chatty-text (empty) → 0.6

raw patch · 7 files changed

+1129/−0 lines, 7 filesdep +basedep +chattydep +transformerssetup-changed

Dependencies added: base, chatty, transformers

Files

• LICENSE +661/−0
• Setup.hs +2/−0
• Text/Chatty/Parser.hs +120/−0
• Text/Chatty/Parser/Carrier.hs +86/−0
• Text/Chatty/Parser/Nondeterministic.hs +86/−0
• Text/Chatty/Typograph.hs +107/−0
• chatty-text.cabal +67/−0

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If not, see <http://www.gnu.org/licenses/>.++Also add information on how to contact you by electronic and paper mail.++  If your software can interact with users remotely through a computer+network, you should also make sure that it provides a way for users to+get its source.  For example, if your program is a web application, its+interface could display a "Source" link that leads users to an archive+of the code.  There are many ways you could offer source, and different+solutions will be better for different programs; see section 13 for the+specific requirements.++  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 AGPL, see+<http://www.gnu.org/licenses/>.

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

@@ -0,0 +1,120 @@+{-# LANGUAGE ScopedTypeVariables #-}++{-+  This module is part of Chatty.+  Copyleft (c) 2014 Marvin Cohrs++  All wrongs reversed. Sharing is an act of love, not crime.+  Please share Antisplice with everyone you like.++  Chatty is free software: you can redistribute it and/or modify+  it under the terms of the GNU Affero General Public License as published by+  the Free Software Foundation, either version 3 of the License, or+  (at your option) any later version.++  Chatty 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 Affero General Public License for more details.++  You should have received a copy of the GNU Affero General Public License+  along with Chatty. If not, see <http://www.gnu.org/licenses/>.+-}++-- | Provides the ChParser typeclass and some methods for input parsing.+module Text.Chatty.Parser where++import Control.Monad+import Data.Char+import Text.Chatty.Scanner++-- | Typeclass for input parsing.+class ChScanner m => ChParser m where+  -- | Abort the parse process.+  pabort :: m a+  -- | Provide an alternative if the first choice fails. This version nubs the available forks and thus only works with instances of 'Eq'.+  (??) :: Eq a => m a -> m a -> m a+  -- | Provide an alternative if the first choice fails. This version works for everything, but you should use '??' whenever possible.+  (???) :: m a -> m a -> m a+  -- | Find all/one solution(s) for the given parsing function+  ptry :: MonadPlus n => m a -> m (n a)++-- | An prettier alias for 'mscan1'. It scans and removes the next available character.+request :: ChScanner m => m Char+request = mscan1++-- | Scan the next character and abort if it does not match the given one.+match :: ChParser m => Char -> m Char+match c = do+  k <- request+  if k == c then return c else pabort++-- | Try to match all of the given characters. Abort otherwise.+matchs :: ChParser m => String -> m String+matchs [] = return []+matchs (c:cs) = do+  match c+  matchs cs+  return (c:cs)++-- | Try to match a whitespace. Abort otherwise.+white :: ChParser m => m Char+white = do+  k <- request+  if isSpace k then return k else pabort++-- | Try to match a digit. Abort otherwise.+digit :: ChParser m => m Int+digit = do+  k <- request+  if isDigit k then return (read [k]) else pabort++-- | Try to match a letter. Abort otherwise.+alpha :: ChParser m => m Char+alpha = do+  k <- request+  if isAlpha k then return k else pabort++-- | Try to match a letter or digit. Abort otherwise.+anum :: ChParser m => m Char+anum = do+  k <- request+  if isAlphaNum k then return k else pabort++-- | Try to run the given parsing function. Return 'Nothing' otherwise.+possibly :: ChParser m => m a -> m (Maybe a)+possibly f = liftM Just f ??? return Nothing++-- | Try to run the given parsing function as often as possible.+many :: ChParser m => m a -> m [a]+many f = do+  x <- possibly f+  case x of+    Nothing -> return []+    Just x -> do+      xs <- many f+      return (x : xs)++-- | Try to run the given parsing function as often as possible, but at least once. Abort otherwise.+some :: ChParser m => m a -> m [a]+some f = do+  x <- f+  xs <- many f+  return (x : xs)++-- | Try to match a natural decimal number.+number :: ChParser m => m Int+number = do+  many white+  ds <- some digit+  many white+  return $ foldl (\k n -> k * 10 + n) 0 ds++-- | Try to match a fractional number.+fract :: ChParser m => m Double+fract = liftM fromIntegral number ?? do+  many white+  (ds :: [Integer]) <- liftM (map fromIntegral) $ many digit+  match '.' ?? match ','+  (es :: [Integer]) <- liftM (map fromIntegral) $ many digit+  return (fromIntegral (foldl (\k n -> k * 10 + n) 0 (ds++es)) / (10 ^ length es))

@@ -0,0 +1,86 @@+{-+  This module is part of Chatty.+  Copyleft (c) 2014 Marvin Cohrs++  All wrongs reversed. Sharing is an act of love, not crime.+  Please share Antisplice with everyone you like.++  Chatty is free software: you can redistribute it and/or modify+  it under the terms of the GNU Affero General Public License as published by+  the Free Software Foundation, either version 3 of the License, or+  (at your option) any later version.++  Chatty 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 Affero General Public License for more details.++  You should have received a copy of the GNU Affero General Public License+  along with Chatty. If not, see <http://www.gnu.org/licenses/>.+-}++-- | Provides a nondeterministic 'MonadParser' instance.+module Text.Chatty.Parser.Carrier where++import Control.Applicative+import Control.Monad+import Data.List+import Data.Monoid+import qualified Data.Foldable as F+import Text.Chatty.Parser+import Text.Chatty.Scanner++data CarrierT m a = Carry { carry :: String -> m (a,String) }++instance (MonadPlus m,F.Foldable m) => Monad (CarrierT m) where+  return a = Carry $ \s -> return (a,s)+  m >>= f = Carry $ \s -> msum [carry (f a) cs' | (a,cs') <- F.foldr (:) [] $ carry m s]+  fail _ = Carry $ const mzero++instance (MonadPlus m,F.Foldable m) => Functor (CarrierT m) where+  fmap = liftM++instance (MonadPlus m,F.Foldable m) => Applicative (CarrierT m) where+  pure = return+  f <*> a = f `ap` a++instance (MonadPlus m,F.Foldable m) => Alternative (CarrierT m) where+  empty = pabort+  a <|> b = a ??? b++instance (MonadPlus m,F.Foldable m) => MonadPlus (CarrierT m) where+  mzero = empty+  a `mplus` b = a <|> b++instance (MonadPlus m,F.Foldable m) => Monoid (CarrierT m a) where+  mempty = empty+  a `mappend` b = a <|> b++instance (MonadPlus m,F.Foldable m) => ChScanner (CarrierT m) where+  mscan1 = Carry $ \cx -> case cx of+                               c:cs -> return (c,cs)+                               [] -> mzero+  mscanL = Carry $ \cs -> return (cs,[])+  mscannable = Carry $ \cs -> return (not (null cs), cs)+  mready = mscannable++instance (MonadPlus m,F.Foldable m) => ChParser (CarrierT m) where+  pabort = Carry $ \s -> mzero+  p ??? q = Carry $ \cs -> carry p cs `mplus` carry q cs+  p ?? q = Carry $ \cs -> msum $ liftM return $ nub $ F.foldr (:) [] (carry p cs `mplus` carry q cs)+  ptry p = Carry $ \cs -> msum $ liftM return+                          $ map (\((a,s):as) -> (msum $ liftM return (a:map fst as), s))+                          $ groupBy (\a b -> snd a == snd b)+                          $ sortBy (\a b -> snd a `compare` snd b)+                          $ F.foldr (:) []+                          $ carry p cs++-- | Run a 'CarrierT' with its full input string.+runCarrierT :: (MonadPlus m,F.Foldable m) => String -> CarrierT m a -> m a+runCarrierT s c = liftM fst $ mfilter (\x -> null (snd x)) $ carry c s++-- | Embed the 'CarrierT' into a running 'MonadScanner' instance.+embedCarrierT :: (MonadPlus n,F.Foldable n,ChScanner m) => CarrierT n a -> m (n a)+embedCarrierT f = do+  s <- mscanL+  return $ runCarrierT s f

@@ -0,0 +1,86 @@+{-+  This module is part of Chatty.+  Copyleft (c) 2014 Marvin Cohrs++  All wrongs reversed. Sharing is an act of love, not crime.+  Please share Antisplice with everyone you like.++  Chatty is free software: you can redistribute it and/or modify+  it under the terms of the GNU Affero General Public License as published by+  the Free Software Foundation, either version 3 of the License, or+  (at your option) any later version.++  Chatty 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 Affero General Public License for more details.++  You should have received a copy of the GNU Affero General Public License+  along with Chatty. If not, see <http://www.gnu.org/licenses/>.+-}++-- | Provides a nondeterministic 'ChParser' instance.+module Text.Chatty.Parser.Nondeterministic where++import Control.Monad+import Data.List+import qualified Data.Foldable as F+import Text.Chatty.Parser+import Text.Chatty.Scanner++-- | A nondeterministic parsing monad. Works by keeping multiple forks until they fail. May return multiple solutions. First parameter should be an instance of 'MonadPlus' and 'Foldable'.+data ForkerT m a = Result (m a) (Char -> ForkerT m a) | Failed++instance (MonadPlus m,F.Foldable m) => Monad (ForkerT m) where+  return a = Result (return a) $ const Failed+  (Result as f) >>= m = Result (results >>= rResult) (\k -> F.foldl (???) (f k >>= m) (liftM (flip rFunction k) results))+    where isResult (Result _ _) = True+          isResult _ = False+          rResult (Result x _) = x+          rFunction (Result _ f) = f+          results = mfilter isResult $ liftM m as+  Failed >>= m = Failed+  fail _ = Failed++instance (MonadPlus m,F.Foldable m) => ChParser (ForkerT m) where+  pabort = Failed+  Failed ?? b = b+  a ?? Failed = a+  (Result as f) ?? (Result bs g) = Result (msum $ liftM return $ nub $ F.foldr (:) [] $ mplus as bs) $ \k -> f k ?? g k+  Failed ??? b = b+  a ??? Failed = a+  (Result as f) ??? (Result bs g) = Result (mplus as bs) $ \k -> f k ??? g k+  ptry Failed = Failed+  ptry (Result as f) = Result (msum $ liftM return [msum $ liftM return $ F.foldr (:) [] as]) $ \k -> ptry $ f k++instance (MonadPlus m,F.Foldable m) => ChScanner (ForkerT m) where+  mscan1 = Result mzero return+  mscanL = do+    c <- mscan1+    cs <- mscanL+    return (c:cs)+  mscannable = return True+  mready = return False++-- | Feed the 'ForkerT' with a single input character.+feedForkerT1 :: (MonadPlus m,F.Foldable m) => Char -> ForkerT m a -> ForkerT m a+feedForkerT1 _ Failed = Failed+feedForkerT1 c (Result _ f) = f c++-- | Feed the 'ForkerT' with some input string.+feedForkerT :: (MonadPlus m,F.Foldable m) => String -> ForkerT m a -> ForkerT m a+feedForkerT [] = id+feedForkerT (c:cs) = feedForkerT cs . feedForkerT1 c++-- | Embed the 'ForkerT' into a running 'MonadScanner' instance.+embedForkerT :: (MonadPlus n,F.Foldable n,ChScanner m) => ForkerT n a -> m (n a)+embedForkerT f = do+  b <- mscannable+  if not b then+      case f of+        Failed -> return mzero+        Result xs _ -> return xs+    else do+      k <- mscan1+      embedForkerT $ feedForkerT1 k f+        

@@ -0,0 +1,107 @@+{-# LANGUAGE ScopedTypeVariables #-}++{-+  This module is part of Chatty.+  Copyleft (c) 2014 Marvin Cohrs++  All wrongs reversed. Sharing is an act of love, not crime.+  Please share Antisplice with everyone you like.++  Chatty is free software: you can redistribute it and/or modify+  it under the terms of the GNU Affero General Public License as published by+  the Free Software Foundation, either version 3 of the License, or+  (at your option) any later version.++  Chatty 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 Affero General Public License for more details.++  You should have received a copy of the GNU Affero General Public License+  along with Chatty. If not, see <http://www.gnu.org/licenses/>.+-}++-- | Provides functions that typeset the input to a limited output width (to avoid ugly word cuts).+module Text.Chatty.Typograph where++import Control.Monad+import Control.Monad.Trans.Class+import Data.Char+import Data.List+import Text.Chatty.Interactor+import Text.Chatty.Printer+import Text.Chatty.Scanner+import Text.Chatty.Scanner.Buffered++-- | Simple flush-left typesetter without support for syllabification.+simpleTypesetter :: (Functor m,ChScanner m,ChPrinter m) => Int -> m ()+simpleTypesetter width = void $ runScannerBufferT (typeset width) [""]+  where scanw = mscannable >>= \b -> if not b then return [] else do+          k <- mpeek1+          if isSpace k then return [] else do+            mscan1+            ks <- scanw+            return (k:ks)+        skipw :: ChBufferedScanner m => m Int+        skipw = mscannable >>= \b -> if not b then return 0 else do+          k <- mpeek1+          if not (isSpace k) then return 0 else do+            mscan1+            w <- skipw+            return (w + if k == '\n' then 1 else 0)+        tsetw i w+          | length w < i = mprint (w ++ " ") >> typeset (i - 1 - length w)+          | length w == i = mprintLn w >> typeset width+          | length w > width && i == width = mprintLn (take i w) >> tsetw width (drop i w)+          | otherwise = mprintLn "" >> tsetw width w+        typeset i = mscannable >>= \b -> when b $ do+          ls <- skipw+          if ls > 0+            then forM_ [1..ls] (const $ mprintLn "") >> typeset width+            else do+              w <- scanw+              tsetw i w++-- | Backtracking flush-left typesetter using the given hyphenator function.+leftTypesetter :: (Functor m,ChScanner m,ChPrinter m) => Int -> (String -> [String]) -> m ()+leftTypesetter width hyphen = void $ runScannerBufferT paragraphs [""]+  where scanw :: ChBufferedScanner m => m String+        scanw = mscannable >>= \b -> if not b then return [] else do+          k <- mpeek1+          if isSpace k then return [] else do+            mscan1+            ks <- scanw+            return (k:ks)+        skipw :: ChBufferedScanner m => m Int+        skipw = mscannable >>= \b -> if not b then return 0 else do+          k <- mpeek1+          if not (isSpace k) then return 0 else do+            mscan1+            w <- skipw+            return (w + if k == '\n' then 1 else 0)+        combis [] [] = []+        combis w (a:as) = (w,concat (a:as)) : combis (w++a) as+        tsetw :: Int -> String -> [(String,Int,Int)]+        tsetw i w = do+              a <- [("",i),("\n",width)]+              concatMap (\(b,c) -> if b == "" then return (fst a++c++if length c < snd a then " " else "", snd a-length c - 1, 0) else do+                           (dw,di,du) <- tsetw width c+                           return (fst a++b++"-\n"++dw, di, du+1)+                       ) $ filter (\(b,c) -> if b /= "" then length b < snd a else length c <= snd a) $ combis [] $ hyphen w+        paragraphs =+          paragraph >>= \x -> case x of+            Nothing -> return ()+            Just s -> mprint s >> paragraphs+        paragraph = mscannable >>= \b -> if not b then return Nothing else do+          ts <- typeset width+          case map (\(w,i,u) -> (w, u*u + sum (map (\s -> (width - length s) * (width - length s)) $ lines w))) ts of+            [] -> return Nothing+            cs -> return $ Just $ fst $ minimumBy (\a b -> snd a `compare` snd b) cs+        typeset i = mscannable >>= \b -> if not b then return [("",i,0)] else do+          ls <- skipw+          if ls > 0 then return [(replicate ls '\n', width, 0)] else do+            w <- scanw+            let ts = tsetw i w+            tx <- return ()+            return []+            -- IMPLEMENT THIS!!!!

@@ -0,0 +1,67 @@+-- Initial chatty-text.cabal generated by cabal init.  For further +-- documentation, see http://haskell.org/cabal/users-guide/++-- The name of the package.+name:                chatty-text++-- The package version.  See the Haskell package versioning policy (PVP) +-- for standards guiding when and how versions should be incremented.+-- http://www.haskell.org/haskellwiki/Package_versioning_policy+-- PVP summary:      +-+------- breaking API changes+--                   | | +----- non-breaking API additions+--                   | | | +--- code changes with no API change+version:             0.6++-- A short (one-line) description of the package.+synopsis:            Provides some classes and types for dealing with text, using the fundaments of Chatty.++-- A longer description of the package.+description:         Provides some classes and types for dealing with text, using the fundaments of Chatty. Mainly two parser monads and a typesetter.++-- The license under which the package is released.+license:             AGPL-3++-- The file containing the license text.+license-file:        LICENSE++-- The package author(s).+author:              Marvin Cohrs++-- An email address to which users can send suggestions, bug reports, and +-- patches.+maintainer:          m@doomanddarkness.eu++-- A copyright notice.+-- copyright:           ++category:            Text++build-type:          Simple++-- Extra files to be distributed with the package, such as examples or a +-- README.+-- extra-source-files:  ++-- Constraint on the version of Cabal needed to build this package.+cabal-version:       >=1.10+++library+  -- Modules exported by the library.+  exposed-modules:     Text.Chatty.Typograph, Text.Chatty.Parser, Text.Chatty.Parser.Carrier, Text.Chatty.Parser.Nondeterministic+  +  -- Modules included in this library but not exported.+  -- other-modules:       +  +  -- LANGUAGE extensions used by modules in this package.+  -- other-extensions:    +  +  -- Other library packages from which modules are imported.+  build-depends:       base >=4.6 && <4.7, chatty >= 0.6 && < 0.7, transformers >=0.3 && <0.4+  +  -- Directories containing source files.+  -- hs-source-dirs:      +  +  -- Base language which the package is written in.+  default-language:    Haskell2010+