/wp-content/plugins/jetpack/modules/shortcodes/youtube.php
PHP | 284 lines | 155 code | 56 blank | 73 comment | 56 complexity | 2767768387b12c7a4666a7cae868c358 MD5 | raw file
- <?php
- /**
- * youtube shortcode
- *
- * Contains shortcode + some improvements over the Embeds syntax @
- * http://codex.wordpress.org/Embeds
- *
- * @example [youtube=http://www.youtube.com/watch?v=wq0rXGLs0YM&fs=1&hl=bg_BG]
- */
- /**
- * Replaces YouTube embeds with YouTube shortcodes.
- *
- * @param string $content HTML content.
- * @return string The content with YouTube embeds replaced with YouTube shortcodes.
- */
- // 2008-07-15:
- //<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/bZBHZT3a-FA&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><embed src="http://www.youtube.com/v/bZBHZT3a-FA&hl=en&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></object>
- // around 2008-06-06 youtube changed their old embed code to this:
- //<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/M1D30gS7Z8U&hl=en"></param><embed src="http://www.youtube.com/v/M1D30gS7Z8U&hl=en" type="application/x-shockwave-flash" width="425" height="344"></embed></object>
- // old style was:
- // <object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/dGY28Qbj76A&rel=0"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/dGY28Qbj76A&rel=0" type="application/x-shockwave-flash" wmode="transparent" width="425" height="344"></embed></object>
- // 12-2010:
- // <object width="640" height="385"><param name="movie" value="http://www.youtube.com/v/3H8bnKdf654?fs=1&hl=en_GB"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/3H8bnKdf654?fs=1&hl=en_GB" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="385"></embed></object>
- // 01-2011:
- // <iframe title="YouTube video player" class="youtube-player" type="text/html" width="640" height="390" src="http://www.youtube.com/embed/Qq9El3ki0_g" frameborder="0" allowFullScreen></iframe>
- // <iframe class="youtube-player" type="text/html" width="640" height="385" src="http://www.youtube.com/embed/VIDEO_ID" frameborder="0"></iframe>
- function youtube_embed_to_short_code( $content ) {
- if ( false === strpos( $content, 'youtube.com' ) )
- return $content;
- //older codes
- $regexp = '!<object width="\d+" height="\d+"><param name="movie" value="https?://www\.youtube\.com/v/([^"]+)"></param>(?:<param name="\w+" value="[^"]*"></param>)*<embed src="https?://www\.youtube\.com/v/(.+)" type="application/x-shockwave-flash"(?: \w+="[^"]*")* width="\d+" height="\d+"></embed></object>!i';
- $regexp_ent = htmlspecialchars( $regexp, ENT_NOQUOTES );
- $old_regexp = '!<embed(?:\s+\w+="[^"]*")*\s+src="https?(?:\:|�*58;)//www\.youtube\.com/v/([^"]+)"(?:\s+\w+="[^"]*")*\s*(?:/>|>\s*</embed>)!';
- $old_regexp_ent = str_replace( '&#0*58;', '&#0*58;|�*58;', htmlspecialchars( $old_regexp, ENT_NOQUOTES ) );
- //new code
- $ifr_regexp = '!<iframe((?:\s+\w+="[^"]*")*?)\s+src="https?://(?:www\.)*youtube.com/embed/([^"]+)".*?</iframe>!i';
- $ifr_regexp_ent = str_replace( '&#0*58;', '&#0*58;|�*58;', htmlspecialchars( $ifr_regexp, ENT_NOQUOTES ) );
- foreach ( array( 'regexp', 'regexp_ent', 'old_regexp', 'old_regexp_ent', 'ifr_regexp', 'ifr_regexp_ent' ) as $reg ) {
- if ( ! preg_match_all( $$reg, $content, $matches, PREG_SET_ORDER ) )
- continue;
- foreach ( $matches as $match ) {
- // Hack, but '?' should only ever appear once, and
- // it should be for the 1st field-value pair in query string,
- // if it is present
- // YouTube changed their embed code.
- // Example of how it is now:
- // <object width="640" height="385"><param name="movie" value="http://www.youtube.com/v/aP9AaD4tgBY?fs=1&hl=en_US"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/aP9AaD4tgBY?fs=1&hl=en_US" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="385"></embed></object>
- // As shown at the start of function, previous YouTube didn't '?'
- // the 1st field-value pair.
- if ( in_array ( $reg, array( 'ifr_regexp', 'ifr_regexp_ent' ) ) ) {
- $params = $match[1];
- if ( 'ifr_regexp_ent' == $reg )
- $params = html_entity_decode( $params );
- $params = wp_kses_hair( $params, array( 'http' ) );
- $width = isset( $params['width'] ) ? (int) $params['width']['value'] : 0;
- $height = isset( $params['height'] ) ? (int) $params['height']['value'] : 0;
- $wh = '';
- if ( $width && $height )
- $wh = "&w=$width&h=$height";
- $url = esc_url_raw( "http://www.youtube.com/watch?v={$match[2]}{$wh}" );
- } else {
- $match[1] = str_replace( '?', '&', $match[1] );
- $url = esc_url_raw( 'http://www.youtube.com/watch?v=' . html_entity_decode( $match[1] ) );
- }
- $content = str_replace( $match[0], "[youtube $url]", $content );
- do_action( 'jetpack_embed_to_shortcode', 'youtube', $url );
- }
- }
- return $content;
- }
- add_filter('pre_kses', 'youtube_embed_to_short_code');
- /**
- * Replaces plain-text links to YouTube videos with YouTube embeds.
- *
- * @param string $content HTML content
- * @return string The content with embeds instead of URLs
- */
- function youtube_link( $content ) {
- return preg_replace_callback( '!(?:\n|\A)http://(?:www\.)?(?:youtube.com/(?:v/|playlist|watch[/\#?])|youtu\.be/)[^\s]+?(?:\n|\Z)!i', 'youtube_link_callback', $content );
- }
- /**
- * Callback function for the regex that replaces YouTube URLs with
- * YouTube embeds.
- */
- function youtube_link_callback( $matches ) {
- return "\n" . youtube_id( $matches[0] ) . "\n";
- }
- /**
- * Normalizes a YouTube URL to include a v= parameter and a query string free of encoded ampersands.
- *
- * @param string $url
- * @return string The normalized URL
- */
- function youtube_sanitize_url( $url ) {
- $url = trim( $url, ' "' );
- $url = trim( $url );
- $url = str_replace( array( 'youtu.be/', '/v/', '#!v=', '&', '&', 'playlist' ), array( 'youtu.be/?v=', '/?v=', '?v=', '&', '&', 'videoseries' ), $url );
- // Replace any extra question marks with ampersands - the result of a URL like "http://www.youtube.com/v/9FhMMmqzbD8?fs=1&hl=en_US" being passed in.
- $query_string_start = strpos( $url, "?" );
- if ( false !== $query_string_start ) {
- $url = substr( $url, 0, $query_string_start + 1 ) . str_replace( "?", "&", substr( $url, $query_string_start + 1 ) );
- }
- return $url;
- }
- /*
- * url can be:
- * http://www.youtube.com/embed/videoseries?list=PL94269DA08231042B&hl=en_US
- * http://www.youtube.com/watch#!v=H2Ncxw1xfck
- * http://www.youtube.com/watch?v=H2Ncxw1xfck
- * http://www.youtube.com/watch?v=H2Ncxw1xfck&w=320&h=240&fmt=1&rel=0&showsearch=1&hd=0
- * http://www.youtube.com/v/jF-kELmmvgA
- * http://www.youtube.com/v/9FhMMmqzbD8?fs=1&hl=en_US
- * http://youtu.be/Rrohlqeir5E
- */
- function get_youtube_id( $url ) {
- $url = youtube_sanitize_url( $url );
- $url = parse_url( $url );
- $id = false;
- if ( ! isset( $url['query'] ) )
- return false;
- parse_str( $url['query'], $qargs );
- if ( ! isset( $qargs['v'] ) && ! isset( $qargs['list'] ) )
- return false;
- if ( isset( $qargs['list'] ) )
- $id = preg_replace( '|[^_a-z0-9-]|i', '', $qargs['list'] );
- if ( empty( $id ) )
- $id = preg_replace( '|[^_a-z0-9-]|i', '', $qargs['v'] );
- return $id;
- }
- /**
- * Converts a YouTube URL into an embedded YouTube video.
- */
- function youtube_id( $url ) {
- if ( apply_filters( 'jetpack_bail_on_shortcode', false, 'youtube' ) )
- return '';
- if ( ! $id = get_youtube_id( $url ) )
- return '<!--YouTube Error: bad URL entered-->';
- $url = youtube_sanitize_url( $url );
- $url = parse_url( $url );
- if ( ! isset( $url['query'] ) )
- return false;
- parse_str( $url['query'], $qargs );
- $agent = $_SERVER['HTTP_USER_AGENT'];
- // Bloglines & Google Reader handle YouTube well now, instead of
- // big blank space of yester year, so they can skip this treatment
- if ( is_feed() && ! preg_match( '#' . apply_filters( 'jetpack_shortcode_youtube_whitelist_user_agents', 'Bloglines|FeedFetcher-Google|feedburner' ) . '#i', $agent ) )
- return '<span style="text-align:center; display: block;"><a href="' . get_permalink() . '"><img src="http://img.youtube.com/vi/' . $id . '/2.jpg" alt="" /></a></span>';
- // calculate the width and height, taking content_width into consideration
- global $content_width;
- $input_w = ( isset( $qargs['w'] ) && intval( $qargs['w'] ) ) ? intval( $qargs['w'] ) : 0;
- $input_h = ( isset( $qargs['h'] ) && intval( $qargs['h'] ) ) ? intval( $qargs['h'] ) : 0;
- $default_width = get_option('embed_size_w');
- if ( empty( $default_width ) ) {
- if ( ! empty( $content_width ) ) {
- $default_width = $content_width;
- } else {
- $default_width = 640;
- }
- }
- if ( $input_w > 0 && $input_h > 0 ) {
- $w = $input_w;
- $h = $input_h;
- } elseif ( 0 == $input_w && 0 == $input_h ) {
- if ( isset( $qargs['fmt'] ) && intval( $qargs['fmt'] ) ) {
- $w = ( ! empty( $content_width ) ? min( $content_width, 480 ) : 480 );
- } else {
- $w = ( ! empty( $content_width ) ? min( $content_width, $default_width ) : $default_width );
- $h = ceil( ( $w / 16 ) * 9 ) + 30;
- }
- } elseif ( $input_w > 0 ) {
- $w = $input_w;
- $h = ceil( ( $w / 16 ) * 9 ) + 30;
- } else {
- if ( isset( $qargs['fmt'] ) && intval( $qargs['fmt'] ) ) {
- $w = ( ! empty( $content_width ) ? min( $content_width, 480 ) : 480 );
- } else {
- $w = ( ! empty( $content_width ) ? min( $content_width, $default_width ) : $default_width );
- $h = $input_h;
- }
- }
- $w = (int) apply_filters( 'youtube_width', $w );
- $h = (int) apply_filters( 'youtube_height', $h );
- $rel = ( isset( $qargs['rel'] ) && 0 == $qargs['rel'] ) ? 0 : 1;
- $search = ( isset( $qargs['showsearch'] ) && 1 == $qargs['showsearch'] ) ? 1 : 0;
- $info = ( isset( $qargs['showinfo'] ) && 0 == $qargs['showinfo'] ) ? 0 : 1;
- $iv = ( isset( $qargs['iv_load_policy'] ) && 3 == $qargs['iv_load_policy'] ) ? 3 : 1;
- $fmt = ( isset( $qargs['fmt'] ) && intval( $qargs['fmt'] ) ) ? '&fmt=' . (int) $qargs['fmt'] : '';
- $start = ( isset( $qargs['start'] ) && intval( $qargs['start'] ) ) ? '&start=' . (int) $qargs['start'] : '';
- $hd = ( isset( $qargs['hd'] ) && intval( $qargs['hd'] ) ) ? '&hd=' . (int) $qargs['hd'] : '';
- $wmode = ( isset( $qargs['wmode'] ) && in_array( strtolower( $qargs['wmode'] ), array( 'opaque', 'window', 'transparent' ) ) ) ? $qargs['wmode'] : 'transparent';
- $alignmentcss = 'text-align:center;';
- if ( isset( $qargs['align'] ) ) {
- switch ( $qargs['align'] ) {
- case 'left':
- $alignmentcss = "float:left; width:{$w}px; height:{$h}px; margin-right:10px; margin-bottom: 10px;";
- break;
- case 'right':
- $alignmentcss = "float:right; width:{$w}px; height:{$h}px; margin-left:10px; margin-bottom: 10px;";
- break;
- }
- }
- if ( ( isset( $url['path'] ) && '/videoseries' == $url['path'] ) || isset( $qargs['list'] ) ) {
- $html = "<span class='embed-youtube' style='$alignmentcss display: block;'><iframe class='youtube-player' type='text/html' width='$w' height='$h' src='" . esc_url( "http://www.youtube.com/embed/videoseries?list=$id&hl=en_US" ) . "' frameborder='0'></iframe></span>";
- } else {
- $html = "<span class='embed-youtube' style='$alignmentcss display: block;'><iframe class='youtube-player' type='text/html' width='$w' height='$h' src='" . esc_url( "http://www.youtube.com/embed/$id?version=3&rel=$rel&fs=1$fmt&showsearch=$search&showinfo=$info&iv_load_policy=$iv$start$hd&wmode=$wmode" ) . "' frameborder='0'></iframe></span>";
- }
- $html = apply_filters( 'video_embed_html', $html );
- return $html;
- }
- function youtube_shortcode( $atts ) {
- return youtube_id( ( isset ( $atts[0] ) ) ? ltrim( $atts[0] , '=' ) : shortcode_new_to_old_params( $atts ) );
- }
- add_shortcode( 'youtube', 'youtube_shortcode' );
- /**
- * For bare URLs on their own line of the form
- * http://www.youtube.com/v/9FhMMmqzbD8?fs=1&hl=en_US
- */
- function wpcom_youtube_embed_crazy_url( $matches, $attr, $url ) {
- return youtube_id( $url );
- }
- function wpcom_youtube_embed_crazy_url_init() {
- wp_embed_register_handler( 'wpcom_youtube_embed_crazy_url', '#http://(?:www\.)?(?:youtube.com/(?:v/|playlist|watch[/\#?])|youtu\.be/).*#i', 'wpcom_youtube_embed_crazy_url' );
- }
- add_action( 'init', 'wpcom_youtube_embed_crazy_url_init' );
- // higher priority because we need it before auto-link and autop get to it
- if ( get_option('embed_autourls') ) {
- add_filter( 'comment_text', 'youtube_link', 1 );
- }