CommandInterpreter.h

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/* -*- c++ -*-
 * Copyright (C) 2007-2015 Hypertable, Inc.
 *
 * This file is part of Hypertable.
 *
 * Hypertable is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; version 3 of the
 * License, or any later version.
 *
 * Hypertable is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
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 */


#ifndef Tools_client_thriftbroker_CommandInterpreter_h
#define Tools_client_thriftbroker_CommandInterpreter_h

#include <ThriftBroker/Client.h>

#include <Tools/Lib/CommandInterpreter.h>

#include <AsyncComm/Comm.h>

#include <memory>
#include <string>
#include <unordered_map>

namespace Tools {
namespace client {
namespace thriftbroker {

  using namespace Hypertable;


  class CommandInterpreter : public Hypertable::CommandInterpreter {
  public:

    CommandInterpreter(Thrift::ClientPtr &client, bool nowait=false)
      : m_client(client) {
      (void)nowait;
      load_help_text();
    };

    int execute_line(const String &line) override;

  private:

    class ParseResult {
    public:
      void clear();
      int32_t command {};
      std::vector<std::string> args;
      int64_t offset {};
    };

    void parse_line(const String &line, ParseResult &result) const;

    void load_help_text();

    void display_help_text(const std::string &command) const;

    void display_usage(const std::string &command) const;

    void parse_error(const std::string &command) const;

    Thrift::ClientPtr m_client;

    std::unordered_map<std::string, const char **> m_help_text;

  };

  typedef std::shared_ptr<CommandInterpreter> CommandInterpreterPtr;


}}}

#endif // Tools_client_thriftbroker_CommandInterpreter_h