LCOV - code coverage report
Current view: top level - lotuswordpro/source/filter - localtime.cxx (source / functions) Hit Total Coverage
Test: commit c8344322a7af75b84dd3ca8f78b05543a976dfd5 Lines: 40 46 87.0 %
Date: 2015-06-13 12:38:46 Functions: 2 2 100.0 %
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          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*************************************************************************
       3             :  *
       4             :  *  The Contents of this file are made available subject to the terms of
       5             :  *  either of the following licenses
       6             :  *
       7             :  *         - GNU Lesser General Public License Version 2.1
       8             :  *         - Sun Industry Standards Source License Version 1.1
       9             :  *
      10             :  *  Sun Microsystems Inc., October, 2000
      11             :  *
      12             :  *  GNU Lesser General Public License Version 2.1
      13             :  *  =============================================
      14             :  *  Copyright 2000 by Sun Microsystems, Inc.
      15             :  *  901 San Antonio Road, Palo Alto, CA 94303, USA
      16             :  *
      17             :  *  This library is free software; you can redistribute it and/or
      18             :  *  modify it under the terms of the GNU Lesser General Public
      19             :  *  License version 2.1, as published by the Free Software Foundation.
      20             :  *
      21             :  *  This library is distributed in the hope that it will be useful,
      22             :  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
      23             :  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      24             :  *  Lesser General Public License for more details.
      25             :  *
      26             :  *  You should have received a copy of the GNU Lesser General Public
      27             :  *  License along with this library; if not, write to the Free Software
      28             :  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
      29             :  *  MA  02111-1307  USA
      30             :  *
      31             :  *
      32             :  *  Sun Industry Standards Source License Version 1.1
      33             :  *  =================================================
      34             :  *  The contents of this file are subject to the Sun Industry Standards
      35             :  *  Source License Version 1.1 (the "License"); You may not use this file
      36             :  *  except in compliance with the License. You may obtain a copy of the
      37             :  *  License at http://www.openoffice.org/license.html.
      38             :  *
      39             :  *  Software provided under this License is provided on an "AS IS" basis,
      40             :  *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
      41             :  *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
      42             :  *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
      43             :  *  See the License for the specific provisions governing your rights and
      44             :  *  obligations concerning the Software.
      45             :  *
      46             :  *  The Initial Developer of the Original Code is: IBM Corporation
      47             :  *
      48             :  *  Copyright: 2008 by IBM Corporation
      49             :  *
      50             :  *  All Rights Reserved.
      51             :  *
      52             :  *  Contributor(s): _______________________________________
      53             :  *
      54             :  *
      55             :  ************************************************************************/
      56             : #include "localtime.hxx"
      57             : #include <limits.h>
      58             : #include <unicode/timezone.h>
      59             : //End by
      60             : const long DAY_SEC =24 * 60 * 60;
      61             : const long YEAR_SEC = 365 * DAY_SEC;
      62             : const long FOURYEAR_SEC = 4 * YEAR_SEC + DAY_SEC;
      63             : #ifndef LONG_MAX
      64             : const long LONG_MAX=2147483647;
      65             : #endif
      66             : //01-01-70 was a Thursday
      67             : const long BASE_DOW = 4;
      68             : 
      69             : long _lpdays[] = {-1, 30, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365};
      70             : 
      71             : long _days[] = {-1, 30, 58, 89, 119, 150, 180, 211, 242, 272, 303, 333, 364};
      72             : 
      73           8 : bool LtgGmTime(long rtime,LtTm& rtm)
      74             : {
      75           8 :     if (rtime < 0)
      76             :     {
      77           0 :         return false;
      78             :     }
      79             :     //is-current-year-a-leap-year flag
      80           8 :     int islpyr = 0;
      81             : 
      82             :     long tmptim;
      83           8 :     long caltim = rtime;
      84           8 :     tmptim = (long)(caltim / FOURYEAR_SEC);
      85           8 :     caltim -= ((long)tmptim * FOURYEAR_SEC);
      86             : 
      87             :     //Determine which year of the interval
      88             : 
      89             :     // 1970, 1974, 1978,...,etc.
      90           8 :     tmptim = (tmptim * 4) + 70;
      91             : 
      92           8 :     if (caltim >= YEAR_SEC)
      93             :     {
      94             :         //1971, 1975, 1979,...,etc.
      95           8 :         tmptim++;
      96           8 :         caltim -= YEAR_SEC;
      97             : 
      98           8 :         if ( caltim >= YEAR_SEC )
      99             :         {
     100             :             // 1972, 1976, 1980,...,etc.
     101           8 :             tmptim++;
     102           8 :             caltim -= YEAR_SEC;
     103             : 
     104             :             //Note, it takes 366 days-worth of seconds to get past a leap year.
     105           8 :             if (caltim >= (YEAR_SEC + DAY_SEC))
     106             :             {
     107             :                 //1973, 1977, 1981,...,etc.
     108           0 :                 tmptim++;
     109           0 :                 caltim -= (YEAR_SEC + DAY_SEC);
     110             :             }
     111             :             else
     112             :             {
     113             :                 //In a leap year after all, set the flag.
     114           8 :                 islpyr++;
     115             :             }
     116             :         }
     117             :     }
     118             : 
     119             :     //tmptim now holds the value for tm_year. caltim now holds the
     120             :     //number of elapsed seconds since the beginning of that year.
     121             : 
     122           8 :     rtm.tm_year = tmptim;
     123             : 
     124             :     //Determine days since January 1 (0 - 365). This is the tm_yday value.
     125             :     //Leave caltim with number of elapsed seconds in that day.
     126             : 
     127           8 :     rtm.tm_yday = (long)(caltim / DAY_SEC);
     128           8 :     caltim -= (long)(rtm.tm_yday) * DAY_SEC;
     129             : 
     130             :     //Determine months since January (0 - 11) and day of month (1 - 31)
     131             : 
     132             :     long* mdays;
     133           8 :     if ( islpyr )
     134             :     {
     135           8 :         mdays = _lpdays;
     136             :     }
     137             :     else
     138             :     {
     139           0 :         mdays = _days;
     140             :     }
     141             : 
     142           8 :     for ( tmptim = 1 ; mdays[tmptim] < rtm.tm_yday ; tmptim++ ) ;
     143             : 
     144           8 :     rtm.tm_mon = --tmptim;
     145             : 
     146           8 :     rtm.tm_mday = rtm.tm_yday - mdays[tmptim];
     147             : 
     148             :     //Determine days since Sunday (0 - 6)
     149             : 
     150           8 :     rtm.tm_wday = ((long)(rtime / DAY_SEC) + BASE_DOW) % 7;
     151             : 
     152             :     //Determine hours since midnight (0 - 23), minutes after the hour
     153             :     //(0 - 59), and seconds after the minute (0 - 59).
     154             : 
     155           8 :     rtm.tm_hour = (long)(caltim / 3600);
     156           8 :     caltim -= (long)rtm.tm_hour * 3600;
     157             : 
     158           8 :     rtm.tm_min = (long)(caltim / 60);
     159           8 :     rtm.tm_sec = (long)(caltim - (rtm.tm_min) * 60);
     160             : 
     161           8 :     rtm.tm_isdst = 0;
     162             : 
     163             :     //adjust year & month
     164           8 :     rtm.tm_year += 1900;
     165           8 :     ++(rtm.tm_mon);
     166             : 
     167           8 :     return true;
     168             : 
     169             : };
     170           8 : bool LtgLocalTime(long rtime,LtTm& rtm)
     171             : {
     172           8 :     if (rtime < 0)
     173             :     {
     174           0 :         return false;
     175             :     }
     176             : 
     177           8 :     if ((rtime > 3 * DAY_SEC)&&(rtime < LONG_MAX - 3 * DAY_SEC))
     178             :     {
     179           8 :         TimeZone* pLocalZone = TimeZone::createDefault();
     180           8 :         long offset = (pLocalZone->getRawOffset())/1000;
     181           8 :         delete pLocalZone;
     182           8 :         long ltime = rtime + offset;
     183           8 :         return LtgGmTime(ltime,rtm);
     184             :     }
     185           0 :     return false;
     186             : };
     187             : 
     188             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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