IkiWiki/Plugin/map.pm



#!/usr/bin/perl
#
# Produce a hierarchical map of links.
#
# by Alessandro Dotti Contra <alessandro@hyboria.org>
#
# Revision: 0.2
package IkiWiki::Plugin::map;

use warnings;
use strict;
use IkiWiki;

sub import { #{{{
    IkiWiki::hook(type => "preprocess", id => "map",
        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});
    
    # Get all the items to map.
    my @mapitems = ();
    foreach my $page (keys %IkiWiki::links) {
        if (IkiWiki::pagespec_match($page, $params{pages})) {
            push @mapitems, $page;
        }
    }

    # Create the map.
    my $indent=0;
    my $openli=0;
    my $map = "<div class='map'>\n";
    $map .= "<ul>\n";
    foreach my $item (sort @mapitems) {
        my $depth = ($item =~ tr/\//\//);
        while ($depth < $indent) {
            $indent--;
            $map.="</li></ul>\n";
        }
        while ($depth > $indent) {
            $indent++;
            $map.="<ul>\n";
            $openli=0;
        }
        $map .= "</li>\n" if $openli;
        $map .= "<li>"
                .IkiWiki::htmllink($params{page}, $params{destpage}, $item) ."\n";
        $openli=1;
    }
    while ($indent > 0) {
        $indent--;
        $map.="</li></ul>\n";
    }
    $map .= "</li></ul>\n";
    $map .= "</div>\n";
    return $map;
} # }}}

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