-/* $Id$ */
-#include <sstream>
-#include <iomanip>
-#include "../core/except.h"
+#include <cstdlib>
+#include <stdexcept>
+#include <msp/strings/format.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)
{
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(int32_t y, uint8_t m, uint8_t d):
- year(y),
- month(m),
- mday(d),
- hour(0),
- minute(0),
- second(0),
- usec(0)
+DateTime::DateTime(int y, unsigned char m, unsigned char d, unsigned char h, unsigned char n, unsigned char s, unsigned u)
{
- validate();
+ init(y, m, d, h, n, s, u);
}
-DateTime::DateTime(int32_t y, uint8_t m, uint8_t d, uint8_t h, uint8_t n, uint8_t s):
- year(y),
- month(m),
- mday(d),
- hour(h),
- minute(n),
- second(s),
- usec(0)
+void DateTime::init(const TimeStamp &ts)
{
- validate();
+ year = 1970;
+ month = 1;
+ mday = 1;
+ hour = 0;
+ minute = 0;
+ second = 0;
+ usec = 0;
+ add_raw(ts.raw());
}
-DateTime::DateTime(int32_t y, uint8_t m, uint8_t d, uint8_t h, uint8_t n, uint8_t s, uint32_t u):
- year(y),
- month(m),
- mday(d),
- hour(h),
- minute(n),
- second(s),
- usec(u)
+void DateTime::init(int y, unsigned char m, unsigned char d, unsigned char h, unsigned char n, unsigned char s, unsigned u)
{
- validate();
+ year = y;
+ month = m;
+ mday = d;
+ hour = h;
+ minute = n;
+ second = s;
+ usec = u;
+
+ if(usec>=1000000)
+ throw out_of_range("DateTime::DateTime usec");
+ if(second>=60)
+ throw out_of_range("DateTime::DateTime second");
+ if(minute>=60)
+ throw out_of_range("DateTime::DateTime minute");
+ if(hour>=24)
+ throw out_of_range("DateTime::DateTime hour");
+ if(month<1 || month>12)
+ throw out_of_range("DateTime::DateTime month");
+ if(mday<1 || mday>month_days(year, month))
+ throw out_of_range("DateTime::DateTime mday");
}
-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 (400*365+97=146097) */
- new_year+=days/146097*400;
- days%=146097;
+ constant number of days (400*365+97 = 146097) */
+ new_year += days/146097*400;
+ days %= 146097;
if(days<0)
{
- new_year-=400;
- days+=146097;
+ new_year -= 400;
+ days += 146097;
}
// Fudge factor for leap day
- int fudge=(month<=2)?1:0;
+ int fudge = (month<=2)?1:0;
// (Almost) every 4 year cycle has 1 leap year and 3 normal years
- unsigned cycles=days/1461;
- days%=1461;
+ unsigned cycles = days/1461;
+ days %= 1461;
- new_year+=cycles*4;
+ new_year += cycles*4;
// See how many non-leap-years we counted as leap years and reclaim the lost days
- unsigned missed_leap_days=((year-fudge)%100+cycles*4)/100;
+ // 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;
- days+=missed_leap_days;
+ days += missed_leap_days;
// Count single years from the 4 year cycle
- cycles=days/365;
- days%=365;
+ cycles = days/365;
+ days %= 365;
- new_year+=cycles;
+ new_year += cycles;
- if((year-fudge)%4+cycles>=4)
+ if((year-fudge)%4+cycles>=4 && (new_year%100>=4 || new_year%400<4))
{
// 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;
}
- year=new_year;
+ year = new_year;
// Step months
while(mday+days>month_days(year, month))
{
- days-=month_days(year, month);
+ days -= month_days(year, month);
++month;
if(month>12)
{
++year;
- month=1;
+ month = 1;
}
}
- mday+=days;
+ mday += days;
+}
+
+void DateTime::set_timezone(const TimeZone &tz)
+{
+ zone = tz;
+}
+
+void DateTime::convert_timezone(const TimeZone &tz)
+{
+ add_raw((tz.get_offset()-zone.get_offset()).raw());
+ zone = tz;
}
DateTime DateTime::operator+(const TimeDelta &td) const
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))
+ if(int c = cmp_(year, dt.year))
return c;
- if(int c=cmp_(month, dt.month))
+ if(int c = cmp_(month, dt.month))
return c;
- if(int c=cmp_(mday, dt.mday))
+ if(int c = cmp_(mday, dt.mday))
return c;
- if(int c=cmp_(hour, dt.hour))
+ if(int c = cmp_(hour, dt.hour))
return c;
- if(int c=cmp_(minute, dt.minute))
+ if(int c = cmp_(minute, dt.minute))
return c;
- if(int c=cmp_(second, dt.second))
+ if(int c = cmp_(second, dt.second))
return c;
- if(int c=cmp_(usec, dt.usec))
+ if(int c = cmp_(usec, dt.usec))
return c;
return 0;
}
TimeStamp DateTime::get_timestamp() const
{
if(year<-289701 || year>293641)
- throw Exception("DateTime is not representable as a TimeStamp");
+ throw range_error("DateTime::get_timestamp");
- int64_t raw=(((hour*60LL)+minute)*60+second)*1000000+usec;
- int days=(year-1970)*365;
- days+=(year-1)/4-(year-1)/100+(year-1)/400-477;
+ 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)
- days+=month_days(year, i);
- days+=mday-1;
+ days += month_days(year, i);
+ days += mday-1;
- raw+=days*86400000000LL;
+ raw += days*86400000000LL;
return TimeStamp(raw);
}
string DateTime::format(const string &fmt) const
{
- ostringstream ss;
- ss.fill('0');
+ string result;
for(string::const_iterator i=fmt.begin(); i!=fmt.end(); ++i)
{
if(*i=='%')
if(i==fmt.end())
break;
else if(*i=='d')
- ss<<setw(2)<<int(mday);
+ result += Msp::format("%02d", mday);
else if(*i=='H')
- ss<<setw(2)<<int(hour);
+ result += Msp::format("%02d", hour);
else if(*i=='I')
- ss<<setw(2)<<hour%12;
+ result += Msp::format("%02d", hour%12);
else if(*i=='m')
- ss<<setw(2)<<int(month);
+ result += Msp::format("%02d", month);
else if(*i=='M')
- ss<<setw(2)<<int(minute);
+ result += Msp::format("%02d", minute);
else if(*i=='p')
- ss<<((hour>=12) ? "PM" : "AM");
+ result += ((hour>=12) ? "PM" : "AM");
else if(*i=='S')
- ss<<setw(2)<<int(second);
+ result += Msp::format("%02d", second);
else if(*i=='y')
- ss<<setw(2)<<year%100;
+ result += Msp::format("%02d", year%100);
else if(*i=='Y')
- ss<<year;
+ result += Msp::format("%04d", year);
else if(*i=='%')
- ss<<'%';
+ result += '%';
}
else
- ss<<*i;
+ result += *i;
}
- return ss.str();
+ return result;
}
-void DateTime::add_raw(int64_t raw)
+string DateTime::format_rfc3339() const
{
- int32_t days=raw/86400000000LL;
- raw%=86400000000LL;
+ string result = format("%Y-%m-%dT%H:%M:%S");
+ if(const TimeDelta &offs = zone.get_offset())
+ {
+ int m = abs(static_cast<int>(offs/Time::min));
+ result += Msp::format("%c%02d:%02d", (offs<zero ? '-' : '+'), m/60, m%60);
+ }
+ else
+ result += 'Z';
+ return result;
+}
+
+void DateTime::add_raw(RawTime raw)
+{
+ int days = static_cast<int>(raw/86400000000LL);
+ raw %= 86400000000LL;
if(raw<0)
{
- ++days;
- raw+=86400000000LL;
+ --days;
+ raw += 86400000000LL;
}
- usec+=raw%1000000; raw/=1000000;
- second+=raw%60; raw/=60;
- minute+=raw%60; raw/=60;
- hour+=raw%24; raw/=24;
+ usec+=raw%1000000; raw /= 1000000;
+ second+=raw%60; raw /= 60;
+ minute+=raw%60; raw /= 60;
+ hour+=raw%24; raw /= 24;
add_days(days);
normalize();
void DateTime::normalize()
{
- second+=usec/1000000;
- usec%=1000000;
- minute+=second/60;
- second%=60;
- hour+=minute/60;
- minute%=60;
- mday+=hour/24;
- hour%=24;
+ second += usec/1000000;
+ usec %= 1000000;
+ minute += second/60;
+ second %= 60;
+ hour += minute/60;
+ minute %= 60;
+ mday += hour/24;
+ hour %= 24;
while(mday>month_days(year, month))
{
- mday-=month_days(year, month);
+ mday -= month_days(year, month);
++month;
if(month>12)
{
++year;
- month=1;
+ month = 1;
}
}
}
-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