-/* $Id$
-
-This file is part of libmspcore
-Copyright © 2006 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#include <cstdlib>
-#include <sstream>
-#include <iomanip>
-#include "../core/except.h"
+#include <stdexcept>
+#include <msp/strings/format.h>
+#include <msp/strings/regex.h>
#include "datetime.h"
#include "timestamp.h"
-#include "units.h"
using namespace std;
}
template<typename T>
-inline int cmp_(T a, T b)
+inline int _cmp(T a, T b)
{
if(a<b)
return -1;
DateTime::DateTime(const TimeStamp &ts)
{
- init(ts);
+ add_raw(ts.raw());
}
-DateTime::DateTime(const TimeStamp &ts, const TimeZone &tz)
+DateTime::DateTime(const TimeStamp &ts, const TimeZone &tz):
+ DateTime(ts)
{
- init(ts);
convert_timezone(tz);
}
-DateTime::DateTime(int y, unsigned char m, unsigned char d)
+DateTime::DateTime(int y, unsigned char m, unsigned char d):
+ DateTime(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):
+ DateTime(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):
+ year(y),
+ month(m),
+ mday(d),
+ hour(h),
+ minute(n),
+ second(s),
+ usec(u)
{
- init(y, m, d, 0, 0, 0, 0);
+ 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");
}
-DateTime::DateTime(int y, unsigned char m, unsigned char d, unsigned char h, unsigned char n, unsigned char s)
+DateTime DateTime::parse_rfc3339(const string &str)
{
- init(y, m, d, h, n, s, 0);
-}
+ static Regex re("^([0-9]{4})-([0-9]{2})-([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})(.([0-9]+))?(Z|[-+]([0-9]{2}):([0-9]{2}))$");
+
+ RegMatch m = re.match(str);
+ if(!m)
+ throw invalid_argument("DateTime::parse_rfc3339");
+
+ unsigned year = lexical_cast<unsigned>(m[1].str);
+ unsigned month = lexical_cast<unsigned>(m[2].str);
+ unsigned mday = lexical_cast<unsigned>(m[3].str);
+ unsigned hr = lexical_cast<unsigned>(m[4].str);
+ unsigned minute = lexical_cast<unsigned>(m[5].str);
+ unsigned second = lexical_cast<unsigned>(m[6].str);
+ unsigned us = 0;
+ const string &sec_frac = m[8].str;
+ if(!sec_frac.empty())
+ {
+ us = lexical_cast<unsigned>(sec_frac);
+ for(unsigned i=sec_frac.size(); i<6; ++i)
+ us *= 10;
+ for(unsigned i=sec_frac.size(); i>6; --i)
+ us /= 10;
+ }
-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 result = DateTime(year, month, mday, hr, minute, second, us);
+
+ int tzoff = 0;
+ if(m[9].str!="Z")
+ {
+ tzoff = lexical_cast<unsigned>(m[10].str)*60+lexical_cast<unsigned>(m[11].str);
+ if(m[9].str[0]=='-')
+ tzoff = -tzoff;
+ }
+
+ result.set_timezone(tzoff);
+
+ return result;
}
void DateTime::add_days(int days)
{
- int 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
// XXX This breaks with negative years
- unsigned missed_leap_days=((year-fudge)%100+cycles*4)/100;
+ 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;
+ days = is_leap_year(new_year-fudge) ? 365 : 364;
--new_year;
}
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;
+ zone = tz;
}
void DateTime::convert_timezone(const TimeZone &tz)
{
- add_raw((zone.get_offset()-tz.get_offset()).raw());
- zone=tz;
+ add_raw((tz.get_offset()-zone.get_offset()).raw());
+ zone = tz;
}
DateTime DateTime::operator+(const TimeDelta &td) const
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 InvalidState("DateTime is not representable as a TimeStamp");
+ throw range_error("DateTime::get_timestamp");
- 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;
+ 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');
- for(string::const_iterator i=fmt.begin(); i!=fmt.end(); ++i)
+ string result;
+ for(auto 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<<setw(4)<<internal<<year;
+ result += Msp::format("%04d", year);
else if(*i=='%')
- ss<<'%';
+ result += '%';
}
else
- ss<<*i;
+ result += *i;
}
- return ss.str();
+ return result;
}
string DateTime::format_rfc3339() const
{
- string result=format("%Y-%m-%dT%H:%M:%S");
- if(const TimeDelta &offs=zone.get_offset())
+ string result = format("%Y-%m-%dT%H:%M:%S");
+ if(usec)
+ result += Msp::format(".%06d", usec);
+ 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();
+ int m = abs(static_cast<int>(offs/Time::min));
+ result += Msp::format("%c%02d:%02d", (offs<zero ? '-' : '+'), m/60, m%60);
}
else
- result+='Z';
+ 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;
+ int days = static_cast<int>(raw/86400000000LL);
+ raw %= 86400000000LL;
if(raw<0)
{
--days;
- raw+=86400000000LL;
+ 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
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