1 | #! perl |
1 | #! perl |
2 | |
2 | |
3 | # this extension implements scrollback buffer search |
3 | # this extension implements scrollback buffer search |
4 | |
4 | |
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5 | #:META:RESOURCE:%:string:activation hotkey keysym |
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6 | #:META:BINDING:M-s:start |
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7 | |
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8 | =head1 NAME |
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9 | |
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10 | searchable-scrollback - incremental scrollback search (enabled by default) |
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11 | |
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12 | =head1 DESCRIPTION |
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13 | |
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14 | Adds regex search functionality to the scrollback buffer, triggered by |
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15 | the C<searchable-scrollback:start> action (bound to C<M-s> by |
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16 | default). While in search mode, normal terminal input/output is |
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17 | suspended and a regex is displayed at the bottom of the screen. |
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18 | |
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19 | Inputting characters appends them to the regex and continues incremental |
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20 | search. C<BackSpace> removes a character from the regex, C<Up> and C<Down> |
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21 | search upwards/downwards in the scrollback buffer, C<End> jumps to the |
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22 | bottom. C<Escape> leaves search mode and returns to the point where search |
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23 | was started, while C<Enter> or C<Return> stay at the current position and |
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24 | additionally stores the first match in the current line into the primary |
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25 | selection if the C<Shift> modifier is active. |
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26 | |
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27 | The regex defaults to "(?i)", resulting in a case-insensitive search. To |
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28 | get a case-sensitive search you can delete this prefix using C<BackSpace> |
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29 | or simply use an uppercase character which removes the "(?i)" prefix. |
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30 | |
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31 | See L<perlre> for more info about perl regular expression syntax. |
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32 | |
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33 | =cut |
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34 | |
5 | sub on_init { |
35 | sub on_init { |
6 | my ($self) = @_; |
36 | my ($self) = @_; |
7 | |
37 | |
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38 | # only for backwards compatibility |
8 | my $hotkey = $self->{argv}[0] |
39 | my $hotkey = $self->{argv}[0] |
9 | || $self->x_resource ("searchable-scrollback") |
40 | || $self->x_resource ("%") |
10 | || "M-s"; |
41 | || return; |
11 | |
42 | |
12 | $self->parse_keysym ($hotkey, "perl:searchable-scrollback:start") |
43 | $self->bind_action ($hotkey, "searchable-scrollback:start") # ugh |
13 | or warn "unable to register '$hotkey' as scrollback search start hotkey\n"; |
44 | or warn "unable to register '$hotkey' as scrollback search start hotkey\n"; |
14 | |
45 | |
15 | () |
46 | () |
16 | } |
47 | } |
17 | |
48 | |
18 | sub on_keyboard_command { |
49 | sub on_user_command { |
19 | my ($self, $cmd) = @_; |
50 | my ($self, $cmd) = @_; |
20 | |
51 | |
21 | $cmd eq "searchable-scrollback:start" |
52 | $cmd eq "searchable-scrollback:start" |
22 | and $self->enter; |
53 | and $self->enter; |
23 | |
54 | |
24 | () |
55 | () |
25 | } |
56 | } |
26 | |
57 | |
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58 | sub on_action { |
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59 | my ($self, $action) = @_; |
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60 | |
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61 | $action eq "start" |
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62 | and $self->enter; |
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63 | |
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64 | () |
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65 | } |
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66 | |
27 | sub msg { |
67 | sub msg { |
28 | my ($self, $msg) = @_; |
68 | my ($self, $msg) = @_; |
29 | |
69 | |
30 | $self->{overlay} = $self->overlay (0, -1, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0); |
70 | $self->{overlay} = $self->overlay (0, -1, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0); |
31 | $self->{overlay}->set (0, 0, $self->special_encode ($msg)); |
71 | $self->{overlay}->set (0, 0, $self->special_encode ($msg)); |
… | |
… | |
35 | my ($self) = @_; |
75 | my ($self) = @_; |
36 | |
76 | |
37 | return if $self->{overlay}; |
77 | return if $self->{overlay}; |
38 | |
78 | |
39 | $self->{view_start} = $self->view_start; |
79 | $self->{view_start} = $self->view_start; |
40 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EVENT_NONE); |
80 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EV_NONE); |
41 | $self->{row} = $self->nrow - 1; |
81 | $self->{row} = $self->nrow - 1; |
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82 | $self->{search} = "(?i)"; |
42 | |
83 | |
43 | $self->enable ( |
84 | $self->enable ( |
44 | key_press => \&key_press, |
85 | key_press => \&key_press, |
45 | tt_write => \&tt_write, |
86 | tt_write => \&tt_write, |
46 | refresh_begin => \&refresh, |
87 | refresh_begin => \&refresh, |
… | |
… | |
59 | $self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end"); |
100 | $self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end"); |
60 | $self->pty_ev_events ($self->{pty_ev_events}); |
101 | $self->pty_ev_events ($self->{pty_ev_events}); |
61 | |
102 | |
62 | delete $self->{manpage_overlay}; |
103 | delete $self->{manpage_overlay}; |
63 | delete $self->{overlay}; |
104 | delete $self->{overlay}; |
64 | delete $self->{history}; |
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65 | delete $self->{search}; |
105 | delete $self->{search}; |
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106 | delete $self->{found}; |
66 | } |
107 | } |
67 | |
108 | |
68 | sub idle { |
109 | sub idle { |
69 | my ($self) = @_; |
110 | my ($self) = @_; |
70 | |
111 | |
71 | $self->msg ("(escape cancels) /$self->{search}█"); |
112 | $self->msg ("(escape cancels) /$self->{search}█"); |
72 | } |
113 | } |
73 | |
114 | |
74 | sub search { |
115 | sub search { |
75 | my ($self, $dir) = @_; |
116 | my ($self, $dir, $row) = @_; |
76 | |
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77 | delete $self->{found}; |
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78 | my $row = $self->{row}; |
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79 | |
117 | |
80 | my $search = $self->special_encode ($self->{search}); |
118 | my $search = $self->special_encode ($self->{search}); |
81 | |
119 | |
82 | no re 'eval'; # just to be sure |
120 | no re 'eval'; # just to be sure |
83 | if (my $re = eval { qr/$search/ }) { |
121 | if (my $re = eval { qr/$search/ }) { |
84 | while ($self->nrow > $row && $row > -$self->nsaved) { |
122 | while ($self->nrow > $row && $row >= $self->top_row) { |
85 | my $line = $self->line ($row) |
123 | my $line = $self->line ($row) |
86 | or last; |
124 | or last; |
87 | |
125 | |
88 | my $text = $line->t; |
126 | my $text = $line->t; |
89 | if ($text =~ /$re/g) { |
127 | if ($text =~ /$re/g) { |
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128 | delete $self->{found}; |
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129 | |
90 | do { |
130 | do { |
91 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])]; |
131 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])]; |
92 | } while $text =~ /$re/g; |
132 | } while $text =~ /$re/g; |
93 | |
133 | |
94 | $self->{row} = $row; |
134 | $self->{row} = $row; |
95 | $self->view_start (List::Util::max 0, -$row + ($self->nrow >> 1)); |
135 | $self->view_start (List::Util::min 0, $row - ($self->nrow >> 1)); |
96 | $self->want_refresh; |
136 | $self->want_refresh; |
97 | last; |
137 | return; |
98 | } |
138 | } |
99 | |
139 | |
100 | $row = $dir < 0 ? $line->beg - 1 : $line->end + 1; |
140 | $row = $dir < 0 ? $line->beg - 1 : $line->end + 1; |
101 | } |
141 | } |
102 | } |
142 | } |
103 | |
143 | |
104 | $self->scr_bell unless $self->{found}; |
144 | $self->scr_bell; |
105 | } |
145 | } |
106 | |
146 | |
107 | sub refresh { |
147 | sub refresh { |
108 | my ($self) = @_; |
148 | my ($self) = @_; |
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149 | |
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150 | return unless $self->{found}; |
109 | |
151 | |
110 | my $xor = urxvt::RS_RVid | urxvt::RS_Blink; |
152 | my $xor = urxvt::RS_RVid | urxvt::RS_Blink; |
111 | for (@{ $self->{found} }) { |
153 | for (@{ $self->{found} }) { |
112 | $self->scr_xor_span (@$_, $xor); |
154 | $self->scr_xor_span (@$_, $xor); |
113 | $xor = urxvt::RS_RVid; |
155 | $xor = urxvt::RS_RVid; |
… | |
… | |
120 | my ($self, $event, $keysym, $string) = @_; |
162 | my ($self, $event, $keysym, $string) = @_; |
121 | |
163 | |
122 | delete $self->{manpage_overlay}; |
164 | delete $self->{manpage_overlay}; |
123 | |
165 | |
124 | if ($keysym == 0xff0d || $keysym == 0xff8d) { # enter |
166 | if ($keysym == 0xff0d || $keysym == 0xff8d) { # enter |
125 | if ($self->{found}) { |
167 | if ($self->{found} && $event->{state} & urxvt::ShiftMask) { |
126 | my ($br, $bc, $er, $ec) = @{ $self->{found}[0] }; |
168 | my ($br, $bc, $er, $ec) = @{ $self->{found}[0] }; |
127 | $self->selection_beg ($br, $bc); |
169 | $self->selection_beg ($br, $bc); |
128 | $self->selection_end ($er, $ec); |
170 | $self->selection_end ($er, $ec); |
129 | $self->selection_make ($event->{time}); |
171 | $self->selection_make ($event->{time}); |
130 | } |
172 | } |
… | |
… | |
134 | $self->leave; |
176 | $self->leave; |
135 | } elsif ($keysym == 0xff57) { # end |
177 | } elsif ($keysym == 0xff57) { # end |
136 | $self->{row} = $self->nrow - 1; |
178 | $self->{row} = $self->nrow - 1; |
137 | $self->view_start (0); |
179 | $self->view_start (0); |
138 | } elsif ($keysym == 0xff52) { # up |
180 | } elsif ($keysym == 0xff52) { # up |
139 | $self->{row}-- if $self->{row} > -$self->nsaved; |
181 | my $line = $self->line ($self->{row}); |
140 | $self->search (-1); |
182 | $self->search (-1, $line->beg - 1) |
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183 | if $line->beg > $self->top_row; |
141 | } elsif ($keysym == 0xff54) { # down |
184 | } elsif ($keysym == 0xff54) { # down |
142 | $self->{row}++ if $self->{row} < $self->nrow; |
185 | my $line = $self->line ($self->{row}); |
143 | $self->search (+1); |
186 | $self->search (+1, $line->end + 1) |
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187 | if $line->end < $self->nrow; |
144 | } elsif ($keysym == 0xff08) { # backspace |
188 | } elsif ($keysym == 0xff08) { # backspace |
145 | substr $self->{search}, -1, 1, ""; |
189 | substr $self->{search}, -1, 1, ""; |
146 | $self->search; |
190 | $self->search (+1, $self->{row}); |
147 | $self->idle; |
191 | $self->idle; |
148 | } elsif ($string =~ /^[^\x00-\x1f\x80-\xaf]+$/) { |
192 | } elsif ($string !~ /[\x00-\x1f\x80-\xaf]/) { |
149 | return; # pass to tt_write |
193 | return; # pass to tt_write |
150 | } |
194 | } |
151 | |
195 | |
152 | 1 |
196 | 1 |
153 | } |
197 | } |
154 | |
198 | |
155 | sub tt_write { |
199 | sub tt_write { |
156 | my ($self, $data) = @_; |
200 | my ($self, $data) = @_; |
157 | |
201 | |
158 | $self->{search} .= $self->locale_decode ($data); |
202 | $self->{search} .= $self->locale_decode ($data); |
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203 | |
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204 | $self->{search} =~ s/^\(\?i\)// |
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205 | if $self->{search} =~ /^\(.*[[:upper:]]/; |
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206 | |
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207 | delete $self->{found}; |
159 | $self->search (-1); |
208 | $self->search (-1, $self->{row}); |
160 | $self->idle; |
209 | $self->idle; |
161 | |
210 | |
162 | 1 |
211 | 1 |
163 | } |
212 | } |
164 | |
213 | |