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package tim.prune.function.filesleuth.data;
import java.util.Calendar;
public class Date
{
private final int _year;
private final int _month; // 1 to 12
private final int _day; // 1 to 31
/** Constructor */
Date(int inYear, int inMonth, int inDay)
{
_year = inYear;
_month = inMonth;
_day = inDay;
}
/** @return true if the given character is a recognised date separator */
static boolean isSeparator(char inChar) {
return " .-:".indexOf(inChar) >= 0;
}
static Date parseString(String inValue)
{
String value = (inValue == null ? "" : inValue.trim());
if (value.length() != 10) {
return null;
}
try
{
final int year = Integer.parseInt(value.substring(0, 4));
final int month = Integer.parseInt(value.substring(5, 7));
final int day = Integer.parseInt(value.substring(8));
if (year >= 1000 && month >= 1 && month <= 12
&& day >= 1 && day <= getDaysInMonth(year, month))
{
return new Date(year, month, day);
}
}
catch (NumberFormatException ignored) {}
return null;
}
/** Return number of days in the specified month */
static int getDaysInMonth(int year, int month)
{
if (month >= 1 && month <= 12)
{
if (month == 2)
{
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, year);
cal.set(Calendar.MONTH, month); // gives us the month _after_ the one we want
cal.set(Calendar.DATE, 1); // set to the first of the next month, then subtract a day
cal.add(Calendar.DATE, -1);
return cal.get(Calendar.DAY_OF_MONTH);
}
else
{
final int[] daysInMonth = new int[]{0, 31, 0, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
return daysInMonth[month];
}
}
return 1; // actually an error but 1 is ok
}
public int getYear() {
return _year;
}
public int getMonth() {
return _month;
}
public int getDay() {
return _day;
}
public String toString() {
return String.format("%d-%02d-%02d", _year, _month, _day);
}
public boolean isAfter(Date inOther) {
return inOther == null || toString().compareTo(inOther.toString()) > 0;
}
public boolean isValid()
{
return _year >= 1000 && _year <= 9999
&& _month >= 1 && _month <= 12
&& _day >= 1 && _day <= getDaysInMonth(_year, _month);
}
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
Date date = (Date) o;
return _year == date._year && _month == date._month && _day == date._day;
}
}
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