curl/lib/strdup.c

   1 /***************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
   9  *
  10  * This software is licensed as described in the file COPYING, which
  11  * you should have received as part of this distribution. The terms
  12  * are also available at http://curl.haxx.se/docs/copyright.html.
  13  *
  14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  15  * copies of the Software, and permit persons to whom the Software is
  16  * furnished to do so, under the terms of the COPYING file.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  * $Id: strdup.c,v 1.5 2008-02-06 19:01:13 yangtse Exp $
  22  ***************************************************************************/
  23
  24 #include "setup.h"
  25 #include "strdup.h"
  26
  27 #ifndef HAVE_STRDUP
  28 char *curlx_strdup(const char *str)
  29 {
  30   size_t len;
  31   char *newstr;
  32
  33   if(!str)
  34     return (char *)NULL;
  35
  36   len = strlen(str);
  37
  38   if(len >= ((size_t)-1) / sizeof(char))
  39     return (char *)NULL;
  40
  41   newstr = (char *) malloc((len+1)*sizeof(char));
  42   if(!newstr)
  43     return (char *)NULL;
  44
  45   memcpy(newstr,str,(len+1)*sizeof(char));
  46
  47   return newstr;
  48
  49 }
  50 #endif