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:start") |
41 | $self->parse_keysym ($hotkey, "perl:searchable-scrollback:start") |
11 | or warn "unable to register '$hotkey' as scrollback search start hotkey\n"; |
42 | or warn "unable to register '$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 | $cmd eq "searchable-scrollback:start" |
50 | $cmd eq "searchable-scrollback:start" |
20 | and $self->enter; |
51 | and $self->enter; |
21 | |
52 | |
… | |
… | |
32 | sub enter { |
63 | sub enter { |
33 | my ($self) = @_; |
64 | my ($self) = @_; |
34 | |
65 | |
35 | return if $self->{overlay}; |
66 | return if $self->{overlay}; |
36 | |
67 | |
37 | $self->{history} = []; |
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38 | $self->{view_start} = $self->view_start; |
68 | $self->{view_start} = $self->view_start; |
39 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EVENT_NONE); |
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, |
43 | tt_write => \&tt_write, |
75 | tt_write => \&tt_write, |
44 | refresh_begin => \&refresh, |
76 | refresh_begin => \&refresh, |
… | |
… | |
58 | $self->pty_ev_events ($self->{pty_ev_events}); |
90 | $self->pty_ev_events ($self->{pty_ev_events}); |
59 | |
91 | |
60 | delete $self->{manpage_overlay}; |
92 | delete $self->{manpage_overlay}; |
61 | delete $self->{overlay}; |
93 | delete $self->{overlay}; |
62 | delete $self->{history}; |
94 | delete $self->{history}; |
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95 | delete $self->{search}; |
63 | } |
96 | } |
64 | |
97 | |
65 | sub idle { |
98 | sub idle { |
66 | my ($self) = @_; |
99 | my ($self) = @_; |
67 | |
100 | |
68 | $self->msg ("escape=exit, enter=accept, /=start search, n=next, p=previous, G=bottom"); |
101 | $self->msg ("(escape cancels) /$self->{search}█"); |
69 | |
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70 | delete $self->{in_search}; |
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71 | } |
102 | } |
72 | |
103 | |
73 | sub search { |
104 | sub search { |
74 | my ($self, $offset) = @_; |
105 | my ($self, $dir) = @_; |
75 | |
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76 | my $row = -$self->view_start + ($self->nrow >> 1) + $offset; |
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77 | |
106 | |
78 | delete $self->{found}; |
107 | delete $self->{found}; |
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108 | my $row = $self->{row}; |
79 | |
109 | |
80 | my $search = $self->special_encode ($self->{search}); |
110 | my $search = $self->special_encode ($self->{search}); |
81 | |
111 | |
82 | no re 'eval'; # just to be sure |
112 | no re 'eval'; # just to be sure |
83 | my $re = qr/$search/; |
113 | if (my $re = eval { qr/$search/ }) { |
84 | |
114 | while ($self->nrow > $row && $row >= $self->top_row) { |
85 | while ($row > -$self->nsaved) { |
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86 | my $line = $self->line ($row) |
115 | my $line = $self->line ($row) |
87 | or last; |
116 | or last; |
88 | |
117 | |
89 | my $text = $line->t; |
118 | my $text = $line->t; |
90 | if ($text =~ /$re/g) { |
119 | if ($text =~ /$re/g) { |
91 | do { |
120 | do { |
92 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])]; |
121 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])]; |
93 | } while $text =~ /$re/g; |
122 | } while $text =~ /$re/g; |
94 | |
123 | |
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124 | $self->{row} = $row; |
95 | $self->view_start (-$row + ($self->nrow >> 1)); |
125 | $self->view_start (List::Util::min 0, $row - ($self->nrow >> 1)); |
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126 | $self->want_refresh; |
96 | 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; |
97 | } |
131 | } |
98 | |
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99 | $row = $line->beg - 1; |
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100 | } |
132 | } |
101 | |
133 | |
102 | $self->msg ("enter/type/backspace: /$self->{search}_" |
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103 | . ($self->{found} ? "" : " (not found)")); |
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104 | $self->scr_bell unless $self->{found}; |
134 | $self->scr_bell unless $self->{found}; |
105 | } |
135 | } |
106 | |
136 | |
107 | sub refresh { |
137 | sub refresh { |
108 | my ($self) = @_; |
138 | my ($self) = @_; |
109 | |
139 | |
110 | return unless $self->{found}; |
140 | return unless $self->{found}; |
111 | |
141 | |
112 | $self->scr_xor_span (@$_, urxvt::SET_FGCOLOR (urxvt::RS_RVid, 15)) |
142 | my $xor = urxvt::RS_RVid | urxvt::RS_Blink; |
113 | for @{ $self->{found} }; |
143 | for (@{ $self->{found} }) { |
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144 | $self->scr_xor_span (@$_, $xor); |
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145 | $xor = urxvt::RS_RVid; |
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146 | } |
114 | |
147 | |
115 | () |
148 | () |
116 | } |
149 | } |
117 | |
150 | |
118 | sub key_press { |
151 | sub key_press { |
119 | my ($self, $event, $keysym, $string) = @_; |
152 | my ($self, $event, $keysym, $string) = @_; |
120 | |
153 | |
121 | if (exists $self->{in_search}) { |
154 | delete $self->{manpage_overlay}; |
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155 | |
122 | if ($keysym == 0xff0d || $keysym == 0xff8d) { |
156 | if ($keysym == 0xff0d || $keysym == 0xff8d) { # enter |
123 | $self->idle; |
157 | if ($self->{found} && $event->{state} & urxvt::ShiftMask) { |
124 | } elsif ($keysym == 0xff1b) { |
158 | my ($br, $bc, $er, $ec) = @{ $self->{found}[0] }; |
125 | $self->view_start ($self->{in_search}); |
159 | $self->selection_beg ($br, $bc); |
126 | $self->idle; |
160 | $self->selection_end ($er, $ec); |
127 | } elsif ($keysym == 0xff08) { |
161 | $self->selection_make ($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 | } |
162 | } |
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; |
163 | $self->leave; |
138 | } elsif ($keysym == 0xff1b) { |
164 | } elsif ($keysym == 0xff1b) { # escape |
139 | $self->view_start ($self->{view_start}); |
165 | $self->view_start ($self->{view_start}); |
140 | $self->leave; |
166 | $self->leave; |
141 | } elsif ($keysym == 0xff52) { |
167 | } elsif ($keysym == 0xff57) { # end |
142 | $self->view_start ($self->view_start + 1); |
168 | $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); |
169 | $self->view_start (0); |
152 | } elsif ($string eq "n") { |
170 | } elsif ($keysym == 0xff52) { # up |
153 | if ($self->{found} && @{ $self->{found} }) { |
171 | $self->{row}-- if $self->{row} > $self->top_row; |
154 | push @{ $self->{history} }, [$self->view_start, $self->{found}]; |
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155 | $self->search (-1); |
172 | $self->search (-1); |
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173 | } elsif ($keysym == 0xff54) { # down |
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174 | $self->{row}++ if $self->{row} < $self->nrow; |
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175 | $self->search (+1); |
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176 | } elsif ($keysym == 0xff08) { # backspace |
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177 | substr $self->{search}, -1, 1, ""; |
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178 | $self->search; |
156 | $self->idle; |
179 | $self->idle; |
157 | } |
180 | } elsif ($string !~ /[\x00-\x1f\x80-\xaf]/) { |
158 | } elsif ($string eq "p" or $string eq "N") { |
181 | 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 | $self->scr_bell; |
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166 | } |
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167 | } |
182 | } |
168 | |
183 | |
169 | 1 |
184 | 1 |
170 | } |
185 | } |
171 | |
186 | |
172 | sub tt_write { |
187 | sub tt_write { |
173 | my ($self, $data) = @_; |
188 | my ($self, $data) = @_; |
174 | |
189 | |
175 | $self->{search} .= $self->locale_decode ($data); |
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 | |
176 | $self->search; |
195 | $self->search (-1); |
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196 | $self->idle; |
177 | |
197 | |
178 | 1 |
198 | 1 |
179 | } |
199 | } |
180 | |
200 | |
181 | |
201 | |