| 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 | |
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7 | =head1 NAME |
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8 | |
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9 | searchable-scrollback - 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 by |
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14 | the C<searchable-scrollback:start> action (bound to C<M-s> by |
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15 | default). While in search mode, normal terminal input/output is |
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16 | suspended and a regex is displayed at the bottom of the 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. In addition, the following bindings are recognized: |
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20 | |
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21 | =over 4 |
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22 | |
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23 | =item C<BackSpace> |
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24 | |
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25 | Remove a character from the regex. |
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26 | |
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27 | =item C<Insert> |
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28 | |
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29 | Append the value of the PRIMARY selection to the regex. |
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30 | |
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31 | =item C<Up> |
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32 | |
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33 | Search for a match upwards. |
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34 | |
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35 | =item C<Down> |
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36 | |
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37 | Search for a match downwards. |
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38 | |
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39 | =item C<Prior> |
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40 | |
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41 | Scroll up. |
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42 | |
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43 | =item C<Next> |
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44 | |
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45 | Scroll down. |
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46 | |
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47 | =item C<End> |
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48 | |
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49 | Scroll to the bottom. |
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50 | |
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51 | =item C<Escape> |
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52 | |
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53 | Leave the mode and return to the point where search was started. |
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54 | |
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55 | =item C<Enter> or C<Return> |
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56 | |
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57 | Leave the mode maintaining the current position in the scrollback. |
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58 | Additionally, if the C<Shift> modifier is active, store the first |
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59 | match in the current line into the primary selection. |
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60 | |
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61 | =back |
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62 | |
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63 | The regex defaults to "(?i)", resulting in a case-insensitive search. To |
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64 | get a case-sensitive search you can delete this prefix using C<BackSpace> |
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65 | or simply use an uppercase character which removes the "(?i)" prefix. |
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66 | |
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67 | See L<perlre> for more info about perl regular expression syntax. |
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68 | |
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69 | =cut |
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70 | |
| 5 | sub on_init { |
71 | sub on_init { |
| 6 | my ($self) = @_; |
72 | my ($self) = @_; |
| 7 | |
73 | |
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74 | # only for backwards compatibility |
| 8 | my $hotkey = $self->{argv}[0] || "M-s"; |
75 | my $hotkey = $self->{argv}[0] |
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76 | || $self->x_resource ("%") |
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77 | || "M-s"; |
| 9 | |
78 | |
| 10 | $self->parse_keysym ($hotkey, "perl:searchable-scrollback:enter") |
79 | $self->bind_action ($hotkey, "%:start") |
| 11 | or warn "unable to register '$hotkey' as scrollback search enter hotkey\n"; |
80 | or warn "unable to register '$hotkey' as scrollback search start hotkey\n"; |
| 12 | |
81 | |
| 13 | () |
82 | () |
| 14 | } |
83 | } |
| 15 | |
84 | |
| 16 | sub on_keyboard_command { |
85 | sub on_user_command { |
| 17 | my ($self, $cmd) = @_; |
86 | my ($self, $cmd) = @_; |
| 18 | |
87 | |
| 19 | if ($cmd eq "searchable-scrollback:enter") { |
88 | $cmd eq "searchable-scrollback:start" |
| 20 | $self->enter; |
89 | and $self->enter; |
| 21 | } |
90 | |
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91 | () |
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92 | } |
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93 | |
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94 | sub on_action { |
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95 | my ($self, $action) = @_; |
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96 | |
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97 | $action eq "start" |
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98 | and $self->enter; |
| 22 | |
99 | |
| 23 | () |
100 | () |
| 24 | } |
101 | } |
| 25 | |
102 | |
| 26 | sub msg { |
103 | sub msg { |
| … | |
… | |
| 33 | sub enter { |
110 | sub enter { |
| 34 | my ($self) = @_; |
111 | my ($self) = @_; |
| 35 | |
112 | |
| 36 | return if $self->{overlay}; |
113 | return if $self->{overlay}; |
| 37 | |
114 | |
| 38 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EVENT_NONE); |
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| 39 | $self->{view_start} = $self->view_start; |
115 | $self->{view_start} = $self->view_start; |
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116 | $self->{pty_ev_events} = $self->pty_ev_events (urxvt::EV_NONE); |
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117 | $self->{row} = $self->nrow - 1; |
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118 | $self->{search} = "(?i)"; |
| 40 | |
119 | |
| 41 | $self->enable ( |
120 | $self->enable ( |
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121 | key_press => \&key_press, |
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122 | tt_write => \&tt_write, |
| 42 | refresh_begin => sub { |
123 | refresh_begin => \&refresh, |
| 43 | warn "beg(@_)\n"; |
124 | refresh_end => \&refresh, |
| 44 | }, |
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| 45 | refresh_end => sub { |
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| 46 | warn "end(@_)\n"; |
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| 47 | }, |
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| 48 | ); |
125 | ); |
| 49 | |
126 | |
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127 | $self->{manpage_overlay} = $self->overlay (0, -2, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0); |
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128 | $self->{manpage_overlay}->set (0, 0, "scrollback search, see the ${urxvt::RXVTNAME}perl manpage for details"); |
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129 | |
| 50 | $self->idle; |
130 | $self->idle; |
| 51 | } |
131 | } |
| 52 | |
132 | |
| 53 | sub leave { |
133 | sub leave { |
| 54 | my ($self) = @_; |
134 | my ($self) = @_; |
| 55 | |
135 | |
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136 | $self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end"); |
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137 | $self->pty_ev_events ($self->{pty_ev_events}); |
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138 | |
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139 | delete $self->{manpage_overlay}; |
| 56 | delete $self->{overlay}; |
140 | delete $self->{overlay}; |
| 57 | |
141 | delete $self->{search}; |
| 58 | $self->disable ("refresh_begin", "refresh_end"); |
142 | delete $self->{found}; |
| 59 | |
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| 60 | $self->pty_ev_events ($self->{pty_ev_events}); |
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| 61 | $self->want_refresh; |
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| 62 | } |
143 | } |
| 63 | |
144 | |
| 64 | sub idle { |
145 | sub idle { |
| 65 | my ($self) = @_; |
146 | my ($self) = @_; |
| 66 | |
147 | |
| 67 | $self->msg ("scrollback search, escape=exit, enter=accept, /=start search, n=next, p=previous"); |
148 | $self->msg ("(escape cancels) /$self->{search}█"); |
| 68 | |
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| 69 | delete $self->{in_search}; |
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| 70 | } |
149 | } |
| 71 | |
150 | |
| 72 | sub search { |
151 | sub search { |
| 73 | my ($self) = @_; |
152 | my ($self, $dir, $row) = @_; |
| 74 | |
153 | |
| 75 | my $row = -$self->view_start; |
154 | my $search = $self->special_encode ($self->{search}); |
| 76 | |
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| 77 | delete $self->{found}; |
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| 78 | |
155 | |
| 79 | no re 'eval'; # just to be sure |
156 | no re 'eval'; # just to be sure |
| 80 | my $re = qr/$self->{search}/; |
157 | if (my $re = eval { qr/$search/ }) { |
| 81 | |
158 | while ($self->nrow > $row && $row >= $self->top_row) { |
| 82 | while ($row > -$self->nsaved) { |
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| 83 | my $line = $self->line ($row) |
159 | my $line = $self->line ($row) |
| 84 | or last; |
160 | or last; |
| 85 | |
161 | |
| 86 | my $text = $line->t; |
162 | my $text = $line->t; |
| 87 | if ($text =~ /$re/g) { |
163 | if ($text =~ /$re/g) { |
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164 | delete $self->{found}; |
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165 | |
| 88 | do { |
166 | do { |
| 89 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[1])]; |
167 | push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])]; |
| 90 | } while $text =~ /$re/g; |
168 | } while $text =~ /$re/g; |
| 91 | |
169 | |
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170 | $self->{row} = $row; |
| 92 | $self->view_start (-$row + ($self->nrow >> 1)); |
171 | $self->view_start (List::Util::min 0, $row - ($self->nrow >> 1)); |
| 93 | last; |
172 | $self->want_refresh; |
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173 | return; |
| 94 | } |
174 | } |
| 95 | |
175 | |
| 96 | $row = $line->beg - 1; |
176 | $row = $dir < 0 ? $line->beg - 1 : $line->end + 1; |
| 97 | } |
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| 98 | |
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| 99 | $self->msg ("enter/type/backspace: /$self->{search}_" |
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| 100 | . ($self->{found} ? " (not found)" : "")); |
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| 101 | $self->scr_bell unless $self->{found}; |
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| 102 | } |
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| 103 | |
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| 104 | sub on_key_press { |
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| 105 | my ($self, $event, $keysym, $string) = @_; |
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| 106 | |
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| 107 | $self->{overlay} |
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| 108 | or return; |
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| 109 | |
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| 110 | if (exists $self->{in_search}) { |
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| 111 | if ($keysym == 0xff0d || $keysym == 0xff8d) { |
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| 112 | delete $self->{in_search}; |
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| 113 | } elsif ($keysym == 0xff1b) { |
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| 114 | $self->view_start (delete $self->{in_search}); |
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| 115 | } elsif ($keysym == 0xff08) { |
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| 116 | substr $self->{search}, -1, 1, ""; |
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| 117 | } elsif ($string ne "") { |
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| 118 | $self->{search} .= $string; |
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| 119 | } |
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| 120 | |
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| 121 | $self->search; |
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| 122 | } else { |
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| 123 | if ($keysym == 0xff0d || $keysym == 0xff8d) { |
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| 124 | # OK |
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| 125 | $self->leave; |
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| 126 | } elsif ($keysym == 0xff1b) { |
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| 127 | $self->view_start ($self->{view_start}); |
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| 128 | $self->leave; |
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| 129 | } elsif ($keysym == 0xff52) { |
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| 130 | $self->view_start ($self->view_start + 1); |
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| 131 | } elsif ($keysym == 0xff54) { |
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| 132 | $self->view_start ($self->view_start - 1); |
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| 133 | } elsif ($string eq "/") { |
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| 134 | $self->{in_search} = $self->view_start; |
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| 135 | $self->search; |
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| 136 | } elsif ($string eq "n") { |
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| 137 | } elsif ($string eq "p") { |
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| 138 | } elsif ($string ne "") { |
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| 139 | $self->scr_bell; |
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| 140 | } |
177 | } |
| 141 | } |
178 | } |
| 142 | |
179 | |
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180 | $self->scr_bell; |
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181 | } |
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182 | |
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183 | sub refresh { |
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184 | my ($self) = @_; |
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185 | |
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186 | return unless $self->{found}; |
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187 | |
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188 | my $xor = urxvt::RS_RVid | urxvt::RS_Blink; |
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189 | for (@{ $self->{found} }) { |
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190 | $self->scr_xor_span (@$_, $xor); |
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191 | $xor = urxvt::RS_RVid; |
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192 | } |
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193 | |
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194 | () |
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195 | } |
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196 | |
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197 | sub key_press { |
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198 | my ($self, $event, $keysym, $string) = @_; |
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199 | |
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200 | delete $self->{manpage_overlay}; |
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201 | |
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202 | if ($keysym == 0xff0d || $keysym == 0xff8d) { # enter |
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203 | if ($self->{found} && $event->{state} & urxvt::ShiftMask) { |
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204 | my ($br, $bc, $er, $ec) = @{ $self->{found}[0] }; |
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205 | $self->selection_beg ($br, $bc); |
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206 | $self->selection_end ($er, $ec); |
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207 | $self->selection_make ($event->{time}); |
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208 | } |
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209 | $self->leave; |
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210 | } elsif ($keysym == 0xff1b) { # escape |
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211 | $self->view_start ($self->{view_start}); |
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212 | $self->leave; |
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213 | } elsif ($keysym == 0xff57) { # end |
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214 | $self->{row} = $self->nrow - 1; |
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215 | $self->view_start (0); |
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216 | } elsif ($keysym == 0xff52) { # up |
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217 | my $line = $self->line ($self->{row}); |
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218 | $self->search (-1, $line->beg - 1) |
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219 | if $line->beg > $self->top_row; |
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220 | } elsif ($keysym == 0xff54) { # down |
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221 | my $line = $self->line ($self->{row}); |
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222 | $self->search (+1, $line->end + 1) |
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223 | if $line->end < $self->nrow; |
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224 | } elsif ($keysym == 0xff55) { # prior |
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225 | my $row = $self->view_start - ($self->nrow - 1); |
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226 | $self->view_start (List::Util::min 0, $row); |
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227 | } elsif ($keysym == 0xff56) { # next |
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228 | my $row = $self->view_start + ($self->nrow - 1); |
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229 | $self->view_start (List::Util::min 0, $row); |
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230 | } elsif ($keysym == 0xff63) { # insert |
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231 | $self->selection_request (urxvt::CurrentTime, 1); |
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232 | } elsif ($keysym == 0xff08) { # backspace |
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233 | substr $self->{search}, -1, 1, ""; |
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234 | $self->search (+1, $self->{row}); |
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235 | $self->idle; |
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236 | } elsif ($string !~ /[\x00-\x1f\x80-\xaf]/) { |
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237 | return; # pass to tt_write |
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238 | } |
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239 | |
| 143 | 1 |
240 | 1 |
| 144 | } |
241 | } |
| 145 | |
242 | |
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243 | sub tt_write { |
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244 | my ($self, $data) = @_; |
| 146 | |
245 | |
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246 | $self->{search} .= $self->locale_decode ($data); |
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247 | |
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248 | $self->{search} =~ s/^\(\?i\)// |
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249 | if $self->{search} =~ /^\(.*[[:upper:]]/; |
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250 | |
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251 | delete $self->{found}; |
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252 | $self->search (-1, $self->{row}); |
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253 | $self->idle; |
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254 | |
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255 | 1 |
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256 | } |
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257 | |
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258 | |
