Leaked source code of windows server 2003
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74 lines
2.1 KiB

//
// Wrapper for <atlconv.h> that redirects it to our C-callable
// helper functions, and also creates the appropriate definitions
// for C callers so everybody can use the A2W/W2A macros.
//
#ifndef _SHCONV_H
#define _SHCONV_H
//
// Force these to EXTERN_C so we can use them from C code, too.
//
STDAPI_(LPWSTR) SHA2WHelper(LPWSTR lpw, LPCSTR lpa, int nChars);
STDAPI_(LPSTR) SHW2AHelper(LPSTR lpa, LPCWSTR lpw, int nChars);
#define ATLA2WHELPER SHA2WHelper
#define ATLW2AHELPER SHW2AHelper
#ifdef __cplusplus
#ifndef offsetof
#define offsetof(s,m) ((size_t)&(((s *)0)->m))
#endif
#ifndef ATLASSERT
#define ATLASSERT(f) ASSERT(f)
#endif
#include <atlconv.h>
#else
#define USES_CONVERSION int _convert = 0
//
// This macro assumes that lstrlenW(UNICODE) <= lstrlenA(ANSI)
//
#define A2W(lpa) (\
((LPCSTR)lpa == NULL) ? NULL : (\
_convert = (lstrlenA(lpa)+1),\
ATLA2WHELPER((LPWSTR) alloca(_convert*2), (LPCSTR)lpa, _convert)))
//
// This macro assumes that lstrlenA(ANSI) <= lstrlenW(UNICODE) * 2
//
#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))
#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
#include <crt/malloc.h> // Get definition for alloca()
#endif // !C++
#endif // _SHCONV_H