一、判断文件及文件夹是否存在
// 判断文件是否存在 BOOL IsFileExist(const CString& csFile) { DWORD dwAttrib = GetFileAttributes(csFile); return INVALID_FILE_ATTRIBUTES != dwAttrib && 0 == (dwAttrib & FILE_ATTRIBUTE_DIRECTORY); } // 判断文件夹是否存在 BOOL IsDirExist(const CString & csDir) { DWORD dwAttrib = GetFileAttributes(csDir); return INVALID_FILE_ATTRIBUTES != dwAttrib && 0 != (dwAttrib & FILE_ATTRIBUTE_DIRECTORY); } // 判断文件或文件夹是否存在 BOOL IsPathExist(const CString & csPath) { DWORD dwAttrib = GetFileAttributes(csPath); return INVALID_FILE_ATTRIBUTES != dwAttrib; } // 判断文件或文件夹是否存在 BOOL IsPathExistEx(const CString & csPath) { WIN32_FILE_ATTRIBUTE_DATA attrs = { 0 }; return 0 != GetFileAttributesEx(csPath, GetFileExInfoStandard, &attrs); }
二、创建及删除目录
// 创建目录
BOOL CreateFolder(CString strPath) { SECURITY_ATTRIBUTES attrib; attrib.bInheritHandle = FALSE; attrib.lpSecurityDescriptor = NULL; attrib.nLength = sizeof(SECURITY_ATTRIBUTES); return ::CreateDirectory(strPath, &attrib); //return ::CreateDirectory(strPath,NULL); }
// 删除目录及子目录 BOOL DeleteDirectory(CString DirName) { CString PUBPATH; PUBPATH = DirName; CFileFind tempFind; DirName += "\*.*"; BOOL IsFinded = (BOOL)tempFind.FindFile(DirName); while(IsFinded) { IsFinded = (BOOL)tempFind.FindNextFile(); if(!tempFind.IsDots()) { CString strDirName; strDirName += PUBPATH; strDirName += "\"; strDirName += tempFind.GetFileName(); if(tempFind.IsDirectory()) { DeleteDirectory(strDirName); } else { SetFileAttributes(strDirName, FILE_ATTRIBUTE_NORMAL); //去掉文件的系统和隐藏属性 DeleteFile(strDirName); } } } tempFind.Close(); if(!RemoveDirectory(PUBPATH)) { return FALSE ; } return TRUE; }
三、查看指定根目录下目录个数
// 获取目录数
int GetDirNum(CString strPath) { int nDirNum = 0; CFileFind tempFind; BOOL bFound; bFound = tempFind.FindFile(strPath + _T("\*.*")); while (bFound) { bFound = tempFind.FindNextFile(); if(!tempFind.IsDots()) { if(tempFind.IsDirectory()) // 判断是否为文件夹 nDirNum++; } } tempFind.Close(); return nDirNum; }
四、文件记录操作
// 文件末尾写入记录 （以时间为例）
void WriteRecord(time_t tm, CString strRecordFilePath) { CTime ctm(tm); CString strTime = ctm.Format(_T("%Y-%m-%d %H_%M_%S")); CStdioFile stdioFile; if (stdioFile.Open(strRecordFilePath, CFile::modeWrite)) { stdioFile.SeekToEnd(); stdioFile.WriteString(strTime); stdioFile.Close(); } }
// 读取第一条记录 CString ReadRecord(CString strRecordFilePath) { CString strFirstRecord = _T(""); CStdioFile stdioFile; if (stdioFile.Open(strRecordFilePath, CFile::modeReadWrite)) { stdioFile.SeekToBegin(); stdioFile.ReadString(strFirstRecord); stdioFile.Close(); } return strFirstRecord; }
// 删除第一条记录 void DeleteRecord(CString strRecordFilePath) { vector<CString> vecStr; CString strTemp; CStdioFile stdioFile; if (stdioFile.Open(strRecordFilePath, CFile::modeNoTruncate|CFile::modeRead)) { stdioFile.ReadString(strTemp); while (stdioFile.ReadString(strTemp)) { vecStr.push_back(strTemp); } stdioFile.Close(); stdioFile.Open(strRecordFilePath, CFile::modeCreate|CFile::modeWrite); for (int i = 0; i < (int)vecStr.size(); i++) { stdioFile.WriteString(vecStr[i]); } stdioFile.Close(); } }
五、CCeFileFind — wince
由于wince中不支持CFileFind，在此提供网上查找的CCeFileFind类，经过实践证明可用。
//================================头文件=================================== #if !defined _CEFILEFIND_H_ #define _CEFILEFIND_H_ // CeFileFind.h : header file #include <afxwin.h> ///////////////////////////////////////////////////////////////////////////// // CCeFileFind window class CCeFileFind : public CWnd { // Construction public: CCeFileFind( ); public: // Operations void Close(); virtual BOOL FindNextFile( ); virtual BOOL FindFile( LPCTSTR pstrName = NULL); public: // Attributes //Gets the length of the found file, in bytes. DWORD GetLength() const; //Gets the name, including the extension, of the found file CString GetFileName() const; //Gets the whole path of the found file. CString GetFilePath() const; //Gets the whole path of the found file. CString GetRoot() const; // to get the time the specified file was created virtual BOOL GetCreationTime( FILETIME* pFileTime ) const; virtual BOOL GetCreationTime( CTime& refTime ) const; //Gets the time that the file was last accessed. virtual BOOL GetLastAccessTime( CTime& refTime ) const; virtual BOOL GetLastAccessTime( FILETIME* pFileTime ) const; //Gets the time the file was last changed and saved. virtual BOOL GetLastWriteTime( FILETIME* pFileTime ) const; virtual BOOL GetLastWriteTime( CTime& refTime ) const; //Indicates the desired file attributes of the file to be found. virtual BOOL MatchesMask( DWORD dwMask ) const; //Determines if the name of the found file has the name "." or "..", //indicating that is actually a directory. virtual BOOL IsDots( ) const; //Determines if the found file is read-only. BOOL IsReadOnly( ) const; //Determines if the found file is a directory. BOOL IsDirectory( ) const; //Determines if the found file is compressed. BOOL IsCompressed( ) const; //Determines if the found file is a system file. BOOL IsSystem( ) const; //Determines if the found file is hidden. BOOL IsHidden( ) const; //Determines if the found file is temporary. BOOL IsTemporary( ) const; //Determines if the found file is normal (in other words, has no other attributes). BOOL IsNormal( ) const; //Determines if the found file is archived. BOOL IsArchived( ) const; // Implementation public: virtual ~CCeFileFind(); private: LPWIN32_FIND_DATA m_pfiledata; LPWIN32_FIND_DATA m_pNextdata; CString m_csRoot; HANDLE m_hFileHandle; char m_chDirSeparator; void AssertDoneNext() const; }; #endif // !defined _CEFILEFIND_H_
//====================================源文件=============================== // CeFileFind.cpp : implementation file // #include "stdafx.h" #include "CeFileFind.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif #define DELETE_POINTER(ptr) if( ptr != NULL ) { delete ptr; ptr = NULL; } #define DIR_SEPERATOR '\' ///////////////////////////////////////////////////////////////////////////// // CCeFileFind CCeFileFind::CCeFileFind() :m_hFileHandle(NULL), // initialize to NULL m_pfiledata(NULL) { } CCeFileFind::~CCeFileFind() { Close(); } // Operations BOOL CCeFileFind::FindFile(LPCTSTR pstrName) { //Close(); // if NULL , wild card search if( NULL == pstrName ) { m_csRoot = DIR_SEPERATOR; pstrName = _T("\*.*"); } else { m_csRoot = pstrName; int nPos = m_csRoot.ReverseFind( '\' ); if( nPos == 0 ) m_csRoot = '\'; else m_csRoot = m_csRoot.Left( nPos ); } m_pNextdata = new WIN32_FIND_DATA; // search for file m_hFileHandle = FindFirstFile( pstrName, m_pNextdata ); if ( m_hFileHandle == INVALID_HANDLE_VALUE ) { Close(); return FALSE; } // file was found return TRUE; } BOOL CCeFileFind::FindNextFile() { ASSERT(m_hFileHandle != NULL); if (m_hFileHandle == NULL) return FALSE; if (m_pfiledata == NULL) m_pfiledata = new WIN32_FIND_DATA; AssertDoneNext(); LPWIN32_FIND_DATA pTemp = m_pfiledata; m_pfiledata = m_pNextdata; m_pNextdata = pTemp; return ::FindNextFile(m_hFileHandle, m_pNextdata); } void CCeFileFind::Close() { DELETE_POINTER( m_pfiledata ); DELETE_POINTER( m_pNextdata ); if( m_hFileHandle!= NULL && m_hFileHandle != INVALID_HANDLE_VALUE ) { ::FindClose( m_hFileHandle ); m_hFileHandle = NULL; } } BOOL CCeFileFind::MatchesMask(DWORD dwMask) const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if ( m_pfiledata != NULL) return (!!(m_pfiledata->dwFileAttributes & dwMask) ); else return FALSE; } CString CCeFileFind::GetRoot() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) return m_csRoot; else return CString(""); } BOOL CCeFileFind::GetLastAccessTime(FILETIME* pTimeStamp) const { ASSERT(m_hFileHandle != NULL); ASSERT(pTimeStamp != NULL); AssertDoneNext(); if (m_pfiledata != NULL && pTimeStamp != NULL) { *pTimeStamp = m_pfiledata -> ftLastAccessTime; return TRUE; } else return FALSE; } BOOL CCeFileFind::GetLastWriteTime(FILETIME* pTimeStamp) const { ASSERT(m_hFileHandle != NULL); ASSERT(pTimeStamp != NULL); AssertDoneNext(); if (m_pfiledata != NULL && pTimeStamp != NULL) { *pTimeStamp = m_pfiledata -> ftLastWriteTime; return TRUE; } else return FALSE; } BOOL CCeFileFind::GetCreationTime(FILETIME* pTimeStamp) const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL && pTimeStamp != NULL) { *pTimeStamp = m_pfiledata -> ftCreationTime; return TRUE; } else return FALSE; } BOOL CCeFileFind::GetLastAccessTime(CTime& refTime) const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { refTime = CTime( m_pfiledata -> ftLastAccessTime ); return TRUE; } else return FALSE; } BOOL CCeFileFind::GetLastWriteTime(CTime& refTime) const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { refTime = CTime( m_pfiledata -> ftLastWriteTime ); return TRUE; } else return FALSE; } BOOL CCeFileFind::GetCreationTime(CTime& refTime) const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { refTime = CTime( m_pfiledata -> ftCreationTime ); return TRUE; } else return FALSE; } BOOL CCeFileFind::IsDots() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); // return TRUE if the file name is "." or ".." and // the file is a directory BOOL bResult = FALSE; if (m_pfiledata != NULL && IsDirectory()) { LPWIN32_FIND_DATA pFindData = m_pfiledata; if (pFindData->cFileName[0] == '.') { if (pFindData->cFileName[1] == ' ' || (pFindData->cFileName[1] == '.' && pFindData->cFileName[2] == ' ')) { bResult = TRUE; } } } return bResult; } BOOL CCeFileFind::IsArchived( ) const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { if( m_pfiledata -> dwFileAttributes == FILE_ATTRIBUTE_ARCHIVE ) return TRUE; else return FALSE; } return FALSE; } BOOL CCeFileFind::IsCompressed() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { if( m_pfiledata -> dwFileAttributes == FILE_ATTRIBUTE_COMPRESSED ) return TRUE; else return FALSE; } return FALSE; } BOOL CCeFileFind::IsDirectory() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { if( m_pfiledata -> dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) return TRUE; else return FALSE; } return FALSE; } BOOL CCeFileFind::IsHidden() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { if( m_pfiledata -> dwFileAttributes & FILE_ATTRIBUTE_HIDDEN ) return TRUE; else return FALSE; } return FALSE; } BOOL CCeFileFind::IsNormal() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { if( m_pfiledata -> dwFileAttributes & FILE_ATTRIBUTE_NORMAL ) return TRUE; else return FALSE; } return FALSE; } BOOL CCeFileFind::IsReadOnly() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { if( m_pfiledata -> dwFileAttributes & FILE_ATTRIBUTE_READONLY ) return TRUE; else return FALSE; } return FALSE; } BOOL CCeFileFind::IsSystem() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { if( m_pfiledata -> dwFileAttributes & FILE_ATTRIBUTE_SYSTEM ) return TRUE; else return FALSE; } return FALSE; } BOOL CCeFileFind::IsTemporary() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) { if( m_pfiledata -> dwFileAttributes & FILE_ATTRIBUTE_TEMPORARY ) return TRUE; else return FALSE; } return FALSE; } CString CCeFileFind::GetFilePath() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); CString csResult = m_csRoot; if (csResult[csResult.GetLength()-1] != DIR_SEPERATOR ) csResult += DIR_SEPERATOR; csResult += GetFileName(); return csResult; } CString CCeFileFind::GetFileName() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); CString ret; if (m_pfiledata != NULL) ret = m_pfiledata->cFileName; return ret; } DWORD CCeFileFind::GetLength() const { ASSERT(m_hFileHandle != NULL); AssertDoneNext(); if (m_pfiledata != NULL) return m_pfiledata -> nFileSizeLow; else return 0; } void CCeFileFind::AssertDoneNext() const { // if you trip the ASSERT in the else side, you've called // a Get() function without having done at least one // FindNextFile() call if (m_hFileHandle == NULL) ASSERT( m_pfiledata == NULL && m_pNextdata == NULL); else ASSERT( m_pfiledata != NULL && m_pNextdata != NULL); }