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{-# LANGUAGE OverloadedStrings, FlexibleContexts #-}
module Graphviz (graphviz) where
import Types
import Hash
import CmdLine
import Log
import Data.Char hiding (Control)
import Data.Monoid
import Data.GraphViz
import Data.GraphViz.Attributes.Complete
import Data.GraphViz.Types.Generalised as G
import Data.GraphViz.Types.Monadic
import Control.Monad
import qualified Data.ByteString as B
import qualified Data.ByteString.Lazy as L
import qualified Data.Text.Lazy as T
import qualified Data.Text.Lazy.Encoding as T
import Data.Text.Encoding.Error
graphviz :: GraphvizOpts -> IO ()
graphviz opts = do
l <- loadLog (graphvizLogFile opts)
let g = genGraph opts l
f <- createImage (graphvizLogFile opts) Png g
putStrLn ("Generated " ++ f)
createImage :: PrintDotRepr dg n => FilePath -> GraphvizOutput -> dg n -> IO FilePath
createImage f o g = Data.GraphViz.addExtension (runGraphvizCommand Dot g) o f
genGraph :: GraphvizOpts -> [Log] -> G.DotGraph T.Text
genGraph opts ls = digraph (Str "debug-me") $ do
nodeAttrs [style filled]
forM_ ls $
showlog [ xcolor Green ]
where
showlog s l = case (loggedMessage l, loggedHash l) of
(User (ActivityMessage a), Just h) -> do
node (display h) $ s ++
[ textLabel $ prettyDisplay $ activity a
, shape BoxShape
]
linkprev s a h
(Developer (ActivityMessage a), Just h) -> do
node (display h) $ s ++
[ textLabel $ prettyDisplay $ activity a
, shape Circle
]
linkprev s a h
(User (ControlMessage c), Nothing) -> showcontrol c l
(Developer (ControlMessage c), Nothing) -> showcontrol c l
_ -> return ()
showcontrol (Control (Rejected ar) _) l = do
let hr = hash ar
let rejstyle =
[ xcolor Red
, Style [dashed, filled]
]
let nodename = display $ "Rejected " <> display hr
node nodename $ rejstyle ++
[ textLabel "Rejected"
, shape BoxShape
]
showlog rejstyle $ Log
{ loggedMessage = Developer (ActivityMessage ar)
, loggedHash = Just hr
, loggedTimestamp = loggedTimestamp l
}
edge nodename (display hr) rejstyle
showcontrol _ _ = return ()
linkprev s a h = case prevActivity a of
Nothing -> return ()
Just p -> link p h s
link a b s = edge (display a) (display b) $ s ++
if graphvizShowHashes opts
then [ textLabel (prettyDisplay a) ]
else []
xcolor :: X11Color -> Attribute
xcolor c = Color [toWC $ X11Color c]
class Display t where
-- Display more or less as-is, for graphviz.
display :: t -> T.Text
-- Prettified display for user-visible labels etc.
prettyDisplay :: t -> T.Text
prettyDisplay = prettyDisplay . display
instance Display T.Text where
display = id
prettyDisplay t
| all visible s = t
| all isPrint s && not (leadingws s) && not (leadingws (reverse s)) = t
| otherwise = T.pack (show s)
where
s = T.unpack t
visible c = isPrint c && not (isSpace c)
leadingws (c:_) = isSpace c
leadingws _ = False
instance Display Val where
display (Val b) = T.decodeUtf8With lenientDecode (L.fromStrict b)
instance Display Hash where
display (Hash m h) = T.pack (show m) <> display h
-- Use short hash for pretty display.
-- The "h:" prefix is to work around this bug:
-- https://github.com/ivan-m/graphviz/issues/16
prettyDisplay h = display $ Val $ "h:" <> (B.take 5 $ val $ hashValue h)
instance Display Seen where
display = display . seenData
instance Display Entered where
display v
| B.null (val $ echoData v) = display $ enteredData v
| otherwise = "[" <> display (echoData v) <> "] " <> display (enteredData v)
instance Display Control where
display = display . control
instance Display ControlAction where
display = T.pack . show
|
