qiniu.php

<?php
$qiniu_link = cs_get_option('i_qiniu_link');
$qiniu_dir = cs_get_option('i_qiniu_dir');
$qiniu_exc = cs_get_option('i_qiniu_exc');

define('FocusCDNHost',home_url()); //wordpress网站网址
define('FocusCDNRemote',$qiniu_link); //cdn域名
define('FocusCDNIncludes',$qiniu_dir); //设置加速目录
define('FocusCDNExcludes',$qiniu_exc);  //设置文件白名单
define('FocusCDNRelative','');
function do_cdnrewrite_ob_start() {
    $rewriter = new FocusCDNRewriteWordpress();
    $rewriter->register_as_output_buffer();
}
add_action('template_redirect', 'do_cdnrewrite_ob_start');
class FocusCDNRewriteWordpress extends FocusCDNRewrite
{
    function __construct() {
        $excl_tmp = FocusCDNExcludes;
        $excludes = array_map('trim', explode('|', $excl_tmp));
        parent::__construct(
            FocusCDNHost,
            FocusCDNRemote,
            FocusCDNIncludes,
            $excludes,
            !!FocusCDNRelative
        );
    }
public function register_as_output_buffer() {
    if ($this->blog_url != FocusCDNRemote) {
        ob_start(array(&$this, 'rewrite'));
        }
    }
}
class FocusCDNRewrite {
    var $blog_url    = null;
    var $cdn_url     = null;
    var $include_dirs   = null;
    var $excludes    = array();
    var $rootrelative   = false;
function __construct($blog_url, $cdn_url, $include_dirs, array $excludes, $root_relative) {
    $this->blog_url   = $blog_url;
    $this->cdn_url    = $cdn_url;
    $this->include_dirs  = $include_dirs;
    $this->excludes   = $excludes;
    $this->rootrelative  = $root_relative;
}
protected function exclude_single(&$match) {
    foreach ($this->excludes as $badword) {
        if (stristr($match, $badword) != false) {
            return true;
        }
    }
    return false;
}
protected function rewrite_single(&$match) {
    if ($this->exclude_single($match[0])) {
        return $match[0];
    } else {
    if (!$this->rootrelative || strstr($match[0], $this->blog_url)) {
        return str_replace($this->blog_url, $this->cdn_url, $match[0]);
    } else {
        return $this->cdn_url . $match[0];
        }
    }
}
protected function include_dirs_to_pattern() {
    $input = explode(',', $this->include_dirs);
    if ($this->include_dirs == '' || count($input) < 1) {
        return 'wp\-content|wp\-includes';
    } else {
        return implode('|', array_map('quotemeta', array_map('trim', $input)));
    }
}
public function rewrite(&$content) {
    $dirs = $this->include_dirs_to_pattern();
    $regex = '#(?<=[(\"\'])';
    $regex .= $this->rootrelative ? ('(?:'.quotemeta($this->blog_url).')?') : quotemeta($this->blog_url);
    $regex .= '/(?:((?:'.$dirs.')[^\"\')]+)|([^/\"\']+\.[^/\"\')]+))(?=[\"\')])#';
    return preg_replace_callback($regex, array(&$this, 'rewrite_single'), $content);
    }
}