regfree.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:1k
- #include <my_global.h>
- #include <sys/types.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include "my_regex.h"
- #include "utils.h"
- #include "regex2.h"
- /*
- - regfree - free everything
- = extern void regfree(regex_t *);
- */
- void
- my_regfree(preg)
- my_regex_t *preg;
- {
- register struct re_guts *g;
- if (preg->re_magic != MAGIC1) /* oops */
- return; /* nice to complain, but hard */
- g = preg->re_g;
- if (g == NULL || g->magic != MAGIC2) /* oops again */
- return;
- preg->re_magic = 0; /* mark it invalid */
- g->magic = 0; /* mark it invalid */
- if (g->strip != NULL)
- free((char *)g->strip);
- if (g->sets != NULL)
- free((char *)g->sets);
- if (g->setbits != NULL)
- free((char *)g->setbits);
- if (g->must != NULL)
- free(g->must);
- free((char *)g);
- }