1 | #! perl |
1 | #! perl |
2 | |
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3 | #:META:X_RESOURCE:%.pattern-0:string:first selection pattern |
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4 | |
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5 | =head1 NAME |
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6 | |
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7 | selection - more intelligent selection (enabled by default) |
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8 | |
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9 | =head1 DESCRIPTION |
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10 | |
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11 | This extension tries to be more intelligent when the user extends |
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12 | selections (double-click and further clicks). Right now, it tries to |
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13 | select words, urls and complete shell-quoted arguments, which is very |
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14 | convenient, too, if your F<ls> supports C<--quoting-style=shell>. |
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15 | |
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16 | A double-click usually selects the word under the cursor, further clicks |
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17 | will enlarge the selection. |
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18 | |
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19 | The selection works by trying to match a number of regexes and displaying |
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20 | them in increasing order of length. You can add your own regexes by |
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21 | specifying resources of the form: |
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22 | |
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23 | URxvt.selection.pattern-0: perl-regex |
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24 | URxvt.selection.pattern-1: perl-regex |
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25 | ... |
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26 | |
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27 | The index number (0, 1...) must not have any holes, and each regex must |
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28 | contain at least one pair of capturing parentheses, which will be used for |
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29 | the match. For example, the following adds a regex that matches everything |
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30 | between two vertical bars: |
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31 | |
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32 | URxvt.selection.pattern-0: \\|([^|]+)\\| |
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33 | |
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34 | Another example: Programs I use often output "absolute path: " at the |
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35 | beginning of a line when they process multiple files. The following |
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36 | pattern matches the filename (note, there is a single space at the very |
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37 | end): |
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38 | |
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39 | URxvt.selection.pattern-0: ^(/[^:]+):\ |
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40 | |
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41 | You can look at the source of the selection extension to see more |
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42 | interesting uses, such as parsing a line from beginning to end. |
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43 | |
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44 | This extension also offers following bindable keyboard commands: |
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45 | |
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46 | =over 4 |
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47 | |
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48 | =item rot13 |
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49 | |
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50 | Rot-13 the selection when activated. Used via keyboard trigger: |
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51 | |
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52 | URxvt.keysym.C-M-r: perl:selection:rot13 |
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53 | |
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54 | =back |
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55 | |
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56 | =cut |
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57 | |
3 | sub on_keyboard_command { |
58 | sub 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/; $_ } $self->selection); |
8 | |
63 | |
… | |
… | |
10 | } |
65 | } |
11 | |
66 | |
12 | sub on_init { |
67 | sub on_init { |
13 | my ($self) = @_; |
68 | my ($self) = @_; |
14 | |
69 | |
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70 | if (defined (my $res = $self->resource ("cutchars"))) { |
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71 | $res = $self->locale_decode ($res); |
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72 | push @{ $self->{patterns} }, qr{\G [\Q$res\E[:space:]]* ([^\Q$res\E[:space:]]+) }x; |
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73 | } |
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74 | |
15 | for (my $idx = 0; defined (my $res = $self->x_resource ("selection.pattern-$idx")); $idx++) { |
75 | for (my $idx = 0; defined (my $res = $self->x_resource ("selection.pattern-$idx")); $idx++) { |
16 | no re 'eval'; # just to be sure |
76 | $res = $self->locale_decode ($res); |
17 | push @{ $self->{patterns} }, qr/$res/; |
77 | push @{ $self->{patterns} }, qr/$res/; |
18 | } |
78 | } |
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79 | |
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80 | $self->{enabled} = 1; |
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81 | |
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82 | push @{ $self->{term}{option_popup_hook} }, sub { |
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83 | ("new selection" => $self->{enabled}, sub { $self->{enabled} = shift }) |
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84 | }; |
19 | |
85 | |
20 | () |
86 | () |
21 | } |
87 | } |
22 | |
88 | |
23 | # "find interetsing things"-patterns |
89 | # "find interesting things"-patterns |
24 | my @mark_patterns = ( |
90 | my @mark_patterns = ( |
25 | qr{([[:word:]]+)}, |
91 | # qr{ ([[:word:]]+) }x, |
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92 | qr{ ([^[:space:]]+) }x, |
26 | |
93 | |
27 | # common "parentheses" |
94 | # common types of "parentheses" |
28 | qr{(?:^|\s) ‘ ([^‘’]+?) ’ (?:\s|\)|$)}x, |
95 | qr{ (?<![^[:space:]]) [`'] ([^`']+) [`'] (?![^[:space:]]) }x, |
29 | qr{(?:^|\s) ` ([^`']+?) ' (?:\s|\)|$)}x, |
96 | qr{ (?<![^[:space:]]) ‘ ([^‘’]+) ’ (?![^[:space:]]) }x, |
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97 | qr{ (?<![^[:space:]]) “ ([^“”]+) ” (?![^[:space:]]) }x, |
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98 | |
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99 | qr{ (?<![^[:space:]]) (' [^[:space:]] [^']* ') }x, |
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100 | qr{ (' [^']* [^[:space:]] ') (?![^[:space:]]) }x, |
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101 | qr{ (?<![^[:space:]]) (` [^[:space:]] [^']* ') }x, |
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102 | qr{ (` [^']* [^[:space:]] ') (?![^[:space:]]) }x, |
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103 | qr{ (?<![^[:space:]]) (" [^[:space:]] [^"]* ") }x, |
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104 | qr{ (" [^"]* [^[:space:]] ") (?![^[:space:]]) }x, |
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105 | |
30 | qr{ \{ ([^{}]+?) \} }x, |
106 | qr{ \{ ([^\{\}]+) \} }x, |
31 | qr{ \[ ([^{}]+?) \] }x, |
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32 | qr{ \( ([^()]+?) \) }x, |
107 | qr{ \( ([^\(\)]+) \) }x, |
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108 | qr{ \[ ([^\[\]]+) \] }x, |
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109 | qr{ \< ([^\<\>]+) \> }x, |
33 | |
110 | |
34 | # urls, just a heuristic |
111 | # urls, just a heuristic |
35 | qr{( |
112 | qr{( |
36 | (?:https?|ftp|news|mailto|file)://[ab-zA-Z0-9\-\@;\/?:&=%\$_.+!*\x27(),~]+ |
113 | (?:https?://|ftp://|news://|mailto:|file://|\bwww\.)[ab-zA-Z0-9\-\@;\/?:&=%\$_.+!*\x27(),~#]+ |
37 | [ab-zA-Z0-9\-\@;\/?:&=%\$_+!*\x27()~] # exclude some trailing characters (heuristic) |
114 | [ab-zA-Z0-9\-\@;\/?:&=%\$_+*()~] # exclude some trailing characters (heuristic) |
38 | )}x, |
115 | )}x, |
39 | |
116 | |
40 | # shell-like argument quoting, basically always matches |
117 | # shell-like argument quoting, basically always matches |
41 | qr{\G [\ \t|&;<>()] *( |
118 | qr{\G [\ \t|&;<>()]* ( |
42 | (?: |
119 | (?: |
43 | [^\\"'\ \t|&;<>()]+ |
120 | [^\\"'\ \t|&;<>()]+ |
44 | | \\. |
121 | | \\. |
45 | | " (?: [^\\"]+ | \\. )* " |
122 | | " (?: [^\\"]+ | \\. )* " |
46 | | ' [^']* ' |
123 | | ' [^']* ' |
… | |
… | |
55 | ); |
132 | ); |
56 | |
133 | |
57 | sub on_sel_extend { |
134 | sub on_sel_extend { |
58 | my ($self, $time) = @_; |
135 | my ($self, $time) = @_; |
59 | |
136 | |
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137 | $self->{enabled} |
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138 | or return; |
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139 | |
60 | my ($row, $col) = $self->selection_mark; |
140 | my ($row, $col) = $self->selection_mark; |
61 | my $line = $self->line ($row); |
141 | my $line = $self->line ($row); |
62 | my $text = $line->t; |
142 | my $text = $line->t; |
63 | my $markofs = $line->offset_of ($row, $col); |
143 | my $markofs = $line->offset_of ($row, $col); |
64 | my $curlen = $line->offset_of ($self->selection_end) |
144 | my $curlen = $line->offset_of ($self->selection_end) |
65 | - $line->offset_of ($self->selection_beg); |
145 | - $line->offset_of ($self->selection_beg); |
66 | |
146 | |
67 | my @matches; |
147 | my @matches; |
68 | |
148 | |
69 | for my $regex (@mark_patterns, @{ $self->{patterns} }) { |
149 | if ($markofs < $line->l) { |
70 | while ($text =~ /$regex/g) { |
150 | study $text; # _really_ helps, too :) |
71 | if ($-[1] <= $markofs and $markofs <= $+[1]) { |
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72 | my $ofs = $-[1]; |
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73 | my $match = $1; |
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74 | |
151 | |
75 | push @matches, [$ofs, length $match]; |
152 | for my $regex (@mark_patterns, @{ $self->{patterns} }) { |
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153 | while ($text =~ /$regex/g) { |
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154 | if ($-[1] <= $markofs and $markofs <= $+[1]) { |
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155 | my $ofs = $-[1]; |
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156 | my $match = $1; |
76 | |
157 | |
77 | for my $regex (@simplify_patterns) { |
158 | for my $regex (@simplify_patterns) { |
78 | if ($match =~ $regex) { |
159 | if ($match =~ $regex) { |
79 | $match = $1; |
160 | $match = $1; |
80 | $ofs += $-[1]; |
161 | $ofs += $-[1]; |
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162 | } |
81 | } |
163 | } |
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164 | |
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165 | push @matches, [$ofs, length $match]; |
82 | } |
166 | } |
83 | |
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84 | push @matches, [$ofs, length $match]; |
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85 | } |
167 | } |
86 | } |
168 | } |
87 | } |
169 | } |
88 | |
170 | |
89 | # whole line |
171 | # whole line |