1020 lines
29 KiB
PHP
1020 lines
29 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 Post ID or post object. Optional, default is the current post from the loop.
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* @return mixed The format if successful. False otherwise.
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*/
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function get_post_format( $post = null ) {
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if ( ! $post = get_post( $post ) )
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return false;
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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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*
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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|int $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( $format, get_post_format_slugs() ) )
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$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 (optional) The post ID.
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* @return array The array of post format metadata.
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*/
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function get_post_format_meta( $post_id = 0 ) {
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$meta = get_post_meta( $post_id );
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$keys = array( 'quote', 'quote_source_name', 'quote_source_url', 'link_url', 'gallery', 'audio_embed', 'video_embed', 'url', 'image' );
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if ( empty( $meta ) )
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return array_fill_keys( $keys, '' );
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$upgrade = array(
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'_wp_format_quote_source' => 'quote_source_name',
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'_wp_format_audio' => 'audio_embed',
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'_wp_format_video' => 'video_embed'
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);
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$format = get_post_format( $post_id );
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if ( ! empty( $format ) ) {
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switch ( $format ) {
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case 'link':
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$upgrade['_wp_format_url'] = 'link_url';
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break;
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case 'quote':
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$upgrade['_wp_format_url'] = 'quote_source_url';
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break;
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}
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}
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$upgrade_keys = array_keys( $upgrade );
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foreach ( $meta as $key => $values ) {
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if ( ! in_array( $key, $upgrade_keys ) )
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continue;
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update_post_meta( $post_id, '_format_' . $upgrade[$key], reset( $values ) );
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delete_post_meta( $post_id, $key );
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}
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$values = array();
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foreach ( $keys as $key ) {
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$value = get_post_meta( $post_id, '_format_' . $key, true );
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$values[$key] = empty( $value ) ? '' : $value;
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}
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return apply_filters( 'post_format_meta', $values );
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}
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/**
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* Returns an array of post format slugs to their translated and pretty display versions
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*
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* @since 3.1.0
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*
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* @return array The array of translated post format names.
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*/
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function get_post_format_strings() {
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$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 $strings;
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}
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/**
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* Retrieves an array of post format slugs.
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*
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* @since 3.1.0
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*
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* @uses get_post_format_strings()
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*
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* @return array The array of post format slugs.
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*/
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function get_post_format_slugs() {
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$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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* @uses get_post_format_strings()
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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 The post format slug.
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* @return string The post format term 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 The post format slug, such as status, quote, image, gallery, etc.
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* @return string Filtered post format content class.
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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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* Output 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 The post format slug, such as status, quote, image, gallery, etc.
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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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* @uses get_post_format_meta()
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*
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* @param string $content The post content.
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* @param int $id (optional) The post ID.
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* @return string Formatted output based on associated post format.
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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', 'gallery' ) ) )
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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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switch ( $format ) {
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case 'link':
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if ( ! empty( $meta['link_url'] ) ) {
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$esc_url = preg_quote( $meta['link_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 = $meta['link_url'];
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} else {
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$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['link_url'] ) : apply_filters( 'the_title', $post->post_title, $post->ID )
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);
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}
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break;
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case 'image':
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if ( ! empty( $meta['image'] ) ) {
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if ( has_shortcode( $meta['image'], 'caption' ) ) {
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// wrap <img> in <a>
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if ( ! empty( $meta['url'] ) && false === strpos( $meta['image'], '<a ' ) ) {
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$meta['image'] = preg_replace(
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'#(<img[^>]+>)#',
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sprintf( '<a href="%s">$1</a>', esc_url( $meta['url'] ) ),
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$meta['image']
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);
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}
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$format_output .= do_shortcode( $meta['image'] );
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} else {
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if ( is_numeric( $meta['image'] ) ) {
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$image = wp_get_attachment_image( absint( $meta['image'] ), 'full' );
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} elseif ( ! preg_match( '#<[^>]+>#', $meta['image'] ) ) {
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// not HTML, assume URL
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$image = sprintf(
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'<img %ssrc="%s" alt="" />',
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empty( $compat['image_class'] ) ? '' : sprintf( 'class="%s" ', esc_attr( $compat['image_class'] ) ),
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esc_url( $meta['image'] )
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);
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} else {
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// assume HTML
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$image = $meta['image'];
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}
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if ( ! empty( $meta['url'] ) && false === strpos( $image, '<a ' ) ) {
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$format_output .= sprintf(
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'<a href="%s">%s</a>',
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esc_url( $meta['url'] ),
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$image
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);
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} else {
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$format_output .= $image;
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}
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}
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}
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break;
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case 'quote':
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$quote = get_the_post_format_quote( $post );
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// Replace the existing quote in-place.
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if ( ! empty( $quote ) )
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get_content_quote( $content, true, $quote );
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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( $meta[$format . '_embed'] ) ) {
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$value = $meta[$format . '_embed'];
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// the metadata is an attachment ID
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if ( is_numeric( $value ) ) {
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$url = wp_get_attachment_url( $value );
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$format_output .= sprintf( '[%s src="%s"]', $format, $url );
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// the metadata is a shortcode or an embed code
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} elseif ( preg_match( '/' . get_shortcode_regex() . '/s', $value ) || preg_match( '#<[^>]+>#', $value ) ) {
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$format_output .= $value;
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} elseif ( ! stristr( $content, $value ) ) {
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// attempt to embed the URL
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$format_output .= sprintf( '[embed]%s[/embed]', $value );
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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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|
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if ( empty( $format_output ) )
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return $content;
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|
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$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.
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @global array $_wp_chat_parsers
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*
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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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*/
|
|
function add_chat_detection_format( $name, $newline_regex, $delimiter_regex ) {
|
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global $_wp_chat_parsers;
|
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|
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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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}
|
|
add_chat_detection_format( 'IM', '#^([^:]+):#', '#[:]#' );
|
|
add_chat_detection_format( 'Skype', '#(\[.+?\])\s([^:]+):#', '#[:]#' );
|
|
|
|
/**
|
|
* Deliberately interpret passed content as a chat transcript that is optionally
|
|
* followed by commentary
|
|
*
|
|
* If the content does not contain username syntax, assume that it does not contain
|
|
* chat logs and return
|
|
*
|
|
* Example:
|
|
*
|
|
* One stanza of chat:
|
|
* Scott: Hey, let's chat!
|
|
* Helen: No.
|
|
*
|
|
* $stanzas = array(
|
|
* array(
|
|
* array(
|
|
* 'time' => '',
|
|
* 'author' => 'Scott',
|
|
* 'messsage' => "Hey, let's chat!"
|
|
* ),
|
|
* array(
|
|
* 'time' => '',
|
|
* 'author' => 'Helen',
|
|
* 'message' => 'No.'
|
|
* )
|
|
* )
|
|
* )
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @param string $content A string which might contain chat data, passed by reference.
|
|
* @param boolean $remove Whether to remove the found data from the passed content.
|
|
* @return array A chat log as structured data
|
|
*/
|
|
function get_content_chat( &$content, $remove = false ) {
|
|
global $_wp_chat_parsers;
|
|
|
|
$trimmed = strip_tags( trim( $content ) );
|
|
if ( empty( $trimmed ) )
|
|
return array();
|
|
|
|
$matched_parser = false;
|
|
foreach ( $_wp_chat_parsers as $parser ) {
|
|
@list( $newline_regex, $delimiter_regex ) = $parser;
|
|
if ( preg_match( $newline_regex, $trimmed ) ) {
|
|
$matched_parser = $parser;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( false === $matched_parser )
|
|
return array();
|
|
|
|
$last_index = 0;
|
|
$stanzas = $data = $stanza = array();
|
|
$author = $time = '';
|
|
$lines = explode( "\n", make_clickable( $trimmed ) );
|
|
$found = false;
|
|
$found_index = 0;
|
|
|
|
foreach ( $lines as $index => $line ) {
|
|
if ( ! $found )
|
|
$found_index = $index;
|
|
|
|
$line = trim( $line );
|
|
|
|
if ( empty( $line ) && $found ) {
|
|
if ( ! empty( $author ) ) {
|
|
$stanza[] = array(
|
|
'time' => $time,
|
|
'author' => $author,
|
|
'message' => join( ' ', $data )
|
|
);
|
|
}
|
|
|
|
$stanzas[] = $stanza;
|
|
|
|
$stanza = $data = array();
|
|
$author = $time = '';
|
|
if ( ! empty( $lines[$index + 1] ) && ! preg_match( $delimiter_regex, $lines[$index + 1] ) )
|
|
break;
|
|
else
|
|
continue;
|
|
}
|
|
|
|
$matched = preg_match( $newline_regex, $line, $matches );
|
|
if ( ! $matched )
|
|
continue;
|
|
|
|
$found = true;
|
|
$last_index = $index;
|
|
$author_match = empty( $matches[2] ) ? $matches[1] : $matches[2];
|
|
// assume username syntax if no whitespace is present
|
|
$no_ws = $matched && ! preg_match( '#[\r\n\t ]#', $author_match );
|
|
// allow script-like stanzas
|
|
$has_ws = $matched && preg_match( '#[\r\n\t ]#', $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 ) {
|
|
if ( 0 === $found_index ) {
|
|
$removed = array_slice( $lines, $last_index );
|
|
} else {
|
|
$before = array_slice( $lines, 0, $found_index );
|
|
$after = array_slice( $lines, $last_index + 1 );
|
|
$removed = array_filter( array_merge( $before, $after ) );
|
|
}
|
|
$content = trim( join( "\n", $removed ) );
|
|
}
|
|
|
|
return $stanzas;
|
|
}
|
|
|
|
/**
|
|
* Retrieve structured chat data from the current or passed post
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @param int $id (optional) The post ID.
|
|
* @return array The chat content.
|
|
*/
|
|
function get_the_post_format_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_post_format_chat()
|
|
*
|
|
* @print HTML
|
|
*/
|
|
function the_post_format_chat() {
|
|
$output = '<dl class="chat">';
|
|
$stanzas = get_the_post_format_chat();
|
|
|
|
foreach ( $stanzas as $stanza ) {
|
|
foreach ( $stanza as $row ) {
|
|
$time = '';
|
|
if ( ! empty( $row['time'] ) )
|
|
$time = sprintf( '<time class="chat-timestamp">%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( sanitize_title_with_dashes( $row['author'] ) ), // Slug.
|
|
$time,
|
|
esc_html( $row['author'] ),
|
|
$row['message']
|
|
);
|
|
}
|
|
}
|
|
|
|
$output .= '</dl><!-- .chat -->';
|
|
|
|
echo $output;
|
|
}
|
|
|
|
/**
|
|
* Get the first <blockquote> from the $content string passed by reference.
|
|
*
|
|
* If $content does not have a blockquote, assume the whole string
|
|
* is the quote.
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @param string $content A string which might contain chat data, passed by reference.
|
|
* @param bool $remove (optional) Whether to remove the quote from the content.
|
|
* @param string $replace (optional) Content to replace the quote content with.
|
|
* @return string The quote content.
|
|
*/
|
|
function get_content_quote( &$content, $remove = false, $replace = '' ) {
|
|
if ( empty( $content ) )
|
|
return '';
|
|
|
|
if ( ! preg_match( '/<blockquote[^>]*>(.+?)<\/blockquote>/is', $content, $matches ) ) {
|
|
$quote = $content;
|
|
if ( $remove || ! empty( $replace ) )
|
|
$content = $replace;
|
|
return $quote;
|
|
}
|
|
|
|
if ( $remove || ! empty( $replace ) )
|
|
$content = preg_replace( '/<blockquote[^>]*>(.+?)<\/blockquote>/is', addcslashes( $replace, '\\$' ), $content, 1 );
|
|
|
|
return $matches[1];
|
|
}
|
|
|
|
/**
|
|
* Get a quote from the post content and set split_content for future use.
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @uses get_content_quote()
|
|
* @uses apply_filters() Calls 'quote_source_format' filter to allow changing the typographical mark added to the quote source (em-dash prefix, by default)
|
|
*
|
|
* @param object $post (optional) A reference to the post object, falls back to get_post().
|
|
* @return string The quote html.
|
|
*/
|
|
function get_the_post_format_quote( &$post = null ) {
|
|
if ( empty( $post ) )
|
|
$post = get_post();
|
|
|
|
if ( empty( $post ) )
|
|
return '';
|
|
|
|
$content = $post->post_content;
|
|
$quote = get_content_quote( $content, true );
|
|
$post->split_content = $content;
|
|
|
|
if ( ! empty( $quote ) )
|
|
$quote = sprintf( '<blockquote>%s</blockquote>', wpautop( $quote ) );
|
|
|
|
$meta = get_post_format_meta( $post->ID );
|
|
|
|
if ( ! empty( $meta['quote_source_name'] ) ) {
|
|
$source = ( empty( $meta['quote_source_url'] ) ) ? $meta['quote_source_name'] : sprintf( '<a href="%s">%s</a>', esc_url( $meta['quote_source_url'] ), $meta['quote_source_name'] );
|
|
$source = sprintf( apply_filters( 'quote_source_format', __( '— %s' ) ), $source );
|
|
$quote .= sprintf( '<figcaption class="quote-caption">%s</figcaption>', $source );
|
|
}
|
|
|
|
if ( ! empty( $quote ) )
|
|
$quote = sprintf( '<figure class="quote">%s</figure>', $quote );
|
|
|
|
return $quote;
|
|
}
|
|
|
|
/**
|
|
* Outputs the post format quote.
|
|
*
|
|
* @since 3.6.0
|
|
*/
|
|
function the_post_format_quote() {
|
|
echo get_the_post_format_quote();
|
|
}
|
|
|
|
/**
|
|
* 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, passed by reference.
|
|
* @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 '';
|
|
|
|
// 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=([\'"])(.+?)\1/is', $content, $matches ) ) {
|
|
return esc_url_raw( $matches[2] );
|
|
}
|
|
|
|
$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) The post ID.
|
|
* @return string A URL, if found.
|
|
*/
|
|
function get_the_post_format_url( $id = 0 ) {
|
|
$post = empty( $id ) ? get_post() : get_post( $id );
|
|
if ( empty( $post ) )
|
|
return '';
|
|
|
|
$format = get_post_format( $post->ID );
|
|
if ( in_array( $format, array( 'image', 'link', 'quote' ) ) ) {
|
|
$meta = get_post_format_meta( $post->ID );
|
|
$meta_link = '';
|
|
|
|
switch ( $format ) {
|
|
case 'link':
|
|
if ( ! empty( $meta['link_url'] ) )
|
|
$meta_link = $meta['link_url'];
|
|
break;
|
|
case 'image':
|
|
if ( ! empty( $meta['url'] ) )
|
|
$meta_link = $meta['url'];
|
|
break;
|
|
case 'quote':
|
|
if ( ! empty( $meta['quote_source_url'] ) )
|
|
$meta_link = $meta['quote_source_url'];
|
|
break;
|
|
}
|
|
|
|
if ( ! empty( $meta_link ) )
|
|
return apply_filters( 'get_the_post_format_url', esc_url_raw( $meta_link ), $post );
|
|
}
|
|
|
|
if ( ! empty( $post->post_content ) )
|
|
return apply_filters( 'get_the_post_format_url', get_content_url( $post->post_content ), $post );
|
|
}
|
|
|
|
/**
|
|
* Attempt to output a URL from a post's content
|
|
*
|
|
* @since 3.6.0
|
|
*.
|
|
*/
|
|
function the_post_format_url() {
|
|
echo esc_url( get_the_post_format_url() );
|
|
}
|
|
|
|
/**
|
|
* Retrieve the post content, minus the extracted post format content
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @internal there is a lot of code that could be abstracted from get_the_content()
|
|
*
|
|
* @param string $more_link_text Optional. Content for when there is more text.
|
|
* @param bool $strip_teaser Optional. Strip teaser content before the more text. Default is false.
|
|
* @return string The content minus the extracted post format content.
|
|
*/
|
|
function get_the_remaining_content( $more_link_text = null, $strip_teaser = false ) {
|
|
global $more, $page, $format_pages, $multipage, $preview;
|
|
|
|
$post = get_post();
|
|
|
|
if ( null === $more_link_text )
|
|
$more_link_text = __( '(more…)' );
|
|
|
|
$output = '';
|
|
$has_teaser = false;
|
|
|
|
// If post password required and it doesn't match the cookie.
|
|
if ( post_password_required() )
|
|
return get_the_password_form();
|
|
|
|
if ( $page > count( $format_pages ) ) // if the requested page doesn't exist
|
|
$page = count( $format_pages ); // give them the highest numbered page that DOES exist
|
|
|
|
$content = $format_pages[$page-1];
|
|
if ( preg_match( '/<!--more(.*?)?-->/', $content, $matches ) ) {
|
|
$content = explode( $matches[0], $content, 2 );
|
|
if ( ! empty( $matches[1] ) && ! empty( $more_link_text ) )
|
|
$more_link_text = strip_tags( wp_kses_no_null( trim( $matches[1] ) ) );
|
|
|
|
$has_teaser = true;
|
|
} else {
|
|
$content = array( $content );
|
|
}
|
|
|
|
if ( false !== strpos( $post->post_content, '<!--noteaser-->' ) && ( ! $multipage || $page == 1 ) )
|
|
$strip_teaser = true;
|
|
|
|
$teaser = $content[0];
|
|
|
|
if ( $more && $strip_teaser && $has_teaser )
|
|
$teaser = '';
|
|
|
|
$output .= $teaser;
|
|
|
|
if ( count( $content ) > 1 ) {
|
|
if ( $more ) {
|
|
$output .= '<span id="more-' . $post->ID . '"></span>' . $content[1];
|
|
} else {
|
|
if ( ! empty( $more_link_text ) )
|
|
$output .= apply_filters( 'the_content_more_link', ' <a href="' . get_permalink() . "#more-{$post->ID}\" class=\"more-link\">$more_link_text</a>", $more_link_text );
|
|
|
|
$output = force_balance_tags( $output );
|
|
}
|
|
}
|
|
|
|
if ( $preview ) // preview fix for javascript bug with foreign languages
|
|
$output = preg_replace_callback( '/\%u([0-9A-F]{4})/', '_convert_urlencoded_to_entities', $output );
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Display the post content minus the parsed post format data.
|
|
*
|
|
* @since 3.6.0
|
|
*
|
|
* @param string $more_link_text Optional. Content for when there is more text.
|
|
* @param bool $strip_teaser Optional. Strip teaser content before the more text. Default is false.
|
|
*/
|
|
function the_remaining_content( $more_link_text = null, $strip_teaser = false ) {
|
|
$extra = get_the_remaining_content( $more_link_text, $strip_teaser );
|
|
|
|
remove_filter( 'the_content', 'post_formats_compat', 7 );
|
|
$content = apply_filters( 'the_content', $extra );
|
|
add_filter( 'the_content', 'post_formats_compat', 7 );
|
|
|
|
echo str_replace( ']]>', ']]>', $content );
|
|
}
|
|
|
|
/**
|
|
* Don't display post titles for asides and status posts on the front end.
|
|
*
|
|
* @since 3.6.0
|
|
* @access private
|
|
*/
|
|
function _post_formats_title( $title, $post_id = 0 ) {
|
|
if ( ! $post_id || is_admin() || is_feed() || ! in_array( get_post_format( $post_id ), array( 'aside', 'status' ) ) )
|
|
return $title;
|
|
|
|
// Return an empty string only if the title is auto-generated.
|
|
$post = get_post( $post_id );
|
|
if ( $title == _post_formats_generate_title( $post->post_content, get_post_format( $post_id ) ) )
|
|
$title = '';
|
|
|
|
return $title;
|
|
}
|
|
|
|
/**
|
|
* Generate a title from the post content or format.
|
|
*
|
|
* @since 3.6.0
|
|
* @access private
|
|
*/
|
|
function _post_formats_generate_title( $content, $post_format = '' ) {
|
|
$title = wp_trim_words( strip_shortcodes( $content ), 8, '' );
|
|
|
|
if ( empty( $title ) )
|
|
$title = get_post_format_string( $post_format );
|
|
|
|
return $title;
|
|
}
|
|
|
|
/**
|
|
* Fixes empty titles for aside and status formats.
|
|
*
|
|
* Passes a generated post title to the 'wp_insert_post_data' filter.
|
|
*
|
|
* @since 3.6.0
|
|
* @access private
|
|
*
|
|
* @uses _post_formats_generate_title()
|
|
*/
|
|
function _post_formats_fix_empty_title( $data, $postarr ) {
|
|
if ( 'auto-draft' == $data['post_status'] || ! post_type_supports( $data['post_type'], 'post-formats' ) )
|
|
return $data;
|
|
|
|
$post_id = ( isset( $postarr['ID'] ) ) ? absint( $postarr['ID'] ) : 0;
|
|
$post_format = '';
|
|
|
|
if ( $post_id )
|
|
$post_format = get_post_format( $post_id );
|
|
|
|
if ( isset( $postarr['post_format'] ) )
|
|
$post_format = ( in_array( $postarr['post_format'], get_post_format_slugs() ) ) ? $postarr['post_format'] : '';
|
|
|
|
if ( ! in_array( $post_format, array( 'aside', 'status' ) ) )
|
|
return $data;
|
|
|
|
if ( $data['post_title'] == _post_formats_generate_title( $data['post_content'], $post_format ) )
|
|
return $data;
|
|
|
|
// If updating an existing post, check whether the title was auto-generated.
|
|
if ( $post_id && $post = get_post( $post_id ) )
|
|
if ( $post->post_title == $data['post_title'] && $post->post_title == _post_formats_generate_title( $post->post_content, get_post_format( $post->ID ) ) )
|
|
$data['post_title'] = '';
|
|
|
|
if ( empty( $data['post_title'] ) )
|
|
$data['post_title'] = _post_formats_generate_title( $data['post_content'], $post_format );
|
|
|
|
return $data;
|
|
}
|