Method parse

pdal/util/Bounds.cpp:282–371

This parses the guts of a 2D range.

// This parses the guts of a 2D range.
void BOX2D::parse(const std::string& s, std::string::size_type& pos)
{

    bool isJson(false);
    bool isArray(false);
    bool isObject(false);
    std::string jsonParseMessage("");
    NL::json b;
    try
    {
        b = NL::json::parse(s);
        isJson = true;
        isArray = b.is_array();
        isObject = b.is_object();
    } catch (std::exception& e)
    {
        jsonParseMessage = e.what();
        isJson = false;
    }

    if (isArray && isJson)
    {
        if (b.size() != 4)
        {
            std::stringstream msg;
            msg << "GeoJSON array size must be 4 for BOX2d. It was " << b.size();
            throw error(msg.str());
        }
        minx = b[0].get<double>();
        miny = b[1].get<double>();
        maxx = b[2].get<double>();
        maxy = b[3].get<double>();

        // parsed. we are done
        pos = s.size();
        return;
    }

    if (isObject && isJson)
    {
        if (!b.contains("minx"))
            throw error("Object must contain 'minx'");
        minx = b["minx"].get<double>();

        if (!b.contains("miny"))
            throw error("Object must contain 'miny'");
        miny = b["miny"].get<double>();

        if (!b.contains("maxx"))
            throw error("Object must contain 'maxx'");
        maxx = b["maxx"].get<double>();

        if (!b.contains("maxy"))
            throw error("Object must contain 'maxy'");
        maxy = b["maxy"].get<double>();

        if (b.contains("crs"))
            wkt = b["crs"].get<std::string>();