3 * $Id: regexp.c,v 1.1 2002/08/11 12:58:09 mdw Exp $
5 * Matches regular expressions
7 * (c) 2002 Mark Wooding
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Anag: a simple wordgame helper.
14 * Anag is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * Anag is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with Anag; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 /*----- Revision history --------------------------------------------------*
32 * Revision 1.1 2002/08/11 12:58:09 mdw
33 * Added support for regular expression matching, if supported by the C
36 * Revision 1.1 2001/02/04 17:14:42 mdw
41 /*----- Header files ------------------------------------------------------*/
54 /*----- Data structures ---------------------------------------------------*/
56 typedef struct node_regexp
{
62 /*----- Main code ---------------------------------------------------------*/
64 /* --- Node matcher --- */
66 static int n_regexp(node
*nn
, const char *p
, size_t sz
)
68 node_regexp
*n
= (node_regexp
*)nn
;
71 switch (e
= regexec(&n
->rx
, p
, 0, 0, 0)) {
78 regerror(e
, &n
->rx
, buf
, sizeof(buf
));
79 die("error matching regexp `%s' against `%s': %s",
86 /* --- Node creation --- */
88 node
*regexp(const char *const *av
)
90 node_regexp
*n
= xmalloc(sizeof(*n
));
93 if ((e
= regcomp(&n
->rx
, av
[0],
94 REG_EXTENDED
| REG_ICASE
| REG_NOSUB
)) != 0) {
96 regerror(e
, &n
->rx
, buf
, sizeof(buf
));
97 die("bad regular expression `%s': %s", av
[0], buf
);
102 /*----- That's all, folks -------------------------------------------------*/