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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/Setup.lhs b/Setup.lhs new file mode 100644 --- /dev/null +++ b/Setup.lhs @@ -0,0 +1,6 @@ +#!/usr/bin/env runhaskell + +> import Distribution.Simple + +> main = defaultMain + diff --git a/src/Data/Text/Terminal.hs b/src/Data/Text/Terminal.hs new file mode 100644 --- /dev/null +++ b/src/Data/Text/Terminal.hs @@ -0,0 +1,356 @@ +module Data.Text.Terminal where + + +import qualified Prologue as P +import Prologue hiding ((:>), Empty, Bounded, div, simple, concat, putStr, swapped, length, putStrLn, take, drop) + +import qualified Control.Monad.State.Layered as State +import qualified Data.Text as Text +import qualified Data.Text.IO as Text +import qualified Data.Text.Lazy as LazyText +import qualified Data.Text.Lazy.Builder as Text +import qualified System.Console.ANSI as ANSI +import qualified System.Console.ANSI.Types as ANSI +import qualified System.IO as System +import System.IO (Handle, stdout) + +-- import Data.Container.Class hiding (intercalate) +-- import Data.Container.Sequence + + +------------------- +-- === Style === -- +------------------- + +-- === Definition === -- + +data Style = Style { _weightStyle :: !WeightType + , _italicStyle :: !Bool + , _underlineStyle :: !(Maybe UnderlineType) + , _blinkingStyle :: !(Maybe BlinkSpeed) + , _swappedStyle :: !Bool + , _fgColorStyle :: !(Maybe Color) + , _bgColorStyle :: !(Maybe Color) + } deriving (Show, Eq) + +data StyleChange = WeightChange !WeightType + | ItalicChange !Bool + | UnderlineChange !(Maybe UnderlineType) + | BlinkingChange !(Maybe BlinkSpeed) + | SwappedChange !Bool + | FgColorChange !(Maybe Color) + | BgColorChange !(Maybe Color) + deriving (Show, Eq) + +-- | We can set color using 3 ways: +-- - ANSIColor provides 8 different colors (each available in 2 intensivites - vivid and dull) and it is widely supported by almost all Unix terminals and older Windows releases +-- - Color256 provides 256 predefined colors and it is widely supported by almost all Unix terminals and Windows release 10 and newer (color chart: https://upload.wikimedia.org/wikipedia/commons/1/15/Xterm_256color_chart.svg) +-- - ColorRGB provides 24bit true colour (16 milion colors) and it is supported by moder Unix terminals and Windows release 10 and newer +data Color = ANSIColor !ANSIColorIntensity !ANSIColorTone + | Color256 !Word8 + | ColorRGB !Word8 !Word8 !Word8 + deriving (Show, Eq) + +data ANSIColorIntensity = Light + | Dark + deriving (Show, Eq) + +data ANSIColorTone = Black + | Red + | Green + | Yellow + | Blue + | Magenta + | Cyan + | White + deriving (Show, Eq, Enum) + +data BlinkSpeed = SlowBlink + | FastBlink + deriving (Show, Eq) + +data WeightType = NormalWeight + | BoldWeight + | ThinWeight -- | Not widely supported: sometimes treated as concealing text + deriving (Show, Eq) + +data UnderlineType = SingleUnderline + | DoubleUnderline + deriving (Show, Eq) + +makeLenses ''Style + + +-- === Utils === -- + +resetSGR :: MonadIO m => Handle -> m () +resetSGR h = liftIO $ ANSI.hSetSGR h [ANSI.Reset] + +getStyleAsChanges :: State.Getter Style m => m [StyleChange] +getStyleAsChanges = styleToChanges <$> State.get @Style + +styleToChanges :: Style -> [StyleChange] +styleToChanges = diffStyles def + +getReversedStyleChange :: State.Getter Style m => StyleChange -> m StyleChange +getReversedStyleChange change = do + s <- State.get @Style + return $ case change of + WeightChange _ -> WeightChange $ s ^. weightStyle + ItalicChange _ -> ItalicChange $ s ^. italicStyle + UnderlineChange _ -> UnderlineChange $ s ^. underlineStyle + BlinkingChange _ -> BlinkingChange $ s ^. blinkingStyle + SwappedChange _ -> SwappedChange $ s ^. swappedStyle + FgColorChange _ -> FgColorChange $ s ^. fgColorStyle + BgColorChange _ -> BgColorChange $ s ^. bgColorStyle + + +putStyleChange :: State.Monad Style m => StyleChange -> m () +putStyleChange ch = State.modify_ @Style $ case ch of + WeightChange a -> weightStyle .~ a + ItalicChange a -> italicStyle .~ a + UnderlineChange a -> underlineStyle .~ a + BlinkingChange a -> blinkingStyle .~ a + SwappedChange a -> swappedStyle .~ a + FgColorChange a -> fgColorStyle .~ a + BgColorChange a -> bgColorStyle .~ a + +withStyleChanges :: (State.Monad Style m, MonadIO m) => Handle -> [StyleChange] -> m a -> m a +withStyleChanges h changes m = do + reverseChanges <- mapM getReversedStyleChange changes + hSetStyleChanges h changes + out <- m + hSetStyleChanges h reverseChanges + return out + + +diffStyles :: Style -> Style -> [StyleChange] +diffStyles s s' = weightDiff . italicDiff . underlineDiff . blinkingDiff . swappedDiff . fgColorDiff . bgColorDiff $ mempty where + weightDiff = if s ^. weightStyle == s' ^. weightStyle then id else (WeightChange (s' ^. weightStyle) :) + italicDiff = if s ^. italicStyle == s' ^. italicStyle then id else (ItalicChange (s' ^. italicStyle) :) + underlineDiff = if s ^. underlineStyle == s' ^. underlineStyle then id else (UnderlineChange (s' ^. underlineStyle) :) + blinkingDiff = if s ^. blinkingStyle == s' ^. blinkingStyle then id else (BlinkingChange (s' ^. blinkingStyle) :) + swappedDiff = if s ^. swappedStyle == s' ^. swappedStyle then id else (SwappedChange (s' ^. swappedStyle) :) + fgColorDiff = if s ^. fgColorStyle == s' ^. fgColorStyle then id else (FgColorChange (s' ^. fgColorStyle) :) + bgColorDiff = if s ^. bgColorStyle == s' ^. bgColorStyle then id else (BgColorChange (s' ^. bgColorStyle) :) + + +hSetStyleChanges :: (State.Monad Style m, MonadIO m) => Handle -> [StyleChange] -> m () +hSetStyleChanges h changes = do + let colorReser = (FgColorChange Nothing `elem` changes) || (BgColorChange Nothing `elem` changes) + mapM putStyleChange changes + newStyle <- State.get @Style + changes' <- if colorReser then resetSGR h >> getStyleAsChanges + else return changes + liftIO $ mapM_ apply changes' + where setSGR = ANSI.hSetSGR h . pure + putCtrl seq = System.hPutStr h $ "\x1b[" <> intercalate ";" (show <$> seq) <> "m" + putFgCtrl = putCtrl . (38:) + putBgCtrl = putCtrl . (48:) + putFg256Ctrl = putFgCtrl . (5:) . pure + putBg256Ctrl = putBgCtrl . (5:) . pure + putFgTCCtrl r g b = putFgCtrl [2,r,g,b] + putBgTCCtrl r g b = putBgCtrl [2,r,g,b] + apply = \case + WeightChange w -> setSGR $ ANSI.SetConsoleIntensity (convert w) + ItalicChange b -> setSGR $ ANSI.SetItalicized b + UnderlineChange u -> setSGR . ANSI.SetUnderlining $ case u of + Nothing -> ANSI.NoUnderline + Just SingleUnderline -> ANSI.SingleUnderline + Just DoubleUnderline -> ANSI.DoubleUnderline + BlinkingChange b -> setSGR . ANSI.SetBlinkSpeed $ case b of + Nothing -> ANSI.NoBlink + Just SlowBlink -> ANSI.SlowBlink + Just FastBlink -> ANSI.RapidBlink + SwappedChange b -> setSGR $ ANSI.SetSwapForegroundBackground b + FgColorChange c -> withJust c $ \case + ANSIColor i t -> setSGR $ ANSI.SetColor ANSI.Foreground (convert i) (convert t) + Color256 i -> putFg256Ctrl i + ColorRGB r g b -> putFgTCCtrl r g b + BgColorChange c -> withJust c $ \case + ANSIColor i t -> setSGR $ ANSI.SetColor ANSI.Background (convert i) (convert t) + Color256 i -> putFg256Ctrl i + ColorRGB r g b -> putBgTCCtrl r g b + + +-- === Instances === -- + +instance Default Style where + def = Style def False def def False def def + +instance Convertible ANSIColorIntensity ANSI.ColorIntensity where + convert = \case Light -> ANSI.Vivid + Dark -> ANSI.Dull + +instance Convertible ANSIColorTone ANSI.Color where + convert = toEnum . fromEnum + +instance Convertible WeightType ANSI.ConsoleIntensity where + convert = \case + NormalWeight -> ANSI.NormalIntensity + BoldWeight -> ANSI.BoldIntensity + ThinWeight -> ANSI.FaintIntensity + +instance Default WeightType where def = NormalWeight + + + +---------------------- +-- === TermText === -- +---------------------- + +-- === Definition === -- + +data TermText = TermText { _ttlength :: !Word64 + , _rootSegment :: !TermTextSegment + } + +data TermTextSegment = NullSegment + | PlainSegment !Text + | StyledSegment ![StyleChange] !TermText + | CatSegments !TermText !TermText + +makeLenses ''TermText + + +-- === Construction === -- + +plain :: Text -> TermText +plain t = TermText (convert $ Text.length t) (PlainSegment t) + + +-- === Modification === -- + +length :: TermText -> Word64 +length = view ttlength + +-- FIXME[WD]!!! +take :: Word64 -> TermText -> TermText +take _ = id + + +-- === Outputting === -- + +hPutStr, hPutStrLn :: MonadIO m => Handle -> TermText -> m () +hPutStr h t = liftIO $ State.evalDefT @Style $ hRenderStr h t +hPutStrLn h t = liftIO $ hPutStr h t >> System.hPutChar h '\n' + +putStr, putStrLn :: MonadIO m => TermText -> m () +putStr = hPutStr stdout +putStrLn = hPutStrLn stdout + +hRenderStr :: (MonadIO m, State.Monad Style m) => Handle -> TermText -> m () +hRenderStr h txt = case txt ^. rootSegment of + NullSegment -> return () + PlainSegment t -> liftIO $ Text.hPutStr h t + StyledSegment s t -> withStyleChanges h s $ hRenderStr h t + CatSegments l r -> hRenderStr h l >> hRenderStr h r + + +-- === Smart styles management === -- + +class Stylable a where + cleanStyles :: a -> a + withStyle :: [StyleChange] -> a -> a + + default cleanStyles :: (a ~ f a', Stylable a', Functor f) => a -> a + default withStyle :: (a ~ f a', Stylable a', Functor f) => [StyleChange] -> a -> a + cleanStyles = fmap cleanStyles + withStyle = fmap . withStyle + +instance Stylable TermText where + cleanStyles (TermText l s) = go s where + go = \case StyledSegment _ t -> cleanStyles t + CatSegments a b -> TermText l $ CatSegments (cleanStyles a) (cleanStyles b) + t -> TermText l t + + withStyle changes t = TermText (length t) $ StyledSegment changes t + +styled :: Stylable a => [StyleChange] -> a -> a +styled s = withStyle s . cleanStyles + +normal, bold, thin :: StyleChange +normal = WeightChange NormalWeight +bold = WeightChange BoldWeight +thin = WeightChange ThinWeight + +italic, notItalic :: StyleChange +italic = ItalicChange True +notItalic = ItalicChange False + +underline, doubleUnderline, noUnderline :: StyleChange +underline = UnderlineChange $ Just SingleUnderline +doubleUnderline = UnderlineChange $ Just DoubleUnderline +noUnderline = UnderlineChange Nothing + +blinking, blinkingFast, notBlinking :: StyleChange +blinking = BlinkingChange $ Just SlowBlink +blinkingFast = BlinkingChange $ Just FastBlink +notBlinking = BlinkingChange Nothing + +swapped, notSwapped :: StyleChange +swapped = SwappedChange True +notSwapped = SwappedChange False + +fg, bg :: Maybe Color -> StyleChange +fg = FgColorChange +bg = BgColorChange + + +-- Ansi color constructors + +dark, light :: ANSIColorTone -> Maybe Color +dark = Just . ANSIColor Dark +light = Just . ANSIColor Light + +black, red, green, yellow, blue, magenta, cyan, white :: ANSIColorTone +black = Black +red = Red +green = Green +yellow = Yellow +blue = Blue +magenta = Magenta +cyan = Cyan +white = White + + +-- 256 color constructors + +_256 :: Word8 -> Maybe Color +_256 = Just . Color256 + +-- truecolor constructors + +rgb :: Word8 -> Word8 -> Word8 -> Maybe Color +rgb r g b = Just $ ColorRGB r g b + + +-- === Instances === -- + +-- Show +instance Show TermText where show = show . convertTo @Text +deriving instance Show TermTextSegment + +-- Monoid +instance Mempty TermText where mempty = TermText 0 NullSegment +instance Semigroup TermText where + TermText _ NullSegment <> a = a + a <> TermText _ NullSegment = a + a <> b = TermText (length a + length b) $ CatSegments a b + +-- Converts +instance IsString TermText where fromString = convert +instance Convertible String TermText where convert = convertVia @Text +instance Convertible TermText String where convert = convertVia @Text +instance Convertible Text TermText where convert = plain +instance Convertible TermText Text where + convert = convert . go where + go :: TermText -> Text.Builder + go t = case t ^. rootSegment of + NullSegment -> mempty + PlainSegment t -> convert t + StyledSegment _ t -> go t + CatSegments l r -> go l <> go r + +-- Container +type instance Item TermText = Char diff --git a/terminal-text.cabal b/terminal-text.cabal new file mode 100644 --- /dev/null +++ b/terminal-text.cabal @@ -0,0 +1,38 @@ +-- This file has been generated from package.yaml by hpack version 0.20.0. +-- +-- see: https://github.com/sol/hpack +-- +-- hash: bb7978208e15e0aa79ec9fdb3bf0ab186b2850b4bba4339cee8f5dc24a81826a + +name: terminal-text +version: 1.1.1 +synopsis: Text data type for styled terminal output, including all standard ANSI effects (bold, italic, blinking) and ANSI / 256 / truecolor colors support for Unix and Windows (whenever possible). +category: Data +stability: experimental +homepage: https://github.com/luna/terminal-text +bug-reports: https://github.com/luna/terminal-text/issues +author: Luna Team +maintainer: Wojciech Danilo +copyright: Copyright (C) 2018 Luna Team +license: Apache-2.0 +license-file: LICENSE +build-type: Simple +cabal-version: >= 1.10 + +library + hs-source-dirs: + src + default-extensions: AllowAmbiguousTypes ApplicativeDo BangPatterns BinaryLiterals ConstraintKinds DataKinds DefaultSignatures DeriveDataTypeable DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable DoAndIfThenElse DuplicateRecordFields EmptyDataDecls FlexibleContexts FlexibleInstances FunctionalDependencies GeneralizedNewtypeDeriving InstanceSigs LambdaCase MonadComprehensions MultiWayIf NamedWildCards NegativeLiterals NoImplicitPrelude NumDecimals OverloadedLabels PackageImports QuasiQuotes PatternSynonyms RankNTypes RecursiveDo ScopedTypeVariables StandaloneDeriving TemplateHaskell TupleSections TypeApplications TypeFamilies TypeFamilyDependencies TypeOperators UnicodeSyntax ViewPatterns LiberalTypeSynonyms RelaxedPolyRec + ghc-options: -Wall -O2 + build-depends: + ansi-terminal + , base >=4.10 && <4.12 + , container + , layered-state + , prologue + , text + exposed-modules: + Data.Text.Terminal + other-modules: + Paths_terminal_text + default-language: Haskell2010