portal-dashboard/app/components/lib/filesize.ts

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2024-03-27 06:02:21 +00:00
// Copied from https://github.com/hustcc/filesize.js
const si = {
radix: 1e3,
unit: ["b", "kb", "Mb", "Gb", "Tb", "Pb", "Eb", "Zb", "Yb"],
};
const iec = {
radix: 1024,
unit: ["b", "Kib", "Mib", "Gib", "Tib", "Pib", "Eib", "Zib", "Yib"],
};
const jedec = {
radix: 1024,
unit: ["b", "Kb", "Mb", "Gb", "Tb", "Pb", "Eb", "Zb", "Yb"],
};
export const SPECS = {
si,
iec,
jedec,
} as const;
/**
* file size
* @param bytes Number of file size bytes
* @param fixed Number of decimal, default is 1.
* @param spec String of file size spec, default is jedec. Options: si, iec, jedec.
*/
export default function filesize(bytes: number, fixed = 1, spec: keyof typeof SPECS = "jedec"): string {
let _bytes = Math.abs(bytes);
const { radix, unit } = SPECS[spec];
let loop = 0;
// calculate
while (_bytes >= radix) {
_bytes /= radix;
++loop;
}
return `${_bytes.toFixed(fixed)} ${unit[loop]}`;
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}