projects / apple / libplatform.git / blame
| Commit | Line | Data |
|---|---|---|
| 438624e0 A |
1 | /*- |
| 2 | * Copyright (c) 1990, 1993 | |
| 3 | * The Regents of the University of California. All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * Chris Torek. | |
| 7 | * | |
| 8 | * Redistribution and use in source and binary forms, with or without | |
| 9 | * modification, are permitted provided that the following conditions | |
| 10 | * are met: | |
| 11 | * 1. Redistributions of source code must retain the above copyright | |
| 12 | * notice, this list of conditions and the following disclaimer. | |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer in the | |
| 15 | * documentation and/or other materials provided with the distribution. | |
| 16 | * 4. Neither the name of the University nor the names of its contributors | |
| 17 | * may be used to endorse or promote products derived from this software | |
| 18 | * without specific prior written permission. | |
| 19 | * | |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 30 | * SUCH DAMAGE. | |
| 31 | */ | |
| 32 | ||
| 33 | #if defined(LIBC_SCCS) && !defined(lint) | |
| 34 | static char sccsid[] = "@(#)strstr.c 8.1 (Berkeley) 6/4/93"; | |
| 35 | #endif /* LIBC_SCCS and not lint */ | |
| 36 | #include <sys/cdefs.h> | |
| 37 | __FBSDID("$FreeBSD: src/lib/libc/string/strstr.c,v 1.6 2009/02/03 17:58:20 danger Exp $"); | |
| 38 | ||
| 39 | #include <sys/_types/_null.h> | |
| 40 | #include <platform/string.h> | |
| 41 | ||
| 42 | #if !_PLATFORM_OPTIMIZED_STRSTR | |
| 43 | ||
| 44 | /* | |
| 45 | * Find the first occurrence of find in s. | |
| 46 | */ | |
| 47 | char * | |
| 48 | _platform_strstr(const char *s, const char *find) | |
| 49 | { | |
| 50 | char c, sc; | |
| 51 | size_t len; | |
| 52 | ||
| 53 | if ((c = *find++) != '\0') { | |
| 54 | len = _platform_strlen(find); | |
| 55 | do { | |
| 56 | do { | |
| 57 | if ((sc = *s++) == '\0') | |
| 58 | return (NULL); | |
| 59 | } while (sc != c); | |
| 60 | } while (_platform_strncmp(s, find, len) != 0); | |
| 61 | s--; | |
| 62 | } | |
| 63 | return ((char *)s); | |
| 64 | } | |
| 65 | ||
| 66 | #if VARIANT_STATIC | |
| 67 | char * | |
| 68 | strstr(const char *s, const char *find) | |
| 69 | { | |
| 70 | return _platform_strstr(s, find); | |
| 71 | } | |
| 72 | #endif | |
| 73 | ||
| 74 | #endif |