Method doSwitches

pdal/SubcommandKernel.cpp:41–79

{

bool SubcommandKernel::doSwitches(const StringList& cmdArgs, ProgramArgs& args)
{
    StringList stringArgs = extractStageOptions(cmdArgs);

    try
    {
        bool help;

        // parseSimple allows us to scan for the help option without
        // raising exception about missing arguments and so on.
        // It also removes consumed args from the arg list, so parse a copy
        // that will be ignored by parse() below.
        // Also search for a subcommand.
        ProgramArgs hargs;
        const StringList& subs = subcommands();
        assert(subs.size());
        hargs.add("help,h", "Print help message", help);
        hargs.add("subcommand", "Subcommand for application", m_subcommand).
            setPositional();
        hargs.parseSimple(stringArgs);
        if (help)
            return false;

        if (m_subcommand.empty())
            throw pdal_error(getName() + ": no subcommand found.");
        if (!Utils::contains(subs, m_subcommand))
            throw pdal_error(getName() + ": invalid subcommand '" +
                m_subcommand + "'.");

        addBasicSwitches(args);
        addSubSwitches(args, m_subcommand);
        args.parse(stringArgs);
    }
    catch (arg_error& e)
    {
        throw pdal_error(getName() + ": " + e.what());
    }
    return true;
}


void SubcommandKernel::outputHelp()