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<?php |
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/** |
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* Archive.org Shortcode |
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* |
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* Usage: |
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* [archiveorg-book goodytwoshoes00newyiala] |
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* [archiveorg-book http://www.archive.org/stream/goodytwoshoes00newyiala] |
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* [archiveorg id=goodytwoshoes00newyiala width=480 height=430] |
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|
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* <iframe src='https://www.archive.org/stream/goodytwoshoes00newyiala?ui=embed#mode/1up' width='480px' height='430px' frameborder='0' ></iframe> |
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*/ |
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|
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/** |
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* Get ID of requested archive.org book embed. |
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* |
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* @since 4.5.0 |
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* |
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* @param $atts |
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* |
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* @return int|string |
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*/ |
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function jetpack_shortcode_get_archiveorg_book_id( $atts ) { |
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if ( isset( $atts[0] ) ) { |
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$atts[0] = trim( $atts[0], '=' ); |
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if ( preg_match( '#archive.org/stream/(.+)/?$#i', $atts[0], $match ) ) { |
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$id = $match[1]; |
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} else { |
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$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 book 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 book |
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*/ |
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function jetpack_archiveorg_book_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_book_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' => 480, |
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'height' => 430, |
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), |
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$atts |
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); |
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|
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if ( ! $atts['id'] ) { |
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return '<!-- error: missing archive.org book ID -->'; |
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} |
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|
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$id = $atts['id']; |
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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 = intval( $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 = intval( $atts['height'] ); |
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} |
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|
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$url = esc_url( set_url_scheme( "http://archive.org/stream/{$id}?ui=embed#mode/1up" ) ); |
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|
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$html = "<div class='embed-archiveorg-book' style='text-align:center;'><iframe src='$url' width='$width' height='$height' style='border:0;' webkitallowfullscreen='true' mozallowfullscreen='true' allowfullscreen></iframe></div>"; |
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return $html; |
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} |
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|
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add_shortcode( 'archiveorg-book', 'jetpack_archiveorg_book_shortcode' ); |
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|
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/** |
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* Compose shortcode from archive.org book iframe. |
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* |
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* @since 4.5.0 |
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* |
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* @param string $content |
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* |
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* @return mixed |
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*/ |
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function jetpack_archiveorg_book_embed_to_shortcode( $content ) { |
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if ( ! is_string( $content ) || false === stripos( $content, 'archive.org/stream/' ) ) { |
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return $content; |
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} |
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|
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$regexp = '!<iframe\s+src=[\'"](http|https)://(www.archive|archive)\.org/stream/([^\'"]+)[\'"]((?:\s+\w+(=[\'"][^\'"]*[\'"])?)*)\s></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( '?', $match[3] ); |
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$id = $url[0]; |
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|
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$params = $match[4]; |
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|
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$params = wp_kses_hair( $params, array( 'http' ) ); |
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|
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$width = isset( $params['width'] ) ? absint( $params['width']['value'] ) : 0; |
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$height = isset( $params['height'] ) ? absint( $params['height']['value'] ) : 0; |
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|
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$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-book ' . $id . $wh . ']'; |
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$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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add_filter( 'pre_kses', 'jetpack_archiveorg_book_embed_to_shortcode' ); |
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|
