init

wp-content/plugins/jetpack/modules/shortcodes/inline-pdfs.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Embed support for Inline PDFs
+ *
+ * Takes a plain-text PDF URL (*.pdf), and attempts to embed it directly
+ * in the post instead of leaving it as a bare link.
+ *
+ * @package automattic/jetpack
+ */
+
+wp_embed_register_handler( 'inline-pdfs', '#https?://[^<]*\.pdf$#i', 'jetpack_inline_pdf_embed_handler' );
+
+/**
+ * Callback to modify the output of embedded PDF files.
+ *
+ * @param array $matches Regex partial matches against the URL passed.
+ * @param array $attr    Attributes received in embed response.
+ * @param array $url     Requested URL to be embedded.
+ */
+function jetpack_inline_pdf_embed_handler( $matches, $attr, $url ) {
+	/** This action is documented in modules/widgets/social-media-icons.php */
+	do_action( 'jetpack_bump_stats_extras', 'embeds', 'inline-pdf' );
+
+	$filename      = basename( wp_parse_url( $url, PHP_URL_PATH ) );
+	$fallback_text = sprintf(
+		/* translators: Placeholder is a file name, for example "file.pdf" */
+		esc_html__( 'Click to access %1$s', 'jetpack' ),
+		$filename
+	);
+
+	return sprintf(
+		'<p><a href="%1$s" target="_blank" rel="noopener noreferrer nofollow">%2$s</a></p>',
+		esc_url( $url ),
+		$fallback_text
+	);
+}