xref: /titanic_44/usr/src/lib/libast/common/regex/regstat.c (revision 3e14f97f673e8a630f076077de35afdd43dc1587) 
1 /***********************************************************************
2 *                                                                      *
3 *               This software is part of the ast package               *
4 *          Copyright (c) 1985-2010 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 /*
25  * return p stat info
26  */
27 
28 #include "reglib.h"
29 
30 regstat_t*
regstat(const regex_t * p)31 regstat(const regex_t* p)
32 {
33 	register Rex_t*	e;
34 
35 	e = p->env->rex;
36 	if (e && e->type == REX_BM)
37 		e = e->next;
38 	if (e && e->type == REX_BEG)
39 		e = e->next;
40 	if (e && e->type == REX_STRING)
41 		e = e->next;
42 	if (!e || e->type == REX_END && !e->next)
43 		p->env->stats.re_flags |= REG_LITERAL;
44 	p->env->stats.re_record = (p && p->env && p->env->rex->type == REX_BM) ? p->env->rex->re.bm.size : -1;
45 	return &p->env->stats;
46 }
47