/**
* Get YouTube Transcript
*
* Generate re-encoded YouTube transcript
*
* @since 2.0
*
* @uses vye_extract_id Extract the ID
* @uses vye_get_file Get a file
* @uses vye_set_general_defaults Set default options
* @uses vye_validate_id Validate the ID
*
* @param string $id Video ID
* @param string $language Language
* @return string $output Transcript output
*/
function vye_generate_transcript($id, $language = 'en')
{
// Extract the ID if a full URL has been specified
$id = vye_extract_id($id);
// Check what type of video it is and whether it's valid
$embed_type = vye_validate_id($id);
if ($embed_type != 'v') {
if (strlen($embed_type) > 1) {
return vye_error($embed_type);
} else {
return vye_error(sprintf(__('The YouTube ID of %s is invalid.', 'youtube-embed'), $id));
}
}
// Get general options
$general = vye_set_general_defaults();
// Check to see if cache is available
if ($general['transcript_cache'] != 0) {
$cache_key = 'vye_transcript_' . $id;
$output = get_transient($cache_key);
if ($output !== false) {
return $output;
}
}
// Get transcript file
$return = vye_get_file('http://video.google.com/timedtext?lang=' . strtolower($language) . '&v=' . $id);
$xml = $return['file'];
$output = '';
// If transcript file exists, strip and output
if ($return['rc'] == 0) {
$output = "<!-- YouTube Embed v" . youtube_embed_version . " -->\n";
$pos = 0;
$eof = false;
while (!$eof) {
$text_start = strpos($xml, '<text ', $pos);
if ($text_start !== false) {
// Extract the start time
$start_start = strpos($xml, 'start="', $text_start) + 7;
$start_end = strpos($xml, '"', $start_start) - 1;
$start = substr($xml, $start_start, $start_end - $start_start + 1);
// Convert time format
$start = str_pad(floor($start), 3, '0', STR_PAD_LEFT);
$start = substr($start, 0, -2) . ':' . substr($start, -2, 2);
// Now extract the text
$text_start = strpos($xml, '>', $text_start) + 1;
$text_end = strpos($xml, '</text>', $text_start) - 1;
$text = substr($xml, $text_start, $text_end - $text_start + 1);
// Now return the output
$output .= "<div class=\"Transcript\"><span class=\"TranscriptTime\">" . $start . "</span> <span class=\"TranscriptText\">" . htmlspecialchars_decode($text) . "</span></div>\n";
$pos = $text_end + 7;
} else {
$eof = true;
}
}
$output .= "<!-- End of YouTube Embed code -->\n";
}
// Save the cache
if ($general['transcript_cache'] != 0) {
set_transient($cache_key, $output, 3600 * $general['transcript_cache']);
}
return $output;
}
/**
* Get XML transcript
*
* Return XML formatted YouTube transcript
*
* @since 2.0
*
* @uses vye_error Output an error
* @uses vye_extract_id Extract a video ID
* @uses vye_get_file Get a file
* @uses vye_validate_id Check the video ID is valid
*
* @param string $id YouTube video ID
* @param string $id Language
* @return string Transcript file in XML format
*/
function get_youtube_transcript_xml($id, $language = 'en')
{
// Extract the ID if a full URL has been specified
$id = vye_extract_id($id);
// Check what type of video it is and whether it's valid
$embed_type = vye_validate_id($id);
if ($embed_type != 'v') {
if (strlen($embed_type) > 1) {
echo vye_error($embed_type);
} else {
echo vye_error(sprintf(__('The YouTube ID of %s is invalid.', 'youtube-embed'), $id));
}
return;
}
// Get transcript file
$filename = 'http://video.google.com/timedtext?lang=' . strtolower($language) . '&v=' . $id;
$xml = vye_get_file($filename);
// Check success and return appropriate output
if ($xml['rc'] > 0) {
echo vye_error(sprintf(__('Could not fetch the transcript file %s.', 'youtube-embed'), $id));
return;
} else {
return $xml;
}
}
/**
* Get YouTube comments
*
* Generate output of video comments
*
* @since 3.2
*
* @uses vye_extract_id Extract the ID
* @uses vye_get_file Get a file
* @uses vye_set_general_defaults Set default options
* @uses vye_validate_id Validate the ID
*
* @param string $id Video ID
* @param string $language Language
* @return string $output Transcript output
*/
function vye_generate_comments($paras)
{
extract($paras);
if ($id == '') {
return vye_error(__('No YouTube ID was specified.', 'youtube-embed'));
}
// Extract the ID if a full URL has been specified
$id = vye_extract_id($id);
// Check what type of video it is and whether it's valid
$embed_type = vye_validate_id($id);
if ($embed_type != 'v') {
if (strlen($embed_type) > 1) {
return vye_error($embed_type);
} else {
return vye_error(sprintf(__('The YouTube ID of %s is invalid.', 'youtube-embed'), $id));
}
}
// Get general options
$general = vye_set_general_defaults();
// Get cache time
if ($cache == '') {
$cache = $general['comments_cache'];
}
// Check to see if cache is available
if ($cache != 0) {
$cache_key = 'vye_comments_' . $id;
$output = get_transient($cache_key);
$output = false;
if ($output !== false) {
return $output;
}
}
// Get transcript file
$return = vye_get_file('https://gdata.youtube.com/feeds/api/videos/' . $id . '/comments?orderby=published');
$xml = $return['file'];
$output = '';
// If comments file exists process the XML and build the output
if ($return['rc'] == 0) {
// Set default values
$output = "<!-- YouTube Embed v" . youtube_embed_version . " -->\n" . '<div id="comments">' . "\n";
$pos = 0;
$eof = false;
$number = 1;
if (!is_numeric($avatar)) {
$avatar = 32;
}
if (!is_numeric($limit)) {
$limit = 10;
}
$tab = "\t";
while (!$eof) {
$entry = vye_extract_xml($xml, 'entry');
if ($entry != '') {
// Extract field data from XML
$published = human_time_diff(strtotime(vye_extract_xml($entry, 'published')));
$comment = vye_extract_xml($entry, 'content');
$user = vye_extract_xml($entry, 'name');
$profile_url = 'http://www.youtube.com/user/' . $user;
$user_xml_url = vye_extract_xml($entry, 'uri');
// Get user image URL from a seperate XML file
$image_url = '';
$user_xml = wp_remote_get($user_xml_url);
$start_pos = strpos($user_xml['body'], '<media:thumbnail url=');
if ($start_pos !== false) {
$start_pos = $start_pos + 22;
$end_pos = strpos($user_xml['body'], '/>', $start_pos);
if ($end_pos !== false) {
$end_pos = $end_pos - 2;
$image_url = substr($user_xml['body'], $start_pos, $end_pos - $start_pos + 1);
}
}
// Using the information fetched above built the comment output
$output .= '<div id="comment-' . $number . '">' . "\n";
$output .= $tag . '<div class="comment-author">' . "\n";
if (is_numeric($avatar)) {
$output .= $tab . $tab . '<img alt="" src="' . $image_url . '" class="avatar avatar-' . $avatar . '" height="' . $avatar . 'px" width="' . $avatar . 'px" />' . "\n";
}
$output .= $tab . $tab . '<cite class="fn"><a href="' . $profile_url . '" rel="external nofollow" class="url">' . $user . '</a></cite>' . "\n";
$output .= $tab . '</div>' . "\n";
$output .= $tab . '<div class="comment-meta commentmetadata">' . $published . ' ' . __('ago', 'youtube-embed') . '</div>' . "\n";
$output .= $tab . '<div class="comment-body"><p>' . $comment . '</p></div>' . "\n";
$output .= '</div>' . "\n";
$number++;
if ($number > $limit) {
$eof = true;
}
} else {
$eof = true;
}
// Remove current record from the XML file
$next_record = strpos($xml, '</entry>');
if ($next_record !== false) {
$xml = substr($xml, $next_record + 8);
}
}
$output .= "</div>\n<!-- End of YouTube Embed code -->\n";
}
// Save the cache
if ($cache != 0) {
set_transient($cache_key, $output, 60 * $cache);
}
return $output;
}
