556 lines
12 KiB
C
556 lines
12 KiB
C
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/*
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* MLANG wrapper functions
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* Copyright (C) 2000 Microsoft Corporation
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*/
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#include "precomp.h"
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#include "mlang.h"
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#include "oleauto.h"
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#define CP_USERDEF 50000
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#define CP_ISCII_MIN 57002
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#define CP_ISCII_MAC 57011
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#define IsISCII(cp) (((cp) >= CP_ISCII_MIN) && ((cp) <= CP_ISCII_MAC))
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BOOL fInitializedCom;
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IMultiLanguage3 *pml3;
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BOOL FLoadMlang()
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{
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HRESULT hr;
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if (!fInitializedCom)
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{
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hr = CoInitialize(NULL);
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if (FAILED(hr))
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{
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return(FALSE);
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}
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fInitializedCom = TRUE;
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}
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if (pml3 == NULL)
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{
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hr = CoCreateInstance(&CLSID_CMultiLanguage,
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NULL,
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CLSCTX_INPROC_SERVER,
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&IID_IMultiLanguage3,
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(void **) &pml3);
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if (FAILED(hr))
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{
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return(FALSE);
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}
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}
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return(TRUE);
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}
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BOOL FValidWin32CodePage(UINT cp)
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{
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switch (cp)
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{
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case 50220 :
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case 50221 :
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case 50222 :
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case 50225 :
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case 50227 :
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// case 50229 :
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case 52936 :
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// We don't use WCToMB or MBToWC for these because there are
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// bugs in C_IS2022.DLL and MLANG has built support.
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return(FALSE);
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}
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return(IsValidCodePage(cp));
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}
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ConvertFromUnicodeMlang(UINT cp, BOOL fNoBestFit, BOOL fWriteEntities, LPCWSTR rgchUtf16, UINT cchUtf16, LPSTR rgchMbcs, UINT cchMbcs, BOOL* pfDefCharUsed)
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{
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DWORD dwMode;
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UINT cchSrc;
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UINT cchDst;
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DWORD dwFlags;
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HRESULT hr;
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if (!FLoadMlang())
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{
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return(0);
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}
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dwMode = 0;
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cchSrc = cchUtf16;
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cchDst = cchMbcs;
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dwFlags = fWriteEntities ? MLCONVCHARF_NCR_ENTITIZE : MLCONVCHARF_USEDEFCHAR;
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if (fNoBestFit)
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{
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dwFlags |= MLCONVCHARF_NOBESTFITCHARS;
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}
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hr = pml3->lpVtbl->ConvertStringFromUnicodeEx(pml3,
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&dwMode,
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cp,
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(WCHAR *) rgchUtf16,
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&cchSrc,
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rgchMbcs,
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&cchDst,
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dwFlags,
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NULL);
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if (FAILED(hr))
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{
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return(0);
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}
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if (pfDefCharUsed != NULL)
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{
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*pfDefCharUsed = (hr == S_FALSE);
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}
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return(cchDst);
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}
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UINT ConvertFromUnicode(UINT cp, BOOL fNoBestFit, BOOL fWriteEntities, LPCWSTR rgchUtf16, UINT cchUtf16, LPSTR rgchMbcs, UINT cchMbcs, BOOL* pfDefCharUsed)
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{
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UINT cch;
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if (cchUtf16 == 0)
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{
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return(0);
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}
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if (!fWriteEntities && FValidWin32CodePage(cp))
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{
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cch = WideCharToMultiByte(cp,
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fNoBestFit ? WC_NO_BEST_FIT_CHARS : 0,
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rgchUtf16,
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cchUtf16,
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rgchMbcs,
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cchMbcs,
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NULL,
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pfDefCharUsed);
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if (cch != 0)
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{
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return(cch);
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}
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// We retry with MLANG even when WCToMB supports the code page
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// because there are code pages when WCToMB may not support all
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// the features of the API. I know this is the case for WCToMB
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// and the ISCII encodings. We try again just for robustness.
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}
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cch = ConvertFromUnicodeMlang(cp, fNoBestFit, fWriteEntities, rgchUtf16, cchUtf16, rgchMbcs, cchMbcs, pfDefCharUsed);
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#if DBG
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if (cch == 0)
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{
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DebugBreak();
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}
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#endif
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return(cch);
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}
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UINT ConvertToUnicodeMlang(UINT cp, LPCSTR rgchMbcs, UINT cchMbcs, LPWSTR rgchUtf16, UINT cchUtf16)
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{
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DWORD dwMode;
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UINT cchSrc;
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UINT cchDst;
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HRESULT hr;
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if (!FLoadMlang())
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{
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return(0);
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}
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dwMode = 0;
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cchSrc = cchMbcs;
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cchDst = cchUtf16;
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hr = pml3->lpVtbl->ConvertStringToUnicode(pml3,
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&dwMode,
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cp,
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(CHAR *) rgchMbcs,
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&cchSrc,
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rgchUtf16,
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&cchDst);
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if (FAILED(hr))
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{
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return(0);
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}
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return(cchDst);
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}
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UINT ConvertToUnicode(UINT cp, LPCSTR rgchMbcs, UINT cchMbcs, LPWSTR rgchUtf16, UINT cchUtf16)
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{
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UINT cch;
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if (cchMbcs == 0)
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{
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return(0);
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}
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if (FValidWin32CodePage(cp))
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{
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cch = MultiByteToWideChar(cp, 0, rgchMbcs, cchMbcs, rgchUtf16, cchUtf16);
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if (cch != 0)
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{
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return(cch);
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}
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// We retry with MLANG even when MBToWC supports the code page
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// because there are code pages when MBToWC may not support all
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// the features of the API. I know this is the case for WCToMB
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// and the ISCII encodings. We try again just for robustness.
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}
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cch = ConvertToUnicodeMlang(cp, rgchMbcs, cchMbcs, rgchUtf16, cchUtf16);
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#if DBG
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if (cch == 0)
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{
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DebugBreak();
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}
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#endif
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return(cch);
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}
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BOOL FDetectEncodingA(LPCSTR rgch, UINT cch, UINT* pcp)
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{
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INT cb;
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DetectEncodingInfo dei;
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INT cdei;
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HRESULT hr;
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if (!FLoadMlang())
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{
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return(0);
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}
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cb = (INT) cch;
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cdei = 1;
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hr = pml3->lpVtbl->DetectInputCodepage(pml3,
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0,
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0,
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(LPSTR) rgch,
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&cb,
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&dei,
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&cdei);
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if (hr != S_OK)
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{
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return(FALSE);
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}
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if (cdei == 0)
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{
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return(FALSE);
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}
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*pcp = dei.nCodePage;
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return(TRUE);
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}
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BOOL FLookupCodepageNameW(LPCWSTR rgchEncoding, UINT cch, UINT* pcp)
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{
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BSTR bstrEncoding;
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MIMECSETINFO mci;
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HRESULT hr;
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if (cch == 0)
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{
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return(FALSE);
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}
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if (rgchEncoding[0] == L'_')
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{
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// Don't allow internal MLANG encodings
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return(FALSE);
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}
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if (!FLoadMlang())
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{
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return(FALSE);
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}
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bstrEncoding = SysAllocStringLen(rgchEncoding, cch);
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if (bstrEncoding == NULL)
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{
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return(FALSE);
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}
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hr = pml3->lpVtbl->GetCharsetInfo(pml3, bstrEncoding, &mci);
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SysFreeString(bstrEncoding);
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*pcp = mci.uiInternetEncoding;
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if (SUCCEEDED(hr))
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{
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return(TRUE);
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}
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return(FALSE);
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}
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BOOL FLookupCodepageNameA(LPCSTR rgchEncoding, UINT cch, UINT* pcp)
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{
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WCHAR rgwchEncoding[MAX_MIMECSET_NAME];
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UINT ich;
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if (cch > MAX_MIMECSET_NAME)
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{
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return(FALSE);
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}
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for (ich = 0; ich < cch; ich++)
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{
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// Assume input is ASCII or Latin-1 and zero extend each character
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rgwchEncoding[ich] = (WCHAR) (BYTE) rgchEncoding[ich];
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}
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return(FLookupCodepageNameW(rgwchEncoding, cch, pcp));
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}
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BOOL FSupportWriteEntities(UINT cp)
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{
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if (IsISCII(cp))
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{
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return(FALSE);
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}
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return(TRUE);
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}
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BOOL FValidateCodepage(HWND hwnd, UINT cp)
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{
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HRESULT hr;
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if (IsValidCodePage(cp))
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{
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return(TRUE);
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}
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if ((cp == CP_USERDEF) || (cp == CP_AUTO) || (cp == CP_MACCP) || (cp == CP_THREAD_ACP))
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{
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return(FALSE);
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}
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if (!FLoadMlang())
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{
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return(FALSE);
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}
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hr = pml3->lpVtbl->ValidateCodePage(pml3, cp, hwnd);
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if (SUCCEEDED(hr) && (hr != S_FALSE))
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{
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return(TRUE);
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}
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return(FALSE);
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}
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void PopulateCodePages(HWND hWnd, BOOL fSelectEncoding, UINT cpSelect, UINT cpExtra)
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{
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IEnumCodePage *pecp;
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UINT msg_ADDSTRING;
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UINT msg_SETITEMDATA;
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UINT msg_GETCOUNT;
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UINT msg_GETITEMDATA;
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UINT msg_SETCURSEL;
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HRESULT hr;
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LRESULT lr;
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if (!FLoadMlang())
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{
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return;
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}
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hr = pml3->lpVtbl->EnumCodePages(pml3,
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MIMECONTF_VALID_NLS | MIMECONTF_EXPORT,
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GetUserDefaultUILanguage(),
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&pecp);
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if (FAILED(hr))
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{
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return;
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}
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msg_ADDSTRING = fSelectEncoding ? LB_ADDSTRING : CB_ADDSTRING;
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msg_SETITEMDATA = fSelectEncoding ? LB_SETITEMDATA : CB_SETITEMDATA;
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msg_GETCOUNT = fSelectEncoding ? LB_GETCOUNT : CB_GETCOUNT;
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msg_GETITEMDATA = fSelectEncoding ? LB_GETITEMDATA : CB_GETITEMDATA;
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msg_SETCURSEL = fSelectEncoding ? LB_SETCURSEL : CB_SETCURSEL;
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for (;;)
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{
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MIMECPINFO mci;
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ULONG c;
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hr = pecp->lpVtbl->Next(pecp, 1, &mci, &c);
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if (FAILED(hr))
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{
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break;
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}
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if (c == 0)
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{
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break;
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}
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|
|
||
|
|
if (mci.uiCodePage == CP_USERDEF)
|
||
|
|
{
|
||
|
|
// Ignore "User Defined"
|
||
|
|
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!fSelectEncoding)
|
||
|
|
{
|
||
|
|
if (mci.uiCodePage == cpSelect)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == cpExtra)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == CP_UTF16)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == 1252)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == CP_UTF8)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == g_cpDefault)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == g_cpANSI)
|
||
|
|
{
|
||
|
|
// Don't filter ANSI codepage used by system
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == g_cpOEM)
|
||
|
|
{
|
||
|
|
// Don't filter OEM codepage used by system
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == g_cpUserLangANSI)
|
||
|
|
{
|
||
|
|
// Don't filter ANSI codepage associated with user's default UI language
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == g_cpUserLangOEM)
|
||
|
|
{
|
||
|
|
// Don't filter OEM codepage associated with user's default UI language
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == g_cpUserLocaleANSI)
|
||
|
|
{
|
||
|
|
// Don't filter ANSI codepage associated with user's default locale
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == g_cpUserLocaleOEM)
|
||
|
|
{
|
||
|
|
// Don't filter OEM codepage associated with user's default locale
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == g_cpKeyboardANSI)
|
||
|
|
{
|
||
|
|
// Don't filter ANSI codepage associated with the current active keyboard
|
||
|
|
}
|
||
|
|
|
||
|
|
else if (mci.uiCodePage == g_cpKeyboardOEM)
|
||
|
|
{
|
||
|
|
// Don't filter OEM codepage associated with the current active keyboard
|
||
|
|
}
|
||
|
|
|
||
|
|
else
|
||
|
|
{
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
lr = SendDlgItemMessage(hWnd, IDC_CODEPAGE, msg_ADDSTRING, 0, (LPARAM) mci.wszDescription);
|
||
|
|
|
||
|
|
if (lr < 0)
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
SendDlgItemMessage(hWnd, IDC_CODEPAGE, msg_SETITEMDATA, (WPARAM) lr, (LPARAM) mci.uiCodePage);
|
||
|
|
}
|
||
|
|
|
||
|
|
pecp->lpVtbl->Release(pecp);
|
||
|
|
|
||
|
|
lr = SendDlgItemMessage(hWnd, IDC_CODEPAGE, msg_GETCOUNT, 0, 0);
|
||
|
|
|
||
|
|
while (--lr >= 0)
|
||
|
|
{
|
||
|
|
UINT cp = (UINT) SendDlgItemMessage(hWnd, IDC_CODEPAGE, msg_GETITEMDATA, (WPARAM) lr, 0);
|
||
|
|
|
||
|
|
if (cp == cpSelect)
|
||
|
|
{
|
||
|
|
SendDlgItemMessage(hWnd, IDC_CODEPAGE, msg_SETCURSEL, (WPARAM) lr, 0);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void UnloadMlang()
|
||
|
|
{
|
||
|
|
if (pml3 != NULL)
|
||
|
|
{
|
||
|
|
pml3->lpVtbl->Release(pml3);
|
||
|
|
|
||
|
|
pml3 = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (fInitializedCom)
|
||
|
|
{
|
||
|
|
CoUninitialize();
|
||
|
|
|
||
|
|
fInitializedCom = FALSE;
|
||
|
|
}
|
||
|
|
}
|