anansi (empty) → 0.1

raw patch · 14 files changed

+1532/−0 lines, 14 filesdep +basedep +bytestringdep +containerssetup-changed

Dependencies added: base, bytestring, containers, directory, filepath, monads-tf, parsec, text, transformers

Files

Anansi.hs +43/−0
Anansi/Loom.hs +26/−0
Anansi/Loom/Debug.hs +28/−0
Anansi/Loom/HTML.hs +54/−0
Anansi/Loom/LaTeX.hs +57/−0
Anansi/Loom/NoWeb.hs +55/−0
Anansi/Parser.hs +214/−0
Anansi/Tangle.hs +98/−0
Anansi/Types.hs +38/−0
Anansi/Util.hs +36/−0
Main.hs +158/−0
Setup.hs +2/−0
anansi.cabal +49/−0
license.txt +674/−0

+ Anansi.hs view

@@ -0,0 +1,43 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +module Anansi+	( Block (..)+	, Content (..)+	, Position (..)+	+	, ParseError (..)+	, parseFile+	+	, Loom (..)+	, looms+	, loomDebug+	, loomHTML+	, loomLaTeX+	, loomNoWeb+	+	, tangle+	) where+import Anansi.Types+import Anansi.Loom+import Anansi.Loom.Debug+import Anansi.Loom.HTML+import Anansi.Loom.LaTeX+import Anansi.Loom.NoWeb+import Anansi.Parser+import Anansi.Tangle++looms :: [Loom]+looms = [loomDebug, loomHTML, loomLaTeX, loomNoWeb]

+ Anansi/Loom.hs view

@@ -0,0 +1,26 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +module Anansi.Loom+	( Loom (..)+	) where+import Control.Monad.Writer+import Data.Text.Lazy (Text)+import Anansi.Types++data Loom = Loom+	{ loomName :: Text+	, loomWeave :: [Block] -> Writer Text ()+	}

+ Anansi/Loom/Debug.hs view

@@ -0,0 +1,28 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +{-# LANGUAGE OverloadedStrings #-}+module Anansi.Loom.Debug (loomDebug) where+import Data.Text.Lazy (pack)+import Control.Monad (forM_)+import Control.Monad.Writer (tell)+import Anansi.Loom++loomDebug :: Loom+loomDebug = Loom "debug" $ \blocks -> do+	tell "\nweaving\n"+	tell "==========================\n"+	forM_ blocks $ \b -> do+		tell . pack $ show b ++ "\n"

+ Anansi/Loom/HTML.hs view

@@ -0,0 +1,54 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +{-# LANGUAGE OverloadedStrings #-}+module Anansi.Loom.HTML (loomHTML) where+import qualified Data.Text.Lazy as TL+import Control.Monad (forM_)+import Control.Monad.Writer (tell)+import Anansi.Types+import Anansi.Loom++loomHTML :: Loom+loomHTML = Loom "html" $ mapM_ putBlock where+	putBlock b = case b of+		BlockText text -> tell text+		BlockFile path content -> let+			label = TL.concat ["<b>&#xBB; ", escape path, "</b>"]+			in putContent label content+		BlockDefine name content -> let+			label = TL.concat ["<b>&#xAB;", escape name, "&#xBB;</b>"]+			in putContent label content+	+	putContent label cs = do+		tell "<pre>"+		tell label+		tell "\n"+		forM_ cs $ \c -> case c of+			ContentText _ text -> tell . escape $ TL.append text "\n"+			ContentMacro _ indent name -> tell $ formatMacro indent name+		tell "</pre>"++formatMacro :: TL.Text -> TL.Text -> TL.Text+formatMacro indent name = TL.concat [indent, "<i>&#xAB;", escape name, "&#xBB;</i>\n"]++escape :: TL.Text -> TL.Text+escape = TL.concatMap $ \c -> case c of+	'&' -> "&amp;"+	'<' -> "&lt;"+	'>' -> "&gt;"+	'"' -> "&quot;"+	'\'' -> "&apos;"+	_ -> TL.singleton c

+ Anansi/Loom/LaTeX.hs view

@@ -0,0 +1,57 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +{-# LANGUAGE OverloadedStrings #-}+module Anansi.Loom.LaTeX (loomLaTeX) where+import qualified Data.Text.Lazy as TL+import Control.Monad (forM_)+import Control.Monad.Writer (tell)+import Anansi.Types+import Anansi.Loom++loomLaTeX :: Loom+loomLaTeX = Loom "latex" $ mapM_ putBlock where+	putBlock b = case b of+		BlockText text -> tell text+		BlockFile path content -> do+			tell "\\begin{alltt}\n"+			tell "{\\bf\\(\\gg\\) "+			tell $ escape path+			tell "}\n"+			putContent content+			tell "\\end{alltt}\n"+			+		BlockDefine name content -> do+			tell "\\begin{alltt}\n"+			tell "{\\bf\\(\\ll\\)"+			tell $ escape name+			tell "\\(\\gg\\)}\n"+			putContent content+			tell "\\end{alltt}\n"+	+	putContent cs = forM_ cs $ \c -> case c of+		ContentText _ text -> tell . escape $ TL.append text "\n"+		ContentMacro _ indent name -> tell $ formatMacro indent name++formatMacro :: TL.Text -> TL.Text -> TL.Text+formatMacro indent name = TL.concat [escape indent, "|\\emph{", escape name, "}|\n"]++escape :: TL.Text -> TL.Text+escape = TL.concatMap $ \c -> case c of+	'\t' -> "        "+	'\\' -> "\\textbackslash{}"+	'{' -> "\\{"+	'}' -> "\\}"+	_ -> TL.singleton c

+ Anansi/Loom/NoWeb.hs view

@@ -0,0 +1,55 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +{-# LANGUAGE OverloadedStrings #-}+module Anansi.Loom.NoWeb (loomNoWeb) where+import qualified Data.Text.Lazy as TL+import Control.Monad (forM_)+import Control.Monad.Writer (tell)+import Anansi.Types+import Anansi.Loom++loomNoWeb :: Loom+loomNoWeb = Loom "latex-noweb" $ mapM_ putBlock where+	putBlock b = case b of+		BlockText text -> tell text+		BlockFile path content -> do+			tell "\\nwbegincode{0}\\moddef{"+			tell $ escape path+			tell "}\\endmoddef\\nwstartdeflinemarkup\\nwenddeflinemarkup\n"+			putContent content+			tell "\\nwendcode{}\n"+			+		BlockDefine name content -> do+			tell "\\nwbegincode{0}\\moddef{"+			tell $ escape name+			tell "}\\endmoddef\\nwstartdeflinemarkup\\nwenddeflinemarkup\n"+			putContent content+			tell "\\nwendcode{}\n"+	+	putContent cs = forM_ cs $ \c -> case c of+		ContentText _ text -> tell . escape $ TL.append text "\n"+		ContentMacro _ indent name -> tell $ formatMacro indent name++formatMacro :: TL.Text -> TL.Text -> TL.Text+formatMacro indent name = TL.concat [escape indent, "\\LA{}", escape name, "\\RA{}\n"]++escape :: TL.Text -> TL.Text+escape = TL.concatMap $ \c -> case c of+	'\t' -> "        "+	'\\' -> "\\\\"+	'{' -> "\\{"+	'}' -> "\\}"+	_ -> TL.singleton c

+ Anansi/Parser.hs view

@@ -0,0 +1,214 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +{-# LANGUAGE OverloadedStrings #-}+{-# LANGUAGE DeriveDataTypeable #-}+module Anansi.Parser+	( ParseError (..)+	, parseFile+	) where+import Prelude hiding (FilePath)+import Control.Applicative ((<|>), (<$>))+import Control.Monad.Trans.Class (lift)+import qualified Control.Monad.Trans.State as S+import qualified Control.Exception as E+import Data.List (unfoldr)+import Data.Typeable (Typeable)+import qualified Text.Parsec as P+import qualified Data.ByteString as B+import qualified Data.Text as T+import qualified Data.Text.Encoding as TE+import qualified Data.Text.Lazy as TL+import qualified Data.Map as Map+import System.FilePath (replaceFileName)+import Anansi.Types+import Anansi.Util++data ParseError = ParseError+	{ parseErrorPosition :: Position+	, parseErrorMessage :: TL.Text+	}+	deriving (Show)++-- too lazy to write proper error handling+data ParseExc = ParseExc ParseError+	deriving (Typeable, Show)++instance E.Exception ParseExc++data Command+	= CommandInclude TL.Text+	| CommandFile TL.Text+	| CommandDefine TL.Text+	| CommandColon+	| CommandEndBlock+	| CommandComment+	deriving (Show)++data Line+	= LineCommand Position Command+	| LineText Position TL.Text+	deriving (Show)++untilChar :: Char -> P.Parsec String u TL.Text+untilChar c = TL.pack <$> P.manyTill P.anyChar (P.try (P.char c))++getPosition :: Monad m => P.ParsecT s u m Position+getPosition = do+	pos <- P.getPosition+	return $ Position (TL.pack (P.sourceName pos)) (toInteger (P.sourceLine pos))++parseLines :: P.Parsec String u [Line]+parseLines = do+	lines' <- P.many parseLine+	P.eof+	return lines'++parseLine :: P.Parsec String u Line+parseLine = command <|> text where+	command = do+		P.char ':'+		pos <- getPosition+		LineCommand pos <$> parseCommand+	+	text = do+		pos <- getPosition+		line <- untilChar '\n'+		return . LineText pos $ TL.append line "\n"++parseCommand :: P.Parsec String u Command+parseCommand = parsed where+	string = P.try . P.string+	parsed = P.choice [file, include, define, colon, comment, endBlock]+	file = do+		string "file " <|> string "f "+		CommandFile <$> untilChar '\n'+	+	include = do+		string "include " <|> string "i "+		CommandInclude <$> untilChar '\n'+	+	define = do+		string "define " <|> string "d "+		-- TODO: verify no '|' in name+		CommandDefine <$> untilChar '\n'+	+	colon = do+		P.char ':'+		return $ CommandColon+	+	comment = do+		P.char '#'+		untilChar '\n'+		return $ CommandComment+	+	endBlock = do+		line <- untilChar '\n'+		if TL.all isSpace line+			then return $ CommandEndBlock+			else do+				pos <- getPosition+				let msg = TL.pack $ "unknown command: " ++ show (TL.append ":" line)+				E.throw $ ParseExc $ ParseError pos msg++-- TODO: more unicode support+isSpace :: Char -> Bool+isSpace ' ' = True+isSpace '\t' = True+isSpace _ = False++parseBlocks :: [Line] -> Maybe (Either ParseError Block, [Line])+parseBlocks [] = Nothing+parseBlocks (line:xs) = parsed where+	parsed = case line of+		LineText _ text -> Just (Right $ BlockText text, xs)+		LineCommand pos cmd -> case cmd of+			CommandFile path -> parseContent pos (BlockFile path) xs+			CommandDefine name -> parseContent pos (BlockDefine name) xs+			CommandColon -> Just (Right $ BlockText ":", xs)+			CommandEndBlock -> Just (Right $ BlockText "\n", xs)+			CommandComment -> Just (Right $ BlockText "", xs)+			CommandInclude _ -> let+				msg = "unexpected CommandInclude (internal error)"+				in Just (Left $ ParseError pos msg, [])++parseContent :: Position -> ([Content] -> Block) -> [Line] -> Maybe (Either ParseError Block, [Line])+parseContent start block = parse [] where+	parse acc [] = Just (Right $ block acc, [])+	parse acc (line:xs) = case line of+		LineText pos text -> case parse' pos text of+			Left err -> Just (Left err, [])+			Right parsed -> parse (acc ++ [parsed]) xs+		LineCommand _ CommandEndBlock -> Just (Right $ block acc, xs)+		LineCommand _ _ -> let+			msg = "Unterminated content block"+			in Just (Left $ ParseError start msg, [])+	+	parse' pos text = case P.parse (parser pos) "" (TL.unpack text) of+		Right content -> Right content+		Left err -> let+			msg = TL.pack $ "Invalid content line " ++ show text ++ ": " ++ show err+			in Left $ ParseError pos msg+	+	parser pos = do+		content <- contentMacro pos <|> contentText pos+		P.optional $ P.char '\n'+		P.eof+		return content+	+	contentMacro pos = do+		(indent, c) <- P.try $ do+			indent <- P.many $ P.satisfy isSpace+			P.char '|'+			c <- P.satisfy (not . isSpace)+			return (indent, c)+		name <- untilChar '|'+		return $ ContentMacro pos (TL.pack indent) (TL.strip (TL.cons c name))+	+	contentText pos = do+		text <- untilChar '\n'+		return . ContentText pos $ text++type FilePath = TL.Text+type FileMap = Map.Map FilePath [Line]++genLines :: Monad m => (FilePath -> m [Line]) -> FilePath -> S.StateT FileMap m [Line]+genLines getLines = genLines' where+	genLines' path = lift (getLines path) >>= concatMapM (resolveIncludes path)+	+	relative x y = TL.pack $ replaceFileName (TL.unpack x) (TL.unpack y)+	+	resolveIncludes root line = case line of+		LineCommand _ (CommandInclude path) -> genLines' $ relative root path+		_ -> return [line]++parseFile :: TL.Text -> IO (Either ParseError [Block])+parseFile root = io where+	io = E.handle onError $ do+		lines' <- S.evalStateT (genLines getLines root) Map.empty+		return . catEithers $ unfoldr parseBlocks lines'+	+	onError (ParseExc err) = return $ Left err+	+	getLines :: FilePath -> IO [Line]+	getLines path = do+		-- TODO: encode 'path' into UTF-8?+		let path' = TL.unpack path+		bytes <- B.readFile path'+		case P.parse parseLines path' (T.unpack $ TE.decodeUtf8 bytes) of+			Right x -> return x+			Left err -> let+				msg = TL.pack $ "getLines parse failed (internal error): " ++ show err+				in E.throw $ ParseExc $ ParseError (Position path 0) msg

+ Anansi/Tangle.hs view

@@ -0,0 +1,98 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +{-# LANGUAGE OverloadedStrings #-}+module Anansi.Tangle (tangle) where+import Control.Monad.Trans.Class (lift)+import qualified Control.Monad.State as S+import qualified Control.Monad.Writer as W+import qualified Data.Text.Lazy as TL+import qualified Data.Map as Map+import Anansi.Types++type ContentMap = Map.Map TL.Text [Content]++data TangleState = TangleState Position TL.Text ContentMap+type TangleT m a = W.WriterT TL.Text (S.StateT TangleState m) a++buildMacros :: [Block] -> ContentMap+buildMacros blocks = S.execState (mapM_ accumMacro blocks) Map.empty++accumMacro :: Block -> S.State ContentMap ()+accumMacro b = case b of+	BlockText _ -> return ()+	BlockFile _ _ -> return ()+	BlockDefine name content -> do+		macros <- S.get+		S.put $ Map.insertWith (\new old -> old ++ new) name content macros++buildFiles :: [Block] -> ContentMap+buildFiles blocks = S.execState (mapM_ accumFile blocks) Map.empty++accumFile :: Block -> S.State ContentMap ()+accumFile b = case b of+	BlockText _ -> return ()+	BlockDefine _ _ -> return ()+	BlockFile name content -> do+		let accum new old = old ++ new+		files <- S.get+		S.put $ Map.insertWith accum name content files++tangle :: Monad m => (TL.Text -> TL.Text -> m ()) -> [Block] -> m ()+tangle writeFile' blocks = S.evalStateT (mapM_ putFile files) initState where+	initState = (TangleState (Position "" 0) "" macros)+	fileMap = buildFiles blocks+	macros = buildMacros blocks+	files = Map.toAscList fileMap+	+	putFile (path, content) = do+		text <- W.execWriterT (mapM_ putContent content)+		lift $ writeFile' path text++putContent :: Monad m => Content -> TangleT m ()+putContent (ContentText pos t) = do+	TangleState _ indent _ <- S.get+	putPosition pos+	W.tell indent+	W.tell t+	W.tell "\n"++putContent (ContentMacro pos indent name) = addIndent putMacro where+	addIndent m = do+		TangleState lastPos old macros <- S.get+		S.put $ TangleState lastPos (TL.append old indent) macros+		m+		TangleState newPos _ _ <- S.get+		S.put $ TangleState newPos old macros+	putMacro = do+		putPosition pos+		lookupMacro name >>= mapM_ putContent++putPosition :: Monad m => Position -> TangleT m ()+putPosition pos = do+	TangleState lastPos indent macros <- S.get+	let expectedPos = Position (positionFile lastPos) (positionLine lastPos + 1)+	let line = "\n#line " ++ show (positionLine pos) ++ " " ++ show (positionFile pos) ++ "\n"+	S.put $ TangleState pos indent macros+	if pos == expectedPos+		then return ()+		else W.tell $ TL.pack line++lookupMacro :: Monad m => TL.Text -> TangleT m [Content]+lookupMacro name = do+	TangleState _ _ macros <- S.get+	case Map.lookup name macros of+		Nothing -> error $ "unknown macro: " ++ show name+		Just content -> return content

+ Anansi/Types.hs view

@@ -0,0 +1,38 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +module Anansi.Types+	( Block (..)+	, Content (..)+	, Position (..)+	) where+import Data.Text.Lazy (Text)++data Block+	= BlockText Text+	| BlockFile Text [Content]+	| BlockDefine Text [Content]+	deriving (Show)++data Content+	= ContentText Position Text+	| ContentMacro Position Text Text+	deriving (Show)++data Position = Position+	{ positionFile :: Text+	, positionLine :: Integer+	}+	deriving (Show, Eq)

+ Anansi/Util.hs view

@@ -0,0 +1,36 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +module Anansi.Util+	( concatMapM+	, replace+	, catEithers+	) where+import Control.Monad (liftM)++concatMapM :: Monad m => (a -> m [b]) -> [a] -> m [b]+concatMapM f xs = liftM concat $ mapM f xs++replace :: Eq a => a -> [a] -> [a] -> [a]+replace from to xs = flip concatMap xs $ \x -> if x == from+	then to+	else [x]++catEithers :: [Either e a] -> Either e [a]+catEithers = cat' [] where+	cat' acc [] = Right $ reverse acc+	cat' acc (e:es) = case e of+		Left err -> Left err+		Right x -> cat' (x : acc) es

+ Main.hs view

@@ -0,0 +1,158 @@+-- Copyright (C) 2010 John Millikin <jmillikin@gmail.com>+-- +-- This program is free software: you can redistribute it and/or modify+-- it under the terms of the GNU General Public License as published by+-- the Free Software Foundation, either version 3 of the License, or+-- any later version.+-- +-- This program is distributed in the hope that it will be useful,+-- but WITHOUT ANY WARRANTY; without even the implied warranty of+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+-- GNU General Public License for more details.+-- +-- You should have received a copy of the GNU General Public License+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.+-- +{-# LANGUAGE OverloadedStrings #-}+module Main (main) where++import Anansi+import Anansi.Util++import Control.Monad (unless)+import Control.Monad.Writer+import Control.Monad.IO.Class (MonadIO, liftIO)+import qualified Data.Text.Lazy as TL+import qualified Data.Text.Lazy.IO as TLIO+import Data.Text.Encoding (encodeUtf8)+import qualified Data.ByteString.Lazy as BL++import System.Console.GetOpt+import System.Directory+import System.Environment+import System.Exit+import System.FilePath+import System.IO hiding (withFile)++data Output = Tangle | Weave++data Option+	= OptionOutput Output+	| OptionOutputPath TL.Text+	| OptionLoom TL.Text++optionInfo :: [OptDescr Option]+optionInfo =+	[ Option ['t'] ["tangle"] (NoArg (OptionOutput Tangle))+	  "Generate tangled source code (default)"+	, Option ['w'] ["weave"] (NoArg (OptionOutput Weave))+	  "Generate woven markup"+	, Option ['o'] ["out", "output"] (ReqArg (OptionOutputPath . TL.pack) "PATH")+	  "Output path (directory for tangle, file for weave)"+	, Option ['l'] ["loom"] (ReqArg (OptionLoom . TL.pack) "NAME")+	  "Which loom should be used to weave output"+	]++usage :: String -> String+usage name = "Usage: " ++ name ++ " [OPTION...]"++getOutput :: [Option] -> Output+getOutput [] = Tangle+getOutput (x:xs) = case x of+	OptionOutput o -> o+	_ -> getOutput xs++getPath :: [Option] -> TL.Text+getPath [] = ""+getPath (x:xs) = case x of+	OptionOutputPath p -> p+	_ -> getPath xs++withFile :: TL.Text -> (Handle -> IO a) -> IO a+withFile path io = case path of+	"" -> io stdout+	_ -> withBinaryFile (TL.unpack path) WriteMode io++loomMap :: [(TL.Text, Loom)]+loomMap = [(loomName l, l) | l <- looms]++getLoom :: [Option] -> Loom+getLoom [] = loomLaTeX+getLoom (x:xs) = case x of+	OptionLoom name -> case lookup name loomMap of+		Just loom -> loom+		Nothing -> error $ "Unknown loom: " ++ show name+	_ -> getLoom xs++main :: IO ()+main = do+	args <- getArgs+	let (options, inputs, errors) = getOpt Permute optionInfo args+	unless (null errors) $ do+		name <- getProgName+		hPutStrLn stderr $ concat errors+		hPutStrLn stderr $ usageInfo (usage name) optionInfo+		exitFailure+	+	let path = getPath options+	let loom = getLoom options+	+	parsed <- parseInputs inputs+	case parsed of+		Left err -> hPutStrLn stderr (formatError err)+		Right blocks -> case getOutput options of+			Tangle -> case path of+				"" -> tangle debugTangle blocks+				_ -> tangle (realTangle path) blocks+			Weave -> let+				texts = execWriter $ loomWeave loom blocks+				in withFile path $ \h -> BL.hPut h $ lazyUtf8 texts++debugTangle :: TL.Text -> TL.Text -> IO ()+debugTangle path text = do+	putStr "\n"+	TLIO.putStrLn path+	putStrLn $ replicate (fromIntegral (TL.length path)) '='+	TLIO.putStr text++realTangle :: TL.Text -> TL.Text -> TL.Text -> IO ()+realTangle root path text = do+	let fullpath = combine (TL.unpack root) (TL.unpack path)+	createDirectoryIfMissing True $ takeDirectory fullpath+	let bytes = lazyUtf8 text+	withBinaryFile fullpath ReadWriteMode $ \h -> do+		equal <- fileContentsEqual h bytes+		unless equal $ do+			hSetFileSize h 0+			BL.hPut h bytes++fileContentsEqual :: Handle -> BL.ByteString -> IO Bool+fileContentsEqual h bytes = do+	hSeek h SeekFromEnd 0+	size <- hTell h+	hSeek h AbsoluteSeek 0+	+	if size /= toInteger (BL.length bytes)+		then return False+		else do+			-- FIXME: 'Int' overflow?+			contents <- BL.hGet h (fromInteger size)+			hSeek h AbsoluteSeek 0+			return $ bytes == contents++parseInputs :: [String] -> IO (Either ParseError [Block])+parseInputs inputs = do+	eithers <- mapM (parseFile . TL.pack) inputs+	return $ case catEithers eithers of+		Left err -> Left err+		Right bs -> Right $ concat bs++formatError :: ParseError -> String+formatError err = concat [filename, ":", line, ": error: ", message] where+	pos = parseErrorPosition err+	filename = TL.unpack $ positionFile pos+	line = show $ positionLine pos+	message = TL.unpack $ parseErrorMessage err++lazyUtf8 :: TL.Text -> BL.ByteString+lazyUtf8 = BL.fromChunks . map encodeUtf8 . TL.toChunks

+ Setup.hs view

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

+ anansi.cabal view

@@ -0,0 +1,49 @@+name: anansi+version: 0.1+synopsis: Simple literate programming preprocessor+license: GPL-3+license-file: license.txt+author: John Millikin+maintainer: jmillikin@gmail.com+build-type: Simple+cabal-version: >=1.6+category: Development+stability: experimental+bug-reports: mailto:jmillikin@gmail.com+homepage: http://ianen.org/haskell/anansi/+tested-with: GHC==6.12.1++source-repository head+  type: darcs+  location: http://ianen.org/haskell/anansi/++library+  ghc-options: -Wall -fno-warn-unused-do-bind++  build-depends:+      base >=4.0 && < 5.0+    , parsec >= 3.0 && < 4+    , bytestring >= 0.9 && < 0.10+    , text >= 0.7 && < 0.8+    , transformers >= 0.2 && < 0.3+    , monads-tf >= 0.1 && < 0.2+    , containers >= 0.1 && < 0.4+    , filepath >= 1.1 && < 1.2+    , directory >= 1.0 && < 1.1++  exposed-modules:+    Anansi++  other-modules:+    Anansi.Loom+    Anansi.Loom.Debug+    Anansi.Loom.HTML+    Anansi.Loom.LaTeX+    Anansi.Loom.NoWeb+    Anansi.Parser+    Anansi.Tangle+    Anansi.Types+    Anansi.Util++executable anansi+  main-is: Main.hs

+ license.txt view

@@ -0,0 +1,674 @@+                    GNU GENERAL PUBLIC LICENSE+                       Version 3, 29 June 2007++ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>+ Everyone is permitted to copy and distribute verbatim copies+ of this license document, but changing it is not allowed.++                            Preamble++  The GNU General Public License is a free, copyleft license for+software and other kinds of works.++  The licenses for most software and other practical works are designed+to take away your freedom to share and change the works.  By contrast,+the GNU General Public License is intended to guarantee your freedom to+share and change all versions of a program--to make sure it remains free+software for all its users.  We, the Free Software Foundation, use the+GNU General Public License for most of our software; it applies also to+any other work released this way by its authors.  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"Knowingly relying" means you have+actual knowledge that, but for the patent license, your conveying the+covered work in a country, or your recipient's use of the covered work+in a country, would infringe one or more identifiable patents in that+country that you have reason to believe are valid.++  If, pursuant to or in connection with a single transaction or+arrangement, you convey, or propagate by procuring conveyance of, a+covered work, and grant a patent license to some of the parties+receiving the covered work authorizing them to use, propagate, modify+or convey a specific copy of the covered work, then the patent license+you grant is automatically extended to all recipients of the covered+work and works based on it.++  A patent license is "discriminatory" if it does not include within+the scope of its coverage, prohibits the exercise of, or is+conditioned on the non-exercise of one or more of the rights that are+specifically granted under this License.  You may not convey a covered+work if you are a party to an arrangement with a third party that is+in the business of distributing software, under which you make payment+to the third party based on the extent of your activity of conveying+the work, and under which the third party grants, to any of the+parties who would receive the covered work from you, a discriminatory+patent license (a) in connection with copies of the covered work+conveyed by you (or copies made from those copies), or (b) primarily+for and in connection with specific products or compilations that+contain the covered work, unless you entered into that arrangement,+or that patent license was granted, prior to 28 March 2007.++  Nothing in this License shall be construed as excluding or limiting+any implied license or other defenses to infringement that may+otherwise be available to you under applicable patent law.++  12. No Surrender of Others' Freedom.++  If conditions are imposed on you (whether by court order, agreement or+otherwise) that contradict the conditions of this License, they do not+excuse you from the conditions of this License.  If you cannot convey a+covered work so as to satisfy simultaneously your obligations under this+License and any other pertinent obligations, then as a consequence you may+not convey it at all.  For example, if you agree to terms that obligate you+to collect a royalty for further conveying from those to whom you convey+the Program, the only way you could satisfy both those terms and this+License would be to refrain entirely from conveying the Program.++  13. Use with the GNU Affero General Public License.++  Notwithstanding any other provision of this License, you have+permission to link or combine any covered work with a work licensed+under version 3 of the GNU Affero General Public License into a single+combined work, and to convey the resulting work.  The terms of this+License will continue to apply to the part which is the covered work,+but the special requirements of the GNU Affero General Public License,+section 13, concerning interaction through a network will apply to the+combination as such.++  14. Revised Versions of this License.++  The Free Software Foundation may publish revised and/or new versions of+the GNU General Public License from time to time.  Such new versions will+be similar in spirit to the present version, but may differ in detail to+address new problems or concerns.++  Each version is given a distinguishing version number.  If the+Program specifies that a certain numbered version of the GNU General+Public License "or any later version" applies to it, you have the+option of following the terms and conditions either of that numbered+version or of any later version published by the Free Software+Foundation.  If the Program does not specify a version number of the+GNU General Public License, you may choose any version ever published+by the Free Software Foundation.++  If the Program specifies that a proxy can decide which future+versions of the GNU General Public License can be used, that proxy's+public statement of acceptance of a version permanently authorizes you+to choose that version for the Program.++  Later license versions may give you additional or different+permissions.  However, no additional obligations are imposed on any+author or copyright holder as a result of your choosing to follow a+later version.++  15. Disclaimer of Warranty.++  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.++  16. Limitation of Liability.++  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF+SUCH DAMAGES.++  17. Interpretation of Sections 15 and 16.++  If the disclaimer of warranty and limitation of liability provided+above cannot be given local legal effect according to their terms,+reviewing courts shall apply local law that most closely approximates+an absolute waiver of all civil liability in connection with the+Program, unless a warranty or assumption of liability accompanies a+copy of the Program in return for a fee.++                     END OF TERMS AND CONDITIONS++            How to Apply These Terms to Your New Programs++  If you develop a new program, and you want it to be of the greatest+possible use to the public, the best way to achieve this is to make it+free software which everyone can redistribute and change under these terms.++  To do so, attach the following notices to the program.  It is safest+to attach them to the start of each source file to most effectively+state the exclusion of warranty; and each file should have at least+the "copyright" line and a pointer to where the full notice is found.++    <one line to give the program's name and a brief idea of what it does.>+    Copyright (C) <year>  <name of author>++    This program is free software: you can redistribute it and/or modify+    it under the terms of the GNU General Public License as published by+    the Free Software Foundation, either version 3 of the License, or+    (at your option) any later version.++    This program is distributed in the hope that it will be useful,+    but WITHOUT ANY WARRANTY; without even the implied warranty of+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+    GNU General Public License for more details.++    You should have received a copy of the GNU General Public License+    along with this program.  If not, see <http://www.gnu.org/licenses/>.++Also add information on how to contact you by electronic and paper mail.++  If the program does terminal interaction, make it output a short+notice like this when it starts in an interactive mode:++    <program>  Copyright (C) <year>  <name of author>+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.+    This is free software, and you are welcome to redistribute it+    under certain conditions; type `show c' for details.++The hypothetical commands `show w' and `show c' should show the appropriate+parts of the General Public License.  Of course, your program's commands+might be different; for a GUI interface, you would use an "about box".++  You should also get your employer (if you work as a programmer) or school,+if any, to sign a "copyright disclaimer" for the program, if necessary.+For more information on this, and how to apply and follow the GNU GPL, see+<http://www.gnu.org/licenses/>.++  The GNU General Public License does not permit incorporating your program+into proprietary programs.  If your program is a subroutine library, you+may consider it more useful to permit linking proprietary applications with+the library.  If this is what you want to do, use the GNU Lesser General+Public License instead of this License.  But first, please read+<http://www.gnu.org/philosophy/why-not-lgpl.html>.