2 ** This file is in the public domain, so clarified as of
3 ** June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov).
5 ** $FreeBSD: src/lib/libc/stdtime/asctime.c,v 1.7.6.1 2001/03/05 11:37:20 obrien Exp $
6 ** $DragonFly: src/lib/libc/stdtime/asctime.c,v 1.5 2005/12/04 23:25:40 swildner Exp $
14 #include "namespace.h"
16 #include "un-namespace.h"
20 ** A la X3J11, with core dump avoidance.
25 asctime(const struct tm *timeptr)
27 static char result[3 * 2 + 5 * INT_STRLEN_MAXIMUM(int) +
29 return(asctime_r(timeptr, result));
33 asctime_r(const struct tm *timeptr, char *result)
35 static const char wday_name[][3] = {
36 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
38 static const char mon_name[][3] = {
39 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
40 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
43 ** Big enough for something such as
44 ** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
45 ** (two three-character abbreviations, five strings denoting integers,
46 ** three explicit spaces, two explicit colons, a newline,
47 ** and a trailing ASCII nul).
52 if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
54 else wn = wday_name[timeptr->tm_wday];
55 if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
57 else mn = mon_name[timeptr->tm_mon];
59 ** The X3J11-suggested format is
60 ** "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %d\n"
61 ** Since the .2 in 02.2d is ignored, we drop it.
63 sprintf(result, "%.3s %.3s%3d %02d:%02d:%02d %d\n",
65 timeptr->tm_mday, timeptr->tm_hour,
66 timeptr->tm_min, timeptr->tm_sec,
67 TM_YEAR_BASE + timeptr->tm_year);