IkiWiki/Plugin/postsparkline.pm

   1 #!/usr/bin/perl
   2 package IkiWiki::Plugin::postsparkline;
   3
   4 use warnings;
   5 use strict;
   6 use IkiWiki 2.00;
   7
   8 sub import { #{{{
   9         IkiWiki::loadplugin('sparkline');
  10         hook(type => "preprocess", id => "postsparkline", call => \&preprocess);
  11 } # }}}
  12
  13 sub preprocess (@) { #{{{
  14         my %params=@_;
  15
  16         if (! exists $params{max}) {
  17                 $params{max}=100;
  18         }
  19
  20         if (! exists $params{pages}) {
  21                 return "";
  22         }
  23
  24         if (! exists $params{time} || $params{time} ne 'mtime') {
  25                 $params{timehash} = \%IkiWiki::pagectime;
  26         }
  27         else {
  28                 $params{timehash} = \%IkiWiki::pagemtime;
  29         }
  30
  31         if (! exists $params{formula}) {
  32                 return "[[postsparkline ".gettext("missing formula")."]]";
  33         }
  34         my $formula=$params{formula};
  35         $formula=~s/[^a-zA-Z0-9]*//g;
  36         $formula=IkiWiki::possibly_foolish_untaint($formula);
  37         if (! length $formula ||
  38             ! IkiWiki::Plugin::postsparkline::formula->can($formula)) {
  39                 return "[[postsparkline ".gettext("unknown formula")."]]";
  40         }
  41
  42         add_depends($params{page}, $params{pages});
  43
  44         my @list;
  45         foreach my $page (keys %pagesources) {
  46                 next if $page eq $params{page};
  47                 if (pagespec_match($page, $params{pages}, location => $params{page})) {
  48                         push @list, $page;
  49                 }
  50         }
  51
  52         @list = sort { $params{timehash}->{$b} <=> $params{timehash}->{$a} } @list;
  53
  54         my @data=eval qq{IkiWiki::Plugin::postsparkline::formula::$formula(\\\%params, \@list)};
  55         if ($@) {
  56                 return "[[postsparkline error $@]]";
  57         }
  58         delete $params{pages};
  59         delete $params{formula};
  60         delete $params{ftime};
  61         return IkiWiki::Plugin::sparkline::preprocess(%params,
  62                 map { $_ => "" } reverse @data);
  63 } # }}}
  64
  65 sub perfoo ($@) {
  66         my $sub=shift;
  67         my $params=shift;
  68
  69         my $max=$params->{max};
  70         my ($first, $prev, $cur);
  71         my $count=0;
  72         my @data;
  73         foreach (@_) {
  74                 $cur=$sub->($params->{timehash}->{$_});
  75                 if (defined $prev) {
  76                         if ($prev != $cur) {
  77                                 push @data, "$prev,$count";
  78                                 $count=0;
  79                                 last if --$max <= 0;
  80
  81                                 for ($cur+1 .. $prev-1) {
  82                                         push @data, "$_,0";
  83                                         last if --$max == 0;
  84                                 }
  85                         }
  86                 }
  87                 else {
  88                         $first=$cur;
  89                 }
  90                 $count++;
  91                 $prev=$cur;
  92         }
  93
  94         return @data;
  95 }
  96
  97 package IkiWiki::Plugin::postsparkline::formula;
  98
  99 sub peryear (@) {
 100         return IkiWiki::Plugin::postsparkline::perfoo(sub {
 101                 return (localtime $_[0])[5];
 102         }, @_);
 103 }
 104
 105 sub permonth (@) {
 106         return IkiWiki::Plugin::postsparkline::perfoo(sub {
 107                 my ($month, $year)=(localtime $_[0])[4,5];
 108                 return $year*12+$month;
 109         }, @_);
 110 }
 111
 112 sub perday (@) {
 113         return IkiWiki::Plugin::postsparkline::perfoo(sub {
 114                 my ($year, $yday)=(localtime $_[0])[5,7];
 115                 return $year*365+$yday;
 116         }, @_);
 117 }
 118
 119 sub interval ($@) {
 120         my $params=shift;
 121
 122         my $max=$params->{max};
 123         my @data;
 124         for (my $i=1; $i < @_; $i++) {
 125                 push @data, $params->{timehash}->{$_[$i-1]} - $params->{timehash}->{$_[$i]};
 126                 last if --$max <= 0;
 127         }
 128         return @data;
 129 }
 130
 131 1