| 1 | /* Implement the stpncpy function. |
| 2 | Copyright (C) 2003 Free Software Foundation, Inc. |
| 3 | Written by Kaveh R. Ghazi <ghazi@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., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | /* |
| 22 | |
| 23 | @deftypefn Supplemental char* stpncpy (char *@var{dst}, const char *@var{src}, size_t @var{len}) |
| 24 | |
| 25 | Copies the string @var{src} into @var{dst}, copying exactly @var{len} |
| 26 | and padding with zeros if necessary. If @var{len} < strlen(@var{src}) |
| 27 | then return @var{dst} + @var{len}, otherwise returns @var{dst} + |
| 28 | strlen(@var{src}). |
| 29 | |
| 30 | @end deftypefn |
| 31 | |
| 32 | */ |
| 33 | |
| 34 | #include <ansidecl.h> |
| 35 | #ifdef ANSI_PROTOTYPES |
| 36 | #include <stddef.h> |
| 37 | #else |
| 38 | #define size_t unsigned long |
| 39 | #endif |
| 40 | |
| 41 | extern size_t strlen PARAMS ((const char *)); |
| 42 | extern char *strncpy PARAMS ((char *, const char *, size_t)); |
| 43 | |
| 44 | char * |
| 45 | stpncpy (dst, src, len) |
| 46 | char *dst; |
| 47 | const char *src; |
| 48 | size_t len; |
| 49 | { |
| 50 | size_t n = strlen (src); |
| 51 | if (n > len) |
| 52 | n = len; |
| 53 | return strncpy (dst, src, len) + n; |
| 54 | } |