//# __________ PROTOCOL :: MISC __________ #//
/**
* Determine the difference between two dates. The resultant
* array contains three elements { years, months, days }.
*/
public static int[] Difference(JwDate fromDate, JwDate toDate)
{
if ( fromDate.GetOrdinal() >= toDate.GetOrdinal() )
return new int[]
{
0, 0, 0
};
int fromYear = fromDate.GetYear();
int fromMonth = fromDate.GetMonth();
int fromDay = fromDate.GetDay();
int toYear = toDate.GetYear();
int toMonth = toDate.GetMonth();
int toDay = toDate.GetDay();
int diffYears = toYear - fromYear;
int diffMonths = toMonth - fromMonth;
int diffDays = toDay - fromDay;
if ( diffDays < 0 )
{
diffDays += GetDaysInYearMonth(fromYear, fromMonth);
diffMonths--;
}
if ( diffMonths < 0 )
{
diffMonths += 12;
diffYears--;
}
if ( fromYear < 0 && toYear > 0 ) diffYears--;
if ( diffYears < 0 )
{
diffYears = 0;
diffMonths = 0;
diffDays = 0;
}
return new int[] {diffYears, diffMonths, diffDays};
}
//# __________ PROTOCOL :: FORMAT __________ #//
/**
* I provide a very simple, and non-optimized, facility for formatting
* dates in a variety of formats. Valid format codes are:
* {d} : day of month (1-31)
* {dd} : day of month (01-31)
* {ddd} : weekday abbreviation (Sun-Sat)
* {dddd} : weekday name (Sunday-Saturday)
* {m} : month (1-12)
* {mm} : month (01-12)
* {mmm} : month abbreviation (Jan-Dec)
* {mmmm} : month name (January-December)
* {yy} : year (00-99)
* {yyyy} : year (1800-9999)
*/
public static String Format(JwDate d, String format)
{
String s = format;
s = JwUtility.ReplaceAll(s, "{mmmm}", JwDateUtility.GetMonthName(d.GetMonth()));
s = JwUtility.ReplaceAll(s, "{mmm}", JwDateUtility.GetMonthAbbreviation(d.GetMonth()));
s = JwUtility.ReplaceAll(s, "{mm}", Pad2(d.GetMonth()));
s = JwUtility.ReplaceAll(s, "{m}", d.GetMonth() + "");
s = JwUtility.ReplaceAll(s, "{dddd}", JwDateUtility.GetDayOfWeekName(d.GetDayOfWeek()));
s = JwUtility.ReplaceAll(s, "{ddd}", JwDateUtility.GetDayOfWeekAbbreviation(d.GetDayOfWeek()));
s = JwUtility.ReplaceAll(s, "{dd}", Pad2(d.GetDay()));
s = JwUtility.ReplaceAll(s, "{d}", d.GetDay() + "");
s = JwUtility.ReplaceAll(s, "{yyyy}", d.GetYear() + "");
s = JwUtility.ReplaceAll(s, "{yy}", Pad2(GetShortYear(d)));
return s;
}
/**
* Format a date, e.g.: Jan 31, 1985 -> 19850131.
*/
public static String Format_yyyymmdd(JwDate d)
{
return "" +
Pad4(d.GetYear()) +
Pad2(d.GetMonth()) +
Pad2(d.GetDay());
}
/**
* Format a date, e.g.: Jan 31, 1985 -> 1/31/1985
*/
public static String Format_m_dd_yy(JwDate d)
{
return "" +
d.GetMonth() +
JwTimeConstants.DATE_SEPARATOR +
Pad2(d.GetDay()) +
JwTimeConstants.DATE_SEPARATOR +
Pad2(GetShortYear(d));
}
