1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
/* date.c bradkemp@indusriver.com */
#include <time.h>
#include <stdio.h>
#include <string.h>
static const char invalid_date[] = "Invalid date %s\n";
int do_date(int argc, char * argv[])
{
time_t tm;
struct tm tm_time;
time(&tm);
memcpy(&tm_time, localtime(&tm), sizeof(tm_time));
if (argc > 1) {
int nr;
nr = sscanf(argv[1], "%2d%2d%2d%2d%d",
&(tm_time.tm_mon),
&(tm_time.tm_mday),
&(tm_time.tm_hour),
&(tm_time.tm_min), &(tm_time.tm_year));
if (nr < 4 || nr > 5) {
fprintf(stderr, invalid_date, argv[1]);
return(0);
}
/* correct for century - minor Y2K problem here? */
if (tm_time.tm_year >= 1900)
tm_time.tm_year -= 1900;
/* adjust date */
tm_time.tm_mon -= 1;
if((tm = mktime(&tm_time)) < 0) {
fprintf(stderr, invalid_date, argv[1]);
return(0);
}
if(stime(&tm) < 0) {
fprintf(stderr, "Unable to set date\n");
return(0);
}
return (0);
}
printf("%s\n",asctime(&tm_time));
return(0);
}
|
