atlmisc.h

文件加密器使用说明 本软件可以加密需要保护的数据文件

		for (; *lpsz != '\0'; lpsz = ::CharNext(lpsz))
		{
			// check for valid flags
			if (*lpsz == '#')
				nMaxLen += 2;   // for '0x'
			else if (*lpsz == '*')
				nWidth = va_arg(argList, int);
			else if (*lpsz == '-' || *lpsz == '+' || *lpsz == '0' || *lpsz == ' ')
				;
			else // hit non-flag character
				break;
		}
		// get width and skip it
		if (nWidth == 0)
		{
			// width indicated by
			nWidth = _cstrtoi(lpsz);
			for (; *lpsz != '\0' && _cstrisdigit(*lpsz); lpsz = ::CharNext(lpsz))
				;
		}
		ATLASSERT(nWidth >= 0);

		int nPrecision = 0;
		if (*lpsz == '.')
		{
			// skip past '.' separator (width.precision)
			lpsz = ::CharNext(lpsz);

			// get precision and skip it
			if (*lpsz == '*')
			{
				nPrecision = va_arg(argList, int);
				lpsz = ::CharNext(lpsz);
			}
			else
			{
				nPrecision = _cstrtoi(lpsz);
				for (; *lpsz != '\0' && _cstrisdigit(*lpsz); lpsz = ::CharNext(lpsz))
					;
			}
			ATLASSERT(nPrecision >= 0);
		}

		// should be on type modifier or specifier
		int nModifier = 0;
		if(lpsz[0] == _T('I') && lpsz[1] == _T('6') && lpsz[2] == _T('4'))
		{
			lpsz += 3;
			nModifier = FORCE_INT64;
		}
		else
		{
			switch (*lpsz)
			{
			// modifiers that affect size
			case 'h':
				nModifier = FORCE_ANSI;
				lpsz = ::CharNext(lpsz);
				break;
			case 'l':
				nModifier = FORCE_UNICODE;
				lpsz = ::CharNext(lpsz);
				break;

			// modifiers that do not affect size
			case 'F':
			case 'N':
			case 'L':
				lpsz = ::CharNext(lpsz);
				break;
			}
		}

		// now should be on specifier
		switch (*lpsz | nModifier)
		{
		// single characters
		case 'c':
		case 'C':
			nItemLen = 2;
			va_arg(argList, TCHAR);
			break;
		case 'c' | FORCE_ANSI:
		case 'C' | FORCE_ANSI:
			nItemLen = 2;
			va_arg(argList, char);
			break;
		case 'c' | FORCE_UNICODE:
		case 'C' | FORCE_UNICODE:
			nItemLen = 2;
			va_arg(argList, WCHAR);
			break;

		// strings
		case 's':
		{
			LPCTSTR pstrNextArg = va_arg(argList, LPCTSTR);
			if (pstrNextArg == NULL)
			{
				nItemLen = 6;  // "(null)"
			}
			else
			{
				nItemLen = lstrlen(pstrNextArg);
				nItemLen = max(1, nItemLen);
			}
			break;
		}

		case 'S':
		{
#ifndef _UNICODE
			LPWSTR pstrNextArg = va_arg(argList, LPWSTR);
			if (pstrNextArg == NULL)
			{
				nItemLen = 6;  // "(null)"
			}
			else
			{
				nItemLen = (int)wcslen(pstrNextArg);
				nItemLen = max(1, nItemLen);
			}
#else //_UNICODE
			LPCSTR pstrNextArg = va_arg(argList, LPCSTR);
			if (pstrNextArg == NULL)
			{
				nItemLen = 6; // "(null)"
			}
			else
			{
				nItemLen = lstrlenA(pstrNextArg);
				nItemLen = max(1, nItemLen);
			}
#endif //_UNICODE
			break;
		}

		case 's' | FORCE_ANSI:
		case 'S' | FORCE_ANSI:
		{
			LPCSTR pstrNextArg = va_arg(argList, LPCSTR);
			if (pstrNextArg == NULL)
			{
				nItemLen = 6; // "(null)"
			}
			else
			{
				nItemLen = lstrlenA(pstrNextArg);
				nItemLen = max(1, nItemLen);
			}
			break;
		}

		case 's' | FORCE_UNICODE:
		case 'S' | FORCE_UNICODE:
		{
			LPWSTR pstrNextArg = va_arg(argList, LPWSTR);
			if (pstrNextArg == NULL)
			{
				nItemLen = 6; // "(null)"
			}
			else
			{
				nItemLen = (int)wcslen(pstrNextArg);
				nItemLen = max(1, nItemLen);
			}
			break;
		}
		}

		// adjust nItemLen for strings
		if (nItemLen != 0)
		{
			nItemLen = max(nItemLen, nWidth);
			if (nPrecision != 0)
				nItemLen = min(nItemLen, nPrecision);
		}
		else
		{
			switch (*lpsz)
			{
			// integers
			case 'd':
			case 'i':
			case 'u':
			case 'x':
			case 'X':
			case 'o':
				if (nModifier & FORCE_INT64)
					va_arg(argList, __int64);
				else
					va_arg(argList, int);
				nItemLen = 32;
				nItemLen = max(nItemLen, nWidth + nPrecision);
				break;

#ifndef _ATL_USE_CSTRING_FLOAT
			case 'e':
			case 'E':
			case 'f':
			case 'g':
			case 'G':
				ATLASSERT(!"Floating point (%%e, %%E, %%f, %%g, and %%G) is not supported by the WTL::CString class.");
#ifndef _DEBUG
				::OutputDebugString(_T("Floating point (%%e, %%f, %%g, and %%G) is not supported by the WTL::CString class."));
#ifndef _WIN32_WCE
				::DebugBreak();
#else // CE specific
				DebugBreak();
#endif //_WIN32_WCE
#endif //!_DEBUG
				break;
#else //_ATL_USE_CSTRING_FLOAT
			case 'e':
			case 'E':
			case 'g':
			case 'G':
				va_arg(argList, double);
				nItemLen = 128;
				nItemLen = max(nItemLen, nWidth + nPrecision);
				break;
			case 'f':
				{
					double f;
					LPTSTR pszTemp;

					// 312 == strlen("-1+(309 zeroes).")
					// 309 zeroes == max precision of a double
					// 6 == adjustment in case precision is not specified,
					//   which means that the precision defaults to 6
					pszTemp = (LPTSTR)_alloca(max(nWidth, 312 + nPrecision + 6));

					f = va_arg(argList, double);
					_stprintf(pszTemp, _T( "%*.*f" ), nWidth, nPrecision + 6, f);
					nItemLen = _tcslen(pszTemp);
				}
				break;
#endif //_ATL_USE_CSTRING_FLOAT

			case 'p':
				va_arg(argList, void*);
				nItemLen = 32;
				nItemLen = max(nItemLen, nWidth + nPrecision);
				break;

			// no output
			case 'n':
				va_arg(argList, int*);
				break;

			default:
				ATLASSERT(FALSE);  // unknown formatting option
			}
		}

		// adjust nMaxLen for output nItemLen
		nMaxLen += nItemLen;
	}

	if(GetBuffer(nMaxLen) == NULL)
		return FALSE;
#ifndef _ATL_USE_CSTRING_FLOAT
	int nRet = wvsprintf(m_pchData, lpszFormat, argListSave);
#else //_ATL_USE_CSTRING_FLOAT
	int nRet = _vstprintf(m_pchData, lpszFormat, argListSave);
#endif //_ATL_USE_CSTRING_FLOAT
	nRet;   // ref
	ATLASSERT(nRet <= GetAllocLength());
	ReleaseBuffer();

	va_end(argListSave);
	return TRUE;
}

// formatting (using wsprintf style formatting)
inline BOOL __cdecl CString::Format(LPCTSTR lpszFormat, ...)
{
	ATLASSERT(_IsValidString(lpszFormat));

	va_list argList;
	va_start(argList, lpszFormat);
	BOOL bRet = FormatV(lpszFormat, argList);
	va_end(argList);
	return bRet;
}

inline BOOL __cdecl CString::Format(UINT nFormatID, ...)
{
	CString strFormat;
	BOOL bRet = strFormat.LoadString(nFormatID);
	ATLASSERT(bRet != 0);

	va_list argList;
	va_start(argList, nFormatID);
	bRet = FormatV(strFormat, argList);
	va_end(argList);
	return bRet;
}

// formatting (using FormatMessage style formatting)
inline BOOL __cdecl CString::FormatMessage(LPCTSTR lpszFormat, ...)
{
	// format message into temporary buffer lpszTemp
	va_list argList;
	va_start(argList, lpszFormat);
	LPTSTR lpszTemp;
	BOOL bRet = TRUE;

	if (::FormatMessage(FORMAT_MESSAGE_FROM_STRING | FORMAT_MESSAGE_ALLOCATE_BUFFER,
			lpszFormat, 0, 0, (LPTSTR)&lpszTemp, 0, &argList) == 0 || lpszTemp == NULL)
		bRet = FALSE;

	// assign lpszTemp into the resulting string and free the temporary
	*this = lpszTemp;
	LocalFree(lpszTemp);
	va_end(argList);
	return bRet;
}

inline BOOL __cdecl CString::FormatMessage(UINT nFormatID, ...)
{
	// get format string from string table
	CString strFormat;
	BOOL bRetTmp = strFormat.LoadString(nFormatID);
	bRetTmp;   // ref
	ATLASSERT(bRetTmp != 0);

	// format message into temporary buffer lpszTemp
	va_list argList;
	va_start(argList, nFormatID);
	LPTSTR lpszTemp;
	BOOL bRet = TRUE;

	if (::FormatMessage(FORMAT_MESSAGE_FROM_STRING | FORMAT_MESSAGE_ALLOCATE_BUFFER,
			strFormat, 0, 0, (LPTSTR)&lpszTemp, 0, &argList) == 0 || lpszTemp == NULL)
		bRet = FALSE;

	// assign lpszTemp into the resulting string and free lpszTemp
	*this = lpszTemp;
	LocalFree(lpszTemp);
	va_end(argList);
	return bRet;
}

inline void CString::TrimRight()
{
	CopyBeforeWrite();

	// find beginning of trailing spaces by starting at beginning (DBCS aware)
	LPTSTR lpsz = m_pchData;
	LPTSTR lpszLast = NULL;
	while (*lpsz != '\0')
	{
		if (_cstrisspace(*lpsz))
		{
			if (lpszLast == NULL)
				lpszLast = lpsz;
		}
		else
		{
			lpszLast = NULL;
		}
		lpsz = ::CharNext(lpsz);
	}

	if (lpszLast != NULL)
	{
		// truncate at trailing space start
		*lpszLast = '\0';
		GetData()->nDataLength = (int)(DWORD_PTR)(lpszLast - m_pchData);
	}
}

inline void CString::TrimLeft()
{
	CopyBeforeWrite();

	// find first non-space character
	LPCTSTR lpsz = m_pchData;
	while (_cstrisspace(*lpsz))
		lpsz = ::CharNext(lpsz);

	// fix up data and length
	int nDataLength = GetData()->nDataLength - (int)(DWORD_PTR)(lpsz - m_pchData);
	memmove(m_pchData, lpsz, (nDataLength + 1) * sizeof(TCHAR));
	GetData()->nDataLength = nDataLength;
}

inline void CString::TrimRight(LPCTSTR lpszTargetList)
{
	// find beginning of trailing matches
	// by starting at beginning (DBCS aware)

	CopyBeforeWrite();
	LPTSTR lpsz = m_pchData;
	LPTSTR lpszLast = NULL;

	while (*lpsz != '\0')
	{
		TCHAR* pNext = ::CharNext(lpsz);
		if(pNext > lpsz + 1)
		{
			if (_cstrchr_db(lpszTargetList, *lpsz, *(lpsz + 1)) != NULL)
			{
				if (lpszLast == NULL)
					lpszLast = lpsz;
			}
			else
			{
				lpszLast = NULL;
			}
		}
		else
		{
			if (_cstrchr(lpszTargetList, *lpsz) != NULL)
			{
				if (lpszLast == NULL)
					lpszLast = lpsz;
			}
			else
			{
				lpszLast = NULL;
			}
		}

		lpsz = pNext;
	}

	if (lpszLast != NULL)
	{
		// truncate at left-most matching character
		*lpszLast = '\0';
		GetData()->nDataLength = (int)(DWORD_PTR)(lpszLast - m_pchData);
	}
}

inline void CString::TrimRight(TCHAR chTarget)
{
	// find beginning of trailing matches
	// by starting at beginning (DBCS aware)

	CopyBeforeWrite();
	LPTSTR lpsz = m_pchData;
	LPTSTR lpszLast = NULL;

	while (*lpsz != '\0')
	{
		if (*lpsz == chTarget)
		{
			if (lpszLast == NULL)
				lpszLast = lpsz;
		}
		else
			lpszLast = NULL;
		lpsz = ::CharNext(lpsz);
	}

	if (lpszLast != NULL)
	{
		// truncate at left-most matching character
		*lpszLast = '\0';
		GetData()->nDataLength = (int)(DWORD_PTR)(lpszLast - m_pchData);
	}
}

inline void CString::TrimLeft(LPCTSTR lpszTargets)
{
	// if we're not trimming anything, we're not doing any work
	if (SafeStrlen(lpszTargets) == 0)
		return;

	CopyBeforeWrite();
	LPCTSTR lpsz = m_pchData;

	while (*lpsz != '\0')
	{
		TCHAR* pNext = ::CharNext(lpsz);
		if(pNext > lpsz + 1)
		{
			if (_cstrchr_db(lpszTargets, *lpsz, *(lpsz + 1)) == NULL)
				break;
		}
		else
		{
			if (_cstrchr(lpszTargets, *lpsz) == NULL)
				break;
		}
		lpsz = pNext;
	}

	if (lpsz != m_pchData)
	{
		// fix up data and length
		int nDataLength = GetData()->nDataLength - (int)(DWORD_PTR)(lpsz - m_pchData);
		memmove(m_pchData, lpsz, (nDataLength + 1) * sizeof(TCHAR));
		GetData()->nDataLength = nDataLength;
	}
}

inline void CString::TrimLeft(TCHAR chTarget)
{
	// find first non-matching character

	CopyBeforeWrite();
	LPCTSTR lpsz = m_pchData;

	while (chTarget == *lpsz)
		lpsz = ::CharNext(lpsz);

	if (lpsz != m_pchData)
	{
		// fix up data and length
		int nDataLength = GetData()->nDataLength - (int)(DWORD_PTR)(lpsz - m_pchData);
		memmove(m_pchData, lpsz, (nDataLength + 1) * sizeof(TCHAR));
		GetData()->nDataLength = nDataLength;
	}
}

inline int CString::Delete(int nIndex, int nCount /* = 1 */)
{
	if (nIndex < 0)
		nIndex = 0;
	int nLength = GetData()->nDataLength;
	if (nCount > 0 && nIndex < nLength)
	{