工具类CTools实现字符编码转换和获取当前路径

class CTools
{
public:
    CTools(void);
public:
    ~CTools(void);
public:
    static std::string UNICODE_to_UTF8(const CString& unicodeString);
    static CString UTF8_to_UNICODE(const std::string& utf8_string);
    static std::string ws2s(std::wstring& inputws);
    static std::wstring s2ws(const std::string& s);

    static std::string UNICODE_to_ANSI(const CString& unicodeString);
    static CString ANSI_to_UNICODE(const std::string& utf8_string);

    static std::string GetFullPath(void);
};

CTools::CTools(void)
{
}

CTools::~CTools(void)
{
}

std::string CTools::UNICODE_to_UTF8(const CString& unicodeString)
{
    int stringLength = ::WideCharToMultiByte(CP_UTF8, NULL, unicodeString, (int)wcslen(unicodeString), NULL, 0, NULL, NULL);

    char* buffer = new char[stringLength + 1];
    ::WideCharToMultiByte(CP_UTF8, NULL, unicodeString, (int)wcslen(unicodeString), buffer, stringLength, NULL, NULL);
    buffer[stringLength] = ‘\0‘;

    std::string str = buffer;

    delete[] buffer;

    return str;
}

CString CTools::UTF8_to_UNICODE(const std::string& utf8_string)
{
    int length = (int)utf8_string.size();

    int wcsLen = ::MultiByteToWideChar(CP_UTF8, NULL, utf8_string.c_str(), length, NULL, 0);   
    wchar_t* wszString = new wchar_t[wcsLen + 1];
    ::MultiByteToWideChar(CP_UTF8, NULL, utf8_string.c_str(), length, wszString, wcsLen);
    wszString[wcsLen] = ‘\0‘;
    CString unicodeText(wszString); 
    delete[] wszString;

    return unicodeText;
}

std::string CTools::UNICODE_to_ANSI(const CString& unicodeString)
{
    int stringLength = ::WideCharToMultiByte(CP_ACP, NULL, unicodeString, (int)wcslen(unicodeString), NULL, 0, NULL, NULL);

    char* buffer = new char[stringLength + 1];
    ::WideCharToMultiByte(CP_ACP, NULL, unicodeString, (int)wcslen(unicodeString), buffer, stringLength, NULL, NULL);
    buffer[stringLength] = ‘\0‘;

    std::string str = buffer;

    delete[] buffer;

    return str;
}

CString CTools::ANSI_to_UNICODE(const std::string& utf8_string)
{
    int length = (int)utf8_string.size();

    int wcsLen = ::MultiByteToWideChar(CP_ACP, NULL, utf8_string.c_str(), length, NULL, 0);   
    wchar_t* wszString = new wchar_t[wcsLen + 1];
    ::MultiByteToWideChar(CP_ACP, NULL, utf8_string.c_str(), length, wszString, wcsLen);
    wszString[wcsLen] = ‘\0‘;
    CString unicodeText(wszString); 
    delete[] wszString;

    return unicodeText;
}

std::string CTools::ws2s(std::wstring& inputws)
{
    return UNICODE_to_UTF8(inputws.c_str()); 
}

std::wstring CTools::s2ws(const std::string& s)
{ 
    CString cstr = UTF8_to_UNICODE(s);
    return cstr.GetBuffer(cstr.GetLength());
}

std::string CTools::GetFullPath(void)
 {
     HMODULE h = GetModuleHandle(L"Test.exe");
     wchar_t exeFullPath[MAX_PATH]; // MAX_PATH在API中有定义，为128
     int len=GetModuleFileName(h,
         exeFullPath, //应用程序的全路径存放地址
         MAX_PATH);
     std::wstring wstrpath = exeFullPath;
     std::string strpath = CTools::ws2s(wstrpath);
     size_t nPos;
     nPos=strpath.rfind(‘\\‘);
     return strpath.substr(0,nPos);
 }