resendpackageindex.cpp

嵌入式DOS系统上位升级程序FileUpgrade, 需配合本人上传的FileUpr程序应用, VC++开发, 非常实用, 内附说明及源码

#include "stdafx.h"
#include "ReSendPackageIndex.h"
CReSendPackageIndex::CReSendPackageIndex()
{
	mHead=mTail=0;
}
CReSendPackageIndex::~CReSendPackageIndex()
{
}
void CReSendPackageIndex::AddData(unsigned short Tdata)
{
	unsigned char k=mHead;
	while(k!=mTail)
	{
		if(mData[k]==Tdata) return;
		k++;
	}
	mData[mTail++]=Tdata;
//	if(mTail==MaxBuf) mTail=0;
	if(mHead==mTail) 
	{ 	
		mHead++; 
//		if(mHead==MaxBuf) mHead=0;
	}
}
char CReSendPackageIndex::GetData(unsigned short &Tdata)
{
	if(mHead==mTail) return 0;	
	Tdata=mData[mHead++];
//	if(mHead==MaxBuf) mHead=0;
	return 1;
}
void CReSendPackageIndex::Empty()
{
	mHead=mTail=0;
}