txtcut.txt

将一个文本按照输入大小指定分割

long  CFileSpltDlg::GetSplitFileSize() 
//获取用户选择文件分割后的大小

{

	char buf[100];

	m_FileSize.GetWindowText(buf,100);

	for(int i=0; i<(int)strlen(buf); i++)

	{

		if(!::isdigit(buf[i]))

		{

		MessageBox("请输入数字!","文件分割",
                MB_ICONEXCLAMATION);

			return 0;

		}

	}

	

	return atoi(buf)*1000000;

}




 


int CFileSpltDlg::MergeMe() // 文件合并涵数
{
  CWaitCursor wait;
  CFile destFile;
  CFileException ex;

  BYTE buffer[140000];
  DWORD dwRead;
  UINT nCount = 140000;
  UINT newlen = 1400000;
  char buff[20];
  long l = 1;
  CString name;
  CString pref;
  CString newpath;

  UpdateData(TRUE);

  if (!m_path.IsEmpty())
  {
    if (!m_SourceFile.Open(m_path, CFile::modeRead | CFile::shareDenyNone |
      CFile::typeBinary, &ex))
    {
      TCHAR szError[1024];
      ex.GetErrorMessage(szError, 1024);
      ::AfxMessageBox(szError);
      m_edit.SetFocus();
      m_edit.SetSel(0,  - 1);
      return 1;
    }
    m_filename = m_path.Right((m_path.GetLength() - m_path.ReverseFind('\\')) -
      1);
    m_SourceFile.Close();
  }

  newpath = m_path.Left(m_path.GetLength() - m_filename.GetLength());

  if (!m_targetpath.IsEmpty())
  {
    if (!m_filename.IsEmpty() && m_filename.Left(2) != _T("1_"))
    {
      ::AfxMessageBox(_T("待合并的源文件名不对..."), MB_ICONERROR);
      return 1;
    }
    else if (m_filename.IsEmpty())
    {
      MessageBox(_T("请选择待合并的源文件."), _T("文件分割器"),
        MB_ICONEXCLAMATION);
      return 1;
    }
    m_filename = m_filename.Right(m_filename.GetLength() - 2);

    if (m_targetpath.Right(1) == '\\')
      m_path = m_targetpath + m_filename;
    else
      m_path = m_targetpath + _T("\\") + m_filename;

    if (!destFile.Open(m_path, CFile::modeWrite | CFile::shareExclusive | CFile
      ::typeBinary | CFile::modeCreate, &ex))
    {
      TCHAR szError[1024];
      ex.GetErrorMessage(szError, 1024);
      ::AfxMessageBox(szError);
      return 0;
    }
  }
  else if (m_path.IsEmpty())
  {
    MessageBox(_T("请选择待合并的源文件."), _T("文件分割器"),
      MB_ICONEXCLAMATION);
    return 1;
  }
  if (m_targetpath.IsEmpty())
  {
    //target is not there
    MessageBox(_T("请选择合并后要保存到的目标文件夹."), _T("文件分割器"),
      MB_ICONEXCLAMATION);
    return 1;
  }
  do
  {
    pref = _ltoa(l, buff, 10);
    pref += _T("_");
    if (!m_SourceFile.Open(newpath + pref + m_filename, CFile::modeRead | CFile
      ::shareExclusive | CFile::typeBinary, &ex))
    {
      TCHAR szError[1024];
      ex.GetErrorMessage(szError, 1024);
      destFile.Close();
      m_path = _T("");
      m_filename = _T("");
      newpath = _T("");
      UpdateData(FALSE);

      return 0;
    }
    else
      name = _T(newpath + pref + m_filename);
    do
    {
      dwRead = m_SourceFile.Read(buffer, nCount);
      destFile.Write(buffer, dwRead);
    }
    while (dwRead > 0);

    m_SourceFile.Close()   ;

    pProgress.SetRange(0, 500);
    for (int i = 0; i < 500; i++)
      pProgress.SetPos(i);
    m_parts = _ltoa(l, buff, 10);
    m_parts += _T("个文件已合并");
    UpdateData(FALSE);
    l++;
    UpdateWindow();
  }    while (l < 500)     ;

  return 0;
}
 


int CFileSpltDlg::SplitMe() //文件分割涵数

{

	CWaitCursor wait;

	

	CFile destFile;

	

	CFileException ex;

	

	DWORD dwRead;

	UINT newlen;

	char buff [20];

	char b [20];

	long l = 1;

	CString name;

	UINT len = 0;

	

	UpdateData(TRUE);

	

	

    newlen=GetSplitFileSize(); 	
//获取文件分割后的大小，定义相对应变量数值

	UINT nCount = newlen/10;

    BYTE buffer[140000];

	

	if (!m_path.IsEmpty())

	{

	if (!m_SourceFile.Open(m_path, CFile::modeRead | 
        CFile::shareDenyNone| CFile::typeBinary, &ex))

    {

		TCHAR szError[1024];

		ex.GetErrorMessage(szError, 1024);

		::AfxMessageBox(szError);

		m_edit.SetFocus();

		m_edit.SetSel(0, -1);

		return 1;

		}

		len = m_SourceFile.GetLength();

	}

	else

	{

	MessageBox(_T("请选择待分割的源文件."), 
                   _T("文件分割器"), MB_ICONEXCLAMATION);

		return 1;

	}

	if (m_targetpath.IsEmpty())

	{

	MessageBox(_T("请选择分割后保存到的目标文件夹."),
                   _T("文件分割器"),MB_ICONEXCLAMATION);

		return 1;

	}

	

	if (len < newlen)

	{

	CString length = _itoa(len, b, 10);

	MessageBox(_T("文件长度为 " + length + 
        " 字节，不够指定的分割大小， 没有必要再进行分割."),

        _T("文件分割器"), MB_ICONEXCLAMATION);

		m_SourceFile.Close();

		m_path = _T("");

		m_filename = _T("");

		UpdateData(FALSE);

		return 1;

	}

	

	do {

		name = _ltoa(l, buff, 10);

		name += _T("_");

		CString newpath;

		

		//判断选择目录未尾是否已有"\"符

		if(m_targetpath.Right(1)=='\\')

			newpath = m_targetpath;

		else

			newpath = m_targetpath + _T("\\");

		if (!destFile.Open(
                   newpath + name + m_SourceFile.GetFileName(),

			CFile::modeWrite		|

			CFile::shareExclusive	|

			CFile::typeBinary		|

			CFile::modeCreate, &ex)) {

			TCHAR szError[1024];

			ex.GetErrorMessage(szError, 1024);

			::AfxMessageBox(szError);

			m_SourceFile.Close();

			return 1;

		}

		do

		{

		  dwRead = m_SourceFile.Read(buffer, nCount);

		     destFile.Write(buffer, dwRead);

		}while (dwRead > 0 
                        && destFile.GetLength() < newlen);

		

		destFile.Close();

		pProgress.SetRange(0, len /newlen*10);

		

		pProgress.SetPos(l);

		m_parts = _ltoa(l , buff, 10);

		m_parts += _T("个文件生成");

		UpdateData(FALSE);

		l++;

		UpdateWindow();

		

	}while (dwRead > 0);

	

	m_SourceFile.Close();

	m_path = _T("");

	m_filename = _T("");

	UpdateData(FALSE);

	

	return 0;

}


 


目录浏览： 
void CFileSpltDlg::OnBrowse()
{
static char BASED_CODE szSplitFilter[] = _T("待分割文件(*.*)|*.*||");
static char BASED_CODE szMergeFilter[] = _T("待合并文件(1_*.*)|1_*.*||");

CString filter;
if (!m_split)
filter = szMergeFilter;
else
filter = szSplitFilter;

CFileDialog dlg(TRUE,
NULL,
NULL,
OFN_HIDEREADONLY |
OFN_OVERWRITEPROMPT |
OFN_FILEMUSTEXIST,
filter,
0);

if (dlg.DoModal() == IDOK)
{
m_path = dlg.GetPathName();
m_filename = dlg.GetFileName();
UpdateData(FALSE);
}

}