procedure TForm1.FTPAnalysis(S:string;var UserName,Password,IP,FileName:String;var DirList:TStringList);
var
 i,j:integer;
 strAuthorization,strAddr,strDirFile:string;
 //授权信息
begin
 UserName:= 'anonymous';
 Password:= 'test@test.com';
 IP := '';
 strAddr := Copy(S,7,length(S)-6);
 //取得ftp://之后的部分
 //S 格式必须是类似ftp://rec:ooo@192.168.76.11/20050418/abcdef.vox，
 //或ftp://192.168.76.11/......
 i := Pos('@',S);
 if(i>0) then
 begin
  strAuthorization := Copy(S,7,i-7);
  //只取帐号密码字段
  j:=Pos(':',strAuthorization);
  if(j<1)then
   exit;
  UserName := Copy(strAuthorization,1,j-1);
  PassWord := Copy(strAuthorization,j+1,length(strAuthorization)-j);
 end;
 i := Pos('@',strAddr);
 j:=Pos('/',strAddr);
 if(j>0) then
  IP := Copy(strAddr,i+1,j-i-1);//获得IP地址
 strDirFile := Copy(strAddr,j+1,length(strAddr)-j);
 DirList.Delimiter := '/';
 DirList.DelimitedText := strDirFile;//获得目录列表
 FileName := DirList[DirList.count-1];//最后部分为文件名
 DirList.Delete(DirList.Count-1);
end;