75 lines
2 KiB
C
75 lines
2 KiB
C
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//
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// Wrapper for <atlconv.h> that redirects it to our C-callable
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// helper functions, and also creates the appropriate definitions
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// for C callers so everybody can use the A2W/W2A macros.
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//
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#ifndef _SHCONV_H
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#define _SHCONV_H
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//
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// Force these to EXTERN_C so we can use them from C code, too.
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//
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STDAPI_(LPWSTR) SHA2WHelper(LPWSTR lpw, LPCSTR lpa, int nChars);
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STDAPI_(LPSTR) SHW2AHelper(LPSTR lpa, LPCWSTR lpw, int nChars);
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#define ATLA2WHELPER SHA2WHelper
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#define ATLW2AHELPER SHW2AHelper
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#ifdef __cplusplus
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#ifndef offsetof
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#define offsetof(s,m) ((size_t)&(((s *)0)->m))
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#endif
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#ifndef ATLASSERT
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#define ATLASSERT(f) ASSERT(f)
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#endif
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#include <atlconv.h>
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#else
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#define USES_CONVERSION int _convert = 0
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//
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// This macro assumes that lstrlenW(UNICODE) <= lstrlenA(ANSI)
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//
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#define A2W(lpa) (\
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((LPCSTR)lpa == NULL) ? NULL : (\
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_convert = (lstrlenA(lpa)+1),\
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ATLA2WHELPER((LPWSTR) alloca(_convert*2), (LPCSTR)lpa, _convert)))
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//
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// This macro assumes that lstrlenA(ANSI) <= lstrlenW(UNICODE) * 2
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//
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#define W2A(lpw) (\
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((LPCWSTR)lpw == NULL) ? NULL : (\
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_convert = (lstrlenW(lpw)+1)*2,\
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ATLW2AHELPER((LPSTR) alloca(_convert), lpw, _convert)))
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#define A2CW(lpa) ((LPCWSTR)A2W(lpa))
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#define W2CA(lpw) ((LPCSTR)W2A(lpw))
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#ifdef UNICODE
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#define T2A W2A
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#define A2T A2W
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__inline LPWSTR T2W(LPTSTR lp) { return lp; }
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__inline LPTSTR W2T(LPWSTR lp) { return lp; }
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#define T2CA W2CA
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#define A2CT A2CW
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__inline LPCWSTR T2CW(LPCTSTR lp) { return lp; }
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__inline LPCTSTR W2CT(LPCWSTR lp) { return lp; }
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#else
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#define T2W A2W
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#define W2T W2A
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__inline LPSTR T2A(LPTSTR lp) { return lp; }
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__inline LPTSTR A2T(LPSTR lp) { return lp; }
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#define T2CW A2CW
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#define W2CT W2CA
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__inline LPCSTR T2CA(LPCTSTR lp) { return lp; }
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__inline LPCTSTR A2CT(LPCSTR lp) { return lp; }
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#endif
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#include <crt/malloc.h> // Get definition for alloca()
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#endif // !C++
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#endif // _SHCONV_H
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