libio-callback-perl - 2.00-1 main

IO::Callback provides an easy way to produce
a phoney read-only filehandle that calls back to your own code
when it needs data to satisfy a read.
This is useful if you want to use a library module
that expects to read data from a filehandle,
but you want the data to come from some other source
and you don't want to read it all into memory and use IO::String.