dlls/msvcrt/time.c

   1 /*
   2  * msvcrt.dll date/time functions
   3  *
   4  * Copyright 1996,1998 Marcus Meissner
   5  * Copyright 1996 Jukka Iivonen
   6  * Copyright 1997,2000 Uwe Bonnes
   7  * Copyright 2000 Jon Griffiths
   8  */
   9 #include <time.h>
  10 #include <sys/times.h>
  11 #include "msvcrt.h"
  12
  13 DEFAULT_DEBUG_CHANNEL(msvcrt);
  14
  15 typedef struct __MSVCRT_timeb
  16 {
  17   time_t  time;
  18   unsigned short  millitm;
  19   short   timezone;
  20   short   dstflag;
  21 } MSVCRT_timeb;
  22
  23
  24 /* INTERNAL: Return formatted current time/date */
  25 char* msvcrt_get_current_time(char* out, const char* format)
  26 {
  27   static const time_t bad_time = (time_t)-1;
  28   time_t t;
  29   struct tm *_tm = NULL;
  30   char *retval = NULL;
  31
  32   if (time(&t) != bad_time && (_tm = localtime(&t)) &&
  33       strftime(out,9,format,_tm) == 8)
  34     retval = out;
  35   if (_tm)
  36     MSVCRT_free(_tm);
  37   return retval;
  38 }
  39
  40 /**********************************************************************
  41  *              _strdate (MSVCRT.@)
  42  */
  43 char* _strdate(char* date)
  44 {
  45   return msvcrt_get_current_time(date,"%m/%d/%y");
  46 }
  47
  48 /*********************************************************************
  49  *              _strtime (MSVCRT.@)
  50  */
  51 char* _strtime(char* date)
  52 {
  53   return msvcrt_get_current_time(date,"%H:%M:%S");
  54 }
  55
  56 /*********************************************************************
  57  *              clock (MSVCRT.@)
  58  */
  59 clock_t MSVCRT_clock(void)
  60 {
  61   struct tms alltimes;
  62   clock_t res;
  63
  64   times(&alltimes);
  65   res = alltimes.tms_utime + alltimes.tms_stime +
  66         alltimes.tms_cutime + alltimes.tms_cstime;
  67   /* FIXME: We need some symbolic representation for CLOCKS_PER_SEC,
  68    *  10 holds only for Windows/Linux_i86)
  69    */
  70   return 10*res;
  71 }
  72
  73 /*********************************************************************
  74  *              difftime (MSVCRT.@)
  75  */
  76 double MSVCRT_difftime(time_t time1, time_t time2)
  77 {
  78     return (double)(time1 - time2);
  79 }
  80
  81 /*********************************************************************
  82  *              time (MSVCRT.@)
  83  */
  84 time_t MSVCRT_time(time_t* buf)
  85 {
  86   time_t curtime = time(NULL);
  87   return buf ? *buf = curtime : curtime;
  88 }
  89
  90 /*********************************************************************
  91  *              _ftime (MSVCRT.@)
  92  */
  93 void _ftime(MSVCRT_timeb* buf)
  94 {
  95   buf->time = MSVCRT_time(NULL);
  96   buf->millitm = 0; /* FIXME */
  97   buf->timezone = 0;
  98   buf->dstflag = 0;
  99 }