gecko-dev/cck/globals/encoding.cpp
2002-04-05 21:31:22 +00:00

121 lines
2.9 KiB
C++

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