2023-07-27 05:31:52 +00:00
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/*
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2024-02-13 15:50:11 +00:00
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* SPDX-FileCopyrightText: syuilo and other misskey contributors
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2023-07-27 05:31:52 +00:00
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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2019-05-05 00:29:15 +00:00
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const CHARS = '0123456789abcdef';
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// 4bit Fixed hex value 'g'
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// 44bit UNIX Time ms in Hex
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// 48bit Random value in Hex
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2023-04-08 19:41:06 +00:00
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export const meidgRegExp = /^g[0-9a-f]{23}$/;
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2019-05-05 00:29:15 +00:00
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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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return time.toString(16).padStart(11, 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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2023-10-16 01:45:22 +00:00
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export function genMeidg(t: number): string {
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return 'g' + getTime(t) + getRandom();
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2019-05-05 00:29:15 +00:00
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}
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2023-04-08 19:41:06 +00:00
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export function parseMeidg(id: string): { date: Date; } {
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return {
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date: new Date(parseInt(id.slice(1, 12), 16)),
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};
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}
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2023-12-03 05:38:42 +00:00
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export function isSafeMeidgT(t: number): boolean {
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return t > 0;
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}
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