mirror of
https://github.com/WordPress/WordPress.git
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e11cb17f77
* add_chat_detection_format() — to add a chat regex pattern * get_content_chat() — to grab a chat from content * get_the_chat() — grab the chat from the current (or passed) post * the_chat() — output the chat in formatted HTML * paginate_content() — puts the <!--nextpage--> splitting stuff into a function * get_paged_content() — grabs a page of raw content, needed to paginate chats properly see #23625. props wonderboymusic, lancewillett. git-svn-id: http://core.svn.wordpress.org/trunk@23804 1a063a9b-81f0-0310-95a4-ce76da25c4cd
681 lines
18 KiB
PHP
681 lines
18 KiB
PHP
<?php
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/**
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* Post format functions.
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*
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* @package WordPress
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* @subpackage Post
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*/
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/**
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* Retrieve the format slug for a post
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*
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* @since 3.1.0
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*
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* @param int|object $post A post
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*
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* @return mixed The format if successful. False if no format is set. WP_Error if errors.
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*/
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function get_post_format( $post = null ) {
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$post = get_post($post);
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if ( ! post_type_supports( $post->post_type, 'post-formats' ) )
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return false;
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$_format = get_the_terms( $post->ID, 'post_format' );
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if ( empty( $_format ) )
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return false;
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$format = array_shift( $_format );
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return ( str_replace('post-format-', '', $format->slug ) );
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}
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/**
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* Check if a post has a particular format
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*
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* @since 3.1.0
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* @uses has_term()
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*
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* @param string $format The format to check for
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* @param object|id $post The post to check. If not supplied, defaults to the current post if used in the loop.
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* @return bool True if the post has the format, false otherwise.
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*/
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function has_post_format( $format, $post = null ) {
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return has_term('post-format-' . sanitize_key($format), 'post_format', $post);
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}
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/**
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* Assign a format to a post
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*
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* @since 3.1.0
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*
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* @param int|object $post The post for which to assign a format
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* @param string $format A format to assign. Use an empty string or array to remove all formats from the post.
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* @return mixed WP_Error on error. Array of affected term IDs on success.
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*/
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function set_post_format( $post, $format ) {
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$post = get_post($post);
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if ( empty($post) )
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return new WP_Error('invalid_post', __('Invalid post'));
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if ( !empty($format) ) {
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$format = sanitize_key($format);
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if ( 'standard' == $format || !in_array( $format, array_keys( get_post_format_slugs() ) ) )
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$format = '';
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else
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$format = 'post-format-' . $format;
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}
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return wp_set_post_terms($post->ID, $format, 'post_format');
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}
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/**
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* Retrieve post format metadata for a post
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*
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* @since 3.6.0
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*
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* @param int $post_id
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* @return null
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*/
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function get_post_format_meta( $post_id = 0 ) {
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$values = array(
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'quote' => '',
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'quote_source' => '',
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'url' => '',
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'media' => '',
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);
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foreach ( $values as $key => $value )
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$values[$key] = get_post_meta( $post_id, '_wp_format_' . $key, true );
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return $values;
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}
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/**
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* Returns an array of post format slugs to their translated and pretty display versions
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*
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* @since 3.1.0
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*
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* @return array The array of translations
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*/
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function get_post_format_strings() {
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$strings = array(
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'standard' => _x( 'Standard', 'Post format' ), // Special case. any value that evals to false will be considered standard
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'aside' => _x( 'Aside', 'Post format' ),
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'chat' => _x( 'Chat', 'Post format' ),
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'gallery' => _x( 'Gallery', 'Post format' ),
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'link' => _x( 'Link', 'Post format' ),
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'image' => _x( 'Image', 'Post format' ),
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'quote' => _x( 'Quote', 'Post format' ),
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'status' => _x( 'Status', 'Post format' ),
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'video' => _x( 'Video', 'Post format' ),
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'audio' => _x( 'Audio', 'Post format' ),
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);
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return $strings;
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}
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/**
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* Retrieves an array of post format slugs.
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*
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* @since 3.1.0
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*
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* @return array The array of post format slugs.
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*/
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function get_post_format_slugs() {
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$slugs = array_keys( get_post_format_strings() );
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return array_combine( $slugs, $slugs );
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}
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/**
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* Returns a pretty, translated version of a post format slug
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*
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* @since 3.1.0
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*
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* @param string $slug A post format slug
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* @return string The translated post format name
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*/
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function get_post_format_string( $slug ) {
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$strings = get_post_format_strings();
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if ( !$slug )
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return $strings['standard'];
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else
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return ( isset( $strings[$slug] ) ) ? $strings[$slug] : '';
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}
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/**
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* Returns a link to a post format index.
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*
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* @since 3.1.0
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*
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* @param string $format Post format
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* @return string Link
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*/
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function get_post_format_link( $format ) {
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$term = get_term_by('slug', 'post-format-' . $format, 'post_format' );
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if ( ! $term || is_wp_error( $term ) )
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return false;
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return get_term_link( $term );
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}
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/**
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* Filters the request to allow for the format prefix.
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*
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* @access private
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* @since 3.1.0
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*/
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function _post_format_request( $qvs ) {
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if ( ! isset( $qvs['post_format'] ) )
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return $qvs;
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$slugs = get_post_format_slugs();
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if ( isset( $slugs[ $qvs['post_format'] ] ) )
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$qvs['post_format'] = 'post-format-' . $slugs[ $qvs['post_format'] ];
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$tax = get_taxonomy( 'post_format' );
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if ( ! is_admin() )
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$qvs['post_type'] = $tax->object_type;
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return $qvs;
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}
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add_filter( 'request', '_post_format_request' );
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/**
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* Filters the post format term link to remove the format prefix.
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*
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* @access private
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* @since 3.1.0
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*/
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function _post_format_link( $link, $term, $taxonomy ) {
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global $wp_rewrite;
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if ( 'post_format' != $taxonomy )
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return $link;
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if ( $wp_rewrite->get_extra_permastruct( $taxonomy ) ) {
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return str_replace( "/{$term->slug}", '/' . str_replace( 'post-format-', '', $term->slug ), $link );
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} else {
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$link = remove_query_arg( 'post_format', $link );
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return add_query_arg( 'post_format', str_replace( 'post-format-', '', $term->slug ), $link );
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}
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}
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add_filter( 'term_link', '_post_format_link', 10, 3 );
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/**
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* Remove the post format prefix from the name property of the term object created by get_term().
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*
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* @access private
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* @since 3.1.0
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*/
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function _post_format_get_term( $term ) {
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if ( isset( $term->slug ) ) {
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$term->name = get_post_format_string( str_replace( 'post-format-', '', $term->slug ) );
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}
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return $term;
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}
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add_filter( 'get_post_format', '_post_format_get_term' );
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/**
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* Remove the post format prefix from the name property of the term objects created by get_terms().
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*
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* @access private
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* @since 3.1.0
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*/
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function _post_format_get_terms( $terms, $taxonomies, $args ) {
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if ( in_array( 'post_format', (array) $taxonomies ) ) {
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if ( isset( $args['fields'] ) && 'names' == $args['fields'] ) {
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foreach( $terms as $order => $name ) {
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$terms[$order] = get_post_format_string( str_replace( 'post-format-', '', $name ) );
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}
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} else {
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foreach ( (array) $terms as $order => $term ) {
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if ( isset( $term->taxonomy ) && 'post_format' == $term->taxonomy ) {
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$terms[$order]->name = get_post_format_string( str_replace( 'post-format-', '', $term->slug ) );
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}
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}
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}
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}
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return $terms;
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}
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add_filter( 'get_terms', '_post_format_get_terms', 10, 3 );
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/**
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* Remove the post format prefix from the name property of the term objects created by wp_get_object_terms().
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*
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* @access private
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* @since 3.1.0
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*/
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function _post_format_wp_get_object_terms( $terms ) {
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foreach ( (array) $terms as $order => $term ) {
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if ( isset( $term->taxonomy ) && 'post_format' == $term->taxonomy ) {
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$terms[$order]->name = get_post_format_string( str_replace( 'post-format-', '', $term->slug ) );
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}
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}
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return $terms;
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}
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add_filter( 'wp_get_object_terms', '_post_format_wp_get_object_terms' );
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/**
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* Return the class for a post format content wrapper
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*
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* @since 3.6.0
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*
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* @param string $format
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*/
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function get_post_format_content_class( $format ) {
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return apply_filters( 'post_format_content_class', 'post-format-content', $format );
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}
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/**
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* Ouput the class for a post format content wrapper
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*
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* @since 3.6.0
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*
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* @param string $format
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*/
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function post_format_content_class( $format ) {
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echo get_post_format_content_class( $format );
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}
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/**
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* Provide fallback behavior for Posts that have associated post format
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*
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* @since 3.6.0
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*
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* @param string $content
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*/
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function post_formats_compat( $content, $id = 0 ) {
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$post = empty( $id ) ? get_post() : get_post( $id );
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if ( empty( $post ) )
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return $content;
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$format = get_post_format( $post );
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if ( empty( $format ) || in_array( $format, array( 'status', 'aside', 'chat' ) ) )
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return $content;
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if ( current_theme_supports( 'structured-post-formats', $format ) )
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return $content;
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$defaults = array(
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'position' => 'after',
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'tag' => 'div',
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'class' => get_post_format_content_class( $format ),
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'link_class' => '',
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);
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$args = apply_filters( 'post_format_compat', array() );
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$compat = wp_parse_args( $args, $defaults );
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$show_content = true;
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$format_output = '';
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$meta = get_post_format_meta( $post->ID );
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// passed by ref in preg_match()
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$matches = array();
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switch ( $format ) {
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case 'link':
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$compat['tag'] = '';
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$compat['position'] = 'before';
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if ( ! empty( $meta['url'] ) ) {
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$esc_url = preg_quote( $meta['url'], '#' );
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// Make sure the same URL isn't in the post (modified/extended versions allowed)
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if ( ! preg_match( '#' . $esc_url . '[^/&\?]?#', $content ) ) {
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$url = $meta['url'];
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} else {
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$url = get_content_url( $content, true );
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}
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} else {
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$content_before = $content;
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$url = get_content_url( $content, true );
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if ( $content_before == $content )
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$url = '';
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}
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if ( ! empty( $url ) ) {
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$format_output .= sprintf(
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'<a %shref="%s">%s</a>',
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empty( $compat['link_class'] ) ? '' : sprintf( 'class="%s" ', esc_attr( $compat['link_class'] ) ),
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esc_url( $url ),
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empty( $post->post_title ) ? esc_url( $meta['url'] ) : apply_filters( 'the_title', $post->post_title )
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);
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}
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break;
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case 'quote':
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if ( ! empty( $meta['quote'] ) && ! stristr( $content, $meta['quote'] ) ) {
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$format_output .= sprintf( '<blockquote>%s</blockquote>', $meta['quote'] );
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if ( ! empty( $meta['quote_source'] ) ) {
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$format_output .= sprintf(
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'<cite>%s</cite>',
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! empty( $meta['url'] ) ?
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sprintf( '<a href="%s">%s</a>', esc_url( $meta['url'] ), $meta['quote_source'] ) :
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$meta['quote_source']
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);
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}
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}
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break;
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case 'video':
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case 'audio':
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if ( ! has_shortcode( $post->post_content, $format ) && ! empty( $meta['media'] ) ) {
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// the metadata is a shortcode or an embed code
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if ( preg_match( '/' . get_shortcode_regex() . '/s', $meta['media'] ) || preg_match( '#<[^>]+>#', $meta['media'] ) ) {
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$format_output .= $meta['media'];
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} elseif ( ! stristr( $content, $meta['media'] ) ) {
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// attempt to embed the URL
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$format_output .= sprintf( '[embed]%s[/embed]', $meta['media'] );
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}
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}
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break;
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default:
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return $content;
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break;
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}
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if ( empty( $format_output ) )
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return $content;
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$output = '';
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if ( ! empty( $content ) && $show_content && 'before' !== $compat['position'] )
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$output .= $content . "\n\n";
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if ( ! empty( $compat['tag'] ) )
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$output .= sprintf( '<%s class="%s">', tag_escape( $compat['tag'] ), esc_attr( $compat['class'] ) );
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$output .= "\n\n" . $format_output;
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if ( ! empty( $compat['tag'] ) )
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$output .= sprintf( '</%s>', tag_escape( $compat['tag'] ) );
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if ( ! empty( $content ) && $show_content && 'before' === $compat['position'] )
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$output .= "\n\n" . $content;
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return $output;
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}
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/**
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* Add chat detection support to the `get_content_chat()` chat parser
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*
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* @since 3.6.0
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*
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* @global array $_wp_chat_parsers
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* @param string $name Unique identifier for chat format. Example: IRC
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* @param string $newline_regex RegEx to match the start of a new line, typically when a new "username:" appears
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* The parser will handle up to 3 matched expressions
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* $matches[0] = the string before the user's message starts
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* $matches[1] = the time of the message, if present
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* $matches[2] = the author/username
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* OR
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* $matches[0] = the string before the user's message starts
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* $matches[1] = the author/username
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* @param string $delimiter_regex RegEx to determine where to split the username syntax from the chat message
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*/
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function add_chat_detection_format( $name, $newline_regex, $delimiter_regex ) {
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global $_wp_chat_parsers;
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if ( empty( $_wp_chat_parsers ) )
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$_wp_chat_parsers = array();
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$_wp_chat_parsers = array( $name => array( $newline_regex, $delimiter_regex ) ) + $_wp_chat_parsers;
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}
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add_chat_detection_format( 'IM', '#^([^:]+):#', '#[:]#' );
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add_chat_detection_format( 'Skype', '#^(\[.+?\])\s([^:]+):#', '#[:]#' );
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/**
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* Deliberately interpret passed content as a chat transcript that is optionally
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* followed by commentary
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*
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* If the content does not contain username syntax, assume that it does not contain
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* chat logs and return
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*
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* @since 3.6.0
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*
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* Example:
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*
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* One stanza of chat:
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* Scott: Hey, let's chat!
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* Helen: No.
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*
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* $stanzas = array(
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* array(
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* array(
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* 'time' => '',
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* 'author' => 'Scott',
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* 'messsage' => "Hey, let's chat!"
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* ),
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* array(
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* 'time' => '',
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* 'author' => 'Helen',
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* 'message' => 'No.'
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* )
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* )
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* )
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* @param string $content A string which might contain chat data.
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* @param boolean $remove Whether to remove the found data from the passed content.
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* @return array A chat log as structured data
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*/
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function get_content_chat( &$content, $remove = false ) {
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global $_wp_chat_parsers;
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$trimmed = trim( $content );
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if ( empty( $trimmed ) )
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return array();
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$has_match = false;
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$matched_parser = false;
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foreach ( $_wp_chat_parsers as $parser ) {
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@list( $newline_regex ) = $parser;
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if ( preg_match( $newline_regex, $trimmed ) ) {
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$has_match = true;
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$matched_parser = $parser;
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break;
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}
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}
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if ( false === $matched_parser )
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return array();
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@list( $newline_regex, $delimiter_regex ) = $parser;
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$last_index = 0;
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$stanzas = array();
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$lines = explode( "\n", make_clickable( $trimmed ) );
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$author = $time = '';
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$data = array();
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$stanza = array();
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foreach ( $lines as $index => $line ) {
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$line = trim( $line );
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if ( empty( $line ) ) {
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if ( ! empty( $author ) ) {
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$stanza[] = array(
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'time' => $time,
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'author' => $author,
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'message' => join( ' ', $data )
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);
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}
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$stanzas[] = $stanza;
|
|
$last_index = $index;
|
|
$stanza = array();
|
|
$author = $time = '';
|
|
$data = array();
|
|
if ( ! empty( $lines[$index + 1] ) && ! preg_match( $delimiter_regex, $lines[$index + 1] ) )
|
|
break;
|
|
}
|
|
|
|
$matches = array();
|
|
$matched = preg_match( $newline_regex, $line, $matches );
|
|
$author_match = empty( $matches[2] ) ? $matches[1] : $matches[2];
|
|
// assume username syntax if no whitespace is present
|
|
$no_ws = $matched && ! preg_match( '#\s#', $author_match );
|
|
// allow script-like stanzas
|
|
$has_ws = $matched && preg_match( '#\s#', $author_match ) && empty( $lines[$index + 1] ) && empty( $lines[$index - 1] );
|
|
if ( $matched && ( ! empty( $matches[2] ) || ( $no_ws || $has_ws ) ) ) {
|
|
if ( ! empty( $author ) ) {
|
|
$stanza[] = array(
|
|
'time' => $time,
|
|
'author' => $author,
|
|
'message' => join( ' ', $data )
|
|
);
|
|
$data = array();
|
|
}
|
|
|
|
$time = empty( $matches[2] ) ? '' : $matches[1];
|
|
$author = $author_match;
|
|
$data[] = trim( str_replace( $matches[0], '', $line ) );
|
|
} elseif ( preg_match( '#\S#', $line ) ) {
|
|
$data[] = $line;
|
|
}
|
|
}
|
|
|
|
if ( ! empty( $author ) ) {
|
|
$stanza[] = array(
|
|
'time' => $time,
|
|
'author' => $author,
|
|
'message' => trim( join( ' ', $data ) )
|
|
);
|
|
}
|
|
|
|
if ( ! empty( $stanza ) )
|
|
$stanzas[] = $stanza;
|
|
|
|
if ( $remove )
|
|
$content = trim( join( "\n", array_slice( $lines, $last_index ) ) );
|
|
|
|
return $stanzas;
|
|
}
|
|
|
|
/**
|
|
* Retrieve structured chat data from the current or passed post
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @param int $id Optional. Post ID
|
|
* @return array
|
|
*/
|
|
function get_the_chat( $id = 0 ) {
|
|
$post = empty( $id ) ? clone get_post() : get_post( $id );
|
|
if ( empty( $post ) )
|
|
return array();
|
|
|
|
$data = get_content_chat( get_paged_content( $post->post_content ) );
|
|
if ( empty( $data ) )
|
|
return array();
|
|
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Output HTML for a given chat's structured data. Themes can use this as a
|
|
* template tag in place of the_content() for Chat post format templates.
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @uses get_the_chat()
|
|
*
|
|
* @print HTML
|
|
*/
|
|
function the_chat() {
|
|
$output = '<dl class="chat-transcript">';
|
|
|
|
$stanzas = get_the_chat();
|
|
|
|
foreach ( $stanzas as $stanza ) {
|
|
foreach ( $stanza as $row ) {
|
|
$time = '';
|
|
if ( ! empty( $row['time'] ) )
|
|
$time = sprintf( '<time>%s</time>', esc_html( $row['time'] ) );
|
|
|
|
$output .= sprintf(
|
|
'<dt class="chat-author chat-author-%1$s vcard">%2$s <cite class="fn">%3$s</cite>: </dt>
|
|
<dd class="chat-text">%4$s</dd>
|
|
',
|
|
esc_attr( strtolower( $row['author'] ) ), // Slug.
|
|
$time,
|
|
esc_html( $row['author'] ),
|
|
esc_html( $row['message'] )
|
|
);
|
|
}
|
|
}
|
|
|
|
$output .= '</dl><!-- .chat-transcript -->';
|
|
|
|
echo $output;
|
|
}
|
|
|
|
/**
|
|
* Extract a URL from passed content, if possible
|
|
* Checks for a URL on the first line of the content or the first encountered href attribute.
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @param string $content A string which might contain a URL.
|
|
* @param boolean $remove Whether to remove the found URL from the passed content.
|
|
* @return string The found URL.
|
|
*/
|
|
function get_content_url( &$content, $remove = false ) {
|
|
if ( empty( $content ) )
|
|
return '';
|
|
|
|
$matches = array();
|
|
|
|
// the content is a URL
|
|
$trimmed = trim( $content );
|
|
if ( 0 === stripos( $trimmed, 'http' ) && ! preg_match( '#\s#', $trimmed ) ) {
|
|
if ( $remove )
|
|
$content = '';
|
|
|
|
return $trimmed;
|
|
// the content is HTML so we grab the first href
|
|
} elseif ( preg_match( '/<a\s[^>]*?href=[\'"](.+?)[\'"]/is', $content, $matches ) ) {
|
|
return esc_url_raw( $matches[1] );
|
|
}
|
|
|
|
$lines = explode( "\n", $trimmed );
|
|
$line = trim( array_shift( $lines ) );
|
|
|
|
// the content is a URL followed by content
|
|
if ( 0 === stripos( $line, 'http' ) ) {
|
|
if ( $remove )
|
|
$content = trim( join( "\n", $lines ) );
|
|
|
|
return esc_url_raw( $line );
|
|
}
|
|
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Attempt to retrieve a URL from a post's content
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @param int $id Optional. Post ID.
|
|
* @return string A URL, if found.
|
|
*/
|
|
function get_the_url( $id = 0 ) {
|
|
$post = empty( $id ) ? get_post() : get_post( $id );
|
|
if ( empty( $post ) )
|
|
return '';
|
|
|
|
if ( in_array( get_post_format( $post->ID ), array( 'link', 'quote' ) ) ) {
|
|
$meta = get_post_format_meta( $post->ID );
|
|
if ( ! empty( $meta['url'] ) )
|
|
return apply_filters( 'get_the_url', esc_url_raw( $meta['url'] ), $post );
|
|
}
|
|
|
|
if ( ! empty( $post->post_content ) )
|
|
return apply_filters( 'get_the_url', get_content_url( $post->post_content ), $post );
|
|
}
|
|
|
|
/**
|
|
* Attempt to output a URL from a post's content
|
|
*
|
|
* @since 3.6.0
|
|
*.
|
|
*/
|
|
function the_url() {
|
|
echo esc_url( get_the_url() );
|
|
}
|