libencode-locale-perl

utility to determine the locale encoding
In many applications it's wise to let Perl use Unicode for the strings it
processes. Most of the interfaces Perl has to the outside world are still byte
based. Programs therefore need to decode byte strings that enter the program
from the outside and encode them again on the way out.
.
The POSIX locale system is used to specify both the language conventions
requested by the user and the preferred character set to consume and output.
The Encode::Locale module looks up the charset and encoding (called a CODESET
in the locale jargon) and arranges for the Encode module to know this encoding
under the name "locale". It means bytes obtained from the environment can be
converted to Unicode strings by calling Encode::encode(locale => $bytes) and
converted back again with Encode::decode(locale => $string).