Kommando liste

Kode 

#include <iostream>
#include <string>

using namespace std;

bool in_array(string arg[], int size, string searchString)
{
    for(int i = 0; i < size; i++)
    {
        if(arg[i] == searchString)
            return true;
    }

    return false;
}

int main()
{
    string args[]= {"save", "clear", "ready", "exit", "and", "so", "on"};

    if(in_array(args, 7, "something"))
        cout << "Yes!" << endl;
    else
        cout << "No!" << endl;
}

Kode 

bool in_array(vector<string> arg, string searchString)
{
    for(int i = 0; i < arg.size(); i++)
    {
        if(arg[i] == searchString)
            return true;
    }

    return false;
}

Kode 

#include <map>
#include <iostream>
#include <string>

std::map<std::string, void (*)()> CommandList;
typedef std::map<std::string, void (*)()>::iterator CmdIterator;

void copy()
{
   std::cout << "Copy" << std::endl;
}

void erase()
{
   std::cout << "erase" << std::endl;
}

int main()
{
   CommandList["copy"] = copy;
   CommandList["erase"] = erase;
   std::string cmd;
   std::cout << "Prompt: ";
   std::cin >> cmd;
   CmdIterator it = CommandList.find(cmd);
   if(it != CommandList.end())
      it->second();
}

Kode 

class Command {
    public:
        virtual void execute(vector<string> arguments) = 0;
        virtual string getDescription() = 0;
};

class CopyCommand : public Command {
    public:
        virtual void execute(vector<string> arguments) {
            if (arguments.size() == 2) {
                copy(arguments[0], arguments[1]);
            }
        }
        virtual string getDescription() {
            return "copy <infile> <outfile>";
        }
    private:
        void copy(string infile, string outfile) {
            //....
        }
};

Kode 

# copy file.txt copy_of_file.txt

i grunden, måske jeg tænkte for simpelt men kan kan vel bare have en switch funktion så når du skriver en kommando der passer til kalder den bare en funktion?