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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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* <<memchr>>---find character in memory
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* INDEX
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* memchr
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* ANSI_SYNOPSIS
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* #include <string.h>
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* void *memchr(const void *<[src]>, int <[c]>, size_t <[length]>);
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* TRAD_SYNOPSIS
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* #include <string.h>
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* void *memchr(<[src]>, <[c]>, <[length]>)
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* void *<[src]>;
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* void *<[c]>;
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* size_t <[length]>;
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* This function searches memory starting at <<*<[src]>>> for the
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* character <[c]>. The search only ends with the first
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* occurrence of <[c]>, or after <[length]> characters; in
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* particular, <<NULL>> does not terminate the search.
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* RETURNS
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* If the character <[c]> is found within <[length]> characters
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* of <<*<[src]>>>, a pointer to the character is returned. If
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* <[c]> is not found, then <<NULL>> is returned.
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* PORTABILITY
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* <<memchr>>> is ANSI C.
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* <<memchr>> requires no supporting OS subroutines.
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* QUICKREF
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* memchr ansi pure
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*
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*
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*/
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#include <_ansi.h>
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#include <string.h>
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/**
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Search buffer for a character.
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Searches the first num bytes of memory block pointed by src_void for character c.
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@return A pointer to the first occurrence of c in buffer.
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If character is not found the function returns NULL.
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@param src_void Pointer to buffer.
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@param c Key character to look for.
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@param length Number of characters to check from buffer.
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*/
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EXPORT_C void *
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memchr (const void* src_void, int c, size_t length)
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{
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const unsigned char *src = (const unsigned char *) src_void;
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while (length--)
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{
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if (*src == c)
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return (char *) src;
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src++;
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}
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return NULL;
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}
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