Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 119 insertions, 0 deletions

diff --git a/wp-includes/blocks/rss.php b/wp-includes/blocks/rss.php
new file mode 100644
index 0000000..91cdab3
--- /dev/null
+++ b/wp-includes/blocks/rss.php
@@ -0,0 +1,119 @@
+<?php
+/**
+ * Server-side rendering of the `core/rss` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/rss` block on server.
+ *
+ * @param array $attributes The block attributes.
+ *
+ * @return string Returns the block content with received rss items.
+ */
+function render_block_core_rss( $attributes ) {
+	if ( in_array( untrailingslashit( $attributes['feedURL'] ), array( site_url(), home_url() ), true ) ) {
+		return '<div class="components-placeholder"><div class="notice notice-error">' . __( 'Adding an RSS feed to this site’s homepage is not supported, as it could lead to a loop that slows down your site. Try using another block, like the <strong>Latest Posts</strong> block, to list posts from the site.' ) . '</div></div>';
+	}
+
+	$rss = fetch_feed( $attributes['feedURL'] );
+
+	if ( is_wp_error( $rss ) ) {
+		return '<div class="components-placeholder"><div class="notice notice-error"><strong>' . __( 'RSS Error:' ) . '</strong> ' . esc_html( $rss->get_error_message() ) . '</div></div>';
+	}
+
+	if ( ! $rss->get_item_quantity() ) {
+		return '<div class="components-placeholder"><div class="notice notice-error">' . __( 'An error has occurred, which probably means the feed is down. Try again later.' ) . '</div></div>';
+	}
+
+	$rss_items  = $rss->get_items( 0, $attributes['itemsToShow'] );
+	$list_items = '';
+	foreach ( $rss_items as $item ) {
+		$title = esc_html( trim( strip_tags( $item->get_title() ) ) );
+		if ( empty( $title ) ) {
+			$title = __( '(no title)' );
+		}
+		$link = $item->get_link();
+		$link = esc_url( $link );
+		if ( $link ) {
+			$title = "<a href='{$link}'>{$title}</a>";
+		}
+		$title = "<div class='wp-block-rss__item-title'>{$title}</div>";
+
+		$date = '';
+		if ( $attributes['displayDate'] ) {
+			$date = $item->get_date( 'U' );
+
+			if ( $date ) {
+				$date = sprintf(
+					'<time datetime="%1$s" class="wp-block-rss__item-publish-date">%2$s</time> ',
+					esc_attr( date_i18n( 'c', $date ) ),
+					esc_attr( date_i18n( get_option( 'date_format' ), $date ) )
+				);
+			}
+		}
+
+		$author = '';
+		if ( $attributes['displayAuthor'] ) {
+			$author = $item->get_author();
+			if ( is_object( $author ) ) {
+				$author = $author->get_name();
+				$author = '<span class="wp-block-rss__item-author">' . sprintf(
+					/* translators: %s: the author. */
+					__( 'by %s' ),
+					esc_html( strip_tags( $author ) )
+				) . '</span>';
+			}
+		}
+
+		$excerpt = '';
+		if ( $attributes['displayExcerpt'] ) {
+			$excerpt = html_entity_decode( $item->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) );
+			$excerpt = esc_attr( wp_trim_words( $excerpt, $attributes['excerptLength'], ' [&hellip;]' ) );
+
+			// Change existing [...] to [&hellip;].
+			if ( '[...]' === substr( $excerpt, -5 ) ) {
+				$excerpt = substr( $excerpt, 0, -5 ) . '[&hellip;]';
+			}
+
+			$excerpt = '<div class="wp-block-rss__item-excerpt">' . esc_html( $excerpt ) . '</div>';
+		}
+
+		$list_items .= "<li class='wp-block-rss__item'>{$title}{$date}{$author}{$excerpt}</li>";
+	}
+
+	$classnames = array();
+	if ( isset( $attributes['blockLayout'] ) && 'grid' === $attributes['blockLayout'] ) {
+		$classnames[] = 'is-grid';
+	}
+	if ( isset( $attributes['columns'] ) && 'grid' === $attributes['blockLayout'] ) {
+		$classnames[] = 'columns-' . $attributes['columns'];
+	}
+	if ( $attributes['displayDate'] ) {
+		$classnames[] = 'has-dates';
+	}
+	if ( $attributes['displayAuthor'] ) {
+		$classnames[] = 'has-authors';
+	}
+	if ( $attributes['displayExcerpt'] ) {
+		$classnames[] = 'has-excerpts';
+	}
+
+	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classnames ) ) );
+
+	return sprintf( '<ul %s>%s</ul>', $wrapper_attributes, $list_items );
+}
+
+/**
+ * Registers the `core/rss` block on server.
+ */
+function register_block_core_rss() {
+	register_block_type_from_metadata(
+		__DIR__ . '/rss',
+		array(
+			'render_callback' => 'render_block_core_rss',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_rss' );