Using a regexp to split the datastream between character sets makes perfect sense.

For the conversion between character sets you could opt to reuse the existing (core) module Encode and add a new encoding for each new character set that you would like to support.
See Encode::Encoding for instructions.

Using the Encode module is straight forward, some nice examples are given in the Unicode Tutorial on Perlmonks.

In reply to Re: Shooting at a Moving Target by varian
in thread Shooting at a Moving Target by Anonymous Monk

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