49 lines
1.6 KiB
TypeScript
49 lines
1.6 KiB
TypeScript
export class FileSizeUnit {
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public constructor(
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public readonly bytes: number,
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public readonly longName: string,
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public readonly shortName: string,
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public readonly divisible: boolean = true,
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) {
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}
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}
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export class FileSize {
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public static readonly UNITS: Record<string, FileSizeUnit> = {
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B: new FileSizeUnit(1, 'byte', 'B', false),
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KB: new FileSizeUnit(1000, 'kilobyte', 'kB'),
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MB: new FileSizeUnit(1000 * 1000, 'megabyte', 'MB'),
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GB: new FileSizeUnit(1000 * 1000 * 1000, 'gigabyte', 'GB'),
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TB: new FileSizeUnit(1000 * 1000 * 1000 * 1000, 'terabyte', 'TB'),
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};
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public static humanizeFileSize(
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size: number,
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short: boolean = false,
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skipOneUnitNumber: boolean = false,
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units: FileSizeUnit[] = [
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this.UNITS.B,
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this.UNITS.KB,
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this.UNITS.MB,
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this.UNITS.GB,
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this.UNITS.TB,
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],
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): string {
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for (let i = units.length - 1; i > 0; i--) {
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const fileSizeUnit = units[i - 1];
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if (size >= fileSizeUnit.bytes && size < units[i].bytes) {
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const amount = size / fileSizeUnit.bytes;
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const unit = short ?
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fileSizeUnit.shortName :
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' ' + fileSizeUnit.longName + (amount > 1 ? 's' : '');
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const strAmount = fileSizeUnit.divisible ?
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amount.toFixed(1) :
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Math.floor(amount);
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return (amount > 1 || !skipOneUnitNumber ? strAmount : '') + unit;
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}
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}
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return '0';
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}
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}
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