[ViewVC] Annotation of: cvs/rxvt-unicode/src/perl/searchable-scrollback

#! perl

# this extension implements scrollback buffer search

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

   my $hotkey = $self->{argv}[0]
                || $self->x_resource ("searchable-scrollback")
                || "M-s";

   $self->parse_keysym ($hotkey, "perl:searchable-scrollback:start")
      or warn "unable to register '$hotkey' as scrollback search start hotkey\n";

   ()
}

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

   $cmd eq "searchable-scrollback:start"
      and $self->enter;

   ()
}

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

   $self->{overlay} = $self->overlay (0, -1, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0);
   $self->{overlay}->set (0, 0, $self->special_encode ($msg));
}

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

   return if $self->{overlay};

   $self->{view_start} = $self->view_start;
   $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EVENT_NONE);
   $self->{row} = $self->nrow - 1;

   $self->enable (
      key_press     => \&key_press,
      tt_write      => \&tt_write,
      refresh_begin => \&refresh,
      refresh_end   => \&refresh,
   );

   $self->{manpage_overlay} = $self->overlay (0, -2, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0);
   $self->{manpage_overlay}->set (0, 0, "scrollback search, see the ${urxvt::RXVTNAME}perl manpage for details");

   $self->idle;
}

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

   $self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end");
   $self->pty_ev_events ($self->{pty_ev_events});

   delete $self->{manpage_overlay};
   delete $self->{overlay};
   delete $self->{history};
   delete $self->{search};
}

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

   $self->msg ("(escape cancels) /$self->{search}█");
}

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

   delete $self->{found};
   my $row = $self->{row};

   my $search = $self->special_encode ($self->{search});

   no re 'eval'; # just to be sure
   if (my $re = eval { qr/$search/ }) {
      while ($self->nrow > $row && $row > -$self->nsaved) {
         my $line = $self->line ($row)
            or last;

         my $text = $line->t;
         if ($text =~ /$re/g) {
            do {
               push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])];
            } while $text =~ /$re/g;

            $self->{row} = $row;
            $self->view_start (List::Util::max 0, -$row + ($self->nrow >> 1));
            $self->want_refresh;
            last;
         }

         $row = $dir < 0 ? $line->beg - 1 : $line->end + 1;
      }
   }

   $self->scr_bell unless $self->{found};
}

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

   return unless $self->{found};

   my $xor = urxvt::RS_RVid | urxvt::RS_Blink;
   for (@{ $self->{found} }) {
      $self->scr_xor_span (@$_, $xor);
      $xor = urxvt::RS_RVid;
   }

   ()
}

sub key_press {
   my ($self, $event, $keysym, $string) =  @_;

   delete $self->{manpage_overlay};

   if ($keysym == 0xff0d || $keysym == 0xff8d) { # enter
      if ($self->{found}) {
         my ($br, $bc, $er, $ec) = @{ $self->{found}[0] };
         $self->selection_beg ($br, $bc);
         $self->selection_end ($er, $ec);
         $self->selection_make ($event->{time});
      }
      $self->leave;
   } elsif ($keysym == 0xff1b) { # escape
      $self->view_start ($self->{view_start});
      $self->leave;
   } elsif ($keysym == 0xff57) { # end
      $self->{row} = $self->nrow - 1;
      $self->view_start (0);
   } elsif ($keysym == 0xff52) { # up
      $self->{row}-- if $self->{row} > -$self->nsaved;
      $self->search (-1);
   } elsif ($keysym == 0xff54) { # down
      $self->{row}++ if $self->{row} < $self->nrow;
      $self->search (+1);
   } elsif ($keysym == 0xff08) { # backspace
      substr $self->{search}, -1, 1, "";
      $self->search;
      $self->idle;
   } elsif ($string =~ /^[^\x00-\x1f\x80-\xaf]+$/) {
      return; # pass to tt_write
   }

   1
}

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

   $self->{search} .= $self->locale_decode ($data);
   $self->search (-1);
   $self->idle;

   1
}


Revision:	1.18
Committed:	Thu Jan 12 11:15:06 2006 UTC (18 years, 4 months ago) by root
Branch:	MAIN
Changes since 1.17:	+2 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#! perl
2
3			# this extension implements scrollback buffer search
4
5			sub on_init {
6			my ($self) = @_;
7
8	root	1.12	my $hotkey = $self->{argv}[0]
9			\|\| $self->x_resource ("searchable-scrollback")
10			\|\| "M-s";
11	root	1.1
12	root	1.4	$self->parse_keysym ($hotkey, "perl:searchable-scrollback:start")
13			or warn "unable to register '$hotkey' as scrollback search start hotkey\n";
14	root	1.1
15			()
16			}
17
18			sub on_keyboard_command {
19			my ($self, $cmd) = @_;
20
21	root	1.8	$cmd eq "searchable-scrollback:start"
22			and $self->enter;
23	root	1.1
24			()
25			}
26
27			sub msg {
28			my ($self, $msg) = @_;
29
30			$self->{overlay} = $self->overlay (0, -1, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0);
31			$self->{overlay}->set (0, 0, $self->special_encode ($msg));
32			}
33
34			sub enter {
35			my ($self) = @_;
36
37			return if $self->{overlay};
38
39	root	1.8	$self->{view_start} = $self->view_start;
40	root	1.1	$self->{pty_ev_events} = $self->pty_ev_events (urxvt::EVENT_NONE);
41	root	1.13	$self->{row} = $self->nrow - 1;
42	root	1.1
43			$self->enable (
44	root	1.2	key_press => \&key_press,
45	root	1.7	tt_write => \&tt_write,
46	root	1.2	refresh_begin => \&refresh,
47			refresh_end => \&refresh,
48	root	1.1	);
49
50	root	1.8	$self->{manpage_overlay} = $self->overlay (0, -2, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0);
51	root	1.11	$self->{manpage_overlay}->set (0, 0, "scrollback search, see the ${urxvt::RXVTNAME}perl manpage for details");
52	root	1.8
53	root	1.1	$self->idle;
54			}
55
56			sub leave {
57			my ($self) = @_;
58
59	root	1.7	$self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end");
60	root	1.8	$self->pty_ev_events ($self->{pty_ev_events});
61	root	1.1
62	root	1.8	delete $self->{manpage_overlay};
63			delete $self->{overlay};
64			delete $self->{history};
65	root	1.13	delete $self->{search};
66	root	1.1	}
67
68			sub idle {
69			my ($self) = @_;
70
71	root	1.13	$self->msg ("(escape cancels) /$self->{search}█");
72	root	1.1	}
73
74			sub search {
75	root	1.13	my ($self, $dir) = @_;
76	root	1.1
77			delete $self->{found};
78	root	1.13	my $row = $self->{row};
79	root	1.1
80	root	1.7	my $search = $self->special_encode ($self->{search});
81
82	root	1.1	no re 'eval'; # just to be sure
83	root	1.16	if (my $re = eval { qr/$search/ }) {
84			while ($self->nrow > $row && $row > -$self->nsaved) {
85			my $line = $self->line ($row)
86			or last;
87
88			my $text = $line->t;
89			if ($text =~ /$re/g) {
90			do {
91			push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])];
92			} while $text =~ /$re/g;
93
94			$self->{row} = $row;
95	root	1.17	$self->view_start (List::Util::max 0, -$row + ($self->nrow >> 1));
96	root	1.16	$self->want_refresh;
97			last;
98			}
99	root	1.1
100	root	1.16	$row = $dir < 0 ? $line->beg - 1 : $line->end + 1;
101	root	1.1	}
102			}
103
104			$self->scr_bell unless $self->{found};
105			}
106
107	root	1.2	sub refresh {
108			my ($self) = @_;
109
110	root	1.18	return unless $self->{found};
111
112	root	1.15	my $xor = urxvt::RS_RVid \| urxvt::RS_Blink;
113	root	1.13	for (@{ $self->{found} }) {
114			$self->scr_xor_span (@$_, $xor);
115			$xor = urxvt::RS_RVid;
116			}
117	root	1.2
118			()
119			}
120
121			sub key_press {
122	root	1.1	my ($self, $event, $keysym, $string) = @_;
123
124	root	1.13	delete $self->{manpage_overlay};
125
126	root	1.14	if ($keysym == 0xff0d \|\| $keysym == 0xff8d) { # enter
127	root	1.13	if ($self->{found}) {
128			my ($br, $bc, $er, $ec) = @{ $self->{found}[0] };
129			$self->selection_beg ($br, $bc);
130			$self->selection_end ($er, $ec);
131			$self->selection_make ($event->{time});
132			}
133			$self->leave;
134	root	1.14	} elsif ($keysym == 0xff1b) { # escape
135	root	1.13	$self->view_start ($self->{view_start});
136			$self->leave;
137	root	1.14	} elsif ($keysym == 0xff57) { # end
138	root	1.13	$self->{row} = $self->nrow - 1;
139			$self->view_start (0);
140	root	1.14	} elsif ($keysym == 0xff52) { # up
141	root	1.13	$self->{row}-- if $self->{row} > -$self->nsaved;
142			$self->search (-1);
143	root	1.14	} elsif ($keysym == 0xff54) { # down
144	root	1.13	$self->{row}++ if $self->{row} < $self->nrow;
145			$self->search (+1);
146	root	1.14	} elsif ($keysym == 0xff08) { # backspace
147	root	1.13	substr $self->{search}, -1, 1, "";
148			$self->search;
149			$self->idle;
150			} elsif ($string =~ /^[^\x00-\x1f\x80-\xaf]+$/) {
151			return; # pass to tt_write
152	root	1.1	}
153
154			1
155			}
156
157	root	1.7	sub tt_write {
158			my ($self, $data) = @_;
159
160			$self->{search} .= $self->locale_decode ($data);
161	root	1.13	$self->search (-1);
162			$self->idle;
163	root	1.7
164			1
165			}
166
167	root	1.1