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WordPress/wp-includes/link-template.php

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<?php
/**
* WordPress Link Template Functions
*
* @package WordPress
* @subpackage Template
*/
/**
* Display the permalink for the current post.
*
* @since 1.2.0
* @uses apply_filters() Calls 'the_permalink' filter on the permalink string.
*/
function the_permalink() {
echo esc_url( apply_filters( 'the_permalink', get_permalink() ) );
}
/**
* Retrieve trailing slash string, if blog set for adding trailing slashes.
*
* Conditionally adds a trailing slash if the permalink structure has a trailing
* slash, strips the trailing slash if not. The string is passed through the
* 'user_trailingslashit' filter. Will remove trailing slash from string, if
* blog is not set to have them.
*
* @since 2.2.0
* @uses $wp_rewrite
*
* @param string $string URL with or without a trailing slash.
* @param string $type_of_url The type of URL being considered (e.g. single, category, etc) for use in the filter.
* @return string
*/
function user_trailingslashit($string, $type_of_url = '') {
global $wp_rewrite;
if ( $wp_rewrite->use_trailing_slashes )
$string = trailingslashit($string);
else
$string = untrailingslashit($string);
// Note that $type_of_url can be one of following:
// single, single_trackback, single_feed, single_paged, feed, category, page, year, month, day, paged, post_type_archive
$string = apply_filters('user_trailingslashit', $string, $type_of_url);
return $string;
}
/**
* Display permalink anchor for current post.
*
* The permalink mode title will use the post title for the 'a' element 'id'
* attribute. The id mode uses 'post-' with the post ID for the 'id' attribute.
*
* @since 0.71
*
* @param string $mode Permalink mode can be either 'title', 'id', or default, which is 'id'.
*/
function permalink_anchor( $mode = 'id' ) {
$post = get_post();
switch ( strtolower( $mode ) ) {
case 'title':
$title = sanitize_title( $post->post_title ) . '-' . $post->ID;
echo '<a id="'.$title.'"></a>';
break;
case 'id':
default:
echo '<a id="post-' . $post->ID . '"></a>';
break;
}
}
/**
* Retrieve full permalink for current post or post ID.
*
* @since 1.0.0
*
* @param int $id Optional. Post ID.
* @param bool $leavename Optional, defaults to false. Whether to keep post name or page name.
* @return string
*/
function get_permalink( $id = 0, $leavename = false ) {
$rewritecode = array(
'%year%',
'%monthnum%',
'%day%',
'%hour%',
'%minute%',
'%second%',
$leavename? '' : '%postname%',
'%post_id%',
'%category%',
'%author%',
$leavename? '' : '%pagename%',
);
if ( is_object($id) && isset($id->filter) && 'sample' == $id->filter ) {
$post = $id;
$sample = true;
} else {
$post = get_post($id);
$sample = false;
}
if ( empty($post->ID) )
return false;
if ( $post->post_type == 'page' )
return get_page_link($post->ID, $leavename, $sample);
elseif ( $post->post_type == 'attachment' )
return get_attachment_link( $post->ID, $leavename );
elseif ( in_array($post->post_type, get_post_types( array('_builtin' => false) ) ) )
return get_post_permalink($post->ID, $leavename, $sample);
$permalink = get_option('permalink_structure');
$permalink = apply_filters('pre_post_link', $permalink, $post, $leavename);
if ( '' != $permalink && !in_array($post->post_status, array('draft', 'pending', 'auto-draft')) ) {
$unixtime = strtotime($post->post_date);
$category = '';
if ( strpos($permalink, '%category%') !== false ) {
$cats = get_the_category($post->ID);
if ( $cats ) {
usort($cats, '_usort_terms_by_ID'); // order by ID
$category_object = apply_filters( 'post_link_category', $cats[0], $cats, $post );
$category_object = get_term( $category_object, 'category' );
$category = $category_object->slug;
if ( $parent = $category_object->parent )
$category = get_category_parents($parent, false, '/', true) . $category;
}
// show default category in permalinks, without
// having to assign it explicitly
if ( empty($category) ) {
$default_category = get_category( get_option( 'default_category' ) );
$category = is_wp_error( $default_category ) ? '' : $default_category->slug;
}
}
$author = '';
if ( strpos($permalink, '%author%') !== false ) {
$authordata = get_userdata($post->post_author);
$author = $authordata->user_nicename;
}
$date = explode(" ",date('Y m d H i s', $unixtime));
$rewritereplace =
array(
$date[0],
$date[1],
$date[2],
$date[3],
$date[4],
$date[5],
$post->post_name,
$post->ID,
$category,
$author,
$post->post_name,
);
$permalink = home_url( str_replace($rewritecode, $rewritereplace, $permalink) );
$permalink = user_trailingslashit($permalink, 'single');
} else { // if they're not using the fancy permalink option
$permalink = home_url('?p=' . $post->ID);
}
return apply_filters('post_link', $permalink, $post, $leavename);
}
/**
* Retrieve the permalink for a post with a custom post type.
*
* @since 3.0.0
*
* @param int $id Optional. Post ID.
* @param bool $leavename Optional, defaults to false. Whether to keep post name.
* @param bool $sample Optional, defaults to false. Is it a sample permalink.
* @return string
*/
function get_post_permalink( $id = 0, $leavename = false, $sample = false ) {
global $wp_rewrite;
$post = get_post($id);
if ( is_wp_error( $post ) )
return $post;
$post_link = $wp_rewrite->get_extra_permastruct($post->post_type);
$slug = $post->post_name;
$draft_or_pending = isset($post->post_status) && in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft' ) );
$post_type = get_post_type_object($post->post_type);
if ( !empty($post_link) && ( !$draft_or_pending || $sample ) ) {
if ( ! $leavename ) {
if ( $post_type->hierarchical )
$slug = get_page_uri($id);
$post_link = str_replace("%$post->post_type%", $slug, $post_link);
}
$post_link = home_url( user_trailingslashit($post_link) );
} else {
if ( $post_type->query_var && ( isset($post->post_status) && !$draft_or_pending ) )
$post_link = add_query_arg($post_type->query_var, $slug, '');
else
$post_link = add_query_arg(array('post_type' => $post->post_type, 'p' => $post->ID), '');
$post_link = home_url($post_link);
}
return apply_filters('post_type_link', $post_link, $post, $leavename, $sample);
}
/**
* Retrieve permalink from post ID.
*
* @since 1.0.0
*
* @param int $post_id Optional. Post ID.
* @param mixed $deprecated Not used.
* @return string
*/
function post_permalink( $post_id = 0, $deprecated = '' ) {
if ( !empty( $deprecated ) )
_deprecated_argument( __FUNCTION__, '1.3' );
return get_permalink($post_id);
}
/**
* Retrieve the permalink for current page or page ID.
*
* Respects page_on_front. Use this one.
*
* @since 1.5.0
*
* @param mixed $post Optional. Post ID or object.
* @param bool $leavename Optional, defaults to false. Whether to keep page name.
* @param bool $sample Optional, defaults to false. Is it a sample permalink.
* @return string
*/
function get_page_link( $post = false, $leavename = false, $sample = false ) {
$post = get_post( $post );
if ( 'page' == get_option( 'show_on_front' ) && $post->ID == get_option( 'page_on_front' ) )
$link = home_url('/');
else
$link = _get_page_link( $post, $leavename, $sample );
return apply_filters( 'page_link', $link, $post->ID, $sample );
}
/**
* Retrieve the page permalink.
*
* Ignores page_on_front. Internal use only.
*
* @since 2.1.0
* @access private
*
* @param mixed $post Optional. Post ID or object.
* @param bool $leavename Optional. Leave name.
* @param bool $sample Optional. Sample permalink.
* @return string
*/
function _get_page_link( $post = false, $leavename = false, $sample = false ) {
global $wp_rewrite;
$post = get_post( $post );
$draft_or_pending = in_array( $post->post_status, array( 'draft', 'pending', 'auto-draft' ) );
$link = $wp_rewrite->get_page_permastruct();
if ( !empty($link) && ( ( isset($post->post_status) && !$draft_or_pending ) || $sample ) ) {
if ( ! $leavename ) {
$link = str_replace('%pagename%', get_page_uri( $post ), $link);
}
$link = home_url($link);
$link = user_trailingslashit($link, 'page');
} else {
$link = home_url( '?page_id=' . $post->ID );
}
return apply_filters( '_get_page_link', $link, $post->ID );
}
/**
* Retrieve permalink for attachment.
*
* This can be used in the WordPress Loop or outside of it.
*
* @since 2.0.0
*
* @param mixed $post Optional. Post ID or object.
* @param bool $leavename Optional. Leave name.
* @return string
*/
function get_attachment_link( $post = null, $leavename = false ) {
global $wp_rewrite;
$link = false;
$post = get_post( $post );
$parent = ( $post->post_parent > 0 && $post->post_parent != $post->ID ) ? get_post( $post->post_parent ) : false;
if ( $wp_rewrite->using_permalinks() && $parent ) {
if ( 'page' == $parent->post_type )
$parentlink = _get_page_link( $post->post_parent ); // Ignores page_on_front
else
$parentlink = get_permalink( $post->post_parent );
if ( is_numeric($post->post_name) || false !== strpos(get_option('permalink_structure'), '%category%') )
$name = 'attachment/' . $post->post_name; // <permalink>/<int>/ is paged so we use the explicit attachment marker
else
$name = $post->post_name;
if ( strpos($parentlink, '?') === false )
$link = user_trailingslashit( trailingslashit($parentlink) . '%postname%' );
if ( ! $leavename )
$link = str_replace( '%postname%', $name, $link );
}
if ( ! $link )
$link = home_url( '/?attachment_id=' . $post->ID );
return apply_filters( 'attachment_link', $link, $post->ID );
}
/**
* Retrieve the permalink for the year archives.
*
* @since 1.5.0
*
* @param int|bool $year False for current year or year for permalink.
* @return string
*/
function get_year_link($year) {
global $wp_rewrite;
if ( !$year )
$year = gmdate('Y', current_time('timestamp'));
$yearlink = $wp_rewrite->get_year_permastruct();
if ( !empty($yearlink) ) {
$yearlink = str_replace('%year%', $year, $yearlink);
return apply_filters('year_link', home_url( user_trailingslashit($yearlink, 'year') ), $year);
} else {
return apply_filters('year_link', home_url('?m=' . $year), $year);
}
}
/**
* Retrieve the permalink for the month archives with year.
*
* @since 1.0.0
*
* @param bool|int $year False for current year. Integer of year.
* @param bool|int $month False for current month. Integer of month.
* @return string
*/
function get_month_link($year, $month) {
global $wp_rewrite;
if ( !$year )
$year = gmdate('Y', current_time('timestamp'));
if ( !$month )
$month = gmdate('m', current_time('timestamp'));
$monthlink = $wp_rewrite->get_month_permastruct();
if ( !empty($monthlink) ) {
$monthlink = str_replace('%year%', $year, $monthlink);
$monthlink = str_replace('%monthnum%', zeroise(intval($month), 2), $monthlink);
return apply_filters('month_link', home_url( user_trailingslashit($monthlink, 'month') ), $year, $month);
} else {
return apply_filters('month_link', home_url( '?m=' . $year . zeroise($month, 2) ), $year, $month);
}
}
/**
* Retrieve the permalink for the day archives with year and month.
*
* @since 1.0.0
*
* @param bool|int $year False for current year. Integer of year.
* @param bool|int $month False for current month. Integer of month.
* @param bool|int $day False for current day. Integer of day.
* @return string
*/
function get_day_link($year, $month, $day) {
global $wp_rewrite;
if ( !$year )
$year = gmdate('Y', current_time('timestamp'));
if ( !$month )
$month = gmdate('m', current_time('timestamp'));
if ( !$day )
$day = gmdate('j', current_time('timestamp'));
$daylink = $wp_rewrite->get_day_permastruct();
if ( !empty($daylink) ) {
$daylink = str_replace('%year%', $year, $daylink);
$daylink = str_replace('%monthnum%', zeroise(intval($month), 2), $daylink);
$daylink = str_replace('%day%', zeroise(intval($day), 2), $daylink);
return apply_filters('day_link', home_url( user_trailingslashit($daylink, 'day') ), $year, $month, $day);
} else {
return apply_filters('day_link', home_url( '?m=' . $year . zeroise($month, 2) . zeroise($day, 2) ), $year, $month, $day);
}
}
/**
* Display the permalink for the feed type.
*
* @since 3.0.0
*
* @param string $anchor The link's anchor text.
* @param string $feed Optional, defaults to default feed. Feed type.
*/
function the_feed_link( $anchor, $feed = '' ) {
$link = '<a href="' . esc_url( get_feed_link( $feed ) ) . '">' . $anchor . '</a>';
echo apply_filters( 'the_feed_link', $link, $feed );
}
/**
* Retrieve the permalink for the feed type.
*
* @since 1.5.0
*
* @param string $feed Optional, defaults to default feed. Feed type.
* @return string
*/
function get_feed_link($feed = '') {
global $wp_rewrite;
$permalink = $wp_rewrite->get_feed_permastruct();
if ( '' != $permalink ) {
if ( false !== strpos($feed, 'comments_') ) {
$feed = str_replace('comments_', '', $feed);
$permalink = $wp_rewrite->get_comment_feed_permastruct();
}
if ( get_default_feed() == $feed )
$feed = '';
$permalink = str_replace('%feed%', $feed, $permalink);
$permalink = preg_replace('#/+#', '/', "/$permalink");
$output = home_url( user_trailingslashit($permalink, 'feed') );
} else {
if ( empty($feed) )
$feed = get_default_feed();
if ( false !== strpos($feed, 'comments_') )
$feed = str_replace('comments_', 'comments-', $feed);
$output = home_url("?feed={$feed}");
}
return apply_filters('feed_link', $output, $feed);
}
/**
* Retrieve the permalink for the post comments feed.
*
* @since 2.2.0
*
* @param int $post_id Optional. Post ID.
* @param string $feed Optional. Feed type.
* @return string
*/
function get_post_comments_feed_link($post_id = 0, $feed = '') {
$post_id = absint( $post_id );
if ( ! $post_id )
$post_id = get_the_ID();
if ( empty( $feed ) )
$feed = get_default_feed();
if ( '' != get_option('permalink_structure') ) {
if ( 'page' == get_option('show_on_front') && $post_id == get_option('page_on_front') )
$url = _get_page_link( $post_id );
else
$url = get_permalink($post_id);
$url = trailingslashit($url) . 'feed';
if ( $feed != get_default_feed() )
$url .= "/$feed";
$url = user_trailingslashit($url, 'single_feed');
} else {
$type = get_post_field('post_type', $post_id);
if ( 'page' == $type )
$url = add_query_arg( array( 'feed' => $feed, 'page_id' => $post_id ), home_url( '/' ) );
else
$url = add_query_arg( array( 'feed' => $feed, 'p' => $post_id ), home_url( '/' ) );
}
return apply_filters('post_comments_feed_link', $url);
}
/**
* Display the comment feed link for a post.
*
* Prints out the comment feed link for a post. Link text is placed in the
* anchor. If no link text is specified, default text is used. If no post ID is
* specified, the current post is used.
*
* @package WordPress
* @subpackage Feed
* @since 2.5.0
*
* @param string $link_text Descriptive text.
* @param int $post_id Optional post ID. Default to current post.
* @param string $feed Optional. Feed format.
* @return string Link to the comment feed for the current post.
*/
function post_comments_feed_link( $link_text = '', $post_id = '', $feed = '' ) {
$url = esc_url( get_post_comments_feed_link( $post_id, $feed ) );
if ( empty($link_text) )
$link_text = __('Comments Feed');
echo apply_filters( 'post_comments_feed_link_html', "<a href='$url'>$link_text</a>", $post_id, $feed );
}
/**
* Retrieve the feed link for a given author.
*
* Returns a link to the feed for all posts by a given author. A specific feed
* can be requested or left blank to get the default feed.
*
* @package WordPress
* @subpackage Feed
* @since 2.5.0
*
* @param int $author_id ID of an author.
* @param string $feed Optional. Feed type.
* @return string Link to the feed for the author specified by $author_id.
*/
function get_author_feed_link( $author_id, $feed = '' ) {
$author_id = (int) $author_id;
$permalink_structure = get_option('permalink_structure');
if ( empty($feed) )
$feed = get_default_feed();
if ( '' == $permalink_structure ) {
$link = home_url("?feed=$feed&amp;author=" . $author_id);
} else {
$link = get_author_posts_url($author_id);
if ( $feed == get_default_feed() )
$feed_link = 'feed';
else
$feed_link = "feed/$feed";
$link = trailingslashit($link) . user_trailingslashit($feed_link, 'feed');
}
$link = apply_filters('author_feed_link', $link, $feed);
return $link;
}
/**
* Retrieve the feed link for a category.
*
* Returns a link to the feed for all posts in a given category. A specific feed
* can be requested or left blank to get the default feed.
*
* @package WordPress
* @subpackage Feed
* @since 2.5.0
*
* @param int $cat_id ID of a category.
* @param string $feed Optional. Feed type.
* @return string Link to the feed for the category specified by $cat_id.
*/
function get_category_feed_link($cat_id, $feed = '') {
return get_term_feed_link($cat_id, 'category', $feed);
}
/**
* Retrieve the feed link for a term.
*
* Returns a link to the feed for all posts in a given term. A specific feed
* can be requested or left blank to get the default feed.
*
* @since 3.0
*
* @param int $term_id ID of a category.
* @param string $taxonomy Optional. Taxonomy of $term_id
* @param string $feed Optional. Feed type.
* @return string Link to the feed for the term specified by $term_id and $taxonomy.
*/
function get_term_feed_link( $term_id, $taxonomy = 'category', $feed = '' ) {
$term_id = ( int ) $term_id;
$term = get_term( $term_id, $taxonomy );
if ( empty( $term ) || is_wp_error( $term ) )
return false;
if ( empty( $feed ) )
$feed = get_default_feed();
$permalink_structure = get_option( 'permalink_structure' );
if ( '' == $permalink_structure ) {
if ( 'category' == $taxonomy ) {
$link = home_url("?feed=$feed&amp;cat=$term_id");
}
elseif ( 'post_tag' == $taxonomy ) {
$link = home_url("?feed=$feed&amp;tag=$term->slug");
} else {
$t = get_taxonomy( $taxonomy );
$link = home_url("?feed=$feed&amp;$t->query_var=$term->slug");
}
} else {
$link = get_term_link( $term_id, $term->taxonomy );
if ( $feed == get_default_feed() )
$feed_link = 'feed';
else
$feed_link = "feed/$feed";
$link = trailingslashit( $link ) . user_trailingslashit( $feed_link, 'feed' );
}
if ( 'category' == $taxonomy )
$link = apply_filters( 'category_feed_link', $link, $feed );
elseif ( 'post_tag' == $taxonomy )
$link = apply_filters( 'tag_feed_link', $link, $feed );
else
$link = apply_filters( 'taxonomy_feed_link', $link, $feed, $taxonomy );
return $link;
}
/**
* Retrieve permalink for feed of tag.
*
* @since 2.3.0
*
* @param int $tag_id Tag ID.
* @param string $feed Optional. Feed type.
* @return string
*/
function get_tag_feed_link($tag_id, $feed = '') {
return get_term_feed_link($tag_id, 'post_tag', $feed);
}
/**
* Retrieve edit tag link.
*
* @since 2.7.0
*
* @param int $tag_id Tag ID
* @param string $taxonomy Taxonomy
* @return string
*/
function get_edit_tag_link( $tag_id, $taxonomy = 'post_tag' ) {
return apply_filters( 'get_edit_tag_link', get_edit_term_link( $tag_id, $taxonomy ) );
}
/**
* Display or retrieve edit tag link with formatting.
*
* @since 2.7.0
*
* @param string $link Optional. Anchor text.
* @param string $before Optional. Display before edit link.
* @param string $after Optional. Display after edit link.
* @param int|object $tag Tag object or ID
* @return string HTML content.
*/
function edit_tag_link( $link = '', $before = '', $after = '', $tag = null ) {
$link = edit_term_link( $link, '', '', false, $tag );
echo $before . apply_filters( 'edit_tag_link', $link ) . $after;
}
/**
* Retrieve edit term url.
*
* @since 3.1.0
*
* @param int $term_id Term ID
* @param string $taxonomy Taxonomy
* @param string $object_type The object type
* @return string
*/
function get_edit_term_link( $term_id, $taxonomy, $object_type = '' ) {
$tax = get_taxonomy( $taxonomy );
if ( !current_user_can( $tax->cap->edit_terms ) )
return;
$term = get_term( $term_id, $taxonomy );
$args = array(
'action' => 'edit',
'taxonomy' => $taxonomy,
'tag_ID' => $term->term_id,
);
if ( $object_type )
$args['post_type'] = $object_type;
$location = add_query_arg( $args, admin_url( 'edit-tags.php' ) );
return apply_filters( 'get_edit_term_link', $location, $term_id, $taxonomy, $object_type );
}
/**
* Display or retrieve edit term link with formatting.
*
* @since 3.1.0
*
* @param string $link Optional. Anchor text.
* @param string $before Optional. Display before edit link.
* @param string $after Optional. Display after edit link.
* @param object $term Term object
* @return string HTML content.
*/
function edit_term_link( $link = '', $before = '', $after = '', $term = null, $echo = true ) {
if ( is_null( $term ) ) {
$term = get_queried_object();
}
$tax = get_taxonomy( $term->taxonomy );
if ( !current_user_can($tax->cap->edit_terms) )
return;
if ( empty( $link ) )
$link = __('Edit This');
$link = '<a href="' . get_edit_term_link( $term->term_id, $term->taxonomy ) . '" title="' . $link . '">' . $link . '</a>';
$link = $before . apply_filters( 'edit_term_link', $link, $term->term_id ) . $after;
if ( $echo )
echo $link;
else
return $link;
}
/**
* Retrieve permalink for search.
*
* @since 3.0.0
* @param string $query Optional. The query string to use. If empty the current query is used.
* @return string
*/
function get_search_link( $query = '' ) {
global $wp_rewrite;
if ( empty($query) )
$search = get_search_query( false );
else
$search = stripslashes($query);
$permastruct = $wp_rewrite->get_search_permastruct();
if ( empty( $permastruct ) ) {
$link = home_url('?s=' . urlencode($search) );
} else {
$search = urlencode($search);
$search = str_replace('%2F', '/', $search); // %2F(/) is not valid within a URL, send it unencoded.
$link = str_replace( '%search%', $search, $permastruct );
$link = home_url( user_trailingslashit( $link, 'search' ) );
}
return apply_filters( 'search_link', $link, $search );
}
/**
* Retrieve the permalink for the feed of the search results.
*
* @since 2.5.0
*
* @param string $search_query Optional. Search query.
* @param string $feed Optional. Feed type.
* @return string
*/
function get_search_feed_link($search_query = '', $feed = '') {
global $wp_rewrite;
$link = get_search_link($search_query);
if ( empty($feed) )
$feed = get_default_feed();
$permastruct = $wp_rewrite->get_search_permastruct();
if ( empty($permastruct) ) {
$link = add_query_arg('feed', $feed, $link);
} else {
$link = trailingslashit($link);
$link .= "feed/$feed/";
}
$link = apply_filters('search_feed_link', $link, $feed, 'posts');
return $link;
}
/**
* Retrieve the permalink for the comments feed of the search results.
*
* @since 2.5.0
*
* @param string $search_query Optional. Search query.
* @param string $feed Optional. Feed type.
* @return string
*/
function get_search_comments_feed_link($search_query = '', $feed = '') {
global $wp_rewrite;
if ( empty($feed) )
$feed = get_default_feed();
$link = get_search_feed_link($search_query, $feed);
$permastruct = $wp_rewrite->get_search_permastruct();
if ( empty($permastruct) )
$link = add_query_arg('feed', 'comments-' . $feed, $link);
else
$link = add_query_arg('withcomments', 1, $link);
$link = apply_filters('search_feed_link', $link, $feed, 'comments');
return $link;
}
/**
* Retrieve the permalink for a post type archive.
*
* @since 3.1.0
*
* @param string $post_type Post type
* @return string
*/
function get_post_type_archive_link( $post_type ) {
global $wp_rewrite;
if ( ! $post_type_obj = get_post_type_object( $post_type ) )
return false;
if ( ! $post_type_obj->has_archive )
return false;
if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) ) {
$struct = ( true === $post_type_obj->has_archive ) ? $post_type_obj->rewrite['slug'] : $post_type_obj->has_archive;
if ( $post_type_obj->rewrite['with_front'] )
$struct = $wp_rewrite->front . $struct;
else
$struct = $wp_rewrite->root . $struct;
$link = home_url( user_trailingslashit( $struct, 'post_type_archive' ) );
} else {
$link = home_url( '?post_type=' . $post_type );
}
return apply_filters( 'post_type_archive_link', $link, $post_type );
}
/**
* Retrieve the permalink for a post type archive feed.
*
* @since 3.1.0
*
* @param string $post_type Post type
* @param string $feed Optional. Feed type
* @return string
*/
function get_post_type_archive_feed_link( $post_type, $feed = '' ) {
$default_feed = get_default_feed();
if ( empty( $feed ) )
$feed = $default_feed;
if ( ! $link = get_post_type_archive_link( $post_type ) )
return false;
$post_type_obj = get_post_type_object( $post_type );
if ( get_option( 'permalink_structure' ) && is_array( $post_type_obj->rewrite ) && $post_type_obj->rewrite['feeds'] ) {
$link = trailingslashit( $link );
$link .= 'feed/';
if ( $feed != $default_feed )
$link .= "$feed/";
} else {
$link = add_query_arg( 'feed', $feed, $link );
}
return apply_filters( 'post_type_archive_feed_link', $link, $feed );
}
/**
* Retrieve edit posts link for post.
*
* Can be used within the WordPress loop or outside of it. Can be used with
* pages, posts, attachments, and revisions.
*
* @since 2.3.0
*
* @param int $id Optional. Post ID.
* @param string $context Optional, defaults to display. How to write the '&', defaults to '&amp;'.
* @return string
*/
function get_edit_post_link( $id = 0, $context = 'display' ) {
if ( ! $post = get_post( $id ) )
return;
if ( 'display' == $context )
$action = '&amp;action=edit';
else
$action = '&action=edit';
$post_type_object = get_post_type_object( $post->post_type );
if ( !$post_type_object )
return;
if ( !current_user_can( $post_type_object->cap->edit_post, $post->ID ) )
return;
return apply_filters( 'get_edit_post_link', admin_url( sprintf($post_type_object->_edit_link . $action, $post->ID) ), $post->ID, $context );
}
/**
* Display edit post link for post.
*
* @since 1.0.0
*
* @param string $link Optional. Anchor text.
* @param string $before Optional. Display before edit link.
* @param string $after Optional. Display after edit link.
* @param int $id Optional. Post ID.
*/
function edit_post_link( $link = null, $before = '', $after = '', $id = 0 ) {
if ( !$post = get_post( $id ) )
return;
if ( !$url = get_edit_post_link( $post->ID ) )
return;
if ( null === $link )
$link = __('Edit This');
$post_type_obj = get_post_type_object( $post->post_type );
$link = '<a class="post-edit-link" href="' . $url . '" title="' . esc_attr( $post_type_obj->labels->edit_item ) . '">' . $link . '</a>';
echo $before . apply_filters( 'edit_post_link', $link, $post->ID ) . $after;
}
/**
* Retrieve delete posts link for post.
*
* Can be used within the WordPress loop or outside of it, with any post type.
*
* @since 2.9.0
*
* @param int $id Optional. Post ID.
* @param string $deprecated Not used.
* @param bool $force_delete Whether to bypass trash and force deletion. Default is false.
* @return string
*/
function get_delete_post_link( $id = 0, $deprecated = '', $force_delete = false ) {
if ( ! empty( $deprecated ) )
_deprecated_argument( __FUNCTION__, '3.0' );
if ( !$post = get_post( $id ) )
return;
$post_type_object = get_post_type_object( $post->post_type );
if ( !$post_type_object )
return;
if ( !current_user_can( $post_type_object->cap->delete_post, $post->ID ) )
return;
$action = ( $force_delete || !EMPTY_TRASH_DAYS ) ? 'delete' : 'trash';
$delete_link = add_query_arg( 'action', $action, admin_url( sprintf( $post_type_object->_edit_link, $post->ID ) ) );
return apply_filters( 'get_delete_post_link', wp_nonce_url( $delete_link, "$action-post_{$post->ID}" ), $post->ID, $force_delete );
}
/**
* Retrieve edit comment link.
*
* @since 2.3.0
*
* @param int $comment_id Optional. Comment ID.
* @return string
*/
function get_edit_comment_link( $comment_id = 0 ) {
$comment = get_comment( $comment_id );
if ( !current_user_can( 'edit_comment', $comment->comment_ID ) )
return;
$location = admin_url('comment.php?action=editcomment&amp;c=') . $comment->comment_ID;
return apply_filters( 'get_edit_comment_link', $location );
}
/**
* Display or retrieve edit comment link with formatting.
*
* @since 1.0.0
*
* @param string $link Optional. Anchor text.
* @param string $before Optional. Display before edit link.
* @param string $after Optional. Display after edit link.
* @return string|null HTML content, if $echo is set to false.
*/
function edit_comment_link( $link = null, $before = '', $after = '' ) {
global $comment;
if ( !current_user_can( 'edit_comment', $comment->comment_ID ) )
return;
if ( null === $link )
$link = __('Edit This');
$link = '<a class="comment-edit-link" href="' . get_edit_comment_link( $comment->comment_ID ) . '" title="' . esc_attr__( 'Edit comment' ) . '">' . $link . '</a>';
echo $before . apply_filters( 'edit_comment_link', $link, $comment->comment_ID ) . $after;
}
/**
* Display edit bookmark (literally a URL external to blog) link.
*
* @since 2.7.0
*
* @param int $link Optional. Bookmark ID.
* @return string
*/
function get_edit_bookmark_link( $link = 0 ) {
$link = get_bookmark( $link );
if ( !current_user_can('manage_links') )
return;
$location = admin_url('link.php?action=edit&amp;link_id=') . $link->link_id;
return apply_filters( 'get_edit_bookmark_link', $location, $link->link_id );
}
/**
* Display edit bookmark (literally a URL external to blog) link anchor content.
*
* @since 2.7.0
*
* @param string $link Optional. Anchor text.
* @param string $before Optional. Display before edit link.
* @param string $after Optional. Display after edit link.
* @param int $bookmark Optional. Bookmark ID.
*/
function edit_bookmark_link( $link = '', $before = '', $after = '', $bookmark = null ) {
$bookmark = get_bookmark($bookmark);
if ( !current_user_can('manage_links') )
return;
if ( empty($link) )
$link = __('Edit This');
$link = '<a href="' . get_edit_bookmark_link( $bookmark ) . '" title="' . esc_attr__( 'Edit Link' ) . '">' . $link . '</a>';
echo $before . apply_filters( 'edit_bookmark_link', $link, $bookmark->link_id ) . $after;
}
/**
* Retrieve edit user link
*
* @since 3.5.0
*
* @param int $user_id Optional. User ID. Defaults to the current user.
* @return string URL to edit user page or empty string.
*/
function get_edit_user_link( $user_id = null ) {
if ( ! $user_id )
$user_id = get_current_user_id();
if ( empty( $user_id ) || ! current_user_can( 'edit_user', $user_id ) )
return '';
$user = get_userdata( $user_id );
if ( ! $user )
return '';
if ( get_current_user_id() == $user->ID )
$link = get_edit_profile_url( $user->ID );
else
$link = add_query_arg( 'user_id', $user->ID, self_admin_url( 'user-edit.php' ) );
return apply_filters( 'get_edit_user_link', $link, $user->ID );
}
// Navigation links
/**
* Retrieve previous post that is adjacent to current post.
*
* @since 1.5.0
*
* @param bool $in_same_cat Optional. Whether post should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
* @return mixed Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists.
*/
function get_previous_post($in_same_cat = false, $excluded_categories = '') {
return get_adjacent_post($in_same_cat, $excluded_categories);
}
/**
* Retrieve next post that is adjacent to current post.
*
* @since 1.5.0
*
* @param bool $in_same_cat Optional. Whether post should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
* @return mixed Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists.
*/
function get_next_post($in_same_cat = false, $excluded_categories = '') {
return get_adjacent_post($in_same_cat, $excluded_categories, false);
}
/**
* Retrieve adjacent post.
*
* Can either be next or previous post.
*
* @since 2.5.0
*
* @param bool $in_same_cat Optional. Whether post should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
* @param bool $previous Optional. Whether to retrieve previous post.
* @return mixed Post object if successful. Null if global $post is not set. Empty string if no corresponding post exists.
*/
function get_adjacent_post( $in_same_cat = false, $excluded_categories = '', $previous = true ) {
global $wpdb;
if ( ! $post = get_post() )
return null;
$current_post_date = $post->post_date;
$join = '';
$posts_in_ex_cats_sql = '';
if ( $in_same_cat || ! empty( $excluded_categories ) ) {
$join = " INNER JOIN $wpdb->term_relationships AS tr ON p.ID = tr.object_id INNER JOIN $wpdb->term_taxonomy tt ON tr.term_taxonomy_id = tt.term_taxonomy_id";
if ( $in_same_cat ) {
if ( ! is_object_in_taxonomy( $post->post_type, 'category' ) )
return '';
$cat_array = wp_get_object_terms($post->ID, 'category', array('fields' => 'ids'));
if ( ! $cat_array || is_wp_error( $cat_array ) )
return '';
$join .= " AND tt.taxonomy = 'category' AND tt.term_id IN (" . implode(',', $cat_array) . ")";
}
$posts_in_ex_cats_sql = "AND tt.taxonomy = 'category'";
if ( ! empty( $excluded_categories ) ) {
if ( ! is_array( $excluded_categories ) ) {
// back-compat, $excluded_categories used to be IDs separated by " and "
if ( strpos( $excluded_categories, ' and ' ) !== false ) {
_deprecated_argument( __FUNCTION__, '3.3', sprintf( __( 'Use commas instead of %s to separate excluded categories.' ), "'and'" ) );
$excluded_categories = explode( ' and ', $excluded_categories );
} else {
$excluded_categories = explode( ',', $excluded_categories );
}
}
$excluded_categories = array_map( 'intval', $excluded_categories );
if ( ! empty( $cat_array ) ) {
$excluded_categories = array_diff($excluded_categories, $cat_array);
$posts_in_ex_cats_sql = '';
}
if ( !empty($excluded_categories) ) {
$posts_in_ex_cats_sql = " AND tt.taxonomy = 'category' AND tt.term_id NOT IN (" . implode($excluded_categories, ',') . ')';
}
}
}
$adjacent = $previous ? 'previous' : 'next';
$op = $previous ? '<' : '>';
$order = $previous ? 'DESC' : 'ASC';
$join = apply_filters( "get_{$adjacent}_post_join", $join, $in_same_cat, $excluded_categories );
$where = apply_filters( "get_{$adjacent}_post_where", $wpdb->prepare("WHERE p.post_date $op %s AND p.post_type = %s AND p.post_status = 'publish' $posts_in_ex_cats_sql", $current_post_date, $post->post_type), $in_same_cat, $excluded_categories );
$sort = apply_filters( "get_{$adjacent}_post_sort", "ORDER BY p.post_date $order LIMIT 1" );
$query = "SELECT p.id FROM $wpdb->posts AS p $join $where $sort";
$query_key = 'adjacent_post_' . md5($query);
$result = wp_cache_get($query_key, 'counts');
if ( false !== $result ) {
if ( $result )
$result = get_post( $result );
return $result;
}
$result = $wpdb->get_var( $query );
if ( null === $result )
$result = '';
wp_cache_set($query_key, $result, 'counts');
if ( $result )
$result = get_post( $result );
return $result;
}
/**
* Get adjacent post relational link.
*
* Can either be next or previous post relational link.
*
* @since 2.8.0
*
* @param string $title Optional. Link title format.
* @param bool $in_same_cat Optional. Whether link should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
* @param bool $previous Optional, default is true. Whether to display link to previous or next post.
* @return string
*/
function get_adjacent_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '', $previous = true) {
if ( $previous && is_attachment() && $post = get_post() )
$post = get_post( $post->post_parent );
else
$post = get_adjacent_post( $in_same_cat, $excluded_categories, $previous );
if ( empty($post) )
return;
if ( empty($post->post_title) )
$post_title = $previous ? __('Previous Post') : __('Next Post');
else
$post_title = $post->post_title;
$date = mysql2date(get_option('date_format'), $post->post_date);
$title = str_replace('%title', $post_title, $title);
$title = str_replace('%date', $date, $title);
$title = apply_filters('the_title', $title, $post->ID);
$link = $previous ? "<link rel='prev' title='" : "<link rel='next' title='";
$link .= esc_attr( $title );
$link .= "' href='" . get_permalink($post) . "' />\n";
$adjacent = $previous ? 'previous' : 'next';
return apply_filters( "{$adjacent}_post_rel_link", $link );
}
/**
* Display relational links for the posts adjacent to the current post.
*
* @since 2.8.0
*
* @param string $title Optional. Link title format.
* @param bool $in_same_cat Optional. Whether link should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
*/
function adjacent_posts_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
echo get_adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', true);
echo get_adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', false);
}
/**
* Display relational links for the posts adjacent to the current post for single post pages.
*
* This is meant to be attached to actions like 'wp_head'. Do not call this directly in plugins or theme templates.
* @since 3.0.0
*
*/
function adjacent_posts_rel_link_wp_head() {
if ( !is_singular() || is_attachment() )
return;
adjacent_posts_rel_link();
}
/**
* Display relational link for the next post adjacent to the current post.
*
* @since 2.8.0
*
* @param string $title Optional. Link title format.
* @param bool $in_same_cat Optional. Whether link should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
*/
function next_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
echo get_adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', false);
}
/**
* Display relational link for the previous post adjacent to the current post.
*
* @since 2.8.0
*
* @param string $title Optional. Link title format.
* @param bool $in_same_cat Optional. Whether link should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
*/
function prev_post_rel_link($title = '%title', $in_same_cat = false, $excluded_categories = '') {
echo get_adjacent_post_rel_link($title, $in_same_cat, $excluded_categories = '', true);
}
/**
* Retrieve boundary post.
*
* Boundary being either the first or last post by publish date within the constraints specified
* by $in_same_cat or $excluded_categories.
*
* @since 2.8.0
*
* @param bool $in_same_cat Optional. Whether returned post should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
* @param bool $start Optional. Whether to retrieve first or last post.
* @return object
*/
function get_boundary_post( $in_same_cat = false, $excluded_categories = '', $start = true ) {
$post = get_post();
if ( ! $post || ! is_single() || is_attachment() )
return null;
$cat_array = array();
if( ! is_array( $excluded_categories ) )
$excluded_categories = explode( ',', $excluded_categories );
if ( $in_same_cat || ! empty( $excluded_categories ) ) {
if ( $in_same_cat )
$cat_array = wp_get_object_terms( $post->ID, 'category', array( 'fields' => 'ids' ) );
if ( ! empty( $excluded_categories ) ) {
$excluded_categories = array_map( 'intval', $excluded_categories );
$excluded_categories = array_diff( $excluded_categories, $cat_array );
$inverse_cats = array();
foreach ( $excluded_categories as $excluded_category )
$inverse_cats[] = $excluded_category * -1;
$excluded_categories = $inverse_cats;
}
}
$categories = implode( ',', array_merge( $cat_array, $excluded_categories ) );
$order = $start ? 'ASC' : 'DESC';
return get_posts( array('numberposts' => 1, 'category' => $categories, 'order' => $order, 'update_post_term_cache' => false, 'update_post_meta_cache' => false) );
}
/**
* Display previous post link that is adjacent to the current post.
*
* @since 1.5.0
*
* @param string $format Optional. Link anchor format.
* @param string $link Optional. Link permalink format.
* @param bool $in_same_cat Optional. Whether link should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
*/
function previous_post_link($format='&laquo; %link', $link='%title', $in_same_cat = false, $excluded_categories = '') {
adjacent_post_link($format, $link, $in_same_cat, $excluded_categories, true);
}
/**
* Display next post link that is adjacent to the current post.
*
* @since 1.5.0
*
* @param string $format Optional. Link anchor format.
* @param string $link Optional. Link permalink format.
* @param bool $in_same_cat Optional. Whether link should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
*/
function next_post_link($format='%link &raquo;', $link='%title', $in_same_cat = false, $excluded_categories = '') {
adjacent_post_link($format, $link, $in_same_cat, $excluded_categories, false);
}
/**
* Display adjacent post link.
*
* Can be either next post link or previous.
*
* @since 2.5.0
*
* @param string $format Link anchor format.
* @param string $link Link permalink format.
* @param bool $in_same_cat Optional. Whether link should be in a same category.
* @param array|string $excluded_categories Optional. Array or comma-separated list of excluded category IDs.
* @param bool $previous Optional, default is true. Whether to display link to previous or next post.
*/
function adjacent_post_link( $format, $link, $in_same_cat = false, $excluded_categories = '', $previous = true ) {
if ( $previous && is_attachment() )
$post = get_post( get_post()->post_parent );
else
$post = get_adjacent_post( $in_same_cat, $excluded_categories, $previous );
if ( ! $post ) {
$output = '';
} else {
$title = $post->post_title;
if ( empty( $post->post_title ) )
$title = $previous ? __( 'Previous Post' ) : __( 'Next Post' );
$title = apply_filters( 'the_title', $title, $post->ID );
$date = mysql2date( get_option( 'date_format' ), $post->post_date );
$rel = $previous ? 'prev' : 'next';
$string = '<a href="' . get_permalink( $post ) . '" rel="'.$rel.'">';
$inlink = str_replace( '%title', $title, $link );
$inlink = str_replace( '%date', $date, $inlink );
$inlink = $string . $inlink . '</a>';
$output = str_replace( '%link', $inlink, $format );
}
$adjacent = $previous ? 'previous' : 'next';
echo apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post );
}
/**
* Retrieve links for page numbers.
*
* @since 1.5.0
*
* @param int $pagenum Optional. Page ID.
* @param bool $escape Optional. Whether to escape the URL for display, with esc_url(). Defaults to true.
* Otherwise, prepares the URL with esc_url_raw().
* @return string
*/
function get_pagenum_link($pagenum = 1, $escape = true ) {
global $wp_rewrite;
$pagenum = (int) $pagenum;
$request = remove_query_arg( 'paged' );
$home_root = parse_url(home_url());
$home_root = ( isset($home_root['path']) ) ? $home_root['path'] : '';
$home_root = preg_quote( $home_root, '|' );
$request = preg_replace('|^'. $home_root . '|i', '', $request);
$request = preg_replace('|^/+|', '', $request);
if ( !$wp_rewrite->using_permalinks() || is_admin() ) {
$base = trailingslashit( get_bloginfo( 'url' ) );
if ( $pagenum > 1 ) {
$result = add_query_arg( 'paged', $pagenum, $base . $request );
} else {
$result = $base . $request;
}
} else {
$qs_regex = '|\?.*?$|';
preg_match( $qs_regex, $request, $qs_match );
if ( !empty( $qs_match[0] ) ) {
$query_string = $qs_match[0];
$request = preg_replace( $qs_regex, '', $request );
} else {
$query_string = '';
}
$request = preg_replace( "|$wp_rewrite->pagination_base/\d+/?$|", '', $request);
$request = preg_replace( '|^' . preg_quote( $wp_rewrite->index, '|' ) . '|i', '', $request);
$request = ltrim($request, '/');
$base = trailingslashit( get_bloginfo( 'url' ) );
if ( $wp_rewrite->using_index_permalinks() && ( $pagenum > 1 || '' != $request ) )
$base .= $wp_rewrite->index . '/';
if ( $pagenum > 1 ) {
$request = ( ( !empty( $request ) ) ? trailingslashit( $request ) : $request ) . user_trailingslashit( $wp_rewrite->pagination_base . "/" . $pagenum, 'paged' );
}
$result = $base . $request . $query_string;
}
$result = apply_filters('get_pagenum_link', $result);
if ( $escape )
return esc_url( $result );
else
return esc_url_raw( $result );
}
/**
* Retrieve next posts page link.
*
* Backported from 2.1.3 to 2.0.10.
*
* @since 2.0.10
*
* @param int $max_page Optional. Max pages.
* @return string
*/
function get_next_posts_page_link($max_page = 0) {
global $paged;
if ( !is_single() ) {
if ( !$paged )
$paged = 1;
$nextpage = intval($paged) + 1;
if ( !$max_page || $max_page >= $nextpage )
return get_pagenum_link($nextpage);
}
}
/**
* Display or return the next posts page link.
*
* @since 0.71
*
* @param int $max_page Optional. Max pages.
* @param boolean $echo Optional. Echo or return;
*/
function next_posts( $max_page = 0, $echo = true ) {
$output = esc_url( get_next_posts_page_link( $max_page ) );
if ( $echo )
echo $output;
else
return $output;
}
/**
* Return the next posts page link.
*
* @since 2.7.0
*
* @param string $label Content for link text.
* @param int $max_page Optional. Max pages.
* @return string|null
*/
function get_next_posts_link( $label = null, $max_page = 0 ) {
global $paged, $wp_query;
if ( !$max_page )
$max_page = $wp_query->max_num_pages;
if ( !$paged )
$paged = 1;
$nextpage = intval($paged) + 1;
if ( null === $label )
$label = __( 'Next Page &raquo;' );
if ( !is_single() && ( $nextpage <= $max_page ) ) {
$attr = apply_filters( 'next_posts_link_attributes', '' );
return '<a href="' . next_posts( $max_page, false ) . "\" $attr>" . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label) . '</a>';
}
}
/**
* Display the next posts page link.
*
* @since 0.71
* @uses get_next_posts_link()
*
* @param string $label Content for link text.
* @param int $max_page Optional. Max pages.
*/
function next_posts_link( $label = null, $max_page = 0 ) {
echo get_next_posts_link( $label, $max_page );
}
/**
* Retrieve previous posts page link.
*
* Will only return string, if not on a single page or post.
*
* Backported to 2.0.10 from 2.1.3.
*
* @since 2.0.10
*
* @return string|null
*/
function get_previous_posts_page_link() {
global $paged;
if ( !is_single() ) {
$nextpage = intval($paged) - 1;
if ( $nextpage < 1 )
$nextpage = 1;
return get_pagenum_link($nextpage);
}
}
/**
* Display or return the previous posts page link.
*
* @since 0.71
*
* @param boolean $echo Optional. Echo or return;
*/
function previous_posts( $echo = true ) {
$output = esc_url( get_previous_posts_page_link() );
if ( $echo )
echo $output;
else
return $output;
}
/**
* Return the previous posts page link.
*
* @since 2.7.0
*
* @param string $label Optional. Previous page link text.
* @return string|null
*/
function get_previous_posts_link( $label = null ) {
global $paged;
if ( null === $label )
$label = __( '&laquo; Previous Page' );
if ( !is_single() && $paged > 1 ) {
$attr = apply_filters( 'previous_posts_link_attributes', '' );
return '<a href="' . previous_posts( false ) . "\" $attr>". preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label ) .'</a>';
}
}
/**
* Display the previous posts page link.
*
* @since 0.71
* @uses get_previous_posts_link()
*
* @param string $label Optional. Previous page link text.
*/
function previous_posts_link( $label = null ) {
echo get_previous_posts_link( $label );
}
/**
* Return post pages link navigation for previous and next pages.
*
* @since 2.8
*
* @param string|array $args Optional args.
* @return string The posts link navigation.
*/
function get_posts_nav_link( $args = array() ) {
global $wp_query;
$return = '';
if ( !is_singular() ) {
$defaults = array(
'sep' => ' &#8212; ',
'prelabel' => __('&laquo; Previous Page'),
'nxtlabel' => __('Next Page &raquo;'),
);
$args = wp_parse_args( $args, $defaults );
$max_num_pages = $wp_query->max_num_pages;
$paged = get_query_var('paged');
//only have sep if there's both prev and next results
if ($paged < 2 || $paged >= $max_num_pages) {
$args['sep'] = '';
}
if ( $max_num_pages > 1 ) {
$return = get_previous_posts_link($args['prelabel']);
$return .= preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $args['sep']);
$return .= get_next_posts_link($args['nxtlabel']);
}
}
return $return;
}
/**
* Display post pages link navigation for previous and next pages.
*
* @since 0.71
*
* @param string $sep Optional. Separator for posts navigation links.
* @param string $prelabel Optional. Label for previous pages.
* @param string $nxtlabel Optional Label for next pages.
*/
function posts_nav_link( $sep = '', $prelabel = '', $nxtlabel = '' ) {
$args = array_filter( compact('sep', 'prelabel', 'nxtlabel') );
echo get_posts_nav_link($args);
}
/**
* Retrieve comments page number link.
*
* @since 2.7.0
*
* @param int $pagenum Optional. Page number.
* @return string
*/
function get_comments_pagenum_link( $pagenum = 1, $max_page = 0 ) {
global $wp_rewrite;
$pagenum = (int) $pagenum;
$result = get_permalink();
if ( 'newest' == get_option('default_comments_page') ) {
if ( $pagenum != $max_page ) {
if ( $wp_rewrite->using_permalinks() )
$result = user_trailingslashit( trailingslashit($result) . 'comment-page-' . $pagenum, 'commentpaged');
else
$result = add_query_arg( 'cpage', $pagenum, $result );
}
} elseif ( $pagenum > 1 ) {
if ( $wp_rewrite->using_permalinks() )
$result = user_trailingslashit( trailingslashit($result) . 'comment-page-' . $pagenum, 'commentpaged');
else
$result = add_query_arg( 'cpage', $pagenum, $result );
}
$result .= '#comments';
$result = apply_filters('get_comments_pagenum_link', $result);
return $result;
}
/**
* Return the link to next comments page.
*
* @since 2.7.1
*
* @param string $label Optional. Label for link text.
* @param int $max_page Optional. Max page.
* @return string|null
*/
function get_next_comments_link( $label = '', $max_page = 0 ) {
global $wp_query;
if ( !is_singular() || !get_option('page_comments') )
return;
$page = get_query_var('cpage');
$nextpage = intval($page) + 1;
if ( empty($max_page) )
$max_page = $wp_query->max_num_comment_pages;
if ( empty($max_page) )
$max_page = get_comment_pages_count();
if ( $nextpage > $max_page )
return;
if ( empty($label) )
$label = __('Newer Comments &raquo;');
return '<a href="' . esc_url( get_comments_pagenum_link( $nextpage, $max_page ) ) . '" ' . apply_filters( 'next_comments_link_attributes', '' ) . '>'. preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label) .'</a>';
}
/**
* Display the link to next comments page.
*
* @since 2.7.0
*
* @param string $label Optional. Label for link text.
* @param int $max_page Optional. Max page.
*/
function next_comments_link( $label = '', $max_page = 0 ) {
echo get_next_comments_link( $label, $max_page );
}
/**
* Return the previous comments page link.
*
* @since 2.7.1
*
* @param string $label Optional. Label for comments link text.
* @return string|null
*/
function get_previous_comments_link( $label = '' ) {
if ( !is_singular() || !get_option('page_comments') )
return;
$page = get_query_var('cpage');
if ( intval($page) <= 1 )
return;
$prevpage = intval($page) - 1;
if ( empty($label) )
$label = __('&laquo; Older Comments');
return '<a href="' . esc_url( get_comments_pagenum_link( $prevpage ) ) . '" ' . apply_filters( 'previous_comments_link_attributes', '' ) . '>' . preg_replace('/&([^#])(?![a-z]{1,8};)/i', '&#038;$1', $label) .'</a>';
}
/**
* Display the previous comments page link.
*
* @since 2.7.0
*
* @param string $label Optional. Label for comments link text.
*/
function previous_comments_link( $label = '' ) {
echo get_previous_comments_link( $label );
}
/**
* Create pagination links for the comments on the current post.
*
* @see paginate_links()
* @since 2.7.0
*
* @param string|array $args Optional args. See paginate_links().
* @return string Markup for pagination links.
*/
function paginate_comments_links($args = array()) {
global $wp_rewrite;
if ( !is_singular() || !get_option('page_comments') )
return;
$page = get_query_var('cpage');
if ( !$page )
$page = 1;
$max_page = get_comment_pages_count();
$defaults = array(
'base' => add_query_arg( 'cpage', '%#%' ),
'format' => '',
'total' => $max_page,
'current' => $page,
'echo' => true,
'add_fragment' => '#comments'
);
if ( $wp_rewrite->using_permalinks() )
$defaults['base'] = user_trailingslashit(trailingslashit(get_permalink()) . 'comment-page-%#%', 'commentpaged');
$args = wp_parse_args( $args, $defaults );
$page_links = paginate_links( $args );
if ( $args['echo'] )
echo $page_links;
else
return $page_links;
}
/**
* Retrieve the Press This bookmarklet link.
*
* Use this in 'a' element 'href' attribute.
*
* @since 2.6.0
*
* @return string
*/
function get_shortcut_link() {
// In case of breaking changes, version this. #WP20071
$link = "javascript:
var d=document,
w=window,
e=w.getSelection,
k=d.getSelection,
x=d.selection,
s=(e?e():(k)?k():(x?x.createRange().text:0)),
f='" . admin_url('press-this.php') . "',
l=d.location,
e=encodeURIComponent,
u=f+'?u='+e(l.href)+'&t='+e(d.title)+'&s='+e(s)+'&v=4';
a=function(){if(!w.open(u,'t','toolbar=0,resizable=1,scrollbars=1,status=1,width=720,height=570'))l.href=u;};
if (/Firefox/.test(navigator.userAgent)) setTimeout(a, 0); else a();
void(0)";
$link = str_replace(array("\r", "\n", "\t"), '', $link);
return apply_filters('shortcut_link', $link);
}
/**
* Retrieve the home url for the current site.
*
* Returns the 'home' option with the appropriate protocol, 'https' if
* is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
* overridden.
*
* @package WordPress
* @since 3.0.0
*
* @uses get_home_url()
*
* @param string $path (optional) Path relative to the home url.
* @param string $scheme (optional) Scheme to give the home url context. Currently 'http', 'https', or 'relative'.
* @return string Home url link with optional path appended.
*/
function home_url( $path = '', $scheme = null ) {
return get_home_url( null, $path, $scheme );
}
/**
* Retrieve the home url for a given site.
*
* Returns the 'home' option with the appropriate protocol, 'https' if
* is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
* overridden.
*
* @package WordPress
* @since 3.0.0
*
* @param int $blog_id (optional) Blog ID. Defaults to current blog.
* @param string $path (optional) Path relative to the home url.
* @param string $scheme (optional) Scheme to give the home url context. Currently 'http', 'https', or 'relative'.
* @return string Home url link with optional path appended.
*/
function get_home_url( $blog_id = null, $path = '', $scheme = null ) {
$orig_scheme = $scheme;
if ( empty( $blog_id ) || !is_multisite() ) {
$url = get_option( 'home' );
} else {
switch_to_blog( $blog_id );
$url = get_option( 'home' );
restore_current_blog();
}
if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) {
if ( is_ssl() && ! is_admin() )
$scheme = 'https';
else
$scheme = parse_url( $url, PHP_URL_SCHEME );
}
$url = set_url_scheme( $url, $scheme );
if ( $path && is_string( $path ) )
$url .= '/' . ltrim( $path, '/' );
return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id );
}
/**
* Retrieve the site url for the current site.
*
* Returns the 'site_url' option with the appropriate protocol, 'https' if
* is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
* overridden.
*
* @package WordPress
* @since 2.6.0
*
* @uses get_site_url()
*
* @param string $path Optional. Path relative to the site url.
* @param string $scheme Optional. Scheme to give the site url context. See set_url_scheme().
* @return string Site url link with optional path appended.
*/
function site_url( $path = '', $scheme = null ) {
return get_site_url( null, $path, $scheme );
}
/**
* Retrieve the site url for a given site.
*
* Returns the 'site_url' option with the appropriate protocol, 'https' if
* is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
* overridden.
*
* @package WordPress
* @since 3.0.0
*
* @param int $blog_id (optional) Blog ID. Defaults to current blog.
* @param string $path Optional. Path relative to the site url.
* @param string $scheme Optional. Scheme to give the site url context. Currently 'http', 'https', 'login', 'login_post', 'admin', or 'relative'.
* @return string Site url link with optional path appended.
*/
function get_site_url( $blog_id = null, $path = '', $scheme = null ) {
if ( empty( $blog_id ) || !is_multisite() ) {
$url = get_option( 'siteurl' );
} else {
switch_to_blog( $blog_id );
$url = get_option( 'siteurl' );
restore_current_blog();
}
$url = set_url_scheme( $url, $scheme );
if ( $path && is_string( $path ) )
$url .= '/' . ltrim( $path, '/' );
return apply_filters( 'site_url', $url, $path, $scheme, $blog_id );
}
/**
* Retrieve the url to the admin area for the current site.
*
* @package WordPress
* @since 2.6.0
*
* @param string $path Optional path relative to the admin url.
* @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
* @return string Admin url link with optional path appended.
*/
function admin_url( $path = '', $scheme = 'admin' ) {
return get_admin_url( null, $path, $scheme );
}
/**
* Retrieve the url to the admin area for a given site.
*
* @package WordPress
* @since 3.0.0
*
* @param int $blog_id (optional) Blog ID. Defaults to current blog.
* @param string $path Optional path relative to the admin url.
* @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
* @return string Admin url link with optional path appended.
*/
function get_admin_url( $blog_id = null, $path = '', $scheme = 'admin' ) {
$url = get_site_url($blog_id, 'wp-admin/', $scheme);
if ( $path && is_string( $path ) )
$url .= ltrim( $path, '/' );
return apply_filters( 'admin_url', $url, $path, $blog_id );
}
/**
* Retrieve the url to the includes directory.
*
* @package WordPress
* @since 2.6.0
*
* @param string $path Optional. Path relative to the includes url.
* @return string Includes url link with optional path appended.
*/
function includes_url($path = '') {
$url = site_url() . '/' . WPINC . '/';
if ( $path && is_string( $path ) )
$url .= ltrim($path, '/');
return apply_filters('includes_url', $url, $path);
}
/**
* Retrieve the url to the content directory.
*
* @package WordPress
* @since 2.6.0
*
* @param string $path Optional. Path relative to the content url.
* @return string Content url link with optional path appended.
*/
function content_url($path = '') {
$url = set_url_scheme( WP_CONTENT_URL );
if ( $path && is_string( $path ) )
$url .= '/' . ltrim($path, '/');
return apply_filters('content_url', $url, $path);
}
/**
* Retrieve the url to the plugins directory or to a specific file within that directory.
* You can hardcode the plugin slug in $path or pass __FILE__ as a second argument to get the correct folder name.
*
* @package WordPress
* @since 2.6.0
*
* @param string $path Optional. Path relative to the plugins url.
* @param string $plugin Optional. The plugin file that you want to be relative to - i.e. pass in __FILE__
* @return string Plugins url link with optional path appended.
*/
function plugins_url($path = '', $plugin = '') {
$mu_plugin_dir = WPMU_PLUGIN_DIR;
foreach ( array('path', 'plugin', 'mu_plugin_dir') as $var ) {
$$var = str_replace('\\' ,'/', $$var); // sanitize for Win32 installs
$$var = preg_replace('|/+|', '/', $$var);
}
if ( !empty($plugin) && 0 === strpos($plugin, $mu_plugin_dir) )
$url = WPMU_PLUGIN_URL;
else
$url = WP_PLUGIN_URL;
$url = set_url_scheme( $url );
if ( !empty($plugin) && is_string($plugin) ) {
$folder = dirname(plugin_basename($plugin));
if ( '.' != $folder )
$url .= '/' . ltrim($folder, '/');
}
if ( $path && is_string( $path ) )
$url .= '/' . ltrim($path, '/');
return apply_filters('plugins_url', $url, $path, $plugin);
}
/**
* Retrieve the site url for the current network.
*
* Returns the site url with the appropriate protocol, 'https' if
* is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
* overridden.
*
* @package WordPress
* @since 3.0.0
*
* @param string $path Optional. Path relative to the site url.
* @param string $scheme Optional. Scheme to give the site url context. See set_url_scheme().
* @return string Site url link with optional path appended.
*/
function network_site_url( $path = '', $scheme = null ) {
global $current_site;
if ( ! is_multisite() )
return site_url($path, $scheme);
if ( 'relative' == $scheme )
$url = $current_site->path;
else
$url = set_url_scheme( 'http://' . $current_site->domain . $current_site->path, $scheme );
if ( $path && is_string( $path ) )
$url .= ltrim( $path, '/' );
return apply_filters( 'network_site_url', $url, $path, $scheme );
}
/**
* Retrieve the home url for the current network.
*
* Returns the home url with the appropriate protocol, 'https' if
* is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is
* overridden.
*
* @package WordPress
* @since 3.0.0
*
* @param string $path (optional) Path relative to the home url.
* @param string $scheme (optional) Scheme to give the home url context. Currently 'http', 'https', or 'relative'.
* @return string Home url link with optional path appended.
*/
function network_home_url( $path = '', $scheme = null ) {
global $current_site;
if ( ! is_multisite() )
return home_url($path, $scheme);
$orig_scheme = $scheme;
if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) )
$scheme = is_ssl() && ! is_admin() ? 'https' : 'http';
if ( 'relative' == $scheme )
$url = $current_site->path;
else
$url = set_url_scheme( 'http://' . $current_site->domain . $current_site->path, $scheme );
if ( $path && is_string( $path ) )
$url .= ltrim( $path, '/' );
return apply_filters( 'network_home_url', $url, $path, $orig_scheme);
}
/**
* Retrieve the url to the admin area for the network.
*
* @package WordPress
* @since 3.0.0
*
* @param string $path Optional path relative to the admin url.
* @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
* @return string Admin url link with optional path appended.
*/
function network_admin_url( $path = '', $scheme = 'admin' ) {
if ( ! is_multisite() )
return admin_url( $path, $scheme );
$url = network_site_url('wp-admin/network/', $scheme);
if ( $path && is_string( $path ) )
$url .= ltrim($path, '/');
return apply_filters('network_admin_url', $url, $path);
}
/**
* Retrieve the url to the admin area for the current user.
*
* @package WordPress
* @since 3.0.0
*
* @param string $path Optional path relative to the admin url.
* @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
* @return string Admin url link with optional path appended.
*/
function user_admin_url( $path = '', $scheme = 'admin' ) {
$url = network_site_url('wp-admin/user/', $scheme);
if ( $path && is_string( $path ) )
$url .= ltrim($path, '/');
return apply_filters('user_admin_url', $url, $path);
}
/**
* Retrieve the url to the admin area for either the current blog or the network depending on context.
*
* @package WordPress
* @since 3.1.0
*
* @param string $path Optional path relative to the admin url.
* @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
* @return string Admin url link with optional path appended.
*/
function self_admin_url($path = '', $scheme = 'admin') {
if ( is_network_admin() )
return network_admin_url($path, $scheme);
elseif ( is_user_admin() )
return user_admin_url($path, $scheme);
else
return admin_url($path, $scheme);
}
/**
* Set the scheme for a URL
*
* @since 3.4.0
*
* @param string $url Absolute url that includes a scheme
* @param string $scheme Optional. Scheme to give $url. Currently 'http', 'https', 'login', 'login_post', 'admin', or 'relative'.
* @return string $url URL with chosen scheme.
*/
function set_url_scheme( $url, $scheme = null ) {
$orig_scheme = $scheme;
if ( ! in_array( $scheme, array( 'http', 'https', 'relative' ) ) ) {
if ( ( 'login_post' == $scheme || 'rpc' == $scheme ) && ( force_ssl_login() || force_ssl_admin() ) )
$scheme = 'https';
elseif ( ( 'login' == $scheme ) && force_ssl_admin() )
$scheme = 'https';
elseif ( ( 'admin' == $scheme ) && force_ssl_admin() )
$scheme = 'https';
else
$scheme = ( is_ssl() ? 'https' : 'http' );
}
if ( 'relative' == $scheme )
$url = preg_replace( '#^.+://[^/]*#', '', $url );
else
$url = preg_replace( '#^.+://#', $scheme . '://', $url );
return apply_filters( 'set_url_scheme', $url, $scheme, $orig_scheme );
}
/**
* Get the URL to the user's dashboard.
*
* If a user does not belong to any site, the global user dashboard is used. If the user belongs to the current site,
* the dashboard for the current site is returned. If the user cannot edit the current site, the dashboard to the user's
* primary blog is returned.
*
* @since 3.1.0
*
* @param int $user_id User ID
* @param string $path Optional path relative to the dashboard. Use only paths known to both blog and user admins.
* @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
* @return string Dashboard url link with optional path appended.
*/
function get_dashboard_url( $user_id, $path = '', $scheme = 'admin' ) {
$user_id = (int) $user_id;
$blogs = get_blogs_of_user( $user_id );
if ( ! is_super_admin() && empty($blogs) ) {
$url = user_admin_url( $path, $scheme );
} elseif ( ! is_multisite() ) {
$url = admin_url( $path, $scheme );
} else {
$current_blog = get_current_blog_id();
if ( $current_blog && ( is_super_admin( $user_id ) || in_array( $current_blog, array_keys( $blogs ) ) ) ) {
$url = admin_url( $path, $scheme );
} else {
$active = get_active_blog_for_user( $user_id );
if ( $active )
$url = get_admin_url( $active->blog_id, $path, $scheme );
else
$url = user_admin_url( $path, $scheme );
}
}
return apply_filters( 'user_dashboard_url', $url, $user_id, $path, $scheme);
}
/**
* Get the URL to the user's profile editor.
*
* @since 3.1.0
*
* @param int $user User ID
* @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes.
* @return string Dashboard url link with optional path appended.
*/
function get_edit_profile_url( $user, $scheme = 'admin' ) {
$user = (int) $user;
if ( is_user_admin() )
$url = user_admin_url( 'profile.php', $scheme );
elseif ( is_network_admin() )
$url = network_admin_url( 'profile.php', $scheme );
else
$url = get_dashboard_url( $user, 'profile.php', $scheme );
return apply_filters( 'edit_profile_url', $url, $user, $scheme);
}
/**
* Output rel=canonical for singular queries.
*
* @package WordPress
* @since 2.9.0
*/
function rel_canonical() {
if ( !is_singular() )
return;
global $wp_the_query;
if ( !$id = $wp_the_query->get_queried_object_id() )
return;
$link = get_permalink( $id );
if ( $page = get_query_var('cpage') )
$link = get_comments_pagenum_link( $page );
echo "<link rel='canonical' href='$link' />\n";
}
/**
* Return a shortlink for a post, page, attachment, or blog.
*
* This function exists to provide a shortlink tag that all themes and plugins can target. A plugin must hook in to
* provide the actual shortlinks. Default shortlink support is limited to providing ?p= style links for posts.
* Plugins can short-circuit this function via the pre_get_shortlink filter or filter the output
* via the get_shortlink filter.
*
* @since 3.0.0.
*
* @param int $id A post or blog id. Default is 0, which means the current post or blog.
* @param string $context Whether the id is a 'blog' id, 'post' id, or 'media' id. If 'post', the post_type of the post is consulted. If 'query', the current query is consulted to determine the id and context. Default is 'post'.
* @param bool $allow_slugs Whether to allow post slugs in the shortlink. It is up to the plugin how and whether to honor this.
* @return string A shortlink or an empty string if no shortlink exists for the requested resource or if shortlinks are not enabled.
*/
function wp_get_shortlink($id = 0, $context = 'post', $allow_slugs = true) {
// Allow plugins to short-circuit this function.
$shortlink = apply_filters('pre_get_shortlink', false, $id, $context, $allow_slugs);
if ( false !== $shortlink )
return $shortlink;
global $wp_query;
$post_id = 0;
if ( 'query' == $context && is_single() ) {
$post_id = $wp_query->get_queried_object_id();
} elseif ( 'post' == $context ) {
$post = get_post($id);
$post_id = $post->ID;
}
$shortlink = '';
// Return p= link for posts.
if ( !empty($post_id) && '' != get_option('permalink_structure') ) {
$post = get_post($post_id);
if ( isset($post->post_type) && 'post' == $post->post_type )
$shortlink = home_url('?p=' . $post->ID);
}
return apply_filters('get_shortlink', $shortlink, $id, $context, $allow_slugs);
}
/**
* Inject rel=shortlink into head if a shortlink is defined for the current page.
*
* Attached to the wp_head action.
*
* @since 3.0.0
*
* @uses wp_get_shortlink()
*/
function wp_shortlink_wp_head() {
$shortlink = wp_get_shortlink( 0, 'query' );
if ( empty( $shortlink ) )
return;
echo "<link rel='shortlink' href='" . esc_url( $shortlink ) . "' />\n";
}
/**
* Send a Link: rel=shortlink header if a shortlink is defined for the current page.
*
* Attached to the wp action.
*
* @since 3.0.0
*
* @uses wp_get_shortlink()
*/
function wp_shortlink_header() {
if ( headers_sent() )
return;
$shortlink = wp_get_shortlink(0, 'query');
if ( empty($shortlink) )
return;
header('Link: <' . $shortlink . '>; rel=shortlink', false);
}
/**
* Display the Short Link for a Post
*
* Must be called from inside "The Loop"
*
* Call like the_shortlink(__('Shortlinkage FTW'))
*
* @since 3.0.0
*
* @param string $text Optional The link text or HTML to be displayed. Defaults to 'This is the short link.'
* @param string $title Optional The tooltip for the link. Must be sanitized. Defaults to the sanitized post title.
* @param string $before Optional HTML to display before the link.
* @param string $after Optional HTML to display after the link.
*/
function the_shortlink( $text = '', $title = '', $before = '', $after = '' ) {
$post = get_post();
if ( empty( $text ) )
$text = __('This is the short link.');
if ( empty( $title ) )
$title = the_title_attribute( array( 'echo' => false ) );
$shortlink = wp_get_shortlink( $post->ID );
if ( !empty( $shortlink ) ) {
$link = '<a rel="shortlink" href="' . esc_url( $shortlink ) . '" title="' . $title . '">' . $text . '</a>';
$link = apply_filters( 'the_shortlink', $link, $shortlink, $text, $title );
echo $before, $link, $after;
}
}
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