postgrejs/esm/util/parse-time.js

Professional PostgreSQL client NodeJS

import { fastParseInt } from './fast-parseint.js';
// noinspection RegExpUnnecessaryNonCapturingGroup
export const STRICT_TIME_PATTERN = /^([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])(?:\.(\d+))?(?:(Z)|(?:([+-])([01]?[0-9]|2[0-3]):?([0-5][0-9])?))?$/;
// noinspection RegExpUnnecessaryNonCapturingGroup
export const TIME_PATTERN = /^([01][0-9]|2[0-3]):?([0-5][0-9]):?([0-5][0-9])?(?:\.(\d+))?(?:(Z)|(?:([+-])([01]?[0-9]|2[0-3]):?([0-5][0-9])?))?$/;
export function parseTime(str, parseTimeZone, utc) {
    const m = str.match(TIME_PATTERN);
    if (!m)
        return new Date('invalid');
    const args = [
        1970, 0, 1, 0, 0, 0, 0,
    ];
    for (let i = 1; i < 4; i++) {
        const s = m[i];
        args[i + 2] = fastParseInt(s) || 0;
    }
    if (parseTimeZone && m[6]) {
        const r = m[9] === '-' ? -1 : 1;
        args[3] -= (fastParseInt(m[7]) || 0) * r;
        args[4] -= (fastParseInt(m[8]) || 0) * r;
        return new Date(Date.UTC(...args));
    }
    if (m[5] || utc)
        return new Date(Date.UTC(...args));
    return new Date(...args);
}