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