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193 rader
5.9 KiB
193 rader
5.9 KiB
<?php
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// +----------------------------------------------------------------------
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// | TOPThink [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2013 http://topthink.com All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: luofei614 <weibo.com/luofei614>
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// +----------------------------------------------------------------------
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namespace Think\Storage\Driver;
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use Think\Storage;
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// SAE环境文件写入存储类
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class Sae extends Storage{
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/**
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* 架构函数
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* @access public
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*/
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private $mc;
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private $kvs = array();
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private $htmls = array();
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private $contents = array();
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public function __construct() {
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if(!function_exists('memcache_init')){
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header('Content-Type:text/html;charset=utf-8');
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exit('请在SAE平台上运行代码。');
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}
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$this->mc = @memcache_init();
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if(!$this->mc){
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header('Content-Type:text/html;charset=utf-8');
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exit('您未开通Memcache服务，请在SAE管理平台初始化Memcache服务');
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}
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}
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/**
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* 获得SaeKv对象
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*/
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private function getKv(){
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static $kv;
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if(!$kv){
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$kv = new \SaeKV();
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if(!$kv->init())
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E('您没有初始化KVDB，请在SAE管理平台初始化KVDB服务');
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}
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return $kv;
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}
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/**
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* 文件内容读取
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* @access public
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* @param string $filename 文件名
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* @return string
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*/
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public function read($filename,$type=''){
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switch(strtolower($type)){
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case 'f':
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$kv = $this->getKv();
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if(!isset($this->kvs[$filename])){
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$this->kvs[$filename]=$kv->get($filename);
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}
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return $this->kvs[$filename];
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default:
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return $this->get($filename,'content',$type);
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}
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}
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/**
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* 文件写入
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* @access public
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* @param string $filename 文件名
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* @param string $content 文件内容
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* @return boolean
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*/
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public function put($filename,$content,$type=''){
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switch(strtolower($type)){
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case 'f':
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$kv = $this->getKv();
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$this->kvs[$filename] = $content;
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return $kv->set($filename,$content);
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case 'html':
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$kv = $this->getKv();
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$content = time().$content;
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$this->htmls[$filename] = $content;
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return $kv->set($filename,$content);
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default:
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$content = time().$content;
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if(!$this->mc->set($filename,$content,MEMCACHE_COMPRESSED,0)){
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E(L('_STORAGE_WRITE_ERROR_').':'.$filename);
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}else{
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$this->contents[$filename] = $content;
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return true;
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}
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}
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}
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/**
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* 文件追加写入
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* @access public
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* @param string $filename 文件名
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* @param string $content 追加的文件内容
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* @return boolean
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*/
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public function append($filename,$content,$type=''){
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if($old_content = $this->read($filename,$type)){
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$content = $old_content.$content;
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}
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return $this->put($filename,$content,$type);
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}
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/**
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* 加载文件
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* @access public
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* @param string $_filename 文件名
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* @param array $vars 传入变量
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* @return void
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*/
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public function load($_filename,$vars=null){
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if(!is_null($vars))
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extract($vars, EXTR_OVERWRITE);
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eval('?>'.$this->read($_filename));
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}
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/**
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* 文件是否存在
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* @access public
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* @param string $filename 文件名
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* @return boolean
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*/
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public function has($filename,$type=''){
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if($this->read($filename,$type)){
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return true;
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}else{
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return false;
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}
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}
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/**
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* 文件删除
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* @access public
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* @param string $filename 文件名
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* @return boolean
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*/
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public function unlink($filename,$type=''){
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switch(strtolower($type)){
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case 'f':
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$kv = $this->getKv();
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unset($this->kvs[$filename]);
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return $kv->delete($filename);
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case 'html':
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$kv = $this->getKv();
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unset($this->htmls[$filename]);
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return $kv->delete($filename);
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default:
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unset($this->contents[$filename]);
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return $this->mc->delete($filename);
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}
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}
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/**
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* 读取文件信息
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* @access public
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* @param string $filename 文件名
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* @param string $name 信息名 mtime或者content
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* @return boolean
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*/
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public function get($filename,$name,$type=''){
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switch(strtolower($type)){
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case 'html':
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if(!isset($this->htmls[$filename])){
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$kv = $this->getKv();
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$this->htmls[$filename] = $kv->get($filename);
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}
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$content = $this->htmls[$filename];
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break;
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default:
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if(!isset($this->contents[$filename])){
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$this->contents[$filename] = $this->mc->get($filename);
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}
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$content = $this->contents[$filename];
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}
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if(false===$content){
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return false;
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}
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$info = array(
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'mtime' => substr($content,0,10),
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'content' => substr($content,10)
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);
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return $info[$name];
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}
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}
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