Protected methods

Some protected methods have been written to create and manage different directory types, among which the most interesting ones are those used to identify packages and to compute levels:

• $\texttt{string get\_pkgname(char*}$ path $\texttt{)}$ is trivial: it takes a level-one pathname as argument and extract the last element;
• $\texttt{int dir\_level(string}$ dir $\texttt{)}$ counts slashes in the pathname and subtract the baselevel. This way it is able to return the current pathname level.