일반 음력 계산 로직

package util;

public class UtilLunal {

  public UtilLunal() {}

  public static String getLunal(int year, int month, int day) {
    String[] MonthData =
      {
        "1212122322121",
        "1212121221220",
        "1121121222120",
        "2112132122122",
        "2112112121220",
        "2121211212120",
        "2212321121212",
        "2122121121210",
        "2122121212120",
        "1232122121212",
        "1212121221220",
        "1121123221222",
        "1121121212220",
        "1212112121220",
        "2121231212121",
        "2221211212120",
        "1221212121210",
        "2123221212121",
        "2121212212120",
        "1211212232212",
        "1211212122210",
        "2121121212220",
        "1212132112212",
        "2212112112210",
        "2212211212120",
        "1221412121212",
        "1212122121210",
        "2112212122120",
        "1231212122212",
        "1211212122210",
        "2121123122122",
        "2121121122120",
        "2212112112120",
        "2212231212112",
        "2122121212120",
        "1212122121210",
        "2132122122121",
        "2112121222120",
        "1211212322122",
        "1211211221220",
        "2121121121220",
        "2122132112122",
        "1221212121120",
        "2121221212110",
        "2122321221212",
        "1121212212210",
        "2112121221220",
        "1231211221222",
        "1211211212220",
        "1221123121221",
        "2221121121210",
        "2221212112120",
        "1221241212112",
        "1212212212120",
        "1121212212210",
        "2114121212221",
        "2112112122210",
        "2211211412212",
        "2211211212120",
        "2212121121210",
        "2212214112121",
        "2122122121120",
        "1212122122120",
        "1121412122122",
        "1121121222120",
        "2112112122120",
        "2231211212122",
        "2121211212120",
        "2212121321212",
        "2122121121210",
        "2122121212120",
        "1212142121212",
        "1211221221220",
        "1121121221220",
        "2114112121222",
        "1212112121220",
        "2121211232122",
        "1221211212120",
        "1221212121210",
        "2121223212121",
        "2121212212120",
        "1211212212210",
        "2121321212221",
        "2121121212220",
        "1212112112210",
        "2223211211221",
        "2212211212120",
        "1221212321212",
        "1212122121210",
        "2112212122120",
        "1211232122212",
        "1211212122210",
        "2121121122210",
        "2212312112212",
        "2212112112120",
        "2212121232112",
        "2122121212110",
        "2212122121210",
        "2112124122121",
        "2112121221220",
        "1211211221220",
        "2121321122122",
        "2121121121220",
        "2122112112322",
        "1221212112120",
        "1221221212110",
        "2122123221212",
        "1121212212210",
        "2112121221220",
        "1211231212222",
        "1211211212220",
        "1221121121220",
        "1223212112121",
        "2221212112120",
        "1221221232112",
        "1212212122120",
        "1121212212210",
        "2112132212221",
        "2112112122210",
        "2211211212210",
        "2221321121212",
        "2212121121210",
        "2212212112120",
        "1232212122112",
        "1212122122120",
        "1121212322122",
        "1121121222120",
        "2112112122120",
        "2211231212122",
        "2121211212120",
        "2122121121210",
        "2124212112121",
        "2122121212120",
        "1212121223212",
        "1211212221220",
        "1121121221220",
        "2112132121222",
        "1212112121220",
        "2121211212120",
        "2122321121212",
        "1221212121210",
        "2121221212120",
        "1232121221212",
        "1211212212210",
        "2121123212221",
        "2121121212220",
        "1212112112220",
        "1221231211221",
        "2212211211220",
        "1212212121210",
        "2123212212121",
        "2112122122120",
        "1211212322212",
        "1211212122210",
        "2121121122120",
        "2212114112122",
        "2212112112120",
        "2212121211210",
        "2212232121211",
        "2122122121210",
        "2112122122120",
        "1231212122212",
        "1211211221220",
        "2121121321222",
        "2121121121220",
        "2122112112120",
        "2122141211212",
        "1221221212110",
        "2121221221210",
        "2114121221221" };

    int[] currentDate = new int[162];
    int[] MonthAll = { 31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };

    int dateAll = 0;
    int currentDateAll = 0;
    int currentYear = 0;

    int tempDate = 0;
    int tempDate0 = 0;
    int m1 = 0;
    int m2 = 0;
    int JCOUNT = 0;

    for (int i = 0; i < 162; i++) {
      currentDate[i] = 0;
      for (int j = 0; j <= 12; j++) {
        if (MonthData[i].substring(j, j + 1).equals("1")
          || MonthData[i].substring(j, j + 1).equals("3"))
          currentDate[i] = currentDate[i] + 29;
        else if (
          MonthData[i].substring(j, j + 1).equals("2")
            || MonthData[i].substring(j, j + 1).equals("4"))
          currentDate[i] = currentDate[i] + 30;
      }
    }
    dateAll = 1880 * 365 + 1880 / 4 - 1880 / 100 + 1880 / 400 + 30;
    currentYear = year - 1;
    currentDateAll = currentYear * 365 + currentYear / 4 - currentYear / 100 + currentYear / 400;
    if (year % 400 == 0 || (year % 100 != 0 && year % 4 == 0))
      MonthAll[1] = 29;
    else
      MonthAll[1] = 28;

    if (day <= MonthAll[month - 1])
      for (int i = 0; i < month - 1; i++) {
        currentDateAll = currentDateAll + MonthAll[i];
      }
    currentDateAll = currentDateAll + day;

    tempDate = currentDateAll - dateAll + 1;

    tempDate0 = currentDate[0];
    int thisdate = 0;
    while (tempDate > tempDate0) {
      tempDate0 = tempDate0 + currentDate[thisdate + 1];
      thisdate++;
    }
    year = thisdate + 1881;

    tempDate0 = tempDate0 - currentDate[thisdate];
    tempDate = tempDate - tempDate0;

    if (MonthData[thisdate].substring(12).equals("0"))
      JCOUNT = 11;
    else
      JCOUNT = 12;
    m2 = 0;
    for (int j = 0; j <= JCOUNT; j++) {
      if (Integer.parseInt(MonthData[thisdate].substring(j, j + 1)) <= 2) {
        m2 = m2 + 1;
        m1 = Integer.parseInt(MonthData[thisdate].substring(j, j + 1)) + 28;
      } else
        m1 = Integer.parseInt(MonthData[thisdate].substring(j, j + 1)) + 26;
      if (tempDate <= m1) {
        break;
      }
      tempDate = tempDate - m1;
    }
    month = m2;
    day = tempDate;
    return month + "." + day;
  }
}