16 lines
516 B
Dart
16 lines
516 B
Dart
|
import 'dart:math';
|
||
|
|
|
||
|
|
double _log10(num x) => log(x) / ln10;
|
||
|
|
|
||
|
|
extension FileFormatter on num {
|
||
|
|
String readableFileSize({bool base1024 = true}) {
|
||
|
|
if (this <= 0) return '0';
|
||
|
|
final base = base1024 ? 1024 : 1000;
|
||
|
|
final units = base1024
|
||
|
|
? ['Bi', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB']
|
||
|
|
: ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB'];
|
||
|
|
final digitGroups = (_log10(this) / _log10(base)).floor();
|
||
|
|
return '${(this / pow(base, digitGroups)).toStringAsFixed(2)} ${units[digitGroups]}';
|
||
|
|
}
|
||
|
|
}
|