lib/libc/string/wcsdup.c

   1 /*      $NetBSD: wcsdup.c,v 1.2 2006/08/26 22:45:52 christos Exp $      */
   2
   3 /*
   4  * Copyright (C) 2006 Aleksey Cheusov
   5  *
   6  * This material is provided "as is", with absolutely no warranty expressed
   7  * or implied. Any use is at your own risk.
   8  *
   9  * Permission to use or copy this software for any purpose is hereby granted
  10  * without fee. Permission to modify the code and to distribute modified
  11  * code is also granted without any restrictions.
  12  */
  13
  14 #include <sys/cdefs.h>
  15
  16 #if defined(LIBC_SCCS) && !defined(lint)
  17 __RCSID("$NetBSD: wcsdup.c,v 1.2 2006/08/26 22:45:52 christos Exp $");
  18 #endif /* LIBC_SCCS and not lint */
  19
  20 #include "namespace.h"
  21 #include <stdlib.h>
  22 #include <assert.h>
  23 #include <wchar.h>
  24
  25 __weak_alias(wcsdup,_wcsdup)
  26
  27 wchar_t *
  28 wcsdup(const wchar_t *str)
  29 {
  30         wchar_t *copy;
  31         size_t len;
  32
  33         _DIAGASSERT(str != NULL);
  34
  35         len = wcslen(str) + 1;
  36         copy = malloc(len * sizeof (wchar_t));
  37
  38         if (!copy)
  39                 return NULL;
  40
  41         return wmemcpy(copy, str, len);
  42 }