#!/usr/bin/perl

use strict;
use warnings;

{
  package MyEnc;

  use base qw( Encode::Encoding );
  __PACKAGE__->Define(qw( japhy ));

  sub encode {
    my ($self, $str, $chk) = @_;
    $_[1] = '' if $chk;
    $str =~ s/^/> /mg;
    return $str;
  }

  sub decode {
    my ($self, $str, $chk) = @_;
    $_[1] = '' if $chk;
    $str =~ s/^< //mg;
    return $str;
  }
}

open my($in), "<:encoding(japhy)", "input" or die $!;
open my($out), ">:encoding(japhy)", "output" or die $!;
print $out $_ while <$in>;

##</code><code>##

< abc
< def

##</code><code>##

> abc
> def

##</code><code>##

open my($in), "<&:encoding(japhy)", "STDIN" or die $!;
open my($out), ">&:encoding(japhy)", "STDOUT" or die $!;

##</code><code>##

< > abc
< > def

##</code><code>##

open my($in), "<-:encoding(japhy)" or die $!;
open my($out), ">-:encoding(japhy)" or die $!;

##</code><code>##

Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
  Platform:
    osname=linux, osvers=2.6.15, archname=i486-linux-gnu-thread-multi
    uname='linux ninsei 2.6.15 #1 smp preempt sat jan 7 12:47:52 pst 2006 i686 gnulinux '
    config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN -Dcccdlflags=-fPIC -Darchname=i486-
linux-gnu -Dprefix=/usr -Dprivlib=/usr/share/perl/5.8 -Darchlib=/usr/lib/perl/5.8 -Dvendorprefix=/us
r -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local -Dsitelib=/usr/lo
cal/share/perl/5.8.8 -Dsitearch=/usr/local/lib/perl/5.8.8 -Dman1dir=/usr/share/man/man1 -Dman3dir=/u
sr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man3 -Dman1ext=1 -D
man3ext=3perl -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh -Uusesfio -Uusenm -Duseshrplib -Dlibperl=
libperl.so.5.8.8 -Dd_dosuid -des'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=define use5005threads=undef useithreads=define usemultiplicity=define
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBIAN -fno-strict-aliasing 
-pipe -Wdeclaration-after-statement -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBIAN -fno-strict-aliasing -pipe
-Wdeclaration-after-statement -I/usr/local/include'
    ccversion='', gccversion='4.0.3 20060128 (prerelease) (Debian 4.0.2-8)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
    perllibs=-ldl -lm -lpthread -lc -lcrypt
    libc=/lib/libc-2.3.5.so, so=so, useshrplib=true, libperl=libperl.so.5.8.8
    gnulibc_version='2.3.5'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib'


Characteristics of this binary (from libperl): 
  Compile-time options: MULTIPLICITY PERL_IMPLICIT_CONTEXT
                        PERL_MALLOC_WRAP THREADS_HAVE_PIDS USE_ITHREADS
                        USE_LARGE_FILES USE_PERLIO USE_REENTRANT_API
  Built under linux
  Compiled at Feb  9 2006 22:12:59
  %ENV:
    PERL5LIB="/home/japhy/perllib/share/perl/5.8.7"
  @INC:
    /home/japhy/perllib/share/perl/5.8.7
    /etc/perl
    /usr/local/lib/perl/5.8.8
    /usr/local/share/perl/5.8.8
    /usr/lib/perl5
    /usr/share/perl5
    /usr/lib/perl/5.8
    /usr/share/perl/5.8
    /usr/local/lib/site_perl
    /usr/local/lib/perl/5.8.7
    /usr/local/share/perl/5.8.7