1 /* Implement the stpncpy function. 2 Copyright (C) 2003, 2011 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 Supplemental char* stpncpy (char *@var{dst}, const char *@var{src}, @ 24 size_t @var{len}) 25 26 Copies the string @var{src} into @var{dst}, copying exactly @var{len} 27 and padding with zeros if necessary. If @var{len} < strlen(@var{src}) 28 then return @var{dst} + @var{len}, otherwise returns @var{dst} + 29 strlen(@var{src}). 30 31 @end deftypefn 32 33 */ 34 35 #include <ansidecl.h> 36 #include <stddef.h> 37 38 extern size_t strlen (const char *); 39 extern char *strncpy (char *, const char *, size_t); 40 41 char * 42 stpncpy (char *dst, const char *src, size_t len) 43 { 44 size_t n = strlen (src); 45 if (n > len) 46 n = len; 47 return strncpy (dst, src, len) + n; 48 } 49
