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*                 Eclipse Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*          http://www.eclipse.org/org/documents/epl-v10.html           *
11*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
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 * Glenn Fowler
25 * AT&T Bell Laboratories
26 *
27 * time conversion support
28 */
29
30#include <ast.h>
31#include <tm.h>
32#include <ctype.h>
33
34/*
35 * return the tab table index that matches s ignoring case and .'s
36 * tm_data.format checked if tminfo.format!=tm_data.format
37 *
38 * ntab and nsuf are the number of elements in tab and suf,
39 * -1 for 0 sentinel
40 *
41 * all isalpha() chars in str must match
42 * suf is a table of nsuf valid str suffixes
43 * if e is non-null then it will point to first unmatched char in str
44 * which will always be non-isalpha()
45 */
46
47int
48tmlex(register const char* s, char** e, char** tab, int ntab, char** suf, int nsuf)
49{
50	register char**	p;
51	register char*	x;
52	register int	n;
53
54	for (p = tab, n = ntab; n-- && (x = *p); p++)
55		if (*x && *x != '%' && tmword(s, e, x, suf, nsuf))
56			return p - tab;
57	if (tm_info.format != tm_data.format && tab >= tm_info.format && tab < tm_info.format + TM_NFORM)
58	{
59		tab = tm_data.format + (tab - tm_info.format);
60		if (suf && tab >= tm_info.format && tab < tm_info.format + TM_NFORM)
61			suf = tm_data.format + (suf - tm_info.format);
62		for (p = tab, n = ntab; n-- && (x = *p); p++)
63			if (*x && *x != '%' && tmword(s, e, x, suf, nsuf))
64				return p - tab;
65	}
66	return -1;
67}
68