usr/src/lib/libast/common/regex/regstat.c

   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*
  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 }