mkdir

void MkdirCommand::execute(FileSystem &fs) {
    if((verbose==2) | (verbose==3)){
        cout<<this->toString()+' '+this->getArgs()<<endl;
    }

    Directory* currentDirToReSet = &fs.getWorkingDirectory();
    Directory* currentDir =  &fs.getWorkingDirectory();
    CdCommand cd(getArgs());
    if(cd.executeBool(fs)){
        cout<<"The directory already exists"<<endl;
        fs.setWorkingDirectory(currentDirToReSet);
        return;
    }
    fs.setWorkingDirectory(currentDir);

    string myArg = getArgs();

    if(myArg.size()!=0)
        myArg=myArg.substr(myArg.find_first_not_of(' '));

    if (myArg[0]=='/'){
        fs.setWorkingDirectory(&fs.getRootDirectory());
        myArg=myArg.substr(1);
        currentDir=&fs.getWorkingDirectory();
    }

    string currentName="";

    while (myArg.size()!=0){
        if((myArg[0]!='/') & (myArg[0]!='.')) {
            currentName += myArg[0];
            myArg=myArg.substr(1);
        }
        if(myArg[0]=='/'){
            bool found(false);
            for(size_t i(0);(i<currentDir->getChildren().size()) & (!found) ;i++){
                if(currentDir->getChildren()[i]->getName()==currentName ){
                    if (currentDir->getChildren()[i]->isFile()){
                        cout<<"The directory already exists"<<endl;
                        return;
                    }
                    found=true;
                    currentDir= dynamic_cast<Directory *>(currentDir->getChildren()[i]);
                    fs.setWorkingDirectory(currentDir);
                }
            }
            if(!found){
                Directory* toAdd = new Directory(currentName,currentDir);
                currentDir->addFile(toAdd);
                fs.setWorkingDirectory(toAdd);
                currentDir=toAdd;
            }
            myArg=myArg.substr(1);
            currentName="";
        }
        if((myArg.size()>=3) && (myArg.substr(0,3)=="../")){
            if(&fs.getRootDirectory()==currentDir)
                return;
            myArg=myArg.substr(3);
            currentDir=currentDir->getParent();
            fs.setWorkingDirectory(currentDir);
        }
    }//while
    if(currentName.size()>0){//the myArg string is empty and we hold the name of the final directory
        Directory* toAdd = new Directory(currentName,currentDir);
        currentDir->addFile(toAdd);
        fs.setWorkingDirectory(toAdd);
    }
    fs.setWorkingDirectory(currentDirToReSet);
}