585 lines
14 KiB
PHP
585 lines
14 KiB
PHP
<?php
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namespace Activitypub;
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use function Activitypub\esc_hashtag;
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class Shortcodes {
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/**
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* Register the shortcodes
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*/
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public static function register() {
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foreach ( get_class_methods( self::class ) as $shortcode ) {
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if ( 'init' !== $shortcode ) {
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add_shortcode( 'ap_' . $shortcode, array( self::class, $shortcode ) );
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}
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}
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}
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/**
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* Unregister the shortcodes
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*/
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public static function unregister() {
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foreach ( get_class_methods( self::class ) as $shortcode ) {
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if ( 'init' !== $shortcode ) {
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remove_shortcode( 'ap_' . $shortcode );
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}
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}
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}
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/**
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* Generates output for the 'ap_hashtags' shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post tags as hashtags.
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*/
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public static function hashtags( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$tags = \get_the_tags( $item->ID );
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if ( ! $tags ) {
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return '';
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}
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$hash_tags = array();
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foreach ( $tags as $tag ) {
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$hash_tags[] = \sprintf(
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'<a rel="tag" class="hashtag u-tag u-category" href="%s">%s</a>',
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\esc_url( \get_tag_link( $tag ) ),
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esc_hashtag( $tag->name )
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);
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}
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return \implode( ' ', $hash_tags );
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}
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/**
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* Generates output for the 'ap_title' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post title.
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*/
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public static function title( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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return \wp_strip_all_tags( \get_the_title( $item->ID ), true );
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}
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/**
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* Generates output for the 'ap_excerpt' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post excerpt.
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*/
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public static function excerpt( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$atts = shortcode_atts(
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array( 'length' => ACTIVITYPUB_EXCERPT_LENGTH ),
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$atts,
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$tag
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);
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$excerpt_length = intval( $atts['length'] );
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if ( 0 === $excerpt_length ) {
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$excerpt_length = ACTIVITYPUB_EXCERPT_LENGTH;
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}
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$excerpt = \get_post_field( 'post_excerpt', $item );
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if ( '' === $excerpt ) {
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$content = \get_post_field( 'post_content', $item );
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// An empty string will make wp_trim_excerpt do stuff we do not want.
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if ( '' !== $content ) {
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$excerpt = \strip_shortcodes( $content );
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/** This filter is documented in wp-includes/post-template.php */
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$excerpt = \apply_filters( 'the_content', $excerpt );
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$excerpt = \str_replace( ']]>', ']]>', $excerpt );
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}
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}
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// Strip out any remaining tags.
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$excerpt = \wp_strip_all_tags( $excerpt );
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/** This filter is documented in wp-includes/formatting.php */
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$excerpt_more = \apply_filters( 'excerpt_more', ' [...]' );
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$excerpt_more_len = strlen( $excerpt_more );
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// We now have a excerpt, but we need to check it's length, it may be longer than we want for two reasons:
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//
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// * The user has entered a manual excerpt which is longer that what we want.
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// * No manual excerpt exists so we've used the content which might be longer than we want.
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//
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// Either way, let's trim it up if we need too. Also, don't forget to take into account the more indicator
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// as part of the total length.
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//
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// Setup a variable to hold the current excerpts length.
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$current_excerpt_length = strlen( $excerpt );
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// Setup a variable to keep track of our target length.
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$target_excerpt_length = $excerpt_length - $excerpt_more_len;
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// Setup a variable to keep track of the current max length.
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$current_excerpt_max = $target_excerpt_length;
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// This is a loop since we can't calculate word break the string after 'the_excpert' filter has run (we would break
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// all kinds of html tags), so we have to cut the excerpt down a bit at a time until we hit our target length.
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while ( $current_excerpt_length > $target_excerpt_length && $current_excerpt_max > 0 ) {
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// Trim the excerpt based on wordwrap() positioning.
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// Note: we're using <br> as the linebreak just in case there are any newlines existing in the excerpt from the user.
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// There won't be any <br> left after we've run wp_strip_all_tags() in the code above, so they're
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// safe to use here. It won't be included in the final excerpt as the substr() will trim it off.
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$excerpt = substr( $excerpt, 0, strpos( wordwrap( $excerpt, $current_excerpt_max, '<br>' ), '<br>' ) );
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// If something went wrong, or we're in a language that wordwrap() doesn't understand,
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// just chop it off and don't worry about breaking in the middle of a word.
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if ( strlen( $excerpt ) > $excerpt_length - $excerpt_more_len ) {
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$excerpt = substr( $excerpt, 0, $current_excerpt_max );
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}
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// Add in the more indicator.
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$excerpt = $excerpt . $excerpt_more;
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// Run it through the excerpt filter which will add some html tags back in.
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$excerpt_filtered = apply_filters( 'the_excerpt', $excerpt );
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// Now set the current excerpt length to this new filtered length.
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$current_excerpt_length = strlen( $excerpt_filtered );
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// Check to see if we're over the target length.
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if ( $current_excerpt_length > $target_excerpt_length ) {
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// If so, remove 20 characters from the current max and run the loop again.
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$current_excerpt_max = $current_excerpt_max - 20;
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}
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}
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return \apply_filters( 'the_excerpt', $excerpt );
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}
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/**
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* Generates output for the 'ap_content' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post content.
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*/
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public static function content( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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// prevent inception
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remove_shortcode( 'ap_content' );
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$atts = shortcode_atts(
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array( 'apply_filters' => 'yes' ),
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$atts,
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$tag
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);
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$content = \get_post_field( 'post_content', $item );
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if ( 'yes' === $atts['apply_filters'] ) {
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$content = \apply_filters( 'the_content', $content );
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} else {
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$content = do_blocks( $content );
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$content = wptexturize( $content );
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$content = wp_filter_content_tags( $content );
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}
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// replace script and style elements
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$content = \preg_replace( '@<(script|style)[^>]*?>.*?</\\1>@si', '', $content );
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$content = strip_shortcodes( $content );
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$content = \trim( \preg_replace( '/[\n\r\t]/', '', $content ) );
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add_shortcode( 'ap_content', array( 'Activitypub\Shortcodes', 'content' ) );
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return $content;
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}
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/**
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* Generates output for the 'ap_permalink' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post permalink.
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*/
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public static function permalink( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$atts = shortcode_atts(
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array(
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'type' => 'url',
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),
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$atts,
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$tag
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);
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if ( 'url' === $atts['type'] ) {
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return \esc_url( \get_permalink( $item->ID ) );
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}
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return \sprintf(
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'<a href="%1$s">%1$s</a>',
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\esc_url( \get_permalink( $item->ID ) )
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);
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}
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/**
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* Generates output for the 'ap_shortlink' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post shortlink.
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*/
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public static function shortlink( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$atts = shortcode_atts(
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array(
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'type' => 'url',
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),
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$atts,
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$tag
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);
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if ( 'url' === $atts['type'] ) {
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return \esc_url( \wp_get_shortlink( $item->ID ) );
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}
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return \sprintf(
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'<a href="%1$s">%1$s</a>',
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\esc_url( \wp_get_shortlink( $item->ID ) )
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);
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}
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/**
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* Generates output for the 'ap_image' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string
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*/
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public static function image( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$atts = shortcode_atts(
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array(
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'type' => 'full',
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),
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$atts,
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$tag
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);
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$size = 'full';
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if ( in_array(
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$atts['type'],
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array( 'thumbnail', 'medium', 'large', 'full' ),
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true
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) ) {
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$size = $atts['type'];
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}
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$image = \get_the_post_thumbnail_url( $item->ID, $size );
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if ( ! $image ) {
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return '';
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}
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return \esc_url( $image );
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}
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/**
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* Generates output for the 'ap_hashcats' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post categories as hashtags.
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*/
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public static function hashcats( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$categories = \get_the_category( $item->ID );
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if ( ! $categories ) {
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return '';
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}
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$hash_tags = array();
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foreach ( $categories as $category ) {
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$hash_tags[] = \sprintf(
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'<a rel="tag" class="hashtag u-tag u-category" href="%s">%s</a>',
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\esc_url( \get_category_link( $category ) ),
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esc_hashtag( $category->name )
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);
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}
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return \implode( ' ', $hash_tags );
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}
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/**
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* Generates output for the 'ap_author' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The author name.
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*/
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public static function author( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$author_id = \get_post_field( 'post_author', $item->ID );
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$name = \get_the_author_meta( 'display_name', $author_id );
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if ( ! $name ) {
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return '';
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}
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return wp_strip_all_tags( $name );
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}
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/**
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* Generates output for the 'ap_authorurl' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The author URL.
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*/
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public static function authorurl( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$author_id = \get_post_field( 'post_author', $item->ID );
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$url = \get_the_author_meta( 'user_url', $author_id );
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if ( ! $url ) {
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return '';
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}
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return \esc_url( $url );
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}
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/**
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* Generates output for the 'ap_blogurl' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The site URL.
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*/
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public static function blogurl( $atts, $content, $tag ) {
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return \esc_url( \get_bloginfo( 'url' ) );
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}
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/**
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* Generates output for the 'ap_blogname' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string
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*/
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public static function blogname( $atts, $content, $tag ) {
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return \wp_strip_all_tags( \get_bloginfo( 'name' ) );
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}
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/**
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* Generates output for the 'ap_blogdesc' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The site description.
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*/
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public static function blogdesc( $atts, $content, $tag ) {
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return \wp_strip_all_tags( \get_bloginfo( 'description' ) );
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}
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/**
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* Generates output for the 'ap_date' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post date.
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*/
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public static function date( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$datetime = \get_post_datetime( $item );
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$dateformat = \get_option( 'date_format' );
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$timeformat = \get_option( 'time_format' );
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$date = $datetime->format( $dateformat );
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if ( ! $date ) {
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return '';
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}
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return $date;
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}
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/**
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* Generates output for the 'ap_time' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post time.
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*/
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public static function time( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$datetime = \get_post_datetime( $item );
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$dateformat = \get_option( 'date_format' );
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$timeformat = \get_option( 'time_format' );
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$date = $datetime->format( $timeformat );
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if ( ! $date ) {
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return '';
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}
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return $date;
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}
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/**
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* Generates output for the 'ap_datetime' Shortcode
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*
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* @param array $atts The Shortcode attributes.
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* @param string $content The ActivityPub post-content.
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* @param string $tag The tag/name of the Shortcode.
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*
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* @return string The post date/time.
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*/
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public static function datetime( $atts, $content, $tag ) {
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$item = self::get_item();
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if ( ! $item ) {
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return '';
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}
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$datetime = \get_post_datetime( $item );
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$dateformat = \get_option( 'date_format' );
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$timeformat = \get_option( 'time_format' );
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$date = $datetime->format( $dateformat . ' @ ' . $timeformat );
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if ( ! $date ) {
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return '';
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}
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return $date;
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}
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/**
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* Get a WordPress item to federate.
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*
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* Checks if item (WP_Post) is "public", a supported post type
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* and not password protected.
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*
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* @return null|WP_Post The WordPress item.
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*/
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protected static function get_item() {
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$post = \get_post();
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if ( ! $post ) {
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return null;
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}
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if ( 'publish' !== \get_post_status( $post ) ) {
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return null;
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}
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if ( \post_password_required( $post ) ) {
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return null;
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}
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if ( ! \in_array( \get_post_type( $post ), \get_post_types_by_support( 'activitypub' ), true ) ) {
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return null;
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}
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return $post;
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}
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}
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