xref: /xnu-8796.141.3/bsd/libkern/scanc.c (revision 1b191cb58250d0705d8a51287127505aa4bc0789)
1*1b191cb5SApple OSS Distributions /*
2*1b191cb5SApple OSS Distributions  * Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
3*1b191cb5SApple OSS Distributions  *
4*1b191cb5SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*1b191cb5SApple OSS Distributions  *
6*1b191cb5SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*1b191cb5SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*1b191cb5SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*1b191cb5SApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*1b191cb5SApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*1b191cb5SApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*1b191cb5SApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*1b191cb5SApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*1b191cb5SApple OSS Distributions  *
15*1b191cb5SApple OSS Distributions  * Please obtain a copy of the License at
16*1b191cb5SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*1b191cb5SApple OSS Distributions  *
18*1b191cb5SApple OSS Distributions  * The Original Code and all software distributed under the License are
19*1b191cb5SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*1b191cb5SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*1b191cb5SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*1b191cb5SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*1b191cb5SApple OSS Distributions  * Please see the License for the specific language governing rights and
24*1b191cb5SApple OSS Distributions  * limitations under the License.
25*1b191cb5SApple OSS Distributions  *
26*1b191cb5SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*1b191cb5SApple OSS Distributions  */
28*1b191cb5SApple OSS Distributions /*-
29*1b191cb5SApple OSS Distributions  * Copyright (c) 1992, 1993
30*1b191cb5SApple OSS Distributions  *	The Regents of the University of California.  All rights reserved.
31*1b191cb5SApple OSS Distributions  *
32*1b191cb5SApple OSS Distributions  * Redistribution and use in source and binary forms, with or without
33*1b191cb5SApple OSS Distributions  * modification, are permitted provided that the following conditions
34*1b191cb5SApple OSS Distributions  * are met:
35*1b191cb5SApple OSS Distributions  * 1. Redistributions of source code must retain the above copyright
36*1b191cb5SApple OSS Distributions  *    notice, this list of conditions and the following disclaimer.
37*1b191cb5SApple OSS Distributions  * 2. Redistributions in binary form must reproduce the above copyright
38*1b191cb5SApple OSS Distributions  *    notice, this list of conditions and the following disclaimer in the
39*1b191cb5SApple OSS Distributions  *    documentation and/or other materials provided with the distribution.
40*1b191cb5SApple OSS Distributions  * 3. All advertising materials mentioning features or use of this software
41*1b191cb5SApple OSS Distributions  *    must display the following acknowledgement:
42*1b191cb5SApple OSS Distributions  *	This product includes software developed by the University of
43*1b191cb5SApple OSS Distributions  *	California, Berkeley and its contributors.
44*1b191cb5SApple OSS Distributions  * 4. Neither the name of the University nor the names of its contributors
45*1b191cb5SApple OSS Distributions  *    may be used to endorse or promote products derived from this software
46*1b191cb5SApple OSS Distributions  *    without specific prior written permission.
47*1b191cb5SApple OSS Distributions  *
48*1b191cb5SApple OSS Distributions  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49*1b191cb5SApple OSS Distributions  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50*1b191cb5SApple OSS Distributions  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51*1b191cb5SApple OSS Distributions  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52*1b191cb5SApple OSS Distributions  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53*1b191cb5SApple OSS Distributions  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54*1b191cb5SApple OSS Distributions  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55*1b191cb5SApple OSS Distributions  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56*1b191cb5SApple OSS Distributions  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57*1b191cb5SApple OSS Distributions  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58*1b191cb5SApple OSS Distributions  * SUCH DAMAGE.
59*1b191cb5SApple OSS Distributions  *
60*1b191cb5SApple OSS Distributions  *	@(#)scanc.c	8.1 (Berkeley) 6/10/93
61*1b191cb5SApple OSS Distributions  */
62*1b191cb5SApple OSS Distributions 
63*1b191cb5SApple OSS Distributions #include <libkern/libkern.h>
64*1b191cb5SApple OSS Distributions 
65*1b191cb5SApple OSS Distributions size_t
scanc(size_t size,u_char * cp,const u_char table[],u_char mask0)66*1b191cb5SApple OSS Distributions scanc(size_t size, u_char *cp, const u_char table[], u_char mask0)
67*1b191cb5SApple OSS Distributions {
68*1b191cb5SApple OSS Distributions 	u_char *end;
69*1b191cb5SApple OSS Distributions 	u_char mask;
70*1b191cb5SApple OSS Distributions 
71*1b191cb5SApple OSS Distributions 	mask = mask0;
72*1b191cb5SApple OSS Distributions 	for (end = &cp[size]; cp != end && (table[*cp] & mask) == 0; ++cp) {
73*1b191cb5SApple OSS Distributions 		;
74*1b191cb5SApple OSS Distributions 	}
75*1b191cb5SApple OSS Distributions 	return (size_t)(end - cp);
76*1b191cb5SApple OSS Distributions }
77