lua playlist: extend pluzz.lua to handle france4.

Some pluzz streams are only available on shows pages.
(cherry picked from commit 951ced78)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

share/lua/playlist/pluzz.lua

@@ -25,6 +25,7 @@ function probe()
     return vlc.access == "http"
         and string.match( vlc.path, "pluzz.fr/%w+" )
         or string.match( vlc.path, "info.francetelevisions.fr/.+")
+        or string.match( vlc.path, "france4.fr/%w+")
 end
 
 -- Helpers
@@ -53,6 +54,19 @@ function parse()
         end
     end
 
+    if string.match ( vlc.path, "www.france4.fr/%w+" ) then
+        while true do
+            line = vlc.readline()
+            if not line then break end
+	    -- maybe we should get id from tags having video/cappuccino type instead
+            if string.match( line, "id=\"lavideo\"" ) then
+                _,_,redirect = string.find (line, "href=\"(.-)\"" )
+                print ("redirecting to: " .. redirect )
+                return { { path = redirect } }
+            end
+        end
+    end
+
     if string.match ( vlc.path, "info.francetelevisions.fr/.+" ) then
         title = ""
         arturl = "http://info.francetelevisions.fr/video-info/player_sl/Images/PNG/gene_ftv.png"