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| import React from 'react'
import { FormattedMessage } from 'react-intl'
import { formatMessage, prepare, trunc, memoize, DEFAULT_ALLOW_BLANK } from './helpers'
const DATE_RANGE_ERROR = (
<FormattedMessage id="form.errors.dateRange" defaultMessage="shoud be {op} {date}" />
)
const DATE_METHODS = {
y: function(d) { return d.getFullYear() },
m: function(d) { return d.getMonth() + 1 },
d: function(d) { return d.getDate() }
}
const PARSE_REG = /(y+|m+|d+)/g
const TO_STRING = ({}).toString;
let date = memoize(function ({
format,
ymd,
'=': eq,
'!=': diff,
'>': gt,
'>=': gte,
'<': lt,
'<=': lte,
message, msg,
'if': ifCond, unless,
allowBlank=DEFAULT_ALLOW_BLANK
}) {
msg = formatMessage(msg || message)
let normFormat = normalizeFormat(format, ymd)
return prepare(ifCond, unless, allowBlank, function(value) {
let date = normParseDate(value, normFormat, false)
if ('wrongFormat' === date) {
return msg || (
<FormattedMessage id="form.errors.dateFormat"
defaultMessage="expected format: {format}"
values={{ format: format }} />
)
}
if ('invalid' === date) {
return msg || (<FormattedMessage id="form.errors.dateInvalid" defaultMessage="is not a valid date"/>)
}
if (date) {
let date2
if (eq && +date !== +(date2 = getDate(eq))) {
return msg || dateRangeError({ op: '=', date: normFormatDate(date2, normFormat) })
}
if (diff && +date === +(date2 = getDate(diff))) {
return msg || dateRangeError({ op: '!=', date: normFormatDate(date2, normFormat) })
}
if (gt && date <= (date2 = getDate(gt))) {
return msg || dateRangeError({ op: '>', date: normFormatDate(date2, normFormat) })
}
if (gte && date < (date2 = getDate(gte))) {
return msg || dateRangeError({ op: '>=', date: normFormatDate(date2, normFormat) })
}
if (lt && date >= (date2 = getDate(lt))) {
return msg || dateRangeError({ op: '<', date: normFormatDate(date2, normFormat) })
}
if (lte && date > (date2 = getDate(lte))) {
return msg || dateRangeError({ op: '<=', date: normFormatDate(date2, normFormat) })
}
}
})
})
export default date
export function parseDate (strDate, format, ymd) {
return normParseDate(strDate, normalizeFormat(format, ymd), true)
}
export function formatDate (date, format, ymd) {
if (!(date instanceof Date) && '[object Date]' !== TO_STRING.call(date)) {
return null;
}
let t = new Date(date).getTime();
return t !== t ? null : normFormatDate(date, normalizeFormat(format, ymd))
}
function dateRangeError (values) {
return formatMessage({ id: 'form.errors.dateRange', values })
}
function getDate (d) {
if ('function' === typeof d) {
return new Date(+d())
}
if (isNaN(d) && 'today' === ('' + d).toLowerCase()) {
let today = new Date()
today.setHours(0, 0, 0, 0)
return today
}
return new Date(+d)
}
// FORMAT
function normFormatDate (date, format) {
return format.replace(PARSE_REG, function(m) {
let sym = m.charAt(0)
let len = m.length
let padded = padding(DATE_METHODS[sym](date), len)
return 'y' === sym ? padded.slice(padded.length - len, padded.length) : padded;
})
}
function normalizeFormat (format, ymd) {
if (!ymd) {
return format
}
let reverseMapping = { [ymd.charAt(0)]: 'y', [ymd.charAt(1)]: 'm', [ymd.charAt(2)]: 'd' }
return format.replace(new RegExp(`[${ymd}]`, 'g'), function(sym) {
return reverseMapping[sym]
})
}
function padding (num, pad) {
return '0'.repeat(Math.max(0, pad - ('' + num).length)) + num
}
// PARSE
function normParseDate (value, format, parse) {
let order = []
let reg = new RegExp('^' + format.replace(PARSE_REG, function(m) {
order.push(m.charAt(0))
return `([0-9]{${m.length}})`
}) + '$')
let match = value.match(reg)
if (match) {
let flags = {}
order.forEach(function(token, index) {
flags[token] = +match[index + 1]
})
let comparable = null != flags.y ? (null != flags.m ? true : null == flags.d) : false
flags = Object.assign({ y: 1970, m: 1, d: 1 }, flags)
if (flags.y < 100) {
flags.y = currentCentury(flags.y >= 69 ? -1 : 0) * 100 + flags.y
}
let date = new Date(flags.y, flags.m - 1, flags.d)
return checkFlags(date, flags) ? (comparable || parse ? date : null) : (parse ? new Date(NaN) : 'invalid')
}
return parse ? new Date(NaN) : 'wrongFormat'
}
function currentCentury (add) {
let century = trunc(new Date().getFullYear() / 100)
return century < 0 ? century - add : century + add
}
function checkFlags (date, flags) {
let [year, month, day] = [date.getFullYear(), date.getMonth() + 1, date.getDate()]
return year === flags.y && month === flags.m && day === flags.d
} |