Method GetSubKeys

PathCopyCopy/src/UserOverrideableRegKey.cpp:248–275

Scans both the user and global keys to find subkeys and returns a list of all such subkeys. Subkeys in the user key take precedence over those in the global key. @param p_rvSubkeys Where to store information about the subkeys.

// @param p_rvSubkeys Where to store information about the subkeys.
//
void UserOverrideableRegKey::GetSubKeys(SubkeyInfoV& p_rvSubkeys) const
{
    // This is pretty much the same thing as GetValues.
    SubkeyInfoV vSubkeys;

    if (!Locked()) {
        m_UserKey.GetSubKeys(vSubkeys);
    }
    if (m_GlobalKey.Valid()) {
        m_GlobalKey.GetSubKeys(vSubkeys);
    }

    const auto compareSubkeyInfos = [](const SubkeyInfo& p_Subkey1, const SubkeyInfo& p_Subkey2) noexcept {
        return ::_wcsicmp(p_Subkey1.m_KeyName.c_str(), p_Subkey2.m_KeyName.c_str()) < 0;
    };
    std::stable_sort(vSubkeys.begin(), vSubkeys.end(), compareSubkeyInfos);

    const auto subkeyInfosEqual = [](const SubkeyInfo& p_Subkey1, const SubkeyInfo& p_Subkey2) noexcept {
        return ::_wcsicmp(p_Subkey1.m_KeyName.c_str(), p_Subkey2.m_KeyName.c_str()) == 0;
    };
    vSubkeys.erase(std::unique(vSubkeys.begin(), vSubkeys.end(), subkeyInfosEqual), vSubkeys.end());

    if (p_rvSubkeys.empty()) {
        p_rvSubkeys = std::move(vSubkeys);
    } else {
        p_rvSubkeys.insert(p_rvSubkeys.end(), vSubkeys.cbegin(), vSubkeys.cend());
    }
}

//
// Tries to save a DWORD value in the registry key.