content: module Settings.Builders.Haddock (haddockBuilderArgs) where
  
  import Hadrian.Haskell.Cabal
  import Hadrian.Haskell.Cabal.Type
  import Hadrian.Utilities
  
  import Packages
  import Rules.Documentation
  import Settings.Builders.Common
  import Settings.Builders.Ghc
  
  -- | Given a version string such as "2.16.2" produce an integer equivalent.
  versionToInt :: String -> Int
  versionToInt = read . dropWhile (=='0') . filter (/='.')
  
  haddockBuilderArgs :: Args
  haddockBuilderArgs = mconcat
      [ builder (Haddock BuildIndex) ? do
          output <- getOutput
          inputs <- getInputs
          root   <- getBuildRoot
          mconcat
              [ arg $ "-B" ++ root -/- "stage1" -/- "lib"
              , arg $ "--lib=" ++ root -/- "docs"
              , arg "--gen-index"
              , arg "--gen-contents"
              , arg "-o", arg $ takeDirectory output
              , arg "-t", arg "Haskell Hierarchical Libraries"
              , arg "-p", arg "libraries/prologue.txt"
              , pure [ "--read-interface="
                       ++ (takeFileName . takeDirectory) haddock
                       ++ "," ++ haddock | haddock <- inputs ] ]
  
      , builder (Haddock BuildPackage) ? do
          output   <- getOutput
          pkg      <- getPackage
          root     <- getBuildRoot
          path     <- getBuildPath
          context  <- getContext
          version  <- expr $ pkgVersion  pkg
          synopsis <- expr $ pkgSynopsis pkg
          deps     <- getContextData depNames
          haddocks <- expr $ haddockDependencies context
          hVersion <- expr $ pkgVersion haddock
          ghcOpts  <- haddockGhcArgs
          mconcat
              [ arg "--verbosity=0"
              , arg $ "-B" ++ root -/- "stage1" -/- "lib"
              , arg $ "--lib=" ++ root -/- "docs"
              , arg $ "--odir=" ++ takeDirectory output
              , arg "--no-tmp-comp-dir"
              , arg $ "--dump-interface=" ++ output
              , arg "--html"
              , arg "--hyperlinked-source"
              , arg "--hoogle"
              , arg "--quickjump"
              , arg $ "--title=" ++ pkgName pkg ++ "-" ++ version
                      ++ ": " ++ synopsis
              , arg $ "--prologue=" ++ takeDirectory output -/- "haddock-prologue.txt"
              , arg $ "--optghc=-D__HADDOCK_VERSION__="
                      ++ show (versionToInt hVersion)
              , map ("--hide=" ++) <$> getContextData otherModules
              , pure [ "--read-interface=../" ++ dep
                       ++ ",../" ++ dep ++ "/src/%{MODULE}.html#%{NAME},"
                       ++ haddock | (dep, haddock) <- zip deps haddocks ]
              , pure [ "--optghc=" ++ opt | opt <- ghcOpts, not ("--package-db" `isInfixOf` opt) ]
              , getInputs
              , arg "+RTS"
              , arg $ "-t" ++ path -/- "haddock.t"
              , arg "--machine-readable"
              , arg "-RTS" ] ]
  