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Merge pull request #27 from psibi/split
Split library and fix multiple line bug
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,234 +1,6 @@ | ||
| {-# LANGUAGE ScopedTypeVariables #-} | ||
| {-# LANGUAGE RecordWildCards #-} | ||
| {-# LANGUAGE BangPatterns #-} | ||
| module Main where | ||
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| module Main | ||
| ( main | ||
| ) where | ||
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| import Control.Monad | ||
| import Data.List (intercalate) | ||
| import Data.Semigroup ((<>)) | ||
| import qualified Data.Set as Set | ||
| import Data.Version (showVersion) | ||
| import System.IO (stdout, stderr, hPutStrLn) | ||
| import Options.Applicative | ||
| import Paths_tldr (version) | ||
| import System.Directory | ||
| import System.Environment (getArgs, getExecutablePath, lookupEnv) | ||
| import System.Exit (exitFailure) | ||
| import System.FilePath | ||
| import System.Process.Typed | ||
| import Data.Char (toLower) | ||
| import Tldr | ||
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| data TldrOpts = TldrOpts | ||
| { tldrAction :: TldrCommand | ||
| } deriving (Show) | ||
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| data TldrCommand | ||
| = UpdateIndex | ||
| | ViewPage ViewOptions | ||
| [String] | ||
| | About | ||
| deriving (Show, Eq, Ord) | ||
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| data ViewOptions = | ||
| ViewOptions | ||
| { platformOption :: Maybe String | ||
| , languageOption :: Maybe String | ||
| } | ||
| deriving (Show, Eq, Ord) | ||
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| englishViewOptions :: ViewOptions -> ViewOptions | ||
| englishViewOptions xs = xs { languageOption = Just "en_US.utf8" } | ||
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| programOptions :: Parser TldrOpts | ||
| programOptions = | ||
| (TldrOpts <$> (updateIndexCommand <|> viewPageCommand <|> aboutFlag)) | ||
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| updateIndexCommand :: Parser TldrCommand | ||
| updateIndexCommand = | ||
| flag' | ||
| UpdateIndex | ||
| (long "update" <> short 'u' <> help "Update offline cache of tldr pages") | ||
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| aboutFlag :: Parser TldrCommand | ||
| aboutFlag = flag' About (long "about" <> short 'a' <> help "About this program") | ||
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| viewOptionsParser :: Parser ViewOptions | ||
| viewOptionsParser = ViewOptions <$> platformFlag <*> languageFlag | ||
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| viewPageCommand :: Parser TldrCommand | ||
| viewPageCommand = | ||
| ViewPage <$> viewOptionsParser <*> | ||
| some (strArgument (metavar "COMMAND" <> help "name of the command")) | ||
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| platformFlag :: Parser (Maybe String) | ||
| platformFlag = | ||
| optional | ||
| (strOption | ||
| (long "platform" <> short 'p' <> metavar "PLATFORM" <> | ||
| help | ||
| ("Prioritize specfic platform while searching. Valid values include " <> | ||
| platformHelpValue))) | ||
| where | ||
| platformHelpValue :: String | ||
| platformHelpValue = intercalate ", " platformDirs | ||
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| languageFlag :: Parser (Maybe String) | ||
| languageFlag = | ||
| optional | ||
| (strOption | ||
| (long "language" <> short 'L' <> metavar "LOCALE" <> | ||
| help | ||
| ("Preferred language for the page returned"))) | ||
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| tldrDirName :: String | ||
| tldrDirName = "tldr" | ||
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| repoHttpsUrl :: String | ||
| repoHttpsUrl = "https://github.com/tldr-pages/tldr.git" | ||
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| checkDirs :: [String] | ||
| checkDirs = "common" : platformDirs | ||
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| platformDirs :: [String] | ||
| platformDirs = ["linux", "osx", "windows", "sunos"] | ||
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| tldrInitialized :: IO Bool | ||
| tldrInitialized = do | ||
| dataDir <- getXdgDirectory XdgData tldrDirName | ||
| let dir2 = dataDir </> "tldr" | ||
| pages = dataDir </> "tldr" </> "pages" | ||
| exists <- mapM doesDirectoryExist [dataDir, dir2, pages] | ||
| return $ all (== True) exists | ||
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| initializeTldrPages :: IO () | ||
| initializeTldrPages = do | ||
| initialized <- tldrInitialized | ||
| unless initialized $ do | ||
| dataDir <- getXdgDirectory XdgData tldrDirName | ||
| createDirectoryIfMissing False dataDir | ||
| runProcess_ $ setWorkingDir dataDir $ proc "git" ["clone", repoHttpsUrl] | ||
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| updateTldrPages :: IO () | ||
| updateTldrPages = do | ||
| dataDir <- getXdgDirectory XdgData tldrDirName | ||
| let repoDir = dataDir </> "tldr" | ||
| repoExists <- doesDirectoryExist repoDir | ||
| case repoExists of | ||
| True -> | ||
| runProcess_ $ | ||
| setWorkingDir (repoDir) $ proc "git" ["pull", "origin", "master"] | ||
| False -> initializeTldrPages | ||
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| tldrParserInfo :: ParserInfo TldrOpts | ||
| tldrParserInfo = | ||
| info | ||
| (helper <*> versionOption <*> programOptions) | ||
| (fullDesc <> progDesc "tldr Client program" <> | ||
| header "tldr - Simplified and community-driven man pages") | ||
| where | ||
| versionOption :: Parser (a -> a) | ||
| versionOption = | ||
| infoOption | ||
| (showVersion version) | ||
| (long "version" <> short 'v' <> help "Show version") | ||
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| pageExists :: FilePath -> IO (Maybe FilePath) | ||
| pageExists fname = do | ||
| exists <- doesFileExist fname | ||
| if exists | ||
| then return $ Just fname | ||
| else return Nothing | ||
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| getPagePath :: Locale -> String -> [String] -> IO (Maybe FilePath) | ||
| getPagePath locale page platformDirs = do | ||
| dataDir <- getXdgDirectory XdgData tldrDirName | ||
| let currentLocale = case locale of | ||
| English -> "pages" | ||
| Other xs -> "pages." <> xs | ||
| Unknown xs -> "pages." <> xs | ||
| Missing -> "pages" | ||
| pageDir = dataDir </> "tldr" </> currentLocale | ||
| paths = map (\x -> pageDir </> x </> page <.> "md") platformDirs | ||
| foldr1 (<|>) <$> mapM pageExists paths | ||
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| getCheckDirs :: ViewOptions -> [String] | ||
| getCheckDirs voptions = | ||
| case platformOption voptions of | ||
| Nothing -> checkDirs | ||
| Just platform -> nubOrd $ ["common", platform] <> checkDirs | ||
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| -- | Strip out duplicates | ||
| nubOrd :: Ord a => [a] -> [a] | ||
| nubOrd = loop mempty | ||
| where | ||
| loop _ [] = [] | ||
| loop !s (a:as) | ||
| | a `Set.member` s = loop s as | ||
| | otherwise = a : loop (Set.insert a s) as | ||
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| handleAboutFlag :: IO () | ||
| handleAboutFlag = do | ||
| path <- getExecutablePath | ||
| let content = | ||
| unlines | ||
| [ path <> " v" <> (showVersion version) | ||
| , "Copyright (C) 2017 Sibi Prabakaran" | ||
| , "Source available at https://github.com/psibi/tldr-hs" | ||
| ] | ||
| putStr content | ||
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| handleTldrOpts :: TldrOpts -> IO () | ||
| handleTldrOpts opts@TldrOpts {..} = do | ||
| case tldrAction of | ||
| UpdateIndex -> updateTldrPages | ||
| About -> handleAboutFlag | ||
| vopts@(ViewPage voptions pages) -> do | ||
| let npage = intercalate "-" pages | ||
| locale <- | ||
| case (languageOption voptions) of | ||
| Nothing -> retriveLocale | ||
| Just lg -> pure $ computeLocale (Just lg) | ||
| fname <- getPagePath locale npage (getCheckDirs voptions) | ||
| case fname of | ||
| Just path -> renderPage path stdout | ||
| Nothing -> do | ||
| if checkLocale locale | ||
| then do | ||
| hPutStrLn stderr ("No tldr entry for " <> (intercalate " " pages)) | ||
| exitFailure | ||
| else handleTldrOpts | ||
| (opts | ||
| { tldrAction = | ||
| ViewPage (englishViewOptions voptions) pages | ||
| }) | ||
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| checkLocale :: Locale -> Bool | ||
| checkLocale English = True | ||
| checkLocale _ = False | ||
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| data Locale = English | Missing | Other String | Unknown String | ||
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| retriveLocale :: IO Locale | ||
| retriveLocale = do | ||
| lang <- lookupEnv "LANG" | ||
| pure $ computeLocale lang | ||
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| computeLocale :: Maybe String -> Locale | ||
| computeLocale lang = case map toLower <$> lang of | ||
| Nothing -> Missing | ||
| Just ('e':'n':_) -> English | ||
| Just (a:b:'_':_) -> Other (a:b:[]) | ||
| Just (a:b:c:'_':_) -> Other (a:b:c:[]) | ||
| Just str -> Unknown str | ||
| import Tldr.App (appMain) | ||
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| main :: IO () | ||
| main = do | ||
| args <- getArgs | ||
| case execParserPure (prefs showHelpOnEmpty) tldrParserInfo args of | ||
| failOpts@(Failure _) -> handleParseResult failOpts >> return () | ||
| Success opts -> handleTldrOpts opts | ||
| compOpts@(CompletionInvoked _) -> handleParseResult compOpts >> return () | ||
| main = appMain |
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