-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))?)$/i
+const DT_SEPARATOR = /t|\s/i
+const DATE = /^(\d\d\d\d)-(\d\d)-(\d\d)$/
+const TIME = /^(\d\d):(\d\d):(\d\d)(?:\.\d+)?(?:z|([+-]\d\d)(?::?(\d\d))?)$/i
const DAYS = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
-export default function validTimestamp(str: string): boolean {
+export default function validTimestamp(str: string, allowDate: boolean): boolean {
// http://tools.ietf.org/html/rfc3339#section-5.6
- const matches: string[] | null = DATE_TIME.exec(str)
+ const dt: string[] = str.split(DT_SEPARATOR)
+ return (
+ (dt.length === 2 && validDate(dt[0]) && validTime(dt[1])) ||
+ (allowDate && dt.length === 1 && validDate(dt[0]))
+ )
+}
+
+function validDate(str: string): boolean {
+ const matches: string[] | null = DATE.exec(str)
if (!matches) return false
const y: number = +matches[1]
const m: number = +matches[2]
const d: number = +matches[3]
- const hr: number = +matches[4]
- const min: number = +matches[5]
- const sec: number = +matches[6]
- const tzH: number = +(matches[7] || 0)
- const tzM: number = +(matches[8] || 0)
return (
m >= 1 &&
m <= 12 &&
d >= 1 &&
(d <= DAYS[m] ||
// leap year: https://tools.ietf.org/html/rfc3339#appendix-C
- (m === 2 && d === 29 && (y % 100 === 0 ? y % 400 === 0 : y % 4 === 0))) &&
- ((hr <= 23 && min <= 59 && sec <= 59) ||
- // leap second
- (hr - tzH === 23 && min - tzM === 59 && sec === 60))
+ (m === 2 && d === 29 && (y % 100 === 0 ? y % 400 === 0 : y % 4 === 0)))
+ )
+}
+
+function validTime(str: string): boolean {
+ const matches: string[] | null = TIME.exec(str)
+ if (!matches) return false
+ const hr: number = +matches[1]
+ const min: number = +matches[2]
+ const sec: number = +matches[3]
+ const tzH: number = +(matches[4] || 0)
+ const tzM: number = +(matches[5] || 0)
+ return (
+ (hr <= 23 && min <= 59 && sec <= 59) ||
+ // leap second
+ (hr - tzH === 23 && min - tzM === 59 && sec === 60)
)
}