63 lines
1.6 KiB
PHP
63 lines
1.6 KiB
PHP
<?php
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namespace Activitypub;
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/**
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* ActivityPub Hashtag Class
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*
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* @author Matthias Pfefferle
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*/
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class Hashtag {
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/**
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* Initialize the class, registering WordPress hooks
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*/
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public static function init() {
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add_filter( 'wp_insert_post', array( '\Activitypub\Hashtag', 'insert_post' ), 99, 2 );
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add_filter( 'the_content', array( '\Activitypub\Hashtag', 'the_content' ), 99, 2 );
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}
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/**
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* Filter to save #tags as real WordPress tags
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*
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* @param int $id the rev-id
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* @param array $data the post-data as array
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*/
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public static function insert_post( $id, $data ) {
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if ( preg_match_all( '/' . ACTIVITYPUB_HASHTAGS_REGEXP . '/i', $data->post_content, $match ) ) {
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$tags = implode( ', ', $match[2] );
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wp_add_post_tags( $data->post_parent, $tags );
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}
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return $id;
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}
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/**
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* Filter to replace the #tags in the content with links
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*
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* @param string $the_content the post-content
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*/
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public static function the_content( $the_content ) {
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$the_content = preg_replace_callback( '/' . ACTIVITYPUB_HASHTAGS_REGEXP . '/i', array( '\Activitypub\Hashtag', 'replace_with_links' ), $the_content );
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return $the_content;
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}
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/**
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* A callback for preg_replace to build the term links
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*
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* @param array $result the preg_match results
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* @return string the final string
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*/
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public static function replace_with_links( $result ) {
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$tag = $result[2];
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$space = $result[1];
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$tag_object = get_term_by( 'name', $result[2], 'post_tag' );
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if ( $tag_object ) {
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$link = get_term_link( $tag_object, 'post_tag' );
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return "$space<a href='$link' rel='tag'>#$tag</a>";
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}
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return $space . '#' . $tag;
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}
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}
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