import zeroFill from '../utils/zero-fill'; import isFunction from '../utils/is-function';
export var formattingTokens = /([[^[]*])|(\)?([Hh]mm(ss)?|Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w?|W?|Qo?|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|kk?|mm?|ss?|S{1,9}|x|X|zz?|ZZ?|.)/g;
var localFormattingTokens = /([[^[]*])|(\)?(LTS|LT|LL?L?L?|l{1,4})/g;
var formatFunctions = {};
export var formatTokenFunctions = {};
// token: 'M' // padded: ['MM', 2] // ordinal: 'Mo' // callback: function () { this.month() + 1 } export function addFormatToken (token, padded, ordinal, callback) {
var func = callback; if (typeof callback === 'string') { func = function () { return this[callback](); }; } if (token) { formatTokenFunctions[token] = func; } if (padded) { formatTokenFunctions[padded[0]] = function () { return zeroFill(func.apply(this, arguments), padded[1], padded[2]); }; } if (ordinal) { formatTokenFunctions[ordinal] = function () { return this.localeData().ordinal(func.apply(this, arguments), token); }; }
}
function removeFormattingTokens(input) {
if (input.match(/\[[\s\S]/)) { return input.replace(/^\[|\]$/g, ''); } return input.replace(/\\/g, '');
}
function makeFormatFunction(format) {
var array = format.match(formattingTokens), i, length; for (i = 0, length = array.length; i < length; i++) { if (formatTokenFunctions[array[i]]) { array[i] = formatTokenFunctions[array[i]]; } else { array[i] = removeFormattingTokens(array[i]); } } return function (mom) { var output = '', i; for (i = 0; i < length; i++) { output += isFunction(array[i]) ? array[i].call(mom, format) : array[i]; } return output; };
}
// format date using native date object export function formatMoment(m, format) {
if (!m.isValid()) { return m.localeData().invalidDate(); } format = expandFormat(format, m.localeData()); formatFunctions[format] = formatFunctions[format] || makeFormatFunction(format); return formatFunctions[format](m);
}
export function expandFormat(format, locale) {
var i = 5; function replaceLongDateFormatTokens(input) { return locale.longDateFormat(input) || input; } localFormattingTokens.lastIndex = 0; while (i >= 0 && localFormattingTokens.test(format)) { format = format.replace(localFormattingTokens, replaceLongDateFormatTokens); localFormattingTokens.lastIndex = 0; i -= 1; } return format;
}