Windows字符编码

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标准编解码函数

编码，当前默认编码转Utf-8

bool CodeToUtf8(const std::string &sSrc, std::string &sDst)
{
　　int iNeed = MultiByteToWideChar(CP_ACP, 0, sSrc.c_str(), -1, NULL, 0);
　　if(0 == iNeed)
　　{
　　　　WriteToLog("util::CodeToUtf8: MultiByteToWideChar == 0, ErrorCode=%d, sSrc=%s", GetLastError(), sSrc.c_str());
　　　　return false;
　　}
　　std::wstring sWstr(iNeed, 0);
　　MultiByteToWideChar(CP_ACP, 0, sSrc.c_str(), -1, &sWstr[0], sWstr.size());

　　iNeed = WideCharToMultiByte(CP_UTF8, 0, sWstr.c_str(), -1, NULL, 0, NULL, NULL);
　　if(0 == iNeed)
　　{
　　　　WriteToLog("util::CodeToUtf8: WideCharToMultiByte == 0, ErrorCode=%d", GetLastError());
　　　　return false;
　　}
　　sDst.resize(iNeed, 0);
　　WideCharToMultiByte(CP_UTF8, 0, sWstr.c_str(), -1, &sDst[0], sDst.size(), NULL, NULL);
　　return true;
}

bool CodeToUtf8(const std::string &sSrc, std::string &sDst)
{
    int iNeed = MultiByteToWideChar(CP_ACP, 0, sSrc.c_str(), -1, NULL, 0);
    if(0 == iNeed)
    {
        WriteToLog("util::CodeToUtf8: MultiByteToWideChar == 0, ErrorCode=%d, sSrc=%s", GetLastError(), sSrc.c_str());
        return false;
    }
    std::wstring sWstr(iNeed, 0);
    MultiByteToWideChar(CP_ACP, 0, sSrc.c_str(), -1, &sWstr[0], sWstr.size());

    iNeed = WideCharToMultiByte(CP_UTF8, 0, sWstr.c_str(), -1, NULL, 0, NULL, NULL);
    if(0 == iNeed)
    {
        WriteToLog("util::CodeToUtf8: WideCharToMultiByte == 0, ErrorCode=%d", GetLastError());
        return false;
    }
    sDst.resize(iNeed, 0);
    WideCharToMultiByte(CP_UTF8, 0, sWstr.c_str(), -1, &sDst[0], sDst.size(), NULL, NULL);
    return true;
}

解码，Utf-8转当前默认编码

bool DecodeFromUtf8(const std::string &sSrc, std::string &sDst)
{
    int iNeed = MultiByteToWideChar(CP_UTF8, 0, sSrc.c_str(), -1, NULL, 0);
    if(0 == iNeed)
    {
        WriteToLog("util::DecodeFromUtf8: MultiByteToWideChar == 0, ErrorCode=%d, sSrc=%s", GetLastError(), sSrc.c_str());
        return false;
    }
    std::wstring sWstr(iNeed, 0);
    MultiByteToWideChar(CP_UTF8, 0, sSrc.c_str(), -1, &sWstr[0], sWstr.size());

    iNeed = WideCharToMultiByte(CP_ACP, 0, sWstr.c_str(), -1, NULL, 0, NULL, NULL);
    if(0 == iNeed)
    {
        WriteToLog("util::DecodeFromUtf8: WideCharToMultiByte == 0, ErrorCode=%d", GetLastError());
        return false;
    }
    sDst.resize(iNeed, 0);
    WideCharToMultiByte(CP_ACP, 0, sWstr.c_str(), -1, &sDst[0], sDst.size(), NULL, NULL);
    return true;
}

Windows字符编码

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原文地址：http://www.cnblogs.com/chaikefusibushiji/p/4334586.html