From 48540940b6c28bb4378abfeb500ec45a625b37b6 Mon Sep 17 00:00:00 2001
From: Vadim Dashevskiy <watcherhd@gmail.com>
Date: Tue, 15 May 2012 10:38:20 +0000
Subject: initial commit

git-svn-id: http://svn.miranda-ng.org/main/trunk@2 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
---
 protocols/MRA/Sdk/MemoryFindByte.h | 97 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 protocols/MRA/Sdk/MemoryFindByte.h

(limited to 'protocols/MRA/Sdk/MemoryFindByte.h')

diff --git a/protocols/MRA/Sdk/MemoryFindByte.h b/protocols/MRA/Sdk/MemoryFindByte.h
new file mode 100644
index 0000000000..a18a721b9d
--- /dev/null
+++ b/protocols/MRA/Sdk/MemoryFindByte.h
@@ -0,0 +1,97 @@
+/*
+ * 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_MEMORYFINDBYTE__H__INCLUDED_)
+#define AFX_MEMORYFINDBYTE__H__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+
+
+__inline void *MemoryFindByte(size_t dwFrom,const void *pBuff,size_t dwBuffSize,unsigned char chWhatFind)
+{
+	void *pRet=NULL;
+
+	if (pBuff && dwBuffSize && dwFrom<dwBuffSize)
+	{
+		pRet=(void*)memchr((const void*)(((size_t)pBuff)+dwFrom),chWhatFind,(dwBuffSize-dwFrom));
+	}
+return(pRet);
+}
+
+
+#ifndef  _WIN64
+__inline void *MemoryFindByteReverse(size_t dwFrom,const void *pBuff,size_t dwBuffSize,unsigned char chWhatFind)
+{
+	void *pRet=NULL;
+
+	__asm
+	{
+		push	ebx				// сохраняем регистр
+		push	edi				// сохраняем регистр
+		push	esi				// сохраняем регистр
+
+		mov		ecx,dwBuffSize
+		test	ecx,ecx			//; проверка входного параметра, он !=0
+		je		short end_func
+
+		mov		edi,pBuff		//; di = string
+		test	edi,edi			//; проверка входного параметра, он !=0
+		jz		short end_func
+
+		mov		eax,dwFrom
+
+/////////////////////////////////////////////
+		cmp		eax,ecx			//; проверка ecx(=len)=>dwFrom
+		jae		short end_func
+
+		std						//; count 'up' on string this time
+		sub		ecx,eax			//; уменьшаем длинну на dwFrom(нач смещен)
+		add		edi,ecx			//; сдвигаем начало на dwSourceSize(на конец)
+		mov		al,chWhatFind	//; al=search byte
+ 		repne	scasb			//; find that byte
+		inc		edi				//; di points to byte which stopped scan
+		cmp		[edi],al		//; see if we have a hit
+		jne		short end_func	//; yes, point to byte
+		mov		pRet,edi		//; ax=pointer to byte
+	end_func:
+
+		cld
+		pop		esi				// восстанавливаем содержимое регистра
+		pop		edi				// восстанавливаем содержимое регистра
+		pop		ebx				// восстанавливаем содержимое регистра
+	}
+return(pRet);
+}
+#endif
+
+
+#endif // !defined(AFX_MEMORYFINDBYTE__H__INCLUDED_)
-- 
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