1  /*
       2   * wordfnmatch.c: fnmatch on word boundaries
       3   *
       4   * Copyright (C) 2001, 2003, 2008 Colin Watson.
       5   *
       6   * This file is part of man-db.
       7   *
       8   * man-db is free software; you can redistribute it and/or modify it
       9   * under the terms of the GNU General Public License as published by
      10   * the Free Software Foundation; either version 2 of the License, or
      11   * (at your option) any later version.
      12   *
      13   * man-db is distributed in the hope that it will be useful, but
      14   * WITHOUT ANY WARRANTY; without even the implied warranty of
      15   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      16   * GNU General Public License for more details.
      17   *
      18   * You should have received a copy of the GNU General Public License
      19   * along with man-db; if not, write to the Free Software Foundation,
      20   * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
      21   */
      22  
      23  #ifdef HAVE_CONFIG_H
      24  #  include "config.h"
      25  #endif /* HAVE_CONFIG_H */
      26  
      27  #include <stdbool.h>
      28  #include <stdlib.h>
      29  #include <ctype.h>
      30  
      31  #include "fnmatch.h"
      32  #include "xalloc.h"
      33  
      34  #include "manconfig.h"
      35  
      36  #include "wordfnmatch.h"
      37  
      38  /* TODO: How on earth do we allow multiple-word matches without
      39   * reimplementing fnmatch()?
      40   */
      41  bool word_fnmatch (const char *pattern, const char *string)
      42  {
      43  	char *dupstring = xstrdup (string);
      44  	const char *begin = dupstring;
      45  	char *p;
      46  
      47  	for (p = dupstring; *p; p++) {
      48  		if (CTYPE (isalpha, *p) || *p == '_')
      49  			continue;
      50  
      51  		/* Check for multiple non-word characters in a row. */
      52  		if (p <= begin + 1)
      53  			begin++;
      54  		else {
      55  			*p = '\0';
      56  			if (fnmatch (pattern, begin, FNM_CASEFOLD) == 0) {
      57  				free (dupstring);
      58  				return true;
      59  			}
      60  			begin = p + 1;
      61  		}
      62  	}
      63  
      64  	free (dupstring);
      65  	return false;
      66  }