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349 lines
9.8 KiB
349 lines
9.8 KiB
import { get } from '../moment/get-set';
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import hasOwnProp from '../utils/has-own-prop';
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import { addFormatToken } from '../format/format';
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import { addUnitAlias } from './aliases';
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import { addUnitPriority } from './priorities';
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import {
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addRegexToken,
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match1to2,
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match2,
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matchWord,
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regexEscape,
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} from '../parse/regex';
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import { addParseToken } from '../parse/token';
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import { hooks } from '../utils/hooks';
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import { MONTH } from './constants';
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import toInt from '../utils/to-int';
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import isArray from '../utils/is-array';
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import isNumber from '../utils/is-number';
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import mod from '../utils/mod';
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import indexOf from '../utils/index-of';
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import { createUTC } from '../create/utc';
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import getParsingFlags from '../create/parsing-flags';
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import { isLeapYear } from '../utils/is-leap-year';
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export function daysInMonth(year, month) {
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if (isNaN(year) || isNaN(month)) {
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return NaN;
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}
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var modMonth = mod(month, 12);
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year += (month - modMonth) / 12;
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return modMonth === 1
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? isLeapYear(year)
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? 29
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: 28
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: 31 - ((modMonth % 7) % 2);
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}
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// FORMATTING
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addFormatToken('M', ['MM', 2], 'Mo', function () {
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return this.month() + 1;
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});
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addFormatToken('MMM', 0, 0, function (format) {
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return this.localeData().monthsShort(this, format);
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});
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addFormatToken('MMMM', 0, 0, function (format) {
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return this.localeData().months(this, format);
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});
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// ALIASES
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addUnitAlias('month', 'M');
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// PRIORITY
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addUnitPriority('month', 8);
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// PARSING
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addRegexToken('M', match1to2);
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addRegexToken('MM', match1to2, match2);
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addRegexToken('MMM', function (isStrict, locale) {
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return locale.monthsShortRegex(isStrict);
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});
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addRegexToken('MMMM', function (isStrict, locale) {
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return locale.monthsRegex(isStrict);
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});
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addParseToken(['M', 'MM'], function (input, array) {
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array[MONTH] = toInt(input) - 1;
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});
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addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
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var month = config._locale.monthsParse(input, token, config._strict);
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// if we didn't find a month name, mark the date as invalid.
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if (month != null) {
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array[MONTH] = month;
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} else {
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getParsingFlags(config).invalidMonth = input;
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}
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});
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// LOCALES
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var defaultLocaleMonths = 'January_February_March_April_May_June_July_August_September_October_November_December'.split(
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'_'
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),
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defaultLocaleMonthsShort = 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split(
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'_'
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),
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MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s)+MMMM?/,
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defaultMonthsShortRegex = matchWord,
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defaultMonthsRegex = matchWord;
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export { defaultLocaleMonths, defaultLocaleMonthsShort };
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export function localeMonths(m, format) {
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if (!m) {
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return isArray(this._months)
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? this._months
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: this._months['standalone'];
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}
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return isArray(this._months)
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? this._months[m.month()]
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: this._months[
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(this._months.isFormat || MONTHS_IN_FORMAT).test(format)
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? 'format'
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: 'standalone'
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][m.month()];
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}
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export function localeMonthsShort(m, format) {
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if (!m) {
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return isArray(this._monthsShort)
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? this._monthsShort
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: this._monthsShort['standalone'];
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}
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return isArray(this._monthsShort)
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? this._monthsShort[m.month()]
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: this._monthsShort[
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MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'
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][m.month()];
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}
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function handleStrictParse(monthName, format, strict) {
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var i,
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ii,
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mom,
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llc = monthName.toLocaleLowerCase();
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if (!this._monthsParse) {
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// this is not used
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this._monthsParse = [];
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this._longMonthsParse = [];
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this._shortMonthsParse = [];
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for (i = 0; i < 12; ++i) {
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mom = createUTC([2000, i]);
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this._shortMonthsParse[i] = this.monthsShort(
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mom,
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''
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).toLocaleLowerCase();
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this._longMonthsParse[i] = this.months(mom, '').toLocaleLowerCase();
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}
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}
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if (strict) {
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if (format === 'MMM') {
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ii = indexOf.call(this._shortMonthsParse, llc);
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return ii !== -1 ? ii : null;
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} else {
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ii = indexOf.call(this._longMonthsParse, llc);
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return ii !== -1 ? ii : null;
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}
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} else {
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if (format === 'MMM') {
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ii = indexOf.call(this._shortMonthsParse, llc);
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if (ii !== -1) {
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return ii;
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}
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ii = indexOf.call(this._longMonthsParse, llc);
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return ii !== -1 ? ii : null;
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} else {
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ii = indexOf.call(this._longMonthsParse, llc);
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if (ii !== -1) {
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return ii;
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}
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ii = indexOf.call(this._shortMonthsParse, llc);
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return ii !== -1 ? ii : null;
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}
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}
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}
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export function localeMonthsParse(monthName, format, strict) {
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var i, mom, regex;
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if (this._monthsParseExact) {
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return handleStrictParse.call(this, monthName, format, strict);
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}
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if (!this._monthsParse) {
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this._monthsParse = [];
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this._longMonthsParse = [];
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this._shortMonthsParse = [];
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}
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// TODO: add sorting
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// Sorting makes sure if one month (or abbr) is a prefix of another
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// see sorting in computeMonthsParse
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for (i = 0; i < 12; i++) {
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// make the regex if we don't have it already
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mom = createUTC([2000, i]);
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if (strict && !this._longMonthsParse[i]) {
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this._longMonthsParse[i] = new RegExp(
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'^' + this.months(mom, '').replace('.', '') + '$',
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'i'
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);
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this._shortMonthsParse[i] = new RegExp(
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'^' + this.monthsShort(mom, '').replace('.', '') + '$',
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'i'
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);
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}
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if (!strict && !this._monthsParse[i]) {
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regex =
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'^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
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this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
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}
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// test the regex
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if (
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strict &&
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format === 'MMMM' &&
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this._longMonthsParse[i].test(monthName)
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) {
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return i;
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} else if (
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strict &&
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format === 'MMM' &&
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this._shortMonthsParse[i].test(monthName)
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) {
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return i;
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} else if (!strict && this._monthsParse[i].test(monthName)) {
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return i;
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}
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}
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}
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// MOMENTS
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export function setMonth(mom, value) {
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var dayOfMonth;
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if (!mom.isValid()) {
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// No op
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return mom;
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}
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if (typeof value === 'string') {
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if (/^\d+$/.test(value)) {
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value = toInt(value);
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} else {
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value = mom.localeData().monthsParse(value);
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// TODO: Another silent failure?
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if (!isNumber(value)) {
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return mom;
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}
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}
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}
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dayOfMonth = Math.min(mom.date(), daysInMonth(mom.year(), value));
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mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
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return mom;
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}
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export function getSetMonth(value) {
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if (value != null) {
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setMonth(this, value);
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hooks.updateOffset(this, true);
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return this;
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} else {
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return get(this, 'Month');
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}
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}
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export function getDaysInMonth() {
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return daysInMonth(this.year(), this.month());
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}
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export function monthsShortRegex(isStrict) {
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if (this._monthsParseExact) {
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if (!hasOwnProp(this, '_monthsRegex')) {
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computeMonthsParse.call(this);
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}
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if (isStrict) {
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return this._monthsShortStrictRegex;
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} else {
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return this._monthsShortRegex;
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}
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} else {
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if (!hasOwnProp(this, '_monthsShortRegex')) {
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this._monthsShortRegex = defaultMonthsShortRegex;
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}
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return this._monthsShortStrictRegex && isStrict
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? this._monthsShortStrictRegex
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: this._monthsShortRegex;
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}
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}
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export function monthsRegex(isStrict) {
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if (this._monthsParseExact) {
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if (!hasOwnProp(this, '_monthsRegex')) {
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computeMonthsParse.call(this);
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}
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if (isStrict) {
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return this._monthsStrictRegex;
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} else {
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return this._monthsRegex;
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}
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} else {
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if (!hasOwnProp(this, '_monthsRegex')) {
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this._monthsRegex = defaultMonthsRegex;
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}
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return this._monthsStrictRegex && isStrict
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? this._monthsStrictRegex
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: this._monthsRegex;
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}
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}
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function computeMonthsParse() {
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function cmpLenRev(a, b) {
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return b.length - a.length;
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}
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var shortPieces = [],
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longPieces = [],
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mixedPieces = [],
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i,
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mom;
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for (i = 0; i < 12; i++) {
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// make the regex if we don't have it already
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mom = createUTC([2000, i]);
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shortPieces.push(this.monthsShort(mom, ''));
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longPieces.push(this.months(mom, ''));
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mixedPieces.push(this.months(mom, ''));
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mixedPieces.push(this.monthsShort(mom, ''));
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}
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// Sorting makes sure if one month (or abbr) is a prefix of another it
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// will match the longer piece.
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shortPieces.sort(cmpLenRev);
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longPieces.sort(cmpLenRev);
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mixedPieces.sort(cmpLenRev);
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for (i = 0; i < 12; i++) {
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shortPieces[i] = regexEscape(shortPieces[i]);
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longPieces[i] = regexEscape(longPieces[i]);
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}
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for (i = 0; i < 24; i++) {
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mixedPieces[i] = regexEscape(mixedPieces[i]);
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}
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this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
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this._monthsShortRegex = this._monthsRegex;
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this._monthsStrictRegex = new RegExp(
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'^(' + longPieces.join('|') + ')',
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'i'
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);
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this._monthsShortStrictRegex = new RegExp(
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'^(' + shortPieces.join('|') + ')',
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'i'
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);
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}
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