104 lines
3.3 KiB
C++
104 lines
3.3 KiB
C++
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/**********************************************************************/
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/** Microsoft Windows NT **/
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/** Copyright(c) Microsoft Corp., 1997 **/
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/**********************************************************************/
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/*
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aucommon.cxx
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Common routines for ANSI/UNICODE classes.
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FILE HISTORY:
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5/21/97 michth created
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*/
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#include "precomp.hxx"
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#include "aucommon.hxx"
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int
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ConvertMultiByteToUnicode(LPSTR pszSrcAnsiString,
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BUFFER *pbufDstUnicodeString,
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DWORD dwStringLen)
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{
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DBG_ASSERT(pszSrcAnsiString != NULL);
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int iStrLen = -1;
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BOOL bTemp;
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bTemp = pbufDstUnicodeString->Resize((dwStringLen + 1) * sizeof(WCHAR));
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if (bTemp) {
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iStrLen = MultiByteToWideChar(CP_ACP,
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MB_PRECOMPOSED,
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pszSrcAnsiString,
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dwStringLen + 1,
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(LPWSTR)pbufDstUnicodeString->QueryPtr(),
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(int)pbufDstUnicodeString->QuerySize());
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if (iStrLen == 0) {
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DBG_ASSERT(GetLastError() != ERROR_INSUFFICIENT_BUFFER);
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iStrLen = -1;
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}
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else {
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//
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// Don't count '\0'
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//
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iStrLen--;
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}
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}
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return iStrLen;
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}
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int
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ConvertUnicodeToMultiByte(LPWSTR pszSrcUnicodeString,
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BUFFER *pbufDstAnsiString,
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DWORD dwStringLen)
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{
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DBG_ASSERT(pszSrcUnicodeString != NULL);
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BOOL bTemp;
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int iStrLen = 0;
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iStrLen = WideCharToMultiByte(CP_ACP,
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0,
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pszSrcUnicodeString,
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dwStringLen + 1,
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(LPSTR)pbufDstAnsiString->QueryPtr(),
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(int)pbufDstAnsiString->QuerySize(),
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NULL,
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NULL);
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if ((iStrLen == 0) && (GetLastError() == ERROR_INSUFFICIENT_BUFFER)) {
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iStrLen = WideCharToMultiByte(CP_ACP,
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0,
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pszSrcUnicodeString,
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dwStringLen + 1,
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NULL,
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0,
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NULL,
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NULL);
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if (iStrLen != 0) {
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bTemp = pbufDstAnsiString->Resize(iStrLen);
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if (!bTemp) {
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iStrLen = 0;
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}
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else {
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iStrLen = WideCharToMultiByte(CP_ACP,
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0,
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pszSrcUnicodeString,
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dwStringLen + 1,
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(LPSTR)pbufDstAnsiString->QueryPtr(),
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(int)pbufDstAnsiString->QuerySize(),
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NULL,
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NULL);
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}
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}
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}
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//
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// Don't count '\0'
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// and convert 0 to -1 for errors
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//
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iStrLen--;
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return iStrLen;
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}
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