#!/usr/bin/env perl
use strict;
use warnings;
use MIME::Base64 qw(encode_base64);

my $b = "\\"; # 1 backslash, not 2

my $normal = sub {
    my $base64 = shift;
    print "\e]52;;", $base64, "\e$b";
};

my $tmux = sub {
    my $base64 = shift;
    print "\ePtmux;\e\e]52;;", $base64, "\e\e$b$b\e$b";
};

my $screen = sub {
    my $base64 = shift;
    my $len = 76;
    my $first = 1;
    while (1) {
        my $chunk = substr $base64, 0, $len, "";
        last if $chunk eq "";
        if ($first) {
            print "\eP\e]52;;", $chunk;
            undef $first;
        } else {
            print "\e$b\eP", $chunk;
        }
    }
    print "\a\e$b";
};

my $input = do { local $/; <> } || "";
$input =~ s/\n+\z//sm;
length $input or exit;

my $print = $normal; # default
CHOOSE: {
    if (my $tmux_env = $ENV{TMUX}) {
        (undef, my $pid) = split /,/, $tmux_env, 3;
        if ($pid) {
            my $ps = `ps -p $pid -o command= 2>/dev/null` || "";
            chomp $ps;
            (undef, my @option) = split /\s+/, $ps;
            last CHOOSE if grep { $_ eq "-CC" } @option;
        }
        $print = $tmux;
    } elsif ( ($ENV{TERM} || "") =~ /^screen/ ) {
        $print = $screen;
    }
}

$print->( encode_base64($input, "") );

__END__

=head1 NAME

pbcopy - remote pbcopy for iTerm2

=head1 AUTHOR

Shoichi Kaji

=head1 LICENSE

MIT

=cut