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If not, see . + +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: + + Copyright (C) + 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 +. + + 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 +. + 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/black-jewel.cabal b/black-jewel.cabal new file mode 100644 --- /dev/null +++ b/black-jewel.cabal @@ -0,0 +1,61 @@ +Name: black-jewel +Version: 0.0.0.1 +Synopsis: The pirate bay client. +Description: Interactive torrent search utility. It support following commands: + . + 'find' -- execute search + . + 'more' -- find more results. + . + 'list' -- display found results. + . + 'show' -- display meta-information via your pager. + . + 'save' -- save corresponding .torrent file in current directory. + . + Parsing torrent takes time, so program use lazy IO to not waste user's time. + Here is need for 'more' command. +License: GPL-3 +license-file: LICENSE +Homepage: http://git.kaction.name/black-jewel +category: Application +Author: Dmitry Bogatov +Maintainer: KAction@gnu.org +Cabal-Version: >= 1.10 +Build-Type: Simple + +source-repository head + type: git + location: git://kaction.name/black-jewel.git + + +Executable black-jewel + Hs-Source-Dirs: src + default-language: Haskell2010 + Main-is: Main.hs + other-modules: Utils PirateBay Quarry + Build-Depends: base >= 4 && < 5, + bytestring >= 0.9, + HTTP >= 4000.1.2, + tagsoup >= 0.12.6, + bytestring >= 0.9, + network >= 2.3, + directory >= 1.1, + download >= 0.3, + hxt >= 9.3, + transformers >= 0.3, + haskeline >= 0.7, + safe >= 0.3, + ansi-terminal >= 0.6, + process >= 1.1.0, + zlib >= 0.5 + ghc-options: -Wall + default-extensions: FlexibleInstances + +Test-Suite dummy + type: exitcode-stdio-1.0 + main-is: tDummy.hs + default-language: Haskell2010 + hs-source-dirs: tests + build-depends: base, + QuickCheck >= 2.6 diff --git a/src/Main.hs b/src/Main.hs new file mode 100644 --- /dev/null +++ b/src/Main.hs @@ -0,0 +1,152 @@ +module Main where +import System.Console.Haskeline +import Control.Monad.IO.Class +import Control.Monad.Trans.State.Lazy(StateT, runStateT, evalStateT, get, put) +import Control.Monad.Trans.Class(lift) +import Control.Applicative((<$>)) +import Control.Monad(mzero, when) +import Control.Monad.Trans.Maybe(MaybeT, runMaybeT) +import Data.Maybe(catMaybes) +import Data.Char(isSpace) +import Safe (readMay) +import Data.ByteString(hPut) +import System.IO(withFile, IOMode(WriteMode)) +import Text.Printf(printf) +import PirateBay +import Quarry +import Utils + +data InteractionState = InteractionState { + usePager :: Bool, + lastQuery :: Maybe String, + results :: [Quarry], + lazyResults :: [IO (Maybe Quarry)], + displayedResults :: [Quarry], + searchState :: Maybe String, + lastIndex :: Maybe Int, + sortOpt :: SortingOption, + seqStep :: Int +} + +initalInteractionState :: InteractionState +initalInteractionState = InteractionState { + usePager = True, + lastQuery = mzero, + results = mzero, + seqStep = 4, + lazyResults = mzero, + displayedResults = [], + searchState = Nothing, + lastIndex = Nothing, + sortOpt = (Seed, Descending) + } + +settings :: MonadIO m => Settings m +settings = defaultSettings { autoAddHistory = True } + +main :: IO () +main = runInputT settings $ evalStateT mainLoop initalInteractionState where + mainLoop :: StateT InteractionState (InputT IO) () + mainLoop = lift (getInputLine ">>= ") >>= \input -> case input of + Nothing -> return () + Just line -> evaluateCommand line >> mainLoop + +evaluateCommand :: String -> StateT InteractionState (InputT IO) () +evaluateCommand str' = let str = dropWhile isSpace str' + command = takeWhile (not . isSpace) str + rest = strip $ dropWhile (not . isSpace) str in + case command of + "find" -> find_evaluateCommand rest + "list" -> list_evaluateCommand + "more" -> more_evaluateCommand rest + "show" -> show_evaluateCommand rest + "save" -> save_evaluateCommand rest + _ -> lift $ outputStrLn ("Unknown command: " ++ command) + +withValidIndex :: (Int -> StateT InteractionState (InputT IO) ()) + -> String + -> StateT InteractionState (InputT IO) () +withValidIndex fn str = case readMay str of + Nothing -> lift . outputStrLn $ "Invalid or missing argument." + Just index -> do + results' <- results <$> get + if index > length results' + then lift . outputStrLn $ "Index too big. Try `more' first." + else if index <= 0 + then lift . outputStrLn $ "Index assumed to be positive." + else fn (index - 1) + + +save_evaluateCommand :: String -> StateT InteractionState (InputT IO) () +save_evaluateCommand = withValidIndex save_evaluateCommand' where + save_evaluateCommand' :: Int -> StateT InteractionState (InputT IO) () + save_evaluateCommand' index = do + results' <- results <$> get + let hash = (magnetHash . retrive) (results' !! index) + torrent <- lift2 $ runMaybeT (fetchTorrentFile hash) + case torrent of + Nothing -> lift . outputStrLn $ "Failed to fetch torrent file." + Just torrent' -> lift2 $ withFile (printf "./%s.torrent" hash) WriteMode (`hPut` torrent') + + + +find_evaluateCommand :: String -> StateT InteractionState (InputT IO) () +find_evaluateCommand query = do + state <- get + (uneval', search_state) <- lift2 $ runStateT (search query (sortOpt state)) Nothing + let uneval = map runMaybeT uneval' + results' <- catMaybes <$> (lift2 . sequence $ take (seqStep state) uneval) + put state { + lastQuery = Just query, + lazyResults = drop (seqStep state) uneval, + results = results', + searchState = search_state + } + list_evaluateCommand + +list_evaluateCommand :: StateT InteractionState (InputT IO) () +list_evaluateCommand = get >>= lift2 . termOutput . results + + + +show_evaluateCommand :: String -> StateT InteractionState (InputT IO) () +show_evaluateCommand = withValidIndex show_evaluateCommand' where + show_evaluateCommand' :: Int -> StateT InteractionState (InputT IO) () + show_evaluateCommand' index = do + q <- ( !! index) . results <$> get + lift2 . termOutput $ q + lift2 . invokePager . meta $ q + + +more_evaluateCommand :: String -> StateT InteractionState (InputT IO) () +more_evaluateCommand "" = get >>= more_evaluateCommand' . seqStep +more_evaluateCommand str = lastQuery <$> get >>= + \query -> case query of + Nothing -> lift . outputStrLn $ "No search performed." + Just _ -> case readMay str of + Nothing -> lift . outputStrLn $ "Failed to read Int from: " ++ str + Just val -> if val > 0 + then more_evaluateCommand' val + else lift . outputStrLn $ "Argument expected to be positive." + +more_evaluateCommand' :: Int -> StateT InteractionState (InputT IO) () +more_evaluateCommand' n = do + state' <- get + when (null . lazyResults $ state') $ fetch_more (searchState state') + state <- get + moreResults <- catMaybes <$> (lift2 . sequence $ take n (lazyResults state')) + put state { results = results state ++ moreResults, lazyResults = drop n (lazyResults state)} + list_evaluateCommand + +fetch_more :: Maybe String -> StateT InteractionState (InputT IO) () +fetch_more Nothing = lift . outputStrLn $ "No more results availible." +fetch_more search_state = do + state <- get + (uneval', new_search_state) <- lift2 $ runStateT (search undefined undefined) search_state + let uneval = map runMaybeT uneval' + put state { searchState = new_search_state, lazyResults = uneval} + + + +-- show_evaluateCommand :: String -> StateT InteractionState (InputT IO) () +-- show_evaluateCommand "" = lift2 $ mapM_ (\arg -> diff --git a/src/PirateBay.hs b/src/PirateBay.hs new file mode 100644 --- /dev/null +++ b/src/PirateBay.hs @@ -0,0 +1,128 @@ +module PirateBay where +import Quarry +import Text.Printf(printf) +import Network.HTTP.Base (urlEncode) +import Text.XML.HXT.Core +import Network.Download (openURIString) +import Control.Applicative ((<$>)) +import Data.List(isPrefixOf) +import Control.Monad.Trans.Maybe(MaybeT, runMaybeT) +import Control.Monad.Trans.State.Lazy(StateT, get, put) +import Control.Monad.IO.Class (liftIO) +import Control.Monad.Trans.Class(lift) +import Control.Monad (guard, mzero, liftM2) +import Data.List(elemIndex) +import Data.Maybe(fromMaybe) +import Utils(strip) + +data SortingOrder = Descending | Ascending deriving (Show, Enum) + +data SortingKey = Name | Seed | Leech | Uploaded | Size +instance Enum SortingKey where + toEnum = undefined + fromEnum Name = 1 + fromEnum Uploaded = 3 + fromEnum Size = 5 + fromEnum Seed = 7 + fromEnum Leech = 9 +type SortingOption = (SortingKey, SortingOrder) +instance Enum SortingOption where + toEnum = undefined + fromEnum (key, order) = fromEnum key + fromEnum order + + +-- | Root piratebay url. +rootUrl :: String +rootUrl = "http://thepiratebay.sx" + +rootRelative :: String -> String +rootRelative link = rootUrl ++ link + +firstSearchResultPageUrl :: String -> SortingOption -> String +firstSearchResultPageUrl query opt = rootRelative $ printf "/search/%s/0/%d/0" + (urlEncode query) + (fromEnum opt) + +nextSearchResultPageUrl :: String -> MaybeT IO String +nextSearchResultPageUrl html = let + doc = readString [withParseHTML yes, withWarnings no] html + nextLink = runX $ doc //> hasName "a" + >>> (filterA . deep) (hasName "img" + >>> hasAttrValue "alt" (== "Next")) + >>> getAttrValue "href" in do + list <- lift nextLink + guard (not . null $ list) + return $ (rootRelative . head) list + +htmlFromUrl :: String -> MaybeT IO String +htmlFromUrl link = lift (openURIString link) >>= \res -> case res of + Left _ -> mzero + Right html -> lift $ return html + +torrentPageUrls :: String -> IO [String] +torrentPageUrls html = let + doc = readString [withParseHTML yes, withWarnings no] html + allLinks = runX $ doc //> hasName "a" >>> getAttrValue "href" in +-- (allLinks >>= mapM_ print) >> + map rootRelative . filter (isPrefixOf "/torrent") <$> allLinks + + + +catResult :: [String] -> String +catResult [] = "" +catResult arg = (strip . head) arg + +parseTorrentPage :: String -> MaybeT IO Quarry +parseTorrentPage html = do + let doc = readString [withParseHTML yes, withWarnings no] html + title' <- lift $ catResult <$> runX (doc //> hasAttrValue "id" (=="title") + >>> deep getText) + + magnetLink' <- lift $ catResult <$> runX (doc + //> hasName "a" + >>> hasAttrValue "title" (== "Get this torrent") + >>> getAttrValue "href") + guard (magnetLink' /= "") + stats' <- lift $ runX $ doc //> hasName "dl" >>> deep getText >>> filterA (isA (not . null . strip)) + let fetchParameter str = maybe "-1" ((stats' !!) . (1+)) (elemIndex str stats') + + info <- lift $ runX $ doc //> hasAttrValue "class" (== "nfo") + >>> deep getText + + let meta' = concatMap strip info + + return Quarry { + seed = read $ fetchParameter "Seeders:", + leech = read $ fetchParameter "Leechers:", + retrive = MagnetLinkURL { + magnetLink = magnetLink', + magnetHash = strip $ fetchParameter "Info Hash:" + }, + uploaded = strip $ fetchParameter "Uploaded:", + size = fetchParameter "Size:", + meta = meta', + title = title', + files = read $ fetchParameter "Files:" + } + +appendM :: MaybeT IO [a] -> MaybeT IO [a] -> MaybeT IO [a] +appendM = liftM2 (++) + +iterateSearch :: String -> IO [MaybeT IO Quarry] +iterateSearch html = map parseLink <$> torrentPageUrls html + +-- | Here is simplification: I use fromJust +parseLink :: String -> MaybeT IO Quarry +parseLink link = htmlFromUrl link >>= parseTorrentPage + + +evalSearchAndChangeState :: String -> StateT (Maybe String) IO [MaybeT IO Quarry] +evalSearchAndChangeState link = liftIO (runMaybeT (htmlFromUrl link)) >>= \html' -> case html' of + Nothing -> put Nothing >> return [] + Just html -> liftIO (runMaybeT $ nextSearchResultPageUrl html) >>= put + >> liftIO (iterateSearch html) + + +search :: String -> SortingOption -> StateT (Maybe String) IO [MaybeT IO Quarry] +search query opt = get >>= \st -> evalSearchAndChangeState $ + fromMaybe (firstSearchResultPageUrl query opt) st diff --git a/src/Quarry.hs b/src/Quarry.hs new file mode 100644 --- /dev/null +++ b/src/Quarry.hs @@ -0,0 +1,49 @@ +module Quarry where +import Text.Printf +import System.Console.ANSI +import Control.Monad(forM_) + +data RetriveData = MagnetLinkURL { magnetLink :: String, magnetHash :: String } deriving (Show) + + + +data Quarry = Quarry { + seed :: Int, + leech :: Int, + retrive :: RetriveData, + uploaded :: String, + size :: String, + files :: Int, + meta :: String, + title :: String +} +instance Show Quarry where + show q = printf "%-30s (%d/%d) uploaded %s" (take 30 $ title q) (seed q) (leech q) (uploaded q) + +class Show a => TerminalOutput a where + termOutput :: a -> IO () + +instance TerminalOutput Quarry where + termOutput q = do + setSGR [SetColor Foreground Vivid Magenta, SetConsoleIntensity BoldIntensity] + printf " %-50s " $ take 50 (title q) :: IO () + + setSGR [Reset, SetConsoleIntensity BoldIntensity] >> printf " %s " (uploaded q) :: IO () + + setSGR [] >> printf " [" :: IO () + setSGR [SetColor Foreground Vivid Green] >> printf "%d" (seed q) :: IO () + setSGR [] >> printf "/" ::IO () + setSGR [SetColor Foreground Dull Red] >> printf "%d" (leech q) :: IO () + setSGR [] >> printf "]" :: IO () + + setSGR [] >> printf "\n" :: IO () + + +instance TerminalOutput [Quarry] where + termOutput list = forM_ (zip list [1..]) outputLine where + outputLine :: (Quarry, Int) -> IO () + outputLine (q, n) = do + setSGR [SetConsoleIntensity BoldIntensity, + SetColor Foreground Dull Cyan] + printf "%-3d" n :: IO () + termOutput q diff --git a/src/Utils.hs b/src/Utils.hs new file mode 100644 --- /dev/null +++ b/src/Utils.hs @@ -0,0 +1,48 @@ +module Utils where +import Data.Char(isSpace) +import Control.Monad.Trans.Class(lift, MonadTrans) +import Control.Monad(mzero) +import Network.Download (openURI) +import System.Environment(getEnv) +import System.Process +import qualified Data.ByteString as B +import qualified Data.ByteString.Lazy as BL +import Control.Monad.Trans.Maybe +import Codec.Compression.GZip(decompress) +import Text.Printf(printf) +import System.IO (hPutStrLn) + +-- | Strip whitespace from beginning and end of string. +strip :: String -> String +strip = lstripAndReverse . lstripAndReverse where + lstripAndReverse = reverse . lstrip where + lstrip = dropWhile isSpace + +lift2 :: (Monad (t1 m), Monad m, MonadTrans t, MonadTrans t1) => + m a -> t (t1 m) a +lift2 = lift . lift + + +invokePager :: String -> IO () +invokePager text = do + pager <- getEnv "PAGER" + (Just stdin,_,_,_) <- createProcess CreateProcess { + cmdspec = ShellCommand pager, + cwd = Nothing, + env = Nothing, + std_in = CreatePipe, + std_out = Inherit, + std_err = Inherit, + close_fds = False, + create_group = False + } + hPutStrLn stdin text + +type Hash = String + +fetchTorrentFile :: Hash -> MaybeT IO B.ByteString +fetchTorrentFile hash = lift (openURI $ printf "http://torrage.com/torrent/%s.torrent" hash) >>= + \res' -> case res' of + Left _ -> mzero + Right bs -> let lazy_bs = BL.fromChunks [bs] in + return . BL.toStrict $ decompress lazy_bs diff --git a/tests/tDummy.hs b/tests/tDummy.hs new file mode 100644 --- /dev/null +++ b/tests/tDummy.hs @@ -0,0 +1,17 @@ +import Test.QuickCheck +import Text.Printf(printf) + +testSuiteSize :: Int +testSuiteSize = 1000 + +myArgs :: Args +myArgs = stdArgs {maxSize = testSuiteSize, maxSuccess = testSuiteSize} + +quickCheck' :: (Testable p) => String -> p -> IO () +quickCheck' desc prop = printf "%-25s" desc >> quickCheckWith myArgs prop + + +main :: IO () +main = + quickCheck' "Trivial test." ((\s -> s == s) :: String -> Bool) >> + quickCheck' "Sin boundness."((\x -> (abs . sin $ x) < 0.999) :: Double -> Bool)