1 /* Implement the xstrndup function. 2 Copyright (C) 2005 Free Software Foundation, Inc. 3 Written by Kaveh R. Ghazi <ghazi (at) caip.rutgers.edu>. 4 5 This file is part of the libiberty library. 6 Libiberty is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Library General Public 8 License as published by the Free Software Foundation; either 9 version 2 of the License, or (at your option) any later version. 10 11 Libiberty is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Library General Public License for more details. 15 16 You should have received a copy of the GNU Library General Public 17 License along with libiberty; see the file COPYING.LIB. If 18 not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, 19 Boston, MA 02110-1301, USA. */ 20 21 /* 22 23 @deftypefn Replacement char* xstrndup (const char *@var{s}, size_t @var{n}) 24 25 Returns a pointer to a copy of @var{s} with at most @var{n} characters 26 without fail, using @code{xmalloc} to obtain memory. The result is 27 always 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 47 char * 48 xstrndup (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
