# hl7_conv

use strict;
use warnings;

my $input = q(AB\T\F\S\CD\E\E\E\R\R\R);
my $gen_out = '';
my $exp_out = q(AB&F^CD\\E\\R~R);

my $rx_hl7_ctrl_chars = qr/\\([EFRST])\\/;
my %convs = (
    E   => '\\',
    F   => '|',
    R   => '~',
    S   => '^',
    T   => '&',
);

$gen_out = hl7_replace($input);

print "INPUT:   $input\n";
print "GEN_OUT: $gen_out\n";
print "EXP_OUT: $exp_out\n";

print $0, ': ', $gen_out eq $exp_out ? 'SUCCESS!' : '  Z z . c8o,  ', "\n";

exit 0;

sub hl7_replace
{
    my $in = shift;

    $in =~ s/$rx_hl7_ctrl_chars/$convs{$1}/g;

    return $in;
}