impl io io io InputStream io latin1reader default_buffer_size inputstream finputstream fbuffer latin1reader inputstream inputstream inputstream default_buffer_size latin1reader inputstream inputstream inputstream latin1reader inputstream inputstream buffer finputstream inputstream fbuffer buffer read finputstream.read read ch offset length length fbuffer.length length fbuffer.length count finputstream.read fbuffer length count ch offset fbuffer count skip finputstream.skip ready marksupported finputstream.marksupported mark readaheadlimit finputstream.mark readaheadlimit reset finputstream.reset close finputstream.close