kc3-lang/gnulib/lib/rpmatch.c

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• Hash : ee369d4b
  Author :
  Date : 1998-07-04T01:44:01
  

  remove ifdef around inclusion of regex.h altogether!!
  

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• lib/rpmatch.c

• /* Determine whether string value is affirmation or negative response
     according to current locale's data.
     Copyright (C) 1996, 1998 Free Software Foundation, Inc.
  
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2, or (at your option)
     any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software Foundation,
     Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  
  #if HAVE_CONFIG_H
  # include <config.h>
  #endif
  
  #if STDC_HEADERS || _LIBC
  # include <stddef.h>
  # include <stdlib.h>
  #else
  # ifndef NULL
  #  define NULL 0
  # endif
  #endif
  
  #include <sys/types.h>
  #include <regex.h>
  
  #if ENABLE_NLS
  # include <libintl.h>
  # define _(Text) gettext (Text)
  #else
  # define _(Text) Text
  #endif
  
  static int
  try (response, pattern, match, nomatch, lastp, re)
       const char *response;
       const char *pattern;
       const int match;
       const int nomatch;
       const char **lastp;
       regex_t *re;
  {
    if (pattern != *lastp)
      {
        /* The pattern has changed.  */
        if (*lastp)
  	{
  	  /* Free the old compiled pattern.  */
  	  regfree (re);
  	  *lastp = NULL;
  	}
        /* Compile the pattern and cache it for future runs.  */
        if (regcomp (re, pattern, REG_EXTENDED) != 0)
  	return -1;
        *lastp = pattern;
      }
  
    /* See if the regular expression matches RESPONSE.  */
    return regexec (re, response, 0, NULL, 0) == 0 ? match : nomatch;
  }
  
  
  int
  rpmatch (response)
       const char *response;
  {
    /* Match against one of the response patterns, compiling the pattern
       first if necessary.  */
  
    /* We cache the response patterns and compiled regexps here.  */
    static const char *yesexpr, *noexpr;
    static regex_t yesre, nore;
    int result;
  
    return ((result = try (response, _("^[yY]"), 1, 0,
  			 &yesexpr, &yesre))
  	  ? result
  	  : try (response, _("^[nN]"), 0, -1, &noexpr, &nore));
  }
  

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