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Annotation of embedaddon/curl/src/tool_strdup.c, revision 1.1.1.1

1.1       misho       1: /***************************************************************************
                      2:  *                                  _   _ ____  _
                      3:  *  Project                     ___| | | |  _ \| |
                      4:  *                             / __| | | | |_) | |
                      5:  *                            | (__| |_| |  _ <| |___
                      6:  *                             \___|\___/|_| \_\_____|
                      7:  *
                      8:  * Copyright (C) 1998 - 2015, 2017, 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 https://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:  ***************************************************************************/
                     22: #include "tool_strdup.h"
                     23: 
                     24: #ifndef HAVE_STRDUP
                     25: char *strdup(const char *str)
                     26: {
                     27:   size_t len;
                     28:   char *newstr;
                     29: 
                     30:   if(!str)
                     31:     return (char *)NULL;
                     32: 
                     33:   len = strlen(str);
                     34: 
                     35:   if(len >= ((size_t)-1) / sizeof(char))
                     36:     return (char *)NULL;
                     37: 
                     38:   newstr = malloc((len + 1)*sizeof(char));
                     39:   if(!newstr)
                     40:     return (char *)NULL;
                     41: 
                     42:   memcpy(newstr, str, (len + 1)*sizeof(char));
                     43: 
                     44:   return newstr;
                     45: 
                     46: }
                     47: #endif