The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/libsa/strstr.c

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*
    2  * Copyright (c) 2001 Apple Computer, Inc. All rights reserved.
    3  *
    4  * @APPLE_LICENSE_HEADER_START@
    5  * 
    6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
    7  * Reserved.  This file contains Original Code and/or Modifications of
    8  * Original Code as defined in and that are subject to the Apple Public
    9  * Source License Version 1.0 (the 'License').  You may not use this file
   10  * except in compliance with the License.  Please obtain a copy of the
   11  * License at http://www.apple.com/publicsource and read it before using
   12  * this file.
   13  * 
   14  * The Original Code and all software distributed under the License are
   15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
   19  * License for the specific language governing rights and limitations
   20  * under the License."
   21  * 
   22  * @APPLE_LICENSE_HEADER_END@
   23  */
   24 /*
   25  * Copyright (c) 1988, 1993
   26  *      The Regents of the University of California.  All rights reserved.
   27  *
   28  * Redistribution and use in source and binary forms, with or without
   29  * modification, are permitted provided that the following conditions
   30  * are met:
   31  * 1. Redistributions of source code must retain the above copyright
   32  *    notice, this list of conditions and the following disclaimer.
   33  * 2. Redistributions in binary form must reproduce the above copyright
   34  *    notice, this list of conditions and the following disclaimer in the
   35  *    documentation and/or other materials provided with the distribution.
   36  * 3. All advertising materials mentioning features or use of this software
   37  *    must display the following acknowledgement:
   38  *      This product includes software developed by the University of
   39  *      California, Berkeley and its contributors.
   40  * 4. Neither the name of the University nor the names of its contributors
   41  *    may be used to endorse or promote products derived from this software
   42  *    without specific prior written permission.
   43  *
   44  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   45  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   46  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   47  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   48  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   49  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   50  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   51  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   52  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   54  * SUCH DAMAGE.
   55  */
   56 /*
   57  * History:
   58  *  2002-01-24  gvdl    Initial implementation of strstr
   59  */
   60 
   61 #include <string.h>
   62 #include <libsa/stdlib.h>
   63 
   64 __private_extern__ char *
   65 strstr(const char *in, const char *str)
   66 {
   67     char c;
   68     size_t len;
   69 
   70     c = *str++;
   71     if (!c)
   72         return (char *) in;     // Trivial empty string case
   73 
   74     len = strlen(str);
   75     do {
   76         char sc;
   77 
   78         do {
   79             sc = *in++;
   80             if (!sc)
   81                 return (char *) 0;
   82         } while (sc != c);
   83     } while (strncmp(in, str, len) != 0);
   84 
   85     return (char *) (in - 1);
   86 }

Cache object: 8209be74f30dfa7aded808319e84a18d


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.