/lib/Libs.class.php

<?php
abstract class Libs{
	abstract protected function init();
	abstract protected function main();
	
	public function run(){
		$this->init();
		$this->before();
		$this->main();
		$this->after();
	}
	
	public function before(){
		if(!empty($this->db)){
            $db_arr = include_once DIR_CONF.'db.conf.php';
            $this->load_class('mysql');
            $this->db_arr = explode(',', $this->db);
            foreach($this->db_arr as $v){
                if(!empty($v)){
                    $v = trim($v);
                    $db = $db_arr[$v];
					$prefix = $v.'_prefix';
			        $this->$v = new Mysql($db['host'], $db['port'], $db['name'], $db['pass'], $db['database'], $db['prefix']);
					$this->$prefix = $db['prefix'];
                }
            }
        }

        if(!empty($this->is_smarty)){
            require_once DIR_CONF.'smarty.conf.php';
            $this->smarty = $smarty;
        }
	}
	
	public function after(){
		global $file;
		if(!empty($this->tpl)){
			$this->tpl_include($this->tpl);
		}else if(!empty($this->_json_data)){
			echo json_encode($this->_json_data);
        }

        if(!empty($this->db_arr)){
            foreach((array)$this->db_arr as $v){
                $v = trim($v);
                $this->$v->close();
            }
        }
	}
	
	public function tpl_include($tpl){
		global $file;
		$t_arr = explode('_', $tpl);
			
		$tplname = '';
		foreach($t_arr as $v){
			$tplname .= htmlspecialchars(ucwords(strtolower($v)), ENT_QUOTES, 'UTF-8').'_';
		}
		$tplname = substr($tplname, 0, -1);
		$tplname = explode('/', $tplname);
		$tpl_arr_count = count($tplname);
		$tplname[$tpl_arr_count - 1] = ucwords(strtolower($tplname[$tpl_arr_count - 1]));
		$tplname = implode('/', $tplname);
		if(file_exists(DIR_TPL.$file.$tplname.'.tpl.html')){
			foreach($this as $k => $v){
                $$k = $v;
                if(!empty($this->is_smarty)){
                    $this->smarty->assign($k, $$k);
                }
            }
            if(!empty($this->is_smarty)){
                $this->smarty->display($file.$tplname.'.tpl.html');
            }else {
                require DIR_TPL.$file.$tplname.'.tpl.html';
            }
		}else {
			if(DEBUG){
				exit('模版文件: '.DIR_TPL.$file.$tplname.'.tpl.html 不存在');
			}else {
				header('HTTP/1.1 404 Not Found'); 
				header("status: 404 Not Found"); 
			}
		}
    }

    public function load_fun($fun_name){
        if(file_exists(DIR_FUN.ucwords(strtolower($fun_name)).'.fun.php')){
            require_once DIR_FUN.ucwords(strtolower($fun_name)).'.fun.php';
        }else {
            if(DEBUG){
                exit('函数文件：'.ucwords(strtolower($fun_name)).'.fun.php 不存在');
            }else {
				header('HTTP/1.1 404 Not Found'); 
				header("status: 404 Not Found"); 
            }
        }
    }

    public function load_class($class_name){
        if(file_exists(DIR_CLASS.ucwords(strtolower($class_name)).'.class.php')){
            require_once DIR_CLASS.ucwords(strtolower($class_name)).'.class.php';
        }else {
			if(DEBUG){
                exit('类文件：'.ucwords(strtolower($class_name)).'.class.php 不存在');
            }else {
				header('HTTP/1.1 404 Not Found'); 
				header("status: 404 Not Found"); 
            }
        }
    }
}