insert/select Bfiles into Clobs and Blobs into Clobs

[mgpr]

How i could convert bfile's and blob's into clob's with PL/SQL.
I got table with a bfile and blob, sometimes there are only text files and it would be much easier to work with them when they would be in clob format, so how i could insert/select them into another table with clob's?

thanks mike