VC++ 文件分割与合并

// FilePartitionDlg.cpp : implementation file // #include "stdafx.h" #include "FilePartition.h" #include "FilePartitionDlg.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CFilePartitionDlg dialog CFilePartitionDlg::CFilePartitionDlg(CWnd* pParent /*=NULL*/) : CDialog(CFilePartitionDlg::IDD, pParent) { //{{AFX_DATA_INIT(CFilePartitionDlg) //}}AFX_DATA_INIT m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CFilePartitionDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CFilePartitionDlg) //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CFilePartitionDlg, CDialog) //{{AFX_MSG_MAP(CFilePartitionDlg) ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC_BTADD, OnAdd) ON_BN_CLICKED(IDC_BTDIR, OnAddDir) ON_BN_CLICKED(IDC_BTPatition, OnPartition) ON_BN_CLICKED(IDC_BTSELPART, OnSelectPart) ON_BN_CLICKED(IDC_BTOMBIN, OnOmbin) ON_EN_CHANGE(IDC_EDFILEPATH, OnChangeEdfilepath) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CFilePartitionDlg message handlers BOOL CFilePartitionDlg::OnInitDialog() { CDialog::OnInitDialog(); SetIcon(m_hIcon, TRUE); // Set big icon SetIcon(m_hIcon, FALSE); // Set small icon return TRUE; // return TRUE unless you set the focus to a control } // 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 CFilePartitionDlg::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(); } } HCURSOR CFilePartitionDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CFilePartitionDlg::OnAdd() { CFileDialog log(TRUE,NULL,NULL,OFN_HIDEREADONLY,"FILE(*.*)|*.*||",NULL); if(log.DoModal()==IDOK) { CString pathname; pathname=log.GetPathName(); filename=log.GetFileName(); filenamenoext=log.GetFileTitle(); filenameext=log.GetFileExt(); GetDlgItem(IDC_EDFILEPATH)->SetWindowText(pathname); CFileStatus status; CFile::GetStatus(pathname,status); CString strsize; strsize.Format("文件大小为：%dBytes",status.m_size); GetDlgItem(IDC_FILESIZE)->SetWindowText(strsize); } } void CFilePartitionDlg::OnAddDir() { BROWSEINFO bi; char buffer[MAX_PATH]; ZeroMemory(buffer,MAX_PATH); bi.hwndOwner=GetSafeHwnd(); bi.pidlRoot=NULL; bi.pszDisplayName=buffer; bi.lpszTitle="选择一个文件夹"; bi.ulFlags=BIF_EDITBOX; bi.lpfn=NULL; bi.lParam=0; bi.iImage=0; LPITEMIDLIST pList=NULL; if((pList=SHBrowseForFolder(&bi))!=NULL) { char path[MAX_PATH]; ZeroMemory(path,MAX_PATH); SHGetPathFromIDList(pList,path); GetDlgItem(IDC_EDSAVEPATH)->SetWindowText(path); } } void CFilePartitionDlg::OnPartition() { CFile *readfile,*writefile; DWORD filelen,readlen,poslen; CString name,path,desname; //获得将要分割的文件的全路径 GetDlgItem(IDC_EDFILEPATH)->GetWindowText(name); //获得分割后文件的存放路径 GetDlgItem(IDC_EDSAVEPATH)->GetWindowText(path); CString strsize; //获得文件分割块的大小 GetDlgItem(IDC_EDSIZE)->GetWindowText(strsize); if(strsize.IsEmpty())return; DWORD partsize=atoi(strsize)*1024; BYTE *b=new BYTE[partsize]; readfile=new CFile(name,CFile::modeRead); filelen=readfile->GetLength(); int i=1; //在循环中根据文件的大小和用户设定的大小创建若干文件，并向文件中写入数据 while(1) { ZeroMemory(b,partsize); desname.Format("%s\\%spart%d_%s.dat",path,filenamenoext,i,filenameext); //创建文件块 HANDLE hfile=::CreateFile(desname,GENERIC_WRITE|GENERIC_WRITE, 0,0,CREATE_NEW,FILE_ATTRIBUTE_NORMAL,0); CloseHandle(hfile); writefile=new CFile(desname,CFile::modeWrite); readlen=readfile->Read(b,partsize); poslen=readfile->GetPosition(); writefile->Write(b,readlen); writefile->Close(); i++; if(poslen==filelen)break; } readfile->Close(); delete writefile; delete readfile; //设置INI文件的路径 //char buf[128]; //::GetCurrentDirectory(128,buf); CString inifile,pageend,size; inifile.Format("%s\\%s.ini",path,filenamenoext); size.Format("%d",filelen); pageend.Format("%d",i); //将原来文件的信息及分割后的文件数写入到INI文件中 ::WritePrivateProfileString("FilePartition","name",filenamenoext,inifile); ::WritePrivateProfileString("FilePartition","ext",filenameext,inifile); ::WritePrivateProfileString("FilePartition","pageend",pageend,inifile); ::WritePrivateProfileString("FilePartition","size",size,inifile); AfxMessageBox("分割成功"); } void CFilePartitionDlg::OnSelectPart() { CFileDialog log(TRUE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT| OFN_ALLOWMULTISELECT,"INI文件(*.ini)|*.ini||",NULL); if(log.DoModal()==IDOK) { CString ininame=log.GetPathName(); GetDlgItem(IDC_EDINI)->SetWindowText(ininame); } } void CFilePartitionDlg::OnOmbin() { CFile *readfile,*writefile; CString ininame,inidir; //获得分割文件时生成的INI文件 GetDlgItem(IDC_EDINI)->GetWindowText(ininame); //获得INI文件所在目录 inidir=FindPath(ininame); //获得分割前文件信息包括最后块序号，文件名（无扩展名），扩展名，块大小 char pagenum[128],pagename[128],pageext[128],size[128]; ::GetPrivateProfileString("FilePartition","name","",pagename,128,ininame); ::GetPrivateProfileString("FilePartition","ext","",pageext,128,ininame); ::GetPrivateProfileString("FilePartition","pageend","",pagenum,128,ininame); ::GetPrivateProfileString("FilePartition","size","",size,128,ininame); int pagecount=atoi(pagenum); CString desname; //合并后文件保存路径 CString srcname; //合并的文件的路径 desname.Format("%s\\%s.%s",inidir,pagename,pageext); HANDLE hfile=::CreateFile(desname,GENERIC_WRITE|GENERIC_WRITE, 0,0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0); CloseHandle(hfile); writefile=new CFile(desname,CFile::modeWrite); for(int i=1;i<pagecount;i++) { srcname.Format("%s\\%spart%d_%s.dat",inidir,pagename,i,pageext); readfile=new CFile(srcname,CFile::modeRead); DWORD filelen=readfile->GetLength(); BYTE *b=new BYTE[filelen]; readfile->Read(b,filelen); writefile->Write(b,filelen); readfile->Close(); delete b; } writefile->Close(); delete writefile; delete readfile; AfxMessageBox("合并完成"); } void CFilePartitionDlg::OnChangeEdfilepath() { CString desdirname,temp; GetDlgItem(IDC_EDFILEPATH)->GetWindowText(desdirname); int pos=desdirname.Find(filename); desdirname=desdirname.Left(pos-1); GetDlgItem(IDC_EDSAVEPATH)->SetWindowText(desdirname); } CString CFilePartitionDlg::FindPath(CString path) { CString strpathname; //文件所在的路径 CString strtemp; //保存全路径 strtemp=path; int pos; int leftpos=0; pos=strtemp.Find("\\"); while(pos!=-1) { leftpos+=pos; leftpos++; strtemp=strtemp.Right(strtemp.GetLength()-pos-1); pos=strtemp.Find("\\"); } strpathname=path.Left(leftpos); return strpathname; }