dateUtils.js

/**
 * Module : Sparrow date util
 * Author : Kvkens(yueming@yonyou.com)
 * Date	  : 2016-08-06 13:37:20
 */

import {core} from '../core';
import {dateFormat} from '../util';
import {trans} from './i18n';
var u = {};
u.date = {

	/**
	 * 多语言处理
	 */
	//TODO 后续放到多语文件中
	_dateLocale: {
		'zh-CN': {
			months: '一月_二月_三月_四月_五月_六月_七月_八月_九月_十月_十一月_十二月'.split('_'),
			monthsShort: '1月_2月_3月_4月_5月_6月_7月_8月_9月_10月_11月_12月'.split('_'),
			weekdays: '星期日_星期一_星期二_星期三_星期四_星期五_星期六'.split('_'),
			weekdaysShort: '周日_周一_周二_周三_周四_周五_周六'.split('_'),
			weekdaysMin: '日_一_二_三_四_五_六'.split('_')
		},
		'en-US': {
			months: 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_'),
			monthsShort: 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_'),
			weekdays: 'Sunday_Monday_Tuesday_Wednesday_Thurday_Friday_Saturday'.split('_'),
			weekdaysShort: 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_'),
			weekdaysMin: 'S_M_T_W_T_F_S'.split('_')
		}
	},
	_jsonLocale:{
		months: trans('date.months', "一月\n二月\n三月\n四月\n五月\n六月\n七月\n八月\n九月\n十月\n十一月\n十二月").split('\n'),
		monthsShort: trans('date.monthsShort', "1月\n2月\n3月\n4月\n5月\n6月\n7月\n8月\n9月\n10月\n11月\n12月").split('\n'),
		weekdays: trans('date.weekdays', "星期日\n星期一\n星期二\n星期三\n星期四\n星期五\n星期六").split('\n'),
		weekdaysShort: trans('date.weekdaysShort', "周日\n周一\n周二\n周三\n周四\n周五\n周六").split('\n'),
		weekdaysMin: trans('date.weekdaysMin', "日\n一\n二\n三\n四\n五\n六").split('\n'),
		defaultMonth: ["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"]
	},

	_formattingTokens: /(\[[^\[]*\])|(\\)?(Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Q|YYYY|YY|e|E|a|A|hh?|HH?|mm?|ss?|S{1,4}|x|X|zz?|ZZ?|.)/g,

	leftZeroFill: function(number, targetLength, forceSign) {
		var output = '' + Math.abs(number),
			sign = number >= 0;
		while(output.length < targetLength) {
			output = '0' + output;
		}
		return(sign ? (forceSign ? '+' : '') : '-') + output;
	},

	_formats: {
		//year
		YY: function(date) {
			return u.date.leftZeroFill(date.getFullYear() % 100, 2);
		},
		YYYY: function(date) {
			return date.getFullYear();
		},
		//month
		M: function(date) {
			return date.getMonth() + 1;
		},
		MM: function(date) {
			var m = u.date._formats.M(date);
			return u.date.leftZeroFill(m, 2);
		},
		MMM: function(date, language) {
			var m = date.getMonth();
			// return u.date._dateLocale[language].monthsShort[m];
			return u.date._jsonLocale.monthsShort[m];
		},
		MMMM: function(date, language) {
			var m = date.getMonth();
			// return u.date._dateLocale[language].months[m];
			return u.date._jsonLocale.months[m];
		},
		//date
		D: function(date) {
			return date.getDate();
		},
		DD: function(date) {
			var d = u.date._formats.D(date);
			return u.date.leftZeroFill(d, 2);
		},
		// weekday
		d: function(date) {
			return date.getDay();
		},
		dd: function(date, language) {
			var d = u.date._formats.d(date);
			// return u.date._dateLocale[language].weekdaysMin[d];
			return u.date._jsonLocale.weekdaysMin[d];
		},
		ddd: function(date, language) {
			var d = u.date._formats.d(date);
			// return u.date._dateLocale[language].weekdaysShort[d];
			return u.date._jsonLocale.weekdaysShort[d];
		},
		dddd: function(date, language) {
			var d = u.date._formats.d(date);
			// return u.date._dateLocale[language].weekdays[d];
			return u.date._jsonLocale.weekdays[d];
		},
		// am pm
		a: function(date) {
			if(date.getHours() > 12) {
				return 'pm';
			} else {
				return 'am';
			}
		},
		//hour
		h: function(date) {
			var h = date.getHours();
			h = h > 12 ? h - 12 : h;
			return h
		},
		hh: function(date) {
			var h = u.date._formats.h(date);
			return u.date.leftZeroFill(h, 2);
		},
		H: function(date) {
			return date.getHours();
		},
		HH: function(date) {
			return u.date.leftZeroFill(date.getHours(), 2);
		},
		// minutes
		m: function(date) {
			return date.getMinutes();
		},
		mm: function(date) {
			return u.date.leftZeroFill(date.getMinutes(), 2);
		},
		//seconds
		s: function(date) {
			return date.getSeconds();
		},
		ss: function(date) {
			return u.date.leftZeroFill(date.getSeconds(), 2);
		}
	},

	/**
	 * 日期格式化
	 * @param date
	 * @param formatString
	 */
	format: function(date, formatString, language) {
		if(!date) return ''; // renturn date 改为 return '',因：setFormat初始会赋值为undefined,造成二次选择报错
		var array = formatString.match(u.date._formattingTokens),
			i, length, output = '';
		var _date = u.date.getDateObj(date);
		if(!_date) return date;
		language = language || core.getLanguages();
		for(i = 0, length = array.length; i < length; i++) {
			if(u.date._formats[array[i]]) {
				output += u.date._formats[array[i]](_date, language);
			} else {
				output += array[i];
			}
		}
		return output;
	},

	_addOrSubtract: function(date, period, value, isAdding) {
		var times = date.getTime(),
			d = date.getDate(),
			m = date.getMonth(),
			_date = u.date.getDateObj(date);
		if(period === 'ms') {
			times = times + value * isAdding;
			_date.setTime(times);
		} else if(period == 's') {
			times = times + value * 1000 * isAdding;
			_date.setTime(times);
		} else if(period == 'm') {
			times = times + value * 60000 * isAdding;
			_date.setTime(times);
		} else if(period == 'h') {
			times = times + value * 3600000 * isAdding;
			_date.setTime(times);
		} else if(period == 'd') {
			d = d + value * isAdding;
			_date.setDate(d);
		} else if(period == 'w') {
			d = d + value * 7 * isAdding;
			_date.setDate(d);
		} else if(period == 'M') {
			m = m + value * isAdding;
			_date.setMonth(m);
		} else if(period == 'y') {
			m = m + value * 12 * isAdding;
			_date.setMonth(m);
		}
		return _date;
	},

	add: function(date, period, value) {
		return u.date._addOrSubtract(date, period, value, 1);
	},
	sub: function(date, period, value) {
		return u.date._addOrSubtract(date, period, value, -1);
	},
	getDateObj: function(value) {
		if(!value || typeof value == 'undefined') return value;
		var dateFlag = false;
		var _date = new Date(dateFormat(value));
		if(isNaN(_date)) {
			// IE的话对"2016-2-13 12:13:22"进行处理
			var index1, index2, index3, s1, s2, s3, s4;
			if (value.indexOf) {
				index1 = value.indexOf('-');
				index2 = value.indexOf(':');
				index3 = value.indexOf(' ');
				if (index1 > 0 || index2 > 0 || index3 > 0) {
					_date = new Date();
					if (index3 > 0) {
						s3 = value.split(' ');
						s1 = s3[0].split('-');
						s2 = s3[1].split(':');
						s4 = s3[2];
					} else if (index1 > 0) {
						s1 = value.split('-');
					} else if (index2 > 0) {
						s2 = value.split(':');
					}
					if (s1 && s1.length > 0) {
						_date.setYear(s1[0]);
						_date.setMonth(parseInt(s1[1] - 1));
						_date.setDate(s1[2] ? s1[2] : 0);
						dateFlag = true;
					}
					if (s2 && s2.length > 0) {
						//解决ie和firefox等时间pm直接变am问题
						if(s4=="pm"){
							s2[0]=s2[0]-(-12);
						}
						_date.setHours(s2[0] ? s2[0] : 0);
						_date.setMinutes(s2[1] ? s2[1] : 0);
						_date.setSeconds(s2[2] ? s2[2] : 0);
						dateFlag = true;
					}
				} else {
					_date = new Date(parseInt(value));
					if (isNaN(_date)) {
						throw new TypeError('invalid Date parameter');
					} else {
						dateFlag = true;
					}
				}
			}
		} else {
			dateFlag = true;
		}
		if(dateFlag)
			return _date;
		else
			return null;
	}

};

var date = u.date;
export {
	date
};