functions.php

<?php
/**
 * Functions.php contains all the core functions for your theme to work properly.
 *
 * @package dangopress
 */
 
if (is_admin()) {
    require_once('theme-options.php');
}

/**
 * Set the content width based on the theme's design and stylesheet.
 */
$content_width = 640;

/* 
 * Customize filter and actions
 */
remove_action('wp_head', 'feed_links', 2);
remove_action('wp_head', 'feed_links_extra', 3);
remove_action('wp_head', 'rsd_link');
remove_action('wp_head', 'wlwmanifest_link');
remove_action('wp_head', 'index_rel_link');
remove_action('wp_head', 'parent_post_rel_link', 10, 0);
remove_action('wp_head', 'start_post_rel_link', 10, 0);
remove_action('wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0);
remove_action('wp_head', 'locale_stylesheet');
remove_action('wp_head', 'noindex', 1);
remove_action('wp_head', 'wp_generator');
remove_action('wp_head', 'rel_canonical');
remove_action('wp_head', 'wp_shortlink_wp_head', 10, 0);

/* 
 * Disable xml rpc
 */
add_filter('xmlrpc_enabled', '__return_false');

/* 
 * Disable Automatic Formatting
 */
remove_filter('the_content', 'wptexturize');
remove_filter('the_excerpt', 'wptexturize');
remove_filter('the_title', 'wptexturize');
remove_filter('comment_text', 'wptexturize');

/*
 * Customize wordpress title
 */
function dangopress_wp_title($title, $sep)
{
    global $paged, $page;

    if (is_feed())
        return $title;

    // Add the site name.
    $title .= get_bloginfo('name');

    // Add the site description for the home/front page.
    $site_description = get_bloginfo('description', 'display');

    if ($site_description && (is_home() || is_front_page()))
        $title = "$title $sep $site_description";

    // Add a page number if necessary.
    if ($paged >= 2 || $page >= 2)
        $title = "$title $sep " . sprintf('第 %s 页', max($paged, $page));

    return $title;
}
add_filter('wp_title', 'dangopress_wp_title', 10, 2);

/**
 * Sets up theme defaults and registers support for various WordPress features.
 */
function dangopress_setup_theme()
{
    // Add theme support
    add_theme_support('automatic-feed-links');
    add_theme_support('custom-background');

    // Register wordpress menu
    register_nav_menus(array('primary' => 'Primary Navigation'));

    // Register sidebars for use in this theme
    register_sidebar(array(
        'name' => 'Sidebar',
        'id' => 'sidebar',
        'description' => 'Widgets in this area are used on the main sidebar region.',
        'before_widget' => '<div class="widget %2$s">',
        'after_widget' => '</div>',
        'before_title' => '<h3>',
        'after_title' => '</h3>',
    ));
}
add_action('after_setup_theme', 'dangopress_setup_theme');

/*
 * Get theme url prefix for styles or scripts
 */
function dangopress_get_url_prefix()
{
    $options = get_option('dangopress_options');

    if (!empty($options['cdn_prefix']))
        return $options['cdn_prefix'];
    else
        return get_template_directory_uri();
}

/*
 * Load css and javascript
 */
function dangopress_setup_load()
{
    // URL prefix
    $url_prefix = dangopress_get_url_prefix();

    // Main css
    wp_enqueue_style('style', get_stylesheet_uri());

    // Font awesome css
    wp_enqueue_style('font-awesome', $url_prefix . '/styles/font-awesome.min.css', array(), '3.2.1');

    // Replace jQuery, use Baidu Public Library CDN
    if (!is_admin()) {
        wp_deregister_script('jquery');
        wp_register_script('jquery', "http://libs.baidu.com/jquery/2.0.3/jquery.min.js",
                           array(), '2.0.3', true);
    }

    // Register prettify.js
    wp_enqueue_script('prettify-js', $url_prefix . '/scripts/prettify.min.js',
                       array(), '20130504', true);

    // Theme script
    wp_enqueue_script('kodango', $url_prefix . '/scripts/kodango.js',
                      array('jquery'), '1.0', true);

    // Thread comments
    if (get_option('thread_comments') && (is_single() || is_page()))
        wp_enqueue_script('comment-reply', $in_footer = true);
}
add_action('wp_enqueue_scripts','dangopress_setup_load');

/*
 * Wrap the post image in div container
 */
if (is_admin()) {
    function dangopress_wrap_post_image($html, $id, $caption, $title, $align, $url, $size, $alt)
    {
        return '<div class="post-image">'.$html.'</div>';
    }
    add_filter('image_send_to_editor', 'dangopress_wrap_post_image', 10, 8);
}

/*
 * Disable self ping
 */
function dangopress_disable_self_ping(&$links)
{
    $home = get_option('home');

    foreach ($links as $l => $link)
        if (0 === strpos($link, $home))
            unset($links[$l]);
}
add_action('pre_ping', 'dangopress_disable_self_ping');

/*
 * Remove version number in the loading script or stylesheet
 */
function dangopress_remove_version($src)
{
    $parts = explode('?ver', $src);
    return $parts[0];
}
add_filter('script_loader_src', 'dangopress_remove_version', 15, 1);
add_filter('style_loader_src', 'dangopress_remove_version', 15, 1);

/* 
 * Escape special characters in pre.prettyprint into their HTML entities
 */
function dangopress_esc_html($content)
{
    $regex = '/(<pre\s+[^>]*?class\s*?=\s*?[",\'].*?prettyprint.*?[",\'].*?>)(.*?)(<\/pre>)/si';
    return preg_replace_callback($regex, dangopress_esc_callback, $content);
}

function dangopress_esc_callback($matches)
{
    $tag_open = $matches[1];
    $content = $matches[2];
    $tag_close = $matches[3];

    $content = htmlspecialchars($content, ENT_NOQUOTES, get_bloginfo('charset'));

    return $tag_open . $content . $tag_close;
}
add_filter('the_content', 'dangopress_esc_html', 2);
add_filter('comment_text', 'dangopress_esc_html', 2);

/*
 * Retrieve paginated link for archive post pages
 */
function dangopress_paginate_links()
{
    global $wp_query;

    $total = $wp_query->max_num_pages;
    $big = 999999999; // need an unlikely integer

    if ($total > 1)  {
        echo paginate_links(array(
            'base' => str_replace($big, '%_%', esc_url(get_pagenum_link($big))),
            'format' => '%#%',
            'current' => max(1, get_query_var('paged')),
            'total' => $total,
            'prev_text' => '<i class="icon-circle-arrow-left"></i>',
            'next_text' => '<i class="icon-circle-arrow-right"></i>',
        ));
    }
}

/*
 * Show humanable time delta
 */
function dangopress_human_time_diff($gmt_time)
{
    $from_timestamp = strtotime("$gmt_time" . ' UTC');
    $to_timestamp = current_time('timestamp', 1);

    if ($to_timestamp - $from_timestamp > 604800) { // One week ago
        return date_i18n('Y-m-d G:i:s', $from_timestamp, true);
    } else {
        $diff = human_time_diff($from_timestamp, $to_timestamp);
        return $diff . '前';
    }
}

/*
 * Show a list of recent comments
 */
function dangopress_recent_comments($admin, $limit)
{
    global $wpdb;

    $sql = "SELECT DISTINCT ID, post_title, post_password, comment_ID,comment_author,
           comment_date_gmt, comment_date, comment_post_ID, comment_approved, comment_type,
           comment_author_url, comment_author_email, SUBSTRING(comment_content,1,22) AS com_excerpt
           FROM $wpdb->comments LEFT OUTER JOIN $wpdb->posts
           ON ($wpdb->comments.comment_post_ID=$wpdb->posts.ID)
           WHERE comment_approved ='1' AND comment_type=''
           AND post_password='' AND user_id='0' AND comment_author!='$admin'
           ORDER BY comment_date_gmt DESC LIMIT $limit";
 
    $comments = $wpdb->get_results($sql);
    $output="";

    foreach ($comments as $comment) {
        $output .= '<li class="clearfix rc_item">' . get_avatar($comment, 32);
        $output .= '<div class="rc_info">';
        $output .= '<a href="' . get_comment_link($comment) . '" title="《' . $comment->post_title . '》上的评论">';
        $output .= '<span class="rc_name">' . strip_tags($comment->comment_author) . '</span></a>';
        $output .= '<span class="rc_time">' . dangopress_human_time_diff($comment->comment_date_gmt) . '</span>';
        $output .= '<p class="rc_com">' . strip_tags($comment->com_excerpt) . '</p>';
        $ooutput .= '</div></li>';
    }

    $output = convert_smilies($output);

    echo $output;
}

/*
 * Get the most commented posts
 */
function dangopress_get_most_commented($posts_num = 10, $days = 60, $chars = 30)
{
    global $wpdb;

    $sql = "SELECT ID , post_title , comment_count
           FROM $wpdb->posts
           WHERE post_type = 'post' AND post_status = 'publish'
           AND TO_DAYS(now()) - TO_DAYS(post_date) < $days
           ORDER BY comment_count DESC LIMIT 0 , $posts_num ";

    $posts = $wpdb->get_results($sql);
    $output = "";

    foreach ($posts as $post) {
        $output .= '<li><a href="' . get_permalink($post->ID) . '" rel="bookmark" title="' . $post->post_title;
        $output .= ' (' . $post->comment_count . ' 条评论)" >' . wp_trim_words($post->post_title, $chars) . "</a></li>";
    }

    echo $output;
}

/*
 * Add the end mark in the end of post
 */
function dangopress_add_end_mark($content)
{
    $options = get_option('dangopress_options');

    if (is_singular()) {
        return $content . $options['post_end_mark'];
    } else {
        return $content;
    }
}

add_filter('the_content', 'dangopress_add_end_mark');

/*
 * Display comment lists
 */
function dangopress_comments_callback($comment, $args, $depth) {
    $GLOBALS['comment'] = $comment;

    global $commentcount;

    /* Initialize the comment count */
    if (!$commentcount) {
        $page = get_query_var('cpage') - 1;

        if ($page > 0) {
            $cpp = get_option('comments_per_page');
            $commentcount = $cpp * $page;
        } else {
            $commentcount = 0;
        }
    } 

    $comment_id = $comment->comment_ID; ?>

    <li <?php comment_class(); ?> id="li-comment-<?php echo $comment_id; ?>">
        <div id="comment-<?php echo $comment_id; ?>" class="comment-body <?php if ($comment->comment_approved == '0') echo 'pending-comment'; ?>">
            <div class="comment-avatar">
            <?php
                 $avatar_size = $depth == 1 ? '50' : '30';
                echo get_avatar($comment, $size = $avatar_size);
            ?>
            </div>

            <div class="comment-floor">

            <?php // Show the floor number
                if ($depth == 1) {
                     printf('#%1$s 楼', ++$commentcount);
                } else { /* Show reply linkn */
                    comment_reply_link(array_merge($args, array('reply_text' => ' 回复', 'depth' => $depth, 'max_depth' => $args['max_depth'])));
                }
            ?>

            </div>

            <div class="comment-meta">
                <span class="comment-author"><?php printf('<cite class="author">%s</cite>', get_comment_author_link()); ?></span>

            <?php if ($comment->comment_parent) { // Show reply to somebody
                $comment_parent_href = htmlspecialchars(get_comment_link($comment->comment_parent));
                $comment_parent = get_comment($comment->comment_parent);   

                $comment_title = mb_strimwidth(strip_tags($comment_parent->comment_content), 0, 100, '...');
            ?>
                <span class="comment-to">回复</span>   
                <span class="comment-author">
                    <cite class="author">
                        <a href="<?php echo $comment_parent_href;?>" title="<?php echo $comment_title; ?>"><?php echo $comment_parent->comment_author;?></a>
                    </cite>
                </span>

            <?php }?>  

                <span class="comment-date"><?php echo dangopress_human_time_diff($comment->comment_date_gmt); ?></span>
            </div>

            <div class="comment-text"><?php comment_text() ?></div>
            
            <?php if ($depth == 1) { ?>
            <div class="comment-reply">
                 <span class="icon-reply"></span>
                 <?php comment_reply_link(array_merge($args, array('reply_text' => ' 回复', 'depth' => $depth, 'max_depth' => $args['max_depth']))); ?>
            </div>
            <?php } ?>
        </div>
<?php
}

/*
 * Send an email when recieved a reply
 */
function dangopress_email_nodify($comment_id)
{
    global $wpdb;

    $admin_email = get_bloginfo ('admin_email');

    $comment = get_comment($comment_id);
    $comment_author_email = trim($comment->comment_author_email);

    $parent_id = $comment->comment_parent ? $comment->comment_parent : '';

    /*
     * Add comment_mail_notify column when first run
     */
    if ($wpdb->query("Describe $wpdb->comments comment_mail_notify") == '')
        $wpdb->query("ALTER TABLE $wpdb->comments ADD COLUMN comment_mail_notify TINYINT NOT NULL DEFAULT 0;");

    /*
     * Set notify value to 1 if the checkbox is checked in the comment form
     */
    if (isset($_POST['comment_mail_notify']))
        $wpdb->query("UPDATE $wpdb->comments SET comment_mail_notify='1' WHERE comment_ID='$comment_id'");

    $notify = $parent_id ? get_comment($parent_id)->comment_mail_notify : '0';
    $spam_confirmed = $comment->comment_approved;

    /*
     * Don't send email if:
     * 1. the comment is a spam
     * 2. the notify checkbox isn't checked
     */
    if ($notify != '1' || $spam_confirmed == 'spam')
        return;

    // Prepare the email
    $sender = 'no-reply@' . preg_replace('#^www.#', '', strtolower($_SERVER['SERVER_NAME']));

    $to = trim(get_comment($parent_id)->comment_author_email);
    $subject = '您在 [' . get_option('blogname') . '] 的留言有了回复';

    $from = 'From: "' . get_option('blogname') . '" <' . $sender . '>';
    $headers = "$from\nContent-Type: text/html; charset=" . get_option('blog_charset') . "\n";

    $message .= '<div style="background-color:#eef2fa;border:1px solid #d8e3e8;padding:0 15px;">';
    $message .= '<p style="color:#000">您好, <strong>' . trim(get_comment($parent_id)->comment_author) . '</strong>:</p>';
    $message .= '<p style="color:#000">您曾在《' . get_the_title($comment->comment_post_ID) . '》的留言: </p>';
    $message .= '<blockquote style="background:#fafafa;border-left:1px solid #ddd;padding:10px;margin:15px 0;">';
    $message .= trim(get_comment($parent_id)->comment_content) . '</blockquote>';
    $message .= '<p style="color:#000">收到来自 <strong>' . trim($comment->comment_author) . '</strong> 给您的回复:</p>';
    $message .= '<blockquote style="background:#fafafa;border-left:1px solid #ddd;padding:10px;margin:15px 0;">';
    $message .= trim($comment->comment_content) . '</blockquote>';
    $message .= '<p style="color:#000">您可以点击以下链接（或者复制链接到地址栏访问）查看回复的完整内容:</p>';
    $message .= '<blockquote style="background:#fafafa;border-left:1px solid #ddd;padding:10px;margin:15px 0;">';
    $message .= get_comment_link($comment) . '</blockquote>';
    $message .= '<p style="color:#000">欢迎再次光临 <a href="' . get_bloginfo('url') . '">' . get_bloginfo('name') . '</a></p>';
    $message .= '<p style="color:#888;">友情提醒: 此邮件由系统自动发送，请勿回复。</p></div>';

    wp_mail($to, $subject, $message, $headers);
}
add_action('comment_post', 'dangopress_email_nodify');

/*
 * Show breadcrumb by yoast breadcrumb plugin
 */
function dangopress_breadcrumb()
{
    if (!function_exists('yoast_breadcrumb') || is_home() || is_page())
        return;

    yoast_breadcrumb('<div id="site-breadcrumbs">', '</div>');
}

/* 
 * Customize breadcrumb links
 */
function dangopress_customize_breadcrumb($links)
{
    $my_links = array();

    foreach ($links as $index => $value) {
        if (isset($value['id'])) // post types
            continue;

        $my_links[] = $value;
    }

    return $my_links;
}
add_filter('wpseo_breadcrumb_links', 'dangopress_customize_breadcrumb', 10, 1);

/*
 * Place baidu share icons
 */
function dangopress_place_bdshare()
{
    $options = get_option('dangopress_options');

    if (empty($options['bdshare_uid']))
        return;
?>

<div id="bdshare" class="bdshare_t bds_tools_24 get-codes-bdshare">
    <a class="bds_tsina"></a>  
    <a class="bds_tqq"></a>  
    <a class="bds_twi"></a>
    <a class="bds_hi"></a>
    <a class="bds_douban"></a>
    <a class="bds_tieba"></a>
    <a class="bds_youdao"></a>
    <a class="bds_copy"></a>
    <span class="bds_more"></span>
</div>  

<?php

    add_action('wp_footer', 'dangopress_load_bdshare'); 
}

/*
 * Load baidu share scripts
 */
function dangopress_load_bdshare()
{
    $options = get_option('dangopress_options');
    $bdshare_uid = $options['bdshare_uid'];
?>

<script type="text/javascript" id="bdshare_js" data="type=tools&amp;uid=<?php echo $bdshare_uid; ?>" ></script>
<script type="text/javascript" id="bdshell_js"></script>
<script type="text/javascript">
document.getElementById("bdshell_js").src = "http://bdimg.share.baidu.com/static/js/shell_v2.js?cdnversion=" + Math.ceil(new Date()/3600000)
</script>

<?php 
}

/*
 * Insert analytics code snippets into head
 */
function dangopress_insert_analytics_snippets()
{
    $options = get_option('dangopress_options');

    if (!empty($options['google_webid'])) {
?>

<!-- Google Analytics -->
<script type="text/javascript">

var _gaq = _gaq || [];
_gaq.push(['_setAccount', '<?php echo $options['google_webid']; ?>']);
_gaq.push(['_trackPageview']);

(function() {
    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
  　var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();

</script>

<?php
    }

    if (!empty($options['bdtj_siteid'])) {
?>

<!-- Baidu Tongji -->
<script>
var _hmt = _hmt || [];
(function() {
    var hm = document.createElement("script");
    hm.src = "//hm.baidu.com/hm.js?<?php echo $options['bdtj_siteid']; ?>";
    var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(hm, s);
})();
</script>

<?php
    }
}
add_action('wp_head', 'dangopress_insert_analytics_snippets'); 

?>