HpcMarkup.hs 19 KB
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---------------------------------------------------------
-- The main program for the hpc-markup tool, part of HPC.
-- Andy Gill and Colin Runciman, June 2006
---------------------------------------------------------

module HpcMarkup (markup_plugin) where

import Trace.Hpc.Mix
import Trace.Hpc.Tix
import Trace.Hpc.Util

import HpcFlags
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import HpcUtils
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import System.Directory
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import System.FilePath
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import System.IO (localeEncoding)
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import Data.List
import Data.Maybe(fromJust)
import Data.Array
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import Control.Monad
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import qualified Data.Set as Set
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------------------------------------------------------------------------------

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markup_options :: FlagOptSeq
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markup_options
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        = excludeOpt
        . includeOpt
        . srcDirOpt
        . hpcDirOpt
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        . resetHpcDirsOpt
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        . funTotalsOpt
        . altHighlightOpt
        . destDirOpt
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        . verbosityOpt
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markup_plugin :: Plugin
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markup_plugin = Plugin { name = "markup"
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                       , usage = "[OPTION] .. <TIX_FILE> [<MODULE> [<MODULE> ..]]"
                       , options = markup_options
                       , summary = "Markup Haskell source with program coverage"
                       , implementation = markup_main
                       , init_flags = default_flags
                       , final_flags = default_final_flags
                       }
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------------------------------------------------------------------------------

markup_main :: Flags -> [String] -> IO ()
markup_main flags (prog:modNames) = do
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  let hpcflags1 = flags
                { includeMods = Set.fromList modNames
                                   `Set.union`
                                includeMods flags }
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  let Flags
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       { funTotals = theFunTotals
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       , altHighlight = invertOutput
       , destDir = dest_dir
       }  = hpcflags1

  mtix <- readTix (getTixFileName prog)
  Tix tixs <- case mtix of
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    Nothing -> hpcError markup_plugin $ "unable to find tix file for: " ++ prog
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    Just a -> return a

  mods <-
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     sequence [ genHtmlFromMod dest_dir hpcflags1 tix theFunTotals invertOutput
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              | tix <- tixs
              , allowModule hpcflags1 (tixModuleName tix)
              ]
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  let index_name = "hpc_index"
      index_fun  = "hpc_index_fun"
      index_alt  = "hpc_index_alt"
      index_exp  = "hpc_index_exp"

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  let writeSummary filename cmp = do
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        let mods' = sortBy cmp mods
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        unless (verbosity flags < Normal) $
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            putStrLn $ "Writing: " ++ (filename <.> "html")
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        writeFileUsing (dest_dir </> filename <.> "html") $
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            "<html>" ++
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            "<head>" ++
            charEncodingTag ++
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            "<style type=\"text/css\">" ++
            "table.bar { background-color: #f25913; }\n" ++
            "td.bar { background-color: #60de51;  }\n" ++
            "td.invbar { background-color: #f25913;  }\n" ++
            "table.dashboard { border-collapse: collapse  ; border: solid 1px black }\n" ++
            ".dashboard td { border: solid 1px black }\n" ++
            ".dashboard th { border: solid 1px black }\n" ++
            "</style>\n" ++
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            "</head>" ++
            "<body>" ++
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            "<table class=\"dashboard\" width=\"100%\" border=1>\n" ++
            "<tr>" ++
            "<th rowspan=2><a href=\"" ++ index_name ++ ".html\">module</a></th>" ++
            "<th colspan=3><a href=\"" ++ index_fun ++ ".html\">Top Level Definitions</a></th>" ++
            "<th colspan=3><a href=\"" ++ index_alt ++ ".html\">Alternatives</a></th>" ++
            "<th colspan=3><a href=\"" ++ index_exp ++ ".html\">Expressions</a></th>" ++
            "</tr>" ++
            "<tr>" ++
            "<th>%</th>" ++
            "<th colspan=2>covered / total</th>" ++
            "<th>%</th>" ++
            "<th colspan=2>covered / total</th>" ++
            "<th>%</th>" ++
            "<th colspan=2>covered / total</th>" ++
            "</tr>" ++
            concat [ showModuleSummary (modName,fileName,modSummary)
                   | (modName,fileName,modSummary) <- mods'
                   ] ++
            "<tr></tr>" ++
            showTotalSummary (mconcat
                                 [ modSummary
                                 | (_,_,modSummary) <- mods'
                                 ])
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                   ++ "</table></body></html>\n"
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  writeSummary index_name  $ \ (n1,_,_) (n2,_,_) -> compare n1 n2
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  writeSummary index_fun $ \ (_,_,s1) (_,_,s2) ->
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        compare (percent (topFunTicked s2) (topFunTotal s2))
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                (percent (topFunTicked s1) (topFunTotal s1))
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  writeSummary index_alt $ \ (_,_,s1) (_,_,s2) ->
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        compare (percent (altTicked s2) (altTotal s2))
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                (percent (altTicked s1) (altTotal s1))
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  writeSummary index_exp $ \ (_,_,s1) (_,_,s2) ->
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        compare (percent (expTicked s2) (expTotal s2))
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                (percent (expTicked s1) (expTotal s1))
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markup_main _ []
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    = hpcError markup_plugin $ "no .tix file or executable name specified"
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charEncodingTag :: String
charEncodingTag =
    "<meta http-equiv=\"Content-Type\" " ++
          "content=\"text/html; " ++ "charset=" ++ show localeEncoding ++ "\">"

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-- Add characters to the left of a string until it is at least as
-- large as requested.
padLeft :: Int -> Char -> String -> String
padLeft n c str = go n str
  where
    -- If the string is already long enough, stop traversing it.
    go 0 _       = str
    go k []      = replicate k c ++ str
    go k (_:xs)  = go (k-1) xs

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genHtmlFromMod
  :: String
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  -> Flags
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  -> TixModule
  -> Bool
  -> Bool
  -> IO (String, [Char], ModuleSummary)
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genHtmlFromMod dest_dir flags tix theFunTotals invertOutput = do
  let theHsPath = srcDirs flags
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  let modName0 = tixModuleName tix
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  (Mix origFile _ _ tabStop mix') <- readMixWithFlags flags (Right tix)
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  let arr_tix :: Array Int Integer
      arr_tix = listArray (0,length (tixModuleTixs tix) - 1)
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              $ tixModuleTixs tix
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  let tickedWith :: Int -> Integer
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      tickedWith n = arr_tix ! n
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      isTicked n = tickedWith n /= 0

  let info = [ (pos,theMarkup)
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             | (gid,(pos,boxLabel)) <- zip [0 ..] mix'
             , let binBox = case (isTicked gid,isTicked (gid+1)) of
                               (False,False) -> []
                               (True,False)  -> [TickedOnlyTrue]
                               (False,True)  -> [TickedOnlyFalse]
                               (True,True)   -> []
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             , let tickBox = if isTicked gid
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                             then [IsTicked]
                             else [NotTicked]
             , theMarkup <- case boxLabel of
                                  ExpBox {} -> tickBox
                                  TopLevelBox {}
                                            -> TopLevelDecl theFunTotals (tickedWith gid) : tickBox
                                  LocalBox {}   -> tickBox
                                  BinBox _ True -> binBox
                                  _             -> []
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             ]


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  let modSummary = foldr (.) id
             [ \ st ->
               case boxLabel of
                 ExpBox False
                        -> st { expTicked = ticked (expTicked st)
                              , expTotal = succ (expTotal st)
                              }
                 ExpBox True
                        -> st { expTicked = ticked (expTicked st)
                              , expTotal = succ (expTotal st)
                              , altTicked = ticked (altTicked st)
                              , altTotal = succ (altTotal st)
                              }
                 TopLevelBox _ ->
                           st { topFunTicked = ticked (topFunTicked st)
                              , topFunTotal = succ (topFunTotal st)
                              }
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                 _ -> st
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             | (gid,(_pos,boxLabel)) <- zip [0 ..] mix'
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             , let ticked = if isTicked gid
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                            then succ
                            else id
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             ] $ mempty
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  -- add prefix to modName argument
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  content <- readFileFromPath (hpcError markup_plugin) origFile theHsPath
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  let content' = markup tabStop info content
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  let addLine n xs = "<span class=\"lineno\">" ++ padLeft 5 ' ' (show n) ++ " </span>" ++ xs
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  let addLines = unlines . map (uncurry addLine) . zip [1 :: Int ..] . lines
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  let fileName = modName0 <.> "hs" <.> "html"
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  unless (verbosity flags < Normal) $
            putStrLn $ "Writing: " ++ fileName
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  writeFileUsing (dest_dir </> fileName) $
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            unlines ["<html>",
                     "<head>",
                     charEncodingTag,
                     "<style type=\"text/css\">",
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                     "span.lineno { color: white; background: #aaaaaa; border-right: solid white 12px }",
                     if invertOutput
                     then "span.nottickedoff { color: #404040; background: white; font-style: oblique }"
                     else "span.nottickedoff { background: " ++ yellow ++ "}",
                     if invertOutput
                     then "span.istickedoff { color: black; background: #d0c0ff; font-style: normal; }"
                     else "span.istickedoff { background: white }",
                     "span.tickonlyfalse { margin: -1px; border: 1px solid " ++ red ++ "; background: " ++ red ++ " }",
                     "span.tickonlytrue  { margin: -1px; border: 1px solid " ++ green ++ "; background: " ++ green ++ " }",
                     "span.funcount { font-size: small; color: orange; z-index: 2; position: absolute; right: 20 }",
                     if invertOutput
                     then "span.decl { font-weight: bold; background: #d0c0ff }"
                     else "span.decl { font-weight: bold }",
                     "span.spaces    { background: white }",
                     "</style>",
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                     "</head>",
                     "<body>",
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                     "<pre>",
                     concat [
                         "<span class=\"decl\">",
                         "<span class=\"nottickedoff\">never executed</span> ",
                         "<span class=\"tickonlytrue\">always true</span> ",
                         "<span class=\"tickonlyfalse\">always false</span></span>"],
                     "</pre>",
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                     "<pre>"] ++ addLines content' ++ "\n</pre>\n</body>\n</html>\n";

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  modSummary `seq` return (modName0,fileName,modSummary)
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data Loc = Loc !Int !Int
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         deriving (Eq,Ord,Show)
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data Markup
     = NotTicked
     | TickedOnlyTrue
     | TickedOnlyFalse
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     | IsTicked
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     | TopLevelDecl
           Bool     -- display entry totals
           Integer
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     deriving (Eq,Show)

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markup    :: Int                -- ^tabStop
          -> [(HpcPos,Markup)]  -- random list of tick location pairs
          -> String             -- text to mark up
          -> String
markup tabStop mix str = addMarkup tabStop str (Loc 1 1) [] sortedTickLocs
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  where
    tickLocs = [ (Loc ln1 c1,Loc ln2 c2,mark)
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               | (pos,mark) <- mix
               , let (ln1,c1,ln2,c2) = fromHpcPos pos
               ]
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    sortedTickLocs = sortBy (\(locA1,locZ1,_) (locA2,locZ2,_) ->
                              (locA1,locZ2) `compare` (locA2,locZ1)) tickLocs

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addMarkup :: Int                -- tabStop
          -> String             -- text to mark up
          -> Loc                -- current location
          -> [(Loc,Markup)]     -- stack of open ticks, with closing location
          -> [(Loc,Loc,Markup)] -- sorted list of tick location pairs
          -> String
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-- check the pre-condition.
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--addMarkup tabStop cs loc os ticks
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--   | not (isSorted (map fst os)) = error $ "addMarkup: bad closing ordering: " ++ show os

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--addMarkup tabStop cs loc os@(_:_) ticks
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--   | trace (show (loc,os,take 10 ticks)) False = undefined

-- close all open ticks, if we have reached the end
addMarkup _ [] _loc os [] =
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  concatMap (const closeTick) os
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addMarkup tabStop cs loc ((o,_):os) ticks | loc > o =
  closeTick ++ addMarkup tabStop cs loc os ticks

--addMarkup tabStop cs loc os ((t1,t2,tik@(TopLevelDecl {})):ticks) | loc == t1 =
--   openTick tik ++ closeTick ++ addMarkup tabStop cs loc os ticks

addMarkup tabStop cs loc os ((t1,t2,tik0):ticks) | loc == t1 =
  case os of
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  ((_,tik'):_)
    | not (allowNesting tik0 tik')
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    -> addMarkup tabStop cs loc os ticks -- already marked or bool within marked bool
  _ -> openTick tik0 ++ addMarkup tabStop cs loc (addTo (t2,tik0) os) ticks
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 where
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  addTo (t,tik) []             = [(t,tik)]
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  addTo (t,tik) ((t',tik'):xs) | t <= t'   = (t,tik):(t',tik'):xs
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                               | otherwise = (t',tik):(t',tik'):xs
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addMarkup tabStop0 cs loc os ((t1,_t2,_tik):ticks) | loc > t1 =
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          -- throw away this tick, because it is from a previous place ??
          addMarkup tabStop0 cs loc os ticks
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addMarkup tabStop0 ('\n':cs) loc@(Loc ln col) os@((Loc ln2 col2,_):_) ticks
          | ln == ln2 && col < col2
          = addMarkup tabStop0 (' ':'\n':cs) loc os ticks
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addMarkup tabStop0 (c0:cs) loc@(Loc _ p) os ticks =
  if c0=='\n' && os/=[] then
    concatMap (const closeTick) (downToTopLevel os) ++
    c0 : "<span class=\"spaces\">" ++ expand 1 w ++ "</span>" ++
    concatMap (openTick.snd) (reverse (downToTopLevel os)) ++
    addMarkup tabStop0 cs' loc' os ticks
  else if c0=='\t' then
    expand p "\t" ++ addMarkup tabStop0 cs (incBy c0 loc) os ticks
  else
    escape c0 ++ addMarkup tabStop0 cs (incBy c0 loc) os ticks
  where
  (w,cs') = span (`elem` " \t") cs
  loc' = foldl (flip incBy) loc (c0:w)
  escape '>' = "&gt;"
  escape '<' = "&lt;"
  escape '"' = "&quot;"
  escape '&' = "&amp;"
  escape c  = [c]

  expand :: Int -> String -> String
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  expand _ ""       = ""
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  expand c ('\t':s) = replicate (c' - c) ' ' ++ expand c' s
    where
    c' = tabStopAfter 8 c
  expand c (' ':s)  = ' ' : expand (c+1) s
  expand _ _        = error "bad character in string for expansion"
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  incBy :: Char -> Loc -> Loc
  incBy '\n' (Loc ln _c) = Loc (succ ln) 1
  incBy '\t' (Loc ln c) = Loc ln (tabStopAfter tabStop0 c)
  incBy _    (Loc ln c) = Loc ln (succ c)
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  tabStopAfter :: Int -> Int -> Int
  tabStopAfter tabStop c = fromJust (find (>c) [1,(tabStop + 1)..])

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addMarkup tabStop cs loc os ticks = "ERROR: " ++ show (take 10 cs,tabStop,loc,take 10 os,take 10 ticks)

openTick :: Markup -> String
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openTick NotTicked       = "<span class=\"nottickedoff\">"
openTick IsTicked        = "<span class=\"istickedoff\">"
openTick TickedOnlyTrue  = "<span class=\"tickonlytrue\">"
openTick TickedOnlyFalse = "<span class=\"tickonlyfalse\">"
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openTick (TopLevelDecl False _) = openTopDecl
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openTick (TopLevelDecl True 0)
         = "<span class=\"funcount\">-- never entered</span>" ++
           openTopDecl
openTick (TopLevelDecl True 1)
         = "<span class=\"funcount\">-- entered once</span>" ++
           openTopDecl
openTick (TopLevelDecl True n0)
         = "<span class=\"funcount\">-- entered " ++ showBigNum n0 ++ " times</span>" ++ openTopDecl
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  where showBigNum n | n <= 9999 = show n
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                     | otherwise = case n `quotRem` 1000 of
                                     (q, r) -> showBigNum' q ++ "," ++ showWith r
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        showBigNum' n | n <= 999 = show n
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                      | otherwise = case n `quotRem` 1000 of
                                      (q, r) -> showBigNum' q ++ "," ++ showWith r
        showWith n = padLeft 3 '0' $ show n


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closeTick :: String
closeTick = "</span>"

openTopDecl :: String
openTopDecl = "<span class=\"decl\">"

downToTopLevel :: [(Loc,Markup)] -> [(Loc,Markup)]
downToTopLevel ((_,TopLevelDecl {}):_) = []
downToTopLevel (o : os)               = o : downToTopLevel os
downToTopLevel []                     = []


-- build in logic for nesting bin boxes

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allowNesting :: Markup  -- innermost
            -> Markup   -- outermost
            -> Bool
allowNesting n m               | n == m = False -- no need to double nest
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allowNesting IsTicked TickedOnlyFalse   = False
allowNesting IsTicked TickedOnlyTrue    = False
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allowNesting _ _                        = True
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------------------------------------------------------------------------------

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data ModuleSummary = ModuleSummary
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     { expTicked :: !Int
     , expTotal  :: !Int
     , topFunTicked :: !Int
     , topFunTotal  :: !Int
     , altTicked :: !Int
     , altTotal  :: !Int
     }
     deriving (Show)


showModuleSummary :: (String, String, ModuleSummary) -> String
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showModuleSummary (modName,fileName,modSummary) =
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  "<tr>\n" ++
  "<td>&nbsp;&nbsp;<tt>module <a href=\"" ++ fileName ++ "\">"
                              ++ modName ++ "</a></tt></td>\n" ++
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   showSummary (topFunTicked modSummary) (topFunTotal modSummary) ++
   showSummary (altTicked modSummary) (altTotal modSummary) ++
   showSummary (expTicked modSummary) (expTotal modSummary) ++
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  "</tr>\n"

showTotalSummary :: ModuleSummary -> String
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showTotalSummary modSummary =
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  "<tr style=\"background: #e0e0e0\">\n" ++
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  "<th align=left>&nbsp;&nbsp;Program Coverage Total</tt></th>\n" ++
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   showSummary (topFunTicked modSummary) (topFunTotal modSummary) ++
   showSummary (altTicked modSummary) (altTotal modSummary) ++
   showSummary (expTicked modSummary) (expTotal modSummary) ++
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  "</tr>\n"

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showSummary :: (Integral t, Show t) => t -> t -> String
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showSummary ticked total =
                "<td align=\"right\">" ++ showP (percent ticked total) ++ "</td>" ++
                "<td>" ++ show ticked ++ "/" ++ show total ++ "</td>" ++
                "<td width=100>" ++
                    (case percent ticked total of
                       Nothing -> "&nbsp;"
                       Just w -> bar w "bar"
                     )  ++ "</td>"
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     where
        showP Nothing = "-&nbsp;"
        showP (Just x) = show x ++ "%"
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        bar 0 _     = bar 100 "invbar"
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        bar w inner = "<table cellpadding=0 cellspacing=0 width=\"100\" class=\"bar\">" ++
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                         "<tr><td><table cellpadding=0 cellspacing=0 width=\"" ++ show w ++ "%\">" ++
                              "<tr><td height=12 class=" ++ show inner ++ "></td></tr>" ++
                              "</table></td></tr></table>"
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percent :: (Integral a) => a -> a -> Maybe a
percent ticked total = if total == 0 then Nothing else Just (ticked * 100 `div` total)


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instance Monoid ModuleSummary where
  mempty = ModuleSummary
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                  { expTicked = 0
                  , expTotal  = 0
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                  , topFunTicked = 0
                  , topFunTotal  = 0
                  , altTicked = 0
                  , altTotal  = 0
                  }
  mappend (ModuleSummary eTik1 eTot1 tTik1 tTot1 aTik1 aTot1)
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          (ModuleSummary eTik2 eTot2 tTik2 tTot2 aTik2 aTot2)
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     = ModuleSummary (eTik1 + eTik2) (eTot1 + eTot2) (tTik1 + tTik2) (tTot1 + tTot2) (aTik1 + aTik2) (aTot1 + aTot2)

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------------------------------------------------------------------------------

writeFileUsing :: String -> String -> IO ()
writeFileUsing filename text = do
-- We need to check for the dest_dir each time, because we use sub-dirs for
-- packages, and a single .tix file might contain information about
-- many package.

  -- create the dest_dir if needed
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  createDirectoryIfMissing True (takeDirectory filename)
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  writeFile filename text

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------------------------------------------------------------------------------
-- global color pallete

red,green,yellow :: String
red    = "#f20913"
green  = "#60de51"
yellow = "yellow"