-/* $Id$ */
+/* $Id$
+
+This file is part of libmspcore
+Copyright © 2006 Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+
+#include <cstdlib>
#include <sstream>
#include <iomanip>
-#include <msp/error.h>
+#include "../core/except.h"
#include "datetime.h"
#include "timestamp.h"
+#include "units.h"
using namespace std;
namespace {
-inline bool is_leap_year(int32_t y)
+inline bool is_leap_year(int y)
{ return y%4==0 && (y%100 || y%400==0); }
-inline uint8_t month_days(int32_t y, uint8_t m)
+inline unsigned char month_days(int y, unsigned char m)
{
switch(m)
{
}
-#include <iostream>
-using namespace std;
-
namespace Msp {
namespace Time {
-DateTime::DateTime(const TimeStamp &ts):
- year(1970),
- month(1),
- mday(1),
- hour(0),
- minute(0),
- second(0),
- usec(0)
+DateTime::DateTime(const TimeStamp &ts)
{
- add_raw(ts.raw());
+ init(ts);
+}
+
+DateTime::DateTime(const TimeStamp &ts, const TimeZone &tz)
+{
+ init(ts);
+ convert_timezone(tz);
+}
+
+DateTime::DateTime(int y, unsigned char m, unsigned char d)
+{
+ init(y, m, d, 0, 0, 0, 0);
+}
+
+DateTime::DateTime(int y, unsigned char m, unsigned char d, unsigned char h, unsigned char n, unsigned char s)
+{
+ init(y, m, d, h, n, s, 0);
+}
+
+DateTime::DateTime(int y, unsigned char m, unsigned char d, unsigned char h, unsigned char n, unsigned char s, unsigned u)
+{
+ init(y, m, d, h, n, s, u);
}
-DateTime::DateTime(int32_t y, uint8_t m, uint8_t d):
- year(y),
- month(m),
- mday(d),
- hour(0),
- minute(0),
- second(0),
- usec(0)
-{ }
-
-void DateTime::add_days(int32_t days)
+void DateTime::add_days(int days)
{
- unsigned new_year=year;
+ int new_year=year;
/* Leap years have a 400 year cycle, so any 400 consecutive years have a
- constant number of days */
+ constant number of days (400*365+97=146097) */
new_year+=days/146097*400;
days%=146097;
new_year+=cycles*4;
// See how many non-leap-years we counted as leap years and reclaim the lost days
+ // XXX This breaks with negative years
unsigned missed_leap_days=((year-fudge)%100+cycles*4)/100;
if((year-fudge)%400+cycles*4>=400)
--missed_leap_days;
// We passed a leap year - decrement days
if(days==0)
{
+ days=is_leap_year(new_year-fudge)?365:364;
--new_year;
- days=is_leap_year(new_year)?365:364;
}
else
--days;
mday+=days;
}
+void DateTime::set_timezone(const TimeZone &tz)
+{
+ zone=tz;
+}
+
+void DateTime::convert_timezone(const TimeZone &tz)
+{
+ add_raw((zone.get_offset()-tz.get_offset()).raw());
+ zone=tz;
+}
+
DateTime DateTime::operator+(const TimeDelta &td) const
{
DateTime dt(*this);
return *this;
}
+DateTime DateTime::operator-(const TimeDelta &td) const
+{
+ DateTime dt(*this);
+ dt.add_raw(-td.raw());
+ return dt;
+}
+
+DateTime &DateTime::operator-=(const TimeDelta &td)
+{
+ add_raw(-td.raw());
+ return *this;
+}
+
int DateTime::cmp(const DateTime &dt) const
{
if(int c=cmp_(year, dt.year))
TimeStamp DateTime::get_timestamp() const
{
if(year<-289701 || year>293641)
- throw Exception("DateTime is not representable as a TimeStamp");
+ throw InvalidState("DateTime is not representable as a TimeStamp");
- int64_t raw=(((hour*60LL)+minute)*60+second)*1000000+usec;
+ RawTime raw=(((hour*60LL)+minute)*60+second)*1000000+usec;
int days=(year-1970)*365;
days+=(year-1)/4-(year-1)/100+(year-1)/400-477;
for(unsigned i=1; i<month; ++i)
else if(*i=='y')
ss<<setw(2)<<year%100;
else if(*i=='Y')
- ss<<year;
+ ss<<setw(4)<<internal<<year;
else if(*i=='%')
ss<<'%';
}
return ss.str();
}
-void DateTime::add_raw(int64_t raw)
+string DateTime::format_rfc3339() const
{
- int32_t days=raw/86400000000LL;
+ string result=format("%Y-%m-%dT%H:%M:%S");
+ if(const TimeDelta &offs=zone.get_offset())
+ {
+ ostringstream ss;
+ ss.fill('0');
+ int m=abs(static_cast<int>(offs/Time::min));
+ ss<<(offs<zero ? '+' : '-')<<setw(2)<<m/60<<':'<<setw(2)<<m%60;
+ result+=ss.str();
+ }
+ else
+ result+='Z';
+ return result;
+}
+
+void DateTime::init(const TimeStamp &ts)
+{
+ year=1970;
+ month=1;
+ mday=1;
+ hour=0;
+ minute=0;
+ second=0;
+ usec=0;
+ add_raw(ts.raw());
+}
+
+void DateTime::init(int y, unsigned char m, unsigned char d, unsigned char h, unsigned char n, unsigned char s, unsigned u)
+{
+ year=y;
+ month=m;
+ mday=d;
+ hour=h;
+ minute=n;
+ second=s;
+ usec=u;
+ validate();
+}
+
+void DateTime::add_raw(RawTime raw)
+{
+ int days=static_cast<int>(raw/86400000000LL);
raw%=86400000000LL;
if(raw<0)
{
- ++days;
+ --days;
raw+=86400000000LL;
}
}
}
+void DateTime::validate() const
+{
+ if(usec>=1000000)
+ throw InvalidParameterValue("Microseconds out of range");
+ if(second>=60)
+ throw InvalidParameterValue("Seconds out of range");
+ if(minute>=60)
+ throw InvalidParameterValue("Minutes out of range");
+ if(hour>=24)
+ throw InvalidParameterValue("Hours out of range");
+ if(month<1 || month>12)
+ throw InvalidParameterValue("Month out of range");
+ if(mday<1 || mday>month_days(year, month))
+ throw InvalidParameterValue("Day of month out of range");
+}
+
} // namespace Time
} // namespace Msp
projects / libs / core.git / blobdiff