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version 1.1, 2009/09/03 13:54:05

version 1.2, 2009/12/15 11:39:33

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//%LICENSE////////////////////////////////////////////////////////////////

// Licensed to The Open Group (TOG) under one or more contributor license

// agreements. Refer to the OpenPegasusNOTICE.txt file distributed with

// this work for additional information regarding copyright ownership.

// Each contributor licenses this file to you under the OpenPegasus Open

// Source License; you may not use this file except in compliance with the

// License.

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the "Software"),

// to deal in the Software without restriction, including without limitation

// the rights to use, copy, modify, merge, publish, distribute, sublicense,

// and/or sell copies of the Software, and to permit persons to whom the

// Software is furnished to do so, subject to the following conditions:

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

//////////////////////////////////////////////////////////////////////////

//%/////////////////////////////////////////////////////////////////////////////

#include <cstring>

#include <cassert>

#include "CIMDateTime.h"

#include "CIMDateTimeRep.h"

PEGASUS_USING_STD;

PEGASUS_NAMESPACE_BEGIN

// Julian day of "1 BCE January 1".

static const Uint32 JULIAN_ONE_BCE = 1721060;

// Number of microseconds in one second.

static const Uint64 SECOND = 1000000;

// Number of microseconds in one minute.

static const Uint64 MINUTE = 60 * SECOND;

// Number of microseconds in one hour.

static const Uint64 HOUR = 60 * MINUTE;

// Number of microseconds in one day.

static const Uint64 DAY = 24 * HOUR;

/** Convert month, day, and year to a Julian day (in the Gregorian calendar).

Return julian day.

static inline Uint32 _toJulianDay(Uint32 year, Uint32 month, Uint32 day)

{

// Formula adapted from "FREQUENTLY ASKED QUESTIONS ABOUT CALENDARS"

// (see http://www.tondering.dk/claus/calendar.html).

int a = (14 - month)/12;

int y = year+4800-a;

int m = month + 12*a - 3;

return day + (153*m+2)/5 + y*365 + y/4 - y/100 + y/400 - 32045;

}

/** Convert a Julian day number (in the Gregorian calendar) to year, month,

and day.

static inline void _fromJulianDay(

Uint32 jd, Uint32& year, Uint32& month, Uint32& day)

{

// Formula adapted from "FREQUENTLY ASKED QUESTIONS ABOUT CALENDARS"

// (see http://www.tondering.dk/claus/calendar.html).

int a = jd + 32044;

int b = (4*a+3)/146097;

int c = a - (b*146097)/4;

int d = (4*c+3)/1461;

int e = c - (1461*d)/4;

int m = (5*e+2)/153;

day = e - (153*m+2)/5 + 1;

month = m + 3 - 12*(m/10);

year = b*100 + d - 4800 + m/10;

}

static char _intToNumStrTable[][2] =

{

{ '0', '0', },

{ '0', '1', },

{ '0', '2', },

{ '0', '3', },

{ '0', '4', },

{ '0', '5', },

{ '0', '6', },

{ '0', '7', },

{ '0', '8', },

{ '0', '9', },

{ '1', '0', },

{ '1', '1', },

{ '1', '2', },

{ '1', '3', },

{ '1', '4', },

{ '1', '5', },

{ '1', '6', },

{ '1', '7', },

{ '1', '8', },

{ '1', '9', },

{ '2', '0', },

{ '2', '1', },

{ '2', '2', },

{ '2', '3', },

{ '2', '4', },

{ '2', '5', },

{ '2', '6', },

{ '2', '7', },

{ '2', '8', },

{ '2', '9', },

{ '3', '0', },

{ '3', '1', },

{ '3', '2', },

{ '3', '3', },

{ '3', '4', },

{ '3', '5', },

{ '3', '6', },

{ '3', '7', },

{ '3', '8', },

{ '3', '9', },

{ '4', '0', },

{ '4', '1', },

{ '4', '2', },

{ '4', '3', },

{ '4', '4', },

{ '4', '5', },

{ '4', '6', },

{ '4', '7', },

{ '4', '8', },

{ '4', '9', },

{ '5', '0', },

{ '5', '1', },

{ '5', '2', },

{ '5', '3', },

{ '5', '4', },

{ '5', '5', },

{ '5', '6', },

{ '5', '7', },

{ '5', '8', },

{ '5', '9', },

};

// generated string format: "%04u%02u%02u%02u%02u%02u.%06u%c%03u"

// Function is eight times faster than using sprintf()

static inline void _fullYearFormat(

char buffer[26],

Uint32 year,

Uint32 month,

Uint32 day,

Uint32 hours,

Uint32 minutes,

Uint32 seconds,

Uint32 microseconds,

char sign,

Uint32 utcOffset)

{

// 48 = ASCII '0'

buffer[0] = year/1000 + 48;

buffer[1] = (year%1000)/100 + 48;

buffer[2] = (year%100)/10 + 48;

buffer[3] = (year%10) + 48;

buffer[4] = _intToNumStrTable[month][0];

buffer[5] = _intToNumStrTable[month][1];

buffer[6] = _intToNumStrTable[day][0];

buffer[7] = _intToNumStrTable[day][1];

buffer[8] = _intToNumStrTable[hours][0];

buffer[9] = _intToNumStrTable[hours][1];

buffer[10] = _intToNumStrTable[minutes][0];

buffer[11] = _intToNumStrTable[minutes][1];

buffer[12] = _intToNumStrTable[seconds][0];

buffer[13] = _intToNumStrTable[seconds][1];

buffer[14] = '.';

buffer[15] = (microseconds/100000) + 48;

buffer[16] = (microseconds%100000)/10000 + 48;

buffer[17] = (microseconds%10000)/1000 + 48;

buffer[18] = (microseconds%1000)/100 + 48;

buffer[19] = (microseconds%100)/10 + 48;

buffer[20] = (microseconds%10) + 48;

buffer[21] = sign;

buffer[22] = (utcOffset/100) + 48;

buffer[23] = (utcOffset%100)/10 + 48;

buffer[24] = (utcOffset%10) + 48;

buffer[25] = '\0';

}

// generated string format: ""%08u%02u%02u%02u.%06u:000"

// Function is eight times faster than using sprintf()

static inline void _fullDayFormat(

char buffer[26],

Uint32 day,

Uint32 hours,

Uint32 minutes,

Uint32 seconds,

Uint32 microseconds)

{

// 48 = ASCII '0'

buffer[0] = (day/10000000) + 48;

buffer[1] = (day%10000000)/1000000 + 48;

buffer[2] = (day%1000000)/100000 + 48;

buffer[3] = (day%100000)/10000 + 48;

buffer[4] = (day%10000)/1000 + 48;

buffer[5] = (day%1000)/100 + 48;

buffer[6] = (day%100)/10 + 48;

buffer[7] = (day%10) + 48;

buffer[8] = _intToNumStrTable[hours][0];

buffer[9] = _intToNumStrTable[hours][1];

buffer[10] = _intToNumStrTable[minutes][0];

buffer[11] = _intToNumStrTable[minutes][1];

buffer[12] = _intToNumStrTable[seconds][0];

buffer[13] = _intToNumStrTable[seconds][1];

buffer[14] = '.';

buffer[15] = (microseconds/100000) + 48;

buffer[16] = (microseconds%100000)/10000 + 48;

buffer[17] = (microseconds%10000)/1000 + 48;

buffer[18] = (microseconds%1000)/100 + 48;

buffer[19] = (microseconds%100)/10 + 48;

buffer[20] = (microseconds%10) + 48;

buffer[21] = ':';

buffer[22] = '0';

buffer[23] = '0';

buffer[24] = '0';

buffer[25] = '\0';

}

/** Converts a CIMDateTimeRep representation to its canonical string

representation as defined in the "CIM infrastructure Specification".

Note that this implementation preserves any wildcard characters used

to initially create the CIMDateTime object.

static inline void _DateTimetoCStr(const CIMDateTimeRep& rep, char buffer[26])

{

if (rep.sign == ':')

{

// Extract components:

Uint64 usec = rep.usec;

Uint32 microseconds = Uint32(usec % SECOND);

Uint32 seconds = Uint32((usec / SECOND) % 60);

Uint32 minutes = Uint32((usec / MINUTE) % 60);

Uint32 hours = Uint32((usec / HOUR) % 24);

Uint32 days = Uint32((usec / DAY));

// Format the string.

_fullDayFormat(

buffer,

days,

hours,

minutes,

seconds,

microseconds);

}

else

{

// Extract components:

Uint64 usec = rep.usec;

Uint32 microseconds = Uint32(usec % SECOND);

Uint32 seconds = Uint32((usec / SECOND) % 60);

Uint32 minutes = Uint32((usec / MINUTE) % 60);

Uint32 hours = Uint32((usec / HOUR) % 24);

Uint32 days = Uint32((usec / DAY));

Uint32 jd = Uint32(days + JULIAN_ONE_BCE);

// Convert back from julian to year/month/day:

Uint32 year;

Uint32 month;

Uint32 day;

_fromJulianDay(jd, year, month, day);

// Format the string.

_fullYearFormat(

buffer,

year,

month,

day,

hours,

minutes,

seconds,

microseconds,

char(rep.sign),

rep.utcOffset);

}

// Fill buffer with '*' chars (if any).

if (rep.numWildcards > 0)

{

char* first = buffer + 20;

char* last = buffer + 20 - rep.numWildcards;

if (rep.numWildcards > 6)

last--;

for (; first != last; first--)

{

if (*first != '.')

*first = '*';

}

PEGASUS_NAMESPACE_END

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