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* implement julian day handling

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* more get/ set functions, operators
* date until 1582 are handled in julian calendar
* date above 1582 are handled in gregorian calendar



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27264 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Karsten Heimrich
2008-09-01 13:11:29 +00:00
parent 8bd8964052
commit de13e4c0bd
2 changed files with 255 additions and 107 deletions
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headers/private/shared/DateTime.h
+25
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@@ -47,9 +47,16 @@ class BDate {
~BDate();
bool IsValid() const;
bool IsValid(const BDate& date) const;
bool IsValid(int32 year, int32 month, int32 day) const;
static BDate CurrentDate(time_type type);
BDate Date() const;
bool SetDate(const BDate& date);
bool SetDate(int32 year, int32 month, int32 day);
void GetDate(int32* year, int32* month, int32* day);
void AddDays(int32 days);
void AddYears(int32 years);
@@ -58,6 +65,7 @@ class BDate {
int32 Day() const;
int32 Year() const;
int32 Month() const;
int32 Difference(const BDate& date) const;
int32 DayOfWeek() const;
int32 DayOfYear() const;
@@ -74,6 +82,23 @@ class BDate {
BString LongDayName(int32 day) const;
BString LongMonthName(int32 month) const;
int32 DateToJulianDay() const;
static BDate JulianDayToDate(int32 julianDay);
bool operator!=(const BDate& date) const;
bool operator==(const BDate& date) const;
bool operator<(const BDate& date) const;
bool operator<=(const BDate& date) const;
bool operator>(const BDate& date) const;
bool operator>=(const BDate& date) const;
private:
int32 _DaysInMonth(int32 year, int32 month) const;
bool _SetDate(int32 year, int32 month, int32 day);
int32 _DateToJulianDay(int32 year, int32 month, int32 day) const;
private:
int32 fDay;
int32 fYear;