/* 
 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
 *
 * This program 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 2 of the
 * License.
 * 
 * This program 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
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301  USA
 */

#ifndef _GRTPP_SHELL_H_
#define _GRTPP_SHELL_H_

#include <grtpp.h>

namespace grt {
  
  typedef enum {
    ShellCommandUnknown = -1,
      ShellCommandExit = 0,
      ShellCommandAll,
      ShellCommandError,
      ShellCommandStatement,
      ShellCommandHelp,
      ShellCommandLs,
      ShellCommandCd,
      ShellCommandRun
  } ShellCommand;


#define MYX_SHELL_CURNODE "current"
  
  class MYSQLGRT_PUBLIC Shell
  {
  public:
    Shell(GRT *grt);
    virtual ~Shell();

    bool set_disable_quit(bool flag);

    ShellCommand execute(const std::string &linebuf);

    virtual std::string shell_type()= 0;
    
    virtual void init()= 0;
    virtual void print_welcome()= 0;
    virtual std::string get_prompt()= 0;
    virtual int execute_line(const std::string &linebuf)= 0;
    virtual int run_file(const std::string &file_name, bool interactive)= 0;
    virtual void show_help(const std::string &topic)= 0;

    virtual std::vector<std::string> complete_line(const std::string &line, std::string &completed)= 0;

    virtual ValueRef get_global_var(const std::string &var_name)= 0;
    virtual int set_global_var(const std::string &var_name, const ValueRef &value)= 0;


    static std::string get_abspath(const std::string &cwd, const std::string &npath);


    virtual void print(const std::string &str);

  protected:
    GRT *_grt;
    
    bool _disable_quit;
  };

};

#endif
