| | 1 | /* Find the length of STRING, but scan at most MAXLEN characters. |
| | 2 | Copyright (C) 1996, 1997, 1998, 2000-2002 Free Software Foundation, Inc. |
| | 3 | This file is part of the GNU C Library. |
| | 4 | |
| | 5 | This program is free software; you can redistribute it and/or modify |
| | 6 | it under the terms of the GNU General Public License as published by |
| | 7 | the Free Software Foundation; either version 2, or (at your option) |
| | 8 | any later version. |
| | 9 | |
| | 10 | This program is distributed in the hope that it will be useful, |
| | 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 13 | GNU General Public License for more details. |
| | 14 | |
| | 15 | You should have received a copy of the GNU General Public License |
| | 16 | along with this program; if not, write to the Free Software Foundation, |
| | 17 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| | 18 | |
| | 19 | #if HAVE_CONFIG_H |
| | 20 | # include <config.h> |
| | 21 | #endif |
| | 22 | |
| | 23 | #if HAVE_STRING_H |
| | 24 | # if !STDC_HEADERS && HAVE_MEMORY_H |
| | 25 | # include <memory.h> |
| | 26 | # endif |
| | 27 | /* Temporarily redefine strnlen so that an inconsistent prototype |
| | 28 | (on at least AIX4.3.2.0 w/gcc-2.95.3) doesn't cause trouble. */ |
| | 29 | # define strnlen system_strnlen |
| | 30 | # include <string.h> |
| | 31 | # undef strnlen |
| | 32 | #else |
| | 33 | # include <strings.h> |
| | 34 | #endif |
| | 35 | |
| | 36 | #ifndef HAVE_DECL_MEMCHR |
| | 37 | "this configure-time declaration test was not run" |
| | 38 | #endif |
| | 39 | #if !HAVE_DECL_MEMCHR |
| | 40 | char *memchr (); |
| | 41 | #endif |
| | 42 | |
| | 43 | #undef __strnlen |
| | 44 | #undef strnlen |
| | 45 | |
| | 46 | #ifndef weak_alias |
| | 47 | # define __strnlen strnlen |
| | 48 | #endif |
| | 49 | |
| | 50 | /* Find the length of STRING, but scan at most MAXLEN characters. |
| | 51 | If no '\0' terminator is found in that many characters, return MAXLEN. */ |
| | 52 | |
| | 53 | size_t |
| | 54 | __strnlen (const char *string, size_t maxlen) |
| | 55 | { |
| | 56 | const char *end = memchr (string, '\0', maxlen); |
| | 57 | return end ? (size_t) (end - string) : maxlen; |
| | 58 | } |
| | 59 | #ifdef weak_alias |
| | 60 | weak_alias (__strnlen, strnlen) |
| | 61 | #endif |
projects / bison.git / blame_incremental