CommandLineParser.h

/*
GRT MIT License
Copyright (c) <2012> <Nicholas Gillian, Media Lab, MIT>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
and associated documentation files (the "Software"), to deal in the Software without restriction, 
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, 
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial 
portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#ifndef GRT_COMMAND_LINE_PARSER_HEADER
#define GRT_COMMAND_LINE_PARSER_HEADER

#include <iostream>
#include <vector>
#include <algorithm>
#include <fstream>
#include <sstream>
#include <stdio.h>
#include <stdlib.h>
#include <limits>
#include <math.h>
#include <fstream>
#include <typeinfo>
#include "InfoLog.h"
#include "WarningLog.h"
#include "ErrorLog.h"

GRT_BEGIN_NAMESPACE

class CommandLineParser {
public:
    CommandLineParser():infoLog("[CommandLineParser]"),errorLog("[ERROR CommandLineParser]"),warningLog("[WARNING CommandLineParser]"){}

    virtual ~CommandLineParser(){}
    
    bool addOption(const std::string &option,const std::string &id){

        //Make sure the option has not already been added
        std::map<std::string,std::string>::iterator it = options.find( option );
        if( it != options.end() ){
            return false;
        }

        //Add the option and id
        options[option] = id;
        return true;
    }

    bool parse( const int argc, char * argv[] ){
        
        results.clear();
        
        std::map<std::string,std::string>::iterator it;
        for(int i=1; i<argc; i++){
            
            //Search for a match in the options map
            it = options.find( std::string(argv[i]) );
            if( it != options.end() ){
                results[  it->second ] = std::string(argv[i+1]);
            }
        }
        
        return true;
    }
    
    template<class T> bool get(const std::string &id,T &value,T defaultValue = T()){
        
        //Find the option in the results buffer
        std::map<std::string,std::string>::iterator it;
        it = results.find( id );
        
        if( it == results.end() ){
            value = defaultValue;
            warningLog << "get(const std::string &id,T &value) - Failed to find id: " << id << std::endl;
            return false;
        }
        
        //Convert the data associated with the id to the relevant type
        try{
            std::stringstream s( it->second );
            s >> value;
            return true;
        }catch( ... ){
            value = defaultValue;
            warningLog << "get(const std::string &id,T &value) - Can not parse type: " << typeid( value ).name() << std::endl;
        }

        return false;
    }
    
    bool validate(const std::string &id){
        
        //Find the option in the results buffer
        std::map<std::string,std::string>::iterator it;
        it = results.find( id );
        
        if( it == results.end() ){
            warningLog << "validate(const std::string ) - Failed to find id: " << id << std::endl;
            return false;
        }
        
        //If we get this far then we've found a match
        return true;
    }

    bool setInfoLoggingEnabled(const bool loggingEnabled){
        infoLog.setEnableInstanceLogging( loggingEnabled );
        return true;
    }

    bool setWarningLoggingEnabled(const bool loggingEnabled){
        warningLog.setEnableInstanceLogging( loggingEnabled );
        return true;
    }

    bool setErrorLoggingEnabled(const bool loggingEnabled){
        errorLog.setEnableInstanceLogging( loggingEnabled );
        return true;
    }

protected:
    InfoLog infoLog;
    WarningLog warningLog;
    ErrorLog errorLog;
    std::map< std::string, std::string > options;
    std::map< std::string, std::string > results;

};

GRT_END_NAMESPACE

#endif //GRT_COMMAND_LINE_PARSER_HEADER