267 lines
7.6 KiB
PHP
267 lines
7.6 KiB
PHP
<?php
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/**
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* Clean up wp_head()
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*
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* Remove unnecessary <link>'s
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* Remove inline CSS used by Recent Comments widget
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* Remove inline CSS used by posts with galleries
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* Remove self-closing tag and change ''s to "'s on rel_canonical()
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*/
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function roots_head_cleanup() {
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// Originally from http://wpengineer.com/1438/wordpress-header/
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remove_action('wp_head', 'feed_links', 2);
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remove_action('wp_head', 'feed_links_extra', 3);
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remove_action('wp_head', 'rsd_link');
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remove_action('wp_head', 'wlwmanifest_link');
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remove_action('wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0);
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remove_action('wp_head', 'wp_generator');
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remove_action('wp_head', 'wp_shortlink_wp_head', 10, 0);
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global $wp_widget_factory;
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remove_action('wp_head', array($wp_widget_factory->widgets['WP_Widget_Recent_Comments'], 'recent_comments_style'));
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if (!class_exists('WPSEO_Frontend')) {
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remove_action('wp_head', 'rel_canonical');
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add_action('wp_head', 'roots_rel_canonical');
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}
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}
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function roots_rel_canonical() {
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global $wp_the_query;
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if (!is_singular()) {
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return;
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}
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if (!$id = $wp_the_query->get_queried_object_id()) {
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return;
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}
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$link = get_permalink($id);
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echo "\t<link rel=\"canonical\" href=\"$link\">\n";
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}
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add_action('init', 'roots_head_cleanup');
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/**
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* Remove the WordPress version from RSS feeds
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*/
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add_filter('the_generator', '__return_false');
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/**
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* Clean up language_attributes() used in <html> tag
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*
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* Change lang="en-US" to lang="en"
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* Remove dir="ltr"
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*/
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function roots_language_attributes() {
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$attributes = array();
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$output = '';
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if (function_exists('is_rtl')) {
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if (is_rtl() == 'rtl') {
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$attributes[] = 'dir="rtl"';
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}
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}
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$lang = get_bloginfo('language');
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if ($lang && $lang !== 'en-US') {
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$attributes[] = "lang=\"$lang\"";
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} else {
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$attributes[] = 'lang="en"';
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}
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$output = implode(' ', $attributes);
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$output = apply_filters('roots_language_attributes', $output);
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return $output;
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}
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add_filter('language_attributes', 'roots_language_attributes');
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/**
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* Manage output of wp_title()
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*/
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function roots_wp_title($title) {
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if (is_feed()) {
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return $title;
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}
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$title .= get_bloginfo('name');
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return $title;
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}
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add_filter('wp_title', 'roots_wp_title', 10);
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/**
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* Clean up output of stylesheet <link> tags
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*/
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function roots_clean_style_tag($input) {
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preg_match_all("!<link rel='stylesheet'\s?(id='[^']+')?\s+href='(.*)' type='text/css' media='(.*)' />!", $input, $matches);
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// Only display media if it is meaningful
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$media = $matches[3][0] !== '' && $matches[3][0] !== 'all' ? ' media="' . $matches[3][0] . '"' : '';
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return '<link rel="stylesheet" href="' . $matches[2][0] . '"' . $media . '>' . "\n";
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}
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add_filter('style_loader_tag', 'roots_clean_style_tag');
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/**
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* Add and remove body_class() classes
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*/
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function roots_body_class($classes) {
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// Add post/page slug
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if (is_single() || is_page() && !is_front_page()) {
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$classes[] = basename(get_permalink());
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}
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// Remove unnecessary classes
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$home_id_class = 'page-id-' . get_option('page_on_front');
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$remove_classes = array(
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'page-template-default',
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$home_id_class
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);
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$classes = array_diff($classes, $remove_classes);
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return $classes;
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}
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add_filter('body_class', 'roots_body_class');
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/**
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* Wrap embedded media as suggested by Readability
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*
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* @link https://gist.github.com/965956
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* @link http://www.readability.com/publishers/guidelines#publisher
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*/
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function roots_embed_wrap($cache, $url, $attr = '', $post_ID = '') {
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return '<div class="entry-content-asset">' . $cache . '</div>';
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}
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add_filter('embed_oembed_html', 'roots_embed_wrap', 10, 4);
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/**
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* Add Bootstrap thumbnail styling to images with captions
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* Use <figure> and <figcaption>
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*
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* @link http://justintadlock.com/archives/2011/07/01/captions-in-wordpress
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*/
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function roots_caption($output, $attr, $content) {
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if (is_feed()) {
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return $output;
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}
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$defaults = array(
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'id' => '',
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'align' => 'alignnone',
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'width' => '',
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'caption' => ''
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);
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$attr = shortcode_atts($defaults, $attr);
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// If the width is less than 1 or there is no caption, return the content wrapped between the [caption] tags
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if ($attr['width'] < 1 || empty($attr['caption'])) {
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return $content;
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}
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// Set up the attributes for the caption <figure>
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$attributes = (!empty($attr['id']) ? ' id="' . esc_attr($attr['id']) . '"' : '' );
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$attributes .= ' class="thumbnail wp-caption ' . esc_attr($attr['align']) . '"';
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$attributes .= ' style="width: ' . (esc_attr($attr['width']) + 10) . 'px"';
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$output = '<figure' . $attributes .'>';
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$output .= do_shortcode($content);
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$output .= '<figcaption class="caption wp-caption-text">' . $attr['caption'] . '</figcaption>';
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$output .= '</figure>';
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return $output;
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}
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add_filter('img_caption_shortcode', 'roots_caption', 10, 3);
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/**
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* Remove unnecessary dashboard widgets
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*
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* @link http://www.deluxeblogtips.com/2011/01/remove-dashboard-widgets-in-wordpress.html
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*/
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function roots_remove_dashboard_widgets() {
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remove_meta_box('dashboard_incoming_links', 'dashboard', 'normal');
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remove_meta_box('dashboard_plugins', 'dashboard', 'normal');
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remove_meta_box('dashboard_primary', 'dashboard', 'normal');
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remove_meta_box('dashboard_secondary', 'dashboard', 'normal');
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}
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add_action('admin_init', 'roots_remove_dashboard_widgets');
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/**
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* Clean up the_excerpt()
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*/
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function roots_excerpt_length($length) {
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return POST_EXCERPT_LENGTH;
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}
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function roots_excerpt_more($more) {
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return ' … <a href="' . get_permalink() . '">' . __('Continued', 'roots') . '</a>';
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}
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add_filter('excerpt_length', 'roots_excerpt_length');
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add_filter('excerpt_more', 'roots_excerpt_more');
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/**
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* Remove unnecessary self-closing tags
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*/
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function roots_remove_self_closing_tags($input) {
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return str_replace(' />', '>', $input);
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}
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add_filter('get_avatar', 'roots_remove_self_closing_tags'); // <img />
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add_filter('comment_id_fields', 'roots_remove_self_closing_tags'); // <input />
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add_filter('post_thumbnail_html', 'roots_remove_self_closing_tags'); // <img />
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/**
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* Don't return the default description in the RSS feed if it hasn't been changed
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*/
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function roots_remove_default_description($bloginfo) {
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$default_tagline = 'Just another WordPress site';
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return ($bloginfo === $default_tagline) ? '' : $bloginfo;
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}
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add_filter('get_bloginfo_rss', 'roots_remove_default_description');
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/**
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* Redirects search results from /?s=query to /search/query/, converts %20 to +
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*
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* @link http://txfx.net/wordpress-plugins/nice-search/
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*/
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function roots_nice_search_redirect() {
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global $wp_rewrite;
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if (!isset($wp_rewrite) || !is_object($wp_rewrite) || !$wp_rewrite->using_permalinks()) {
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return;
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}
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$search_base = $wp_rewrite->search_base;
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if (is_search() && !is_admin() && strpos($_SERVER['REQUEST_URI'], "/{$search_base}/") === false) {
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wp_redirect(home_url("/{$search_base}/" . urlencode(get_query_var('s'))));
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exit();
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}
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}
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if (current_theme_supports('nice-search')) {
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add_action('template_redirect', 'roots_nice_search_redirect');
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}
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/**
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* Fix for empty search queries redirecting to home page
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*
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* @link http://wordpress.org/support/topic/blank-search-sends-you-to-the-homepage#post-1772565
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* @link http://core.trac.wordpress.org/ticket/11330
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*/
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function roots_request_filter($query_vars) {
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if (isset($_GET['s']) && empty($_GET['s'])) {
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$query_vars['s'] = ' ';
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}
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return $query_vars;
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}
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add_filter('request', 'roots_request_filter');
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/**
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* Tell WordPress to use searchform.php from the templates/ directory. Requires WordPress 3.6+
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*/
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function roots_get_search_form($form) {
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$form = '';
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locate_template('/templates/searchform.php', true, false);
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return $form;
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}
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add_filter('get_search_form', 'roots_get_search_form');
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