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121 lines
2.9 KiB
C++
121 lines
2.9 KiB
C++
#include "encoding.h"
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// For supporting customization with non-ascii characters through Cecko,
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// the encoding of cck.che is changed to UTF8. Widget values are converted
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// to and fro between native encoding and UTF8 encoding. That is, the
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// native text entered in the wizard are saved to in-memory copy as UTF8,
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// and when displayed in the wizard they are converted back to native
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// encoding.
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// For customizing the Windows system text strings like program folder
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// name, additional components and CD autorun strings, encoding is
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// changed from UTF8 back to native encoding.
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// Convert native encoding to UTF8 encoding
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__declspec(dllexport)
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CString ConvertANSItoUTF8(CString strAnsi)
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{
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int wLen, mLen, retval;
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CString strUtf8;
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wLen = MultiByteToWideChar(CP_ACP, 0, strAnsi, -1, NULL, 0);
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if (wLen == 0)
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{
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ShowLastError();
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return strAnsi;
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}
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LPWSTR strWidechar = new WCHAR[wLen];
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retval = MultiByteToWideChar(CP_ACP, 0, strAnsi, -1, strWidechar, wLen);
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if (retval == 0)
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{
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ShowLastError();
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delete [] strWidechar;
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return strAnsi;
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}
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mLen = WideCharToMultiByte(CP_UTF8, 0, strWidechar, -1, NULL, 0, NULL, NULL);
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if (mLen == 0)
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{
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ShowLastError();
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delete [] strWidechar;
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return strAnsi;
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}
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LPSTR strMultibyte = new TCHAR[mLen];
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retval = WideCharToMultiByte(CP_UTF8, 0, strWidechar, -1, strMultibyte,
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mLen, NULL, NULL);
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if (retval == 0)
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{
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ShowLastError();
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delete [] strWidechar;
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delete [] strMultibyte;
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return strAnsi;
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}
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strUtf8 = strMultibyte;
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delete [] strWidechar;
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delete [] strMultibyte;
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return strUtf8;
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}
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// Convert UTF8 encoding to native encoding
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__declspec(dllexport)
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CString ConvertUTF8toANSI(CString strUtf8)
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{
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int wLen, mLen, retval;
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CString strAnsi;
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wLen = MultiByteToWideChar(CP_UTF8, 0, strUtf8, -1, NULL, 0);
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if (wLen == 0)
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{
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ShowLastError();
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return strUtf8;
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}
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LPWSTR strWidechar = new WCHAR[wLen];
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retval = MultiByteToWideChar(CP_UTF8, 0, strUtf8, -1, strWidechar, wLen);
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if (retval == 0)
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{
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ShowLastError();
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delete [] strWidechar;
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return strUtf8;
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}
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mLen = WideCharToMultiByte(CP_ACP, 0, strWidechar, -1, NULL, 0, NULL, NULL);
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if (mLen == 0)
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{
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ShowLastError();
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delete [] strWidechar;
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return strUtf8;
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}
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LPSTR strMultibyte = new TCHAR[mLen];
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retval = WideCharToMultiByte(CP_ACP, 0, strWidechar, -1, strMultibyte,
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mLen, NULL, NULL);
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if (retval == 0)
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{
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ShowLastError();
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delete [] strWidechar;
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delete [] strMultibyte;
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return strUtf8;
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}
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strAnsi = strMultibyte;
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delete [] strWidechar;
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delete [] strMultibyte;
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return strAnsi;
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}
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// Display error message
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extern "C" __declspec(dllexport)
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void ShowLastError()
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{
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char* lpMsgBuf;
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FormatMessage(
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FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
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NULL,
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GetLastError(),
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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(LPTSTR) &lpMsgBuf,
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0,
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NULL);
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MessageBox( NULL, lpMsgBuf, "Error", MB_OK|MB_ICONINFORMATION );
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LocalFree(lpMsgBuf);
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}
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