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/*
* Copyright (c) 2003 Rozhuk Ivan <rozhuk.im@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#if !defined(AFX_MEMORYFIND__H__INCLUDED_)
#define AFX_MEMORYFIND__H__INCLUDED_
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
__inline void *MemoryFind(size_t dwFrom,const void *pBuff,size_t dwBuffSize,const void *pWhatFind,size_t dwWhatFindSize)
{
void *pRet=NULL;
if (pBuff && dwBuffSize && pWhatFind && dwWhatFindSize && (dwFrom+dwWhatFindSize)<=dwBuffSize)
{
if (dwWhatFindSize==1)
{// MemoryFindByte
pRet=(void*)memchr((const void*)(((size_t)pBuff)+dwFrom),(*((unsigned char*)pWhatFind)),(dwBuffSize-dwFrom));
}else{
void *pCurPos;
pCurPos=(void*)(((size_t)pBuff)+dwFrom);
if ((dwFrom+dwWhatFindSize)==dwBuffSize)
{// only MemoryCompare
if (memcmp(pCurPos,pWhatFind,dwWhatFindSize)==0) pRet=pCurPos;
}else{
dwBuffSize-=(dwWhatFindSize-1);
while(pCurPos)
{
pCurPos=memchr(pCurPos,(*((unsigned char*)pWhatFind)),(dwBuffSize-(((size_t)pCurPos)-((size_t)pBuff))));
if (pCurPos)
{
if (memcmp(pCurPos,pWhatFind,dwWhatFindSize)==0)
{
pRet=pCurPos;
break;
}else{
pCurPos=(void*)(((size_t)pCurPos)+1);
}
}
}
}
}
}
return(pRet);
}
#endif // !defined(AFX_MEMORYFIND__H__INCLUDED_)
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