Marc Mintel
5397309103
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47 lines
1.5 KiB
Plaintext
47 lines
1.5 KiB
Plaintext
const DT_SEPARATOR = /t|\s/i
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const DATE = /^(\d\d\d\d)-(\d\d)-(\d\d)$/
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const TIME = /^(\d\d):(\d\d):(\d\d)(?:\.\d+)?(?:z|([+-]\d\d)(?::?(\d\d))?)$/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, allowDate: boolean): boolean {
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// http://tools.ietf.org/html/rfc3339#section-5.6
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const dt: string[] = str.split(DT_SEPARATOR)
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return (
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(dt.length === 2 && validDate(dt[0]) && validTime(dt[1])) ||
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(allowDate && dt.length === 1 && validDate(dt[0]))
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)
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}
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function validDate(str: string): boolean {
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const matches: string[] | null = DATE.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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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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)
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}
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function validTime(str: string): boolean {
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const matches: string[] | null = TIME.exec(str)
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if (!matches) return false
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const hr: number = +matches[1]
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const min: number = +matches[2]
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const sec: number = +matches[3]
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const tzH: number = +(matches[4] || 0)
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const tzM: number = +(matches[5] || 0)
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return (
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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/runtime/timestamp").default'
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