<# :
cls&echo off&cd /d "%~dp0"
powershell -NoProfile -ExecutionPolicy bypass "[IO.File]::ReadAllText('%~f0',[Text.Encoding]::GetEncoding('GB2312'))|Invoke-Expression"
pause
exit
#>
$newfolder="result";
if(-not (test-path -literal $newfolder)){[void][IO.Directory]::CreateDirectory($newfolder)};
$enc=[Text.Encoding]::GetEncoding('GB2312');
$reg='('+[regex]::Escape('$CC32')+'.*?'+[regex]::Escape('$BB0')+')(\d+)('+[regex]::Escape('$HH')+')';
$files=@(dir -literal "."|?{('.txt' -eq $_.Extension) -and ($_ -is [System.IO.FileInfo])});
for($i=0;$i -lt $files.length;$i++){
    write-host $files[$i].Name;
    $text=[IO.File]::ReadAllLines($files[$i].FullName, $enc);
    for($j=0;$j -lt $text.count;$j++){
        $text[$j]=[regex]::replace($text[$j], $reg, {
            param($m);
            $len=$m.groups[2].value.length;
            $value=([int]$m.groups[2].value - 600).toString().PadLeft($len, '0');
            $m.groups[1].value+$value+$m.groups[3].value;
        });
    }
    $newfile=$newfolder.trimend('\')+'\'+$files[$i].Name;
    [IO.File]::WriteAllLines($newfile, $text, $enc);
}
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