drwnConfigManager.h

/******************************************************************************
** DARWIN: A FRAMEWORK FOR MACHINE LEARNING RESEARCH AND DEVELOPMENT
** Distributed under the terms of the BSD license (see the LICENSE file)
** Copyright (c) 2007-2015, Stephen Gould
** All rights reserved.
**
******************************************************************************
** FILENAME:    drwnConfigManager.h
** AUTHOR(S):   Stephen Gould <stephen.gould@anu.edu.au>
**
*****************************************************************************/

#pragma once

#include <string>
#include <string.h>
#include <iostream>
#include <map>

#include "drwnXMLParser.h"

using namespace std;

// drwnConfigurableModule -----------------------------------------------------

class drwnConfigurableModule {
 private:
    string _moduleName; 

 public:
    drwnConfigurableModule(const char *module);
    virtual ~drwnConfigurableModule();

    inline const string& name() const { return _moduleName; }
    virtual void usage(ostream& os) const;

    void readConfiguration(const char *filename);
    virtual void readConfiguration(drwnXMLNode& node);
    virtual void setConfiguration(const char* name, const char *value) = 0;
};

// drwnConfigurationManager ---------------------------------------------------

class drwnConfigurationManager {
 friend class drwnConfigurableModule;

 private:
    typedef map<string, drwnConfigurableModule *> drwnConfigRegistry;
    drwnConfigRegistry _registry;

 public:
    ~drwnConfigurationManager();

    static drwnConfigurationManager& get();

    void configure(const char *filename);
    void configure(drwnXMLNode& root);
    void configure(const char *module, const char *name, const char *value);

    void showModuleUsage(const char *module) const;
    void showRegistry(bool bIncludeUsage = true) const;

 protected:
    drwnConfigurationManager(); // singleton class so hide constructor

    void registerModule(drwnConfigurableModule *m);
    void unregisterModule(drwnConfigurableModule *m);
};