mempool/backend/src/utils/format.ts

62 lines
1.6 KiB
TypeScript

const byteUnits = ['B', 'kB', 'MB', 'GB', 'TB'];
export function getBytesUnit(bytes: number): string {
if (isNaN(bytes) || !isFinite(bytes)) {
return 'B';
}
let unitIndex = 0;
while (unitIndex < byteUnits.length && bytes > 1024) {
unitIndex++;
bytes /= 1024;
}
return byteUnits[unitIndex];
}
export function formatBytes(bytes: number, toUnit: string, skipUnit = false): string {
if (isNaN(bytes) || !isFinite(bytes)) {
return `${bytes}`;
}
let unitIndex = 0;
while (unitIndex < byteUnits.length && (toUnit && byteUnits[unitIndex] !== toUnit || (!toUnit && bytes > 1024))) {
unitIndex++;
bytes /= 1024;
}
return `${bytes.toFixed(2)}${skipUnit ? '' : ' ' + byteUnits[unitIndex]}`;
}
// https://stackoverflow.com/a/64235212
export function hex2bin(hex): string {
if (!hex) {
return '';
}
hex = hex.replace('0x', '').toLowerCase();
let out = '';
for (const c of hex) {
switch (c) {
case '0': out += '0000'; break;
case '1': out += '0001'; break;
case '2': out += '0010'; break;
case '3': out += '0011'; break;
case '4': out += '0100'; break;
case '5': out += '0101'; break;
case '6': out += '0110'; break;
case '7': out += '0111'; break;
case '8': out += '1000'; break;
case '9': out += '1001'; break;
case 'a': out += '1010'; break;
case 'b': out += '1011'; break;
case 'c': out += '1100'; break;
case 'd': out += '1101'; break;
case 'e': out += '1110'; break;
case 'f': out += '1111'; break;
default: return '';
}
}
return out;
}