projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9385eb3d A |
1 | /*- |
| 2 | * Copyright (c) 1990, 1993 | |
| e9ce8d39 A |
3 | * The Regents of the University of California. All rights reserved. |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | */ | |
| 33 | ||
| 5b2abdfb | 34 | #if defined(LIBC_SCCS) && !defined(lint) |
| 9385eb3d | 35 | static char sccsid[] = "@(#)index.c 8.1 (Berkeley) 6/4/93"; |
| 5b2abdfb | 36 | #endif /* LIBC_SCCS and not lint */ |
| 9385eb3d | 37 | #include <sys/cdefs.h> |
| 3d9156a7 | 38 | __FBSDID("$FreeBSD: src/lib/libc/string/index.c,v 1.7 2003/12/18 07:44:53 jkh Exp $"); |
| e9ce8d39 | 39 | |
| 9385eb3d | 40 | #include <stddef.h> |
| e9ce8d39 | 41 | |
| 9385eb3d A |
42 | #ifdef STRCHR |
| 43 | #include <string.h> | |
| 44 | ||
| 45 | char * | |
| 46 | strchr | |
| 47 | #else | |
| 48 | #include <strings.h> | |
| 5b2abdfb | 49 | |
| 9385eb3d A |
50 | char * |
| 51 | index | |
| 52 | #endif | |
| 53 | (const char *p, int ch) | |
| 54 | { | |
| 3d9156a7 A |
55 | char c; |
| 56 | ||
| 57 | c = ch; | |
| 9385eb3d | 58 | for (;; ++p) { |
| 3d9156a7 | 59 | if (*p == c) |
| 9385eb3d A |
60 | return ((char *)p); |
| 61 | if (*p == '\0') | |
| 62 | return (NULL); | |
| 63 | } | |
| 64 | /* NOTREACHED */ | |
| e9ce8d39 | 65 | } |