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Comparing rxvt-unicode/src/perl/selection (file contents):
Revision 1.44 by root, Mon Nov 19 09:27:08 2007 UTC vs.
Revision 1.57 by root, Sat Apr 26 20:51:12 2014 UTC

1#! perl 1#! perl
2
3#:META:X_RESOURCE:%.pattern-0:string:first selection pattern
4
5=head1 NAME
6
7selection - more intelligent selection (enabled by default)
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 following bindable keyboard commands:
45
46=over 4
47
48=item rot13
49
50Rot-13 the selection when activated. Used via keyboard trigger:
51
52 URxvt.keysym.C-M-r: perl:selection:rot13
53
54=back
55
56=cut
2 57
3sub on_user_command { 58sub on_user_command {
4 my ($self, $cmd) = @_; 59 my ($self, $cmd) = @_;
5 60
6 $cmd eq "selection:rot13" 61 $cmd eq "selection:rot13"
7 and $self->selection (map { y/A-Za-z/N-ZA-Mn-za-m/; $_ } $self->selection); 62 and $self->selection (map { y/A-Za-z/N-ZA-Mn-za-m/; $_ } $self->selection);
8 63
9 () 64 ()
65}
66
67sub on_keyboard_dispatch {
68 &on_user_command;
10} 69}
11 70
12sub on_init { 71sub on_init {
13 my ($self) = @_; 72 my ($self) = @_;
14 73
… …
17 push @{ $self->{patterns} }, qr{\G [\Q$res\E[:space:]]* ([^\Q$res\E[:space:]]+) }x; 76 push @{ $self->{patterns} }, qr{\G [\Q$res\E[:space:]]* ([^\Q$res\E[:space:]]+) }x;
18 } 77 }
19 78
20 for (my $idx = 0; defined (my $res = $self->x_resource ("selection.pattern-$idx")); $idx++) { 79 for (my $idx = 0; defined (my $res = $self->x_resource ("selection.pattern-$idx")); $idx++) {
21 $res = $self->locale_decode ($res); 80 $res = $self->locale_decode ($res);
22 utf8::encode $res;
23 push @{ $self->{patterns} }, qr/$res/; 81 push @{ $self->{patterns} }, qr/$res/;
24 } 82 }
25 83
26 $self->{enabled} = 1; 84 $self->{enabled} = 1;
27 85
… …
32 () 90 ()
33} 91}
34 92
35# "find interesting things"-patterns 93# "find interesting things"-patterns
36my @mark_patterns = ( 94my @mark_patterns = (
37 qr{ ([[:word:]]+) }x, 95# qr{ ([[:word:]]+) }x,
38 qr{ ([^[:space:]]+) }x, 96 qr{ ([^[:space:]]+) }x,
39 97
40 # common types of "parentheses" 98 # common types of "parentheses"
41 qr{ (?<![^[:space:]]) ` ([^‘’]+) ` (?![^[:space:]]) }x, 99 qr{ (?<![^[:space:]]) [`'] ([^`']+) [`'] (?![^[:space:]]) }x,
42 qr{ (?<![^[:space:]]) ‘ ([^‘’]+) ’ (?![^[:space:]]) }x, 100 qr{ (?<![^[:space:]]) ‘ ([^‘’]+) ’ (?![^[:space:]]) }x,
43 qr{ (?<![^[:space:]]) ` ([^`']+) ' (?![^[:space:]]) }x, 101 qr{ (?<![^[:space:]]) “ ([^“”]+) ” (?![^[:space:]]) }x,
44 102
45 qr{ (?<![^[:space:]]) ‘ ([^`']+) ’ (?![^[:space:]]) }x,
46 qr{ (?<![^[:space:]]) “ ([^`']+) ” (?![^[:space:]]) }x,
47
48 qr{ (?<![^[:space:]]) (' [^[:space:]] [^']* ') }x, 103 qr{ (?<![^[:space:]]) (' [^[:space:]] [^']* ') }x,
49 qr{ (' [^']* [^[:space:]] ') (?![^[:space:]]) }x, 104 qr{ (' [^']* [^[:space:]] ') (?![^[:space:]]) }x,
105 qr{ (?<![^[:space:]]) (` [^[:space:]] [^']* ') }x,
106 qr{ (` [^']* [^[:space:]] ') (?![^[:space:]]) }x,
50 qr{ (?<![^[:space:]]) (" [^[:space:]] [^"]* ") }x, 107 qr{ (?<![^[:space:]]) (" [^[:space:]] [^"]* ") }x,
51 qr{ (" [^"]* [^[:space:]] ") (?![^[:space:]]) }x, 108 qr{ (" [^"]* [^[:space:]] ") (?![^[:space:]]) }x,
52 109
53 qr{ \< ([^>]+) \> }x,
54 qr{ \( ([^)]+) \) }x,
55 qr{ \{ ([^}]+) \} }x, 110 qr{ \{ ([^\{\}]+) \} }x,
111 qr{ \( ([^\(\)]+) \) }x,
56 qr{ \[ ([^]]+) \] }x, 112 qr{ \[ ([^\[\]]+) \] }x,
113 qr{ \< ([^\<\>]+) \> }x,
57 114
58 # urls, just a heuristic 115 # urls, just a heuristic
59 qr{( 116 qr{(
60 (?:https?://|ftp://|news://|mailto:|file://|\bwww\.)[ab-zA-Z0-9\-\@;\/?:&=%\$_.+!*\x27(),~#]+ 117 (?:https?://|ftp://|news://|mailto:|file://|\bwww\.)[ab-zA-Z0-9\-\@;\/?:&=%\$_.+!*\x27(),~#]+
61 [ab-zA-Z0-9\-\@;\/?:&=%\$_+*()~] # exclude some trailing characters (heuristic) 118 [ab-zA-Z0-9\-\@;\/?:&=%\$_+*()~] # exclude some trailing characters (heuristic)
… …
92 - $line->offset_of ($self->selection_beg); 149 - $line->offset_of ($self->selection_beg);
93 150
94 my @matches; 151 my @matches;
95 152
96 if ($markofs < $line->l) { 153 if ($markofs < $line->l) {
97 # convert markofs from character to UTF-8 offset space
98 {
99 my $prefix = substr $text, 0, $markofs;
100 utf8::encode $prefix;
101 $markofs = length $prefix;
102 }
103
104 # not doing matches in unicode mode helps speed
105 # enourmously here. working in utf-8 should be
106 # equivalent due to the magic of utf-8 encoding.
107 utf8::encode $text;
108 study $text; # _really_ helps, too :) 154 study $text; # _really_ helps, too :)
109 155
110 for my $regex (@mark_patterns, @{ $self->{patterns} }) { 156 for my $regex (@mark_patterns, @{ $self->{patterns} }) {
111 while ($text =~ /$regex/g) { 157 while ($text =~ /$regex/g) {
112 if ($-[1] <= $markofs and $markofs <= $+[1]) { 158 if ($-[1] <= $markofs and $markofs <= $+[1]) {
… …
132 for (sort { $a->[1] <=> $b->[1] or $b->[0] <=> $a->[0] } @matches) { 178 for (sort { $a->[1] <=> $b->[1] or $b->[0] <=> $a->[0] } @matches) {
133 my ($ofs, $len) = @$_; 179 my ($ofs, $len) = @$_;
134 180
135 next if $len <= $curlen; 181 next if $len <= $curlen;
136 182
137 # convert back from UTF-8 offset space to character space
138 {
139 my $length = substr "$text ", $ofs, $len;
140 utf8::decode $length;
141 $len = length $length;
142 }
143 {
144 my $prefix = substr $text, 0, $ofs;
145 utf8::decode $prefix;
146 $ofs = length $prefix;
147 }
148
149 $self->selection_beg ($line->coord_of ($ofs)); 183 $self->selection_beg ($line->coord_of ($ofs));
150 $self->selection_end ($line->coord_of ($ofs + $len)); 184 $self->selection_end ($line->coord_of ($ofs + $len));
151 return 1; 185 return 1;
152 } 186 }
153 187

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