diff --git a/Cake.hs b/Cake.hs new file mode 100644 --- /dev/null +++ b/Cake.hs @@ -0,0 +1,8 @@ +module Cake (module Cake.Core, + module Cake.Rules) where + +import Cake.Core +import Cake.Rules + + + diff --git a/Cake/Core.hs b/Cake/Core.hs new file mode 100644 --- /dev/null +++ b/Cake/Core.hs @@ -0,0 +1,148 @@ +module Cake.Core (Pattern, (==>), + cake, + query, + cut, + promise, + need, + debug, + module Control.Applicative, + Act, + ) where + +import "pureMD5" Data.Digest.Pure.MD5 +-- import Data.Digest.OpenSSL.MD5 -- "nano-md5" -- md5sum + +import qualified Data.ByteString.Lazy as B +import System.Directory +import System.FilePath +import Control.Applicative +import Control.Monad (when) +import Control.Monad.RWS +import qualified Parsek +import Parsek (completeResults, parse, Parser) +import qualified Data.Map as M +import Data.Binary hiding (put,get) +import Text.Groom +import qualified System.Process as P +import System.Exit + +instance Applicative P where + (<*>) = ap + pure = return + +instance Alternative P where + (<|>) = (Parsek.<|>) + empty = Parsek.pzero + + +type Pattern = P String + +type P = Parser Char +type Rule = P (Act ()) + +data Status = Clean | Dirty + deriving Eq + + +(==>) :: Pattern -> (String -> Act a) -> Rule +p ==> a = (\s -> do a s;return ()) <$> p + +newtype LocalR = LocalR {fromLocalR :: P (Act ())} + + +cakeFile = ".cake" + +cake :: [FilePath] -> Rule -> IO () +cake targets rule = do + e <- doesFileExist cakeFile + oldDB <- if e + then decodeFile cakeFile + else return $ M.empty + newDB <- runAct rule oldDB $ mapM_ need targets + putStrLn $ "Database is:" + putStrLn (groom newDB) + encodeFile cakeFile newDB + + +newtype Question = Stamp FilePath deriving (Eq, Ord, Binary, Show) + +newtype Answer = Stamp' (Maybe MD5Digest) deriving (Eq, Binary, Show) + +type DB = M.Map Question Answer + +promise :: FilePath -> Act () -> Act () +promise f a = shielded $ do + e0 <- liftIO $ doesFileExist f + when (not e0) $ put Dirty -- force rebuilding if the target is missing. + a + e <- liftIO $ doesFileExist f + when (not e) $ fail $ "Action failed to create " ++ f + +-- Assume that the context is clean; that is, the construction of the +-- argument actually does not depend on the previous questions asked. +-- NOTE: This can be used only when the purpose of the argument (why +-- we call it) is known; and then the dirty flag must be set if the +-- produced object is not present. +shielded = withRWST (\r _ -> (r,Clean)) + + +runAct r db act = do + (_a,db) <- evalRWST act (LocalR r,db) Clean + return db + +findRule :: FilePath -> Act (Maybe (Act ())) +findRule f = do + (LocalR r,_) <- ask + let rs = parse r completeResults f + case rs of + Right [x] -> return (Just x) + Right _ -> fail $ "More than one rule for file " ++ f + Left e -> do + debug $ "No rule for file: " ++ f + -- debug $ "Parser says: " ++ show e + return Nothing + + + +-- runAct :: Act () -> RWST (Rule,DB) DB Status IO +type Act = RWST (LocalR,DB) DB Status IO +runAct :: Rule -> DB -> Act () -> IO DB + +debug x = liftIO $ putStrLn $ "Info: " ++ x + +runQuery :: Question -> IO Answer +runQuery (Stamp f) = do + e <- doesFileExist f + Stamp' <$> if e + then Just <$> md5 <$> B.readFile f + else return Nothing + +query :: Question -> Act Answer +query q = do + a <- liftIO $ runQuery q + tell (M.singleton q a) + (_,db) <- ask + let a0 = M.lookup q db + when (a0 /= Just a) $ do + debug $ "Question has not the same answer: " ++ show q + put Dirty + return $ a + +cut x = do + d <- get + case d of + Clean -> debug $ "Clean state; skipping." + Dirty -> x + +need :: FilePath -> Act () +need f = do + debug $ "Need: " ++ f + r <- findRule f + case r of + Nothing -> do + e <- liftIO $ doesFileExist f + when (not e) $ fail $ "No rule to create " ++ f + debug $ "File exists: " ++ f + Just a -> promise f a + query (Stamp f) + return () diff --git a/Cake/Rules.hs b/Cake/Rules.hs new file mode 100644 --- /dev/null +++ b/Cake/Rules.hs @@ -0,0 +1,98 @@ +module Cake.Rules where + +import Cake.Core +import qualified Parsek +import System.Directory +import System.FilePath +import Control.Applicative +import Control.Monad (when) +import Control.Monad.RWS +import qualified Parsek +import Parsek (completeResults, parse, Parser) +import qualified Data.Map as M +import Data.Binary hiding (put,get) +import Text.Groom +import qualified System.Process as P +import System.Exit +import Data.List + + +-- Helpers +quote :: String -> String +quote = show + +-- Patterns +extension :: String -> Pattern +extension s = Parsek.many Parsek.anyChar <* Parsek.string s + +-- Actions +copy :: FilePath -> FilePath -> Act() +copy from to = promise to $ needing [from] $ do + mkdir $ takeDirectory to + liftIO $ copyFile from to + +system' :: [String] -> Act ExitCode +system' xs = do + debug $ "Running: " ++ (intercalate " " xs) + liftIO $ P.system (intercalate " " $ map quote xs) + +succeed :: Act ExitCode -> Act () +succeed act = do + code <- act + when (code /= ExitSuccess) $ fail "Command returned non-zero exitcode." + +mkdir :: FilePath -> Act () +mkdir d = liftIO $ createDirectoryIfMissing True d + +system xs = succeed $ system' xs + +touch :: FilePath -> Act () +touch x = do + system ["touch",x] + +readFile :: FilePath -> Act String +readFile x = do + need x + liftIO $ Prelude.readFile x + + +{- +mpostDeriv = extension "-delayed.mp" ==> \s -> do + let input = s ++ ".mp" + need input + rm (s ++ "-delayed.mp") + mpost input + mpost input + -} + +needing :: [FilePath] -> Act () -> Act () +needing xs act = do + mapM_ need xs + cut act + +-- Rules + +simple outExt inExt f = extension outExt ==> \s -> do + let input = s ++ inExt + output = s ++ outExt + needing [input] $ f output input + + +tex_markdown_standalone = simple ".tex" ".markdown" $ \o i -> + system ["pandoc","--tab-stop=2","--standalone","-f","markdown","-t","latex", + "-o", o, i] + +pdf_tex = simple ".pdf" ".tex" $ \o i -> + system ["latexmk","-pdf",i] + +{- +pdf_tex2 = extension ".pdf" $ \c -> do + let input = extension ".tex" + ls <- filter ("\\bibliography" `isPrefixOf`) lines <$> readFile input + cut $ do + case ls of + [] -> return () + (l:_) -> do let l' = reverse . dropWhile (== '}') . dropWhile . reverse . dropWhile (== '{') $ l + bibs = spli +-} +allRules = tex_markdown_standalone <|> pdf_tex diff --git a/LICENSE b/LICENSE new file mode 100644 --- /dev/null +++ b/LICENSE @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,2 @@ +import Distribution.Simple +main = defaultMain diff --git a/cake.cabal b/cake.cabal new file mode 100644 --- /dev/null +++ b/cake.cabal @@ -0,0 +1,28 @@ +name: cake +version: 0.0.1 +category: Development +synopsis: A build-system library +description: + Soon to appear. +license: GPL +license-file: LICENSE +author: Jean-Philippe Bernardy +maintainer: jeanphilippe.bernardy@gmail.com +Cabal-Version: >= 1.8 +tested-with: GHC==6.12.1 +build-type: Simple + +library + extensions: PackageImports, GeneralizedNewtypeDeriving, TypeSynonymInstances + build-depends: base==4.* + build-depends: mtl==2.0.* + build-depends: filepath==1.1.* + build-depends: process==1.0.* + build-depends: groom==0.1.* + build-depends: binary==0.5.* + build-depends: containers==0.3.* + build-depends: directory==1.0.* + build-depends: Encode==1.3.* + build-depends: bytestring==0.9.* + build-depends: pureMD5==2.1.* + exposed-modules: Cake, Cake.Core, Cake.Rules