IkiWiki/Plugin/brokenlinks.pm



#!/usr/bin/perl
# Provides a list of broken links.
package IkiWiki::Plugin::brokenlinks;

use warnings;
use strict;
use IkiWiki;

sub import { #{{{
    IkiWiki::hook(type => "preprocess", id => "brokenlinks",
        call => \&preprocess);
} # }}}

sub preprocess (@) { #{{{
    my %params=@_;
    $params{pages}="*" unless defined $params{pages};
    
    # Needs to update whenever a page is added or removed, so
    # register a dependency.
    IkiWiki::add_depends($params{page}, $params{pages});
    
    my @broken;
    foreach my $page (%IkiWiki::links) {
        if (IkiWiki::globlist_match($page, $params{pages})) {
            foreach my $link (@{$IkiWiki::links{$page}}) {
                next if $link =~ /.*\/discussion/i && $IkiWiki::config{discussion};
                my $bestlink=IkiWiki::bestlink($page, $link);
                next if length $bestlink;
                push @broken,
                    IkiWiki::htmllink($page, $link, 1).
                    " in ".
                    IkiWiki::htmllink($params{page}, $page, 1);
            }
        }
    }
    
    return "There are no broken links!" unless @broken;
    my %seen;
    return "<ul>\n".join("\n", map { "<li>$_</li>" } grep { ! $seen{$_}++ } sort @broken)."</ul>\n";
} # }}}

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