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mc_test/node_modules/moment/src/lib/units/month.js

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+import { get } from '../moment/get-set';
+import hasOwnProp from '../utils/has-own-prop';
+import { addFormatToken } from '../format/format';
+import {
+    addRegexToken,
+    match1to2,
+    match2,
+    matchWord,
+    regexEscape,
+    match1to2NoLeadingZero,
+} 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 '../utils/is-leap-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);
+});
+
+// PARSING
+
+addRegexToken('M', match1to2, match1to2NoLeadingZero);
+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 defaultLocaleMonths =
+        'January_February_March_April_May_June_July_August_September_October_November_December'.split(
+            '_'
+        ),
+    defaultLocaleMonthsShort =
+        'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_'),
+    MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s)+MMMM?/,
+    defaultMonthsShortRegex = matchWord,
+    defaultMonthsRegex = matchWord;
+
+export { defaultLocaleMonths, defaultLocaleMonthsShort };
+
+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 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) {
+    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;
+            }
+        }
+    }
+
+    var month = value,
+        date = mom.date();
+
+    date = date < 29 ? date : Math.min(date, daysInMonth(mom.year(), month));
+    void (mom._isUTC
+        ? mom._d.setUTCMonth(month, date)
+        : mom._d.setMonth(month, date));
+    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());
+}
+
+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;
+    }
+}
+
+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,
+        shortP,
+        longP;
+    for (i = 0; i < 12; i++) {
+        // make the regex if we don't have it already
+        mom = createUTC([2000, i]);
+        shortP = regexEscape(this.monthsShort(mom, ''));
+        longP = regexEscape(this.months(mom, ''));
+        shortPieces.push(shortP);
+        longPieces.push(longP);
+        mixedPieces.push(longP);
+        mixedPieces.push(shortP);
+    }
+    // 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);
+
+    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'
+    );
+}