z_filedlg.cpp

文件压缩实例 zlib很好的压缩实例

// z_fileDlg.cpp : implementation file
//

#include "stdafx.h"
#include "z_file.h"
#include "z_fileDlg.h"
#include "czip.h"
#include "bufferpipe.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()

/////////////////////////////////////////////////////////////////////////////
// CZ_fileDlg dialog

CZ_fileDlg::CZ_fileDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CZ_fileDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CZ_fileDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CZ_fileDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CZ_fileDlg)
	DDX_Control(pDX, IDC_PROGRESS1, m_Progress);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CZ_fileDlg, CDialog)
	//{{AFX_MSG_MAP(CZ_fileDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
	ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CZ_fileDlg message handlers

BOOL CZ_fileDlg::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
	this->m_Progress.SetRange32(0,100);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CZ_fileDlg::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 CZ_fileDlg::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 CZ_fileDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CZ_fileDlg::OnButton1() 
{
	// TODO: Add your control notification handler code here
	zlib_compress_filter<Z_BEST_COMPRESSION> lzip;
	
	DWORD fsize,rsize;
	BYTE buf[8192];
	CFile ifile,ofile;
	int readcount = 0;
	
	if (ifile.Open("c:\\a.bmp",CFile::modeRead) && ofile.Open("c:\\b.cr", CFile::modeCreate|CFile::modeWrite)) {
		fsize = ifile.GetLength();
		rsize = 0;
		while (rsize < fsize) {
			memset(buf, 0 , 8192);
			int ret = ifile.Read(buf, 8192);
			int zcount;
			BYTE* pzip;
			zcount = 0;
			pzip = NULL;
			
			readcount++;
			
			TRACE("read count is %d\n", readcount);
			
			if (readcount == 54) {
				int j = 100;
			}
			
			if (ret == 8192) {
				pzip = lzip.Process(buf,ret,zcount);
			}else {
				pzip = lzip.ProcessLast(buf,ret,zcount);
			}
			
			if (pzip && zcount > 0) {
				ofile.Write(pzip,zcount);
				delete [] pzip;
			}
			rsize += ret;

			double pro = (double)rsize * 100 / fsize;
			m_Progress.SetPos((int)pro);

		}
		
		ifile.Close();
		ofile.Close();
	}
	m_Progress.SetPos(0);
	
}

void CZ_fileDlg::OnButton2() 
{
	// TODO: Add your control notification handler code here
	zlib_uncompress_filter<1> lunzip;
	DWORD fsize,rsize;
	BYTE buf[8192];
	CFile ifile,ofile;
	int readcount = 0;
	if (ifile.Open("c:\\b.cr", CFile::modeRead) && ofile.Open("c:\\c.bmp", CFile::modeCreate|CFile::modeWrite)) {
		fsize = ifile.GetLength();
		rsize = 0;
		while (rsize < fsize) {
			memset(buf, 0 , 8192);
			int ret = ifile.Read(buf, 8192);
			int zcount;
			BYTE* pzip;
			zcount = 0;
			pzip = NULL;
			
			readcount++;
			
			TRACE("read count is %d\n", readcount);
			
			//if (ret == 8192) {
			pzip = lunzip.Process(buf,ret,zcount);
			//}else {
			//	pzip = lzip.ProcessLast(buf,ret,zcount);
			//}
			
			if (pzip && zcount > 0) {
				ofile.Write(pzip,zcount);
				delete [] pzip;
			}
			rsize += ret;

			double pro = (double)rsize * 100 / fsize;
			m_Progress.SetPos((int)pro);

		}
		
		ifile.Close();
		ofile.Close();
		
	}
	m_Progress.SetPos(0);
	
}

void CZ_fileDlg::OnButton3() 
{
	// TODO: Add your control notification handler code here

	//zlib_compress_filter<Z_BEST_COMPRESSION> lzip;
	
	DWORD fsize,rsize;
	BYTE buf[8192];
	CFile ifile,ofile;
	
	if (ifile.Open("c:\\a.bmp",CFile::modeRead) && ofile.Open("c:\\d.cr", CFile::modeCreate|CFile::modeWrite)) {

		BufferPipe<zlib_compress_filter<Z_BEST_COMPRESSION>, buf_holder<BYTE, 8192>, CFile > lpipe(&ofile);

		fsize = ifile.GetLength();
		rsize = 0;
		while (rsize < fsize) {
			memset(buf, 0 , 8192);
			int ret = ifile.Read(buf, 8192);
			int zcount;
			BYTE* pzip;
			zcount = 0;
			pzip = NULL;

			lpipe.Write(buf, ret);
			
			rsize += ret;
			
			double pro = (double)rsize * 100 / fsize;
			m_Progress.SetPos((int)pro);
			
		}

		lpipe.Close();
		
		ifile.Close();
		ofile.Close();
	}
	m_Progress.SetPos(0);

	
}

void CZ_fileDlg::OnButton4() 
{
	// TODO: Add your control notification handler code here

	DWORD fsize,rsize;
	BYTE buf[8192];
	CFile ifile,ofile;
	
	if (ifile.Open("c:\\a.bmp",CFile::modeRead) && ofile.Open("c:\\e.bmp", CFile::modeCreate|CFile::modeWrite)) {

		BufferPipe<zlib_uncompress_filter<1>, buf_holder<BYTE, 8192>, CFile > dcpipe(&ofile);
		
		BufferPipe<zlib_compress_filter<Z_BEST_COMPRESSION>, buf_holder<BYTE, 8192>, 
			BufferPipe<zlib_uncompress_filter<1>, buf_holder<BYTE, 8192>, CFile > > cmpipe(&dcpipe);


		
		fsize = ifile.GetLength();
		rsize = 0;
		while (rsize < fsize) {
			memset(buf, 0 , 8192);
			int ret = ifile.Read(buf, 8192);
			int zcount;
			BYTE* pzip;
			zcount = 0;
			pzip = NULL;
			
			cmpipe.Write(buf, ret);
			
			rsize += ret;
			
			double pro = (double)rsize * 100 / fsize;
			m_Progress.SetPos((int)pro);
			
		}
		
		cmpipe.Close();
		dcpipe.Close();
		
		ifile.Close();
		ofile.Close();
	}
	m_Progress.SetPos(0);

	
}