//Sample code file: var/ndk/webBuildengine/tmp/viewable_samples/bae5da4a-b842-4667-9fdf-ef3d868564d0/misc/timedate/timedate.c

/*************************************************************************

  Copyright (c) 1995 1997 Novell, Inc.  All Rights Reserved.

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  support tools provided under the agreement, and disclaims all other
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/**************************************************************************
   TIMEDATE.C
***************************************************************************

   TIMEDATE.C demonstrates NWUnpackDateTime() and NWPackDateTime()

**************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <ntypes.h>
#include <nwcalls.h>

/*-------------------------------------------------------------------
** Day parameters.  This is the bit breakdown for datebytes.
**       YYYYYYYMMMMDDDDD    They are masked with the following defines
**          7    4   5
**  The year is figured from 1980.
*/
#define DAY        0x001F
#define MONTH      0x01E0
#define YEAR       0xFE00
#define YRSTANDARD 1980

/*-------------------------------------------------------------------
** Time parameters.  This is the bit breakdown for timebytes.
**       HHHHHMMMMMMSSSSS  They are masked with the following defines.
**         5     6    5
*/
#define MINUTES 0x07E0
#define SECONDS 0x001F

/****************************************************************************
** Main program
*/
int main(void)
{
   nuint32   packedtime, temp;
   nuint16   timebytes;
   nuint16   datebytes;
   NW_DATE   nwd;
   NW_TIME   nwt;
   struct tm *t;
   time_t    ltime;

   /* Get the time */

   time(&ltime);
   t = localtime(&ltime);

   /* Make some adjustments.  The tm_mon field in tm begins at 0, while
      the corresponding field in NW_DATE begins with 1, therefore
      add 1 to tm_mon.

      The tm_year field holds the number of years since 1900, while the
      function NWPackDateTime expects the complete year, so add 1900.  */

   t->tm_mon  += 1;
   t->tm_year += 1900;

   /* Print date and time */

   printf("Date and time before packing  > %d/%d/%d   %d:%02d:%02d\n",
          t->tm_mon,
          t->tm_mday,
          t->tm_year,
          t->tm_hour,
          t->tm_min,
          t->tm_sec);

   /* Fill in the NW_DATE and NW_TIME structures */

   nwd.day     = t->tm_mday;
   nwd.month   = t->tm_mon;
   nwd.year    = t->tm_year;
   nwt.hours   = t->tm_hour;
   nwt.minutes = t->tm_min;
   nwt.seconds = t->tm_sec;

   packedtime = NWPackDateTime(
                              /* pointer to NW_DATE (IN)*/ &nwd,
                              /* pointer to NW_TIME (IN)*/ &nwt);

   /* Manipulate and read packedtime value */

   timebytes = (nuint16)packedtime;
   temp = packedtime>>16;
   datebytes = (nuint16)temp;

   printf("Date and time after packing   > %d/%d/%d     %d:%02d:%02d\n",
          (datebytes & MONTH) >> 5,
          (datebytes & DAY),
          (datebytes >> 9)+YRSTANDARD,
          (timebytes >> 11),
          (timebytes & MINUTES) >> 5,
          (timebytes & SECONDS) * 2);

   NWUnpackDateTime(
                   /* packed date and time */ packedtime,
                   /* pointer to NW_DATE   */ &nwd,
                   /* pointer to NW_TIME   */ &nwt);

   printf("Date and time after unpacking > %d/%d/%d   %d:%02d:%02d\n",
          nwd.month,
          nwd.day,
          nwd.year,
          nwt.hours,
          nwt.minutes,
          nwt.seconds);

   return(0);
}