<?php

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/**

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* Embed support for Inline PDFs

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*

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* Takes a plain-text PDF URL (*.pdf), and attempts to embed it directly

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* in the post instead of leaving it as a bare link.

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*

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* @package automattic/jetpack

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*/

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if ( ! defined( 'ABSPATH' ) ) {

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exit( 0 );

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}

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wp_embed_register_handler( 'inline-pdfs', '#https?://[^<]*\.pdf$#i', 'jetpack_inline_pdf_embed_handler' );

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/**

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* Callback to modify the output of embedded PDF files.

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*

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* @param array $matches Regex partial matches against the URL passed.

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* @param array $attr Attributes received in embed response.

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* @param array $url Requested URL to be embedded.

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*/

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function jetpack_inline_pdf_embed_handler( $matches, $attr, $url ) {

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/** This action is documented in modules/widgets/social-media-icons.php */

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do_action( 'jetpack_bump_stats_extras', 'embeds', 'inline-pdf' );

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$filename = basename( wp_parse_url( $url, PHP_URL_PATH ) );

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$fallback_text = sprintf(

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/* translators: Placeholder is a file name, for example "file.pdf" */

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esc_html__( 'Click to access %1$s', 'jetpack' ),

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$filename

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);

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return sprintf(

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'<p><a href="%1$s" target="_blank" rel="noopener noreferrer nofollow">%2$s</a></p>',

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esc_url( $url ),

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$fallback_text

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);

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}

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