/usr/lib/urxvt/perl/remote-clipboard is in rxvt-unicode 9.20-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | #! perl
#:META:X_RESOURCE:%.store:string:the command used to store the selection
#:META:X_RESOURCE:%.fetch:string:the command used to fetch the selection
=head1 NAME
remote-clipboard - manage a shared and possibly remote clipboard
=head1 DESCRIPTION
Somewhat of a misnomer, this extension adds two menu entries to the
selection popup that allows one to run external commands to store the
selection somewhere and fetch it again.
We use it to implement a "distributed selection mechanism", which just
means that one command uploads the file to a remote server, and another
reads it.
The commands can be set using the C<URxvt.remote-selection.store> and
C<URxvt.remote-selection.fetch> resources. The first should read the
selection to store from STDIN (always in UTF-8), the second should provide
the selection data on STDOUT (also in UTF-8).
The defaults (which are likely useless to you) use rsh and cat:
URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection'
URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'
=cut
use Fcntl ();
sub msg {
my ($self, $msg) = @_;
my $ov = $self->overlay (-1, 0, $self->strwidth ($msg), 1, urxvt::OVERLAY_RSTYLE, 0);
$ov->set (0, 0, $msg);
$self->{msg} =
urxvt::timer
->new
->after (5)
->cb (sub { delete $self->{msg}; undef $ov; });
}
sub wait_pipe {
my ($self, $fh, $pid, $msg) = @_;
$self->msg ("waiting for selection process to finish...");
my $wait_pipe; $wait_pipe = urxvt::pw->new->start ($pid)->cb (sub {
my ($undef, $status) = @_;
undef $wait_pipe;
close $fh;
$status >>= 8;
$self->msg ("$msg (status $status)");
});
}
sub store {
my ($self) = @_;
my $txt = $self->selection;
local %ENV = %{ $self->env };
if (my $pid = open my $fh, "|-:utf8", $self->{store_cmd}) {
fcntl $fh, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK;
$self->{iow} = urxvt::iow
->new
->fd (fileno $fh)
->events (urxvt::EV_WRITE)
->start
->cb (sub {
if (my $len = syswrite $fh, $txt) {
substr $txt, 0, $len, "";
$self->msg ((length $txt) . " chars to go...");
} else {
delete $self->{iow};
$self->wait_pipe ($fh, $pid, "selection stored");
}
});
}
}
sub fetch {
my ($self) = @_;
my $txt;
local %ENV = %{ $self->env };
if (my $pid = open my $fh, "-|:utf8", $self->{fetch_cmd}) {
fcntl $fh, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK;
$self->{iow} = urxvt::iow
->new
->fd (fileno $fh)
->events (urxvt::EV_READ)
->start
->cb (sub {
if (my $len = sysread $fh, $txt, 8192, length $txt) {
$self->msg ((length $txt) . " chars read...");
} else {
delete $self->{iow};
$self->selection_clear;
$self->selection ($txt);
$self->selection_grab (urxvt::CurrentTime);
$self->msg ("selection fetched");
}
});
}
}
sub on_start {
my ($self) = @_;
$self->{store_cmd} = $self->x_resource ("%.store")
|| "rsh ruth 'cat >/tmp/distributed-selection'";
$self->{fetch_cmd} = $self->x_resource ("%.fetch")
|| "rsh ruth 'cat /tmp/distributed-selection'";
push @{ $self->{term}{selection_popup_hook} }, sub {
("selection => remote" => sub { $self->store })
};
push @{ $self->{term}{selection_popup_hook} }, sub {
("remote => selection" => sub { $self->fetch })
};
()
}
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