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
  10 #include <time.h>
  11 #include <sys/times.h>
  12
  13 #include "msvcrt.h"
  14 #include "msvcrt/sys/timeb.h"
  15 #include "msvcrt/time.h"
  16
  17
  18 DEFAULT_DEBUG_CHANNEL(msvcrt);
  19
  20
  21 /* INTERNAL: Return formatted current time/date */
  22 char* msvcrt_get_current_time(char* out, const char* format)
  23 {
  24   static const MSVCRT_time_t bad_time = (MSVCRT_time_t)-1;
  25   time_t t;
  26   struct tm *_tm = NULL;
  27   char *retval = NULL;
  28
  29   if (time(&t) != bad_time && (_tm = localtime(&t)) &&
  30       strftime(out,9,format,_tm) == 8)
  31     retval = out;
  32   return retval;
  33 }
  34
  35 /**********************************************************************
  36  *              mktime (MSVCRT.@)
  37  */
  38 MSVCRT_time_t MSVCRT_mktime(struct MSVCRT_tm *t)
  39 {
  40   MSVCRT_time_t res;
  41   struct tm tm;
  42
  43   tm.tm_sec = t->tm_sec;
  44   tm.tm_min = t->tm_min;
  45   tm.tm_hour = t->tm_hour;
  46   tm.tm_mday = t->tm_mday;
  47   tm.tm_mon = t->tm_mon;
  48   tm.tm_year = t->tm_year;
  49   tm.tm_isdst = t->tm_isdst;
  50   res = mktime(&tm);
  51   if (res != -1)
  52   {
  53       t->tm_sec = tm.tm_sec;
  54       t->tm_min = tm.tm_min;
  55       t->tm_hour = tm.tm_hour;
  56       t->tm_mday = tm.tm_mday;
  57       t->tm_mon = tm.tm_mon;
  58       t->tm_year = tm.tm_year;
  59       t->tm_isdst = tm.tm_isdst;
  60   }
  61   return res;
  62 }
  63
  64 /**********************************************************************
  65  *              _strdate (MSVCRT.@)
  66  */
  67 char* _strdate(char* date)
  68 {
  69   return msvcrt_get_current_time(date,"%m/%d/%y");
  70 }
  71
  72 /*********************************************************************
  73  *              _strtime (MSVCRT.@)
  74  */
  75 char* _strtime(char* date)
  76 {
  77   return msvcrt_get_current_time(date,"%H:%M:%S");
  78 }
  79
  80 /*********************************************************************
  81  *              clock (MSVCRT.@)
  82  */
  83 MSVCRT_clock_t MSVCRT_clock(void)
  84 {
  85   struct tms alltimes;
  86   clock_t res;
  87
  88   times(&alltimes);
  89   res = alltimes.tms_utime + alltimes.tms_stime +
  90         alltimes.tms_cutime + alltimes.tms_cstime;
  91   /* FIXME: We need some symbolic representation for CLOCKS_PER_SEC,
  92    *  10 holds only for Windows/Linux_i86)
  93    */
  94   return 10*res;
  95 }
  96
  97 /*********************************************************************
  98  *              difftime (MSVCRT.@)
  99  */
 100 double MSVCRT_difftime(MSVCRT_time_t time1, MSVCRT_time_t time2)
 101 {
 102     return (double)(time1 - time2);
 103 }
 104
 105 /*********************************************************************
 106  *              time (MSVCRT.@)
 107  */
 108 MSVCRT_time_t MSVCRT_time(MSVCRT_time_t* buf)
 109 {
 110   MSVCRT_time_t curtime = time(NULL);
 111   return buf ? *buf = curtime : curtime;
 112 }
 113
 114 /*********************************************************************
 115  *              _ftime (MSVCRT.@)
 116  */
 117 void _ftime(struct _timeb *buf)
 118 {
 119   buf->time = MSVCRT_time(NULL);
 120   buf->millitm = 0; /* FIXME */
 121   buf->timezone = 0;
 122   buf->dstflag = 0;
 123 }