path: root/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 2.00;

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

sub preprocess (@) { #{{{
    my %params=@_;
    $params{pages}="*" unless defined $params{pages};
    
    # Get all the items to map.
    my @mapitems = ();
    foreach my $page (keys %pagesources) {
        if (pagespec_match($page, $params{pages}, location => $params{page})) {
            push @mapitems, "/".$page;
        }
    }

    # Needs to update whenever a page is added or removed, so
    # register a dependency.
    add_depends($params{page}, $params{pages});
    # Explicitly add all currently shown pages, to detect when pages
    # are removed.
    add_depends($params{page}, join(" or ", @mapitems));

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

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