1/* Implement the stpncpy function. 2 Copyright (C) 2003 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 Supplemental char* stpncpy (char *@var{dst}, const char *@var{src}, size_t @var{len}) 24 25Copies the string @var{src} into @var{dst}, copying exactly @var{len} 26and padding with zeros if necessary. If @var{len} < strlen(@var{src}) 27then return @var{dst} + @var{len}, otherwise returns @var{dst} + 28strlen(@var{src}). 29 30@end deftypefn 31 32*/ 33 34#include <ansidecl.h> 35#include <stddef.h> 36 37extern size_t strlen (const char *); 38extern char *strncpy (char *, const char *, size_t); 39 40char * 41stpncpy (char *dst, const char *src, size_t len) 42{ 43 size_t n = strlen (src); 44 if (n > len) 45 n = len; 46 return strncpy (dst, src, len) + n; 47} 48