学步园

<?
  /****************************************
  名称:  dirmanage.php
    作者:  psdshow
                 联系方式: psdshow@yahoo.com.cn
    版本号:  1.0
  版权:
    编写日期: 2005年12月11日
    文件描述: 用于文件夹的操作(建立,删除,移动)
    修改日志:
  *****************************************/
class DirManage{
var $dir="";
      //构造函数
      function DirManage(){
                    ;
                    }

        //EchoStr:仅作测试输出用途
        function EchoStr($str){
          echo "<pre>";
          print_r($str);
          echo "</pre>";
          exit;
         }
 //处理路径,将 \,\\转换为/,如果路径末尾不包含/则加个/
         function DealDir($dir){
  if(empty($dir)){
                         $this->ErrorIs("路径不能为空");
                         }
                 if(strpos($dir,"\\")){
                         $dir=str_replace("\\","/",$dir);
                         }
                 if(substr($dir,-1)!="/"){
                         $dir.="/";
                         }
                 return $dir;
          }
         /*
         将一个文件的所有文件读入数组 ,
         */
         function _readdir($dir){
                 if(is_dir($dir)){
                         $dir_handle=@opendir($dir) or $this->ErrorIs("{$dir}目录不可读取");
                         while(false!==($file_handle=readdir($dir_handle))){
                                 if($file_handle=="." or $file_handle=="..")continue;
                                 if(is_dir($dir.$file_handle))$file[]=$dir.$file_handle."/";
                                 else $file[]=$dir.$file_handle;
                                 }
                         }
                 return $file;
                 }
         //建立文件夹
         function _mkDir($dir,$mode=0755){
                 $dir=$this->DealDir($dir);
                 if(strpos($dir,"/")){
                     $dir_info=explode("/",$dir);
                     foreach($dir_info as $key=>$value){
                         $dir_path.=$value."/";
                         if(!file_exists($dir_path)){
                             @mkdir($dir_path,$mode) or $this->ErrorIs("建立文件夹{$dir_path}时失败了");
                             }else{
                             continue;
                             }
                         }
                     }else{
                     @mkdir($dir,$mode) or $this->ErrorIs("{$dir}建立失败了,请检查权限");
                     }
                     return true;
                 }
         //删除文件夹,在删除前调用$this->DealDir和检测是否存在目录
         function _rmDir($dir){
                 if(is_dir($dir)){
                         $dir_handle=@opendir($dir) or $this->ErrorIs("目录{$dir}不可读取");
                         while(false!==($file_handle=readdir($dir_handle))){
                                 if($file_handle=="." or $file_handle=="..")continue;
                                 $this->_rmDir($dir."/".$file_handle);
                                 }
                         closedir($dir_handle);
                         if(!rmdir($dir)){
                                 $this->ErrorIs("文件夹{$dir}删除失败");
                                 }
                         }else{
                         unlink($dir);
                         }
                 $this->_clear();
                 return true;
                 }
         //移动单个文件
         function _movefile($src,$dst,$overwrite=1,$keep=0){
                 if(!file_exists($src)){
                         $this->ErrorIs("{$src}源文件不存在");
                         }
                 if(empty($dst)){
                         $this->ErrorIs("没有指定目标文件{$dst}");
                         }
                 if(file_exists($dst)){
                         if($overwrite==1){
                                 unlink($dst);
                                 }else{
                                 return false;
                                 }
                         }
                 if(copy($src,$dst)){
                         if($keep==0){
                                 unlink($src);
                                 }
                         return true;
                         }
                 }
         /*
          移动文件夹,可以是文件->文件夹,也可以是文件到文件夹
         $overwrite => 1 如果目标存在则覆盖
         $keep => 1 保留源文件
         set_time_limit(1000)执行大的文件移动时更改页面执行时间
         在执行此函数前,执行$this->DealDir();修正源和目标路径
         开始的判断总觉得不该在这里面判断~.~
         */
         function _moveDir($src,$dst,$overwrite=1,$keep=1){
                 if(!file_exists($src)){
                         $this->ErrorIs("{$src}源文件不存在");
                         }
                 if(is_dir($dst) and $overwrite==1){
                         $this->_rmDir($dst);
                         }
                 if(!is_dir($dst)){
                         $this->_mkdir($dst,0755);
                         }
                 if(is_dir($src)){
                         $src_handle=@opendir($src) or $this->ErrorIs("目录{$src}无读取权限");
                         while(false!==($file_handle=readdir($src_handle))){
                                 if($file_handle=="." or $file_handle=="..")continue;
                                 if(is_dir($src.$file_handle)){
                                         $this->_moveDir($src.$file_handle."/",$dst.$file_handle."/",$overwrite,$keep);
                                         }else{
                                         $this->_movefile($src.$file_handle,$dst.$file_handle,$overwrite,$keep);
                                         }
                                 }
                         closedir($src_handle);
                         if($keep!=1){
                                 $this->_rmDir($src);
                                 }
                         $this->_clear();
                         }
                 return (file_exists($dst));
                 }

         //清除缓存
         function _clear(){
                 clearstatcache();
                 }

         function ErrorIs($msg){
                 echo "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\">";
                 echo "$msg";
                 exit;
                 }

}
?>