Classes for Splitting and Joining files

// FileSplitPage.cpp : implementation file
//

#include "stdafx.h"
#include "SplitMerge.h"
#include "FileSplitPage.h"
#include "FileSplit.h"

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

/////////////////////////////////////////////////////////////////////////////
// CFileSplitPage property page

IMPLEMENT_DYNCREATE(CFileSplitPage, CPropertyPage)

CFileSplitPage::CFileSplitPage() : CPropertyPage(CFileSplitPage::IDD)
{
	//{{AFX_DATA_INIT(CFileSplitPage)
	m_nFileSize = 0;
	m_InputFile = _T("");
	m_nFiles = 0;
	m_OutputDir = _T("");
	m_nOutputtype = -1;
	//}}AFX_DATA_INIT

	m_nOutputtype = 0;
	m_nFiles = 10;
	m_nFileSize = 1024;
	m_bIsWorking = false;
}

CFileSplitPage::~CFileSplitPage()
{
}

void CFileSplitPage::DoDataExchange(CDataExchange* pDX)
{
	CPropertyPage::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CFileSplitPage)
	DDX_Control(pDX, IDC_BTN_SELINPUTFILE, m_SelFileBtn);
	DDX_Control(pDX, IDC_BTN_SELOUTPUTDIR, m_SelDirBtn);
	DDX_Control(pDX, IDC_PROGRESS_SPLIT, m_Progress);
	DDX_Text(pDX, IDC_EDIT_FILESIZE, m_nFileSize);
	DDX_Text(pDX, IDC_EDIT_INPUTFILE, m_InputFile);
	DDX_Text(pDX, IDC_EDIT_NFILES, m_nFiles);
	DDX_Text(pDX, IDC_EDIT_OUTPUTDIR, m_OutputDir);
	DDX_Radio(pDX, IDC_RDO_NFILES, m_nOutputtype);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CFileSplitPage, CPropertyPage)
	//{{AFX_MSG_MAP(CFileSplitPage)
	ON_BN_CLICKED(IDC_BTN_SELINPUTFILE, OnBtnSelinputfile)
	ON_BN_CLICKED(IDC_BTN_SELOUTPUTDIR, OnBtnSeloutputdir)
	ON_BN_CLICKED(IDC_BTN_STARTSPLIT, OnBtnStartsplit)
	ON_BN_CLICKED(IDC_RDO_FILESIZE, OnRdoFilesize)
	ON_BN_CLICKED(IDC_RDO_NFILES, OnRdoNfiles)
	//}}AFX_MSG_MAP
	ON_MESSAGE(WM_FS_UPDATESTATUS, OnUpdateStatus)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFileSplitPage message handlers

void CFileSplitPage::OnBtnSelinputfile() 
{
	// TODO: Add your control notification handler code here
	CFileDialog dlg(TRUE);
	if(dlg.DoModal()==IDOK)
	{
		UpdateData(TRUE);
		m_InputFile = dlg.GetPathName();
		if(m_OutputDir.IsEmpty())
		{
			m_OutputDir = m_InputFile.Left(m_InputFile.GetLength()-dlg.GetFileName().GetLength());
		}
		UpdateData(FALSE);
	}
	
}

void CFileSplitPage::OnBtnSeloutputdir() 
{

	// TODO: Add your control notification handler code here
	LPMALLOC pMalloc;
	/* Gets the Shell's default allocator */
	if (::SHGetMalloc(&pMalloc) == NOERROR)
	{
		UpdateData(TRUE);
		BROWSEINFO bi;
		char pszBuffer[MAX_PATH];
		LPITEMIDLIST pidl;
		// Get help on BROWSEINFO struct - it's got all the bit settings.
		bi.hwndOwner = GetSafeHwnd();
		bi.pidlRoot = NULL;
		bi.pszDisplayName = pszBuffer;
		bi.lpszTitle = _T("Select Path For Output Files");
		bi.ulFlags = BIF_RETURNFSANCESTORS | BIF_RETURNONLYFSDIRS;
		bi.lpfn = NULL;
		bi.lParam = 0;
		// This next call issues the dialog box.
		if ((pidl = ::SHBrowseForFolder(&bi)) != NULL)
		{
			if (::SHGetPathFromIDList(pidl, pszBuffer))
			{ 
			// At this point pszBuffer contains the selected path */.
				m_OutputDir = pszBuffer;
				UpdateData(FALSE);
			}
			// Free the PIDL allocated by SHBrowseForFolder.
			pMalloc->Free(pidl);
		}
		// Release the shell's allocator.
		pMalloc->Release();
	}
	
}

void CFileSplitPage::OnBtnStartsplit() 
{
	// TODO: Add your control notification handler code here
	if(!m_bIsWorking)
	{
		if(UpdateData(TRUE))
		{
			//validate
			if(m_InputFile.IsEmpty())
				return;
			int nSplitVal = m_nOutputtype==0?m_nFiles:(m_nFileSize*1024);
			if(nSplitVal==0)
				return;
			SetDlgItemText(IDC_SP_STATIC,"Creating Output Files...");
			EnableAllControls(FALSE);
			GetDlgItem(IDC_BTN_STARTSPLIT)->SetWindowText("Cancel");
			m_pFS = (CFileSplit*)(AfxBeginThread(RUNTIME_CLASS(CFileSplit)));
			m_pFS->m_pMainWnd = this;//AfxGetMainWnd();
			m_pFS->m_InputFileName = m_InputFile;
			m_pFS->m_OutputDirName = m_OutputDir;
			m_pFS->m_nSplitMode    = m_nOutputtype;
			m_pFS->m_nSplitVal	   = nSplitVal;
			
			m_pFS->PostThreadMessage(WM_FS_START,0,0);
			m_bIsWorking = true;
		}
	}
	else
	{
		//Cancel...
		m_pFS->PostThreadMessage(WM_FS_CANCEL,0,0);
		EnableAllControls(TRUE);
	}
	
}

void CFileSplitPage::OnRdoFilesize() 
{
	// TODO: Add your control notification handler code here
	GetDlgItem(IDC_EDIT_FILESIZE)->EnableWindow(TRUE);
	GetDlgItem(IDC_EDIT_NFILES)->EnableWindow(FALSE);
	
}

void CFileSplitPage::OnRdoNfiles() 
{
	// TODO: Add your control notification handler code here
	GetDlgItem(IDC_EDIT_FILESIZE)->EnableWindow(FALSE);
	GetDlgItem(IDC_EDIT_NFILES)->EnableWindow(TRUE);
	
}

void CFileSplitPage::EnableAllControls(BOOL bEnable)
{
	GetDlgItem(IDC_EDIT_INPUTFILE)->EnableWindow(bEnable);
	GetDlgItem(IDC_EDIT_OUTPUTDIR)->EnableWindow(bEnable);
	GetDlgItem(IDC_BTN_SELINPUTFILE)->EnableWindow(bEnable);
	GetDlgItem(IDC_BTN_SELOUTPUTDIR)->EnableWindow(bEnable);
	GetDlgItem(IDC_RDO_NFILES    )->EnableWindow(bEnable);
	GetDlgItem(IDC_RDO_FILESIZE  )->EnableWindow(bEnable);
	GetDlgItem(IDC_EDIT_FILESIZE)->EnableWindow(m_nOutputtype!=0 && bEnable);
	GetDlgItem(IDC_EDIT_NFILES)->EnableWindow(m_nOutputtype==0 && bEnable);
}



void CFileSplitPage::OnUpdateStatus(WPARAM wP, LPARAM lP)
{
	if(lP==0)
		m_Progress.SetPos((int)wP);
	if(lP==-1)
	{
		m_Progress.SetPos(0);
	MessageBox("Error splitting file, please check filenames", "Error",MB_ICONERROR);

		EnableAllControls(TRUE);
		GetDlgItem(IDC_BTN_STARTSPLIT)->SetWindowText("Start");
		GetDlgItem(IDC_SP_STATIC)->SetWindowText("Done");
		m_bIsWorking = false;

	}
	if(lP==1)
	{
		m_Progress.SetPos(100);
		EnableAllControls(TRUE);
		GetDlgItem(IDC_BTN_STARTSPLIT)->SetWindowText("Start");
		GetDlgItem(IDC_SP_STATIC)->SetWindowText("Done");
		m_bIsWorking = false;
	}

}

BOOL CFileSplitPage::OnInitDialog() 
{
	CPropertyPage::OnInitDialog();
	HICON hIcon = AfxGetApp()->LoadIcon(IDI_ICON_FOPEN);
	m_SelFileBtn.SetIcon(hIcon);
	m_SelDirBtn.SetIcon(hIcon);
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}