| 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:enter") |
43 | $self->bind_action ($hotkey, "searchable-scrollback:start") # ugh |
| 11 | or warn "unable to register '$hotkey' as scrollback search enter hotkey\n"; |
44 | or warn "unable to register '$hotkey' as scrollback search start hotkey\n"; |
| 12 | |
45 | |
| 13 | () |
46 | () |
| 14 | } |
47 | } |
| 15 | |
48 | |
| 16 | sub on_keyboard_command { |
49 | sub on_action { |
| 17 | my ($self, $cmd) = @_; |
50 | my ($self, $action) = @_; |
| 18 | |
51 | |
| 19 | if ($cmd eq "searchable-scrollback:enter") { |
52 | $action eq "start" |
| 20 | $self->enter; |
53 | and $self->enter; |
| 21 | } |
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| 22 | |
54 | |
| 23 | () |
55 | () |
| 24 | } |
56 | } |
| 25 | |
57 | |
| 26 | sub msg { |
58 | sub msg { |
| … | |
… | |
| 33 | sub enter { |
65 | sub enter { |
| 34 | my ($self) = @_; |
66 | my ($self) = @_; |
| 35 | |
67 | |
| 36 | return if $self->{overlay}; |
68 | return if $self->{overlay}; |
| 37 | |
69 | |
| 38 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EVENT_NONE); |
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| 39 | $self->{view_start} = $self->view_start; |
70 | $self->{view_start} = $self->view_start; |
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71 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EV_NONE); |
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72 | $self->{row} = $self->nrow - 1; |
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73 | $self->{search} = "(?i)"; |
| 40 | |
74 | |
| 41 | $self->enable ( |
75 | $self->enable ( |
| 42 | key_press => \&key_press, |
76 | key_press => \&key_press, |
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77 | tt_write => \&tt_write, |
| 43 | refresh_begin => \&refresh, |
78 | refresh_begin => \&refresh, |
| 44 | refresh_end => \&refresh, |
79 | refresh_end => \&refresh, |
| 45 | ); |
80 | ); |
| 46 | |
81 | |
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82 | $self->{manpage_overlay} = $self->overlay (0, -2, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0); |
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83 | $self->{manpage_overlay}->set (0, 0, "scrollback search, see the ${urxvt::RXVTNAME}perl manpage for details"); |
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84 | |
| 47 | $self->idle; |
85 | $self->idle; |
| 48 | } |
86 | } |
| 49 | |
87 | |
| 50 | sub leave { |
88 | sub leave { |
| 51 | my ($self) = @_; |
89 | my ($self) = @_; |
| 52 | |
90 | |
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91 | $self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end"); |
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92 | $self->pty_ev_events ($self->{pty_ev_events}); |
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93 | |
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94 | delete $self->{manpage_overlay}; |
| 53 | delete $self->{overlay}; |
95 | delete $self->{overlay}; |
| 54 | |
96 | delete $self->{search}; |
| 55 | $self->disable ("key_press", "refresh_begin", "refresh_end"); |
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| 56 | |
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| 57 | $self->pty_ev_events ($self->{pty_ev_events}); |
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| 58 | $self->want_refresh; |
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| 59 | } |
97 | } |
| 60 | |
98 | |
| 61 | sub idle { |
99 | sub idle { |
| 62 | my ($self) = @_; |
100 | my ($self) = @_; |
| 63 | |
101 | |
| 64 | $self->msg ("scrollback search, escape=exit, enter=accept, /=start search, n=next, p=previous"); |
102 | $self->msg ("(escape cancels) /$self->{search}█"); |
| 65 | |
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| 66 | delete $self->{in_search}; |
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| 67 | } |
103 | } |
| 68 | |
104 | |
| 69 | sub search { |
105 | sub search { |
| 70 | my ($self) = @_; |
106 | my ($self, $dir, $row) = @_; |
| 71 | |
107 | |
| 72 | my $row = -$self->view_start; |
108 | my $search = $self->special_encode ($self->{search}); |
| 73 | |
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| 74 | delete $self->{found}; |
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| 75 | |
109 | |
| 76 | no re 'eval'; # just to be sure |
110 | no re 'eval'; # just to be sure |
| 77 | my $re = qr/$self->{search}/; |
111 | if (my $re = eval { qr/$search/ }) { |
| 78 | |
112 | while ($self->nrow > $row && $row >= $self->top_row) { |
| 79 | while ($row > -$self->nsaved) { |
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| 80 | my $line = $self->line ($row) |
113 | my $line = $self->line ($row) |
| 81 | or last; |
114 | or last; |
| 82 | |
115 | |
| 83 | my $text = $line->t; |
116 | my $text = $line->t; |
| 84 | if ($text =~ /$re/g) { |
117 | if ($text =~ /$re/g) { |
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118 | delete $self->{found}; |
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119 | |
| 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 | my $line = $self->line ($self->{row}); |
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172 | $self->search (-1, $line->beg - 1) |
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173 | if $line->beg > $self->top_row; |
| 139 | } elsif ($keysym == 0xff54) { |
174 | } elsif ($keysym == 0xff54) { # down |
| 140 | $self->view_start ($self->view_start - 1); |
175 | my $line = $self->line ($self->{row}); |
| 141 | } elsif ($string eq "/") { |
176 | $self->search (+1, $line->end + 1) |
| 142 | $self->{in_search} = $self->view_start; |
177 | if $line->end < $self->nrow; |
| 143 | $self->search; |
178 | } elsif ($keysym == 0xff08) { # backspace |
| 144 | } elsif ($string eq "n") { |
179 | substr $self->{search}, -1, 1, ""; |
| 145 | $self->search; |
180 | $self->search (+1, $self->{row}); |
| 146 | } elsif ($string eq "p") { |
181 | $self->idle; |
| 147 | } elsif ($string ne "") { |
182 | } elsif ($string !~ /[\x00-\x1f\x80-\xaf]/) { |
| 148 | $self->scr_bell; |
183 | return; # pass to tt_write |
| 149 | } |
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| 150 | } |
184 | } |
| 151 | |
185 | |
| 152 | 1 |
186 | 1 |
| 153 | } |
187 | } |
| 154 | |
188 | |
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189 | sub tt_write { |
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190 | my ($self, $data) = @_; |
| 155 | |
191 | |
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192 | $self->{search} .= $self->locale_decode ($data); |
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193 | |
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194 | $self->{search} =~ s/^\(\?i\)// |
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195 | if $self->{search} =~ /^\(.*[[:upper:]]/; |
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196 | |
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197 | delete $self->{found}; |
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198 | $self->search (-1, $self->{row}); |
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199 | $self->idle; |
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200 | |
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201 | 1 |
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202 | } |
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203 | |
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204 | |
