time.cpp
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hlxclib/time.h"
- #include "hlxclib/assert.h"
- #include "hlxclib/limits.h"
- #include "hlxclib/stdio.h"
- #ifndef _WINCE
- struct tm* __helix_localtime(time_t* timep)
- {
- assert(!"__helix_localtime(): Not implementedn");
- return 0;
- }
- #endif /* _WINCE */
- #ifdef _WINCE
- struct tm* __helix_localtime(long* pTime);
- char * __helix_asctime(struct tm *pTm);
- long __helix_mktime(struct tm* pTm);
- void __helix_tzset()
- {
- // not needed for this wince time implementation
- return;
- }
- char * __helix_ctime(long *pTime)
- {
- struct tm *pTm;
- pTm = __helix_localtime(pTime);
- if (!pTm)
- return NULL;
- return __helix_asctime(pTm);
- }
- char *DAY_NAMES[] = {
- "Sun"
- , "Mon"
- , "Tue"
- , "Wed"
- , "Thu"
- , "Fri"
- , "Sat"
- };
- char *MONTH_NAMES[] = {
- "Jan"
- ,"Feb"
- ,"Mar"
- ,"Apr"
- ,"May"
- ,"Jun"
- ,"Jul"
- ,"Aug"
- ,"Sep"
- ,"Oct"
- ,"Nov"
- ,"Dec"
- };
- //--------------------------------------------------------
- // build date string in the form ddd mmm dd hh:mm:ss yyyy
- char * __helix_asctime(struct tm *pTm)
- {
- static char buf[80];
- if (!pTm)
- return NULL;
- strcpy(buf,DAY_NAMES[pTm->tm_wday]);
- buf[3] = ' ';
- strcpy(&buf[4],MONTH_NAMES[pTm->tm_mon]);
- buf[7] = ' ';
- sprintf(&buf[8],"%02d %02d:%02d:%02d %04dn",pTm->tm_mday,
- pTm->tm_hour,
- pTm->tm_min,
- pTm->tm_sec,
- pTm->tm_year+1970);
- return buf;
- }
- int SECONDS_IN_MONTH[12] = {
- 31*24*60*60 // jan
- ,28*24*60*60 // feb
- ,31*24*60*60 // mar
- ,30*24*60*60 // apr
- ,31*24*60*60 // may
- ,30*24*60*60 // jun
- ,31*24*60*60 // jul
- ,31*24*60*60 // aug
- ,30*24*60*60 // sep
- ,31*24*60*60 // oct
- ,30*24*60*60 // nov
- ,31*24*60*60 // dec
- };
- //--------------------------------------------------------
- struct tm *__helix_gmtime(long *pTime)
- {
- static tm tm;
-
- memset(&tm,0,sizeof(tm));
- if ( !pTime || *pTime < 0)
- return &tm;
- long t = *pTime;
- tm.tm_wday = (t/(24*60*60) + 4) % 7; // day of the week
- tm.tm_year = 1970;
- while (t > 0)
- {
- t -= 365L * 24L * 60L * 60L; // seconds/non leap year
- if (t < 0)
- {
- t += 365L * 24L * 60L * 60L;
- break;
- }
- if ((tm.tm_year & 3) == 0) // leap year
- t -= 24L * 60L * 60L; // leap year day
- if (t < 0)
- {
- t += 24L * 60L * 60L;
- t += 365L * 24L * 60L * 60L;
- break;
- }
- ++tm.tm_year;
- }
- tm.tm_yday = t/(24L * 60L * 60L); //day of the year
- while (t > 0 && tm.tm_mon < 11)
- {
- t -= SECONDS_IN_MONTH[tm.tm_mon];
- if (t < 0)
- {
- t += SECONDS_IN_MONTH[tm.tm_mon];
- break;
- }
- if ((tm.tm_year & 3) == 0 && tm.tm_mon == 1) // leap year and feb
- t -= 24*60*60;
- if (t < 0)
- {
- t += 24*60*60;
- t += SECONDS_IN_MONTH[tm.tm_mon];
- break;
- }
- ++tm.tm_mon;
- }
- tm.tm_mday = t/(24*60*60);
- t -= tm.tm_mday * 24*60*60;
- ++tm.tm_mday; // day is 1..31
- tm.tm_hour = t/(60*60); //0..23
- t -= tm.tm_hour * 60*60;
- tm.tm_min = t/60; // 0..60
- t -= tm.tm_min * 60;
- tm.tm_sec = t;
- tm.tm_year -= 1900;
- return &tm;
- }
- //--------------------------------------------------------
- struct tm* __helix_localtime(long* pTime)
- {
- tm *pTm = NULL;
- long t;
- TIME_ZONE_INFORMATION tz;
- tm s,e; // start and end date of dst
- long sabs,eabs; // absolute time of start/end dst
- if (!pTime || *pTime < 0)
- return NULL;
- ::GetTimeZoneInformation(&tz);
- t = *pTime - tz.Bias * 60; // backup to gmt
- pTm = __helix_gmtime(&t); // get local time
- if (!pTm)
- return NULL;
- pTm->tm_isdst = 0;
- if (tz.StandardDate.wMonth == 0)
- return pTm;
- memset(&s,0,sizeof(tm));
- s.tm_year = pTm->tm_year;
- s.tm_mon = tz.DaylightDate.wMonth-1;
- s.tm_mday = 1;
- s.tm_hour = tz.DaylightDate.wHour;
- sabs = __helix_mktime(&s);
- sabs += (7-s.tm_wday)*24*60*60; // days to 1st sunday
- memset(&e,0,sizeof(tm));
- e.tm_year = pTm->tm_year;
- e.tm_mon = tz.StandardDate.wMonth-1;
- e.tm_mday = 31;
- e.tm_hour = tz.StandardDate.wHour;
- eabs = __helix_mktime(&e);
- eabs -= e.tm_wday*24*60*60; // days to last sunday
- if (((t > sabs) && (t < eabs) && (eabs > sabs)) ||
- (((t > sabs) || (t < eabs)) && (eabs < sabs)))
- { // in dst
- t -= tz.DaylightBias * 60; // take out daylight savings time
- pTm = __helix_gmtime(&t);
- pTm->tm_isdst = 1;
- }
- return pTm;
-
- }
- //--------------------------------------------------------
- long __helix_convertTime(SYSTEMTIME *pS, int *pDayOfYear)
- {
- long t = 0;
- int y = pS->wYear;
- for (int i = 0; i < pS->wMonth-1; i++)
- t += SECONDS_IN_MONTH[i];
- if ((pS->wYear & 3) == 0 && pS->wMonth > 2)
- t += 24*60*60;
- t += (pS->wDay - 1)*24*60*60;
- t += pS->wHour * 60*60;
- t += pS->wMinute * 60;
- t += pS->wSecond;
- *pDayOfYear = t/(24L * 60L * 60L); //day of the year
- while (y > 1970)
- {
- --y;
- t += 365*24*60*60;
- if ((y & 3) == 0)
- t += 24*60*60;
- }
- pS->wDayOfWeek = (t/(24*60*60) + 4) % 7; // day of the week
- return t;
- }
- //--------------------------------------------------------
- long __helix_time(long *pTime)
- {
- long t;
- SYSTEMTIME s;
- int idoy;
- ::GetSystemTime(&s);
- t = __helix_convertTime(&s,&idoy);
- if (pTime)
- *pTime = t;
- return t;
- }
- //--------------------------------------------------------
- long __helix_mktime(struct tm* pTm)
- {
- long t;
- SYSTEMTIME s;
- if (!pTm)
- return 0;
- s.wYear = pTm->tm_year+1900;
- s.wMonth = pTm->tm_mon+1;
- s.wDay = pTm->tm_mday;
- s.wHour = pTm->tm_hour;
- s.wMinute = pTm->tm_min;
- s.wSecond = pTm->tm_sec;
- t = __helix_convertTime(&s,&pTm->tm_yday);
- pTm->tm_wday = s.wDayOfWeek;
- return t;
- }
- #endif /* _WINCE */
- #ifdef _OPENWAVE
- #include "platform/openwave/hx_OpUtils.h"
- time_t __helix_time(time_t* p)
- {
- time_t t = op_time();
- if (p) *p = t;
- return t;
- }
- struct tm *__helix_gmtime(const time_t *timep)
- {
- static struct tm structTM;
- op_gmtime(op_time(), &structTM);
- return &structTM;
- }
- time_t __helix_mktime(struct tm* tm)
- {
- // XXXSAB Assume that we're always dealing with UTC time?
- return op_timegm(tm);
- }
- int __helix_gettimeofday(struct timeval *tv, void *tz)
- {
- int ret = 0;
- static U32 carry = 0;
- static const U32 carryIncrement = (UINT_MAX / 1000) + 1;
- static U32 lastT = 0;
- U32 t = op_getMSecs();
- if (t < lastT)
- {
- carry += carryIncrement;
- }
- lastT = t;
- U32 ts = t / 1000;
- tv->tv_sec = ts + carry;
- tv->tv_usec = 1000 * (t - ts * 1000);
- return ret;
- }
- char * __helix_ctime(const time_t *timer)
- {
- char *st = NULL;
-
- /*
- struct op_tm {
- S8 tm_sec; seconds (0 - 61)
- S8 tm_min; minutes (0 - 59)
- S8 tm_hour; hours (0 - 23)
- S8 tm_mday; day of month (1 - 31)
- S8 tm_mon; month of year (0 - 11)
- S8 tm_wday; day of week (Sunday = 0)
- S16 tm_year; year - 1900
- S16 tm_yday; day of year (0 - 365)
- */
- op_tm optm;
- if (kTrue == op_gmtime(*timer, &optm))
- {
- /*
- * based on iso c, return string is precisely 26 chars
- * in the form of: Wed Jan 02 02:03:55 1980n
- */
- st = new char[26];
- char *weekdays[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
- char *months[] = {"Jan", "Feb", "Mar", "Api", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
- snprintf(st, 26, "%s %s %2u:%2u:%2u:%2u %4un ", weekdays[optm.tm_wday],
- months[optm.tm_mon],optm.tm_mday, optm.tm_hour, optm.tm_min, optm.tm_sec, optm.tm_year);
- }
- return st;
- }
- #endif /* _OPENWAVE */