haimincodedlg.cpp

这是一个使用visual C++ 6.0的mfc编写的海明码编码的程序

// HaiminCodeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "HaiminCode.h"
#include "HaiminCodeDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHaiminCodeDlg dialog

CHaiminCodeDlg::CHaiminCodeDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CHaiminCodeDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CHaiminCodeDlg)
	m_CodeForCheck = _T("");
	m_HaiminCode = _T("");
	m_OriString = _T("");
	m_CodeChecked = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CHaiminCodeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CHaiminCodeDlg)
	DDX_Text(pDX, ID_CodeForCheck, m_CodeForCheck);
	DDX_Text(pDX, ID_HaiminCode, m_HaiminCode);
	DDX_Text(pDX, ID_OriString, m_OriString);
	DDX_Text(pDX, ID_CodeChecked, m_CodeChecked);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CHaiminCodeDlg, CDialog)
	//{{AFX_MSG_MAP(CHaiminCodeDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_Reset1, OnResetCode)
	ON_BN_CLICKED(IDC_Reset2, OnResetCheck)
	ON_BN_CLICKED(IDC_Check, OnCheck)
	ON_BN_CLICKED(IDC_HaiminCode, OnHaiminCode)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHaiminCodeDlg message handlers

BOOL CHaiminCodeDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CHaiminCodeDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CHaiminCodeDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CHaiminCodeDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}



void CHaiminCodeDlg::OnResetCode() 
{
	// TODO: Add your control notification handler code here
	m_OriString = "";
	m_HaiminCode ="";
	UpdateData(false);	
}

void CHaiminCodeDlg::OnResetCheck() 
{
	// TODO: Add your control notification handler code here
	m_CodeForCheck = "";
	m_CodeChecked = "";
	UpdateData(false);
	
}

void CHaiminCodeDlg::OnCheck() 
{
	// TODO: Add your control notification handler code here
	UpdateData(true);
	if( m_CodeForCheck.IsEmpty() )
	{
		AfxMessageBox("请输入待检测码字");
		return;
	}
//	检查二进制串时候合法
	int n = m_CodeForCheck.GetLength();
	for(int i =0;i< n;i++)
	{
		char a = m_CodeForCheck.GetAt(i);
		if( a != '0' && a != '1')
		{
			AfxMessageBox("带检错码字中有非法（非0或1）字母,请重新输入");
			return;
		}
	}
	int m =0;
	int r=GetR(m);
	while( (m+r) != n )
	{
		m++;
		r=GetR(m);
	}
	char* code = new char[n];
	int j;
	int* error = new int[n];
	int index =-1;
	
	for( i=0,j=1; i<r; i++,j=j*2)
	{
		//
		int num=0;
		for(int k=j+1;k<=n;k++)
		{
			char* s = changeToBinary(k);
			if( s[i] == '1' && m_CodeForCheck.GetAt(k-1) == '1')
				num++;
		}
		if(num%2 == 0 && m_CodeForCheck.GetAt(j-1) =='1')
			error[++index] = j;
		else
			if( num%2 == 1 && m_CodeForCheck.GetAt(j-1) =='0')
				error[++index] = j;		
	}
	int e=0;
	for(i=0;i<=index;i++)
		e += error[i];
	CString msg ;
	msg.Format("码字中的第%d位出错",e);
	AfxMessageBox(msg);
	m_CodeChecked = m_CodeForCheck;
	if(m_CodeForCheck.GetAt(e-1) == '0')
		m_CodeChecked.SetAt(e-1,'1');
	else
		m_CodeChecked.SetAt(e-1,'0');
	
	UpdateData(false);
	return;
	
}

void CHaiminCodeDlg::OnHaiminCode() 
{
	// TODO: Add your control notification handler code here
	UpdateData(true);
	if( m_OriString.IsEmpty() )
	{
		AfxMessageBox("请输入二进制串");
		return;
	}
//	检查二进制串时候合法
	int m=m_OriString.GetLength();
	for(int i =0;i< m;i++)
	{
		char a = m_OriString.GetAt(i);
		if( a != '0' && a != '1')
		{
			AfxMessageBox("二进制串中有非法（非0或1）字母,请重新输入");
			return;
		}
	}
	int r = GetR(m);
	int n= m+r;
	char* code = new char[n];
	int j =0;	
	int temp = 1;
	//initialization
	for(i = 1; i<= n ;i++)
	{		
		if( i == temp)
		{
			j++;
			temp = temp*2;
		}
		else
			code[i-1] = m_OriString.GetAt(i-j-1) ;
	}
	for( i=0,j=1; i<r; i++,j=j*2)
	{
		//
		int num=0;
		for(int k=j+1;k<=n;k++)
		{
			char* s = changeToBinary(k);
			if( s[i] == '1' && code[k-1] == '1')
				num++;
		}
		if(num%2 == 0 )
			code[j-1] = '0';
		else
			code[j-1] = '1';
		
	}
//	code[n] == '\0';
	m_HaiminCode.Format(code);
	UpdateData(false);
	return;
	
}
//根据报文长度m得到校验位的个数r
int CHaiminCodeDlg::GetR(int m)
{
	int r =1;
	int left = m + r +1 ;
	int right =  1;
	for(int i =0 ; i < r ;i++)
		right = right * 2;
	while( left> right )
	{
		r++;
		left = m + r +1 ;
		 right =  1;
		for(int i =0 ; i < r ;i++)
			right = right * 2;
	}
	return r;
}

char* CHaiminCodeDlg::changeToBinary(int i)
{
	char s[MAX];
	int j=0;
	while(i>1)
	{
		if( i%2 == 0)
			s[j] = '0';
		else
			s[j] = '1';
		i = (i - s[j] + '0') / 2;
		j ++;
	}
	if(i==1)
		s[j] ='1';
	else
		s[j] = '0';
	s[j+1] = '\0';
	return s;
}