1 /* 2 * systemuhr.c 3 * 4 * Autor: H.Drachenfels 5 * Erstellt am: 20.1.2018 6 */

7

8 #include "systemuhr.h"

9 #include "uhr_impl.h"

10

11 #include <stdlib.h>

12 #include <time.h>

13

14 struct systemuhr

15 {

16 uhr interface;

17 };

18

19 static void destruct(uhr * const u);

20 static void ablesen(const uhr * const u, unsigned *s, unsigned *m);

21

22 uhr *new_systemuhr()

23 {

24 struct systemuhr *this_p = (struct systemuhr*) malloc(sizeof (struct systemuhr));

25 if (!this_p) return NULL;

26

27 this_p->interface.destruct = destruct;

28 this_p->interface.ablesen = ablesen;

29 return &this_p->interface;

30 }

31

32 static void destruct(uhr * const u)

33 {

34 free(u);

35 }

36

37 static void ablesen(const uhr * const u, unsigned *s, unsigned *m)

38 {

39 time_t t = time(0);

40 struct tm *lt = localtime(&t);

41

42 *s = lt->tm_hour;

43

44 if (m)

45 {

46 *m = lt->tm_min;

47 }

48 }

49