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[[!template id=plugin name=headinganchors author="[[PaulWise]]"]]
This is a simple plugin to add ids (which will serve as [[anchor]]s) to all headings, based on their text. It
works as a postprocessing filter, allowing it to work on mdwn, wiki, html,
rst and any other format that produces html. The code is available here:
#!/usr/bin/perl
# quick HTML heading id adder by Paul Wise
package IkiWiki::Plugin::headinganchors;
use warnings;
use strict;
use IkiWiki 2.00;
sub import {
hook(type => "sanitize", id => "headinganchors", call => \&headinganchors);
}
sub text_to_anchor {
my $str = shift;
$str =~ s/^\s+//;
$str =~ s/\s+$//;
$str = lc($str);
$str =~ s/[&\?"\'\.,\(\)!]//mig;
$str =~ s/[^a-z]/_/mig;
return $str;
}
sub headinganchors (@) {
my %params=@_;
my $content=$params{content};
$content=~s{<h([0-9])>([^>]*)</h([0-9])>}{'<h'.$1.' id="'.text_to_anchor($2).'">'.$2.'</h'.$3.'>'}gie;
return $content;
}
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