@echo off
(for /r %%i in (*) do (
   if not defined %%~xi set %%~xi=a&set /a n+=1&echo;%%~xi
))>d.txt
>>d.txt echo 共有 %n% 种类型的文件
start d.txt
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@echo off
(for /r %%i in (*) do (
   if not defined %%~xi (
   set %%~xi=a&set/a c+=1
   for /r %%j in (*%%~xi)do (set/a n+=1)
   call echo %%~xi :[%%n%%]
   set n=0
   )
))>d.txt
>>d.txt echo 共有 %c% 种类型的文件
start d.txt
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@echo off
setlocal ENABLEDELAYEDEXPANSION
for /r %%a in (*) do (
  if not defined %%~xa (
    set /a n+=1
    set /a #%%~xa+=1
    set %%~xa=1
    set _%%~xa=%%~za
  ) else (
  set /a _%%~xa=!_%%~xa!+%%~za
  set /a #%%~xa+=1
  )
)
echo.共有 !n! 种文件，其中：
for /f "tokens=1-2 delims=#=" %%a in ('set #') do set %%a=%%b
for /f "tokens=1-2 delims=_=" %%a in ('set _') do echo.%%a 文件共有 !%%a! 个，共 %%b 字节
pause
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/*&cls
@echo off
(for /f "delims=" %%a in ('dir /a-d/b/s^^^|find /v "%~nx0"') do @echo;%%~nxa*%%~za)|cscript -nologo -e:jscript "%~f0"
pause&exit
*/

function FormatSize(val){
    var s = '', val = Number(val);
    if(val >= 1125899906842624)
        s = parseInt((val/1125899906842624)*100)/100 +' PB';
    else if(val >= 1099511627776)
        s = parseInt((val/1099511627776)*100)/100 +' TB';
    else if (val >= 1073741824)
        s = parseInt((val/1073741824)*100)/100 +' GB';
    else if (val >= 1048576)
        s = parseInt((val/1048576)*100)/100 +' MB';
    else if (val >= 1024)
        s = parseInt((val/1024)*100)/100 +' KB';
    else s = val+' 字节';
    return s;
}

var files = WSH.StdIn.ReadAll().split(/\r\n/);
var count = {}, size = {};
for(var i = 0; i<files.length; i++){
    var f = files[i].split('*');
    var ext = /\./.test(f[0])?f[0].replace(/.+(\.[^\.]+)/, '$1'):f[0];
    var ext = ext.toLowerCase();
    count[ext]?count[ext]++:count[ext]=1;
    size[ext]?size[ext]+=Number(f[1]):size[ext]=Number(f[1]);
}

var n = m = sum =0, txt = '';
for (var e in count){
    /\./.test(e)?n++:m++;
    sum+=size[e];
    txt +=e +'\t'+ count[e] +'\t'+ FormatSize(size[e]) +'\r\n';
}
var txt = txt+ '共' +n+ '种类型，';
if(m>0)txt += m +'个无扩展名的文件，';
WSH.echo(txt +'总大小'+ FormatSize(sum));
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