root/as3/Utils/src/org/libspark/utils/DateUtil.as

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1 /*======================================================================*//**
2 *
3 * Utils for ActionScript 3.0
4 *
5 * @author       Copyright (c) 2007 Spark project.
6 * @version      1.0.0
7 *
8 * @see          http://utils.libspark.org/
9 * @see          http://www.libspark.org/
10 *
11 * Licensed under the Apache License, Version 2.0 (the "License");
12 * you may not use this file except in compliance with the License.
13 * You may obtain a copy of the License at
14 *
15 * http://www.apache.org/licenses/LICENSE-2.0
16 *
17 * Unless required by applicable law or agreed to in writing, software
18 * distributed under the License is distributed on an "AS IS" BASIS,
19 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
20 * either express or implied. See the License for the specific language
21 * governing permissions and limitations under the License.
22 *
23 *//*=======================================================================*/
24 package org.libspark.utils {
25         import flash.errors.IllegalOperationError;
26        
27         /**
28          * Date クラスのためのユーティリティクラスです
29          */
30         public class DateUtil {
31                
32                 /*======================================================================*//**
33                 * @private
34                 *//*=======================================================================*/
35                 public function DateUtil() {
36                         throw new IllegalOperationError( "DateUtil クラスはインスタンスを生成できません。" );
37                 }
38                
39                
40                
41                
42                
43                 /*======================================================================*//**
44                 * 対象となる Date オブジェクトの月の最大日数を返します。
45                 * @author       taka:nium
46                 * @param        date    最大日数を取得したい Date オブジェクトです。
47                 * @return                       最大日数です。
48                 *//*=======================================================================*/
49                 static public function getMaxDateLength( date:Date ):int {
50                         var newdate:Date = new Date( date );
51                         newdate.setMonth( date.getMonth() + 1 );
52                         newdate.setDate( 0 );
53                         return newdate.getDate();
54                 }
55        
56        
57         /**
58          * 指定の月の最初の曜日を調べます。
59          *
60          * @param       fullyear 西暦
61          * @param       month 月
62          * @author  michi at seyself.com
63          */
64         public static function getFirstDay(fullyear:uint,month:uint):uint
65         {
66             var tmp:Date = new Date(fullyear,month,1);
67             return tmp.getDay();
68         }
69        
70         /**
71          * うるう年かどうかを調べます.
72          *
73          * @param       fullyear 西暦
74          * @return  うるう年の場合はtrueを返します。
75          * @author  michi at seyself.com
76          */
77         public static function isLeap( fullyear:uint ):Boolean
78         {
79             var flag:Boolean = false;
80             if(((fullyear%4==0) && (fullyear%100!=0)) || (fullyear%400==0)) flag = true;
81             return flag;
82         }
83        
84         /**
85          * 西暦を和暦に変換します.
86          * 対応しているのは明治以降になります（1868年以降）
87          *
88          * @param       fullyear 西暦
89          * @return  和暦（例：H20）
90          * @author  michi at seyself.com
91          */
92         public static function convertJCalendar( fullyear:uint ):String
93         {
94             var gengou:Array = ["M", "T", "S", "H"];
95             var changeYear:Array = [1868, 1912, 1926, 1989];
96             var str:String = "" , reki:uint = 0;
97             var len:uint = changeYear.length;
98             for (var i:int = len - 1; i > 0; i--) {
99                 if (fullyear >= changeYear[i]) {
100                     str = gengou[i]; reki = fullyear - changeYear[i] + 1;
101                     break;
102                 }
103             }
104             if (str) {
105                 return str + reki;
106             }
107             return "" + fullyear;
108         }
109        
110         /**
111          * 曜日名を取得します. <br />
112                  * type の指定によって得られる値<br />
113          * 0 : SUNDAY, MONDAY, TUSEDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY<br />
114                  * 1 : Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday<br />
115                  * 2 : sunday, monday, tuesday, wednesday, thursday, friday, saturday<br />
116                  * 3 : SUN, MON, TUE, WED, THU, FRI, SAT<br />
117                  * 4 : Sun, Mon, Tue, Wed, Thu, Fri, Sat<br />
118                  * 5 : sun, mon, tue, wed, thu, fri, sat<br />
119                  * 6 : 日曜日, 月曜日, 火曜日, 水曜日, 木曜日, 金曜日, 土曜日<br />
120                  * 7 : 日, 月, 火, 水, 木, 金, 土<br />
121                  * 8 : 日曜, 月曜, 火曜, 水曜, 木曜, 金曜, 土曜<br />
122                  *
123          * @param       index 曜日インデックス値
124          * @param       type 取得する曜日名のタイプ（0から8まで）
125          * @return  曜日名
126          * @author  michi at seyself.com
127          */
128         public static function getWeekName( index:uint , type:uint=0 ):String
129         {
130             var week:Array;
131             if(type==0)      week = ["SUNDAY","MONDAY","TUSEDAY","WEDNESDAY","THURSDAY","FRIDAY","SATURDAY"];
132             else if(type==1) week = ["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];
133             else if(type==2) week = ["sunday","monday","tuesday","wednesday","thursday","friday","saturday"];
134             else if(type==3) week = ["SUN","MON","TUE","WED","THU","FRI","SAT"];
135             else if(type==4) week = ["Sun","Mon","Tue","Wed","Thu","Fri","Sat"];
136             else if(type==5) week = ["sun","mon","tue","wed","thu","fri","sat"];
137             else if(type==6) week = ["日曜日","月曜日","火曜日","水曜日","木曜日","金曜日","土曜日"];
138             else if(type==7) week = ["日","月","火","水","木","金","土"];
139             else if(type==8) week = ["日曜","月曜","火曜","水曜","木曜","金曜","土曜"];
140             else             week = ["Sun","Mon","Tue","Wed","Thu","Fri","Sat"];
141             return week[index];
142         }
143        
144         /**
145          * 月を示す文字列を返します. <br />
146                  * type の指定によって得られる値<br />
147          * 0 : JANUARY, FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST, SEPTEMBER, OCTOBER, NOVEMBER, DECEMBER<br />
148          * 1 : January, February, March, April, May, June, July, August, September, October, November, December<br />
149          * 2 : january, february, march, april, may, june, july, august, september, october, november, december<br />
150          * 3 : JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC<br />
151          * 4 : Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec<br />
152          * 5 : jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec<br />
153          * 6 : 1月, 2月, 3月, 4月, 5月, 6月, 7月, 8月, 9月, 10月, 11月, 12月<br />
154          * 7 : 睦月, 如月, 弥生, 卯月, 皐月, 水無月, 文月, 葉月, 長月, 神無月, 霜月, 師走<br />
155                  *
156          * @param       index 月
157          * @param       type 取得する月名のタイプ（0から7まで）
158          * @return  月名
159          * @author  michi at seyself.com
160          */
161         public static function getMonthName( index:uint , type:uint=0 ):String
162         {
163             var month:Array;
164             if(type==0)      month = ["JANUARY","FEBRUARY","MARCH","APRIL","MAY","JUNE","JULY","AUGUST","SEPTEMBER","OCTOBER","NOVEMBER","DECEMBER"];
165             else if(type==1) month = ["January","February","March","April","May","June","July","August","September","October","November","December"];
166             else if(type==2) month = ["january","february","march","april","may","june","july","august","september","october","november","december"];
167             else if(type==3) month = ["JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC"];
168             else if(type==4) month = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
169             else if(type==5) month = ["jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec"];
170             else if(type==6) month = ["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"];
171             else if(type==7) month = ["睦月","如月","弥生","卯月","皐月","水無月","文月","葉月","長月","神無月","霜月","師走"];
172             else             month = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
173             return month[index];
174         }
175        
176         /**
177          * 引数 date から相対的な日を表す文字列を返します。<br />
178                  * type の値は getWeekName のものと同じです<br />
179                  *
180          * @param       date Dateオブジェクト
181          * @param       type 取得する曜日名のタイプ（0から8まで）
182          * @return  曜日名/今日/明日
183          * @author  nagase at ngsdev.org
184          */
185         public static function getRelativeDateName( date:Date, type:uint=0 ):String
186         {
187                 var d1:Date = new Date();
188                 d1 = new Date(d1.getFullYear(),d1.getMonth(),d1.getDate());
189                 var d2:Date = new Date(date.getFullYear(),date.getMonth(),date.getDate());
190                 if(d1<d2||d1.getTime()-d2.getTime()>1000*60*60*24*7) return "";
191                 if(type>8||isNaN(type)) type = 0;
192                 var list:Array;
193                 switch(type) {
194                         case 0: case 3:
195                                 list = ["TODAY","YESTERDAY"]; break;
196                         case 1: case 4:
197                                 list = ["Today","Yesterday"]; break;
198                         case 2: case 5:
199                                 list = ["today","yesterday"]; break;
200                         case 6: case 7: case 8:
201                                 list = ["今日","昨日"]; break;
202                 }
203                 var diff:int = d1.getDate()-d2.getDate();
204                 if(diff<=1) return list[diff];
205                 return getWeekName( d2.getDay(), type );
206         }
207        
208        
209         }
210 }
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