newlib/libc/argz/argz_add_sep.c

   1 /* Copyright (C) 2002 by  Red Hat, Incorporated. All rights reserved.
   2  *
   3  * Permission to use, copy, modify, and distribute this software
   4  * is freely granted, provided that this notice is preserved.
   5  */
   6
   7 #include <errno.h>
   8 #include <sys/types.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <argz.h>
  12
  13 error_t
  14 argz_add_sep (char **argz,
  15        size_t *argz_len,
  16        const char *str,
  17        int sep)
  18 {
  19   char *str_argz = 0;
  20   size_t str_argz_len = 0;
  21   size_t last = *argz_len;
  22
  23   argz_create_sep (str, sep, &str_argz, &str_argz_len);
  24
  25   if (str_argz_len)
  26     {
  27       *argz_len += str_argz_len;
  28
  29       if(!(*argz = (char *)realloc(*argz, *argz_len)))
  30         return ENOMEM;
  31
  32       memcpy(*argz + last, str_argz, str_argz_len);
  33     }
  34   return 0;
  35 }