}
if (! exists $params{formula}) {
- return "[[postsparkline ".gettext("missing formula")."]]";
+ error gettext("missing formula")
}
my $formula=$params{formula};
$formula=~s/[^a-zA-Z0-9]*//g;
$formula=IkiWiki::possibly_foolish_untaint($formula);
if (! length $formula ||
! IkiWiki::Plugin::postsparkline::formula->can($formula)) {
- return "[[postsparkline ".gettext("unknown formula")."]]";
+ error gettext("unknown formula");
}
add_depends($params{page}, $params{pages});
my @data=eval qq{IkiWiki::Plugin::postsparkline::formula::$formula(\\\%params, \@list)};
if ($@) {
- return "[[postsparkline error $@]]";
+ error $@;
}
+
+ if (! @data) {
+ # generate an empty graph
+ push @data, 0 foreach 1..($params{max} / 2);
+ }
+
+ my $color=exists $params{color} ? "($params{color})" : "";
+
delete $params{pages};
delete $params{formula};
delete $params{ftime};
+ delete $params{color};
return IkiWiki::Plugin::sparkline::preprocess(%params,
- map { $_ => "" } reverse @data);
+ map { $_.$color => "" } reverse @data);
} # }}}
sub perfoo ($@) {