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[h316.git] / pc-tools / ldc2 / src / configuration_manager.hh

#ifndef ARGUMENT_READER_H
#define ARGUMENT_READER_H

#include <vector>
#include <string>

using namespace std;

/*!
 *\brief Hachti's even more wonderful configuration manager.
 *
 * This class is designed to do all the work with the parameters passed to 
 * the main() routine of a program.\n
 * Additionally, it is able to interpret configuration files.
 * Usage:\n
 *   - Create an instance.
 *   - Add Parameters/switches with add_option_*().
 *   - Add Arguments with add_argument().
 *   - Call read_args() with your main routine's arguments.
 *     The vector returned by read_args() contains all error
 *     messages. When it's empty, everything is fine!
 *   - Call get_help() if you want nice formatted help output.
 *     (You want!!!)
 * Sould be easy to use....
 */
class configuration_manager{
  
protected: // Types
  /*!
   *\brief Container for an option switch
   */
  class opt_switch_t{
  public:
    opt_switch_t (const string & shortname, 
		  const string & longname,
		  const string & description, 
		  int * status,
		  const bool & allow_commandline=true, 
		  const bool & allow_config_file=true);
    string shortname;
    string longname;
    int * status;
    string * target;    
    string description;
    string placeholder;
    bool allow_conffile;
    bool allow_cmdline;
  };

  /*!
   *\brief Container for an option value
   */
  class opt_value_t{
  public:
    opt_value_t (const string & shortname, 
	      const string & longname,
	      const string & description, 
	      int * status,
	      string * target, 
	      const string & placeholder=string("<string>"),
	      const bool & allow_commandline=true, 
	      const bool & allow_config_file=true);
    string shortname;
    string longname;
    int * status;
    string * target;    
    string description;
    string placeholder;
    bool allow_conffile;
    bool allow_cmdline;
  };
  
  /*!
   *\brief Container for a commandline argument
   */
  class cmd_arg_t{
  public:
    cmd_arg_t (const  string & placeholder,
	       const  string & description,
	       int * status, 
	       string * target);
    int * status;
    string * target;    
    string description;
    string placeholder;
  };
  
public: // Methods

  configuration_manager(string name);
 
  void add_option_value (const string & shortname,
			 const string & longname, 
			 const string & description, 
			 int    *status, 
			 string *target=NULL, 
			 const string &  placeholder=string("<string>"),
			 const bool & allow_commandline=true,
			 const bool & allow_config_file=true
			 );

  void add_option_switch (const string &  shortname,
			  const string & longname, 
			  const string & description, 
			  int    *status, 
			  const bool & allow_commandline=true,
			  const bool & allow_config_file=true
			  );
  
  void add_argument (const string & description, 
		     int    *status, 
     		     string *target=NULL, 
		     const string & placeholder=string("<string>")
		     );
  
  vector<string> read_args(int argc, char ** args);
  vector<string> read_file(string filename);
  
  void get_help (vector<string> & target);
  vector<string> get_help();
  
protected: // members
  vector<opt_switch_t>option_switches;
  vector<opt_value_t>option_values;
  vector<cmd_arg_t>cmd_args;
  string app_name;

protected: // methods
  string analyse_string(const string & line);
  bool analyse_bool(const string & data);
}; // class configuration_manager


#endif