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#! perl |
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#:META:RESOURCE:%.store:string:the command used to store the selection |
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#:META:RESOURCE:%.fetch:string:the command used to fetch the selection |
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|
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=head1 NAME |
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|
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remote-clipboard - manage a shared and possibly remote clipboard |
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=head1 DESCRIPTION |
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|
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Somewhat of a misnomer, this extension adds two menu entries to the |
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selection popup that allows one to run external commands to store the |
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selection somewhere and fetch it again. |
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|
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We use it to implement a "distributed selection mechanism", which just |
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means that one command uploads the file to a remote server, and another |
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reads it. |
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|
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The commands can be set using the C<URxvt.remote-selection.store> and |
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C<URxvt.remote-selection.fetch> resources. The first should read the |
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selection to store from STDIN (always in UTF-8), the second should provide |
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the selection data on STDOUT (also in UTF-8). |
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|
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The defaults (which are likely useless to you) use rsh and cat: |
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|
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URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection' |
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URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection' |
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|
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=cut |
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|
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use Fcntl (); |
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|
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sub msg { |
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my ($self, $msg) = @_; |
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|
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my $ov = $self->overlay (-1, 0, $self->strwidth ($msg), 1, urxvt::OVERLAY_RSTYLE, 0); |
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$ov->set (0, 0, $msg); |
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|
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$self->{msg} = |
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urxvt::timer |
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->new |
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->after (5) |
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->cb (sub { delete $self->{msg}; undef $ov; }); |
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} |
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|
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sub wait_pipe { |
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my ($self, $fh, $pid, $msg) = @_; |
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|
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$self->msg ("waiting for selection process to finish..."); |
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|
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my $wait_pipe; $wait_pipe = urxvt::pw->new->start ($pid)->cb (sub { |
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my ($undef, $status) = @_; |
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undef $wait_pipe; |
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close $fh; |
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$status >>= 8; |
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$self->msg ("$msg (status $status)"); |
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}); |
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} |
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|
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sub store { |
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my ($self) = @_; |
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|
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my $txt = $self->selection; |
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|
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local %ENV = %{ $self->env }; |
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if (my $pid = open my $fh, "|-:utf8", $self->{store_cmd}) { |
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fcntl $fh, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK; |
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$self->{iow} = urxvt::iow |
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->new |
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->fd (fileno $fh) |
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->events (urxvt::EV_WRITE) |
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->start |
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->cb (sub { |
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if (my $len = syswrite $fh, $txt) { |
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substr $txt, 0, $len, ""; |
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$self->msg ((length $txt) . " chars to go..."); |
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} else { |
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delete $self->{iow}; |
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$self->wait_pipe ($fh, $pid, "selection stored"); |
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} |
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}); |
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} |
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} |
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|
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sub fetch { |
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my ($self) = @_; |
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|
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my $txt; |
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|
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local %ENV = %{ $self->env }; |
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if (my $pid = open my $fh, "-|:utf8", $self->{fetch_cmd}) { |
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fcntl $fh, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK; |
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$self->{iow} = urxvt::iow |
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->new |
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->fd (fileno $fh) |
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->events (urxvt::EV_READ) |
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->start |
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->cb (sub { |
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if (my $len = sysread $fh, $txt, 8192, length $txt) { |
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$self->msg ((length $txt) . " chars read..."); |
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} else { |
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delete $self->{iow}; |
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$self->selection_clear; |
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$self->selection ($txt); |
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$self->selection_grab (urxvt::CurrentTime); |
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$self->msg ("selection fetched"); |
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} |
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}); |
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} |
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} |
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|
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sub on_start { |
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my ($self) = @_; |
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|
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$self->{store_cmd} = $self->x_resource ("%.store") |
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|| "rsh ruth 'cat >/tmp/distributed-selection'"; |
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|
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$self->{fetch_cmd} = $self->x_resource ("%.fetch") |
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|| "rsh ruth 'cat /tmp/distributed-selection'"; |
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|
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push @{ $self->{term}{selection_popup_hook} }, sub { |
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("selection => remote" => sub { $self->store }) |
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}; |
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push @{ $self->{term}{selection_popup_hook} }, sub { |
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("remote => selection" => sub { $self->fetch }) |
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}; |
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|
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() |
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} |
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|
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