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/cvs/rxvt-unicode/src/perl/selection
Revision: 1.32
Committed: Sat Jan 21 21:20:34 2006 UTC (18 years, 4 months ago) by root
Branch: MAIN
Changes since 1.31: +39 -18 lines
Log Message:
*** empty log message ***

File Contents

# User Rev Content
1 root 1.4 #! perl
2    
3 elmex 1.1 sub on_keyboard_command {
4 root 1.7 my ($self, $cmd) = @_;
5 elmex 1.2
6     $cmd eq "selection:rot13"
7 root 1.7 and $self->selection (map { y/A-Za-z/N-ZA-Mn-za-m/; $_ } $self->selection);
8 elmex 1.3
9     ()
10 elmex 1.1 }
11 root 1.5
12 root 1.23 sub on_init {
13     my ($self) = @_;
14    
15     for (my $idx = 0; defined (my $res = $self->x_resource ("selection.pattern-$idx")); $idx++) {
16     no re 'eval'; # just to be sure
17 root 1.31 $res = $self->locale_decode ($res);
18     utf8::encode $res;
19 root 1.23 push @{ $self->{patterns} }, qr/$res/;
20     }
21    
22     ()
23     }
24    
25 root 1.16 # "find interetsing things"-patterns
26 root 1.15 my @mark_patterns = (
27 root 1.24 # common types of "parentheses"
28 root 1.25 qr{ (?<![^[:space:]]) ‘ ([^‘’]+) ’ (?![^[:space]]) }x,
29     qr{ (?<![^[:space:]]) ` ([^`']+) ' (?![^[:space]]) }x,
30     qr{ (?<![^[:space:]]) (" [^[:space:]] [^"]* ") }x,
31     qr{ (" [^"]* [^[:space:]] ") (?![^[:space]]) }x,
32     qr{ \< ([^<>[:space:]]+) \> }x,
33     qr{ \{ ([^{}[:space:]]+) \} }x,
34     qr{ \[ ([^{}[:space:]]+) \] }x,
35     qr{ \( ([^()[:space:]]+) \) }x,
36 root 1.14
37 root 1.20 # urls, just a heuristic
38     qr{(
39     (?:https?|ftp|news|mailto|file)://[ab-zA-Z0-9\-\@;\/?:&=%\$_.+!*\x27(),~]+
40     [ab-zA-Z0-9\-\@;\/?:&=%\$_+!*\x27()~] # exclude some trailing characters (heuristic)
41     )}x,
42    
43 root 1.17 # shell-like argument quoting, basically always matches
44 root 1.11 qr{\G [\ \t|&;<>()] *(
45 root 1.9 (?:
46 root 1.11 [^\\"'\ \t|&;<>()]+
47 root 1.9 | \\.
48 root 1.13 | " (?: [^\\"]+ | \\. )* "
49 root 1.9 | ' [^']* '
50     )+
51 root 1.14 )}x,
52 root 1.8 );
53    
54 root 1.16 # "correct obvious? crap"-patterns
55 root 1.15 my @simplify_patterns = (
56     qr{^"([^\\"'\ \t|&;<>()*?]+)"$}, # "simple" => simple
57 root 1.16 qr{^(.*)[,\-]$}, # strip off trailing , and -
58 root 1.15 );
59 root 1.14
60 root 1.6 sub on_sel_extend {
61 root 1.21 my ($self, $time) = @_;
62 root 1.8
63     my ($row, $col) = $self->selection_mark;
64     my $line = $self->line ($row);
65     my $text = $line->t;
66 root 1.20 my $markofs = $line->offset_of ($row, $col);
67     my $curlen = $line->offset_of ($self->selection_end)
68     - $line->offset_of ($self->selection_beg);
69    
70     my @matches;
71 root 1.8
72 root 1.32 if ($markofs < $line->l) {
73     # convert markofs form character to UTF-8 offset space
74     {
75     my $prefix = substr $text, 0, $markofs;
76     utf8::encode $prefix;
77     $markofs = length $prefix;
78     }
79    
80     # not doing matches in unicode mode helps speed
81     # enourmously here. working in utf-8 should be
82     # equivalent due to the magic of utf-8 encoding.
83     utf8::encode $text;
84     study $text; # _really_ helps, too :)
85    
86     for my $regex (@mark_patterns, @{ $self->{patterns} }) {
87     while ($text =~ /$regex/g) {
88     if ($-[1] <= $markofs and $markofs <= $+[1]) {
89     my $ofs = $-[1];
90     my $match = $1;
91    
92     for my $regex (@simplify_patterns) {
93     if ($match =~ $regex) {
94     $match = $1;
95     $ofs += $-[1];
96     }
97 root 1.15 }
98 root 1.32
99     push @matches, [$ofs, length $match];
100 root 1.15 }
101 root 1.8 }
102     }
103     }
104    
105 root 1.21 # whole line
106     push @matches, [0, ($line->end - $line->beg + 1) * $self->ncol];
107    
108 root 1.20 for (sort { $a->[1] <=> $b->[1] or $b->[0] <=> $a->[0] } @matches) {
109     my ($ofs, $len) = @$_;
110    
111     next if $len <= $curlen;
112    
113 root 1.32 # convert back from UTF-8 offset space to character space
114     {
115     my $length = substr $text, $ofs, $len;
116     utf8::decode $length;
117     $len = length $length;
118     }
119     {
120     my $prefix = substr $text, 0, $ofs;
121     utf8::decode $prefix;
122     $ofs = length $prefix;
123     }
124    
125 root 1.20 $self->selection_beg ($line->coord_of ($ofs));
126     $self->selection_end ($line->coord_of ($ofs + $len));
127     return 1;
128     }
129    
130 root 1.21 ()
131 root 1.5 }