fileinfo.cpp

模拟迅雷的下载工具软件

// FileInfo.cpp: implementation of the CFileInfo class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "LeoBlock2004.h"
#include "FileInfo.h"

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

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CFileInfo::CFileInfo()
{

}

CFileInfo::CFileInfo(LPCTSTR lpszFileName)
{
	m_strFileName=lpszFileName;
	//把一个路径名称分解成组成成分
	_splitpath(m_strFileName,m_szDrive,m_szDir,m_szFname,m_szExt);


}

CFileInfo::~CFileInfo()
{

}

BOOL CFileInfo::BrowseForFolder(CWnd *pParentWnd)
{
	//申请一个指向IMalloc对象的指针
	LPMALLOC pMalloc;
	//得到一个指向外壳的IMalloc指针
	if(::SHGetMalloc(&pMalloc)!=NOERROR)
		return FALSE;
	
	//申请BROWSEINFO结构
	BROWSEINFO bInfo;
	//申请LPITEMIDLIST结构
	LPITEMIDLIST pidl;
	//申请空间为BROWSEINFO结构大小的内存
	ZeroMemory((PVOID)&bInfo,sizeof(BROWSEINFO));

	if(!m_strInitDir.IsEmpty())
	{
		OLECHAR olePath[MAX_PATH];
		ULONG   chEaten;
		ULONG   dwAttributes;
		HRESULT hr;
		LPSHELLFOLDER pDesktopFolder;

		//得到桌面的IShellFolder蚧面，它是外壳名字域的根目录
		if(SUCCEEDED(SHGetDesktopFolder(&pDesktopFolder)))
		{
			//IShellFolder::ParseDisplayName()函数需要使用UNICODE编码
			//将字符串编码变为UNICODE编码方式
			MultiByteToWideChar(CP_ACP,MB_PRECOMPOSED,m_strInitDir.GetBuffer(MAX_PATH),-1,olePath,MAX_PATH);

			m_strInitDir.ReleaseBuffer(-1);

			//将路径转换为ITEMIDLIST
			hr=pDesktopFolder->ParseDisplayName(NULL,NULL,olePath,&chEaten,&pidl,&dwAttributes);
			if(FAILED(hr))
			{
				pMalloc->Free(pidl);
				pMalloc->Release();
				return FALSE;

			}

			bInfo.pidlRoot=pidl;
			
		}
	}

	bInfo.hwndOwner=pParentWnd->GetSafeHwnd();
	bInfo.pszDisplayName=m_strPath.GetBuffer(MAX_PATH);
	bInfo.lpszTitle=(m_strTitle.IsEmpty()) ? "Open" : m_strTitle;
	bInfo.ulFlags=BIF_RETURNFSANCESTORS|BIF_RETURNONLYFSDIRS;
	//设定回调函数入囗
	bInfo.lpfn=BrowseCallbackProc;  
	bInfo.lParam=(LPARAM)this;

	if((pidl=::SHBrowseForFolder(&bInfo))==NULL)
		return FALSE;

	m_strPath.ReleaseBuffer();
	m_iImageIndex=bInfo.iImage;

	if(::SHGetPathFromIDList(pidl,m_strPath.GetBuffer(MAX_PATH))==FALSE)
	{
		pMalloc->Free(pidl);
		pMalloc->Release();
		return FALSE;
	}

	m_strPath.ReleaseBuffer();

	pMalloc->Free(pidl);
	pMalloc->Release();

	return TRUE;
}

CString CFileInfo::GetFileName()
{
	CString str;
	str.Format("%s%s",m_szFname,m_szExt);
	return str;
}
CString CFileInfo::GetRoot()
{
	CString str;
	str.Format("%s%s",m_szDrive,m_szDir);
	return str;

}
CString CFileInfo::GetFileTitle()
{
	return m_szFname;

}

CString CFileInfo::GetDescription()
{
	SHFILEINFO sfi;
	::SHGetFileInfo(m_strFileName,0,&sfi,sizeof(SHFILEINFO),SHGFI_TYPENAME);

	return sfi.szTypeName;

}
BOOL CFileInfo::Exist()
{
	//该函数用于判断一个文件或路径是否存在
	WIN32_FIND_DATA fd;
	CString szFindPath=m_strFileName;
	int nSlash=szFindPath.ReverseFind('\\');
	int nLength=szFindPath.GetLength();
	if(nSlash==nLength-1)
	{
		if(nLength==3)
			if(szFindPath.GetAt(1)==':')
				return true;
		else
			szFindPath=szFindPath.Left(nSlash);
	}

	HANDLE hFind=FindFirstFile(szFindPath,&fd);
	if(hFind!=INVALID_HANDLE_VALUE)
		FindClose(hFind);

	return hFind!=INVALID_HANDLE_VALUE;

}

int CFileInfo::GetIconIndex()
{
	SHFILEINFO sfi;
	::SHGetFileInfo(m_strFileName,0,&sfi,sizeof(SHFILEINFO),SHGFI_SYSICONINDEX|SHGFI_SMALLICON);

	return sfi.iIcon;
}
CString CFileInfo::GetDisplayName()
{
	SHFILEINFO sfi;
	::SHGetFileInfo(m_strFileName,0,&sfi,sizeof(SHFILEINFO),SHGFI_DISPLAYNAME);

	return sfi.szDisplayName;

}
CString CFileInfo::GetLastWriteTime()
{
	CString strTime;
	CTime time;
	m_pFoundFile->GetLastWriteTime(time);
	//格式化时间字符串
	strTime.Format("%.2d/%.2d/%d %.2d:%.2d",time.GetMonth(),time.GetDay(),time.GetYear(),time.GetHour(),time.GetSecond());

	return strTime;

}

CString CFileInfo::GetFileSize()
{
	CString strFileSize;
	CString strTemp;
	
	strTemp.Format(_T("%d"),m_pFoundFile->GetLength());
	int nSize=strTemp.GetLength()-1;
	int nCount=1;
	while(nSize>=0)
	{
		strFileSize+=strTemp.GetAt(nSize);
		if(nSize==0)
			break;
		if(nCount!=3)
			++nCount;
		else
		{
			strFileSize+=",";
			nCount=1;

		}

		nSize--;

	}

	strFileSize.MakeReverse();
	return strFileSize;
}

void CFileInfo::GetSystemImageList(CImageList *pSmallList,CImageList *pLargeList)
{
	//图像列表设置
	SHFILEINFO ssfi,lsfi;

	//得到系统小图标列表的句柄
	HIMAGELIST hSystemSmallImageList=(HIMAGELIST)::SHGetFileInfo((LPCTSTR)_T("C:\\"),0,&ssfi,sizeof(SHFILEINFO),SHGFI_SYSICONINDEX|SHGFI_SMALLICON);

	//使用系统小图标列表
	pSmallList->Attach(hSystemSmallImageList);

	//得到系统大图标列表的句柄
	HIMAGELIST hSystemLargeImageList=(HIMAGELIST)::SHGetFileInfo((LPCTSTR)_T("C:\\"),0,&lsfi,sizeof(SHFILEINFO),SHGFI_SYSICONINDEX|SHGFI_ICON);

	//使用系统大图标列表
	pLargeList->Attach(hSystemLargeImageList);

}

int CALLBACK CFileInfo::BrowseCallbackProc(HWND hwnd,UINT uMsg,LPARAM lParam,LPARAM lpData)
{
	CFileInfo *pShellFileInfo=(CFileInfo*)lpData;
	if(uMsg==BFFM_INITIALIZED && !pShellFileInfo->m_strSelDir.IsEmpty())
	{
		::SendMessage(hwnd,BFFM_SETSELECTION,TRUE,(LPARAM)(LPCTSTR)(pShellFileInfo->m_strSelDir));

	}
	else
	{
		//uMsg==BFFM_SELCHANGED
	}
	
	return FALSE;

}