140 lines
3.4 KiB
C++
140 lines
3.4 KiB
C++
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#include <pch.hxx>
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#include "mimeole.h" //for CP_UNICODE
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#include "mlang.h"
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#include "demand.h"
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#include <BadStrFunctions.h>
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HRESULT HrLPSZCPToBSTR(UINT cp, LPCSTR lpsz, BSTR *pbstr)
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{
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HRESULT hr = NOERROR;
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BSTR bstr=0;
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UINT cchSrc = 0;
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UINT cchDest = 0;
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IMultiLanguage *pMLang = NULL;
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IMLangConvertCharset *pMLangConv = NULL;
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if (!cp)
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cp = GetACP();
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if ((cp == CP_UTF8) && (lpsz[0] == 0xEF) && (lpsz[1] == 0xBB) && (lpsz[2] == 0xBF))
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lpsz += 3; // Skip BOM
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IF_FAILEXIT(hr = CoCreateInstance(CLSID_CMultiLanguage, NULL, CLSCTX_INPROC_SERVER, IID_IMultiLanguage, (void**)&pMLang));
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IF_FAILEXIT(hr = pMLang->CreateConvertCharset(cp, CP_UNICODE, NULL, &pMLangConv));
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// get byte count
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cchDest = cchSrc = lstrlen(lpsz) + 1;
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// allocate a wide-string with enough character to hold string - use character count
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IF_NULLEXIT(bstr=SysAllocStringLen(NULL, cchSrc));
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hr = pMLangConv->DoConversionToUnicode((CHAR*)lpsz, &cchSrc, (WCHAR*)bstr, &cchDest);
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*pbstr = bstr;
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bstr=0; // freed by caller
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exit:
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if(bstr)
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SysFreeString(bstr);
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ReleaseObj(pMLangConv);
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ReleaseObj(pMLang);
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return hr;
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}
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HRESULT HrLPSZToBSTR(LPCSTR lpsz, BSTR *pbstr)
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{
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// GetACP so that it works on non-US platform
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return HrLPSZCPToBSTR(GetACP(), lpsz, pbstr);
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}
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HRESULT HrIStreamToBSTR(UINT cp, LPSTREAM pstm, BSTR *pbstr)
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{
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HRESULT hr;
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ULONG cb;
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LPSTR lpsz=0;
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BOOL fLittleEndian = FALSE;
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if (CP_UNICODE == cp || (S_OK == HrIsStreamUnicode(pstm, &fLittleEndian)))
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return(HrIStreamWToBSTR(pstm, pbstr));
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hr=HrGetStreamSize(pstm, &cb);
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if (FAILED(hr))
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goto error;
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if (cb==0)
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{
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hr = E_FAIL;
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goto error;
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}
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HrRewindStream(pstm);
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if (!MemAlloc((LPVOID *)&lpsz, cb+1))
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{
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hr = E_OUTOFMEMORY;
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goto error;
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}
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hr = pstm->Read(lpsz, cb, &cb);
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if (FAILED(hr))
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goto error;
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lpsz[cb]=0;
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hr = HrLPSZCPToBSTR(cp,lpsz, pbstr);
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if (FAILED(hr))
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goto error;
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error:
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MemFree(lpsz);
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return hr;
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}
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HRESULT HrIStreamWToBSTR(LPSTREAM pstm, BSTR *pbstr)
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{
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ULONG cb,
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cbTest,
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cch;
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BSTR bstr;
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HRESULT hr = E_FAIL;
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if (pstm == NULL || pbstr == NULL)
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return E_INVALIDARG;
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*pbstr = 0;
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if (SUCCEEDED(HrGetStreamSize(pstm, &cb)) && cb)
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{
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cch = cb / sizeof(WCHAR);
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HrRewindStream(pstm);
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bstr=SysAllocStringLen(NULL, cch);
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if(bstr)
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{
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// Raid 60259 - OE: Cannot successfully insert text file in Unicode (UCS-2)
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hr = pstm->Read(bstr, sizeof(WCHAR), &cbTest);
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if (SUCCEEDED(hr) && (sizeof(WCHAR) == cbTest) && (bstr[0] != 0xfeff))
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HrRewindStream(pstm);
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hr = pstm->Read(bstr, cb, &cb);
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if (SUCCEEDED(hr))
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{
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Assert (cb/sizeof(WCHAR) <= cch);
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bstr[cb/sizeof(WCHAR)]=0;
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*pbstr = bstr;
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}
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}
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}
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return hr;
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}
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HRESULT HrBSTRToLPSZ(UINT cp, BSTR bstr, LPSTR *ppszOut)
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{
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Assert (bstr && ppszOut);
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*ppszOut = PszToANSI(cp, bstr);
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return *ppszOut ? S_OK : E_OUTOFMEMORY;
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}
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