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Comparing rxvt-unicode/src/perl/selection (file contents):
Revision 1.50 by root, Sat Jan 12 22:13:47 2008 UTC vs.
Revision 1.62 by root, Wed Jun 23 12:45:30 2021 UTC

1#! perl 1#! perl
2
3#:META:RESOURCE:%.pattern-0:string:first selection pattern
4
5=head1 NAME
6
7selection - more intelligent selection
8
9=head1 DESCRIPTION
10
11This extension tries to be more intelligent when the user extends
12selections (double-click and further clicks). Right now, it tries to
13select words, urls and complete shell-quoted arguments, which is very
14convenient, too, if your F<ls> supports C<--quoting-style=shell>.
15
16A double-click usually selects the word under the cursor, further clicks
17will enlarge the selection.
18
19The selection works by trying to match a number of regexes and displaying
20them in increasing order of length. You can add your own regexes by
21specifying resources of the form:
22
23 URxvt.selection.pattern-0: perl-regex
24 URxvt.selection.pattern-1: perl-regex
25 ...
26
27The index number (0, 1...) must not have any holes, and each regex must
28contain at least one pair of capturing parentheses, which will be used for
29the match. For example, the following adds a regex that matches everything
30between two vertical bars:
31
32 URxvt.selection.pattern-0: \\|([^|]+)\\|
33
34Another example: Programs I use often output "absolute path: " at the
35beginning of a line when they process multiple files. The following
36pattern matches the filename (note, there is a single space at the very
37end):
38
39 URxvt.selection.pattern-0: ^(/[^:]+):\
40
41You can look at the source of the selection extension to see more
42interesting uses, such as parsing a line from beginning to end.
43
44This extension also offers the following actions:
45
46=over 4
47
48=item rot13
49
50Rot-13 the selection when activated.
51
52Example:
53
54 URxvt.keysym.C-M-r: selection:rot13
55
56=back
57
58=cut
2 59
3sub on_user_command { 60sub on_user_command {
4 my ($self, $cmd) = @_; 61 my ($self, $cmd) = @_;
5 62
6 $cmd eq "selection:rot13" 63 $cmd eq "selection:rot13"
64 and $self->selection (map { y/A-Za-z/N-ZA-Mn-za-m/; $_ } $self->selection);
65
66 ()
67}
68
69sub on_action {
70 my ($self, $action) = @_;
71
72 $action eq "rot13"
7 and $self->selection (map { y/A-Za-z/N-ZA-Mn-za-m/; $_ } $self->selection); 73 and $self->selection (map { y/A-Za-z/N-ZA-Mn-za-m/; $_ } $self->selection);
8 74
9 () 75 ()
10} 76}
11 77
… …
17 push @{ $self->{patterns} }, qr{\G [\Q$res\E[:space:]]* ([^\Q$res\E[:space:]]+) }x; 83 push @{ $self->{patterns} }, qr{\G [\Q$res\E[:space:]]* ([^\Q$res\E[:space:]]+) }x;
18 } 84 }
19 85
20 for (my $idx = 0; defined (my $res = $self->x_resource ("selection.pattern-$idx")); $idx++) { 86 for (my $idx = 0; defined (my $res = $self->x_resource ("selection.pattern-$idx")); $idx++) {
21 $res = $self->locale_decode ($res); 87 $res = $self->locale_decode ($res);
22 utf8::encode $res;
23 push @{ $self->{patterns} }, qr/$res/; 88 push @{ $self->{patterns} }, qr/$res/;
24 } 89 }
25 90
26 $self->{enabled} = 1; 91 $self->{enabled} = 1;
27 92
… …
42 qr{ (?<![^[:space:]]) ‘ ([^‘’]+) ’ (?![^[:space:]]) }x, 107 qr{ (?<![^[:space:]]) ‘ ([^‘’]+) ’ (?![^[:space:]]) }x,
43 qr{ (?<![^[:space:]]) “ ([^“”]+) ” (?![^[:space:]]) }x, 108 qr{ (?<![^[:space:]]) “ ([^“”]+) ” (?![^[:space:]]) }x,
44 109
45 qr{ (?<![^[:space:]]) (' [^[:space:]] [^']* ') }x, 110 qr{ (?<![^[:space:]]) (' [^[:space:]] [^']* ') }x,
46 qr{ (' [^']* [^[:space:]] ') (?![^[:space:]]) }x, 111 qr{ (' [^']* [^[:space:]] ') (?![^[:space:]]) }x,
112 qr{ (?<![^[:space:]]) (` [^[:space:]] [^']* ') }x,
113 qr{ (` [^']* [^[:space:]] ') (?![^[:space:]]) }x,
47 qr{ (?<![^[:space:]]) (" [^[:space:]] [^"]* ") }x, 114 qr{ (?<![^[:space:]]) (" [^[:space:]] [^"]* ") }x,
48 qr{ (" [^"]* [^[:space:]] ") (?![^[:space:]]) }x, 115 qr{ (" [^"]* [^[:space:]] ") (?![^[:space:]]) }x,
49 116
50 qr{ \{ ([^\{\}]+) \} }x, 117 qr{ \{ ([^\{\}]+) \} }x,
51 qr{ \( ([^\(\)]+) \) }x, 118 qr{ \( ([^\(\)]+) \) }x,
… …
89 - $line->offset_of ($self->selection_beg); 156 - $line->offset_of ($self->selection_beg);
90 157
91 my @matches; 158 my @matches;
92 159
93 if ($markofs < $line->l) { 160 if ($markofs < $line->l) {
94 # convert markofs from character to UTF-8 offset space
95 {
96 my $prefix = substr $text, 0, $markofs;
97 utf8::encode $prefix;
98 $markofs = length $prefix;
99 }
100
101 # not doing matches in unicode mode helps speed
102 # enourmously here. working in utf-8 should be
103 # equivalent due to the magic of utf-8 encoding.
104 utf8::encode $text;
105 study $text; # _really_ helps, too :) 161 study $text; # _really_ helps, too :)
106 162
107 for my $regex (@mark_patterns, @{ $self->{patterns} }) { 163 for my $regex (@mark_patterns, @{ $self->{patterns} }) {
108 while ($text =~ /$regex/g) { 164 while ($text =~ /$regex/g) {
109 if ($-[1] <= $markofs and $markofs <= $+[1]) { 165 if ($-[1] <= $markofs and $markofs <= $+[1]) {
… …
129 for (sort { $a->[1] <=> $b->[1] or $b->[0] <=> $a->[0] } @matches) { 185 for (sort { $a->[1] <=> $b->[1] or $b->[0] <=> $a->[0] } @matches) {
130 my ($ofs, $len) = @$_; 186 my ($ofs, $len) = @$_;
131 187
132 next if $len <= $curlen; 188 next if $len <= $curlen;
133 189
134 # convert back from UTF-8 offset space to character space
135 {
136 my $length = substr "$text ", $ofs, $len;
137 utf8::decode $length;
138 $len = length $length;
139 }
140 {
141 my $prefix = substr $text, 0, $ofs;
142 utf8::decode $prefix;
143 $ofs = length $prefix;
144 }
145
146 $self->selection_beg ($line->coord_of ($ofs)); 190 $self->selection_beg ($line->coord_of ($ofs));
147 $self->selection_end ($line->coord_of ($ofs + $len)); 191 $self->selection_end ($line->coord_of ($ofs + $len));
148 return 1; 192 return 1;
149 } 193 }
150 194

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