1 files changed, 81 insertions, 0 deletions
diff --git a/src/Haddock/Backends/DevHelp.hs b/src/Haddock/Backends/DevHelp.hs
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+++ b/src/Haddock/Backends/DevHelp.hs
@@ -0,0 +1,81 @@
+--
+-- Haddock - A Haskell Documentation Tool
+--
+-- (c) Simon Marlow 2003
+--
+
+module Haddock.Backends.DevHelp (ppDevHelpFile) where
+
+import Haddock.ModuleTree
+import Haddock.Types
+import Haddock.Utils
+
+import Module        ( moduleName, moduleNameString, Module, mkModule, mkModuleName )
+import PackageConfig ( stringToPackageId )
+import Name          ( Name, nameModule, getOccString )
+
+import Data.Maybe    ( fromMaybe )
+import qualified Data.Map as Map
+import Text.PrettyPrint
+
+ppDevHelpFile :: FilePath -> String -> Maybe String -> [HaddockModule] -> IO ()
+ppDevHelpFile odir doctitle maybe_package modules = do
+  let devHelpFile = package++".devhelp"
+      tree = mkModuleTree True [ (hmod_mod mod, toDescription mod) | mod <- modules ]
+      doc =
+        text "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>" $$
+        (text "<book xmlns=\"http://www.devhelp.net/book\" title=\""<>text doctitle<>
+            text "\" link=\""<>text contentsHtmlFile<>text"\" author=\"\" name=\""<>text package<>text "\">") $$
+        text "<chapters>" $$
+        nest 4 (ppModuleTree [] tree) $+$
+        text "</chapters>" $$
+        text "<functions>" $$
+        nest 4 (ppList index) $+$
+        text "</functions>" $$
+        text "</book>"
+  writeFile (pathJoin [odir, devHelpFile]) (render doc)
+  where    
+    package = fromMaybe "pkg" maybe_package
+
+    ppModuleTree :: [String] -> [ModuleTree] -> Doc
+    ppModuleTree ss [x]    = ppNode ss x
+    ppModuleTree ss (x:xs) = ppNode ss x $$ ppModuleTree ss xs
+    ppModuleTree _  []     = error "HaddockHH.ppHHContents.fn: no module trees given"
+
+    ppNode :: [String] -> ModuleTree -> Doc
+    ppNode ss (Node s leaf _ _short ts) =
+        case ts of
+          [] -> text "<sub"<+>ppAttribs<>text "/>"
+          ts -> 
+            text "<sub"<+>ppAttribs<>text ">" $$
+            nest 4 (ppModuleTree (s:ss) ts) $+$
+            text "</sub>"
+        where
+          ppLink | leaf      = text (moduleHtmlFile (mkModule (stringToPackageId "") 
+                                                              (mkModuleName mdl)))
+                 | otherwise = empty
+
+          ppAttribs = text "name="<>doubleQuotes (text s)<+>text "link="<>doubleQuotes ppLink
+
+          mdl = foldr (++) "" (s' : map ('.':) ss')
+          (s':ss') = reverse (s:ss)
+		-- reconstruct the module name
+
+    index :: [(Name, [Module])]
+    index = Map.toAscList (foldr getModuleIndex Map.empty modules)
+
+    getModuleIndex hmod fm =
+	Map.unionWith (++) (Map.fromListWith (flip (++)) [(name, [mod]) | name <- hmod_exports hmod, nameModule name == mod]) fm
+	where mod = hmod_mod hmod
+
+    ppList :: [(Name, [Module])] -> Doc
+    ppList [] = empty
+    ppList ((name,refs):mdls)  =
+      ppReference name refs $$
+      ppList mdls
+
+    ppReference :: Name -> [Module] -> Doc
+    ppReference name [] = empty
+    ppReference name (mod:refs) =  
+      text "<function name=\""<>text (escapeStr (getOccString name))<>text"\" link=\""<>text (nameHtmlRef mod name)<>text"\"/>" $$
+      ppReference name refs