// This is a part of the Active Template Library.
// Copyright (C) 1996-1997 Microsoft Corporation
// All rights reserved.
//
// This source code is only intended as a supplement to the
// Active Template Library Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Active Template Library product.

#ifndef __ATLCONV_H__
#define __ATLCONV_H__

#ifndef __cplusplus
	#error ATL requires C++ compilation (use a .cpp suffix)
#endif

#ifndef _INC_MALLOC
#include <malloc.h>
#endif // _INC_MALLOC

#pragma pack(push,8)

// Make sure MFC's afxconv.h hasn't already been loaded to do this
#ifndef USES_CONVERSION

#ifndef MFC_DEBUG
#   define USES_CONVERSION int _convert; _convert
#else
#   define USES_CONVERSION int _convert = 0;
#endif

/////////////////////////////////////////////////////////////////////////////
// Global UNICODE<>ANSI translation helpers
LPWSTR WINAPI AtlA2WHelper(LPWSTR lpw, LPCSTR lpa, int nChars);
LPSTR WINAPI AtlW2AHelper(LPSTR lpa, LPCWSTR lpw, int nChars);

#ifndef ATLA2WHELPER
#define ATLA2WHELPER AtlA2WHelper
#define ATLW2AHELPER AtlW2AHelper
#endif

#define A2W(lpa) (\
	((LPCSTR)lpa == NULL) ? NULL : (\
		_convert = (lstrlenA(lpa)+1),\
		ATLA2WHELPER((LPWSTR) alloca(_convert*2), lpa, _convert)))

#define W2A(lpw) (\
	((LPCWSTR)lpw == NULL) ? NULL : (\
		_convert = (lstrlenW(lpw)+1)*2,\
		ATLW2AHELPER((LPSTR) alloca(_convert), lpw, _convert)))

#define A2CW(lpa) ((LPCWSTR)A2W(lpa))
#define W2CA(lpw) ((LPCSTR)W2A(lpw))

#if defined(_UNICODE)
// in these cases the default (TCHAR) is the same as OLECHAR
	inline size_t ocslen(LPCOLESTR x) { return lstrlenW(x); }
	inline OLECHAR* ocscpy(LPOLESTR dest, LPCOLESTR src) { return lstrcpyW(dest, src); }
	inline LPCOLESTR T2COLE(LPCTSTR lp) { return lp; }
	inline LPCTSTR OLE2CT(LPCOLESTR lp) { return lp; }
	inline LPOLESTR T2OLE(LPTSTR lp) { return lp; }
	inline LPTSTR OLE2T(LPOLESTR lp) { return lp; }
#elif defined(OLE2ANSI)
// in these cases the default (TCHAR) is the same as OLECHAR
	inline size_t ocslen(LPCOLESTR x) { return lstrlen(x); }
	inline OLECHAR* ocscpy(LPOLESTR dest, LPCOLESTR src) { return lstrcpy(dest, src); }
	inline LPCOLESTR T2COLE(LPCTSTR lp) { return lp; }
	inline LPCTSTR OLE2CT(LPCOLESTR lp) { return lp; }
	inline LPOLESTR T2OLE(LPTSTR lp) { return lp; }
	inline LPTSTR OLE2T(LPOLESTR lp) { return lp; }
#else
	inline size_t ocslen(LPCOLESTR x) { return lstrlenW(x); }
	//lstrcpyW doesn't work on Win95, so we do this
	inline OLECHAR* ocscpy(LPOLESTR dest, LPCOLESTR src)
	{return (LPOLESTR) memcpy(dest, src, (lstrlenW(src)+1)*sizeof(WCHAR));}
	//CharNextW doesn't work on Win95 so we use this
	#define T2COLE(lpa) A2CW(lpa)
	#define T2OLE(lpa) A2W(lpa)
	#define OLE2CT(lpo) W2CA(lpo)
	#define OLE2T(lpo) W2A(lpo)
#endif

#ifdef OLE2ANSI
	inline LPOLESTR A2OLE(LPSTR lp) { return lp;}
	inline LPSTR OLE2A(LPOLESTR lp) { return lp;}
	#define W2OLE W2A
	#define OLE2W A2W
	inline LPCOLESTR A2COLE(LPCSTR lp) { return lp;}
	inline LPCSTR OLE2CA(LPCOLESTR lp) { return lp;}
	#define W2COLE W2CA
	#define OLE2CW A2CW
#else
	inline LPOLESTR W2OLE(LPWSTR lp) { return lp; }
	inline LPWSTR OLE2W(LPOLESTR lp) { return lp; }
	#define A2OLE A2W
	#define OLE2A W2A
	inline LPCOLESTR W2COLE(LPCWSTR lp) { return lp; }
	inline LPCWSTR OLE2CW(LPCOLESTR lp) { return lp; }
	#define A2COLE A2CW
	#define OLE2CA W2CA
#endif

#ifdef _UNICODE
	#define T2A W2A
	#define A2T A2W
	inline LPWSTR T2W(LPTSTR lp) { return lp; }
	inline LPTSTR W2T(LPWSTR lp) { return lp; }
	#define T2CA W2CA
	#define A2CT A2CW
	inline LPCWSTR T2CW(LPCTSTR lp) { return lp; }
	inline LPCTSTR W2CT(LPCWSTR lp) { return lp; }
#else
	#define T2W A2W
	#define W2T W2A
	inline LPSTR T2A(LPTSTR lp) { return lp; }
	inline LPTSTR A2T(LPSTR lp) { return lp; }
	#define T2CW A2CW
	#define W2CT W2CA
	inline LPCSTR T2CA(LPCTSTR lp) { return lp; }
	inline LPCTSTR A2CT(LPCSTR lp) { return lp; }
#endif

inline BSTR OLE2BSTR(LPCOLESTR lp) {return ::SysAllocString(lp);}
#if defined(_UNICODE)
// in these cases the default (TCHAR) is the same as OLECHAR
	inline BSTR T2BSTR(LPCTSTR lp) {return ::SysAllocString(lp);}
	inline BSTR A2BSTR(LPCSTR lp) {USES_CONVERSION; return ::SysAllocString(A2COLE(lp));}
	inline BSTR W2BSTR(LPCWSTR lp) {return ::SysAllocString(lp);}
#elif defined(OLE2ANSI)
// in these cases the default (TCHAR) is the same as OLECHAR
	inline BSTR T2BSTR(LPCTSTR lp) {return ::SysAllocString(lp);}
	inline BSTR A2BSTR(LPCSTR lp) {return ::SysAllocString(lp);}
	inline BSTR W2BSTR(LPCWSTR lp) {USES_CONVERSION; return ::SysAllocString(W2COLE(lp));}
#else
	inline BSTR T2BSTR(LPCTSTR lp) {USES_CONVERSION; return ::SysAllocString(T2COLE(lp));}
	inline BSTR A2BSTR(LPCSTR lp) {USES_CONVERSION; return ::SysAllocString(A2COLE(lp));}
	inline BSTR W2BSTR(LPCWSTR lp) {return ::SysAllocString(lp);}
#endif

#ifdef _WINGDI_
/////////////////////////////////////////////////////////////////////////////
// Global UNICODE<>ANSI translation helpers
LPDEVMODEW AtlDevModeA2W(LPDEVMODEW lpDevModeW, LPDEVMODEA lpDevModeA);
LPDEVMODEA AtlDevModeW2A(LPDEVMODEA lpDevModeA, LPDEVMODEW lpDevModeW);
LPTEXTMETRICW AtlTextMetricA2W(LPTEXTMETRICW lptmW, LPTEXTMETRICA pltmA);
LPTEXTMETRICA AtlTextMetricW2A(LPTEXTMETRICA lptmA, LPTEXTMETRICW pltmW);

#ifndef ATLDEVMODEA2W
#define ATLDEVMODEA2W AtlDevModeA2W
#define ATLDEVMODEW2A AtlDevModeW2A
#define ATLTEXTMETRICA2W AtlTextMetricA2W
#define ATLTEXTMETRICW2A AtlTextMetricW2A
#endif

#define DEVMODEW2A(lpw)\
	((lpw == NULL) ? NULL : ATLDEVMODEW2A((LPDEVMODEA)alloca(sizeof(DEVMODEA)+lpw->dmDriverExtra), lpw))
#define DEVMODEA2W(lpa)\
	((lpa == NULL) ? NULL : ATLDEVMODEA2W((LPDEVMODEW)alloca(sizeof(DEVMODEW)+lpa->dmDriverExtra), lpa))
#define TEXTMETRICW2A(lptmw)\
	((lptmw == NULL) ? NULL : ATLTEXTMETRICW2A((LPTEXTMETRICA)alloca(sizeof(TEXTMETRICA)), lptmw))
#define TEXTMETRICA2W(lptma)\
	((lptma == NULL) ? NULL : ATLTEXTMETRICA2W((LPTEXTMETRICW)alloca(sizeof(TEXTMETRICW)), lptma))


#ifdef OLE2ANSI
	#define DEVMODEOLE DEVMODEA
	#define LPDEVMODEOLE LPDEVMODEA
	#define TEXTMETRICOLE TEXTMETRICA
	#define LPTEXTMETRICOLE LPTEXTMETRICA
#else
	#define DEVMODEOLE DEVMODEW
	#define LPDEVMODEOLE LPDEVMODEW
	#define TEXTMETRICOLE TEXTMETRICW
	#define LPTEXTMETRICOLE LPTEXTMETRICW
#endif

#if defined(_UNICODE)
// in these cases the default (TCHAR) is the same as OLECHAR
	inline LPDEVMODEW DEVMODEOLE2T(LPDEVMODEOLE lp) { return lp; }
	inline LPDEVMODEOLE DEVMODET2OLE(LPDEVMODEW lp) { return lp; }
	inline LPTEXTMETRICW TEXTMETRICOLE2T(LPTEXTMETRICOLE lp) { return lp; }
	inline LPTEXTMETRICOLE TEXTMETRICT2OLE(LPTEXTMETRICW lp) { return lp; }
#elif defined(OLE2ANSI)
// in these cases the default (TCHAR) is the same as OLECHAR
	inline LPDEVMODE DEVMODEOLE2T(LPDEVMODEOLE lp) { return lp; }
	inline LPDEVMODEOLE DEVMODET2OLE(LPDEVMODE lp) { return lp; }
	inline LPTEXTMETRIC TEXTMETRICOLE2T(LPTEXTMETRICOLE lp) { return lp; }
	inline LPTEXTMETRICOLE TEXTMETRICT2OLE(LPTEXTMETRIC lp) { return lp; }
#else
	#define DEVMODEOLE2T(lpo) DEVMODEW2A(lpo)
	#define DEVMODET2OLE(lpa) DEVMODEA2W(lpa)
	#define TEXTMETRICOLE2T(lptmw) TEXTMETRICW2A(lptmw)
	#define TEXTMETRICT2OLE(lptma) TEXTMETRICA2W(lptma)
#endif

#endif //_WINGDI_

#else //!USES_CONVERSION

// if USES_CONVERSION already defined (i.e. MFC_VER < 4.21 )
// flip this switch to avoid atlconv.cpp
#define _ATL_NO_CONVERSIONS

#endif //!USES_CONVERSION

// Define these even if MFC already included
#if defined(_UNICODE)
// in these cases the default (TCHAR) is the same as OLECHAR
	inline LPOLESTR CharNextO(LPCOLESTR lp) {return CharNextW(lp);}
#elif defined(OLE2ANSI)
// in these cases the default (TCHAR) is the same as OLECHAR
	inline LPOLESTR CharNextO(LPCOLESTR lp) {return CharNext(lp);}
#else
	inline LPOLESTR CharNextO(LPCOLESTR lp) {return (LPOLESTR)(lp+1);}
#endif

#pragma pack(pop)

#endif // __ATLCONV_H__

/////////////////////////////////////////////////////////////////////////////
