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我正在开发一个国际插件,但遇到了 UTF-16 字符串的问题。我正在尝试使用 FB::FactoryBase::GetLoggingMethods 将日志存储到 %APPDATA%。目前它是这样定义的:

void getLoggingMethods(FB::Log::LogMethodList& outMethods) {
  try {
    boost::filesystem::path appDataPath = FB::System::getLocalAppDataPath("AppName");
    boost::filesystem::path logDirPath = appDataPath / "Logs";

    if(!exists(logDirPath)) {
        // create the directory
        boost::filesystem::create_directories(logDirPath);
    }

    if (exists(logDirPath) && is_directory(logDirPath)) {
        boost::filesystem::path logPath = logDirPath / "app_name.log";

    outMethods.push_back(std::make_pair(FB::Log::LogMethod_File, logPath.string()));
        }
    } catch(...) { /* safely fail here */ }
}

当用户的用户名中包含 UTF-16 字符时,就会出现此问题。这会引发异常。

但是,outMethods.push_back需要一个std::stringfor 输入。转换 fromstd::wstringstd::string丢失 UTF-16 字符(这会使路径无效。)

有任何想法吗?

编辑:通过为 boost::filesystem::path 为其构造函数提供一个 LPCWSTR 来设法使其工作。

boost::filesystem::path appDataPath = 
    FB::utf8_to_wstring(FB::System::getLocalAppDataPath("AppName")).c_str();

boost::filesystem::path logDirPath = appDataPath / "Logs";

if(!exists(logDirPath)) {
     // create the directory
     boost::filesystem::create_directories(logDirPath);
}

if (exists(logDirPath) && is_directory(logDirPath)) {
    boost::filesystem::path logPath = logDirPath / "app_name.log";

    outMethods.push_back(
         std::make_pair(
             FB::Log::LogMethod_File, FB::wstring_to_utf8(logPath.wstring())
         )
    );
 }
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