xref: /PHP-5.4/ext/ereg/regex/regfree.c (revision 39b58500)
1 #include <sys/types.h>
2 #include <stdio.h>
3 #include <stdlib.h>
4 
5 #include "regex.h"
6 #include "utils.h"
7 #include "regex2.h"
8 
9 /*
10  - regfree - free everything
11  = API_EXPORT(void) regfree(regex_t *);
12  */
13 API_EXPORT(void)
14 regfree(preg)
15 regex_t *preg;
16 {
17 	register struct re_guts *g;
18 
19 	if (preg->re_magic != MAGIC1)	/* oops */
20 		return;			/* nice to complain, but hard */
21 
22 	g = preg->re_g;
23 	if (g == NULL || g->magic != MAGIC2)	/* oops again */
24 		return;
25 	preg->re_magic = 0;		/* mark it invalid */
26 	g->magic = 0;			/* mark it invalid */
27 
28 	if (g->strip != NULL)
29 		free((char *)g->strip);
30 	if (g->sets != NULL)
31 		free((char *)g->sets);
32 	if (g->setbits != NULL)
33 		free((char *)g->setbits);
34 	if (g->must != NULL)
35 		free(g->must);
36 	free((char *)g);
37 }
38