1*143603faSchristos /* $NetBSD: strcasecmp.c,v 1.3 2018/08/11 16:25:32 christos Exp $ */
237c9f0a6Schristos
337c9f0a6Schristos /*
437c9f0a6Schristos * Copyright (c) 1987, 1993
537c9f0a6Schristos * The Regents of the University of California. All rights reserved.
637c9f0a6Schristos *
737c9f0a6Schristos * Redistribution and use in source and binary forms, with or without
837c9f0a6Schristos * modification, are permitted provided that the following conditions
937c9f0a6Schristos * are met:
1037c9f0a6Schristos * 1. Redistributions of source code must retain the above copyright
1137c9f0a6Schristos * notice, this list of conditions and the following disclaimer.
1237c9f0a6Schristos * 2. Redistributions in binary form must reproduce the above copyright
1337c9f0a6Schristos * notice, this list of conditions and the following disclaimer in the
1437c9f0a6Schristos * documentation and/or other materials provided with the distribution.
1537c9f0a6Schristos * 3. Neither the name of the University nor the names of its contributors
1637c9f0a6Schristos * may be used to endorse or promote products derived from this software
1737c9f0a6Schristos * without specific prior written permission.
1837c9f0a6Schristos *
1937c9f0a6Schristos * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
2037c9f0a6Schristos * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2137c9f0a6Schristos * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2237c9f0a6Schristos * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2337c9f0a6Schristos * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2437c9f0a6Schristos * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2537c9f0a6Schristos * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2637c9f0a6Schristos * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2737c9f0a6Schristos * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2837c9f0a6Schristos * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2937c9f0a6Schristos * SUCH DAMAGE.
3037c9f0a6Schristos */
3137c9f0a6Schristos
32*143603faSchristos #if HAVE_NBTOOL_CONFIG_H
33*143603faSchristos #include "nbtool_config.h"
34*143603faSchristos #endif
35*143603faSchristos
3637c9f0a6Schristos #include <sys/cdefs.h>
3737c9f0a6Schristos #if defined(LIBC_SCCS) && !defined(lint)
3837c9f0a6Schristos #if 0
3937c9f0a6Schristos static char sccsid[] = "@(#)strcasecmp.c 8.1 (Berkeley) 6/4/93";
4037c9f0a6Schristos #else
41*143603faSchristos __RCSID("$NetBSD: strcasecmp.c,v 1.3 2018/08/11 16:25:32 christos Exp $");
4237c9f0a6Schristos #endif
4337c9f0a6Schristos #endif /* LIBC_SCCS and not lint */
4437c9f0a6Schristos
4537c9f0a6Schristos #if !defined(_KERNEL) && !defined(_STANDALONE)
4637c9f0a6Schristos #include "namespace.h"
4737c9f0a6Schristos #include <assert.h>
4837c9f0a6Schristos #include <ctype.h>
4937c9f0a6Schristos #include <string.h>
5037c9f0a6Schristos #ifdef __weak_alias
__weak_alias(strcasecmp,_strcasecmp)5137c9f0a6Schristos __weak_alias(strcasecmp,_strcasecmp)
5237c9f0a6Schristos __weak_alias(strncasecmp,_strncasecmp)
5337c9f0a6Schristos #endif
5437c9f0a6Schristos #else
5537c9f0a6Schristos #include <lib/libkern/libkern.h>
5637c9f0a6Schristos #include <machine/limits.h>
5737c9f0a6Schristos #endif
5837c9f0a6Schristos
5937c9f0a6Schristos int
60a8565cf9Schristos strcasecmp(const char *s1, const char *s2)
6137c9f0a6Schristos {
6237c9f0a6Schristos const unsigned char *us1 = (const unsigned char *)s1,
6337c9f0a6Schristos *us2 = (const unsigned char *)s2;
6437c9f0a6Schristos
6537c9f0a6Schristos _DIAGASSERT(s1 != NULL);
6637c9f0a6Schristos _DIAGASSERT(s2 != NULL);
6737c9f0a6Schristos
6837c9f0a6Schristos while (tolower(*us1) == tolower(*us2++))
6937c9f0a6Schristos if (*us1++ == '\0')
7037c9f0a6Schristos return (0);
7137c9f0a6Schristos return (tolower(*us1) - tolower(*--us2));
7237c9f0a6Schristos }
73