mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.1 KiB
43 lines
1.1 KiB
15 years ago
|
|
||
|
|
|
||
|
|
/* Copyright 1998 by the Massachusetts Institute of Technology.
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify, and distribute this
|
||
|
|
* software and its documentation for any purpose and without
|
||
|
|
* fee is hereby granted, provided that the above copyright
|
||
|
|
* notice appear in all copies and that both that copyright
|
||
|
|
* notice and this permission notice appear in supporting
|
||
|
|
* documentation, and that the name of M.I.T. not be used in
|
||
|
|
* advertising or publicity pertaining to distribution of the
|
||
|
|
* software without specific, written prior permission.
|
||
|
|
* M.I.T. makes no representations about the suitability of
|
||
|
|
* this software for any purpose. It is provided "as is"
|
||
|
|
* without express or implied warranty.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "ares_setup.h"
|
||
|
|
#include "ares_strdup.h"
|
||
|
|
|
||
|
|
#ifndef HAVE_STRDUP
|
||
|
|
char *ares_strdup(const char *s1)
|
||
|
|
{
|
||
|
|
size_t sz;
|
||
|
|
char * s2;
|
||
|
|
|
||
|
|
if(s1) {
|
||
|
|
sz = strlen(s1);
|
||
|
|
if(sz < (size_t)-1) {
|
||
|
|
sz++;
|
||
|
|
if(sz < ((size_t)-1) / sizeof(char)) {
|
||
|
|
s2 = malloc(sz * sizeof(char));
|
||
|
|
if(s2) {
|
||
|
|
memcpy(s2, s1, sz * sizeof(char));
|
||
|
|
return s2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return (char *)NULL;
|
||
|
|
}
|
||
|
|
#endif
|