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/contrib/ntp/libntp/uglydate.c

https://bitbucket.org/freebsd/freebsd-head/
C | 48 lines | 37 code | 4 blank | 7 comment | 4 complexity | 564b9f7ec75b94af0e33e7a078bcb177 MD5 | raw file
 1/*
 2 * uglydate - convert a time stamp to something barely readable
 3 *	      The string returned is 37 characters long.
 4 */
 5#include <stdio.h>
 6
 7#include "ntp_fp.h"
 8#include "ntp_unixtime.h"
 9#include "lib_strbuf.h"
10#include "ntp_stdlib.h"
11
12
13char *
14uglydate(
15	l_fp *ts
16	)
17{
18	char *bp;
19	char *timep;
20	struct tm *tm;
21	time_t sec;
22	long msec;
23	int year;
24
25	timep = ulfptoa(ts, 6);		/* returns max 17 characters */
26	LIB_GETBUF(bp);
27	sec = ts->l_ui - JAN_1970;
28	msec = ts->l_uf / 4294967;	/* fract / (2**32/1000) */
29	tm = gmtime(&sec);
30	if (ts->l_ui == 0) {
31		/*
32		 * Probably not a real good thing to do.  Oh, well.
33		 */
34		year = 0;
35		tm->tm_yday = 0;
36		tm->tm_hour = 0;
37		tm->tm_min = 0;
38		tm->tm_sec = 0;
39	} else {
40		year = tm->tm_year;
41		while (year >= 100)
42		    year -= 100;
43	}
44	(void) sprintf(bp, "%17s %02d:%03d:%02d:%02d:%02d.%03ld",
45		       timep, year, tm->tm_yday, tm->tm_hour, tm->tm_min,
46		       tm->tm_sec, msec);
47	return bp;
48}