cykdlg.cpp

模式识别中的CYK算法

// CYKDlg.cpp : implementation file
//

#include "stdafx.h"
#include "CYK.h"
#include "CYKDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CCYKDlg dialog

CCYKDlg::CCYKDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCYKDlg::IDD, pParent)
{   
	//{{AFX_DATA_INIT(CCYKDlg)
	m_ruleback = _T("");
	m_rulefront = _T("");
	m_string = _T("");
	m_result = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CCYKDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCYKDlg)
	DDX_Control(pDX, IDC_LISTRESULT, m_listresult);
	DDX_Control(pDX, IDC_RULELIST, m_rulelist);
	DDX_Text(pDX, IDC_RULEBACK, m_ruleback);
	DDX_Text(pDX, IDC_RULEFRONT, m_rulefront);
	DDX_Text(pDX, IDC_String, m_string);
	DDX_Text(pDX, IDC_RESULT, m_result);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCYKDlg, CDialog)
	//{{AFX_MSG_MAP(CCYKDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ADD, OnAdd)
	ON_BN_CLICKED(IDC_DELETE, OnDelete)
	ON_BN_CLICKED(IDC_Begin, OnBegin)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCYKDlg message handlers

BOOL CCYKDlg::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 CCYKDlg::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 CCYKDlg::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 CCYKDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CCYKDlg::OnAdd() 
{CString str;
 int lengthfront,lengthback;
 UpdateData(TRUE); 
 str=m_rulefront+"->"+m_ruleback;
 lengthfront=strlen(m_rulefront);
 lengthback=strlen(m_ruleback);
 if(lengthfront!=1||m_rulefront<"A"||m_rulefront>"Z"
	 ||(lengthback!=1&&lengthback!=2)||(lengthback==1&&(m_ruleback<"a"||m_ruleback>"z"))
	 ||(lengthback==2&&(m_ruleback.Left(1)<"A"||m_ruleback.Left(1)>"Z"))
	 ||(lengthback==2&&(m_ruleback.Right(1)<"A"||m_ruleback.Right(1)>"Z"))) 
	{AfxMessageBox("错误规则(只允许X->XX or X->x)，请重新输入"); return;}
 m_rulelist.AddString(str);
 UpdateData(FALSE);
}

void CCYKDlg::OnDelete() 
{int index=m_rulelist.GetCurSel();
 if(index<0) return;
 m_rulelist.DeleteString(index);
 UpdateData(FALSE);
}

void CCYKDlg::OnBegin() 
{int i,j,k,h;
 int StringLen,RuleNum;
 CString str;
 UpdateData(TRUE);
 StringLen=strlen(m_string);
 CString** T;
 MArray_2D(T,StringLen,StringLen,CString,"T[i][j]");
 for(i=0;i<StringLen;i++)
	 for(j=0;j<StringLen;j++)
		{T[i][j]=_T("");
		}
 RuleNum=m_rulelist.GetCount();
 Rule* RuleMat;
 RuleMat=new Rule[RuleNum];
 for(i=0;i<RuleNum;i++)
	{m_rulelist.GetText(i,str);
	 RuleMat[i].RuleFront=str.Left(1);
	 RuleMat[i].RuleBack=str.Mid(3,strlen(str));
	}
                //******************************
                //        CYK algorithm
                //******************************
 //*****************************************************************
 for(i=1;i<=StringLen;i++)
	{for(j=StringLen;j>=i;j--)
		{for(h=0;h<RuleNum;h++)
			{if(i==1){if((m_string.Right(j)).Left(1)==RuleMat[h].RuleBack) 
						T[StringLen-j][0]+=RuleMat[h].RuleFront;
				}
			 else{for(k=1;k<i;k++)
					{if(((T[StringLen-j][k-1].Find((RuleMat[h].RuleBack).Left(1)))!=-1)&&((T[StringLen-j+k][i-k-1].Find((RuleMat[h].RuleBack).Right(1)))!=-1))
						{if((T[StringLen-j][i-1].Find(RuleMat[h].RuleFront))==-1)
						 T[StringLen-j][i-1]+=RuleMat[h].RuleFront;
						}
					}
				}
			}
		}
	}
 if(T[0][StringLen-1].Find("S")==-1) m_result=_T("此字串不能由S生成");
 else m_result=_T("此字串可以由S生成");
 //******************************************************************
                      
				//************************************
                //     display the resultlist
                //************************************
 //******************************************************************
 ListView_SetExtendedListViewStyle(this->m_listresult,LVS_EX_GRIDLINES | LVS_EX_FULLROWSELECT | LVS_EX_ONECLICKACTIVATE | LVS_EX_UNDERLINEHOT);
 int ColNum= m_listresult.GetItemCount();
 for(i=0;i<ColNum+1;i++)
	{m_listresult.DeleteColumn(0);
	}
 m_listresult.DeleteAllItems();
 m_listresult.InsertColumn(0,"j\\i",LVCFMT_LEFT,30,-1);
 for(i=0;i<StringLen;i++)
	{str.Format("%d",i+1);
	 m_listresult.InsertColumn(i+1,str,LVCFMT_LEFT,40,-1);
	}
 for(i=0;i<StringLen;i++)
	{str.Format("%d",i+1);
     m_listresult.InsertItem(i+1,str,0);		
	}
 for(i=0;i<StringLen;i++)
	for(j=0;j<StringLen-i;j++)
		{m_listresult.SetItemText(i,j+1,T[j][i]);
		}
 delete[] RuleMat; 
 MFree_2D(T);
 UpdateData(FALSE);
}