/node_modules/moment/src/lib/units/month.js
https://bitbucket.org/coleman333/smartsite · JavaScript · 290 lines · 238 code · 34 blank · 18 comment · 60 complexity · 02f2c0c16099fe74f8152e2735689956 MD5 · raw file
- import { get } from '../moment/get-set';
- import hasOwnProp from '../utils/has-own-prop';
- import { addFormatToken } from '../format/format';
- import { addUnitAlias } from './aliases';
- import { addUnitPriority } from './priorities';
- import { addRegexToken, match1to2, match2, matchWord, regexEscape } from '../parse/regex';
- import { addParseToken } from '../parse/token';
- import { hooks } from '../utils/hooks';
- import { MONTH } from './constants';
- import toInt from '../utils/to-int';
- import isArray from '../utils/is-array';
- import isNumber from '../utils/is-number';
- import mod from '../utils/mod';
- import indexOf from '../utils/index-of';
- import { createUTC } from '../create/utc';
- import getParsingFlags from '../create/parsing-flags';
- import { isLeapYear } from '../units/year';
- export function daysInMonth(year, month) {
- if (isNaN(year) || isNaN(month)) {
- return NaN;
- }
- var modMonth = mod(month, 12);
- year += (month - modMonth) / 12;
- return modMonth === 1 ? (isLeapYear(year) ? 29 : 28) : (31 - modMonth % 7 % 2);
- }
- // FORMATTING
- addFormatToken('M', ['MM', 2], 'Mo', function () {
- return this.month() + 1;
- });
- addFormatToken('MMM', 0, 0, function (format) {
- return this.localeData().monthsShort(this, format);
- });
- addFormatToken('MMMM', 0, 0, function (format) {
- return this.localeData().months(this, format);
- });
- // ALIASES
- addUnitAlias('month', 'M');
- // PRIORITY
- addUnitPriority('month', 8);
- // PARSING
- addRegexToken('M', match1to2);
- addRegexToken('MM', match1to2, match2);
- addRegexToken('MMM', function (isStrict, locale) {
- return locale.monthsShortRegex(isStrict);
- });
- addRegexToken('MMMM', function (isStrict, locale) {
- return locale.monthsRegex(isStrict);
- });
- addParseToken(['M', 'MM'], function (input, array) {
- array[MONTH] = toInt(input) - 1;
- });
- addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
- var month = config._locale.monthsParse(input, token, config._strict);
- // if we didn't find a month name, mark the date as invalid.
- if (month != null) {
- array[MONTH] = month;
- } else {
- getParsingFlags(config).invalidMonth = input;
- }
- });
- // LOCALES
- var MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s)+MMMM?/;
- export var defaultLocaleMonths = 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_');
- export function localeMonths (m, format) {
- if (!m) {
- return isArray(this._months) ? this._months :
- this._months['standalone'];
- }
- return isArray(this._months) ? this._months[m.month()] :
- this._months[(this._months.isFormat || MONTHS_IN_FORMAT).test(format) ? 'format' : 'standalone'][m.month()];
- }
- export var defaultLocaleMonthsShort = 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_');
- export function localeMonthsShort (m, format) {
- if (!m) {
- return isArray(this._monthsShort) ? this._monthsShort :
- this._monthsShort['standalone'];
- }
- return isArray(this._monthsShort) ? this._monthsShort[m.month()] :
- this._monthsShort[MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'][m.month()];
- }
- function handleStrictParse(monthName, format, strict) {
- var i, ii, mom, llc = monthName.toLocaleLowerCase();
- if (!this._monthsParse) {
- // this is not used
- this._monthsParse = [];
- this._longMonthsParse = [];
- this._shortMonthsParse = [];
- for (i = 0; i < 12; ++i) {
- mom = createUTC([2000, i]);
- this._shortMonthsParse[i] = this.monthsShort(mom, '').toLocaleLowerCase();
- this._longMonthsParse[i] = this.months(mom, '').toLocaleLowerCase();
- }
- }
- if (strict) {
- if (format === 'MMM') {
- ii = indexOf.call(this._shortMonthsParse, llc);
- return ii !== -1 ? ii : null;
- } else {
- ii = indexOf.call(this._longMonthsParse, llc);
- return ii !== -1 ? ii : null;
- }
- } else {
- if (format === 'MMM') {
- ii = indexOf.call(this._shortMonthsParse, llc);
- if (ii !== -1) {
- return ii;
- }
- ii = indexOf.call(this._longMonthsParse, llc);
- return ii !== -1 ? ii : null;
- } else {
- ii = indexOf.call(this._longMonthsParse, llc);
- if (ii !== -1) {
- return ii;
- }
- ii = indexOf.call(this._shortMonthsParse, llc);
- return ii !== -1 ? ii : null;
- }
- }
- }
- export function localeMonthsParse (monthName, format, strict) {
- var i, mom, regex;
- if (this._monthsParseExact) {
- return handleStrictParse.call(this, monthName, format, strict);
- }
- if (!this._monthsParse) {
- this._monthsParse = [];
- this._longMonthsParse = [];
- this._shortMonthsParse = [];
- }
- // TODO: add sorting
- // Sorting makes sure if one month (or abbr) is a prefix of another
- // see sorting in computeMonthsParse
- for (i = 0; i < 12; i++) {
- // make the regex if we don't have it already
- mom = createUTC([2000, i]);
- if (strict && !this._longMonthsParse[i]) {
- this._longMonthsParse[i] = new RegExp('^' + this.months(mom, '').replace('.', '') + '$', 'i');
- this._shortMonthsParse[i] = new RegExp('^' + this.monthsShort(mom, '').replace('.', '') + '$', 'i');
- }
- if (!strict && !this._monthsParse[i]) {
- regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
- this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
- }
- // test the regex
- if (strict && format === 'MMMM' && this._longMonthsParse[i].test(monthName)) {
- return i;
- } else if (strict && format === 'MMM' && this._shortMonthsParse[i].test(monthName)) {
- return i;
- } else if (!strict && this._monthsParse[i].test(monthName)) {
- return i;
- }
- }
- }
- // MOMENTS
- export function setMonth (mom, value) {
- var dayOfMonth;
- if (!mom.isValid()) {
- // No op
- return mom;
- }
- if (typeof value === 'string') {
- if (/^\d+$/.test(value)) {
- value = toInt(value);
- } else {
- value = mom.localeData().monthsParse(value);
- // TODO: Another silent failure?
- if (!isNumber(value)) {
- return mom;
- }
- }
- }
- dayOfMonth = Math.min(mom.date(), daysInMonth(mom.year(), value));
- mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
- return mom;
- }
- export function getSetMonth (value) {
- if (value != null) {
- setMonth(this, value);
- hooks.updateOffset(this, true);
- return this;
- } else {
- return get(this, 'Month');
- }
- }
- export function getDaysInMonth () {
- return daysInMonth(this.year(), this.month());
- }
- var defaultMonthsShortRegex = matchWord;
- export function monthsShortRegex (isStrict) {
- if (this._monthsParseExact) {
- if (!hasOwnProp(this, '_monthsRegex')) {
- computeMonthsParse.call(this);
- }
- if (isStrict) {
- return this._monthsShortStrictRegex;
- } else {
- return this._monthsShortRegex;
- }
- } else {
- if (!hasOwnProp(this, '_monthsShortRegex')) {
- this._monthsShortRegex = defaultMonthsShortRegex;
- }
- return this._monthsShortStrictRegex && isStrict ?
- this._monthsShortStrictRegex : this._monthsShortRegex;
- }
- }
- var defaultMonthsRegex = matchWord;
- export function monthsRegex (isStrict) {
- if (this._monthsParseExact) {
- if (!hasOwnProp(this, '_monthsRegex')) {
- computeMonthsParse.call(this);
- }
- if (isStrict) {
- return this._monthsStrictRegex;
- } else {
- return this._monthsRegex;
- }
- } else {
- if (!hasOwnProp(this, '_monthsRegex')) {
- this._monthsRegex = defaultMonthsRegex;
- }
- return this._monthsStrictRegex && isStrict ?
- this._monthsStrictRegex : this._monthsRegex;
- }
- }
- function computeMonthsParse () {
- function cmpLenRev(a, b) {
- return b.length - a.length;
- }
- var shortPieces = [], longPieces = [], mixedPieces = [],
- i, mom;
- for (i = 0; i < 12; i++) {
- // make the regex if we don't have it already
- mom = createUTC([2000, i]);
- shortPieces.push(this.monthsShort(mom, ''));
- longPieces.push(this.months(mom, ''));
- mixedPieces.push(this.months(mom, ''));
- mixedPieces.push(this.monthsShort(mom, ''));
- }
- // Sorting makes sure if one month (or abbr) is a prefix of another it
- // will match the longer piece.
- shortPieces.sort(cmpLenRev);
- longPieces.sort(cmpLenRev);
- mixedPieces.sort(cmpLenRev);
- for (i = 0; i < 12; i++) {
- shortPieces[i] = regexEscape(shortPieces[i]);
- longPieces[i] = regexEscape(longPieces[i]);
- }
- for (i = 0; i < 24; i++) {
- mixedPieces[i] = regexEscape(mixedPieces[i]);
- }
- this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
- this._monthsShortRegex = this._monthsRegex;
- this._monthsStrictRegex = new RegExp('^(' + longPieces.join('|') + ')', 'i');
- this._monthsShortStrictRegex = new RegExp('^(' + shortPieces.join('|') + ')', 'i');
- }