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/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: macros.h,v $
 *
 *  $Revision: 1.5 $
 *
 *  last change: $Author: rt $ $Date: 2005-09-08 16:25:53 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

#define _UWINAPI_
#include <systools/win32/uwinapi.h>

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

#ifndef _INC_TCHAR
#   ifdef UNICODE
#       define _UNICODE
#   endif
#   include <TCHAR.H>
#endif


/* Version macros */

#define MAKE_VER_WIN32( major, minor, build, isWindows ) \
((DWORD)MAKELONG( MAKEWORD( major, minor ), (build) | ( isWindows ? 0x8000 : 0 ) ))

#define MAKE_VER_WIN32_NT( major, minor, build ) \
    MAKE_VER_WIN32( major, minor, build, FALSE )

#define MAKE_VER_WIN32_WINDOWS( major, minor, build ) \
    MAKE_VER_WIN32( major, minor, build, TRUE )

#define VER_WIN32_WINDOWS_95    MAKE_VER_WIN32_WINDOWS( 4, 0, 0 )
#define VER_WIN32_WINDOWS_98    MAKE_VER_WIN32_WINDOWS( 4, 10, 0 )
#define VER_WIN32_WINDOWS_ME    MAKE_VER_WIN32_WINDOWS( 4, 90, 0 )
#define VER_WIN32_NT_NT4        MAKE_VER_WIN32_NT( 4, 0, 0 )
#define VER_WIN32_NT_2000       MAKE_VER_WIN32_NT( 5, 0, 0 )
#define VER_WIN32_NT_XP         MAKE_VER_WIN32_NT( 5, 1, 0 )


#ifdef __cplusplus

#define _AUTO_WSTR2STR( lpStrA, lpStrW ) \
LPSTR   lpStrA; \
if ( lpStrW ) \
{ \
    int cNeeded = WideCharToMultiByte( CP_ACP, 0, lpStrW, -1, NULL, 0, NULL, NULL ); \
    lpStrA = (LPSTR)_alloca( cNeeded * sizeof(CHAR) ); \
    WideCharToMultiByte( CP_ACP, 0, lpStrW, -1, lpStrA, cNeeded, NULL, NULL ); \
} \
else \
    lpStrA = NULL;


#define AUTO_WSTR2STR( lpStr ) \
    _AUTO_WSTR2STR( lpStr##A, lpStr##W )

#define AUTO_STR( lpStr, cchBuffer ) \
LPSTR   lpStr##A = lpStr##W ? (LPSTR)_alloca( (cchBuffer) * sizeof(CHAR) ) : NULL;

#endif  /* __cplusplus */


#define STRBUF2WSTR( lpStr, cchSrcBuffer, cchDestBuffer ) \
    MultiByteToWideChar( CP_ACP, 0, lpStr##A, cchSrcBuffer, lpStr##W, cchDestBuffer )

#define STR2WSTR( lpStr, cchBuffer ) \
    STRBUF2WSTR( lpStr, -1, cchBuffer )

#define WSTR2STR( lpStr, cchBuffer ) \
    WideCharToMultiByte( CP_ACP, 0, lpStr##W, -1, lpStr##A, cchBuffer, NULL, NULL )

EXTERN_C void WINAPI ResolveThunk_WINDOWS( FARPROC *lppfn, LPCSTR lpLibFileName, LPCSTR lpFuncName, FARPROC lpfnEmulate, FARPROC lpfnFailure );
EXTERN_C void WINAPI ResolveThunk_TRYLOAD( FARPROC *lppfn, LPCSTR lpLibFileName, LPCSTR lpFuncName, FARPROC lpfnEmulate, FARPROC lpfnFailure );
EXTERN_C void WINAPI ResolveThunk_ALLWAYS( FARPROC *lppfn, LPCSTR lpLibFileName, LPCSTR lpFuncName, FARPROC lpfnEmulate, FARPROC lpfnFailure );




#define IMPLEMENT_THUNK( module, resolve, rettype, calltype, func, params ) \
EXTERN_C _declspec( dllexport ) FARPROC module##_##func##_Ptr; \
EXTERN_C rettype calltype func##_##resolve params; \
static rettype calltype func##_##Failure params; \
static _declspec ( naked ) void func##_Thunk() \
{ \
    ResolveThunk_##resolve( &module##_##func##_Ptr, #module ".dll", #func, (FARPROC)func##_##resolve, (FARPROC)func##_##Failure ); \
    _asm    jmp [module##_##func##_Ptr] \
} \
EXTERN_C _declspec( naked ) rettype calltype func params \
{ \
    _asm    jmp [module##_##func##_Ptr] \
} \
EXTERN_C _declspec( dllexport ) FARPROC module##_##func##_Ptr = (FARPROC)func##_Thunk; \
static rettype calltype func##_##Failure params \
{ \
    SetLastError( ERROR_CALL_NOT_IMPLEMENTED ); \
    return (rettype)0; \
} \
EXTERN_C rettype calltype func##_##resolve params



#define DEFINE_CUSTOM_THUNK( module, resolve, rettype, calltype, func, params ) \
EXTERN_C _declspec( dllexport ) FARPROC module##_##func##_Ptr; \
static _declspec ( naked ) void func##_Thunk() \
{ \
    ResolveThunk_##resolve( &module##_##func##_Ptr, #module ".dll", #func ); \
    _asm    jmp [module##_##func##_Ptr] \
} \
EXTERN_C _declspec( naked ) rettype calltype func params \
{ \
    _asm    jmp [module##_##func##_Ptr] \
} \
EXTERN_C _declspec( dllexport ) FARPROC module##_##func##_Ptr = (FARPROC)func##_Thunk;



#define DEFINE_DEFAULT_THUNK( module, resolve, rettype, calltype, func, params ) \
EXTERN_C _declspec( dllexport ) FARPROC module##_##func##_Ptr; \
static rettype calltype func##_##Failure params; \
static _declspec ( naked ) void func##_Thunk() \
{ \
    ResolveThunk_##resolve( &module##_##func##_Ptr, #module ".dll", #func, NULL, (FARPROC)func##_##Failure ); \
    _asm    jmp [module##_##func##_Ptr] \
} \
EXTERN_C _declspec( naked ) rettype calltype func params \
{ \
    _asm    jmp [module##_##func##_Ptr] \
} \
EXTERN_C _declspec( dllexport ) FARPROC module##_##func##_Ptr = (FARPROC)func##_Thunk; \
static rettype calltype func##_##Failure params \
{ \
    SetLastError( ERROR_CALL_NOT_IMPLEMENTED ); \
    return (rettype)0; \
}