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#! perl |
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|
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# Author: Tim Pope <rxvt-unicodeNOSPAM@tpope.org> |
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# Bob Farrell <robertanthonyfarrell@gmail.com> |
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# Emanuele Giaquinta |
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|
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#:META:RESOURCE:%.launcher:string:default launcher command |
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#:META:RESOURCE:%.button:string:the mouse button used to activate a match |
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#:META:RESOURCE:%.pattern.:string:extra pattern to match |
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#:META:RESOURCE:%.launcher.:string:custom launcher for pattern |
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#:META:RESOURCE:%.rend.:string:custom rendition for pattern |
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|
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=head1 NAME |
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|
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matcher - match strings in terminal output and change their rendition |
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|
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=head1 DESCRIPTION |
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|
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Uses per-line display filtering (C<on_line_update>) to underline text |
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matching a certain pattern and make it clickable. When clicked with the |
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mouse button specified in the C<matcher.button> resource (default 2, or |
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middle), the program specified in the C<matcher.launcher> resource |
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(default, the C<url-launcher> resource, C<sensible-browser>) will be started |
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with the matched text as first argument. The default configuration is |
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suitable for matching URLs and launching a web browser, like the |
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former "mark-urls" extension. |
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|
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The default pattern to match URLs can be overridden with the |
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C<matcher.pattern.0> resource, and additional patterns can be specified |
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with numbered patterns, in a manner similar to the "selection" extension. |
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The launcher can also be overridden on a per-pattern basis. |
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|
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It is possible to activate the most recently seen match or a list of matches |
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from the keyboard. Simply bind a keysym to "matcher:last" or |
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"matcher:list" as seen in the example below. |
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|
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The C<matcher:select> action enables a mode in which it is possible to |
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iterate over the matches using the keyboard and either activate them |
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or copy them to the clipboard. While the mode is active, normal terminal |
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input/output is suspended and the following bindings are recognized: |
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|
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=over |
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|
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=item C<Up> |
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|
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Search for a match upwards. |
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|
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=item C<Down> |
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|
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Search for a match downwards. |
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|
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=item C<Home> |
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|
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Jump to the topmost match. |
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|
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=item C<End> |
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|
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Jump to the bottommost match. |
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|
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=item C<Escape> |
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|
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Leave the mode and return to the point where search was started. |
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|
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=item C<Enter> |
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|
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Activate the current match. |
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|
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=item C<y> |
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|
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Copy the current match to the clipboard. |
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|
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=back |
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|
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It is also possible to cycle through the matches using a key |
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combination bound to the C<matcher:select> action. |
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|
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Example: load and use the matcher extension with defaults. |
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|
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URxvt.perl-ext: default,matcher |
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|
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Example: use a custom configuration. |
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|
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URxvt.url-launcher: sensible-browser |
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URxvt.keysym.C-Delete: matcher:last |
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URxvt.keysym.M-Delete: matcher:list |
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URxvt.matcher.button: 1 |
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URxvt.matcher.pattern.1: \\bwww\\.[\\w-]+\\.[\\w./?&@#-]*[\\w/-] |
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URxvt.matcher.pattern.2: \\B(/\\S+?):(\\d+)(?=:|$) |
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URxvt.matcher.launcher.2: gvim +$2 $1 |
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|
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=head2 Regex encoding/wide character matching |
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|
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Urxvt stores all text as unicode, in a special encoding that uses |
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one character/code point per column. For various reasons, the regular |
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expressions are matched directly against this encoding, which means there are a few things |
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you need to keep in mind: |
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|
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=over |
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|
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=item X resources/command line arguments are locale-encoded |
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|
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The regexes taken from the command line or resources will be converted |
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from locale encoding to unicode. This can change the number of code points |
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per character. |
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|
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=item Wide characters are column-padded with C<$urxvt::NOCHAR> |
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|
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Wide characters (such as kanji and sometimes tabs) are padded with |
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a special character value (C<$urxvt::NOCHAR>). That means that |
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constructs such as C<\w> or C<.> will only match part of a character, as |
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C<$urxvt::NOCHAR> is not matched by C<\w> and both only match the first |
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"column" of a wide character. |
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|
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That means you have to incorporate C<$urxvt::NOCHAR> into parts of regexes |
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that may match wide characters. For example, to match C<\w+> you might |
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want to use C<[\w$urxvt::NOCHAR]+> instead, and to match a single character |
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(C<.>) you might want to use C<.$urxvt::NOCHAR*> instead. |
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|
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=back |
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|
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=cut |
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|
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my $url = |
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qr{ |
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(?:https?://|ftp://|news://|mailto:|file://|\bwww\.) |
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[\w\-\@;\/?:&=%\$.+!*\x27,~#$urxvt::NOCHAR]* |
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( |
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\([\w\-\@;\/?:&=%\$.+!*\x27,~#$urxvt::NOCHAR]*\)| # Allow a pair of matched parentheses |
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[\w\-\@;\/?:&=%\$+*~] # exclude some trailing characters (heuristic) |
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)+ |
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}x; |
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|
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sub matchlist_key_press { |
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my ($self, $event, $keysym, $octets) = @_; |
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|
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delete $self->{overlay}; |
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$self->disable ("key_press"); |
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|
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my $i = ($keysym == 96 ? 0 : $keysym - 48); |
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if ($i >= 0 && $i < @{ $self->{matches} }) { |
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my @exec = @{ $self->{matches}[$i] }; |
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$self->exec_async (@exec[5 .. $#exec]); |
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} |
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|
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1 |
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} |
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|
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# backwards compat |
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sub on_user_command { |
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my ($self, $cmd) = @_; |
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|
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if ($cmd eq "matcher:list") { |
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$self->matchlist; |
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} elsif ($cmd eq "matcher:last") { |
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$self->most_recent; |
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} elsif ($cmd eq "matcher:select") { |
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$self->select_enter; |
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} elsif ($cmd eq "matcher") { |
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# for backward compatibility |
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$self->most_recent; |
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} |
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|
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() |
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} |
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|
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sub on_action { |
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my ($self, $action) = @_; |
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|
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if ($action eq "list") { |
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$self->matchlist; |
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} elsif ($action eq "last") { |
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$self->most_recent; |
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} elsif ($action eq "select") { |
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$self->select_enter; |
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} |
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|
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() |
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} |
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|
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sub matchlist { |
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my ($self) = @_; |
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|
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$self->{matches} = []; |
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my $row = $self->nrow - 1; |
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while ($row >= 0 && @{ $self->{matches} } < 10) { |
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my $line = $self->line ($row); |
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my @matches = $self->find_matches ($row); |
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|
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for (sort { $b->[0] <=> $a->[0] or $b->[1] <=> $a->[1] } @matches) { |
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push @{ $self->{matches} }, $_; |
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last if @{ $self->{matches} } == 10; |
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} |
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|
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$row = $line->beg - 1; |
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} |
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|
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return unless @{ $self->{matches} }; |
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|
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my $width = 0; |
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|
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my $i = 0; |
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for my $match (@{ $self->{matches} }) { |
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my $text = $match->[4]; |
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my $w = $self->strwidth ("$i-$text"); |
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|
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$width = $w if $w > $width; |
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$i++; |
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} |
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|
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$width = $self->ncol - 2 if $width > $self->ncol - 2; |
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|
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$self->{overlay} = $self->overlay (0, 0, $width, scalar (@{ $self->{matches} }), urxvt::OVERLAY_RSTYLE, 2); |
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my $i = 0; |
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for my $match (@{ $self->{matches} }) { |
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my $text = $match->[4]; |
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|
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$self->{overlay}->set (0, $i, "$i-$text"); |
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$i++; |
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} |
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|
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$self->enable (key_press => \&matchlist_key_press); |
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} |
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|
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sub most_recent { |
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my ($self) = shift; |
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my $row = $self->nrow - 1; |
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my @exec; |
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|
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while ($row >= $self->top_row) { |
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my $line = $self->line ($row); |
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@exec = $self->command_for ($row); |
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last if @exec; |
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|
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$row = $line->beg - 1; |
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} |
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|
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if (@exec) { |
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return $self->exec_async (@exec); |
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} |
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|
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() |
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} |
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|
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sub my_resource { |
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$_[0]->x_resource ("%.$_[1]") |
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} |
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|
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# turn a rendition spec in the resource into a sub that implements it on $_ |
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sub parse_rend { |
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my ($self, $str) = @_; |
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my ($mask, $fg, $bg, $failed) = $str ? urxvt::rend2mask($str) |
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: (urxvt::RS_Uline, undef, undef, []); |
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warn "Failed to parse rendition string: " . join(',', @$failed) if @$failed; |
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my @rend; |
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push @rend, sub { $_ |= $mask } if $mask; |
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push @rend, sub { $_ = urxvt::SET_FGCOLOR($_, $fg) } if defined $fg; |
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push @rend, sub { $_ = urxvt::SET_BGCOLOR($_, $bg) } if defined $bg; |
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sub { |
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for my $s ( @rend ) { &$s }; |
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} |
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} |
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|
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sub on_start { |
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my ($self) = @_; |
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|
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$self->{launcher} = $self->my_resource ("launcher") || $self->x_resource("url-launcher") || "sensible-browser"; |
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|
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$self->{button} = 2; |
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$self->{state} = 0; |
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if($self->{argv}[0] || $self->my_resource ("button")) { |
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my @mods = split '', $self->{argv}[0] || $self->my_resource ("button"); |
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for my $mod (@mods) { |
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if($mod =~ /^\d+$/) { |
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$self->{button} = $mod; |
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} elsif($mod eq "C") { |
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$self->{state} |= urxvt::ControlMask; |
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} elsif($mod eq "S") { |
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$self->{state} |= urxvt::ShiftMask; |
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} elsif($mod eq "M") { |
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$self->{state} |= $self->ModMetaMask; |
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} elsif($mod ne "-" && $mod ne " ") { |
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warn("$mod is invalid in $self->{_name}<$self->{argv}[0]>\n"); |
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} |
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} |
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} |
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|
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my @defaults = ($url); |
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my @matchers; |
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for (my $idx = 0; defined (my $res = $self->locale_decode ($self->my_resource ("pattern.$idx")) || $defaults[$idx]); $idx++) { |
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my $launcher = $self->my_resource ("launcher.$idx"); |
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$launcher =~ s/\$&|\$\{&\}/\${0}/g if $launcher; |
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my $rend = $self->parse_rend($self->my_resource ("rend.$idx")); |
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unshift @matchers, [qr($res)x,$launcher,$rend]; |
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} |
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$self->{matchers} = \@matchers; |
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|
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() |
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} |
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|
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sub on_line_update { |
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my ($self, $row) = @_; |
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|
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# fetch the line that has changed |
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my $line = $self->line ($row); |
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my $text = $line->t; |
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my $rend; |
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|
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# find all urls (if any) |
| 309 |
for my $matcher (@{$self->{matchers}}) { |
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while ($text =~ /$matcher->[0]/g) { |
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#print "$&\n"; |
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$rend ||= $line->r; |
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|
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# mark all characters as underlined. we _must_ not toggle underline, |
| 315 |
# as we might get called on an already-marked url. |
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&{$matcher->[2]} |
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for @{$rend}[$-[0] .. $+[0] - 1]; |
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} |
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} |
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|
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$line->r ($rend) if $rend; |
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|
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() |
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} |
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|
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sub valid_button { |
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my ($self, $event) = @_; |
| 328 |
my $mask = $self->ModLevel3Mask | $self->ModMetaMask |
| 329 |
| urxvt::ShiftMask | urxvt::ControlMask; |
| 330 |
return ($event->{button} == $self->{button} && |
| 331 |
($event->{state} & $mask) == $self->{state}); |
| 332 |
} |
| 333 |
|
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sub find_matches { |
| 335 |
my ($self, $row, $col) = @_; |
| 336 |
my $line = $self->line ($row); |
| 337 |
my $text = $line->t; |
| 338 |
my $off = $line->offset_of ($row, $col) if defined $col; |
| 339 |
|
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my @matches; |
| 341 |
for my $matcher (@{$self->{matchers}}) { |
| 342 |
my $launcher = $matcher->[1] || $self->{launcher}; |
| 343 |
while ($text =~ /$matcher->[0]/g) { |
| 344 |
my $match = substr $text, $-[0], $+[0] - $-[0]; |
| 345 |
my @begin = @-; |
| 346 |
my @end = @+; |
| 347 |
my @exec; |
| 348 |
|
| 349 |
if (!(defined $off) || ($-[0] <= $off && $+[0] >= $off)) { |
| 350 |
if ($launcher !~ /\$/) { |
| 351 |
@exec = ($launcher, $match); |
| 352 |
} else { |
| 353 |
# It'd be nice to just access a list like ($&,$1,$2...), |
| 354 |
# but alas, m//g behaves differently in list context. |
| 355 |
@exec = map { |
| 356 |
s{\$(\d+)|\$\{(\d+)\}}{ |
| 357 |
substr $text, $begin[$1 || $2], $end[$1 || $2] - $begin[$1 || $2] |
| 358 |
}egx; |
| 359 |
$_ |
| 360 |
} split /\s+/, $launcher; |
| 361 |
} |
| 362 |
|
| 363 |
push @matches, [ $line->coord_of ($begin[0]), $line->coord_of ($end[0]), $match, @exec ]; |
| 364 |
} |
| 365 |
} |
| 366 |
} |
| 367 |
|
| 368 |
@matches |
| 369 |
} |
| 370 |
|
| 371 |
sub command_for { |
| 372 |
my ($self, $row, $col) = @_; |
| 373 |
|
| 374 |
my @matches = $self->find_matches ($row, $col); |
| 375 |
if (@matches) { |
| 376 |
my @match = @{ $matches[0] }; |
| 377 |
return @match[5 .. $#match]; |
| 378 |
} |
| 379 |
|
| 380 |
() |
| 381 |
} |
| 382 |
|
| 383 |
sub on_button_press { |
| 384 |
my ($self, $event) = @_; |
| 385 |
|
| 386 |
if ( |
| 387 |
$self->valid_button ($event) |
| 388 |
&& (my @exec = $self->command_for ($event->{row}, $event->{col})) |
| 389 |
) { |
| 390 |
$self->{row} = $event->{row}; |
| 391 |
$self->{col} = $event->{col}; |
| 392 |
$self->{cmd} = \@exec; |
| 393 |
return 1; |
| 394 |
} else { |
| 395 |
delete $self->{row}; |
| 396 |
delete $self->{col}; |
| 397 |
delete $self->{cmd}; |
| 398 |
} |
| 399 |
|
| 400 |
() |
| 401 |
} |
| 402 |
|
| 403 |
sub on_button_release { |
| 404 |
my ($self, $event) = @_; |
| 405 |
|
| 406 |
my $row = delete $self->{row}; |
| 407 |
my $col = delete $self->{col}; |
| 408 |
my $cmd = delete $self->{cmd}; |
| 409 |
|
| 410 |
return if !defined $row; |
| 411 |
|
| 412 |
if ( |
| 413 |
$row == $event->{row} |
| 414 |
&& (abs $col-$event->{col}) < 2 |
| 415 |
&& (join "\x00", @$cmd) eq (join "\x00", $self->command_for ($row, $col)) |
| 416 |
) { |
| 417 |
if ($self->valid_button ($event)) { |
| 418 |
$self->exec_async (@$cmd); |
| 419 |
} |
| 420 |
} |
| 421 |
|
| 422 |
1; |
| 423 |
} |
| 424 |
|
| 425 |
sub select_enter { |
| 426 |
my ($self) = @_; |
| 427 |
|
| 428 |
$self->{view_start} = $self->view_start; |
| 429 |
$self->{pty_ev_events} = $self->pty_ev_events (urxvt::EV_NONE); |
| 430 |
$self->{cur_row} = $self->nrow - 1; |
| 431 |
|
| 432 |
$self->enable ( |
| 433 |
key_press => \&select_key_press, |
| 434 |
refresh_begin => \&select_refresh, |
| 435 |
refresh_end => \&select_refresh, |
| 436 |
); |
| 437 |
|
| 438 |
$self->{overlay} = $self->overlay (0, -1, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0); |
| 439 |
$self->{overlay}->set (0, 0, "match-select"); |
| 440 |
} |
| 441 |
|
| 442 |
sub select_leave { |
| 443 |
my ($self) = @_; |
| 444 |
|
| 445 |
$self->disable ("key_press", "refresh_begin", "refresh_end"); |
| 446 |
$self->pty_ev_events ($self->{pty_ev_events}); |
| 447 |
|
| 448 |
delete $self->{overlay}; |
| 449 |
delete $self->{matches}; |
| 450 |
delete $self->{id}; |
| 451 |
} |
| 452 |
|
| 453 |
sub select_search { |
| 454 |
my ($self, $dir, $row) = @_; |
| 455 |
|
| 456 |
while ($self->nrow > $row && $row >= $self->top_row) { |
| 457 |
my $line = $self->line ($row) |
| 458 |
or last; |
| 459 |
|
| 460 |
my @matches = $self->find_matches ($row); |
| 461 |
if (@matches) { |
| 462 |
@matches = sort { $a->[0] <=> $b->[0] or $a->[1] <=> $b->[1] } @matches; |
| 463 |
$self->{matches} = \@matches; |
| 464 |
$self->{cur_row} = $row; |
| 465 |
$self->{id} = $dir < 0 ? @{ $self->{matches} } - 1 : 0; |
| 466 |
$self->view_start ($row - ($self->nrow >> 1)); |
| 467 |
$self->want_refresh; |
| 468 |
return 1; |
| 469 |
} |
| 470 |
|
| 471 |
$row = $dir < 0 ? $line->beg - 1 : $line->end + 1; |
| 472 |
} |
| 473 |
|
| 474 |
$self->scr_bell; |
| 475 |
|
| 476 |
() |
| 477 |
} |
| 478 |
|
| 479 |
sub select_refresh { |
| 480 |
my ($self) = @_; |
| 481 |
|
| 482 |
return unless $self->{matches}; |
| 483 |
|
| 484 |
my $cur = $self->{matches}[$self->{id}]; |
| 485 |
$self->scr_xor_span (@$cur[0 .. 3], urxvt::RS_RVid); |
| 486 |
|
| 487 |
() |
| 488 |
} |
| 489 |
|
| 490 |
sub select_key_press { |
| 491 |
my ($self, $event, $keysym, $string) = @_; |
| 492 |
|
| 493 |
if ($keysym == 0xff0d || $keysym == 0xff8d) { # enter |
| 494 |
if ($self->{matches}) { |
| 495 |
my @match = @{ $self->{matches}[$self->{id}] }; |
| 496 |
$self->exec_async (@match[5 .. $#match]); |
| 497 |
} |
| 498 |
$self->select_leave; |
| 499 |
} elsif ($keysym == 0x79) { # y |
| 500 |
if ($self->{matches}) { |
| 501 |
$self->selection ($self->{matches}[$self->{id}][4], 1); |
| 502 |
$self->selection_grab (urxvt::CurrentTime, 1); |
| 503 |
} |
| 504 |
$self->select_leave; |
| 505 |
} elsif ($keysym == 0xff1b) { # escape |
| 506 |
$self->view_start ($self->{view_start}); |
| 507 |
$self->select_leave; |
| 508 |
} elsif ($keysym == 0xff50) { # home |
| 509 |
$self->select_search (+1, $self->top_row) |
| 510 |
} elsif ($keysym == 0xff57) { # end |
| 511 |
$self->select_search (-1, $self->nrow - 1) |
| 512 |
} elsif ($keysym == 0xff52) { # up |
| 513 |
if ($self->{id} > 0) { |
| 514 |
$self->{id}--; |
| 515 |
$self->want_refresh; |
| 516 |
} else { |
| 517 |
my $line = $self->line ($self->{cur_row}); |
| 518 |
$self->select_search (-1, $line->beg - 1) |
| 519 |
if $line->beg > $self->top_row; |
| 520 |
} |
| 521 |
} elsif ($keysym == 0xff54) { # down |
| 522 |
if ($self->{id} < @{ $self->{matches} } - 1) { |
| 523 |
$self->{id}++; |
| 524 |
$self->want_refresh; |
| 525 |
} else { |
| 526 |
my $line = $self->line ($self->{cur_row}); |
| 527 |
$self->select_search (+1, $line->end + 1) |
| 528 |
if $line->end < $self->nrow; |
| 529 |
} |
| 530 |
} elsif ($self->lookup_keysym ($keysym, $event->{state}) eq "matcher:select") { |
| 531 |
if ($self->{id} > 0) { |
| 532 |
$self->{id}--; |
| 533 |
$self->want_refresh; |
| 534 |
} else { |
| 535 |
my $line = $self->line ($self->{cur_row}); |
| 536 |
$self->select_search (-1, $self->nrow - 1) |
| 537 |
unless $self->select_search (-1, $line->beg - 1); |
| 538 |
} |
| 539 |
} |
| 540 |
|
| 541 |
1 |
| 542 |
} |
| 543 |
|
| 544 |
# vim:set sw=3 sts=3 et: |
