Leaked source code of windows server 2003
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#ifndef _HXX_FBSTR
#define _HXX_FBSTR
//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1992 - 1993.
//
// File: fbstr.hxx
//
// Contents: Wrappers around BSTR api to account for wierdness with NULL
//
// Functions: STRVAL
// ADsIsEmptyString
// ADsAllocString
// ADsAllocStringLen
// ADsReAllocString
// ADsReAllocStringLen
// ADsFreeString
// ADsStringLen
// ADsStringByteLen
// ADsAllocStringByteLen
// ADsStringCmp
// ADsStringNCmp
// ADsStringICmp
// ADsStringNICmp
//
// History: 25-Apr-94 adams Created
// 02-Jun-94 doncl removed TCHAR usage
// 7-20-94 adams Added ADsIsEmptyString
// 1-3-95 krishnaG Forms* > ADs*
//
//----------------------------------------------------------------------------
typedef const OLECHAR * CBSTR;
const WCHAR EMPTYSTRING[] = L"";
//+---------------------------------------------------------------------------
//
// Function: STRVAL
//
// Synopsis: Returns the string unless it is NULL, in which case the empty
// string is returned.
//
// History: 06-May-94 adams Created
// 02-Jun-94 doncl changed to STRVAL/LPCWSTR instead of
// TSTRVAL/LPCTSTR
//
//----------------------------------------------------------------------------
inline LPCWSTR
STRVAL(LPCWSTR lpcwsz)
{
return lpcwsz ? lpcwsz : EMPTYSTRING;
}
//+---------------------------------------------------------------------------
//
// Function: ADsIsEmptyString
//
// Synopsis: Returns TRUE if the string is empty, FALSE otherwise.
//
// History: 7-20-94 adams Created
//
//----------------------------------------------------------------------------
inline BOOL
ADsIsEmptyString(LPCWSTR lpcwsz)
{
return !(lpcwsz && lpcwsz[0]);
}
//+---------------------------------------------------------------------------
//
// Function: ADsFreeString
//
// Synopsis: Frees a BSTR.
//
// History: 5-06-94 adams Created
//
//----------------------------------------------------------------------------
inline void
ADsFreeString(BSTR bstr)
{
SysFreeString(bstr);
}
STDAPI ADsAllocString(const OLECHAR * pch, BSTR * pBSTR);
STDAPI ADsAllocStringLen(const OLECHAR * pch, UINT uc, BSTR * pBSTR);
STDAPI ADsReAllocString(BSTR * pBSTR, const OLECHAR * pch);
STDAPI ADsReAllocStringLen(BSTR * pBSTR, const OLECHAR * pch, UINT uc);
STDAPI_(UINT) ADsStringLen(BSTR bstr);
#ifdef WIN32
STDAPI_(unsigned int) ADsStringByteLen(BSTR bstr);
STDAPI ADsAllocStringByteLen(const char * psz, unsigned int len, BSTR * pBSTR);
#endif
STDAPI_(int) ADsStringCmp(CBSTR bstr1, CBSTR bstr2);
STDAPI_(int) ADsStringNCmp(CBSTR bstr1, CBSTR bstr2, size_t c);
STDAPI_(int) ADsStringICmp(CBSTR bstr1, CBSTR bstr2);
STDAPI_(int) ADsStringNICmp(CBSTR bstr1, CBSTR bstr2, size_t c);
#endif // #ifndef _HXX_FBSTR