1: /* Define function and variables for the obsolete <regexp.h> interface.
    2:    Copyright (C) 1996, 2000 Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4:    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
    5: 
    6:    The GNU C Library is free software; you can redistribute it and/or
    7:    modify it under the terms of the GNU Lesser General Public
    8:    License as published by the Free Software Foundation; either
    9:    version 2.1 of the License, or (at your option) any later version.
   10: 
   11:    The GNU C Library is distributed in the hope that it will be useful,
   12:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   13:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   14:    Lesser General Public License for more details.
   15: 
   16:    You should have received a copy of the GNU Lesser General Public
   17:    License along with the GNU C Library; if not, write to the Free
   18:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   19:    02111-1307 USA.  */
   20: 
   21: #define __DO_NOT_DEFINE_COMPILE
   22: #include <regexp.h>
   23: 
   24: /* Define the variables used for the interface.  */
   25: char *loc1;
   26: char *loc2;
   27: 
   28: /* Although we do not support the use we define this variable as well.  */
   29: char *locs;
   30: 
   31: 
   32: /* Find the next match in STRING.  The compiled regular expression is
   33:    found in the buffer starting at EXPBUF.  `loc1' will return the
   34:    first character matched and `loc2' points to the next unmatched
   35:    character.  */
   36: extern int __step (const char *string, const char *expbuf);
   37: int
   38: __step (const char *string, const char *expbuf)
   39: {
   40:   regmatch_t match;     /* We only need info about the full match.  */
   41: 
   42:   expbuf += __alignof (regex_t *);
   43:   expbuf -= (expbuf - ((const char *) 0)) % __alignof__ (regex_t *);
   44: 
   45:   if (__regexec ((const regex_t *) expbuf, string, 1, &match, REG_NOTEOL)
   46:       == REG_NOMATCH)
   47:     return 0;
   48: 
   49:   loc1 = (char *) string + match.rm_so;
   50:   loc2 = (char *) string + match.rm_eo;
   51:   return 1;
   52: }
   53: weak_alias (__step, step)
   54: 
   55: 
   56: /* Match the beginning of STRING with the compiled regular expression
   57:    in EXPBUF.  If the match is successful `loc2' will contain the
   58:    position of the first unmatched character.  */
   59: extern int __advance (const char *string, const char *expbuf);
   60: int
   61: __advance (const char *string, const char *expbuf)
   62: {
   63:   regmatch_t match;     /* We only need info about the full match.  */
   64: 
   65:   expbuf += __alignof__ (regex_t *);
   66:   expbuf -= (expbuf - ((const char *) 0)) % __alignof__ (regex_t *);
   67: 
   68:   if (__regexec ((const regex_t *) expbuf, string, 1, &match, REG_NOTEOL)
   69:       == REG_NOMATCH
   70:       /* We have to check whether the check is at the beginning of the
   71:          buffer.  */
   72:       || match.rm_so != 0)
   73:     return 0;
   74: 
   75:   loc2 = (char *) string + match.rm_eo;
   76:   return 1;
   77: }
   78: weak_alias (__advance, advance)