Function command_process

src/command/AllCommands.cxx:379–439

}

CommandResult
command_process(Client &client, unsigned num, char *line) noexcept
{
	Response r(client, num);

	/* get the command name (first word on the line) */
	/* we have to set current_command because Response::Error()
	   expects it to be set */

	Tokenizer tokenizer(line);

	const char *cmd_name;
	try {
		cmd_name = tokenizer.NextWord();
		if (cmd_name == nullptr) {
			r.Error(ACK_ERROR_UNKNOWN, "No command given");
			/* this client does not speak the MPD
			   protocol; kick the connection */
			return CommandResult::FINISH;
		}
	} catch (const std::exception &e) {
		r.Error(ACK_ERROR_UNKNOWN, e.what());
		/* this client does not speak the MPD protocol; kick
		   the connection */
		return CommandResult::FINISH;
	}

	try {
		/* now parse the arguments (quoted or unquoted) */

		StaticVector<const char *, COMMAND_ARGV_MAX> argv;

		while (true) {
			char *a = tokenizer.NextParam();
			if (a == nullptr)
				break;

			if (argv.full()) {
				r.Error(ACK_ERROR_ARG, "Too many arguments");
				return CommandResult::ERROR;
			}

			argv.push_back(a);
		}

		const Request args{argv};

		/* look up and invoke the command handler */

		const struct command *cmd =
			command_checked_lookup(r, client.GetPermission(),
					       cmd_name, args);
		if (cmd == nullptr)
			return CommandResult::ERROR;

		return cmd->handler(client, args, r);
	} catch (...) {
		PrintError(r, std::current_exception());