How to fetch values of parameters while creating a virtual table in sqlite?

I have defined all the virtual table apis (ex: bestIndex,create,connect) .I need to know the argument's value("/home/< user-name >/test_files/file_1") at the time of create API call when user will fire below query .

create virtual table < table-name > using module("/home/< user-name >/test_files/file_1") .
How to fetch values of parameters while creating a virtual table in sqlite?