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#!/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};
my $common_prefix;
# Get all the items to map.
my %mapitems;
foreach my $page (keys %pagesources) {
if (pagespec_match($page, $params{pages}, location => $params{page})) {
$mapitems{$page}=1;
# Check for a common prefix.
if (! defined $common_prefix) {
$common_prefix=$page;
}
elsif (length $common_prefix &&
$page !~ /^\Q$common_prefix\E(\/|$)/) {
my @a=split(/\//, $page);
my @b=split(/\//, $common_prefix);
$common_prefix="";
while (@a && @b && $a[0] eq $b[0]) {
$common_prefix.=shift(@a);
shift @b;
}
}
}
}
# Common prefix should not be a page in the map.
while (defined $common_prefix && length $common_prefix &&
exists $mapitems{$common_prefix}) {
$common_prefix=IkiWiki::dirname($common_prefix);
}
# 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 ", keys %mapitems));
# Create the map.
my $parent="";
my $indent=0;
my $openli=0;
my $dummy=0;
my $map = "<div class='map'>\n<ul>\n";
foreach my $item (sort keys %mapitems) {
$item=~s/^\Q$common_prefix\E\///
if defined $common_prefix && length $common_prefix;
my $depth = ($item =~ tr/\//\//) + 1;
my $baseitem=IkiWiki::dirname($item);
while (length $parent && length $baseitem && $baseitem !~ /^\Q$parent\E(\/|$)/) {
$parent=IkiWiki::dirname($parent);
last if !$dummy && length $parent && $baseitem =~ /^\Q$parent\E(\/|$)/;
$indent--;
$map .= "</li>\n";
if ($indent > 0) {
$map .= "</ul>\n";
}
}
$dummy=0;
while ($depth < $indent) {
$indent--;
$map .= "</li>\n";
if ($indent > 0) {
$map .= "</ul>\n";
}
}
my @bits=split("/", $item);
my $p="";
$p.="/".shift(@bits) for 1..$indent;
while ($depth > $indent) {
$indent++;
if ($indent > 1) {
$map .= "<ul>\n";
}
if ($depth > $indent) {
$dummy=1;
$p.="/".shift(@bits);
$map .= "<li>"
.htmllink($params{page}, $params{destpage}, $p, class => "mapparent")
."\n";
$openli=1;
}
else {
$openli=0;
}
}
$map .= "</li>\n" if $openli;
$map .= "<li>"
.htmllink($params{page}, $params{destpage},
"/".$common_prefix."/".$item, class => "mapitem")
."\n";
$openli=1;
$parent=$item;
}
while ($indent > 0) {
$indent--;
$map .= "</li>\n</ul>\n";
}
$map .= "</div>\n";
return $map;
} # }}}
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