function truncate_at_ellipsis($content)
{
$end = '[...]';
if (sustr::has($content, $end)) {
$content = sustr::upto($content, $end);
$content = sustr::rtrim_substr($content, $end);
}
return sustr::endwith($content, '[…]');
}
function head_tag_output()
{
global $wp_query;
$tags = $twitter_tags = array();
if (is_home()) {
//Type
$tags['og:type'] = 'blog';
//Twitter Type
$twitter_tags['twitter:card'] = 'summary';
//Title
if (!($tags['og:title'] = $this->get_setting('home_og_title'))) {
$tags['og:title'] = get_bloginfo('name');
}
//Description
if (!($tags['og:description'] = $this->get_setting('home_og_description'))) {
$tags['og:description'] = get_bloginfo('description');
}
//URL
$tags['og:url'] = suwp::get_blog_home_url();
//Image
$tags['og:image'] = $this->get_setting('home_og_image');
} elseif (is_singular()) {
$post = $wp_query->get_queried_object();
if (is_object($post)) {
//Type
if (!($tags['og:type'] = $this->get_postmeta('og_type'))) {
$tags['og:type'] = $this->get_setting("default_{$post->post_type}_og_type");
}
//Twitter Type
if (!($twitter_tags['twitter:card'] = $this->get_postmeta('twitter_card'))) {
$twitter_tags['twitter:card'] = $this->get_setting("default_{$post->post_type}_twitter_card");
}
//Title
if (!($tags['og:title'] = $this->get_postmeta('og_title'))) {
$tags['og:title'] = strip_tags(apply_filters('single_post_title', $post->post_title));
}
//Description
if (!($tags['og:description'] = $this->get_postmeta('og_description'))) {
if ($this->plugin->call_module_func('meta-descriptions', 'get_meta_desc', $meta_desc, false) && $meta_desc) {
$tags['og:description'] = $meta_desc;
}
}
//URL
$tags['og:url'] = get_permalink($post->ID);
//Image
$tags['og:image'] = $this->jlsuggest_value_to_url($this->get_postmeta('og_image'), true);
if (!$tags['og:image']) {
if ('attachment' == $post->post_type) {
$tags['og:image'] = wp_get_attachment_url();
} elseif (current_theme_supports('post-thumbnails') && ($thumbnail_id = get_post_thumbnail_id($post->ID))) {
$tags['og:image'] = wp_get_attachment_url($thumbnail_id);
}
}
//Additional fields
switch ($tags['og:type']) {
case 'article':
$tags['article:published_time'] = get_the_date('Y-m-d');
$tags['article:modified_time'] = get_the_modified_date('Y-m-d');
//Authorship generally doesn't apply to pages
if (!is_page() && $this->get_setting('enable_og_article_author', true)) {
$tags['article:author'] = get_author_posts_url($post->post_author);
}
$single_category = count(get_the_category()) == 1;
$taxonomy_names = suwp::get_taxonomy_names();
foreach ($taxonomy_names as $taxonomy_name) {
if ($terms = get_the_terms(get_the_ID(), $taxonomy_name)) {
if ($single_category && 'category' == $taxonomy_name) {
$meta_property = 'article:section';
} else {
$meta_property = 'article:tag';
}
foreach ($terms as $term) {
$tags[$meta_property][] = $term->name;
}
}
}
break;
}
//Author's Twitter Handle
$handle = get_user_meta($post->post_author, 'twitter', true);
$handle = $this->sanitize_twitter_handle($handle);
$twitter_tags['twitter:creator'] = $handle;
}
} elseif (is_author()) {
$author = $wp_query->get_queried_object();
if (is_object($author)) {
//Type
$tags['og:type'] = 'profile';
//Title
$tags['og:title'] = $author->display_name;
//Description
$tags['og:title'] = get_the_author_meta('description', $author->ID);
//Image
$tags['og:image'] = false;
//URL
$tags['og:url'] = get_author_posts_url($author->ID, $author->user_nicename);
//First Name
$tags['profile:first_name'] = get_the_author_meta('first_name', $author->ID);
//Last Name
$tags['profile:last_name'] = get_the_author_meta('last_name', $author->ID);
//Username
$tags['profile:username'] = $author->user_login;
//Twitter Handle
$handle = get_user_meta($author->ID, 'twitter', true);
$handle = $this->sanitize_twitter_handle($handle);
$twitter_tags['twitter:creator'] = $handle;
}
} else {
return;
}
if ($tags['og:type'] == 'none') {
$tags['og:type'] = '';
}
if ((!isset($tags['og:image']) || !$tags['og:image']) && $tags['og:image'] !== false) {
$tags['og:image'] = $this->jlsuggest_value_to_url($this->get_setting('default_og_image'), true);
}
//Site Name
if (!($tags['og:site_name'] = $this->get_setting('og_site_name'))) {
$tags['og:site_name'] = get_bloginfo('name');
}
//FB App ID
$tags['fb:app_id'] = $this->get_setting('default_fb_app_id');
//Twitter Site Handle
$twitter_tags['twitter:site'] = $this->get_setting('twitter_site_handle');
$twitter_tags['twitter:site:id'] = $this->get_setting('twitter_site_id_handle');
$twitter_tags['twitter:creator'] = $this->get_setting('twitter_creator_handle');
$twitter_tags['twitter:creator:id'] = $this->get_setting('twitter_creator_id_handle');
$twitter_tags['twitter:description'] = $this->get_setting('twitter_description_handle');
$twitter_tags['twitter:title'] = $this->get_setting('twitter_title_handle');
$twitter_tags['twitter:image:src'] = $this->get_setting('twitter_image_src_handle');
$twitter_tags['twitter:image:width'] = $this->get_setting('twitter_image_width_handle');
$twitter_tags['twitter:image:height'] = $this->get_setting('twitter_image_height_handle');
$twitter_tags['twitter:data1'] = $this->get_setting('twitter_data1_handle');
$twitter_tags['twitter:label1'] = $this->get_setting('twitter_label1_handle');
$twitter_tags['twitter:data2'] = $this->get_setting('twitter_data2_handle');
$twitter_tags['twitter:label2'] = $this->get_setting('twitter_label2_handle');
$twitter_tags['twitter:image0:src'] = $this->get_setting('twitter_image0_src_handle');
$twitter_tags['twitter:image1:src'] = $this->get_setting('twitter_image1_src_handle');
$twitter_tags['twitter:image2:src'] = $this->get_setting('twitter_image2_src_handle');
$twitter_tags['twitter:image3:src'] = $this->get_setting('twitter_image3_src_handle');
$twitter_tags['twitter:player'] = $this->get_setting('twitter_player_handle');
$twitter_tags['twitter:player:width'] = $this->get_setting('twitter_player_width_handle');
$twitter_tags['twitter:player:height'] = $this->get_setting('twitter_player_height_handle');
$twitter_tags['twitter:player:stream'] = $this->get_setting('twitter_player_stream_handle');
$twitter_tags['twitter:app:name:iphone'] = $this->get_setting('twitter_app_name_iphone_handle');
$twitter_tags['twitter:app:id:iphone'] = $this->get_setting('twitter_app_id_iphone_handle');
$twitter_tags['twitter:app:url:iphone'] = $this->get_setting('twitter_app_url_iphone_handle');
$twitter_tags['twitter:app:name:iphone'] = $this->get_setting('twitter_app_name_ipad_handle');
$twitter_tags['twitter:app:id:iphone'] = $this->get_setting('twitter_app_id_ipad_handle');
$twitter_tags['twitter:app:url:iphone'] = $this->get_setting('twitter_app_url_ipad_handle');
$twitter_tags['twitter:app:name:googleplay'] = $this->get_setting('twitter_app_name_googleplay_handle');
$twitter_tags['twitter:app:id:googleplay'] = $this->get_setting('twitter_app_id_googleplay_handle');
$twitter_tags['twitter:app:url:googleplay'] = $this->get_setting('twitter_app_url_googleplay_handle');
//Output meta tags
$namespace_urls = $this->namespaces_declared ? array() : $this->get_namespace_urls();
$doctype = $this->get_setting('doctype', '');
switch ($doctype) {
case 'xhtml':
$output_formats = array('<meta%3$s name="%1$s" content="%2$s" />' => array_merge($tags, $twitter_tags));
break;
case 'html5':
$output_formats = array('<meta%3$s property="%1$s" content="%2$s">' => array_merge($tags, $twitter_tags));
break;
default:
$output_formats = array('<meta%3$s property="%1$s" content="%2$s" />' => $tags, '<meta%3$s name="%1$s" content="%2$s" />' => $twitter_tags);
break;
}
foreach ($output_formats as $html_format => $format_tags) {
foreach ($format_tags as $property => $values) {
foreach ((array) $values as $value) {
$property = su_esc_attr($property);
$value = su_esc_attr($value);
if (strlen(trim($property)) && strlen(trim($value))) {
$namespace_attr = '';
$namespace = sustr::upto($property, ':');
if (!empty($namespace_urls[$namespace])) {
$a_namespace = su_esc_attr($namespace);
$a_namespace_url = su_esc_attr($namespace_urls[$namespace]);
switch ($doctype) {
case 'xhtml':
$namespace_attr = " xmlns:{$a_namespace}=\"{$a_namespace_url}\"";
break;
case 'html5':
default:
$namespace_attr = " prefix=\"{$a_namespace}: {$a_namespace_url}\"";
break;
}
}
echo "\t";
printf($html_format, $property, $value, $namespace_attr);
echo "\n";
}
}
}
}
}
