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#! perl |
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#:META:RESOURCE:%.:string:autotransform expression |
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=head1 NAME |
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selection-autotransform - automatically transform select text |
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=head1 DESCRIPTION |
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This selection allows you to do automatic transforms on a selection |
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whenever a selection is made. |
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It works by specifying perl snippets (most useful is a single C<s///> |
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operator) that modify C<$_> as resources: |
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|
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URxvt.selection-autotransform.0: transform |
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URxvt.selection-autotransform.1: transform |
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... |
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|
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For example, the following will transform selections of the form |
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C<filename:number>, often seen in compiler messages, into C<vi +$filename |
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$word>: |
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URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/ |
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And this example matches the same,but replaces it with vi-commands you can |
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paste directly into your (vi :) editor: |
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URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/ |
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Of course, this can be modified to suit your needs and your editor :) |
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To expand the example above to typical perl error messages ("XXX at |
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FILENAME line YYY."), you need a slightly more elaborate solution: |
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URxvt.selection.pattern-0: ( at .*? line \\d+[,.]) |
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URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/ |
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The first line tells the selection code to treat the unchanging part of |
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every error message as a selection pattern, and the second line transforms |
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the message into vi commands to load the file. |
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=cut |
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sub msg { |
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my ($self, $msg) = @_; |
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my $overlay = $self->overlay (0, 0, $self->strwidth ($msg), 1); |
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$overlay->set (0, 0, $msg); |
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$self->{timer} = urxvt::timer->new->after (2)->cb (sub { |
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delete $self->{timer}; |
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undef $overlay; |
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}); |
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} |
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sub on_init { |
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my ($self) = @_; |
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for (my $idx = 0; defined (my $res = $self->x_resource ("%.$idx")); $idx++) { |
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$res = $self->locale_decode ($res); |
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my $transform = eval "sub { $res }"; |
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if ($transform) { |
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push @{ $self->{transforms} }, $transform; |
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} else { |
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warn "$res: $@"; |
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} |
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} |
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$self->{enabled} = 1; |
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push @{ $self->{term}{option_popup_hook} }, sub { |
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("autotransform" => $self->{enabled}, sub { $self->{enabled} = shift }) |
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}; |
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() |
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} |
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sub on_sel_grab { |
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my ($self) = @_; |
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$self->{enabled} |
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or return; |
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my $text = $self->selection; |
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local $_ = $text; |
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for my $transform (@{ $self->{transforms} }) { |
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$transform->(); |
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if ($text ne $_) { |
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$self->selection ($_); |
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s/[\x00-\x1f\x80-\x9f]/ยท/g; |
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$self->msg ($self->special_encode ("auto-transformed to $_")); |
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last; |
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} |
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} |
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|
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() |
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} |
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