src/regex/regfree.c

   1 #if defined(__MWERKS__) && !defined(__MACH__)
   2 typedef long off_t ;
   3 #else
   4 #include <sys/types.h>
   5 #endif
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include "regex.h"
   9
  10 #include "utils.h"
  11 #include "regex2.h"
  12
  13 /*
  14  - regfree - free everything
  15  = extern void regfree(regex_t *);
  16  */
  17 void
  18 regfree(preg)
  19 regex_t *preg;
  20 {
  21         register struct re_guts *g;
  22
  23         if (preg->re_magic != MAGIC1)   /* oops */
  24                 return;                 /* nice to complain, but hard */
  25
  26         g = preg->re_g;
  27         if (g == NULL || g->magic != MAGIC2)    /* oops again */
  28                 return;
  29         preg->re_magic = 0;             /* mark it invalid */
  30         g->magic = 0;                   /* mark it invalid */
  31
  32         if (g->strip != NULL)
  33                 free((char *)g->strip);
  34         if (g->sets != NULL)
  35                 free((char *)g->sets);
  36         if (g->setbits != NULL)
  37                 free((char *)g->setbits);
  38         if (g->must != NULL)
  39                 free(g->must);
  40         free((char *)g);
  41 }