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62 lines
2 KiB
C
62 lines
2 KiB
C
/* Copyright (c) 2000 TXT DataKonsult Ab & Monty Program Ab
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Copyright (c) 2009-2011, Monty Program Ab
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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/* File : strstr.c
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Author : Monty
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Updated: 1986.11.24
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Defines: strstr()
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strstr(src, pat) looks for an instance of pat in src. pat is not a
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regex(3) pattern, it is a literal string which must be matched exactly.
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The result is a pointer to the first character of the located instance,
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or NullS if pat does not occur in src.
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*/
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#include "strings_def.h"
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#ifndef HAVE_STRSTR
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char *strstr(register const char *str,const char *search)
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{
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register char *i,*j;
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register char first= *search;
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skip:
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while (*str != '\0') {
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if (*str++ == first) {
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i=(char*) str; j=(char*) search+1;
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while (*j)
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if (*i++ != *j++) goto skip;
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return ((char*) str-1);
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}
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}
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return ((char*) 0);
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} /* strstr */
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#endif
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