Method parseConfig

src/Common/Config/ConfigProcessor.cpp:682–721

}

XMLDocumentPtr ConfigProcessor::parseConfig(const std::string & config_path, Poco::XML::DOMParser & dom_parser)
{
    fs::path p(config_path);
    std::string extension = p.extension();
    boost::algorithm::to_lower(extension);

    if (extension == ".xml")
        return dom_parser.parse(config_path);
    if (extension == ".yaml" || extension == ".yml")
        return YAMLParser::parse(config_path);

    /// Suppose non regular file parsed as XML, such as pipe: /dev/fd/X (regardless it has .xml extension or not)
    if (!fs::is_regular_file(config_path))
        return dom_parser.parse(config_path);

    /// If the regular file begins with < it might be XML, otherwise it might be YAML.
    bool maybe_xml = false;
    {
        std::ifstream file(config_path);
        if (!file.is_open())
            throw Exception(ErrorCodes::CANNOT_LOAD_CONFIG, "Unknown format of '{}' config", config_path);

        std::string line;
        while (std::getline(file, line))
        {
            const size_t pos = firstNonWhitespacePos(line);

            if (pos < line.size() && '<' == line[pos])
            {
                maybe_xml = true;
                break;
            }
            if (pos != std::string::npos)
                break;
        }
    }
    if (maybe_xml)
        return dom_parser.parse(config_path);
    return YAMLParser::parse(config_path);
}

XMLDocumentPtr ConfigProcessor::processConfig(
    bool * has_zk_includes,