ); - $post = &get_post($id); + 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 ( empty($post->ID) ) + return false; if ( $post->post_type == 'page' ) - return get_page_link($post->ID, $leavename); - elseif ($post->post_type == 'attachment') - return get_attachment_link($post->ID); + return get_page_link($post, $leavename, $sample); + elseif ( $post->post_type == 'attachment' ) + return get_attachment_link( $post, $leavename ); + elseif ( in_array($post->post_type, get_post_types( array('_builtin' => false) ) ) ) + return get_post_permalink($post, $leavename, $sample); $permalink = get_option('permalink_structure'); - if ( '' != $permalink && !in_array($post->post_status, array('draft', 'pending')) ) { + /** + * Filter the permalink structure for a post before token replacement occurs. + * + * Only applies to posts with post_type of 'post'. + * + * @since 3.0.0 + * + * @param string $permalink The site's permalink structure. + * @param WP_Post $post The post in question. + * @param bool $leavename Whether to keep the post name. + */ + $permalink = apply_filters( 'pre_post_link', $permalink, $post, $leavename ); + + if ( '' != $permalink && !in_array($post->post_status, array('draft', 'pending', 'auto-draft')) ) { $unixtime = strtotime($post->post_date); $category = ''; if ( strpos($permalink, '%category%') !== false ) { $cats = get_the_category($post->ID); - if ( $cats ) + 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; + /** + * Filter the category that gets used in the %category% permalink token. + * + * @since 3.5.0 + * + * @param stdClass $cat The category to use in the permalink. + * @param array $cats Array of all categories associated with the post. + * @param WP_Post $post The post in question. + */ + $category_object = apply_filters( 'post_link_category', $cats[0], $cats, $post ); + + $category_object = get_term( $category_object, 'category' ); + $category = $category_object->slug; + if ( $parent = $category_object->parent ) + $category = get_category_parents($parent, false, '/', true) . $category; + } // show default category in permalinks, without // having to assign it explicitly if ( empty($category) ) { - $default_category = get_category( get_option( 'default_category' ) ); - $category = is_wp_error( $default_category ) ? '' : $default_category->slug; + $default_category = get_term( get_option( 'default_category' ), 'category' ); + $category = is_wp_error( $default_category ) ? '' : $default_category->slug; } } @@ -110,139 +211,365 @@ function get_permalink($id = 0, $leavename=false) { $author, $post->post_name, ); - $permalink = get_option('home') . str_replace($rewritecode, $rewritereplace, $permalink); + $permalink = home_url( str_replace($rewritecode, $rewritereplace, $permalink) ); $permalink = user_trailingslashit($permalink, 'single'); - return apply_filters('post_link', $permalink, $post); } else { // if they're not using the fancy permalink option - $permalink = get_option('home') . '/?p=' . $post->ID; - return apply_filters('post_link', $permalink, $post); + $permalink = home_url('?p=' . $post->ID); } -} -// get permalink from post ID -function post_permalink($post_id = 0, $deprecated = '') { - return get_permalink($post_id); + /** + * Filter the permalink for a post. + * + * Only applies to posts with post_type of 'post'. + * + * @since 1.5.0 + * + * @param string $permalink The post's permalink. + * @param WP_Post $post The post in question. + * @param bool $leavename Whether to keep the post name. + */ + return apply_filters( 'post_link', $permalink, $post, $leavename ); } -// Respects page_on_front. Use this one. -function get_page_link($id = false, $leavename = false) { - global $post; +/** + * 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 The post permalink. + */ +function get_post_permalink( $id = 0, $leavename = false, $sample = false ) { + global $wp_rewrite; + + $post = get_post($id); - $id = (int) $id; - if ( !$id ) - $id = (int) $post->ID; + if ( is_wp_error( $post ) ) + return $post; - if ( 'page' == get_option('show_on_front') && $id == get_option('page_on_front') ) - $link = get_option('home'); - else - $link = _get_page_link( $id , $leavename ); + $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 ( $post_type->hierarchical ) { + $slug = get_page_uri( $id ); + } - return apply_filters('page_link', $link, $id); + if ( !empty($post_link) && ( !$draft_or_pending || $sample ) ) { + if ( ! $leavename ) { + $post_link = str_replace("%$post->post_type%", $slug, $post_link); + } + $post_link = home_url( user_trailingslashit($post_link) ); + } else { + if ( $post_type->query_var && ( isset($post->post_status) && !$draft_or_pending ) ) + $post_link = add_query_arg($post_type->query_var, $slug, ''); + else + $post_link = add_query_arg(array('post_type' => $post->post_type, 'p' => $post->ID), ''); + $post_link = home_url($post_link); + } + + /** + * Filter the permalink for a post with a custom post type. + * + * @since 3.0.0 + * + * @param string $post_link The post's permalink. + * @param WP_Post $post The post in question. + * @param bool $leavename Whether to keep the post name. + * @param bool $sample Is it a sample permalink. + */ + return apply_filters( 'post_type_link', $post_link, $post, $leavename, $sample ); +} + +/** + * Retrieve permalink from post ID. + * + * @since 1.0.0 + * + * @param int|WP_Post $post_id Optional. Post ID or WP_Post object. Default is global $post. + * @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); } -// Ignores page_on_front. Internal use only. -function _get_page_link( $id = false, $leavename = false ) { - global $post, $wp_rewrite; +/** + * 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 The page permalink. + */ +function get_page_link( $post = false, $leavename = false, $sample = false ) { + $post = get_post( $post ); - if ( !$id ) - $id = (int) $post->ID; + if ( 'page' == get_option( 'show_on_front' ) && $post->ID == get_option( 'page_on_front' ) ) + $link = home_url('/'); else - $post = &get_post($id); + $link = _get_page_link( $post, $leavename, $sample ); + + /** + * Filter the permalink for a page. + * + * @since 1.5.0 + * + * @param string $link The page's permalink. + * @param int $post_id The ID of the page. + * @param bool $sample Is it a sample permalink. + */ + return apply_filters( 'page_link', $link, $post->ID, $sample ); +} + +/** + * 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 The page permalink. + */ +function _get_page_link( $post = false, $leavename = false, $sample = false ) { + global $wp_rewrite; + + $post = get_post( $post ); - $pagestruct = $wp_rewrite->get_page_permastruct(); + $draft_or_pending = in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft' ) ); - if ( '' != $pagestruct && isset($post->post_status) && 'draft' != $post->post_status ) { - $link = get_page_uri($id); - $link = ( $leavename ) ? $pagestruct : str_replace('%pagename%', $link, $pagestruct); - $link = get_option('home') . "/$link"; + $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 { - $link = get_option('home') . "/?page_id=$id"; + $link = home_url( '?page_id=' . $post->ID ); } - return apply_filters( '_get_page_link', $link, $id ); + /** + * Filter the permalink for a non-page_on_front page. + * + * @since 2.1.0 + * + * @param string $link The page's permalink. + * @param int $post_id The ID of the page. + */ + return apply_filters( '_get_page_link', $link, $post->ID ); } -function get_attachment_link($id = false) { - global $post, $wp_rewrite; +/** + * 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 The attachment permalink. + */ +function get_attachment_link( $post = null, $leavename = false ) { + global $wp_rewrite; $link = false; - if (! $id) { - $id = (int) $post->ID; - } + $post = get_post( $post ); + $parent = ( $post->post_parent > 0 && $post->post_parent != $post->ID ) ? get_post( $post->post_parent ) : false; - $object = get_post($id); - if ( $wp_rewrite->using_permalinks() && ($object->post_parent > 0) && ($object->post_parent != $id) ) { - $parent = get_post($object->post_parent); + if ( $wp_rewrite->using_permalinks() && $parent ) { if ( 'page' == $parent->post_type ) - $parentlink = _get_page_link( $object->post_parent ); // Ignores page_on_front + $parentlink = _get_page_link( $post->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 + $parentlink = get_permalink( $post->post_parent ); + + if ( is_numeric($post->post_name) || false !== strpos(get_option('permalink_structure'), '%category%') ) + $name = 'attachment/' . $post->post_name; // // is paged so we use the explicit attachment marker else - $name = $object->post_name; - if (strpos($parentlink, '?') === false) - $link = trailingslashit($parentlink) . $name . '/'; - } + $name = $post->post_name; - if (! $link ) { - $link = get_bloginfo('url') . "/?attachment_id=$id"; + if ( strpos($parentlink, '?') === false ) + $link = user_trailingslashit( trailingslashit($parentlink) . '%postname%' ); + + if ( ! $leavename ) + $link = str_replace( '%postname%', $name, $link ); } - return apply_filters('attachment_link', $link, $id); + if ( ! $link ) + $link = home_url( '/?attachment_id=' . $post->ID ); + + /** + * Filter the permalink for an attachment. + * + * @since 2.0.0 + * + * @param string $link The attachment's permalink. + * @param int $post_id Attachment ID. + */ + return apply_filters( 'attachment_link', $link, $post->ID ); } +/** + * Retrieve the permalink for the year archives. + * + * @since 1.5.0 + * + * @param int|bool $year False for current year or year for permalink. + * @return string The permalink for the specified year archive. + */ function get_year_link($year) { global $wp_rewrite; if ( !$year ) - $year = gmdate('Y', time()+(get_option('gmt_offset') * 3600)); + $year = gmdate('Y', current_time('timestamp')); $yearlink = $wp_rewrite->get_year_permastruct(); if ( !empty($yearlink) ) { $yearlink = str_replace('%year%', $year, $yearlink); - return apply_filters('year_link', get_option('home') . user_trailingslashit($yearlink, 'year'), $year); + $yearlink = home_url( user_trailingslashit( $yearlink, 'year' ) ); } else { - return apply_filters('year_link', get_option('home') . '/?m=' . $year, $year); + $yearlink = home_url( '?m=' . $year ); } + + /** + * Filter the year archive permalink. + * + * @since 1.5.0 + * + * @param string $yearlink Permalink for the year archive. + * @param int $year Year for the archive. + */ + return apply_filters( 'year_link', $yearlink, $year ); } +/** + * 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 $month False for current month. Integer of month. + * @return string The permalink for the specified month and year archive. + */ function get_month_link($year, $month) { global $wp_rewrite; if ( !$year ) - $year = gmdate('Y', time()+(get_option('gmt_offset') * 3600)); + $year = gmdate('Y', current_time('timestamp')); if ( !$month ) - $month = gmdate('m', time()+(get_option('gmt_offset') * 3600)); + $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), $monthlink); - return apply_filters('month_link', get_option('home') . user_trailingslashit($monthlink, 'month'), $year, $month); + $monthlink = home_url( user_trailingslashit( $monthlink, 'month' ) ); } else { - return apply_filters('month_link', get_option('home') . '/?m=' . $year . zeroise($month, 2), $year, $month); + $monthlink = home_url( '?m=' . $year . zeroise( $month, 2 ) ); } + + /** + * Filter the month archive permalink. + * + * @since 1.5.0 + * + * @param string $monthlink Permalink for the month archive. + * @param int $year Year for the archive. + * @param int $month The month for the archive. + */ + return apply_filters( 'month_link', $monthlink, $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 $day False for current day. Integer of day. + * @return string The permalink for the specified day, month, and year archive. + */ function get_day_link($year, $month, $day) { global $wp_rewrite; if ( !$year ) - $year = gmdate('Y', time()+(get_option('gmt_offset') * 3600)); + $year = gmdate('Y', current_time('timestamp')); if ( !$month ) - $month = gmdate('m', time()+(get_option('gmt_offset') * 3600)); + $month = gmdate('m', current_time('timestamp')); if ( !$day ) - $day = gmdate('j', time()+(get_option('gmt_offset') * 3600)); + $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), $daylink); - return apply_filters('day_link', get_option('home') . user_trailingslashit($daylink, 'day'), $year, $month, $day); + $daylink = home_url( user_trailingslashit( $daylink, 'day' ) ); } else { - return apply_filters('day_link', get_option('home') . '/?m=' . $year . zeroise($month, 2) . zeroise($day, 2), $year, $month, $day); + $daylink = home_url( '?m=' . $year . zeroise( $month, 2 ) . zeroise( $day, 2 ) ); } + + /** + * Filter the day archive permalink. + * + * @since 1.5.0 + * + * @param string $daylink Permalink for the day archive. + * @param int $year Year for the archive. + * @param int $month Month for the archive. + * @param int $day The day for the archive. + */ + return apply_filters( 'day_link', $daylink, $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 = '' . $anchor . ''; + + /** + * Filter the feed link anchor tag. + * + * @since 3.0.0 + * + * @param string $link The complete anchor tag for a feed link. + * @param string $feed The feed type, or an empty string for the + * default feed type. + */ + echo apply_filters( 'the_feed_link', $link, $feed ); +} + +/** + * Retrieve the permalink for the feed type. + * + * @since 1.5.0 + * + * @param string $feed Optional, defaults to default feed. Feed type. + * @return string The feed permalink. + */ function get_feed_link($feed = '') { global $wp_rewrite; @@ -258,7 +585,7 @@ function get_feed_link($feed = '') { $permalink = str_replace('%feed%', $feed, $permalink); $permalink = preg_replace('#/+#', '/', "/$permalink"); - $output = get_option('home') . user_trailingslashit($permalink, 'feed'); + $output = home_url( user_trailingslashit($permalink, 'feed') ); } else { if ( empty($feed) ) $feed = get_default_feed(); @@ -266,59 +593,109 @@ function get_feed_link($feed = '') { if ( false !== strpos($feed, 'comments_') ) $feed = str_replace('comments_', 'comments-', $feed); - $output = get_option('home') . "/?feed={$feed}"; + $output = home_url("?feed={$feed}"); } - return apply_filters('feed_link', $output, $feed); + /** + * Filter the feed type permalink. + * + * @since 1.5.0 + * + * @param string $output The feed permalink. + * @param string $feed Feed type. + */ + return apply_filters( 'feed_link', $output, $feed ); } -function get_post_comments_feed_link($post_id = '', $feed = '') { - global $id; +/** + * Retrieve the permalink for the post comments feed. + * + * @since 2.2.0 + * + * @param int $post_id Optional. Post ID. + * @param string $feed Optional. Feed type. + * @return string The permalink for the comments feed for the given post. + */ +function get_post_comments_feed_link($post_id = 0, $feed = '') { + $post_id = absint( $post_id ); - if ( empty($post_id) ) - $post_id = (int) $id; + if ( ! $post_id ) + $post_id = get_the_ID(); - if ( empty($feed) ) + if ( empty( $feed ) ) $feed = get_default_feed(); if ( '' != get_option('permalink_structure') ) { - $url = trailingslashit( get_permalink($post_id) ) . 'feed'; + 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 ) - $url = get_option('home') . "/?feed=$feed&page_id=$post_id"; + $url = add_query_arg( array( 'feed' => $feed, 'page_id' => $post_id ), home_url( '/' ) ); else - $url = get_option('home') . "/?feed=$feed&p=$post_id"; + $url = add_query_arg( array( 'feed' => $feed, 'p' => $post_id ), home_url( '/' ) ); } - return apply_filters('post_comments_feed_link', $url); + /** + * Filter the post comments feed permalink. + * + * @since 1.5.1 + * + * @param string $url Post comments feed permalink. + */ + return apply_filters( 'post_comments_feed_link', $url ); } -/** post_comments_feed_link() - Output the comment feed link for a post. +/** + * 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. + * 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 + * @since 2.5.0 * - * @param string Descriptive text - * @param int Optional post ID. Default to current post. - * @return string Link to the comment feed for the current post + * @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); + $url = esc_url( get_post_comments_feed_link( $post_id, $feed ) ); if ( empty($link_text) ) $link_text = __('Comments Feed'); - echo "$link_text"; + /** + * Filter the post comment feed link anchor tag. + * + * @since 2.8.0 + * + * @param string $link The complete anchor tag for the comment feed link. + * @param int $post_id Post ID. + * @param string $feed The feed type, or an empty string for the default feed type. + */ + echo apply_filters( 'post_comments_feed_link_html', "$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. + * + * @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'); @@ -327,235 +704,816 @@ function get_author_feed_link( $author_id, $feed = '' ) { $feed = get_default_feed(); if ( '' == $permalink_structure ) { - $link = get_option('home') . '?feed=rss2&author=' . $author_id; + $link = home_url("?feed=$feed&author=" . $author_id); } else { $link = get_author_posts_url($author_id); - $link = trailingslashit($link) . user_trailingslashit('feed', 'feed'); + 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); + /** + * Filter the feed link for a given author. + * + * @since 1.5.1 + * + * @param string $link The author feed link. + * @param string $feed Feed type. + */ + $link = apply_filters( 'author_feed_link', $link, $feed ); return $link; } -/** get_category_feed_link() - Get the feed link for a given category +/** + * 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. + * 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 + * @since 2.5.0 * - * @param int $cat_id ID of a category - * @param string $feed Feed type - * @return string Link to the feed for the category specified by $cat_id + * @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) $cat_id; + return get_term_feed_link($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 3.0.0 + * + * @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; - $category = get_category($cat_id); + $term = get_term( $term_id, $taxonomy ); - if ( empty($category) || is_wp_error($category) ) + if ( empty( $term ) || is_wp_error( $term ) ) return false; - if ( empty($feed) ) + if ( empty( $feed ) ) $feed = get_default_feed(); - $permalink_structure = get_option('permalink_structure'); + $permalink_structure = get_option( 'permalink_structure' ); if ( '' == $permalink_structure ) { - $link = get_option('home') . "?feed=$feed&cat=" . $cat_id; + 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 { - $link = get_category_link($cat_id); - if( $feed == get_default_feed() ) + $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'); + $link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' ); } - $link = apply_filters('category_feed_link', $link, $feed); + if ( 'category' == $taxonomy ) { + /** + * Filter the category feed link. + * + * @since 1.5.1 + * + * @param string $link The category feed link. + * @param string $feed Feed type. + */ + $link = apply_filters( 'category_feed_link', $link, $feed ); + } elseif ( 'post_tag' == $taxonomy ) { + /** + * Filter the post tag feed link. + * + * @since 2.3.0 + * + * @param string $link The tag feed link. + * @param string $feed Feed type. + */ + $link = apply_filters( 'tag_feed_link', $link, $feed ); + } else { + /** + * Filter the feed link for a taxonomy other than 'category' or 'post_tag'. + * + * @since 3.0.0 + * + * @param string $link The taxonomy feed link. + * @param string $feed Feed type. + * @param string $feed The taxonomy name. + */ + $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 $feed Optional. Feed type. + * @return string The feed permalink for the given tag. + */ function get_tag_feed_link($tag_id, $feed = '') { - $tag_id = (int) $tag_id; + return get_term_feed_link($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 The edit tag link URL for the given tag. + */ +function get_edit_tag_link( $tag_id, $taxonomy = 'post_tag' ) { + /** + * Filter the edit link for a tag (or term in another taxonomy). + * + * @since 2.7.0 + * + * @param string $link The term edit link. + */ + return apply_filters( 'get_edit_tag_link', get_edit_term_link( $tag_id, $taxonomy ) ); +} - $tag = get_tag($tag_id); +/** + * 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 ); + + /** + * Filter the anchor tag for the edit link for a tag (or term in another taxonomy). + * + * @since 2.7.0 + * + * @param string $link The anchor tag for the edit link. + */ + echo $before . apply_filters( 'edit_tag_link', $link ) . $after; +} - if ( empty($tag) || is_wp_error($tag) ) - return false; +/** + * 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 The edit term link URL for the given term. + */ +function get_edit_term_link( $term_id, $taxonomy, $object_type = '' ) { + $tax = get_taxonomy( $taxonomy ); + if ( !current_user_can( $tax->cap->edit_terms ) ) + return; - $permalink_structure = get_option('permalink_structure'); + $term = get_term( $term_id, $taxonomy ); - if ( empty($feed) ) - $feed = get_default_feed(); + $args = array( + 'action' => 'edit', + 'taxonomy' => $taxonomy, + 'tag_ID' => $term->term_id, + ); - if ( '' == $permalink_structure ) { - $link = get_option('home') . "?feed=$feed&tag=" . $tag->slug; + if ( $object_type ) + $args['post_type'] = $object_type; + + $location = add_query_arg( $args, admin_url( 'edit-tags.php' ) ); + + /** + * Filter the edit link for a term. + * + * @since 3.1.0 + * + * @param string $location The edit link. + * @param int $term_id Term ID. + * @param string $taxonomy Taxonomy name. + * @param string $object_type The object type (eg. the post type). + */ + 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 = '' . $link . ''; + + /** + * Filter the anchor tag for the edit link of a term. + * + * @since 3.1.0 + * + * @param string $link The anchor tag for the edit link. + * @param int $term_id Term ID. + */ + $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 The search permalink. + */ +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 { - $link = get_tag_link($tag->term_id); - if ( $feed == get_default_feed() ) - $feed_link = 'feed'; - else - $feed_link = "feed/$feed"; - $link = $link . user_trailingslashit($feed_link, 'feed'); + $search = urlencode($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' ) ); } - $link = apply_filters('tag_feed_link', $link, $feed); - - return $link; + /** + * Filter the search permalink. + * + * @since 3.0.0 + * + * @param string $link Search permalink. + * @param string $search The URL-encoded search term. + */ + 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 $feed Optional. Feed type. + * @return string The search results feed permalink. + */ function get_search_feed_link($search_query = '', $feed = '') { - if ( empty($search_query) ) - $search = attribute_escape(get_search_query()); - else - $search = attribute_escape(stripslashes($search_query)); + global $wp_rewrite; + $link = get_search_link($search_query); if ( empty($feed) ) $feed = get_default_feed(); - $link = get_option('home') . "?s=$search&feed=$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); + /** + * Filter the search feed link. + * + * @since 2.5.0 + * + * @param string $link Search feed link. + * @param string $feed Feed type. + * @param string $type The search type. One of 'posts' or 'comments'. + */ + $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 $feed Optional. Feed type. + * @return string The comments feed search results permalink. + */ function get_search_comments_feed_link($search_query = '', $feed = '') { - if ( empty($search_query) ) - $search = attribute_escape(get_search_query()); - else - $search = attribute_escape(stripslashes($search_query)); + global $wp_rewrite; if ( empty($feed) ) $feed = get_default_feed(); - $link = get_option('home') . "?s=$search&feed=comments-$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); + /** This filter is documented in wp-includes/link-template.php */ + $link = apply_filters('search_feed_link', $link, $feed, 'comments'); return $link; } -function get_edit_post_link( $id = 0 ) { - if ( !$post = &get_post( $id ) ) - return; +/** + * Retrieve the permalink for a post type archive. + * + * @since 3.1.0 + * + * @param string $post_type Post type + * @return string The post type archive permalink. + */ +function get_post_type_archive_link( $post_type ) { + global $wp_rewrite; + if ( ! $post_type_obj = get_post_type_object( $post_type ) ) + return false; - 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; - default : - if ( !current_user_can( 'edit_post', $post->ID ) ) - return; - $file = 'post'; - $var = 'post'; - break; - endswitch; - - return apply_filters( 'get_edit_post_link', get_bloginfo( 'wpurl' ) . "/wp-admin/$file.php?action=edit&$var=$post->ID", $post->ID ); -} - -function edit_post_link( $link = 'Edit This', $before = '', $after = '' ) { - global $post; - - if ( $post->post_type == 'page' ) { - if ( !current_user_can( 'edit_page', $post->ID ) ) - return; + 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 { - if ( !current_user_can( 'edit_post', $post->ID ) ) - return; + $link = home_url( '?post_type=' . $post_type ); } - $link = '' . $link . ''; - echo $before . apply_filters( 'edit_post_link', $link, $post->ID ) . $after; + /** + * Filter the post type archive permalink. + * + * @since 3.1.0 + * + * @param string $link The post type archive permalink. + * @param string $post_type Post type name. + */ + return apply_filters( 'post_type_archive_link', $link, $post_type ); } -function get_edit_comment_link( $comment_id = 0 ) { - $comment = &get_comment( $comment_id ); - $post = &get_post( $comment->comment_post_ID ); +/** + * 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 The post type feed permalink. + */ +function get_post_type_archive_feed_link( $post_type, $feed = '' ) { + $default_feed = get_default_feed(); + if ( empty( $feed ) ) + $feed = $default_feed; - if ( $post->post_type == 'page' ) { - if ( !current_user_can( 'edit_page', $post->ID ) ) - return; + 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 { - if ( !current_user_can( 'edit_post', $post->ID ) ) - return; + $link = add_query_arg( 'feed', $feed, $link ); } - $location = get_bloginfo( 'wpurl' ) . '/wp-admin/comment.php?action=editcomment&c=' . $comment->comment_ID; - return apply_filters( 'get_edit_comment_link', $location ); + /** + * Filter the post type archive feed link. + * + * @since 3.1.0 + * + * @param string $link The post type archive feed link. + * @param string $feed Feed type. + */ + return apply_filters( 'post_type_archive_feed_link', $link, $feed ); } -function edit_comment_link( $link = 'Edit This', $before = '', $after = '' ) { - global $comment, $post; +/** + * 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 The edit post link for the given post. + */ +function get_edit_post_link( $id = 0, $context = 'display' ) { + if ( ! $post = get_post( $id ) ) + return; - if ( $post->post_type == 'attachment' ) { - } elseif ( $post->post_type == 'page' ) { - if ( !current_user_can( 'edit_page', $post->ID ) ) - return; - } else { - if ( !current_user_can( 'edit_post', $post->ID ) ) - return; - } + if ( 'revision' === $post->post_type ) + $action = ''; + elseif ( 'display' == $context ) + $action = '&action=edit'; + else + $action = '&action=edit'; - $link = '' . $link . ''; - echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID ) . $after; + $post_type_object = get_post_type_object( $post->post_type ); + if ( !$post_type_object ) + return; + + if ( !current_user_can( 'edit_post', $post->ID ) ) + return; + + /** + * Filter the post edit link. + * + * @since 2.3.0 + * + * @param string $link The edit link. + * @param int $post_id Post ID. + * @param string $context The link context. If set to 'display' then ampersands + * are encoded. + */ + 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 $text 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( $text = null, $before = '', $after = '', $id = 0 ) { + if ( ! $post = get_post( $id ) ) { + return; + } + + if ( ! $url = get_edit_post_link( $post->ID ) ) { + return; + } + + if ( null === $text ) { + $text = __( 'Edit This' ); + } + + $link = '' . $text . ''; + + /** + * Filter the post edit link anchor tag. + * + * @since 2.3.0 + * + * @param string $link Anchor tag for the edit link. + * @param int $post_id Post ID. + * @param string $text Anchor text. + */ + echo $before . apply_filters( 'edit_post_link', $link, $post->ID, $text ) . $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 The delete post link URL for the given post. + */ +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 ) ) ); + + /** + * Filter the post delete link. + * + * @since 2.9.0 + * + * @param string $link The delete link. + * @param int $post_id Post ID. + * @param bool $force_delete Whether to bypass the trash and force deletion. Default false. + */ + 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 The edit comment link URL for the given comment. + */ +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; + + /** + * Filter the comment edit link. + * + * @since 2.3.0 + * + * @param string $location The edit link. + */ + return apply_filters( 'get_edit_comment_link', $location ); +} + +/** + * Display edit comment link with formatting. + * + * @since 1.0.0 + * + * @param string $text Optional. Anchor text. + * @param string $before Optional. Display before edit link. + * @param string $after Optional. Display after edit link. + */ +function edit_comment_link( $text = null, $before = '', $after = '' ) { + global $comment; + + if ( ! current_user_can( 'edit_comment', $comment->comment_ID ) ) { + return; + } + + if ( null === $text ) { + $text = __( 'Edit This' ); + } + + $link = '' . $text . ''; + + /** + * Filter the comment edit link anchor tag. + * + * @since 2.3.0 + * + * @param string $link Anchor tag for the edit link. + * @param int $comment_id Comment ID. + * @param string $text Anchor text. + */ + echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID, $text ) . $after; +} + +/** + * Display edit bookmark (literally a URL external to blog) link. + * + * @since 2.7.0 + * + * @param int $link Optional. Bookmark ID. + * @return string The edit bookmark link URL. + */ +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; + + /** + * Filter the bookmark (link) edit link. + * + * @since 2.7.0 + * + * @param string $location The edit link. + * @param int $link_id Bookmark 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 . ''; + + /** + * Filter the bookmark edit link anchor tag. + * + * @since 2.7.0 + * + * @param string $link Anchor tag for the edit link. + * @param int $link_id Bookmark ID. + */ + 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' ) ); + + /** + * Filter the user edit link. + * + * @since 3.5.0 + * + * @param string $link The edit link. + * @param int $user_id User ID. + */ + return apply_filters( 'get_edit_user_link', $link, $user->ID ); } // Navigation links -function get_previous_post($in_same_cat = false, $excluded_categories = '') { - return get_adjacent_post($in_same_cat, $excluded_categories); +/** + * Retrieve previous post that is adjacent to current post. + * + * @since 1.5.0 + * + * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + * @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_term = false, $excluded_terms = '', $taxonomy = 'category' ) { + return get_adjacent_post( $in_same_term, $excluded_terms, true, $taxonomy ); } -function get_next_post($in_same_cat = false, $excluded_categories = '') { - return get_adjacent_post($in_same_cat, $excluded_categories, false); +/** + * Retrieve next post that is adjacent to current post. + * + * @since 1.5.0 + * + * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + * @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_term = false, $excluded_terms = '', $taxonomy = 'category' ) { + return get_adjacent_post( $in_same_term, $excluded_terms, false, $taxonomy ); } -function get_adjacent_post($in_same_cat = false, $excluded_categories = '', $previous = true) { - global $post, $wpdb; +/** + * Retrieve adjacent post. + * + * Can either be next or previous post. + * + * @since 2.5.0 + * + * @param bool $in_same_term Optional. Whether post should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param bool $previous Optional. Whether to retrieve previous post. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + * @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_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { + global $wpdb; - if( empty($post) || !is_single() || is_attachment() ) + if ( ( ! $post = get_post() ) || ! taxonomy_exists( $taxonomy ) ) return null; $current_post_date = $post->post_date; $join = ''; - $posts_in_ex_cats_sql = ''; - if ( $in_same_cat || !empty($excluded_categories) ) { + $where = ''; + + if ( $in_same_term || ! empty( $excluded_terms ) ) { $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"; + $where = $wpdb->prepare( "AND tt.taxonomy = %s", $taxonomy ); + + if ( ! empty( $excluded_terms ) && ! is_array( $excluded_terms ) ) { + // back-compat, $excluded_terms used to be $excluded_terms with IDs separated by " and " + if ( false !== strpos( $excluded_terms, ' and ' ) ) { + _deprecated_argument( __FUNCTION__, '3.3', sprintf( __( 'Use commas instead of %s to separate excluded terms.' ), "'and'" ) ); + $excluded_terms = explode( ' and ', $excluded_terms ); + } else { + $excluded_terms = explode( ',', $excluded_terms ); + } - 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, ',') . ')'; + $excluded_terms = array_map( 'intval', $excluded_terms ); } - $posts_in_ex_cats_sql = "AND tt.taxonomy = 'category'"; - if ( !empty($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 ( $in_same_term ) { + if ( ! is_object_in_taxonomy( $post->post_type, $taxonomy ) ) + return ''; + $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) ); - if ( !empty($excluded_categories) ) { - $posts_in_ex_cats_sql = " AND tt.taxonomy = 'category' AND tt.term_id NOT IN (" . implode($excluded_categories, ',') . ')'; - } + // Remove any exclusions from the term array to include. + $term_array = array_diff( $term_array, (array) $excluded_terms ); + $term_array = array_map( 'intval', $term_array ); + + if ( ! $term_array || is_wp_error( $term_array ) ) + return ''; + + $where .= " AND tt.term_id IN (" . implode( ',', $term_array ) . ")"; + } + + if ( ! empty( $excluded_terms ) ) { + $where .= " AND p.ID NOT IN ( SELECT tr.object_id FROM $wpdb->term_relationships tr LEFT JOIN $wpdb->term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id) WHERE tt.term_id IN (" . implode( $excluded_terms, ',' ) . ') )'; } } @@ -563,61 +1521,403 @@ function get_adjacent_post($in_same_cat = false, $excluded_categories = '', $pre $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 = 'post' AND p.post_status = 'publish' $posts_in_ex_cats_sql", $current_post_date), $in_same_cat, $excluded_categories ); + /** + * Filter the JOIN clause in the SQL for an adjacent post query. + * + * The dynamic portion of the hook name, `$adjacent`, refers to the type + * of adjacency, 'next' or 'previous'. + * + * @since 2.5.0 + * + * @param string $join The JOIN clause in the SQL. + * @param bool $in_same_term Whether post should be in a same taxonomy term. + * @param array $excluded_terms Array of excluded term IDs. + */ + $join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_term, $excluded_terms ); + + /** + * Filter the WHERE clause in the SQL for an adjacent post query. + * + * The dynamic portion of the hook name, `$adjacent`, refers to the type + * of adjacency, 'next' or 'previous'. + * + * @since 2.5.0 + * + * @param string $where The `WHERE` clause in the SQL. + * @param bool $in_same_term Whether post should be in a same taxonomy term. + * @param array $excluded_terms Array of excluded term IDs. + */ + $where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare( "WHERE p.post_date $op %s AND p.post_type = %s AND p.post_status = 'publish' $where", $current_post_date, $post->post_type ), $in_same_term, $excluded_terms ); + + /** + * Filter the ORDER BY clause in the SQL for an adjacent post query. + * + * The dynamic portion of the hook name, `$adjacent`, refers to the type + * of adjacency, 'next' or 'previous'. + * + * @since 2.5.0 + * + * @param string $order_by The `ORDER BY` clause in the SQL. + */ $sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1" ); - return $wpdb->get_row("SELECT p.* FROM $wpdb->posts AS p $join $where $sort"); + $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_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param bool $previous Optional. Whether to display link to previous or next post. Default true. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + * @return string The adjacent post relational link URL. + */ +function get_adjacent_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { + if ( $previous && is_attachment() && $post = get_post() ) + $post = get_post( $post->post_parent ); + else + $post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy ); + + 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 ? "\n"; + + $adjacent = $previous ? 'previous' : 'next'; + + /** + * Filter the adjacent post relational link. + * + * The dynamic portion of the hook name, `$adjacent`, refers to the type + * of adjacency, 'next' or 'previous'. + * + * @since 2.8.0 + * + * @param string $link The relational link. + */ + return apply_filters( "{$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_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + */ +function adjacent_posts_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { + echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy ); + echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy ); +} + +/** + * 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_single() || 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_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + */ +function next_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { + echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, false, $taxonomy ); +} + +/** + * 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_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. Default true. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + */ +function prev_post_rel_link( $title = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { + echo get_adjacent_post_rel_link( $title, $in_same_term, $excluded_terms, true, $taxonomy ); +} + +/** + * Retrieve boundary post. + * + * Boundary being either the first or last post by publish date within the constraints specified + * by $in_same_term or $excluded_terms. + * + * @since 2.8.0 + * + * @param bool $in_same_term Optional. Whether returned post should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param bool $start Optional. Whether to retrieve first or last post. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + * @return mixed Array containing the boundary post object if successful, null otherwise. + */ +function get_boundary_post( $in_same_term = false, $excluded_terms = '', $start = true, $taxonomy = 'category' ) { + $post = get_post(); + if ( ! $post || ! is_single() || is_attachment() || ! taxonomy_exists( $taxonomy ) ) + return null; + + $query_args = array( + 'posts_per_page' => 1, + 'order' => $start ? 'ASC' : 'DESC', + 'update_post_term_cache' => false, + 'update_post_meta_cache' => false + ); + + $term_array = array(); + + if ( ! is_array( $excluded_terms ) ) { + if ( ! empty( $excluded_terms ) ) + $excluded_terms = explode( ',', $excluded_terms ); + else + $excluded_terms = array(); + } + + if ( $in_same_term || ! empty( $excluded_terms ) ) { + if ( $in_same_term ) + $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'ids' ) ); + + if ( ! empty( $excluded_terms ) ) { + $excluded_terms = array_map( 'intval', $excluded_terms ); + $excluded_terms = array_diff( $excluded_terms, $term_array ); + + $inverse_terms = array(); + foreach ( $excluded_terms as $excluded_term ) + $inverse_terms[] = $excluded_term * -1; + $excluded_terms = $inverse_terms; + } + + $query_args[ 'tax_query' ] = array( array( + 'taxonomy' => $taxonomy, + 'terms' => array_merge( $term_array, $excluded_terms ) + ) ); + } + + return get_posts( $query_args ); +} + +/* + * 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_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + * @return string The link URL of the previous post in relation to the current post. + */ +function get_previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { + return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, true, $taxonomy ); +} + +/** + * Display previous post link that is adjacent to the current post. + * + * @since 1.5.0 + * @see get_previous_post_link() + * + * @param string $format Optional. Link anchor format. + * @param string $link Optional. Link permalink format. + * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + */ +function previous_post_link( $format = '« %link', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { + echo get_previous_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy ); } -function previous_post_link($format='« %link', $link='%title', $in_same_cat = false, $excluded_categories = '') { - adjacent_post_link($format, $link, $in_same_cat, $excluded_categories, true); +/** + * Get next 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_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + * @return string The link URL of the next post in relation to the current post. + */ +function get_next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { + return get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, false, $taxonomy ); } -function next_post_link($format='%link »', $link='%title', $in_same_cat = false, $excluded_categories = '') { - adjacent_post_link($format, $link, $in_same_cat, $excluded_categories, false); +/** + * Display next post link that is adjacent to the current post. + * + * @since 1.5.0 + * @see get_next_post_link() + * + * @param string $format Optional. Link anchor format. + * @param string $link Optional. Link permalink format. + * @param bool $in_same_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded term IDs. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + */ +function next_post_link( $format = '%link »', $link = '%title', $in_same_term = false, $excluded_terms = '', $taxonomy = 'category' ) { + echo get_next_post_link( $format, $link, $in_same_term, $excluded_terms, $taxonomy ); } -function adjacent_post_link($format, $link, $in_same_cat = false, $excluded_categories = '', $previous = true) { +/** + * 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_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded terms IDs. + * @param bool $previous Optional. Whether to display link to previous or next post. Default true. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + * @return string The link URL of the previous or next post in relation to the current post. + */ +function get_adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { if ( $previous && is_attachment() ) - $post = & get_post($GLOBALS['post']->post_parent); + $post = get_post( get_post()->post_parent ); else - $post = get_adjacent_post($in_same_cat, $excluded_categories, $previous); + $post = get_adjacent_post( $in_same_term, $excluded_terms, $previous, $taxonomy ); - if ( !$post ) - return; + if ( ! $post ) { + $output = ''; + } else { + $title = $post->post_title; + + if ( empty( $post->post_title ) ) + $title = $previous ? __( 'Previous Post' ) : __( 'Next Post' ); - $title = $post->post_title; + /** This filter is documented in wp-includes/post-template.php */ + $title = apply_filters( 'the_title', $title, $post->ID ); - if ( empty($post->post_title) ) - $title = $previous ? __('Previous Post') : __('Next Post'); + $date = mysql2date( get_option( 'date_format' ), $post->post_date ); + $rel = $previous ? 'prev' : 'next'; - $title = apply_filters('the_title', $title, $post); - $string = ''; - $link = str_replace('%title', $title, $link); - $link = $string . $link . ''; + $string = ''; + $inlink = str_replace( '%title', $title, $link ); + $inlink = str_replace( '%date', $date, $inlink ); + $inlink = $string . $inlink . ''; - $format = str_replace('%link', $link, $format); + $output = str_replace( '%link', $inlink, $format ); + } + + $adjacent = $previous ? 'previous' : 'next'; + + /** + * Filter the adjacent post link. + * + * The dynamic portion of the hook name, `$adjacent`, refers to the type + * of adjacency, 'next' or 'previous'. + * + * @since 2.6.0 + * + * @param string $output The adjacent post link. + * @param string $format Link anchor format. + * @param string $link Link permalink format. + * @param WP_Post $post The adjacent post. + */ + return apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post ); +} - echo $format; +/** + * 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_term Optional. Whether link should be in a same taxonomy term. + * @param array|string $excluded_terms Optional. Array or comma-separated list of excluded category IDs. + * @param bool $previous Optional. Whether to display link to previous or next post. Default true. + * @param string $taxonomy Optional. Taxonomy, if $in_same_term is true. Default 'category'. + */ +function adjacent_post_link( $format, $link, $in_same_term = false, $excluded_terms = '', $previous = true, $taxonomy = 'category' ) { + echo get_adjacent_post_link( $format, $link, $in_same_term, $excluded_terms, $previous, $taxonomy ); } -function get_pagenum_link($pagenum = 1) { +/** + * Retrieve links for page numbers. + * + * @since 1.5.0 + * + * @param int $pagenum Optional. Page ID. + * @param bool $escape Optional. Whether to escape the URL for display, with esc_url(). Defaults to true. +* Otherwise, prepares the URL with esc_url_raw(). + * @return string The link URL for the given page number. + */ +function get_pagenum_link($pagenum = 1, $escape = true ) { global $wp_rewrite; $pagenum = (int) $pagenum; $request = remove_query_arg( 'paged' ); - $home_root = parse_url(get_option('home')); + $home_root = parse_url(home_url()); $home_root = ( isset($home_root['path']) ) ? $home_root['path'] : ''; - $home_root = preg_quote( trailingslashit( $home_root ), '|' ); + $home_root = preg_quote( $home_root, '|' ); - $request = preg_replace('|^'. $home_root . '|', '', $request); + $request = preg_replace('|^'. $home_root . '|i', '', $request); $request = preg_replace('|^/+|', '', $request); if ( !$wp_rewrite->using_permalinks() || is_admin() ) { - $base = trailingslashit( get_bloginfo( 'home' ) ); + $base = trailingslashit( get_bloginfo( 'url' ) ); if ( $pagenum > 1 ) { $result = add_query_arg( 'paged', $pagenum, $base . $request ); @@ -635,27 +1935,47 @@ function get_pagenum_link($pagenum = 1) { $query_string = ''; } - $request = preg_replace( '|page/\d+/?$|', '', $request); - $request = preg_replace( '|^index\.php|', '', $request); + $request = preg_replace( "|$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 .= 'index.php/'; + $base .= $wp_rewrite->index . '/'; if ( $pagenum > 1 ) { - $request = ( ( !empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( 'page/' . $pagenum, 'paged' ); + $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); - - return $result; + /** + * Filter the page number link for the current request. + * + * @since 2.5.0 + * + * @param string $result The page number link. + */ + $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 $max_page Optional. Max pages. + * @return string The link URL for next posts page. + */ function get_next_posts_page_link($max_page = 0) { global $paged; @@ -668,66 +1988,1337 @@ function get_next_posts_page_link($max_page = 0) { } } -function next_posts($max_page = 0) { - echo clean_url(get_next_posts_page_link($max_page)); +/** + * Display or return the next posts page link. + * + * @since 0.71 + * + * @param int $max_page Optional. Max pages. + * @param boolean $echo Optional. Echo or return; + * @return string The link URL for next posts page if `$echo = false`. + */ +function next_posts( $max_page = 0, $echo = true ) { + $output = esc_url( get_next_posts_page_link( $max_page ) ); + + if ( $echo ) + echo $output; + else + return $output; } -function next_posts_link($label='Next Page »', $max_page=0) { +/** + * 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 HTML-formatted next posts page link. + */ +function get_next_posts_link( $label = null, $max_page = 0 ) { global $paged, $wp_query; - if ( !$max_page ) { + + 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) ) { - echo ''. preg_replace('/&([^#])(?![a-z]{1,8};)/', '&$1', $label) .''; - } -} -function get_previous_posts_page_link() { - global $paged; + if ( null === $label ) + $label = __( 'Next Page »' ); - if ( !is_single() ) { - $nextpage = intval($paged) - 1; - if ( $nextpage < 1 ) - $nextpage = 1; - return get_pagenum_link($nextpage); + if ( !is_single() && ( $nextpage <= $max_page ) ) { + /** + * Filter the anchor tag attributes for the next posts page link. + * + * @since 2.7.0 + * + * @param string $attributes Attributes for the anchor tag. + */ + $attr = apply_filters( 'next_posts_link_attributes', '' ); + + return '" . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $label) . ''; } } -function previous_posts() { - echo clean_url(get_previous_posts_page_link()); -} +/** + * Display the next posts page link. + * + * @since 0.71 + * + * @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, $max_page ); +} -function previous_posts_link($label='« Previous 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 The link for the previous posts page. + */ +function get_previous_posts_page_link() { global $paged; - if ( (!is_single()) && ($paged > 1) ) { - echo ''. preg_replace('/&([^#])(?![a-z]{1,8};)/', '&$1', $label) .''; + + if ( !is_single() ) { + $nextpage = intval($paged) - 1; + if ( $nextpage < 1 ) + $nextpage = 1; + return get_pagenum_link($nextpage); } } -function posts_nav_link($sep=' — ', $prelabel='« Previous Page', $nxtlabel='Next Page »') { +/** + * Display or return the previous posts page link. + * + * @since 0.71 + * + * @param boolean $echo Optional. Echo or return; + * @return string The previous posts page link if `$echo = false`. + */ +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 HTML-formatted previous page link. + */ +function get_previous_posts_link( $label = null ) { + global $paged; + + if ( null === $label ) + $label = __( '« Previous Page' ); + + if ( !is_single() && $paged > 1 ) { + /** + * Filter the anchor tag attributes for the previous posts page link. + * + * @since 2.7.0 + * + * @param string $attributes Attributes for the anchor tag. + */ + $attr = apply_filters( 'previous_posts_link_attributes', '' ); + return '". preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) .''; + } +} + +/** + * Display the previous posts page link. + * + * @since 0.71 + * + * @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 2.8.0 + * + * @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) { - $sep = ''; + $args['sep'] = ''; } if ( $max_num_pages > 1 ) { - previous_posts_link($prelabel); - echo preg_replace('/&([^#])(?![a-z]{1,8};)/', '&$1', $sep); - next_posts_link($nxtlabel); + $return = get_previous_posts_link($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); +} + +/** + * Return navigation to next/previous post when applicable. + * + * @since 4.1.0 + * + * @param array $args { + * Optional. Default post navigation arguments. Default empty array. + * + * @type string $prev_text Anchor text to display in the previous post link. Default `%title`. + * @type string $next_text Anchor text to display in the next post link. Default `%title`. + * @type string $screen_reader_text Screen reader text for nav element. Default 'Post navigation'. + * } + * @return string Markup for post links. + */ +function get_the_post_navigation( $args = array() ) { + $args = wp_parse_args( $args, array( + 'prev_text' => '%title', + 'next_text' => '%title', + 'screen_reader_text' => __( 'Post navigation' ), + ) ); + + $navigation = ''; + $previous = get_previous_post_link( '
%link
', $args['prev_text'] ); + $next = get_next_post_link( '
%link
', $args['next_text'] ); + + // Only add markup if there's somewhere to navigate to. + if ( $previous || $next ) { + $navigation = _navigation_markup( $previous . $next, 'post-navigation', $args['screen_reader_text'] ); + } + + return $navigation; +} + +/** + * Display navigation to next/previous post when applicable. + * + * @since 4.1.0 + * + * @param array $args Optional. See {@see get_the_post_navigation()} for available + * arguments. Default empty array. + */ +function the_post_navigation( $args = array() ) { + echo get_the_post_navigation( $args ); +} + +/** + * Return navigation to next/previous set of posts when applicable. + * + * @since 4.1.0 + * + * @global WP_Query $wp_query WordPress Query object. + * + * @param array $args { + * Optional. Default posts navigation arguments. Default empty array. + * + * @type string $prev_text Anchor text to display in the previous posts link. + * Default 'Older posts'. + * @type string $next_text Anchor text to display in the next posts link. + * Default 'Newer posts'. + * @type string $screen_reader_text Screen reader text for nav element. + * Default 'Posts navigation'. + * } + * @return string Markup for posts links. + */ +function get_the_posts_navigation( $args = array() ) { + $navigation = ''; + + // Don't print empty markup if there's only one page. + if ( $GLOBALS['wp_query']->max_num_pages > 1 ) { + $args = wp_parse_args( $args, array( + 'prev_text' => __( 'Older posts' ), + 'next_text' => __( 'Newer posts' ), + 'screen_reader_text' => __( 'Posts navigation' ), + ) ); + + $next_link = get_previous_posts_link( $args['next_text'] ); + $prev_link = get_next_posts_link( $args['prev_text'] ); + + if ( $prev_link ) { + $navigation .= '
' . $prev_link . '
'; + } + + if ( $next_link ) { + $navigation .= '
' . $next_link . '
'; + } + + $navigation = _navigation_markup( $navigation, 'posts-navigation', $args['screen_reader_text'] ); + } + + return $navigation; +} + +/** + * Display navigation to next/previous set of posts when applicable. + * + * @since 4.1.0 + * + * @param array $args Optional. See {@see get_the_posts_navigation()} for available + * arguments. Default empty array. + */ +function the_posts_navigation( $args = array() ) { + echo get_the_posts_navigation( $args ); +} + +/** + * Return a paginated navigation to next/previous set of posts, + * when applicable. + * + * @since 4.1.0 + * + * @param array $args { + * Optional. Default pagination arguments, {@see paginate_links()}. + * + * @type string $screen_reader_text Screen reader text for navigation element. + * Default 'Posts navigation'. + * } + * @return string Markup for pagination links. + */ +function get_the_posts_pagination( $args = array() ) { + $navigation = ''; + + // Don't print empty markup if there's only one page. + if ( $GLOBALS['wp_query']->max_num_pages > 1 ) { + $args = wp_parse_args( $args, array( + 'mid_size' => 1, + 'prev_text' => _x( 'Previous', 'previous post' ), + 'next_text' => _x( 'Next', 'next post' ), + 'screen_reader_text' => __( 'Posts navigation' ), + ) ); + + // Make sure we get a string back. Plain is the next best thing. + if ( isset( $args['type'] ) && 'array' == $args['type'] ) { + $args['type'] = 'plain'; + } + + // Set up paginated links. + $links = paginate_links( $args ); + + if ( $links ) { + $navigation = _navigation_markup( $links, 'pagination', $args['screen_reader_text'] ); } } + + return $navigation; +} + +/** + * Display a paginated navigation to next/previous set of posts, + * when applicable. + * + * @since 4.1.0 + * + * @param array $args Optional. See {@see get_the_posts_pagination()} for available arguments. + * Default empty array. + */ +function the_posts_pagination( $args = array() ) { + echo get_the_posts_pagination( $args ); +} + +/** + * Wraps passed links in navigational markup. + * + * @since 4.1.0 + * @access private + * + * @param string $links Navigational links. + * @param string $class Optional. Custom class for nav element. Default: 'posts-navigation'. + * @param string $screen_reader_text Optional. Screen reader text for nav element. Default: 'Posts navigation'. + * @return string Navigation template tag. + */ +function _navigation_markup( $links, $class = 'posts-navigation', $screen_reader_text = '' ) { + if ( empty( $screen_reader_text ) ) { + $screen_reader_text = __( 'Posts navigation' ); + } + + $template = ' + '; + + return sprintf( $template, sanitize_html_class( $class ), esc_html( $screen_reader_text ), $links ); } -?> +/** + * Retrieve comments page number link. + * + * @since 2.7.0 + * + * @param int $pagenum Optional. Page number. + * @param int $max_page Optional. The maximum number of comment pages. + * @return string The comments page number link URL. + */ +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'; + + /** + * Filter the comments page number link for the current request. + * + * @since 2.7.0 + * + * @param string $result The comments page number link. + */ + $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 HTML-formatted link for the next page of comments. + */ +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 »'); + + /** + * Filter the anchor tag attributes for the next comments page link. + * + * @since 2.7.0 + * + * @param string $attributes Attributes for the anchor tag. + */ + return ''. preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$1', $label) .''; +} + +/** + * 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 HTML-formatted link for the previous page of comments. + */ +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'); + + /** + * Filter the anchor tag attributes for the previous comments page link. + * + * @since 2.7.0 + * + * @param string $attributes Attributes for the anchor tag. + */ + return '' . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&$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_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 The Press This bookmarklet link URL. + */ +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); + + /** + * Filter the Press This bookmarklet link. + * + * @since 2.6.0 + * + * @param string $link The Press This bookmarklet link. + */ + return apply_filters( 'shortcut_link', $link ); +} + +/** + * Retrieve the home url for the current site. + * + * Returns the 'home' option with the appropriate protocol, 'https' if + * {@see is_ssl()} and 'http' otherwise. If `$scheme` is 'http' or 'https', + * `is_ssl()` is overridden. + * + * @since 3.0.0 + * + * @param string $path Optional. Path relative to the home url. Default empty. + * @param string $scheme Optional. Scheme to give the home url context. Accepts + * 'http', 'https', or 'relative'. Default null. + * @return string Home url link with optional path appended. +*/ +function home_url( $path = '', $scheme = null ) { + return get_home_url( null, $path, $scheme ); +} + +/** + * Retrieve the home url for a given site. + * + * Returns the 'home' option with the appropriate protocol, 'https' if + * {@see is_ssl()} and 'http' otherwise. If `$scheme` is 'http' or 'https', + * `is_ssl()` is + * overridden. + * + * @since 3.0.0 + * + * @param int $blog_id Optional. Blog ID. Default null (current blog). + * @param string $path Optional. Path relative to the home URL. Default empty. + * @param string|null $orig_scheme Optional. Scheme to give the home URL context. Accepts + * 'http', 'https', 'relative', or null. Default null. + * @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, '/' ); + + /** + * Filter the home URL. + * + * @since 3.0.0 + * + * @param string $url The complete home URL including scheme and path. + * @param string $path Path relative to the home URL. Blank string if no path is specified. + * @param string|null $orig_scheme Scheme to give the home URL context. Accepts 'http', 'https', 'relative' or null. + * @param int|null $blog_id Blog ID, or null for the current blog. + */ + 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. + * + * @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 site_url( $path = '', $scheme = null ) { + return get_site_url( null, $path, $scheme ); +} + +/** + * Retrieve the site url for a given site. + * + * Returns the 'site_url' option with the appropriate protocol, 'https' if + * {@see is_ssl()} and 'http' otherwise. If `$scheme` is 'http' or 'https', + * `is_ssl()` is overridden. + * + * @since 3.0.0 + * + * @param int $blog_id Optional. Blog ID. Default null (current site). + * @param string $path Optional. Path relative to the site url. Default empty. + * @param string $scheme Optional. Scheme to give the site url context. Accepts + * 'http', 'https', 'login', 'login_post', 'admin', or + * 'relative'. Default null. + * @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, '/' ); + + /** + * Filter the site URL. + * + * @since 2.7.0 + * + * @param string $url The complete site URL including scheme and path. + * @param string $path Path relative to the site URL. Blank string if no path is specified. + * @param string|null $scheme Scheme to give the site URL context. Accepts 'http', 'https', 'login', + * 'login_post', 'admin', 'relative' or null. + * @param int|null $blog_id Blog ID, or null for the current blog. + */ + return apply_filters( 'site_url', $url, $path, $scheme, $blog_id ); +} + +/** + * Retrieve the url to the admin area for the current site. + * + * @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 ); +} + +/** + * Retrieves the url to the admin area for a given site. + * + * @since 3.0.0 + * + * @param int $blog_id Optional. Blog ID. Default null (current site). + * @param string $path Optional. Path relative to the admin url. Default empty. + * @param string $scheme Optional. The scheme to use. Accepts 'http' or 'https', + * to force those schemes. Default 'admin', which obeys + * {@see force_ssl_admin()} and {@see is_ssl()}. + * @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, '/' ); + + /** + * Filter the admin area URL. + * + * @since 2.8.0 + * + * @param string $url The complete admin area URL including scheme and path. + * @param string $path Path relative to the admin area URL. Blank string if no path is specified. + * @param int|null $blog_id Blog ID, or null for the current blog. + */ + return apply_filters( 'admin_url', $url, $path, $blog_id ); +} + +/** + * Retrieve the url to the includes directory. + * + * @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, '/'); + + /** + * Filter the URL to the includes directory. + * + * @since 2.8.0 + * + * @param string $url The complete URL to the includes directory including scheme and path. + * @param string $path Path relative to the URL to the wp-includes directory. Blank string + * if no path is specified. + */ + return apply_filters( 'includes_url', $url, $path ); +} + +/** + * Retrieve the url to the content directory. + * + * @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, '/'); + + /** + * Filter the URL to the content directory. + * + * @since 2.8.0 + * + * @param string $url The complete URL to the content directory including scheme and path. + * @param string $path Path relative to the URL to the content directory. Blank string + * if no path is specified. + */ + return apply_filters( 'content_url', $url, $path); +} + +/** + * Retrieve a URL within the plugins or mu-plugins directory. + * + * Defaults to the plugins directory URL if no arguments are supplied. + * + * @since 2.6.0 + * + * @param string $path Optional. Extra path appended to the end of the URL, including + * the relative directory if $plugin is supplied. Default empty. + * @param string $plugin Optional. A full path to a file inside a plugin or mu-plugin. + * The URL will be relative to its directory. Default empty. + * Typically this is done by passing `__FILE__` as the argument. + * @return string Plugins URL link with optional paths appended. +*/ +function plugins_url( $path = '', $plugin = '' ) { + + $path = wp_normalize_path( $path ); + $plugin = wp_normalize_path( $plugin ); + $mu_plugin_dir = wp_normalize_path( WPMU_PLUGIN_DIR ); + + if ( !empty($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, '/'); + + /** + * Filter the URL to the plugins directory. + * + * @since 2.8.0 + * + * @param string $url The complete URL to the plugins directory including scheme and path. + * @param string $path Path relative to the URL to the plugins directory. Blank string + * if no path is specified. + * @param string $plugin The plugin file path to be relative to. Blank string if no plugin + * is specified. + */ + 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. + * + * @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 = '', $scheme = null ) { + if ( ! is_multisite() ) + return site_url($path, $scheme); + + $current_site = get_current_site(); + + 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, '/' ); + + /** + * Filter the network site URL. + * + * @since 3.0.0 + * + * @param string $url The complete network site URL including scheme and path. + * @param string $path Path relative to the network site URL. Blank string if + * no path is specified. + * @param string|null $scheme Scheme to give the URL context. Accepts 'http', 'https', + * 'relative' or null. + */ + return apply_filters( 'network_site_url', $url, $path, $scheme ); +} + +/** + * Retrieves the home url for the current network. + * + * Returns the home url with the appropriate protocol, 'https' {@see is_ssl()} + * and 'http' otherwise. If `$scheme` is 'http' or 'https', `is_ssl()` is + * overridden. + * + * @since 3.0.0 + * + * @param string $path Optional. Path relative to the home url. Default empty. + * @param string $scheme Optional. Scheme to give the home url context. Accepts + * 'http', 'https', or 'relative'. Default null. + * @return string Home url link with optional path appended. +*/ +function network_home_url( $path = '', $scheme = null ) { + if ( ! is_multisite() ) + return home_url($path, $scheme); + + $current_site = get_current_site(); + $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, '/' ); + + /** + * Filter the network home URL. + * + * @since 3.0.0 + * + * @param string $url The complete network home URL including scheme and path. + * @param string $path Path relative to the network home URL. Blank string + * if no path is specified. + * @param string|null $orig_scheme Scheme to give the URL context. Accepts 'http', 'https', + * 'relative' or null. + */ + return apply_filters( 'network_home_url', $url, $path, $orig_scheme); +} + +/** + * Retrieve the url to the admin area for the network. + * + * @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, '/'); + + /** + * Filter the network admin URL. + * + * @since 3.0.0 + * + * @param string $url The complete network admin URL including scheme and path. + * @param string $path Path relative to the network admin URL. Blank string if + * no path is specified. + */ + return apply_filters( 'network_admin_url', $url, $path ); +} + +/** + * Retrieve the url to the admin area for the current user. + * + * @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, '/'); + + /** + * Filter the user admin URL for the current user. + * + * @since 3.1.0 + * + * @param string $url The complete URL including scheme and path. + * @param string $path Path relative to the URL. Blank string if + * no path is specified. + */ + 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. + * + * @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 ( ! $scheme ) { + $scheme = is_ssl() ? 'https' : 'http'; + } elseif ( $scheme === 'admin' || $scheme === 'login' || $scheme === 'login_post' || $scheme === 'rpc' ) { + $scheme = is_ssl() || force_ssl_admin() ? 'https' : 'http'; + } elseif ( $scheme !== 'http' && $scheme !== 'https' && $scheme !== 'relative' ) { + $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 ); + } + + /** + * Filter the resulting URL after setting the scheme. + * + * @since 3.4.0 + * + * @param string $url The complete URL including scheme and path. + * @param string $scheme Scheme applied to the URL. One of 'http', 'https', or 'relative'. + * @param string $orig_scheme Scheme requested for the URL. One of 'http', 'https', 'login', + * 'login_post', 'admin', 'rpc', or 'relative'. + */ + 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 Optional. User ID. Defaults to current user. + * @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 = 0, $path = '', $scheme = 'admin' ) { + $user_id = $user_id ? (int) $user_id : get_current_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 ); + } + } + + /** + * Filter the dashboard URL for a user. + * + * @since 3.1.0 + * + * @param string $url The complete URL including scheme and path. + * @param int $user_id The user ID. + * @param string $path Path relative to the URL. Blank string if no path is specified. + * @param string $scheme Scheme to give the URL context. Accepts 'http', 'https', 'login', + * 'login_post', 'admin', 'relative' or null. + */ + 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_id Optional. User ID. Defaults to current user. + * @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_id = 0, $scheme = 'admin' ) { + $user_id = $user_id ? (int) $user_id : get_current_user_id(); + + 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_id, 'profile.php', $scheme ); + + /** + * Filter the URL for a user's profile editor. + * + * @since 3.1.0 + * + * @param string $url The complete URL including scheme and path. + * @param int $user_id The user ID. + * @param string $scheme Scheme to give the URL context. Accepts 'http', 'https', 'login', + * 'login_post', 'admin', 'relative' or null. + */ + return apply_filters( 'edit_profile_url', $url, $user_id, $scheme); +} + +/** + * Output rel=canonical for singular queries. + * + * @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 "\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) { + /** + * Filter whether to preempt generating a shortlink for the given post. + * + * Passing a truthy value to the filter will effectively short-circuit the + * shortlink-generation process, returning that value instead. + * + * @since 3.0.0 + * + * @param bool|string $return Short-circuit return value. Either false or a URL string. + * @param int $id Post ID, or 0 for the current post. + * @param string $context The context for the link. One of 'post' or 'query', + * @param bool $allow_slugs Whether to allow post slugs in the shortlink. + */ + $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 ( 'page' === $post->post_type && $post->ID == get_option( 'page_on_front' ) && 'page' == get_option( 'show_on_front' ) ) { + $shortlink = home_url( '/' ); + } elseif ( $post_type->public ) { + $shortlink = home_url( '?p=' . $post_id ); + } + } + + /** + * Filter the shortlink for a post. + * + * @since 3.0.0 + * + * @param string $shortlink Shortlink URL. + * @param int $id Post ID, or 0 for the current post. + * @param string $context The context for the link. One of 'post' or 'query', + * @param bool $allow_slugs Whether to allow post slugs in the shortlink. Not used by default. + */ + 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 + */ +function wp_shortlink_wp_head() { + $shortlink = wp_get_shortlink( 0, 'query' ); + + if ( empty( $shortlink ) ) + return; + + echo "\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 + */ +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 = '' . $text . ''; + + /** + * Filter the shortlink anchor tag for a post. + * + * @since 3.0.0 + * + * @param string $link Shortlink anchor tag. + * @param string $shortlink Shortlink URL. + * @param string $text Shortlink's text. + * @param string $title Shortlink's title attribute. + */ + $link = apply_filters( 'the_shortlink', $link, $shortlink, $text, $title ); + echo $before, $link, $after; + } +}