saner return codes for check_can{remove,rename}

[git.ikiwiki.info.git] / IkiWiki / Plugin / graphviz.pm

diff --git a/IkiWiki/Plugin/graphviz.pm b/IkiWiki/Plugin/graphviz.pm
index 48f520c4f92f9fc7279852d017310d20ed061a25..4ed8b89f165847832762408c05b0abedc21aaf6c 100644 (file)
--- a/IkiWiki/Plugin/graphviz.pm
+++ b/IkiWiki/Plugin/graphviz.pm
@@ -5,18 +5,28 @@ package IkiWiki::Plugin::graphviz;
 
 use warnings;
 use strict;
-use IkiWiki;
+use IkiWiki 3.00;
 use IPC::Open2;
 
-sub import { #{{{
+sub import {
+       hook(type => "getsetup", id => "graphviz", call => \&getsetup);
        hook(type => "preprocess", id => "graph", call => \&graph);
-} # }}}
+}
+
+sub getsetup () {
+       return
+               plugin => {
+                       safe => 1,
+                       rebuild => undef,
+                       section => "widget",
+               },
+}
 
 my %graphviz_programs = (
        "dot" => 1, "neato" => 1, "fdp" => 1, "twopi" => 1, "circo" => 1
 );
 
-sub render_graph (\%) { #{{{
+sub render_graph (\%) {
        my %params = %{(shift)};
 
        my $src = "$params{type} g {\n";
@@ -27,21 +37,20 @@ sub render_graph (\%) { #{{{
        $src .= "}\n";
 
        # Use the sha1 of the graphviz code as part of its filename.
-       eval q{use Digest::SHA1};
+       eval q{use Digest::SHA};
        error($@) if $@;
        my $dest=$params{page}."/graph-".
-               IkiWiki::possibly_foolish_untaint(Digest::SHA1::sha1_hex($src)).
+               IkiWiki::possibly_foolish_untaint(Digest::SHA::sha1_hex($src)).
                ".png";
        will_render($params{page}, $dest);
 
        if (! -e "$config{destdir}/$dest") {
                my $pid;
-               my $sigpipe=0;;
+               my $sigpipe=0;
                $SIG{PIPE}=sub { $sigpipe=1 };
                $pid=open2(*IN, *OUT, "$params{prog} -Tpng");
 
                # open2 doesn't respect "use open ':utf8'"
-               binmode (IN, ':utf8');
                binmode (OUT, ':utf8');
 
                print OUT $src;
@@ -56,13 +65,14 @@ sub render_graph (\%) { #{{{
 
                waitpid $pid, 0;
                $SIG{PIPE}="DEFAULT";
-               return  "[[graph ".gettext("failed to run graphviz")."]]" if ($sigpipe);
+               error gettext("failed to run graphviz") if $sigpipe;
 
                if (! $params{preview}) {
                        writefile($dest, $config{destdir}, $png, 1);
                }
                else {
-                       # can't write the file, so embed it in a data uri
+                       # in preview mode, embed the image in a data uri
+                       # to avoid temp file clutter
                        eval q{use MIME::Base64};
                        error($@) if $@;
                        return "<img src=\"data:image/png;base64,".
@@ -70,17 +80,17 @@ sub render_graph (\%) { #{{{
                }
        }
 
-       return "<img src=\"".urlto($dest, $params{page})."\" />\n";
-} #}}}
+       return "<img src=\"".urlto($dest, $params{destpage})."\" />\n";
+}
 
-sub graph (@) { #{{{
+sub graph (@) {
        my %params=@_;
        $params{src} = "" unless defined $params{src};
        $params{type} = "digraph" unless defined $params{type};
        $params{prog} = "dot" unless defined $params{prog};
-       return "[[graph ".gettext("prog not a valid graphviz program")."]]" unless $graphviz_programs{$params{prog}};
+       error gettext("prog not a valid graphviz program") unless $graphviz_programs{$params{prog}};
 
        return render_graph(%params);
-} # }}}
+}
 
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