guanjiancifenxidlg.cpp

关键词抽取技术广泛应用于信息检索、文本分类/聚类、信息过滤

// GuanJianCiFenXiDlg.cpp : implementation file
//

#include "stdafx.h"
#include "HLSwknlTool.h"
#include "GuanJianCiFenXiDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CGuanJianCiFenXiDlg dialog


CGuanJianCiFenXiDlg::CGuanJianCiFenXiDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CGuanJianCiFenXiDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CGuanJianCiFenXiDlg)
	m_strKeySource = _T("");
	m_strSliderValue = _T("");
	//}}AFX_DATA_INIT
}

BOOL CGuanJianCiFenXiDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	GetDlgItem(IDC_STATIC_1)->SetWindowText("权重百分比调整");
	GetDlgItem(IDC_BUTTON_KEYLOAD)->SetWindowText("载入(&L)");
	GetDlgItem(IDC_BUTTON_KEYANALYSE)->SetWindowText("分析(&S)");
	GetDlgItem(IDC_BUTTON_KEYERASE)->SetWindowText("清空(&E)");
	m_cSliderCtrl.SetRange(0,100);	
	m_cSliderCtrl.SetPos(40);
	int nKeyCount = 0;
	int nKeySelCount = nKeyCount * m_cSliderCtrl.GetPos() / (m_cSliderCtrl.GetRangeMax() - m_cSliderCtrl.GetRangeMin());
	m_strSliderValue.Format("共%d个关键词，该百分比含有前%d个关键词！",nKeyCount,nKeySelCount);
	
	m_cKeyResult.InsertColumn(0,"ID");
	m_cKeyResult.InsertColumn(1,"关键词");
	m_cKeyResult.InsertColumn(2,"权重");
	
	m_cKeyResult.SetColumnWidth(0,40);
	m_cKeyResult.SetColumnWidth(1,60);
	m_cKeyResult.SetColumnWidth(2,80);
	
	GetDlgItem(IDC_EDIT_KEYSOURCE)->SetFocus();
	UpdateData(FALSE);
	return TRUE;  // return TRUE unless you set the focus to a control
	// EXCEPTION: OCX Property Pages should return FALSE
}

void CGuanJianCiFenXiDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CGuanJianCiFenXiDlg)
	DDX_Control(pDX, IDC_SLIDER_WEIGHT, m_cSliderCtrl);
	DDX_Control(pDX, IDC_LIST_KEYRESULT, m_cKeyResult);
	DDX_Text(pDX, IDC_EDIT_KEYSOURCE, m_strKeySource);
	DDX_Text(pDX, IDC_STATIC_BOTTOM, m_strSliderValue);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CGuanJianCiFenXiDlg, CDialog)
	//{{AFX_MSG_MAP(CGuanJianCiFenXiDlg)
	ON_BN_CLICKED(IDC_BUTTON_KEYLOAD, OnButtonKeyload)
	ON_BN_CLICKED(IDC_BUTTON_KEYANALYSE, OnButtonKeyanalyse)
	ON_BN_CLICKED(IDC_BUTTON_KEYERASE, OnButtonKeyerase)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CGuanJianCiFenXiDlg message handlers

void CGuanJianCiFenXiDlg::OnButtonKeyload() 
{
	// TODO: Add your control notification handler code here
	UpdateData();
	//选择文件
	CFileDialog cdlg(TRUE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,"文本文件(*.txt)|*.txt|All File(*.*)|*.*||",this);
	if(cdlg.DoModal()==IDOK)
	{
		CFile file ;
		CString strFile = cdlg.GetFileName();
		if(!file.Open(strFile,CFile::modeRead))//打开选择的文件
		{
			AfxMessageBox("文件打开失败!");
			return ;
		}
		int nLen = file.GetLength();//获得文件长度
		LPSTR lpTemp = m_strKeySource.GetBuffer(nLen+1);
		file.Read(lpTemp,nLen);//读取文件内容
		lpTemp[nLen] = _T('\0');
		m_strKeySource.ReleaseBuffer() ;
		file.Close();
		
		m_cKeyResult.DeleteAllItems();

		UpdateData(FALSE);//显示在界面中
	}
}

void CGuanJianCiFenXiDlg::OnButtonKeyanalyse() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	
	m_cKeyResult.DeleteAllItems();
	
	///打开分词句柄
	HANDLE hHandle = HLOpenSplit();
	if(hHandle == INVALID_HANDLE_VALUE)
	{
		AfxMessageBox("分词句柄打开失败!");
		return ;
	}
	int nExtra = 0;
	nExtra |= HL_CAL_OPT_KEYWORD;
	DWORD dwStart = GetTickCount();
	HLSplitWord(hHandle,(LPCTSTR)m_strKeySource,nExtra);//进行分词
	DWORD dwEnd = GetTickCount();
	CString strMsg ;
	strMsg.Format("字节：%d  耗时：%dms",m_strKeySource.GetLength(),(dwEnd-dwStart));
	AfxMessageBox(strMsg);
	int nKeyCount = HLGetFileKeyCnt(hHandle) ;//获得关键词个数
	int nKeySelCount = nKeyCount * m_cSliderCtrl.GetPos() / (m_cSliderCtrl.GetRangeMax() - m_cSliderCtrl.GetRangeMin());
	m_strSliderValue.Format("%s%d%s%d%s","共",nKeyCount,"个关键词，该百分比含有前",nKeySelCount,"个关键词！");
	for(int j = 0 ; j < nKeySelCount ; j++)
	{
		SHLSegWord* pKey = HLGetFileKeyAt(hHandle,j);//获得指定的关键词
		if(!pKey)
			continue ;
		CString strTmp;
		strTmp.Format("%d",j+1);
		m_cKeyResult.InsertItem(j,strTmp);//插入行
		m_cKeyResult.SetItemText(j,1,pKey->s_szWord);//设置该行的不同列的显示字符
		strTmp.Format("%f",pKey->s_fWeight);
		m_cKeyResult.SetItemText(j,2,strTmp); 

	}//for j
	HLCloseSplit(hHandle);//关闭分词句柄
	
	UpdateData(FALSE);
}

void CGuanJianCiFenXiDlg::OnButtonKeyerase() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	
	m_strKeySource = _T("");
	GetDlgItem(IDC_EDIT_KEYSOURCE)->SetFocus();
	m_cKeyResult.DeleteAllItems();
	
	UpdateData(FALSE);
}


BOOL CGuanJianCiFenXiDlg::PreTranslateMessage(MSG* pMsg) 
{
	// TODO: Add your specialized code here and/or call the base class
	if ((pMsg->message == WM_KEYDOWN) && (pMsg->wParam == VK_ESCAPE))
		return true;	
	return CDialog::PreTranslateMessage(pMsg);
}