/**
* Copyright (c)2010-2011 Enterprise Website Content Management System(EWCMS), All rights reserved.
* EWCMS PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
* http://www.ewcms.com
*/
package com.ewcms.plugin.notes.util;
import java.util.Calendar;
import java.util.Date;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* 计算农历时间
*
* @author wu_zhijun
*/
public class Lunar {
protected static final Logger logger = LoggerFactory.getLogger(Lunar.class);
private static int monCyl, dayCyl, yearCyl;
private static int year, month, day;
private static boolean isLeap;
private static int[] lunarInfo = { 0x04bd8, 0x04ae0, 0x0a570, 0x054d5,
0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2, 0x04ae0,
0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2,
0x095b0, 0x14977, 0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40,
0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970, 0x06566, 0x0d4a0,
0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7,
0x0c950, 0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0,
0x092d0, 0x0d2b2, 0x0a950, 0x0b557, 0x06ca0, 0x0b550, 0x15355,
0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0,
0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263,
0x0d950, 0x05b57, 0x056a0, 0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0,
0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6, 0x095b0,
0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46,
0x0ab60, 0x09570, 0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50,
0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0, 0x0c960, 0x0d954,
0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0,
0x0cab5, 0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0,
0x0a5b0, 0x15176, 0x052b0, 0x0a930, 0x07954, 0x06aa0, 0x0ad50,
0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,
0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6,
0x0d250, 0x0d520, 0x0dd45, 0x0b5a0, 0x056d0, 0x055b2, 0x049b0,
0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0 };
private static String[] Gan = { "甲", "乙", "丙", "丁", "戊", "己", "庚", "辛",
"壬", "癸" };
private static String[] Zhi = { "子", "丑", "寅", "卯", "辰", "巳", "午", "未",
"申", "酉", "戌", "亥" };
private static String[] Animals = { "鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊",
"猴", "鸡", "狗", "猪" };
private static String[] nStr1 = { "日", "一", "二", "三", "四", "五", "六", "七",
"八", "九", "十" };
private static String[] nStr2 = { "初", "十", "廿", "卅", " " };
private static String[] monthNong = { "正", "正", "二", "三", "四", "五", "六",
"七", "八", "九", "十", "十一", "十二" };
private static String[] yearName = { "零", "壹", "贰", "叁", "肆", "伍", "陆",
"柒", "捌", "玖" };
public Lunar() {
}
// 农历 y年的总天数
private static int lYearDays(int y) {
int i;
int sum = 348; // 29*12
for (i = 0x8000; i > 0x8; i >>= 1) {
// OurLog.debug("i="+i);
sum += (lunarInfo[y - 1900] & i) == 0 ? 0 : 1; // 大月+1天
}
return (sum + leapDays(y)); // +闰月的天数
}
// 农历 y年闰月的天数
private static int leapDays(int y) {
if (leapMonth(y) != 0)
return ((lunarInfo[y - 1900] & 0x10000) == 0 ? 29 : 30);
else
return (0);
}
// 农历 y年闰哪个月 1-12 , 没闰传回 0
private static int leapMonth(int y) {
return (lunarInfo[y - 1900] & 0xf);
}
// 农历 y年m月的总天数
private static int monthDays(int y, int m) {
return ((lunarInfo[y - 1900] & (0x10000 >> m)) == 0 ? 29 : 30);
}
// 算出农历, 传入日期物件, 返回农历日期物件
// 属性有 .year .month .day .isLeap .yearCyl .dayCyl .monCyl
private static void Lunar1(Date objDate) {
int i, leap = 0, temp = 0;
// int monCyl,dayCyl,yearCyl;
// int year,month,day;
// boolean isLeap;
Calendar cl = Calendar.getInstance();
cl.set(1900, 0, 31); // 1900-01-31是农历1900年正月初一
Date baseDate = cl.getTime();
// 1900-01-31是农历1900年正月初一
int offset = (int) ((objDate.getTime() - baseDate.getTime()) / 86400000); // 天数(86400000=24*60*60*1000)
dayCyl = offset + 40; // 1899-12-21是农历1899年腊月甲子日
monCyl = 14; // 1898-10-01是农历甲子月
// 得到年数
for (i = 1900; i < 2050 && offset > 0; i++) {
temp = lYearDays(i); // 农历每年天数
offset -= temp;
monCyl += 12;
}
if (offset < 0) {
offset += temp;
i--;
monCyl -= 12;
}
year = i; // 农历年份
yearCyl = i - 1864; // 1864年是甲子年
leap = leapMonth(i); // 闰哪个月
isLeap = false;
for (i = 1; i < 13 && offset > 0; i++) {
// 闰月
if (leap > 0 && i == (leap + 1) && isLeap == false) {
--i;
isLeap = true;
temp = leapDays(year);
} else {
temp = monthDays(year, i);
}
// 解除闰月
if (isLeap == true && i == (leap + 1))
isLeap = false;
offset -= temp;
if (isLeap == false)
monCyl++;
}
if (offset == 0 && leap > 0 && i == leap + 1)
if (isLeap) {
isLeap = false;
} else {
isLeap = true;
--i;
--monCyl;
}
if (offset < 0) {
offset += temp;
--i;
--monCyl;
}
month = i; // 农历月份
day = offset + 1; // 农历天份
}
private static int getYear() {
return (year);
}
private static int getMonth() {
return (month);
}
private static int getDay() {
return (day);
}
private static int getMonCyl() {
return (monCyl);
}
private static int getYearCyl() {
return (yearCyl);
}
private static int getDayCyl() {
return (dayCyl);
}
private static boolean getIsLeap() {
return (isLeap);
}
// 传入 offset 返回干支, 0=甲子
private static String cyclical(int num) {
return (Gan[num % 10] + Zhi[num % 12]);
}
// 中文日期
public static String cDay(int d) {
String s;
switch (d) {
case 10:
s = "初十";
break;
case 20:
s = "二十";
break;
case 30:
s = "三十";
break;
default:
s = nStr2[(int) (d / 10)];// 取商
s += nStr1[d % 10];// 取余
}
return (s);
}
private static String cYear(int y) {
String s = "";
int d;
while (y > 0) {
d = y % 10;
y = (y - d) / 10;
s = yearName[d] + s;
}
return (s);
}
public static String getLunar(String year, String month, String day) {
Date sDObj;
String s;
int SY, SM, SD;
int sy;
SY = Integer.parseInt(year);
SM = Integer.parseInt(month);
SD = Integer.parseInt(day);
sy = (SY - 4) % 12;
logger.debug("SY=" + SY + "SM=" + SM + "SD=" + SD + "sy=" + sy);
Calendar cl = Calendar.getInstance();
cl.set(SY, SM - 1, SD);
sDObj = cl.getTime();
// 日期
Lunar1(sDObj); // 农历
s = "农历 " + "【" + Animals[sy] + "】" + cYear(getYear()) + "年" + " ";
s += (getIsLeap() ? "闰" : "") + monthNong[getMonth()] + "月"
+ (monthDays(getYear(), getMonth()) == 29 ? "小" : "大");
s += cDay(getDay()) + " ";
s += cyclical(getYearCyl()) + "年" + cyclical(getMonCyl()) + "月"
+ cyclical(getDayCyl()) + "日";
return s;
}
public static String getLunarDay(int year, int month, int day) {
Calendar cl = Calendar.getInstance();
cl.set(year, month - 1, day);
Date sDObj = cl.getTime();
Lunar1(sDObj);
String dayValue = cDay(getDay());
if (dayValue.equals("初一"))
return monthNong[getMonth()] + "月";
return dayValue;
}
}