36 lines
664 B
TypeScript
36 lines
664 B
TypeScript
const CHARS = '0123456789abcdef';
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// same as object-id
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export const meidRegExp = /^[0-9a-f]{24}$/;
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function getTime(time: number) {
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if (time < 0) time = 0;
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if (time === 0) {
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return CHARS[0];
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}
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time += 0x800000000000;
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return time.toString(16).padStart(12, CHARS[0]);
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}
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function getRandom() {
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let str = '';
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for (let i = 0; i < 12; i++) {
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str += CHARS[Math.floor(Math.random() * CHARS.length)];
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}
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return str;
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}
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export function genMeid(date: Date): string {
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return getTime(date.getTime()) + getRandom();
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}
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export function parseMeid(id: string): { date: Date; } {
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return {
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date: new Date(parseInt(id.slice(0, 12), 16) - 0x800000000000),
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};
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}
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