【thinkphp3.x】ThinkPHP/Lib/Behavior/ContentReplaceBehavior.class.php文件分析

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

defined('THINK_PATH') or exit();
/**
* 系统行为扩展：模板内容输出替换
* @category   Think
* @package  Think
* @subpackage  Behavior
* @author   liu21st <liu21st@gmail.com>
*/
class ContentReplaceBehavior extends Behavior {
// 行为参数定义
protected $options   =  array(
'TMPL_PARSE_STRING' =>  array(),
);

// 行为扩展的执行入口必须是run
public function run(&$content){
$content = $this->templateContentReplace($content);
}

/**
* 模板内容替换
* @access protected
* @param string $content 模板内容
* @return string
*/
protected function templateContentReplace($content) {
// 系统默认的特殊变量替换
$replace =  array(
'__TMPL__'      =>  APP_TMPL_PATH,  // 项目模板目录
'__ROOT__'      =>  __ROOT__,       // 当前网站地址
'__APP__'       =>  __APP__,        // 当前项目地址
'__GROUP__'     =>  defined('GROUP_NAME')?__GROUP__:__APP__,
'__ACTION__'    =>  __ACTION__,     // 当前操作地址
'__SELF__'      =>  __SELF__,       // 当前页面地址
'__URL__'       =>  __URL__,
'../Public'     =>  APP_TMPL_PATH.'Public',// 项目公共模板目录
'__PUBLIC__'    =>  __ROOT__.'/Public',// 站点公共目录
);
// 允许用户自定义模板的字符串替换
if(is_array(C('TMPL_PARSE_STRING')) )
$replace =  array_merge($replace,C('TMPL_PARSE_STRING'));
$content = str_replace(array_keys($replace),array_values($replace),$content);
return $content;
}

}