| 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] || "M-s"; |
39 | my $hotkey = $self->{argv}[0] |
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40 | || $self->x_resource ("%") |
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41 | || return; |
| 9 | |
42 | |
| 10 | $self->parse_keysym ($hotkey, "perl:searchable-scrollback:start") |
43 | $self->bind_action ($hotkey, "searchable-scrollback:start") # ugh |
| 11 | 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"; |
| 12 | |
45 | |
| 13 | () |
46 | () |
| 14 | } |
47 | } |
| 15 | |
48 | |
| 16 | sub on_keyboard_command { |
49 | sub on_user_command { |
| 17 | my ($self, $cmd) = @_; |
50 | my ($self, $cmd) = @_; |
| 18 | |
51 | |
| 19 | $cmd eq "searchable-scrollback:start" |
52 | $cmd eq "searchable-scrollback:start" |
| 20 | and $self->enter; |
53 | and $self->enter; |
| 21 | |
54 | |
| 22 | () |
55 | () |
| 23 | } |
56 | } |
| 24 | |
57 | |
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58 | sub on_action { |
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59 | my ($self, $action) = @_; |
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60 | |
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61 | $action eq "start" |
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62 | and $self->enter; |
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63 | |
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64 | () |
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65 | } |
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66 | |
| 25 | sub msg { |
67 | sub msg { |
| 26 | my ($self, $msg) = @_; |
68 | my ($self, $msg) = @_; |
| 27 | |
69 | |
| 28 | $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); |
| 29 | $self->{overlay}->set (0, 0, $self->special_encode ($msg)); |
71 | $self->{overlay}->set (0, 0, $self->special_encode ($msg)); |
| … | |
… | |
| 32 | sub enter { |
74 | sub enter { |
| 33 | my ($self) = @_; |
75 | my ($self) = @_; |
| 34 | |
76 | |
| 35 | return if $self->{overlay}; |
77 | return if $self->{overlay}; |
| 36 | |
78 | |
| 37 | $self->{history} = []; |
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| 38 | $self->{view_start} = $self->view_start; |
79 | $self->{view_start} = $self->view_start; |
| 39 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EVENT_NONE); |
80 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EV_NONE); |
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81 | $self->{row} = $self->nrow - 1; |
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82 | $self->{search} = "(?i)"; |
| 40 | |
83 | |
| 41 | $self->enable ( |
84 | $self->enable ( |
| 42 | key_press => \&key_press, |
85 | key_press => \&key_press, |
| 43 | tt_write => \&tt_write, |
86 | tt_write => \&tt_write, |
| 44 | refresh_begin => \&refresh, |
87 | refresh_begin => \&refresh, |
| 45 | refresh_end => \&refresh, |
88 | refresh_end => \&refresh, |
| 46 | ); |
89 | ); |
| 47 | |
90 | |
| 48 | $self->{manpage_overlay} = $self->overlay (0, -2, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0); |
91 | $self->{manpage_overlay} = $self->overlay (0, -2, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0); |
| 49 | $self->{manpage_overlay}->set (0, 0, "scrollback search, see man ${urxvt::RXVTNAME}perl for details"); |
92 | $self->{manpage_overlay}->set (0, 0, "scrollback search, see the ${urxvt::RXVTNAME}perl manpage for details"); |
| 50 | |
93 | |
| 51 | $self->idle; |
94 | $self->idle; |
| 52 | } |
95 | } |
| 53 | |
96 | |
| 54 | sub leave { |
97 | sub leave { |
| … | |
… | |
| 57 | $self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end"); |
100 | $self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end"); |
| 58 | $self->pty_ev_events ($self->{pty_ev_events}); |
101 | $self->pty_ev_events ($self->{pty_ev_events}); |
| 59 | |
102 | |
| 60 | delete $self->{manpage_overlay}; |
103 | delete $self->{manpage_overlay}; |
| 61 | delete $self->{overlay}; |
104 | delete $self->{overlay}; |
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105 | delete $self->{search}; |
| 62 | delete $self->{history}; |
106 | delete $self->{found}; |
| 63 | } |
107 | } |
| 64 | |
108 | |
| 65 | sub idle { |
109 | sub idle { |
| 66 | my ($self) = @_; |
110 | my ($self) = @_; |
| 67 | |
111 | |
| 68 | $self->msg ("escape=exit, enter=accept, /=start search, n=next, p=previous, G=bottom"); |
112 | $self->msg ("(escape cancels) /$self->{search}█"); |
| 69 | |
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| 70 | delete $self->{in_search}; |
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| 71 | } |
113 | } |
| 72 | |
114 | |
| 73 | sub search { |
115 | sub search { |
| 74 | my ($self, $offset) = @_; |
116 | my ($self, $dir, $row) = @_; |
| 75 | |
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| 76 | my $row = -$self->view_start + ($self->nrow >> 1) + $offset; |
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| 77 | |
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| 78 | delete $self->{found}; |
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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 | my $re = qr/$search/; |
121 | if (my $re = eval { qr/$search/ }) { |
| 84 | |
122 | while ($self->nrow > $row && $row >= $self->top_row) { |
| 85 | while ($row > -$self->nsaved) { |
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| 86 | my $line = $self->line ($row) |
123 | my $line = $self->line ($row) |
| 87 | or last; |
124 | or last; |
| 88 | |
125 | |
| 89 | my $text = $line->t; |
126 | my $text = $line->t; |
| 90 | if ($text =~ /$re/g) { |
127 | if ($text =~ /$re/g) { |
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128 | delete $self->{found}; |
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129 | |
| 91 | do { |
130 | do { |
| 92 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])]; |
131 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])]; |
| 93 | } while $text =~ /$re/g; |
132 | } while $text =~ /$re/g; |
| 94 | |
133 | |
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134 | $self->{row} = $row; |
| 95 | $self->view_start (-$row + ($self->nrow >> 1)); |
135 | $self->view_start (List::Util::min 0, $row - ($self->nrow >> 1)); |
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136 | $self->want_refresh; |
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137 | return; |
| 96 | last; |
138 | } |
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139 | |
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140 | $row = $dir < 0 ? $line->beg - 1 : $line->end + 1; |
| 97 | } |
141 | } |
| 98 | |
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| 99 | $row = $line->beg - 1; |
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| 100 | } |
142 | } |
| 101 | |
143 | |
| 102 | $self->msg ("enter/type/backspace: /$self->{search}_" |
144 | $self->scr_bell; |
| 103 | . ($self->{found} ? "" : " (not found)")); |
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| 104 | $self->scr_bell unless $self->{found}; |
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| 105 | } |
145 | } |
| 106 | |
146 | |
| 107 | sub refresh { |
147 | sub refresh { |
| 108 | my ($self) = @_; |
148 | my ($self) = @_; |
| 109 | |
149 | |
| 110 | return unless $self->{found}; |
150 | return unless $self->{found}; |
| 111 | |
151 | |
| 112 | $self->scr_xor_span (@$_, urxvt::SET_FGCOLOR (urxvt::RS_RVid, 15)) |
152 | my $xor = urxvt::RS_RVid | urxvt::RS_Blink; |
| 113 | for @{ $self->{found} }; |
153 | for (@{ $self->{found} }) { |
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154 | $self->scr_xor_span (@$_, $xor); |
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155 | $xor = urxvt::RS_RVid; |
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156 | } |
| 114 | |
157 | |
| 115 | () |
158 | () |
| 116 | } |
159 | } |
| 117 | |
160 | |
| 118 | sub key_press { |
161 | sub key_press { |
| 119 | my ($self, $event, $keysym, $string) = @_; |
162 | my ($self, $event, $keysym, $string) = @_; |
| 120 | |
163 | |
| 121 | if (exists $self->{in_search}) { |
164 | delete $self->{manpage_overlay}; |
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165 | |
| 122 | if ($keysym == 0xff0d || $keysym == 0xff8d) { |
166 | if ($keysym == 0xff0d || $keysym == 0xff8d) { # enter |
| 123 | $self->idle; |
167 | if ($self->{found} && $event->{state} & urxvt::ShiftMask) { |
| 124 | } elsif ($keysym == 0xff1b) { |
168 | my ($br, $bc, $er, $ec) = @{ $self->{found}[0] }; |
| 125 | $self->view_start ($self->{in_search}); |
169 | $self->selection_beg ($br, $bc); |
| 126 | $self->idle; |
170 | $self->selection_end ($er, $ec); |
| 127 | } elsif ($keysym == 0xff08) { |
171 | $self->selection_make ($event->{time}); |
| 128 | substr $self->{search}, -1, 1, ""; |
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| 129 | $self->search; |
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| 130 | } elsif ($string ne "") { |
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| 131 | return; |
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| 132 | } |
172 | } |
| 133 | |
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| 134 | } else { |
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| 135 | if ($keysym == 0xff0d || $keysym == 0xff8d) { |
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| 136 | # TODO: set selection |
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| 137 | $self->leave; |
173 | $self->leave; |
| 138 | } elsif ($keysym == 0xff1b) { |
174 | } elsif ($keysym == 0xff1b) { # escape |
| 139 | $self->view_start ($self->{view_start}); |
175 | $self->view_start ($self->{view_start}); |
| 140 | $self->leave; |
176 | $self->leave; |
| 141 | } elsif ($keysym == 0xff52) { |
177 | } elsif ($keysym == 0xff57) { # end |
| 142 | $self->view_start ($self->view_start + 1); |
178 | $self->{row} = $self->nrow - 1; |
| 143 | } elsif ($keysym == 0xff54) { |
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| 144 | $self->view_start ($self->view_start - 1); |
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| 145 | } elsif ($string eq "/") { |
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| 146 | delete $self->{manpage_overlay}; |
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| 147 | $self->{in_search} = $self->view_start; |
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| 148 | $self->search; |
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| 149 | } elsif ($string eq "G") { |
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| 150 | $self->{history} = []; |
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| 151 | $self->view_start (0); |
179 | $self->view_start (0); |
| 152 | } elsif ($string eq "n") { |
180 | } elsif ($keysym == 0xff52) { # up |
| 153 | if ($self->{found} && @{ $self->{found} }) { |
181 | my $line = $self->line ($self->{row}); |
| 154 | push @{ $self->{history} }, [$self->view_start, $self->{found}]; |
182 | $self->search (-1, $line->beg - 1) |
| 155 | $self->search (-1); |
183 | if $line->beg > $self->top_row; |
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184 | } elsif ($keysym == 0xff54) { # down |
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185 | my $line = $self->line ($self->{row}); |
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186 | $self->search (+1, $line->end + 1) |
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187 | if $line->end < $self->nrow; |
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188 | } elsif ($keysym == 0xff08) { # backspace |
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189 | substr $self->{search}, -1, 1, ""; |
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190 | $self->search (+1, $self->{row}); |
| 156 | $self->idle; |
191 | $self->idle; |
| 157 | } |
192 | } elsif ($string !~ /[\x00-\x1f\x80-\xaf]/) { |
| 158 | } elsif ($string eq "p" or $string eq "N") { |
193 | return; # pass to tt_write |
| 159 | if (my $prev = pop @{ $self->{history} }) { |
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| 160 | $self->view_start ($prev->[0]); |
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| 161 | $self->{found} = $prev->[1]; |
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| 162 | $self->want_refresh; |
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| 163 | } |
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| 164 | } elsif ($string ne "") { |
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| 165 | $self->scr_bell; |
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| 166 | } |
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| 167 | } |
194 | } |
| 168 | |
195 | |
| 169 | 1 |
196 | 1 |
| 170 | } |
197 | } |
| 171 | |
198 | |
| 172 | sub tt_write { |
199 | sub tt_write { |
| 173 | my ($self, $data) = @_; |
200 | my ($self, $data) = @_; |
| 174 | |
201 | |
| 175 | $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}; |
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208 | $self->search (-1, $self->{row}); |
| 176 | $self->search; |
209 | $self->idle; |
| 177 | |
210 | |
| 178 | 1 |
211 | 1 |
| 179 | } |
212 | } |
| 180 | |
213 | |
| 181 | |
214 | |
