rxvt-unicode 9.21-1build1 / usr / lib / urxvt / perl / selection-popup

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/usr/lib/urxvt/perl/selection-popup is in rxvt-unicode 9.21-1build1.

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The actual contents of the file can be viewed below. 

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#! perl

#:META:RESOURCE:url-launcher:string:shell command to use

=head1 NAME

selection-popup - (enabled by default)

=head1 DESCRIPTION

Binds a popup menu to Ctrl-Button3 that lets you paste the X
selections and either modify or use the internal selection text in
various ways (such as uri unescaping, perl evaluation, web-browser
starting etc.), depending on content.

Other extensions can extend this popup menu by pushing a code reference
onto C<< @{ $term->{selection_popup_hook} } >>, which gets called whenever
the popup is being displayed.

Its sole argument is the popup menu, which can be modified. The selection
is in C<$_>, which can be used to decide whether to add something or not.
It should either return nothing or a string and a code reference. The
string will be used as button text and the code reference will be called
when the button gets activated and should transform C<$_>.

The following will add an entry C<a to b> that transforms all C<a>s in
the selection to C<b>s, but only if the selection currently contains any
C<a>s:

   push @{ $self->{term}{selection_popup_hook} }, sub {
      /a/ ? ("a to b" => sub { s/a/b/g }
          : ()
   };

=cut

sub msg {
   my ($self, $msg) = @_;

   my $overlay = $self->overlay (0, 0, $self->strwidth ($msg), 1);
   $overlay->set (0, 0, $msg);
   $self->{timer} = urxvt::timer->new->after (1)->cb (sub {
      delete $self->{timer};
      undef $overlay;
   });
}

sub on_start {
   my ($self) = @_;

   $self->{browser} = $self->x_resource ("url-launcher") || "sensible-browser";

   $self->grab_button (3, urxvt::ControlMask);

   ()
}

sub on_button_press {
   my ($self, $event) = @_;

   if ($event->{button} == 3 && $event->{state} & urxvt::ControlMask) {
      my $popup = $self->popup ($event)
         or return 1;

      $popup->add_title ("Selection");

      my $text = $self->selection;

      my $title = $text;
      $title =~ s/[\x00-\x1f\x80-\x9f]/·/g;
      substr $title, 40, -1, "..." if 40 < length $title;
      $popup->add_title ($title);
      $popup->add_separator;

      my $add_button = sub {
         my ($title, $cb) = @_;

         $popup->add_button ($title => sub {
            for ($text) {
               my $orig = $_;
               $cb->();

               if ($orig ne $_) {
                  $self->selection ($_);
                  s/[\x00-\x1f\x80-\x9f]/·/g;
                  $self->msg ($self->special_encode ($_));
               }
            }
         });
      };

      for ($text) {
         /\n/
            and $add_button->("paste primary selection" => sub { $self->selection_request (urxvt::CurrentTime, 1) });

         /./
            and $add_button->("paste clipboard selection" => sub { $self->selection_request (urxvt::CurrentTime, 3) });

         /./
            and $add_button->("copy selection to clipboard" => sub { $self->selection ($self->selection, 1);
								     $self->selection_grab (urxvt::CurrentTime, 1) });

         /./
            and $add_button->("newlines to spaces" => sub { y/\n/ / });

         /./
            and $add_button->("rot13" => sub { y/A-Za-z/N-ZA-Mn-za-m/ });

         /./
            and $add_button->("eval perl expression" => sub { my $self = $self; no warnings; $_ = eval $_; $_ = "$@" if $@ });

         /./
            and $add_button->((sprintf "to unicode hex index (%x)", ord) => sub { $_ = sprintf "%x", ord });

         /(\S+):(\d+):?/
            and $add_button->("vi-commands to load '$1'" => sub { s/^(\S+):(\d+):?$/\x1b:e $1\x0d:$2\x0d/ });

         /%[0-9a-fA-F]{2}/ && !/%[^0-9a-fA-F]/ && !/%.[^0-9a-fA-F]/
            and $add_button->("uri unescape" => sub { s/%([0-9a-fA-F]{2})/chr hex $1/ge });

         /[\\"'\ \t|&;<>()]/
            and $add_button->("shell quote" => sub { $_ = "\Q$_" });

         /^(https?|ftp|telnet|irc|news):\//
            and $add_button->("run $self->{browser}" => sub { $self->exec_async ($self->{browser}, $_) });

         for my $hook (@{ $self->{term}{selection_popup_hook} || [] }) {
            if (my ($title, $cb) = $hook->($popup)) {
               $add_button->($title, $cb);
            }
         }

         if (/^\s*((?:0x)?\d+)\s*$/) {
            $popup->add_title (sprintf "%20s", eval $1);
            $popup->add_title (sprintf "%20s", sprintf "0x%x", eval $1);
            $popup->add_title (sprintf "%20s", sprintf "0%o", eval $1);
         }
      }

      $popup->show;

      return 1;
   }

   ()
}

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