ni_nitdoc: Introduced function to generate dot file

Adding a function in HTMLPage to generate dot file

Signed-off-by: Stefan Lage <lagestfan@gmail.com>

diff --git a/src/ni_nitdoc.nit b/src/ni_nitdoc.nit
index 523985c..e1da32b 100644 (file)
--- a/src/ni_nitdoc.nit
+++ b/src/ni_nitdoc.nit
@@ -225,6 +225,22 @@ class NitdocPage
 
        redef fun body do header
        fun header do end
+
+       # Generate a clickable graphviz image using a dot content
+       fun generate_dot(dot: String, name: String, alt: String) do
+               if opt_nodot then return
+               var file = new OFStream.open("{self.destinationdir}/{name}.dot")
+               file.write(dot)
+               file.close
+               sys.system("\{ test -f {self.destinationdir}/{name}.png && test -f {self.destinationdir}/{name}.s.dot && diff {self.destinationdir}/{name}.dot {self.destinationdir}/{name}.s.dot >/dev/null 2>&1 ; \} || \{ cp {self.destinationdir}/{name}.dot {self.destinationdir}/{name}.s.dot && dot -Tpng -o{self.destinationdir}/{name}.png -Tcmapx -o{self.destinationdir}/{name}.map {self.destinationdir}/{name}.s.dot ; \}")
+               open("article").add_class("graph")
+               add("img").attr("src", "{name}.png").attr("usemap", "#{name}").attr("style", "margin:auto").attr("alt", "{alt}")
+               close("article")
+               var fmap = new IFStream.open("{self.destinationdir}/{name}.map")
+               add_html(fmap.read_all)
+               fmap.close
+       end
+
 end
 
 redef class AModule