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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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|
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#:META:RESOURCE:%.launcher:string:default launcher command |
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#:META:RESOURCE:%.button:string:the button, yeah |
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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 rednition 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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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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=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,~#]* |
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( |
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\([\w\-\@;\/?:&=%\$.+!*\x27,~#]*\)| # 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 on_key_press { |
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my ($self, $event, $keysym, $octets) = @_; |
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|
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return unless $self->{overlay}; |
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|
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delete $self->{overlay}; |
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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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shift @exec; |
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$self->exec_async (@exec); |
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} |
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|
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1 |
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} |
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|
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# backwards compat |
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sub on_user_command { |
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my ($self, $cmd) = @_; |
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|
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if ($cmd =~ s/^matcher:list\b//) { |
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$self->matchlist; |
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} else { |
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if ($cmd =~ s/^matcher:last\b//) { |
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$self->most_recent; |
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} elsif ($cmd =~ s/^matcher\b//) { |
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# for backward compatibility |
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$self->most_recent; |
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} |
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} |
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|
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() |
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} |
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|
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sub on_action { |
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my ($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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$self->most_recent; |
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} |
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|
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() |
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} |
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|
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sub matchlist { |
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my ($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, 0); |
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|
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for (sort { $b->[0] <=> $a->[0] } @matches) { |
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shift @$_; |
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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->[0]; |
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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 = $match->[0]; |
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|
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$self->{overlay}->set (0, $i, "$i-$text"); |
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$i++; |
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} |
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|
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} |
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|
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sub most_recent { |
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my ($self) = shift; |
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my $row = $self->nrow; |
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my @exec; |
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while($row-- > $self->top_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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if(@exec) { |
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return $self->exec_async (@exec); |
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} |
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() |
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} |
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|
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sub my_resource { |
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$_[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->{matches} = []; |
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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 = $self->my_resource ("pattern.$idx") || $defaults[$idx]); $idx++) { |
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$res = $self->locale_decode ($res); |
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utf8::encode $res; |
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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 $i = 0; |
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|
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# find all urls (if any) |
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for my $matcher (@{$self->{matchers}}) { |
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while ($text =~ /$matcher->[0]/g) { |
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#print "$&\n"; |
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my $rend = $line->r; |
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|
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# mark all characters as underlined. we _must_ not toggle underline, |
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# as we might get called on an already-marked url. |
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&{$matcher->[2]} |
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for @{$rend}[ $-[0] .. $+[0] - 1]; |
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|
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$line->r ($rend); |
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} |
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} |
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|
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() |
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} |
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|
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sub valid_button { |
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my ($self, $event) = @_; |
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my $mask = $self->ModLevel3Mask | $self->ModMetaMask |
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| urxvt::ShiftMask | urxvt::ControlMask; |
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return ($event->{button} == $self->{button} && |
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($event->{state} & $mask) == $self->{state}); |
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} |
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|
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sub find_matches { |
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my ($self, $row, $col) = @_; |
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my $line = $self->line ($row); |
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my $text = $line->t; |
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|
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my @matches; |
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for my $matcher (@{$self->{matchers}}) { |
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my $launcher = $matcher->[1] || $self->{launcher}; |
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while ($text =~ /$matcher->[0]/g) { |
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my $match = substr $text, $-[0], $+[0] - $-[0]; |
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my @begin = @-; |
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my @end = @+; |
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my @exec; |
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|
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if (!defined($col) || ($-[0] <= $col && $+[0] >= $col)) { |
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if ($launcher !~ /\$/) { |
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@exec = ($launcher, $match); |
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} else { |
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# It'd be nice to just access a list like ($&,$1,$2...), |
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# but alas, m//g behaves differently in list context. |
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@exec = map { s/\$(\d+)|\$\{(\d+)\}/ |
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substr $text, $begin[$1 || $2], $end[$1 || $2] - $begin[$1 || $2]) |
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/egx; $_ } split /\s+/, $launcher; |
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} |
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|
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push @matches, [ $begin[0], $match, @exec ]; |
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} |
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} |
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} |
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|
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@matches; |
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} |
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|
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sub command_for { |
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my ($self, $row, $col) = @_; |
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|
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my @matches = $self->find_matches ($row, $col); |
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if (@matches) { |
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my @match = @{ $matches[0] }; |
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return @match[2 .. $#match]; |
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} |
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|
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() |
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} |
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|
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sub on_button_press { |
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my ($self, $event) = @_; |
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if($self->valid_button($event) |
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&& (my @exec = $self->command_for($event->{row},$event->{col}))) { |
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$self->{row} = $event->{row}; |
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$self->{col} = $event->{col}; |
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$self->{cmd} = \@exec; |
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return 1; |
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} else { |
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delete $self->{row}; |
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delete $self->{col}; |
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delete $self->{cmd}; |
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} |
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|
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() |
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} |
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|
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sub on_button_release { |
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my ($self, $event) = @_; |
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|
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my $row = delete $self->{row}; |
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my $col = delete $self->{col}; |
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my $cmd = delete $self->{cmd}; |
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|
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return if !defined $row; |
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|
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if($row == $event->{row} && abs($col-$event->{col}) < 2 |
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&& join("\x00", @$cmd) eq join("\x00", $self->command_for($row,$col))) { |
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if($self->valid_button($event)) { |
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|
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$self->exec_async (@$cmd); |
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|
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} |
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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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# vim:set sw=3 sts=3 et: |
