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   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 3.00;
  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                         section => "widget",
  25                 },
  26 }
  27
  28 sub preprocess (@) {
  29         my %params=@_;
  30         $params{pages}="*" unless defined $params{pages};
  31
  32         # Needs to update whenever a page is added or removed (or in some
  33         # cases, when its content changes, if show= is specified).
  34         my $deptype=deptype(exists $params{show} ? "content" : "presence");
  35
  36         my $common_prefix;
  37
  38         # Get all the items to map.
  39         my %mapitems;
  40         foreach my $page (pagespec_match_list($params{page}, $params{pages},
  41                                         deptype => $deptype)) {
  42                 if (exists $params{show} &&
  43                     exists $pagestate{$page} &&
  44                     exists $pagestate{$page}{meta}{$params{show}}) {
  45                         $mapitems{$page}=$pagestate{$page}{meta}{$params{show}};
  46                 }
  47                 else {
  48                         $mapitems{$page}='';
  49                 }
  50                 # Check for a common prefix.
  51                 if (! defined $common_prefix) {
  52                         $common_prefix=$page;
  53                 }
  54                 elsif (length $common_prefix &&
  55                        $page !~ /^\Q$common_prefix\E(\/|$)/) {
  56                         my @a=split(/\//, $page);
  57                         my @b=split(/\//, $common_prefix);
  58                         $common_prefix="";
  59                         while (@a && @b && $a[0] eq $b[0]) {
  60                                 if (length $common_prefix) {
  61                                         $common_prefix.="/";
  62                                 }
  63                                 $common_prefix.=shift(@a);
  64                                 shift @b;
  65                         }
  66                 }
  67         }
  68
  69         # Common prefix should not be a page in the map.
  70         while (defined $common_prefix && length $common_prefix &&
  71                exists $mapitems{$common_prefix}) {
  72                 $common_prefix=IkiWiki::dirname($common_prefix);
  73         }
  74
  75         # Create the map.
  76         my $parent="";
  77         my $indent=0;
  78         my $openli=0;
  79         my $addparent="";
  80         my $map = "<div class='map'>\n";
  81
  82         if (! keys %mapitems) {
  83                 # return empty div for empty map
  84                 $map .= "</div>\n";
  85                 return $map;
  86         }
  87         else {
  88                 $map .= "<ul>\n";
  89         }
  90
  91         foreach my $item (sort keys %mapitems) {
  92                 my @linktext = (length $mapitems{$item} ? (linktext => $mapitems{$item}) : ());
  93                 $item=~s/^\Q$common_prefix\E\///
  94                         if defined $common_prefix && length $common_prefix;
  95                 my $depth = ($item =~ tr/\//\//) + 1;
  96                 my $baseitem=IkiWiki::dirname($item);
  97                 my $parentbase=IkiWiki::dirname($parent);
  98                 while (length $parentbase && length $baseitem && $baseitem !~ /^\Q$parentbase\E(\/|$)/) {
  99                         $parentbase=IkiWiki::dirname($parentbase);
 100                         last if length $addparent && $baseitem =~ /^\Q$addparent\E(\/|$)/;
 101                         $addparent="";
 102                         $indent--;
 103                         $map .= "</li>\n";
 104                         if ($indent > 0) {
 105                                 $map .= "</ul>\n";
 106                         }
 107                 }
 108                 while ($depth < $indent) {
 109                         $indent--;
 110                         $map .= "</li>\n";
 111                         if ($indent > 0) {
 112                                 $map .= "</ul>\n";
 113                         }
 114                 }
 115                 my @bits=split("/", $item);
 116                 my $p="";
 117                 $indent++  unless length $parent;
 118                 $p.="/".shift(@bits) for 1..$indent;
 119                 while ($depth > $indent) {
 120                         if (@bits && !(length $parent && "/$parent" eq $p)) {
 121                                 $addparent=$p;
 122                                 $addparent=~s/^\///;
 123                                 $map .= "<li>"
 124                                         .htmllink($params{page}, $params{destpage},
 125                                                  "/".$common_prefix.$p, class => "mapparent",
 126                                                  noimageinline => 1)
 127                                         ."\n";
 128                                 $openli=1;
 129                         }
 130                         else {
 131                                 $openli=0;
 132                         }
 133                         $indent++;
 134                         $p.="/".shift(@bits) if @bits;
 135                         if ($indent > 1) {
 136                                 $map .= "<ul>\n";
 137                         }
 138                 }
 139                 $map .= "</li>\n" if $openli;
 140                 $map .= "<li>"
 141                         .htmllink($params{page}, $params{destpage},
 142                                 "/".$common_prefix."/".$item,
 143                                 @linktext,
 144                                 class => "mapitem", noimageinline => 1)
 145                         ."\n";
 146                 $openli=1;
 147                 $parent=$item;
 148         }
 149         while ($indent > 0) {
 150                 $indent--;
 151                 $map .= "</li>\n</ul>\n";
 152         }
 153         $map .= "</div>\n";
 154         return $map;
 155 }
 156
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