strnlen.c
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上传日期:2007-04-14
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- /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA */
- /* File : strnlen.c
- Author : Michael Widenius
- Updated: 20 April 1984
- Defines: strnlen.
- strnlen(s, len) returns the length of s or len if s is longer than len.
- */
- #include <global.h>
- #include "m_string.h"
- #ifndef HAVE_STRNLEN
- uint strnlen(register const char *s, register uint maxlen)
- {
- const char *end= memchr(s, ' ', maxlen);
- return end ? (uint) (end - s) : maxlen;
- }
- #endif