C++ (Cpp) ptree::put_value Examples

Example #1

File: Settings.cpp Project: icyerasor/joynr

void Settings::merge(const boost::property_tree::ptree& from,
                     boost::property_tree::ptree& to,
                     bool overwrite)
{
    // Is this a single value or a subtree?
    if (!from.data().empty()) {
        // Single value
        if (overwrite || to.data().empty()) {
            to.put_value(from.data());
        }
        return;
    }

    // Subtree
    for (const auto& fromEntry : from) {
        // Does the key exist in the destination?
        auto toIt = to.find(fromEntry.first);
        if (toIt == to.not_found()) {
            ptree::ptree child;

            // Recurse into the new child
            merge(fromEntry.second, child, overwrite);

            // Create a path object because ptree uses '.' as a path delimiter
            // when strings are used
            ptree::ptree::path_type treePath = createPath(fromEntry.first);
            to.add_child(treePath, child);
        } else {
            // Recurse into the subtrees
            merge(fromEntry.second, toIt->second, overwrite);
        }
    }
}