IkiWiki/Plugin/map.pm

   1 #!/usr/bin/perl
   2 #
   3 # Produce a hierarchical map of links.
   4 #
   5 # by Alessandro Dotti Contra <alessandro@hyboria.org>
   6 #
   7 # Revision: 0.2
   8 package IkiWiki::Plugin::map;
   9
  10 use warnings;
  11 use strict;
  12 use IkiWiki 2.00;
  13
  14 sub import {
  15         hook(type => "getsetup", id => "map", call => \&getsetup);
  16         hook(type => "preprocess", id => "map", call => \&preprocess);
  17 }
  18
  19 sub getsetup () {
  20         return
  21                 plugin => {
  22                         safe => 1,
  23                         rebuild => undef,
  24                 },
  25 }
  26
  27 sub preprocess (@) {
  28         my %params=@_;
  29         $params{pages}="*" unless defined $params{pages};
  30
  31         my $common_prefix;
  32
  33         # Get all the items to map.
  34         my %mapitems;
  35         foreach my $page (keys %pagesources) {
  36                 if (pagespec_match($page, $params{pages}, location => $params{page})) {
  37                         if (exists $params{show} &&
  38                             exists $pagestate{$page} &&
  39                             exists $pagestate{$page}{meta}{$params{show}}) {
  40                                 $mapitems{$page}=$pagestate{$page}{meta}{$params{show}};
  41                         }
  42                         else {
  43                                 $mapitems{$page}='';
  44                         }
  45                         # Check for a common prefix.
  46                         if (! defined $common_prefix) {
  47                                 $common_prefix=$page;
  48                         }
  49                         elsif (length $common_prefix &&
  50                                $page !~ /^\Q$common_prefix\E(\/|$)/) {
  51                                 my @a=split(/\//, $page);
  52                                 my @b=split(/\//, $common_prefix);
  53                                 $common_prefix="";
  54                                 while (@a && @b && $a[0] eq $b[0]) {
  55                                         if (length $common_prefix) {
  56                                                 $common_prefix.="/";
  57                                         }
  58                                         $common_prefix.=shift(@a);
  59                                         shift @b;
  60                                 }
  61                         }
  62                 }
  63         }
  64
  65         # Common prefix should not be a page in the map.
  66         while (defined $common_prefix && length $common_prefix &&
  67                exists $mapitems{$common_prefix}) {
  68                 $common_prefix=IkiWiki::dirname($common_prefix);
  69         }
  70
  71         # Needs to update whenever a page is added or removed (or in some
  72         # cases, when its content changes, if show=title), so register a
  73         # dependency.
  74         add_depends($params{page}, $params{pages});
  75         # Explicitly add all currently shown pages, to detect when pages
  76         # are removed.
  77         add_depends($params{page}, join(" or ", keys %mapitems));
  78
  79         # Create the map.
  80         my $parent="";
  81         my $indent=0;
  82         my $openli=0;
  83         my $addparent="";
  84         my $map = "<div class='map'>\n<ul>\n";
  85         foreach my $item (sort keys %mapitems) {
  86                 my @linktext = (length $mapitems{$item} ? (linktext => $mapitems{$item}) : ());
  87                 $item=~s/^\Q$common_prefix\E\///
  88                         if defined $common_prefix && length $common_prefix;
  89                 my $depth = ($item =~ tr/\//\//) + 1;
  90                 my $baseitem=IkiWiki::dirname($item);
  91                 while (length $parent && length $baseitem && $baseitem !~ /^\Q$parent\E(\/|$)/) {
  92                         $parent=IkiWiki::dirname($parent);
  93                         last if length $addparent && $baseitem =~ /^\Q$addparent\E(\/|$)/;
  94                         $addparent="";
  95                         $indent--;
  96                         $map .= "</li>\n";
  97                         if ($indent > 0) {
  98                                 $map .= "</ul>\n";
  99                         }
 100                 }
 101                 while ($depth < $indent) {
 102                         $indent--;
 103                         $map .= "</li>\n";
 104                         if ($indent > 0) {
 105                                 $map .= "</ul>\n";
 106                         }
 107                 }
 108                 my @bits=split("/", $item);
 109                 my $p="";
 110                 $p.="/".shift(@bits) for 1..$indent;
 111                 while ($depth > $indent) {
 112                         $indent++;
 113                         if ($indent > 1) {
 114                                 $map .= "<ul>\n";
 115                         }
 116                         if ($depth > $indent) {
 117                                 $p.="/".shift(@bits);
 118                                 $addparent=$p;
 119                                 $addparent=~s/^\///;
 120                                 $map .= "<li>"
 121                                         .htmllink($params{page}, $params{destpage},
 122                                                  "/".$common_prefix.$p, class => "mapparent",
 123                                                  noimageinline => 1)
 124                                         ."\n";
 125                                 $openli=1;
 126                         }
 127                         else {
 128                                 $openli=0;
 129                         }
 130                 }
 131                 $map .= "</li>\n" if $openli;
 132                 $map .= "<li>"
 133                         .htmllink($params{page}, $params{destpage},
 134                                 "/".$common_prefix."/".$item,
 135                                 @linktext,
 136                                 class => "mapitem", noimageinline => 1)
 137                         ."\n";
 138                 $openli=1;
 139                 $parent=$item;
 140         }
 141         while ($indent > 0) {
 142                 $indent--;
 143                 $map .= "</li>\n</ul>\n";
 144         }
 145         $map .= "</div>\n";
 146         return $map;
 147 }
 148
 149 1