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/*
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* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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* FUNCTION
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* <<strstr>>---find string segment
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* INDEX
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* strstr
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* ANSI_SYNOPSIS
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* #include <string.h>
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* char *strstr(const char *<[s1]>, const char *<[s2]>);
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* TRAD_SYNOPSIS
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* #include <string.h>
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* char *strstr(<[s1]>, <[s2]>)
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* char *<[s1]>;
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* char *<[s2]>;
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* Locates the first occurence in the string pointed to by <[s1]> of
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* the sequence of characters in the string pointed to by <[s2]>
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* (excluding the terminating null character).
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* RETURNS
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* Returns a pointer to the located string segment, or a null
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* pointer if the string <[s2]> is not found. If <[s2]> points to
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* a string with zero length, the <[s1]> is returned.
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* PORTABILITY
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* <<strstr>> is ANSI C.
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* <<strstr>> requires no supporting OS subroutines.
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* QUICKREF
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* strstr ansi pure
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*
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*
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*/
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#include <string.h>
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/**
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Find substring.
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Scans string1 for the first occurrence of string2.
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The search does not include terminating null-characters.
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@return A pointer to the first occurrence of lookfor in searchee.
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If lookfor is not found in searchee the function returns NULL.
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@param searchee Null-terminated string to search.
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@param lookfor Null-terminated string containing the substring to search for.
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*/
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EXPORT_C char *
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strstr (const char *searchee, const char *lookfor)
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{
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if (*searchee == 0)
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{
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if (*lookfor)
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return (char *) NULL;
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return (char *) searchee;
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}
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while (*searchee)
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{
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size_t i;
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i = 0;
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for (;;)
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{
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if (lookfor[i] == 0)
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{
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return (char *) searchee;
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}
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if (lookfor[i] != searchee[i])
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{
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break;
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}
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i++;
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}
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searchee++;
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}
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return (char *) NULL;
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}
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