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<?php |
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/** |
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* Archive.org book shortcode. |
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* |
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* Usage: |
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* [archiveorg Experime1940] |
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* [archiveorg http://archive.org/details/Experime1940 poster=http://archive.org/images/map.png] |
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* [archiveorg id=Experime1940 width=640 height=480 autoplay=1] |
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|
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* <iframe src="http://archive.org/embed/Experime1940&autoplay=1&poster=http://archive.org/images/map.png" width="640" height="480" frameborder="0" webkitallowfullscreen="true" mozallowfullscreen="true" allowfullscreen></iframe> |
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* |
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* @package automattic/jetpack |
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*/ |
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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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|
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/** |
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* Get ID of requested archive.org embed. |
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* |
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* @since 4.5.0 |
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* |
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* @param array $atts Shortcode attributes. |
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* |
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* @return int|string |
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*/ |
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function jetpack_shortcode_get_archiveorg_id( $atts ) { |
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if ( isset( $atts[0] ) ) { |
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$atts[0] = trim( $atts[0], '=' ); |
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if ( preg_match( '#archive.org/(details|embed)/(.+)/?$#i', $atts[0], $match ) ) { |
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$id = $match[2]; |
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} else { |
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$id = $atts[0]; |
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} |
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return $id; |
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} |
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return 0; |
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} |
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|
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/** |
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* Convert an archive.org shortcode into an embed code. |
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* |
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* @since 4.5.0 |
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* |
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* @param array $atts An array of shortcode attributes. |
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* @return string The embed code for the archive.org video. |
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*/ |
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function jetpack_archiveorg_shortcode( $atts ) { |
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global $content_width; |
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|
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if ( isset( $atts[0] ) && empty( $atts['id'] ) ) { |
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$atts['id'] = jetpack_shortcode_get_archiveorg_id( $atts ); |
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} |
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|
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$atts = shortcode_atts( |
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array( |
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'id' => '', |
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'width' => 640, |
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'height' => 480, |
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'autoplay' => 0, |
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'poster' => '', |
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'playlist' => 0, |
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), |
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$atts |
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); |
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|
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if ( ! $atts['id'] ) { |
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return '<!-- error: missing archive.org ID -->'; |
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} |
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|
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$id = $atts['id']; |
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|
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// Allow extra query parameters to be baked into the identifier, e.g. "myitem&playlist=1" or "myitem?playlist=1". |
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// In some environments a the_content filter encodes "&" to "&" before do_shortcode runs, so the |
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// parser receives "myitem&playlist=1" — normalize that back before splitting. The sibling function |
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// jetpack_archiveorg_embed_to_shortcode() splits on "&" for the same reason. |
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$id = str_replace( '&', '&', $id ); |
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$id_extra_args = array(); |
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if ( preg_match( '/^([^?&]*)[?&](.*)$/', $id, $id_match ) ) { |
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$id = $id_match[1]; |
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wp_parse_str( $id_match[2], $id_extra_args ); |
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} |
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|
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// Re-check after the split — an identifier that's only a query string (e.g. "?playlist=1") leaves $id empty |
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// and would otherwise produce an item-less embed URL. |
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if ( '' === $id ) { |
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return '<!-- error: missing archive.org ID -->'; |
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} |
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|
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if ( ! $atts['width'] ) { |
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$width = absint( $content_width ); |
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} else { |
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$width = (int) $atts['width']; |
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} |
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|
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if ( ! $atts['height'] ) { |
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$height = round( ( $width / 640 ) * 360 ); |
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} else { |
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$height = (int) $atts['height']; |
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} |
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|
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$query_args = array(); |
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if ( $atts['autoplay'] ) { |
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$query_args['autoplay'] = 1; |
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} |
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if ( $atts['poster'] ) { |
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$query_args['poster'] = $atts['poster']; |
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} |
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if ( $atts['playlist'] ) { |
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$query_args['playlist'] = 1; |
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} |
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|
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// Explicit shortcode attributes take precedence over query parameters baked into the identifier. |
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$query_args = array_merge( $id_extra_args, $query_args ); |
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|
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$url = 'https://archive.org/embed/' . $id; |
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if ( ! empty( $query_args ) ) { |
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$url = add_query_arg( $query_args, $url ); |
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} |
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|
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return sprintf( |
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'<div class="embed-archiveorg" style="text-align:center;"><iframe title="%s" src="%s" width="%s" height="%s" style="border:0;" webkitallowfullscreen="true" mozallowfullscreen="true" allowfullscreen></iframe></div>', |
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esc_attr__( 'Archive.org', 'jetpack' ), |
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esc_url( $url ), |
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esc_attr( $width ), |
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esc_attr( $height ) |
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); |
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} |
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|
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add_shortcode( 'archiveorg', 'jetpack_archiveorg_shortcode' ); |
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|
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/** |
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* Compose shortcode from archive.org iframe. |
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* |
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* @since 4.5.0 |
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* |
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* @param string $content Post content. |
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* |
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* @return mixed |
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*/ |
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function jetpack_archiveorg_embed_to_shortcode( $content ) { |
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if ( ! is_string( $content ) || false === stripos( $content, 'archive.org/embed/' ) ) { |
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return $content; |
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} |
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|
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$regexp = '!<iframe\s+src=[\'"]https?://archive\.org/embed/([^\'"]+)[\'"]((?:\s+\w+(=[\'"][^\'"]*[\'"])?)*)></iframe>!i'; |
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|
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if ( ! preg_match_all( $regexp, $content, $matches, PREG_SET_ORDER ) ) { |
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return $content; |
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} |
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|
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foreach ( $matches as $match ) { |
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$url = explode( '&', $match[1] ); |
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$id = 'id=' . $url[0]; |
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|
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$autoplay = ''; |
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$poster = ''; |
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$url_count = count( $url ); |
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|
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for ( $ii = 1; $ii < $url_count; $ii++ ) { |
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if ( 'autoplay=1' === $url[ $ii ] ) { |
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$autoplay = ' autoplay="1"'; |
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} |
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|
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$map_matches = array(); |
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if ( preg_match( '/^poster=(.+)$/', $url[ $ii ], $map_matches ) ) { |
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$poster = " poster=\"{$map_matches[1]}\""; |
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} |
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} |
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|
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$params = $match[2]; |
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|
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$params = wp_kses_hair( $params, array( 'http' ) ); |
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|
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$width = isset( $params['width'] ) ? (int) $params['width']['value'] : 0; |
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$height = isset( $params['height'] ) ? (int) $params['height']['value'] : 0; |
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|
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$wh = ''; |
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if ( $width && $height ) { |
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$wh = ' width=' . $width . ' height=' . $height; |
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} |
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|
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$shortcode = '[archiveorg ' . $id . $wh . $autoplay . $poster . ']'; |
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$content = str_replace( $match[0], $shortcode, $content ); |
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} |
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|
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return $content; |
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} |
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|
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if ( jetpack_shortcodes_should_hook_pre_kses() ) { |
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add_filter( 'pre_kses', 'jetpack_archiveorg_embed_to_shortcode' ); |
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} |
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|
