| 1 | #! perl |
1 | #! perl |
| 2 | |
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 |
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| 17 | $res = $self->locale_decode ($res); |
76 | $res = $self->locale_decode ($res); |
| 18 | utf8::encode $res; |
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| 19 | push @{ $self->{patterns} }, qr/$res/; |
77 | push @{ $self->{patterns} }, qr/$res/; |
| 20 | } |
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 | }; |
| 21 | |
85 | |
| 22 | () |
86 | () |
| 23 | } |
87 | } |
| 24 | |
88 | |
| 25 | # "find interetsing things"-patterns |
89 | # "find interesting things"-patterns |
| 26 | my @mark_patterns = ( |
90 | my @mark_patterns = ( |
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91 | # qr{ ([[:word:]]+) }x, |
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92 | qr{ ([^[:space:]]+) }x, |
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93 | |
| 27 | # common types of "parentheses" |
94 | # common types of "parentheses" |
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95 | qr{ (?<![^[:space:]]) [`'] ([^`']+) [`'] (?![^[:space:]]) }x, |
| 28 | qr{ (?<![^[:space:]]) ‘ ([^‘’]+) ’ (?![^[:space]]) }x, |
96 | qr{ (?<![^[:space:]]) ‘ ([^‘’]+) ’ (?![^[:space:]]) }x, |
| 29 | qr{ (?<![^[:space:]]) ` ([^`']+) ' (?![^[:space]]) }x, |
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, |
| 30 | qr{ (?<![^[:space:]]) (" [^[:space:]] [^"]* ") }x, |
103 | qr{ (?<![^[:space:]]) (" [^[:space:]] [^"]* ") }x, |
| 31 | qr{ (" [^"]* [^[:space:]] ") (?![^[:space]]) }x, |
104 | qr{ (" [^"]* [^[:space:]] ") (?![^[:space:]]) }x, |
| 32 | qr{ \< ([^<>[:space:]]+) \> }x, |
105 | |
| 33 | qr{ \{ ([^{}[:space:]]+) \} }x, |
106 | qr{ \{ ([^\{\}]+) \} }x, |
| 34 | qr{ \[ ([^{}[:space:]]+) \] }x, |
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| 35 | qr{ \( ([^()[:space:]]+) \) }x, |
107 | qr{ \( ([^\(\)]+) \) }x, |
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108 | qr{ \[ ([^\[\]]+) \] }x, |
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109 | qr{ \< ([^\<\>]+) \> }x, |
| 36 | |
110 | |
| 37 | # urls, just a heuristic |
111 | # urls, just a heuristic |
| 38 | qr{( |
112 | qr{( |
| 39 | (?:https?|ftp|news|mailto|file)://[ab-zA-Z0-9\-\@;\/?:&=%\$_.+!*\x27(),~]+ |
113 | (?:https?://|ftp://|news://|mailto:|file://|\bwww\.)[ab-zA-Z0-9\-\@;\/?:&=%\$_.+!*\x27(),~#]+ |
| 40 | [ab-zA-Z0-9\-\@;\/?:&=%\$_+!*\x27()~] # exclude some trailing characters (heuristic) |
114 | [ab-zA-Z0-9\-\@;\/?:&=%\$_+*()~] # exclude some trailing characters (heuristic) |
| 41 | )}x, |
115 | )}x, |
| 42 | |
116 | |
| 43 | # shell-like argument quoting, basically always matches |
117 | # shell-like argument quoting, basically always matches |
| 44 | qr{\G [\ \t|&;<>()] *( |
118 | qr{\G [\ \t|&;<>()]* ( |
| 45 | (?: |
119 | (?: |
| 46 | [^\\"'\ \t|&;<>()]+ |
120 | [^\\"'\ \t|&;<>()]+ |
| 47 | | \\. |
121 | | \\. |
| 48 | | " (?: [^\\"]+ | \\. )* " |
122 | | " (?: [^\\"]+ | \\. )* " |
| 49 | | ' [^']* ' |
123 | | ' [^']* ' |
| … | |
… | |
| 58 | ); |
132 | ); |
| 59 | |
133 | |
| 60 | sub on_sel_extend { |
134 | sub on_sel_extend { |
| 61 | my ($self, $time) = @_; |
135 | my ($self, $time) = @_; |
| 62 | |
136 | |
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137 | $self->{enabled} |
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138 | or return; |
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139 | |
| 63 | my ($row, $col) = $self->selection_mark; |
140 | my ($row, $col) = $self->selection_mark; |
| 64 | my $line = $self->line ($row); |
141 | my $line = $self->line ($row); |
| 65 | my $text = $line->t; |
142 | my $text = $line->t; |
| 66 | my $markofs = $line->offset_of ($row, $col); |
143 | my $markofs = $line->offset_of ($row, $col); |
| 67 | my $curlen = $line->offset_of ($self->selection_end) |
144 | my $curlen = $line->offset_of ($self->selection_end) |
| 68 | - $line->offset_of ($self->selection_beg); |
145 | - $line->offset_of ($self->selection_beg); |
| 69 | |
146 | |
| 70 | my @matches; |
147 | my @matches; |
| 71 | |
148 | |
| 72 | if ($markofs < $line->l) { |
149 | if ($markofs < $line->l) { |
| 73 | # convert markofs form character to UTF-8 offset space |
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| 74 | { |
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| 75 | my $prefix = substr $text, 0, $markofs; |
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| 76 | utf8::encode $prefix; |
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| 77 | $markofs = length $prefix; |
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| 78 | } |
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| 79 | |
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| 80 | # not doing matches in unicode mode helps speed |
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| 81 | # enourmously here. working in utf-8 should be |
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| 82 | # equivalent due to the magic of utf-8 encoding. |
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| 83 | utf8::encode $text; |
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| 84 | study $text; # _really_ helps, too :) |
150 | study $text; # _really_ helps, too :) |
| 85 | |
151 | |
| 86 | for my $regex (@mark_patterns, @{ $self->{patterns} }) { |
152 | for my $regex (@mark_patterns, @{ $self->{patterns} }) { |
| 87 | while ($text =~ /$regex/g) { |
153 | while ($text =~ /$regex/g) { |
| 88 | if ($-[1] <= $markofs and $markofs <= $+[1]) { |
154 | if ($-[1] <= $markofs and $markofs <= $+[1]) { |
| … | |
… | |
| 108 | for (sort { $a->[1] <=> $b->[1] or $b->[0] <=> $a->[0] } @matches) { |
174 | for (sort { $a->[1] <=> $b->[1] or $b->[0] <=> $a->[0] } @matches) { |
| 109 | my ($ofs, $len) = @$_; |
175 | my ($ofs, $len) = @$_; |
| 110 | |
176 | |
| 111 | next if $len <= $curlen; |
177 | next if $len <= $curlen; |
| 112 | |
178 | |
| 113 | # convert back from UTF-8 offset space to character space |
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| 114 | { |
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| 115 | my $length = substr $text, $ofs, $len; |
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| 116 | utf8::decode $length; |
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| 117 | $len = length $length; |
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| 118 | } |
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| 119 | { |
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| 120 | my $prefix = substr $text, 0, $ofs; |
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| 121 | utf8::decode $prefix; |
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| 122 | $ofs = length $prefix; |
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| 123 | } |
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| 124 | |
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| 125 | $self->selection_beg ($line->coord_of ($ofs)); |
179 | $self->selection_beg ($line->coord_of ($ofs)); |
| 126 | $self->selection_end ($line->coord_of ($ofs + $len)); |
180 | $self->selection_end ($line->coord_of ($ofs + $len)); |
| 127 | return 1; |
181 | return 1; |
| 128 | } |
182 | } |
| 129 | |
183 | |
