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

    string source = "";
    string newName = "";
    string myArg = getArgs();
    myArg = myArg.substr(myArg.find_first_not_of(' '));

    while (myArg[0] != ' ') {
        source += myArg[0];
        myArg = myArg.substr(1);
    }

    while (myArg.size() > 0) {
        if (myArg[0] == ' ')
            myArg = myArg.substr(1);
        else {
            newName += myArg[0];
            myArg = myArg.substr(1);
        }
    }

    string workingDirName = fs.getWorkingDirectory().getName();
    Directory* currDir = &fs.getWorkingDirectory();

    if ((source[0] == '/') & (source.size() > 1)) {
        *currDir = fs.getRootDirectory();
        source = source.substr(1);
    }

    string currentName = "";
    bool found(false);

    while (!found) {
        if ((source[0] != '.') & (source[0] != '/')) {
            currentName += source[0];
            source = source.substr(1);
        }

        if ((source.size() == 0) & (currentName.size() > 0)) {
            if (currentName == workingDirName) {
                cout << "Can’t rename the working directory" << endl;
                return;
            }
            size_t counter = 0;
            size_t pos = -1;
            for (size_t i(0); i < currDir->getChildren().size(); i++) {
                if (currDir->getChildren()[i]->getName() == currentName) {
                    counter++;
                    pos = i;
                }
            }

            for (size_t i(0); i < currDir->getChildren().size(); i++)
                if (currDir->getChildren()[i]->getName() == newName)
                    return;

            if (counter == 1) {
                currDir->getChildren()[pos]->setName(newName);
                found = true;
                return;

            } else if (counter > 1)
                return;

            else {
                cout << "No such file or directory" << endl;
                return;
            }
        }

        if ((source[0] == '/') & (currentName.size() > 0)) {
            bool stop(false);
            for (size_t i(0); (i<currDir->getChildren().size()) & (!stop); i++) {
                if (currDir->getChildren()[i]->getName() == currentName) {
                    stop=true;
                    currDir=(dynamic_cast<Directory*>(currDir->getChildren()[i]));
                    source=source.substr(1);
                    currentName="";
                }
            }
            if(!stop){
                cout << "No such file or directory" << endl;
                return;
            }
        }

        if((source.size()>=3) & (source[0]=='.') & (source[1]=='.') & (source[2]=='/')){
            currDir=currDir->getParent();
            source=source.substr(3);
        }
    }
}