mirror of https://github.com/jkjoy/sunpeiwen.git
32 lines
1.1 KiB
TypeScript
32 lines
1.1 KiB
TypeScript
import {_} from "./codegen"
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const DATE_TIME = /^(\d\d\d\d)-(\d\d)-(\d\d)(?:t|\s)(\d\d):(\d\d):(\d\d)(?:\.\d+)?(?:z|([+-]\d\d)(?::?(\d\d))?)$/i
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const DAYS = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
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export default function validTimestamp(str: string): boolean {
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// http://tools.ietf.org/html/rfc3339#section-5.6
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const matches: string[] | null = DATE_TIME.exec(str)
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if (!matches) return false
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const y: number = +matches[1]
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const m: number = +matches[2]
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const d: number = +matches[3]
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const hr: number = +matches[4]
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const min: number = +matches[5]
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const sec: number = +matches[6]
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const tzH: number = +(matches[7] || 0)
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const tzM: number = +(matches[8] || 0)
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return (
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m >= 1 &&
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m <= 12 &&
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d >= 1 &&
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(d <= DAYS[m] ||
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// leap year: https://tools.ietf.org/html/rfc3339#appendix-C
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(m === 2 && d === 29 && (y % 100 === 0 ? y % 400 === 0 : y % 4 === 0))) &&
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((hr <= 23 && min <= 59 && sec <= 59) ||
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// leap second
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(hr - tzH === 23 && min - tzM === 59 && sec === 60))
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)
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}
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validTimestamp.code = _`require("ajv/dist/compile/timestamp").default`
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