use 5.010;
use Text::Wrap qw(wrap $columns);

our $columns = 57;                 # change this
my $hbar = q{-} x ($columns + 12); # DON'T change this

printf
"%s\n| TITLE   |%-${columns}s|
%s\n| AUTHOR  |%-${columns}s|
%s\n| DATE    |%-${columns}s|
%s\n| CONTENT |%-${columns}s|
%s\n", map({
        if (/\n/) {
            s{^(.*)\K\n}
            {
               sprintf("%*s\n|", $columns - length($1), '|').
               q{ } x (length($hbar)-$columns-3).
               q{| }
            }egm;

            s{\n\|\h+\|(.*)\K\z}
            {
               sprintf '%*s', $columns - length($1), q{ }
            }e;
            s{\A(.*)\K\|$}{length($1)<$columns ? q{ |} : q{|}}em;
        } $_
    } map({$hbar, q{ } . wrap(q{}, q{}, $_)}
    $title, $author, $date, $content),$hbar);