Method lazyInit

core/base/UserDefault.cpp:371–460

}

void UserDefault::lazyInit()
{
    if (_initialized)
        return;

#if !USER_DEFAULT_PLAIN_MODE
    _filePath = FileUtils::getInstance()->getNativeWritableAbsolutePath() + _userDefaultFileName;

    // construct file mapping
    if (!_fileStream.open(_filePath, IFileStream::Mode::OVERLAPPED))
    {
        AXLOGW("UserDefault::init open storage file '{}' failed!", _filePath);
        return;
    }

    int filesize = static_cast<int>(_fileStream.size());

    if (filesize < _curMapSize)
    {  // construct a empty file mapping
        if (!_fileStream.resize(_curMapSize))
        {
            AXLOGW("UserDefault::init failed to truncate '{}'.", _filePath);
            return;
        }
        _rwmmap = std::make_shared<mio::mmap_sink>(_fileStream.nativeHandle(), 0, _curMapSize);
    }
    else
    {  /// load to memory _values
        _rwmmap = std::make_shared<mio::mmap_sink>(_fileStream.nativeHandle(), 0, mio::map_entire_file);
        if (_rwmmap->is_mapped())
        {  // no error
            yasio::ibstream_view ibs(_rwmmap->data(), _rwmmap->length());

            if (ibs.length() > 0)
            {
                // read count of keyvals.
                int count = ibs.read<int>();
                for (auto i = 0; i < count; ++i)
                {
                    if (_encryptEnabled)
                    {
                        std::string key(ibs.read_v());
                        std::string value(ibs.read_v());
                        this->encrypt(key, AES_DECRYPT);
                        this->encrypt(value, AES_DECRYPT);
                        updateValueForKey(key, value);
                    }
                    else
                    {
                        std::string_view key(ibs.read_v());
                        std::string_view value(ibs.read_v());
                        updateValueForKey(key, value);
                    }
                }
                _realSize = static_cast<int>(ibs.seek(0, SEEK_CUR) - sizeof(udflen_t));
            }
        }
        else