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✏️ Editing: archiveorg-book.php

<?php
/**
 * Archive.org Shortcode
 *
 * Usage:
 * [archiveorg-book goodytwoshoes00newyiala]
 * [archiveorg-book https://www.archive.org/stream/goodytwoshoes00newyiala]
 * [archiveorg id=goodytwoshoes00newyiala width=480 height=430]

* <iframe src="https://www.archive.org/stream/goodytwoshoes00newyiala?ui=embed#mode/1up" width="480px" height="430px" frameborder="0" ></iframe>
 *
 * @package automattic/jetpack
 */

/**
 * Get ID of requested archive.org book embed.
 *
 * @since 4.5.0
 *
 * @param array $atts Shortcode attributes.
 *
 * @return int|string
 */
function jetpack_shortcode_get_archiveorg_book_id( $atts ) {
	if ( isset( $atts[0] ) ) {
		$atts[0] = trim( $atts[0], '=' );
		if ( preg_match( '#archive.org/stream/(.+)/?$#i', $atts[0], $match ) ) {
			$id = $match[1];
		} else {
			$id = $atts[0];
		}
		return $id;
	}
	return 0;
}

/**
 * Convert an archive.org book shortcode into an embed code.
 *
 * @since 4.5.0
 *
 * @param array $atts An array of shortcode attributes.
 * @return string The embed code for the Archive.org book
 */
function jetpack_archiveorg_book_shortcode( $atts ) {
	global $content_width;

if ( isset( $atts[0] ) && empty( $atts['id'] ) ) {
		$atts['id'] = jetpack_shortcode_get_archiveorg_book_id( $atts );
	}

$atts = shortcode_atts(
		array(
			'id'     => '',
			'width'  => 480,
			'height' => 430,
		),
		$atts
	);

if ( ! $atts['id'] ) {
		return '';
	}

$id = $atts['id'];

if ( ! $atts['width'] ) {
		$width = absint( $content_width );
	} else {
		$width = (int) $atts['width'];
	}

if ( ! $atts['height'] ) {
		$height = round( ( $width / 640 ) * 360 );
	} else {
		$height = (int) $atts['height'];
	}

return sprintf(
		'<div class="embed-archiveorg-book" style="text-align:center;"><iframe title="%s" src="%s" width="%s" height="%s" style="border:0;" webkitallowfullscreen="true" mozallowfullscreen="true" allowfullscreen></iframe></div>',
		esc_attr__( 'Archive.org Book', 'jetpack' ),
		esc_url( "https://archive.org/stream/{$id}?ui=embed#mode/1up" ),
		esc_attr( $width ),
		esc_attr( $height )
	);
}

add_shortcode( 'archiveorg-book', 'jetpack_archiveorg_book_shortcode' );

/**
 * Compose shortcode from archive.org book iframe.
 *
 * @since 4.5.0
 *
 * @param string $content Post content.
 *
 * @return mixed
 */
function jetpack_archiveorg_book_embed_to_shortcode( $content ) {
	if ( ! is_string( $content ) || false === stripos( $content, 'archive.org/stream/' ) ) {
		return $content;
	}

$regexp = '!<iframe\s+src=[\'"](http|https)://(www.archive|archive)\.org/stream/([^\'"]+)[\'"]((?:\s+\w+(=[\'"][^\'"]*[\'"])?)*)\s></iframe>!i';

if ( ! preg_match_all( $regexp, $content, $matches, PREG_SET_ORDER ) ) {
		return $content;
	}

foreach ( $matches as $match ) {
		$url = explode( '?', $match[3] );
		$id  = $url[0];

$params = $match[4];

$params = wp_kses_hair( $params, array( 'http' ) );

$width  = isset( $params['width'] ) ? absint( $params['width']['value'] ) : 0;
		$height = isset( $params['height'] ) ? absint( $params['height']['value'] ) : 0;

$wh = '';
		if ( $width && $height ) {
			$wh = ' width=' . $width . ' height=' . $height;
		}

$shortcode = '[archiveorg-book ' . $id . $wh . ']';
		$content   = str_replace( $match[0], $shortcode, $content );
	}

return $content;
}

add_filter( 'pre_kses', 'jetpack_archiveorg_book_embed_to_shortcode' );

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