mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/* Implement the strndup function.
|
|
Copyright (C) 2005-2017 Free Software Foundation, Inc.
|
|
Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>.
|
|
|
|
This file is part of the libiberty library.
|
|
Libiberty is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
Libiberty is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with libiberty; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
|
|
Boston, MA 02110-1301, USA. */
|
|
|
|
/*
|
|
|
|
@deftypefn Extension char* strndup (const char *@var{s}, size_t @var{n})
|
|
|
|
Returns a pointer to a copy of @var{s} with at most @var{n} characters
|
|
in memory obtained from @code{malloc}, or @code{NULL} if insufficient
|
|
memory was available. The result is always NUL terminated.
|
|
|
|
@end deftypefn
|
|
|
|
*/
|
|
|
|
#include "ansidecl.h"
|
|
#include <stddef.h>
|
|
|
|
extern size_t strnlen (const char *s, size_t maxlen);
|
|
extern PTR malloc (size_t);
|
|
extern PTR memcpy (PTR, const PTR, size_t);
|
|
|
|
char *
|
|
strndup (const char *s, size_t n)
|
|
{
|
|
char *result;
|
|
size_t len = strnlen (s, n);
|
|
|
|
result = (char *) malloc (len + 1);
|
|
if (!result)
|
|
return 0;
|
|
|
|
result[len] = '\0';
|
|
return (char *) memcpy (result, s, len);
|
|
}
|