src/regex/regfree.c

   1 #include <sys/types.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <regex.h>
   5
   6 #include "utils.h"
   7 #include "regex2.h"
   8
   9 /*
  10  - regfree - free everything
  11  = extern void regfree(regex_t *);
  12  */
  13 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 }