1 The graphviz.pm plug-in currently attempts to read PNG data in UTF-8 mode, which sometimes fail with a message similar to the following (depending on the input):
3 utf8 "\x89" does not map to Unicode at /usr/local/lib/perl5/site_perl/5.8.8/IkiWiki/Plugin/graphviz.pm line 53, <IN> chunk 1.
4 Wide character in subroutine entry at /usr/local/lib/perl5/site_perl/5.8.8/IkiWiki/Plugin/graphviz.pm line 68.
6 > Ok, will remove the binmode IN then. done --[[Joey]]
8 >> Thanks --[[HenrikBrixAndersen]]
10 It also generates image URLs relative to the page being rendered, which means the URLs wont work when previewing a graph from the CGI script.
12 (preview bug split to [[Problems_with_graphviz.pm_plug-in_previews]])
14 >> Here is an updated patch againt ikiwiki-2.5:
16 >>> [[Applied|done]], thanks. --[[Joey]]
18 The patch below fixes these two issues.
20 --- graphviz.pm.orig Thu Jun 7 15:45:16 2007
21 +++ graphviz.pm Fri Jun 8 12:03:38 2007
22 @@ -41,7 +41,6 @@ sub render_graph (\%) {
23 $pid=open2(*IN, *OUT, "$params{prog} -Tpng");
25 # open2 doesn't respect "use open ':utf8'"
26 - binmode (IN, ':utf8');
27 binmode (OUT, ':utf8');
30 @@ -70,7 +69,12 @@ sub render_graph (\%) {
34 - return "<img src=\"".urlto($dest, $params{page})."\" />\n";
35 + if ($params{preview}) {
36 + return "<img src=\"".urlto($dest, "")."\" />\n";
39 + return "<img src=\"".urlto($dest, $params{page})."\" />\n";