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:X_RESOURCE:%:string:activation hotkey keysym |
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6 | |
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7 | =head1 NAME |
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8 | |
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9 | searchable-scrollback<hotkey> - incremental scrollback search (enabled by default) |
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10 | |
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11 | =head1 DESCRIPTION |
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12 | |
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13 | Adds regex search functionality to the scrollback buffer, triggered |
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14 | by a hotkey (default: C<M-s>). While in search mode, normal terminal |
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15 | input/output is suspended and a regex is displayed at the bottom of the |
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16 | screen. |
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17 | |
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18 | Inputting characters appends them to the regex and continues incremental |
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19 | search. C<BackSpace> removes a character from the regex, C<Up> and C<Down> |
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20 | search upwards/downwards in the scrollback buffer, C<End> jumps to the |
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21 | bottom. C<Escape> leaves search mode and returns to the point where search |
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22 | was started, while C<Enter> or C<Return> stay at the current position and |
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23 | additionally stores the first match in the current line into the primary |
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24 | selection if the C<Shift> modifier is active. |
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25 | |
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26 | The regex defaults to "(?i)", resulting in a case-insensitive search. To |
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27 | get a case-sensitive search you can delete this prefix using C<BackSpace> |
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28 | or simply use an uppercase character which removes the "(?i)" prefix. |
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29 | |
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30 | See L<perlre> for more info about perl regular expression syntax. |
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31 | |
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32 | =cut |
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33 | |
5 | sub on_init { |
34 | sub on_init { |
6 | my ($self) = @_; |
35 | my ($self) = @_; |
7 | |
36 | |
8 | my $hotkey = $self->{argv}[0] || "M-s"; |
37 | my $hotkey = $self->{argv}[0] |
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38 | || $self->x_resource ("%") |
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39 | || "M-s"; |
9 | |
40 | |
10 | $self->parse_keysym ($hotkey, "perl:searchable-scrollback:enter") |
41 | $self->parse_keysym ($hotkey, "perl:searchable-scrollback:start") |
11 | or warn "unable to register '$hotkey' as scrollback search enter hotkey\n"; |
42 | or warn "unable to register '$hotkey' as scrollback search start hotkey\n"; |
12 | |
43 | |
13 | () |
44 | () |
14 | } |
45 | } |
15 | |
46 | |
16 | sub on_keyboard_command { |
47 | sub on_user_command { |
17 | my ($self, $cmd) = @_; |
48 | my ($self, $cmd) = @_; |
18 | |
49 | |
19 | if ($cmd eq "searchable-scrollback:enter") { |
50 | $cmd eq "searchable-scrollback:start" |
20 | $self->enter; |
51 | and $self->enter; |
21 | } |
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22 | |
52 | |
23 | () |
53 | () |
24 | } |
54 | } |
25 | |
55 | |
26 | sub msg { |
56 | sub msg { |
… | |
… | |
33 | sub enter { |
63 | sub enter { |
34 | my ($self) = @_; |
64 | my ($self) = @_; |
35 | |
65 | |
36 | return if $self->{overlay}; |
66 | return if $self->{overlay}; |
37 | |
67 | |
38 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EVENT_NONE); |
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39 | $self->{view_start} = $self->view_start; |
68 | $self->{view_start} = $self->view_start; |
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69 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EV_NONE); |
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70 | $self->{row} = $self->nrow - 1; |
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71 | $self->{search} = "(?i)"; |
40 | |
72 | |
41 | $self->enable ( |
73 | $self->enable ( |
42 | key_press => \&key_press, |
74 | key_press => \&key_press, |
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75 | tt_write => \&tt_write, |
43 | refresh_begin => \&refresh, |
76 | refresh_begin => \&refresh, |
44 | refresh_end => \&refresh, |
77 | refresh_end => \&refresh, |
45 | ); |
78 | ); |
46 | |
79 | |
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80 | $self->{manpage_overlay} = $self->overlay (0, -2, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0); |
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81 | $self->{manpage_overlay}->set (0, 0, "scrollback search, see the ${urxvt::RXVTNAME}perl manpage for details"); |
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82 | |
47 | $self->idle; |
83 | $self->idle; |
48 | } |
84 | } |
49 | |
85 | |
50 | sub leave { |
86 | sub leave { |
51 | my ($self) = @_; |
87 | my ($self) = @_; |
52 | |
88 | |
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89 | $self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end"); |
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90 | $self->pty_ev_events ($self->{pty_ev_events}); |
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91 | |
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92 | delete $self->{manpage_overlay}; |
53 | delete $self->{overlay}; |
93 | delete $self->{overlay}; |
54 | |
94 | delete $self->{history}; |
55 | $self->disable ("key_press", "refresh_begin", "refresh_end"); |
95 | delete $self->{search}; |
56 | |
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57 | $self->pty_ev_events ($self->{pty_ev_events}); |
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58 | $self->want_refresh; |
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59 | } |
96 | } |
60 | |
97 | |
61 | sub idle { |
98 | sub idle { |
62 | my ($self) = @_; |
99 | my ($self) = @_; |
63 | |
100 | |
64 | $self->msg ("scrollback search, escape=exit, enter=accept, /=start search, n=next, p=previous"); |
101 | $self->msg ("(escape cancels) /$self->{search}█"); |
65 | |
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66 | delete $self->{in_search}; |
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67 | } |
102 | } |
68 | |
103 | |
69 | sub search { |
104 | sub search { |
70 | my ($self) = @_; |
105 | my ($self, $dir) = @_; |
71 | |
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72 | my $row = -$self->view_start; |
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73 | |
106 | |
74 | delete $self->{found}; |
107 | delete $self->{found}; |
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108 | my $row = $self->{row}; |
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109 | |
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110 | my $search = $self->special_encode ($self->{search}); |
75 | |
111 | |
76 | no re 'eval'; # just to be sure |
112 | no re 'eval'; # just to be sure |
77 | my $re = qr/$self->{search}/; |
113 | if (my $re = eval { qr/$search/ }) { |
78 | |
114 | while ($self->nrow > $row && $row >= $self->top_row) { |
79 | while ($row > -$self->nsaved) { |
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80 | my $line = $self->line ($row) |
115 | my $line = $self->line ($row) |
81 | or last; |
116 | or last; |
82 | |
117 | |
83 | my $text = $line->t; |
118 | my $text = $line->t; |
84 | if ($text =~ /$re/g) { |
119 | if ($text =~ /$re/g) { |
85 | do { |
120 | do { |
86 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])]; |
121 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])]; |
87 | } while $text =~ /$re/g; |
122 | } while $text =~ /$re/g; |
88 | |
123 | |
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124 | $self->{row} = $row; |
89 | $self->view_start (-$row + ($self->nrow >> 1)); |
125 | $self->view_start (List::Util::min 0, $row - ($self->nrow >> 1)); |
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126 | $self->want_refresh; |
90 | last; |
127 | last; |
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128 | } |
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129 | |
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130 | $row = $dir < 0 ? $line->beg - 1 : $line->end + 1; |
91 | } |
131 | } |
92 | |
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93 | $row = $line->beg - 1; |
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94 | } |
132 | } |
95 | |
133 | |
96 | $self->msg ("enter/type/backspace: /$self->{search}_" |
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97 | . ($self->{found} ? " (not found)" : "")); |
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98 | $self->scr_bell unless $self->{found}; |
134 | $self->scr_bell unless $self->{found}; |
99 | } |
135 | } |
100 | |
136 | |
101 | sub refresh { |
137 | sub refresh { |
102 | my ($self) = @_; |
138 | my ($self) = @_; |
103 | |
139 | |
104 | return unless $self->{found}; |
140 | return unless $self->{found}; |
105 | |
141 | |
106 | $self->scr_xor_span (@$_) |
142 | my $xor = urxvt::RS_RVid | urxvt::RS_Blink; |
107 | for @{ $self->{found} }; |
143 | for (@{ $self->{found} }) { |
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144 | $self->scr_xor_span (@$_, $xor); |
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145 | $xor = urxvt::RS_RVid; |
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146 | } |
108 | |
147 | |
109 | () |
148 | () |
110 | } |
149 | } |
111 | |
150 | |
112 | sub key_press { |
151 | sub key_press { |
113 | my ($self, $event, $keysym, $string) = @_; |
152 | my ($self, $event, $keysym, $string) = @_; |
114 | |
153 | |
115 | if (exists $self->{in_search}) { |
154 | delete $self->{manpage_overlay}; |
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155 | |
116 | if ($keysym == 0xff0d || $keysym == 0xff8d) { |
156 | if ($keysym == 0xff0d || $keysym == 0xff8d) { # enter |
117 | $self->idle; |
157 | if ($self->{found} && $event->{state} & urxvt::ShiftMask) { |
118 | } elsif ($keysym == 0xff1b) { |
158 | my ($br, $bc, $er, $ec) = @{ $self->{found}[0] }; |
119 | $self->view_start ($self->{in_search}); |
159 | $self->selection_beg ($br, $bc); |
120 | $self->idle; |
160 | $self->selection_end ($er, $ec); |
121 | } elsif ($keysym == 0xff08) { |
161 | $self->selection_make ($event->{time}); |
122 | substr $self->{search}, -1, 1, ""; |
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123 | |
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124 | $self->search; |
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125 | } elsif ($string ne "") { |
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126 | $self->{search} .= $string; |
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127 | |
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128 | $self->search; |
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129 | } |
162 | } |
130 | } else { |
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131 | if ($keysym == 0xff0d || $keysym == 0xff8d) { |
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132 | # OK |
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133 | $self->leave; |
163 | $self->leave; |
134 | } elsif ($keysym == 0xff1b) { |
164 | } elsif ($keysym == 0xff1b) { # escape |
135 | $self->view_start ($self->{view_start}); |
165 | $self->view_start ($self->{view_start}); |
136 | $self->leave; |
166 | $self->leave; |
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167 | } elsif ($keysym == 0xff57) { # end |
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168 | $self->{row} = $self->nrow - 1; |
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169 | $self->view_start (0); |
137 | } elsif ($keysym == 0xff52) { |
170 | } elsif ($keysym == 0xff52) { # up |
138 | $self->view_start ($self->view_start + 1); |
171 | $self->{row}-- if $self->{row} > $self->top_row; |
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172 | $self->search (-1); |
139 | } elsif ($keysym == 0xff54) { |
173 | } elsif ($keysym == 0xff54) { # down |
140 | $self->view_start ($self->view_start - 1); |
174 | $self->{row}++ if $self->{row} < $self->nrow; |
141 | } elsif ($string eq "/") { |
175 | $self->search (+1); |
142 | $self->{in_search} = $self->view_start; |
176 | } elsif ($keysym == 0xff08) { # backspace |
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177 | substr $self->{search}, -1, 1, ""; |
143 | $self->search; |
178 | $self->search; |
144 | } elsif ($string eq "n") { |
179 | $self->idle; |
145 | $self->search; |
180 | } elsif ($string !~ /[\x00-\x1f\x80-\xaf]/) { |
146 | } elsif ($string eq "p") { |
181 | return; # pass to tt_write |
147 | } elsif ($string ne "") { |
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148 | $self->scr_bell; |
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149 | } |
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150 | } |
182 | } |
151 | |
183 | |
152 | 1 |
184 | 1 |
153 | } |
185 | } |
154 | |
186 | |
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187 | sub tt_write { |
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188 | my ($self, $data) = @_; |
155 | |
189 | |
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190 | $self->{search} .= $self->locale_decode ($data); |
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191 | |
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192 | $self->{search} =~ s/^\(\?i\)// |
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193 | if $self->{search} =~ /^\(.*[[:upper:]]/; |
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194 | |
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195 | $self->search (-1); |
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196 | $self->idle; |
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197 | |
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198 | 1 |
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199 | } |
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200 | |
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201 | |