32 lines
815 B
TypeScript
32 lines
815 B
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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// Crockford's Base32
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// https://github.com/ulid/spec#encoding
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import { parseBigInt32 } from '@/misc/bigint.js';
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const CHARS = '0123456789ABCDEFGHJKMNPQRSTVWXYZ';
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export const ulidRegExp = /^[0123456789ABCDEFGHJKMNPQRSTVWXYZ]{26}$/;
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function parseBase32(timestamp: string) {
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let time = 0;
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for (let i = 0; i < timestamp.length; i++) {
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time = time * 32 + CHARS.indexOf(timestamp[i]);
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}
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return time;
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}
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export function parseUlid(id: string): { date: Date; } {
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return { date: new Date(parseBase32(id.slice(0, 10))) };
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}
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export function parseUlidFull(id: string): { date: number; additional: bigint; } {
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return {
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date: parseBase32(id.slice(0, 10)),
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additional: parseBigInt32(id.slice(10, 26)),
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};
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}
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