1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#pragma prototyped
23/*
24 * strftime implementation
25 */
26
27#define strftime	______strftime
28
29#include <ast.h>
30#include <tm.h>
31
32#undef	strftime
33
34#undef	_def_map_ast
35#include <ast_map.h>
36
37#undef	_lib_strftime	/* we can pass X/Open */
38
39#if _lib_strftime
40
41NoN(strftime)
42
43#else
44
45#if defined(__EXPORT__)
46#define extern	__EXPORT__
47#endif
48
49extern size_t
50strftime(char* buf, size_t len, const char* format, const struct tm* tm)
51{
52	register char*	s;
53	time_t		t;
54	Tm_t		tl;
55
56	memset(&tl, 0, sizeof(tl));
57
58	/*
59	 * nl_langinfo() may call strftime() with bogus tm except for
60	 * one value -- what a way to go
61	 */
62
63	if (tm->tm_sec < 0 || tm->tm_sec > 60 ||
64	    tm->tm_min < 0 || tm->tm_min > 59 ||
65	    tm->tm_hour < 0 || tm->tm_hour > 23 ||
66	    tm->tm_wday < 0 || tm->tm_wday > 6 ||
67	    tm->tm_mday < 1 || tm->tm_mday > 31 ||
68	    tm->tm_mon < 0 || tm->tm_mon > 11 ||
69	    tm->tm_year < 0 || tm->tm_year > (2138 - 1900))
70	{
71		if (tm->tm_sec >= 0 && tm->tm_sec <= 60)
72			tl.tm_sec = tm->tm_sec;
73		if (tm->tm_min >= 0 && tm->tm_min <= 59)
74			tl.tm_min = tm->tm_min;
75		if (tm->tm_hour >= 0 && tm->tm_hour <= 23)
76			tl.tm_hour = tm->tm_hour;
77		if (tm->tm_wday >= 0 && tm->tm_wday <= 6)
78			tl.tm_wday = tm->tm_wday;
79		if (tm->tm_mday >= 0 && tm->tm_mday <= 31)
80			tl.tm_mday = tm->tm_mday;
81		if (tm->tm_mon >= 0 && tm->tm_mon <= 11)
82			tl.tm_mon = tm->tm_mon;
83		if (tm->tm_year >= 0 && tm->tm_year <= (2138 - 1900))
84			tl.tm_year = tm->tm_year;
85	}
86	else
87	{
88		tl.tm_sec = tm->tm_sec;
89		tl.tm_min = tm->tm_min;
90		tl.tm_hour = tm->tm_hour;
91		tl.tm_mday = tm->tm_mday;
92		tl.tm_mon = tm->tm_mon;
93		tl.tm_year = tm->tm_year;
94		tl.tm_wday = tm->tm_wday;
95		tl.tm_yday = tm->tm_yday;
96		tl.tm_isdst = tm->tm_isdst;
97	}
98	t = tmtime(&tl, TM_LOCALZONE);
99	if (!(s = tmfmt(buf, len, format, &t)))
100		return 0;
101	return s - buf;
102}
103
104#endif
105