1/* Implement the xstrndup function. 2 Copyright (C) 2005 Free Software Foundation, Inc. 3 Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>. 4 5This file is part of the libiberty library. 6Libiberty is free software; you can redistribute it and/or 7modify it under the terms of the GNU Library General Public 8License as published by the Free Software Foundation; either 9version 2 of the License, or (at your option) any later version. 10 11Libiberty is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14Library General Public License for more details. 15 16You should have received a copy of the GNU Library General Public 17License along with libiberty; see the file COPYING.LIB. If 18not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 19Boston, MA 02110-1301, USA. */ 20 21/* 22 23@deftypefn Replacement char* xstrndup (const char *@var{s}, size_t @var{n}) 24 25Returns a pointer to a copy of @var{s} with at most @var{n} characters 26without fail, using @code{xmalloc} to obtain memory. The result is 27always NUL terminated. 28 29@end deftypefn 30 31*/ 32 33#ifdef HAVE_CONFIG_H 34#include "config.h" 35#endif 36#include <sys/types.h> 37#ifdef HAVE_STRING_H 38#include <string.h> 39#else 40# ifdef HAVE_STRINGS_H 41# include <strings.h> 42# endif 43#endif 44#include "ansidecl.h" 45#include "libiberty.h" 46 47char * 48xstrndup (const char *s, size_t n) 49{ 50 char *result; 51 size_t len = strlen (s); 52 53 if (n < len) 54 len = n; 55 56 result = XNEWVEC (char, len + 1); 57 58 result[len] = '\0'; 59 return (char *) memcpy (result, s, len); 60} 61