Conversion from string to wstring is causing ú to lose encoding
The variable filepath
which is a string
contains the value Música
. I have the following code:
wstring 开发者_Go百科fp(filepath.length(), L' ');
copy(filepath.begin(), filepath.end(), fp.begin());
fp
then contains the value M?sica
. How do I convert filepath
to fp
without losing the encoding for the ú character?
Use the function MultiByteToWideChar.
Sample code:
std::string toStdString(const std::wstring& s, UINT32 codePage)
{
unsigned int bufferSize = (unsigned int)s.length()+1;
char* pBuffer = new char[bufferSize];
memset(pBuffer, 0, bufferSize);
WideCharToMultiByte(codePage, 0, s.c_str(), (int)s.length(), pBuffer, bufferSize, NULL, NULL);
std::string retVal = pBuffer;
delete[] pBuffer;
return retVal;
}
std::wstring toStdWString(const std::string& s, UINT32 codePage)
{
unsigned int bufferSize = (unsigned int)s.length()+1;
WCHAR* pBuffer = new WCHAR[bufferSize];
memset(pBuffer, 0, bufferSize*sizeof(WCHAR));
MultiByteToWideChar(codePage, 0, s.c_str(), (int)s.length(), pBuffer, bufferSize);
std::wstring retVal = pBuffer;
delete[] pBuffer;
return retVal;
}
Since you are using MFC, you have access to the ATL String Conversion Macros.
This greatly simplifies the conversion vs. using MultiByteToWideChar
. Assuming that filepath
is encoded in your system's default code page, this should do the trick:
CA2W wideFilepath(filepath.c_str());
wstring fp(static_cast<const wchar_t*>(wideFilepath));
If filepath
is not in your system's default code page (let's say it's in UTF-8), then you can specify the encoding to convert from:
CA2W wideFilepath(filepath.c_str(), CP_UTF8);
wstring fp(static_cast<const wchar_t*>(wideFilepath));
To convert the other way, from std::wstring
to std::string
, you would do this:
// Convert from wide (UTF-16) to UTF-8
CW2A utf8Filepath(fp.c_str(), CP_UTF8);
string utf8Fp(static_cast<const char*>(utf8Filepath));
// Or, convert from wide (UTF-16) to your system's default code page.
CW2A narrowFilepath(fp.c_str(), CP_UTF8);
string narrowFp(static_cast<const char*>(narrowFilepath));
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