-import Codec.Binary.Base64
-import Codec.Compression.GZip
-import Control.Monad
-import Data.Bits
-import qualified Data.ByteString.Lazy as Lazy (ByteString)
-import qualified Data.ByteString.Lazy as L hiding (ByteString)
-import Data.Char
-import Data.Digest.SHA2
-import Data.Int
-import Data.Maybe
-import Data.Time
-import Data.Time.Clock.POSIX
-import Data.Word
-import Language.Haskell.Pretty
-import Language.Haskell.Syntax
-import Network.HTTP.Lucu.MIMEType
-import Network.HTTP.Lucu.MIMEType.DefaultExtensionMap
-import Network.HTTP.Lucu.MIMEType.Guess
-import System.Console.GetOpt
-import System.Environment
-import System.Exit
-import System.Posix.Files
-import System.IO
+{-# LANGUAGE
+ OverloadedStrings
+ , UnicodeSyntax
+ #-}
+module Main where
+import Codec.Compression.GZip
+import Control.Applicative
+import Control.Monad
+import qualified Data.Ascii as A
+import qualified Data.ByteString.Base64 as B64
+import qualified Data.ByteString.Char8 as Strict
+import qualified Data.ByteString.Lazy as Lazy
+import Data.Char
+import Data.Digest.Pure.SHA
+import Data.Int
+import Data.Maybe
+import Data.Time
+import Data.Time.Clock.POSIX
+import Language.Haskell.Exts.Build
+import Language.Haskell.Exts.Extension
+import Language.Haskell.Exts.Pretty
+import Language.Haskell.Exts.Syntax
+import Network.HTTP.Lucu.ETag
+import Network.HTTP.Lucu.MIMEType
+import Network.HTTP.Lucu.MIMEType.DefaultExtensionMap
+import Network.HTTP.Lucu.MIMEType.Guess
+import Prelude.Unicode
+import System.Console.GetOpt
+import System.Environment
+import System.Exit
+import System.Posix.Files
+import System.IO
data CmdOpt
= OptOutput FilePath
| OptHelp
deriving (Eq, Show)
-
-options :: [OptDescr CmdOpt]
-options = [ Option ['o'] ["output"]
+options ∷ [OptDescr CmdOpt]
+options = [ Option "o" ["output"]
(ReqArg OptOutput "FILE")
"Output to the FILE."
- , Option ['m'] ["module"]
+ , Option "m" ["module"]
(ReqArg OptModName "MODULE")
"Specify the resulting module name. (required)"
- , Option ['s'] ["symbol"]
+ , Option "s" ["symbol"]
(ReqArg OptSymName "SYMBOL")
"Specify the resulting symbol name."
- , Option ['t'] ["mime-type"]
+ , Option "t" ["mime-type"]
(ReqArg OptMIMEType "TYPE")
"Specify the MIME Type of the file."
- , Option ['e'] ["etag"]
+ , Option "e" ["etag"]
(ReqArg OptETag "TAG")
"Specify the ETag of the file."
- , Option ['h'] ["help"]
+ , Option "h" ["help"]
(NoArg OptHelp)
"Print this message."
]
-
-printUsage :: IO ()
-printUsage = do putStrLn ""
- putStrLn "Description:"
- putStrLn (" lucu-implant-file is an utility that generates " ++
- "Haskell code containing an arbitrary file to " ++
- "compile it directly into programs and serve it " ++
- "statically with the Lucu HTTP server.")
- putStrLn ""
- putStrLn "Usage:"
- putStrLn " lucu-implant-file [OPTIONS...] FILE"
- putStrLn ""
+printUsage ∷ IO ()
+printUsage = do mapM_ putStrLn msg
putStr $ usageInfo "Options:" options
putStrLn ""
-
-
-main :: IO ()
-main = do (opts, sources, errors) <- return . getOpt Permute options =<< getArgs
-
- when (not $ null errors)
- $ do mapM_ putStr errors
- exitWith $ ExitFailure 1
-
- when (any (\ x -> x == OptHelp) opts)
- $ do printUsage
- exitWith ExitSuccess
+ where
+ msg = [ ""
+ , "Description:"
+ , concat [ " lucu-implant-file is an utility that generates "
+ , "Haskell code containing an arbitrary file to "
+ , "compile it directly into programs and serve it "
+ , "statically with the Lucu HTTP server."
+ ]
+ , ""
+ , "Usage:"
+ , " lucu-implant-file [OPTIONS...] FILE"
+ , ""
+ ]
+
+main ∷ IO ()
+main = do (opts, sources, errors) ← getOpt Permute options <$> getArgs
+
+ unless (null errors)
+ $ do mapM_ putStr errors
+ exitWith $ ExitFailure 1
+
+ when (any (≡ OptHelp) opts)
+ $ do printUsage
+ exitWith ExitSuccess
when (null sources)
- $ do printUsage
- exitWith $ ExitFailure 1
+ $ do printUsage
+ exitWith $ ExitFailure 1
- when (length sources >= 2)
- $ error "too many input files."
+ when (length sources ≥ 2)
+ $ fail "too many input files."
generateHaskellSource opts (head sources)
-
-generateHaskellSource :: [CmdOpt] -> FilePath -> IO ()
+generateHaskellSource ∷ [CmdOpt] → FilePath → IO ()
generateHaskellSource opts srcFile
- = do modName <- getModuleName opts
- symName <- getSymbolName opts modName
- mimeType <- getMIMEType opts srcFile
- lastMod <- getLastModified srcFile
- input <- openInput srcFile
- output <- openOutput opts
- eTag <- getETag opts input
-
- let gzippedData = compressWith BestCompression input
- originalLen = L.length input
- gzippedLen = L.length gzippedData
+ = do modName ← getModuleName opts
+ symName ← getSymbolName opts modName
+ mType ← getMIMEType opts srcFile
+ lastMod ← getLastModified srcFile
+ input ← openInput srcFile
+ output ← openOutput opts
+ tag ← getETag opts input
+
+ let compParams = defaultCompressParams { compressLevel = bestCompression }
+ gzippedData = compressWith compParams input
+ originalLen = Lazy.length input
+ gzippedLen = Lazy.length gzippedData
useGZip = originalLen > gzippedLen
- rawB64 = encode $ L.unpack input
- gzippedB64 = encode $ L.unpack gzippedData
-
- header <- mkHeader srcFile originalLen gzippedLen useGZip mimeType eTag lastMod
-
- let hsModule = HsModule undefined (Module modName) (Just exports) imports decls
- exports = [HsEVar (UnQual (HsIdent symName))]
- imports = [ HsImportDecl undefined (Module "Codec.Binary.Base64")
- False Nothing Nothing
- , HsImportDecl undefined (Module "Data.ByteString.Lazy")
- True (Just (Module "L")) Nothing
- , HsImportDecl undefined (Module "Data.Time")
- False Nothing Nothing
- , HsImportDecl undefined (Module "Network.HTTP.Lucu")
- False Nothing Nothing
- ]
- ++
- (if useGZip then
- [ HsImportDecl undefined (Module "Control.Monad")
- False Nothing Nothing
- , HsImportDecl undefined (Module "Codec.Compression.GZip")
- False Nothing Nothing
- ]
- else
- [])
- decls = declResourceDef
- ++
- declEntityTag
- ++
- declLastModified
- ++
- declContentType
- ++
- (if useGZip
- then declGZippedData
- else declRawData)
-
- declResourceDef :: [HsDecl]
- declResourceDef
- = [ HsTypeSig undefined [HsIdent symName]
- (HsQualType []
- (HsTyCon (UnQual (HsIdent "ResourceDef"))))
- , HsFunBind [HsMatch undefined (HsIdent symName)
- [] (HsUnGuardedRhs defResourceDef) []]
- ]
-
- defResourceDef :: HsExp
- defResourceDef
- = let defResGet = if useGZip
- then defResGetGZipped
- else defResGetRaw
- in
- (HsRecConstr (UnQual (HsIdent "ResourceDef"))
- [ HsFieldUpdate (UnQual (HsIdent "resUsesNativeThread"))
- (HsCon (UnQual (HsIdent "False")))
- , HsFieldUpdate (UnQual (HsIdent "resIsGreedy"))
- (HsCon (UnQual (HsIdent "False")))
- , HsFieldUpdate (UnQual (HsIdent "resGet")) defResGet
- , HsFieldUpdate (UnQual (HsIdent "resHead"))
- (HsCon (UnQual (HsIdent "Nothing")))
- , HsFieldUpdate (UnQual (HsIdent "resPost"))
- (HsCon (UnQual (HsIdent "Nothing")))
- , HsFieldUpdate (UnQual (HsIdent "resPut"))
- (HsCon (UnQual (HsIdent "Nothing")))
- , HsFieldUpdate (UnQual (HsIdent "resDelete"))
- (HsCon (UnQual (HsIdent "Nothing")))
- ]
- )
-
- defResGetGZipped :: HsExp
- defResGetGZipped
- = let doExp = HsDo [ doFoundEntity
- , doSetContentType
- , bindMustGunzip
- , doConditionalOutput
- ]
- doFoundEntity
- = HsQualifier (HsApp (HsApp (HsVar (UnQual (HsIdent "foundEntity")))
- (HsVar (UnQual (HsIdent "entityTag"))))
- (HsVar (UnQual (HsIdent "lastModified"))))
- doSetContentType
- = HsQualifier (HsApp (HsVar (UnQual (HsIdent "setContentType")))
- (HsVar (UnQual (HsIdent "contentType"))))
- bindMustGunzip
- = HsGenerator undefined
- (HsPVar (HsIdent "mustGunzip"))
- (HsApp (HsApp (HsVar (UnQual (HsIdent "liftM")))
- (HsVar (UnQual (HsIdent "not"))))
- (HsParen
- (HsApp (HsVar (UnQual (HsIdent "isEncodingAcceptable")))
- (HsLit (HsString "gzip")))))
- doConditionalOutput
- = HsQualifier
- (HsIf (HsVar (UnQual (HsIdent "mustGunzip")))
- expOutputGunzipped
- expOutputGZipped)
- expOutputGunzipped
- = (HsApp (HsVar (UnQual (HsIdent "outputLBS")))
- (HsParen
- (HsApp (HsVar (UnQual (HsIdent "decompress")))
- (HsVar (UnQual (HsIdent "gzippedData"))))))
- expOutputGZipped
- = HsDo [ doSetContentEncodingGZip
- , doOutputGZipped
- ]
- doSetContentEncodingGZip
- = HsQualifier (HsApp (HsVar (UnQual (HsIdent "setContentEncoding")))
- (HsList [HsLit (HsString "gzip")]))
- doOutputGZipped
- = HsQualifier (HsApp (HsVar (UnQual (HsIdent "outputLBS")))
- (HsVar (UnQual (HsIdent "gzippedData"))))
- in
- HsApp (HsCon (UnQual (HsIdent "Just")))
- (HsParen doExp)
-
- defResGetRaw :: HsExp
- defResGetRaw
- = let doExp = HsDo [ doFoundEntity
- , doSetContentType
- , doOutputRawData
- ]
- doFoundEntity
- = HsQualifier (HsApp (HsApp (HsVar (UnQual (HsIdent "foundEntity")))
- (HsVar (UnQual (HsIdent "entityTag"))))
- (HsVar (UnQual (HsIdent "lastModified"))))
- doSetContentType
- = HsQualifier (HsApp (HsVar (UnQual (HsIdent "setContentType")))
- (HsVar (UnQual (HsIdent "contentType"))))
- doOutputRawData
- = HsQualifier (HsApp (HsVar (UnQual (HsIdent "outputLBS")))
- (HsVar (UnQual (HsIdent "rawData"))))
- in
- HsApp (HsCon (UnQual (HsIdent "Just")))
- (HsParen doExp)
-
- declEntityTag :: [HsDecl]
- declEntityTag
- = [ HsTypeSig undefined [HsIdent "entityTag"]
- (HsQualType []
- (HsTyCon (UnQual (HsIdent "ETag"))))
- , HsFunBind [HsMatch undefined (HsIdent "entityTag")
- [] (HsUnGuardedRhs defEntityTag) []]
- ]
-
- defEntityTag :: HsExp
- defEntityTag
- = HsApp (HsVar (UnQual (HsIdent "strongETag")))
- (HsLit (HsString eTag))
-
- declLastModified :: [HsDecl]
- declLastModified
- = [ HsTypeSig undefined [HsIdent "lastModified"]
- (HsQualType []
- (HsTyCon (UnQual (HsIdent "UTCTime"))))
- , HsFunBind [HsMatch undefined (HsIdent "lastModified")
- [] (HsUnGuardedRhs defLastModified) []]
- ]
-
- defLastModified :: HsExp
- defLastModified
- = HsApp (HsVar (UnQual (HsIdent "read")))
- (HsLit (HsString $ show lastMod))
-
-
- declContentType :: [HsDecl]
- declContentType
- = [ HsTypeSig undefined [HsIdent "contentType"]
- (HsQualType []
- (HsTyCon (UnQual (HsIdent "MIMEType"))))
- , HsFunBind [HsMatch undefined (HsIdent "contentType")
- [] (HsUnGuardedRhs defContentType) []]
- ]
-
- defContentType :: HsExp
- defContentType
- = HsApp (HsVar (UnQual (HsIdent "read")))
- (HsLit (HsString $ show mimeType))
-
- declGZippedData :: [HsDecl]
- declGZippedData
- = [ HsTypeSig undefined [HsIdent "gzippedData"]
- (HsQualType []
- (HsTyCon (Qual (Module "L") (HsIdent "ByteString"))))
- , HsFunBind [HsMatch undefined (HsIdent "gzippedData")
- [] (HsUnGuardedRhs defGZippedData) []]
- ]
-
- defGZippedData :: HsExp
- defGZippedData
- = HsApp (HsVar (Qual (Module "L") (HsIdent "pack")))
- (HsParen
- (HsApp (HsVar (UnQual (HsIdent "decode")))
- (HsLit (HsString gzippedB64))))
-
- declRawData :: [HsDecl]
- declRawData
- = [ HsTypeSig undefined [HsIdent "rawData"]
- (HsQualType []
- (HsTyCon (Qual (Module "L") (HsIdent "ByteString"))))
- , HsFunBind [HsMatch undefined (HsIdent "rawData")
- [] (HsUnGuardedRhs defRawData) []]
- ]
-
- defRawData :: HsExp
- defRawData
- = HsApp (HsVar (Qual (Module "L") (HsIdent "pack")))
- (HsParen
- (HsApp (HsVar (UnQual (HsIdent "decode")))
- (HsLit (HsString rawB64))))
+ rawB64 = B64.encode <$> Lazy.toChunks input
+ gzippedB64 = B64.encode <$> Lazy.toChunks gzippedData
+
+ header ← mkHeader srcFile originalLen gzippedLen useGZip mType tag lastMod
+
+ let hsModule = mkModule modName symName imports decls
+ imports = mkImports useGZip
+ decls = concat [ resourceDecl symName useGZip
+ , entityTagDecl tag
+ , lastModifiedDecl lastMod
+ , contentTypeDecl mType
+ , if useGZip then
+ dataDecl (name "gzippedData") gzippedB64
+ else
+ dataDecl (name "rawData") rawB64
+ ]
hPutStrLn output header
hPutStrLn output (prettyPrint hsModule)
hClose output
-
-mkHeader :: FilePath -> Int64 -> Int64 -> Bool -> MIMEType -> String -> UTCTime -> IO String
-mkHeader srcFile originalLen gzippedLen useGZip mimeType eTag lastMod
- = do localLastMod <- utcToLocalZonedTime lastMod
- return ("{- DO NOT EDIT THIS FILE.\n" ++
- " This file is automatically generated by the lucu-implant-file program.\n" ++
- "\n" ++
- " Source: " ++ (if srcFile == "-"
- then "(stdin)"
- else srcFile) ++ "\n" ++
- " Original Length: " ++ show originalLen ++ " bytes\n" ++
- (if useGZip
- then " Compressed Length: " ++ show gzippedLen ++ " bytes\n" ++
- " Compression: gzip\n"
- else " Compression: disabled\n") ++
- " MIME Type: " ++ show mimeType ++ "\n" ++
- " ETag: " ++ eTag ++ "\n" ++
- " Last Modified: " ++ show localLastMod ++ "\n" ++
- " -}")
-
-
-getModuleName :: [CmdOpt] -> IO String
-getModuleName opts
- = let modNameOpts = filter (\ x -> case x of
- OptModName _ -> True
- _ -> False) opts
- in
- case modNameOpts of
- [] -> error "a module name must be given."
- (OptModName modName):[] -> return modName
- _ -> error "too many --module options."
-
-
-getSymbolName :: [CmdOpt] -> String -> IO String
-getSymbolName opts modName
- = let symNameOpts = filter (\ x -> case x of
- OptSymName _ -> True
- _ -> False) opts
- -- モジュール名をピリオドで分割した時の最後の項目の先頭文字を
- -- 小文字にしたものを使ふ。
- defaultSymName = mkDefault modName
- mkDefault = headToLower . getLastComp
- headToLower = \ str -> case str of
- [] -> error "module name must not be empty"
- (x:xs) -> toLower x : xs
- getLastComp = reverse . fst . break (== '.') . reverse
- in
- case symNameOpts of
- [] -> return defaultSymName
- (OptSymName symName):[] -> return symName
- _ -> error "too many --symbol options."
-
-
-getMIMEType :: [CmdOpt] -> FilePath -> IO MIMEType
-getMIMEType opts srcFile
- = let mimeTypeOpts = filter (\ x -> case x of
- OptMIMEType _ -> True
- _ -> False) opts
- defaultType = fromMaybe (read "application/octet-stream")
- $ guessTypeByFileName defaultExtensionMap srcFile
+mkModule ∷ ModuleName → Name → [ImportDecl] → [Decl] → Module
+mkModule modName symName imports decls
+ = let modPragma = [ LanguagePragma (⊥) [ name (show OverloadedStrings) ] ]
+ exports = [ EVar (UnQual symName) ]
in
- case mimeTypeOpts of
- [] -> return defaultType
- (OptMIMEType mimeType):[] -> return $ read mimeType
- _ -> error "too many --mime-type options."
-
+ Module (⊥) modName modPragma Nothing (Just exports) imports decls
+
+mkImports ∷ Bool → [ImportDecl]
+mkImports useGZip
+ = [ ImportDecl (⊥) (ModuleName "Data.ByteString.Base64")
+ True False Nothing (Just (ModuleName "B64")) Nothing
+ , ImportDecl (⊥) (ModuleName "Data.ByteString.Lazy")
+ True False Nothing (Just (ModuleName "Lazy")) Nothing
+ , ImportDecl (⊥) (ModuleName "Data.Time")
+ False False Nothing Nothing Nothing
+ , ImportDecl (⊥) (ModuleName "Network.HTTP.Lucu")
+ False False Nothing Nothing Nothing
+ ]
+ ⧺
+ [ ImportDecl (⊥) (ModuleName "Codec.Compression.GZip")
+ False False Nothing Nothing Nothing
+ | useGZip ]
+
+resourceDecl ∷ Name → Bool → [Decl]
+resourceDecl symName useGZip
+ = [ TypeSig (⊥) [symName] (TyCon (UnQual (name "ResourceDef")))
+ , nameBind (⊥) symName valExp
+ ]
+ where
+ valExp ∷ Exp
+ valExp = RecUpdate (function "emptyResource")
+ [ FieldUpdate (UnQual (name "resGet" )) resGet
+ , FieldUpdate (UnQual (name "resHead")) resHead
+ ]
+
+ resGet ∷ Exp
+ resGet | useGZip = resGetGZipped
+ | otherwise = resGetRaw
+
+resHead ∷ Exp
+resHead
+ = function "Just" `app`
+ paren (doE [ foundEntityStmt
+ , setContentTypeStmt
+ ])
+
+resGetGZipped ∷ Exp
+resGetGZipped
+ = function "Just" `app`
+ paren (doE [ foundEntityStmt
+ , setContentTypeStmt
+ , bindGZipStmt
+ , conditionalOutputStmt
+ ])
+ where
+ condVarName ∷ Name
+ condVarName = name "gzipAllowed"
+
+ dataVarName ∷ Name
+ dataVarName = name "gzippedData"
+
+ bindGZipStmt ∷ Stmt
+ bindGZipStmt
+ = genStmt (⊥)
+ (pvar condVarName)
+ (function "isEncodingAcceptable" `app` strE "gzip")
+
+ conditionalOutputStmt ∷ Stmt
+ conditionalOutputStmt
+ = qualStmt $
+ If (var condVarName)
+ (doE [ setContentEncodingGZipStmt
+ , putChunksStmt (var dataVarName)
+ ])
+ (putChunksExp
+ (paren
+ (function "decompress" `app` var dataVarName)))
+
+resGetRaw ∷ Exp
+resGetRaw
+ = function "Just" `app`
+ paren (doE [ foundEntityStmt
+ , setContentTypeStmt
+ , putChunksStmt (function "rawData")
+ ])
+
+setContentEncodingGZipStmt ∷ Stmt
+setContentEncodingGZipStmt
+ = qualStmt
+ ( function "setContentEncoding"
+ `app`
+ listE [ strE "gzip" ]
+ )
+
+foundEntityStmt ∷ Stmt
+foundEntityStmt
+ = qualStmt $
+ metaFunction "foundEntity"
+ [ var (name "entityTag")
+ , var (name "lastModified")
+ ]
+
+setContentTypeStmt ∷ Stmt
+setContentTypeStmt
+ = qualStmt
+ ( function "setContentType"
+ `app`
+ function "contentType"
+ )
+
+putChunksExp ∷ Exp → Exp
+putChunksExp = app (function "putChunks")
+
+putChunksStmt ∷ Exp → Stmt
+putChunksStmt = qualStmt ∘ putChunksExp
+
+entityTagDecl ∷ ETag → [Decl]
+entityTagDecl tag
+ = [ TypeSig (⊥) [varName] (TyCon (UnQual (name "ETag")))
+ , nameBind (⊥) varName valExp
+ ]
+ where
+ varName ∷ Name
+ varName = name "entityTag"
+
+ valExp ∷ Exp
+ valExp = function "parseETag" `app` strE (eTagToString tag)
+
+lastModifiedDecl ∷ UTCTime → [Decl]
+lastModifiedDecl lastMod
+ = [ TypeSig (⊥) [varName] (TyCon (UnQual (name "UTCTime")))
+ , nameBind (⊥) varName valExp
+ , InlineSig (⊥) False AlwaysActive (UnQual varName)
+ ]
+ where
+ varName ∷ Name
+ varName = name "lastModified"
+
+ valExp ∷ Exp
+ valExp = function "read" `app` strE (show lastMod)
+
+contentTypeDecl ∷ MIMEType → [Decl]
+contentTypeDecl mime
+ = [ TypeSig (⊥) [varName] (TyCon (UnQual (name "MIMEType")))
+ , nameBind (⊥) varName valExp
+ , InlineSig (⊥) False AlwaysActive (UnQual varName)
+ ]
+ where
+ varName ∷ Name
+ varName = name "contentType"
-getLastModified :: FilePath -> IO UTCTime
-getLastModified "-" = getCurrentTime
-getLastModified fpath = getFileStatus fpath
- >>= return . posixSecondsToUTCTime . fromRational . toRational . modificationTime
+ valExp ∷ Exp
+ valExp = function "parseMIMEType" `app` strE (mimeToString mime)
+ mimeToString ∷ MIMEType → String
+ mimeToString = A.toString ∘ A.fromAsciiBuilder ∘ printMIMEType
-getETag :: [CmdOpt] -> Lazy.ByteString -> IO String
-getETag opts input
- = let eTagOpts = filter (\ x -> case x of
- OptETag _ -> True
- _ -> False) opts
- in
- case eTagOpts of
- [] -> return mkETagFromInput
- (OptETag str):[] -> return str
- _ -> error "too many --etag options."
+dataDecl ∷ Name → [Strict.ByteString] → [Decl]
+dataDecl varName chunks
+ = [ TypeSig (⊥) [varName] (TyCon (Qual (ModuleName "Lazy") (name "ByteString")))
+ , nameBind (⊥) varName valExp
+ , InlineSig (⊥) False AlwaysActive (UnQual varName)
+ ]
+ where
+ valExp ∷ Exp
+ valExp = qvar (ModuleName "Lazy") (name "fromChunks")
+ `app`
+ listE (chunkToExp <$> chunks)
+
+ chunkToExp ∷ Strict.ByteString → Exp
+ chunkToExp chunk
+ = qvar (ModuleName "B64") (name "decodeLenient")
+ `app`
+ strE (Strict.unpack chunk)
+
+mkHeader ∷ FilePath → Int64 → Int64 → Bool → MIMEType → ETag → UTCTime → IO String
+mkHeader srcFile originalLen gzippedLen useGZip mType tag lastMod
+ = do localLastMod ← utcToLocalZonedTime lastMod
+ return $ concat
+ [ "{- DO NOT EDIT THIS FILE.\n"
+ , " This file is automatically generated by the lucu-implant-file program.\n"
+ , "\n"
+ , " Source: ", if srcFile ≡ "-" then
+ "(stdin)"
+ else
+ srcFile
+ , "\n"
+ , " Original Length: ", show originalLen, " bytes\n"
+ , if useGZip then
+ " Compressed Length: " ⧺ show gzippedLen ⧺ " bytes\n" ⧺
+ " Compression: gzip\n"
+ else
+ " Compression: disabled\n"
+ , " MIME Type: ", mimeTypeToString mType, "\n"
+ , " ETag: ", eTagToString tag, "\n"
+ , " Last Modified: ", show localLastMod, "\n"
+ , " -}"
+ ]
+
+eTagToString ∷ ETag → String
+eTagToString = A.toString ∘ A.fromAsciiBuilder ∘ printETag
+
+mimeTypeToString ∷ MIMEType → String
+mimeTypeToString = A.toString ∘ A.fromAsciiBuilder ∘ printMIMEType
+
+getModuleName ∷ [CmdOpt] → IO ModuleName
+getModuleName opts
+ = case modNameOpts of
+ [] → fail "a module name must be given."
+ OptModName modName:[] → return $ ModuleName modName
+ _ → fail "too many --module options."
where
- mkETagFromInput :: String
- mkETagFromInput = "SHA-1:" ++ (toHex $ toOctets $ sha256 $ L.unpack input)
+ modNameOpts ∷ [CmdOpt]
+ modNameOpts = filter (\ x → case x of
+ OptModName _ → True
+ _ → False) opts
+
+getSymbolName ∷ [CmdOpt] → ModuleName → IO Name
+getSymbolName opts (ModuleName modName)
+ = case symNameOpts of
+ [] → return defaultSymName
+ OptSymName symName:[] → return $ name symName
+ _ → fail "too many --symbol options."
+ where
+ symNameOpts ∷ [CmdOpt]
+ symNameOpts = filter (\ x → case x of
+ OptSymName _ → True
+ _ → False) opts
- toHex :: [Word8] -> String
- toHex [] = ""
- toHex (x:xs) = hexByte (fromIntegral x) ++ toHex xs
+ defaultSymName ∷ Name
+ defaultSymName
+ = name $ headToLower $ getLastComp modName
- hexByte :: Int -> String
- hexByte n
- = hex4bit ((n `shiftR` 4) .&. 0x0F) : hex4bit (n .&. 0x0F) : []
+ headToLower ∷ String → String
+ headToLower [] = error "module name must not be empty"
+ headToLower (x:xs) = toLower x : xs
- hex4bit :: Int -> Char
- hex4bit n
- | n < 10 = (chr $ ord '0' + n )
- | n < 16 = (chr $ ord 'a' + n - 10)
- | otherwise = undefined
+ getLastComp ∷ String → String
+ getLastComp = reverse ∘ fst ∘ break (≡ '.') ∘ reverse
+getMIMEType ∷ [CmdOpt] → FilePath → IO MIMEType
+getMIMEType opts srcFile
+ = case mimeTypeOpts of
+ [] → return defaultType
+ OptMIMEType ty:[]
+ → case A.fromChars ty of
+ Just a → return $ parseMIMEType a
+ Nothing → fail "MIME type must not contain any non-ASCII letters."
+ _ → fail "too many --mime-type options."
+ where
+ mimeTypeOpts ∷ [CmdOpt]
+ mimeTypeOpts
+ = filter (\ x → case x of
+ OptMIMEType _ → True
+ _ → False) opts
-openInput :: FilePath -> IO Lazy.ByteString
-openInput "-" = L.getContents
-openInput fpath = L.readFile fpath
+ octetStream ∷ MIMEType
+ octetStream = parseMIMEType "application/octet-stream"
+ defaultType ∷ MIMEType
+ defaultType = fromMaybe octetStream
+ $ guessTypeByFileName defaultExtensionMap srcFile
-openOutput :: [CmdOpt] -> IO Handle
-openOutput opts
- = let outputOpts = filter (\ x -> case x of
- OptOutput _ -> True
- _ -> False) opts
- in
- case outputOpts of
- [] -> return stdout
- (OptOutput fpath):[] -> openFile fpath WriteMode
- _ -> error "two many --output options."
+getLastModified ∷ FilePath → IO UTCTime
+getLastModified "-" = getCurrentTime
+getLastModified fpath = (posixSecondsToUTCTime ∘ fromRational ∘ toRational ∘ modificationTime)
+ <$>
+ getFileStatus fpath
+getETag ∷ [CmdOpt] → Lazy.ByteString → IO ETag
+getETag opts input
+ = case eTagOpts of
+ [] → return mkETagFromInput
+ OptETag str:[] → return $ strToETag str
+ _ → fail "too many --etag options."
+ where
+ eTagOpts ∷ [CmdOpt]
+ eTagOpts = filter (\ x → case x of
+ OptETag _ → True
+ _ → False) opts
+
+ mkETagFromInput ∷ ETag
+ mkETagFromInput
+ = strToETag $ "SHA-1:" ⧺ showDigest (sha1 input)
+
+ strToETag ∷ String → ETag
+ strToETag str
+ = case A.fromChars str of
+ Just a → strongETag a
+ Nothing → error "ETag must not contain any non-ASCII letters."
+
+openInput ∷ FilePath → IO Lazy.ByteString
+openInput "-" = Lazy.getContents
+openInput fpath = Lazy.readFile fpath
+
+openOutput ∷ [CmdOpt] → IO Handle
+openOutput opts
+ = case outputOpts of
+ [] → return stdout
+ OptOutput fpath:[] → openFile fpath WriteMode
+ _ → fail "two many --output options."
+ where
+ outputOpts ∷ [CmdOpt]
+ outputOpts = filter (\ x → case x of
+ OptOutput _ → True
+ _ → False) opts
{-
作られるファイルの例 (壓縮されない場合):
Compressed Length: 453 bytes -- これは Compression: disabled の時には無い
Compression: disabled
MIME Type: image/png
- ETag: d41d8cd98f00b204e9800998ecf8427e
+ ETag: "d41d8cd98f00b204e9800998ecf8427e"
Last Modified: 2007-11-05 13:53:42.231882 JST
-}
+ {-# LANGUAGE OverloadedStrings #-}
module Foo.Bar.Baz (baz) where
- import Codec.Binary.Base64
- import qualified Data.ByteString.Lazy as L
+ import qualified Data.ByteString.Base64 as B64
+ import qualified Data.ByteString.Lazy as Lazy
import Data.Time
import Network.HTTP.Lucu
- baz :: ResourceDef
+ baz ∷ ResourceDef
baz = ResourceDef {
resUsesNativeThread = False
, resIsGreedy = False
, resGet
- = Just (do foundEntity entityTag lastModified
- setContentType contentType
- outputLBS rawData)
- , resHead = Nothing
+ = Just $ do foundEntity entityTag lastModified
+ setContentType contentType
+ putChunk rawData
+ , resHead
+ = Just $ do foundEntity entityTag lastModified
+ setContentType contentType
, resPost = Nothing
, resPut = Nothing
, resDelete = Nothing
}
- entityTag :: ETag
+ entityTag ∷ ETag
entityTag = strongETag "d41d8cd98f00b204e9800998ecf8427e"
- lastModified :: UTCTime
+ lastModified ∷ UTCTime
+ {-# NOINLINE lastModified #-}
lastModified = read "2007-11-05 04:47:56.008366 UTC"
- contentType :: MIMEType
- contentType = read "image/png"
+ contentType ∷ MIMEType
+ {-# NOINLINE contentType #-}
+ contentType = parseMIMEType "image/png"
- rawData :: L.ByteString
- rawData = L.pack (decode "IyEvdXNyL2Jpbi9lbnYgcnVuZ2hjCgppbXBvcnQgRGlzdHJ...")
+ rawData ∷ Lazy.ByteString
+ {-# NOINLINE rawData #-}
+ rawData = Lazy.fromChunks
+ [ B64.decodeLenient "IyEvdXNyL2Jpbi9lbnYgcnVuZ2hjCgppbXBvcnQgRG..."
+ , B64.decodeLenient "Otb/+DniOlRgAAAAYAAAAGAAAAB/6QOmToAEIGAAAA..."
+ ]
------------------------------------------------------------------------------
壓縮される場合は次のやうに變はる:
------------------------------------------------------------------------------
-- import に追加
- import Control.Monad
- import Codec.Compression.GZip
+ import Codec.Compression.Zlib
-- ResourceDef は次のやうに變化
- baz :: ResourceDef
+ baz ∷ ResourceDef
baz = ResourceDef {
resUsesNativeThread = False
, resIsGreedy = False
, resGet
- = Just (do foundEntity entityTag lastModified
- setContentType contentType
-
- mustGunzip <- liftM not (isEncodingAcceptable "gzip")
- if mustGunzip then
- outputLBS (decompress gzippedData)
- else
- do setContentEncoding ["gzip"]
- outputLBS gzippedData
- , resHead = Nothing
+ = Just $ do foundEntity entityTag lastModified
+ setContentType contentType
+
+ gzipAllowed ← isEncodingAcceptable "gzip"
+ if gzipAllowed then
+ do setContentEncoding ["gzip"]
+ putChunks gzippedData
+ else
+ putChunks (decompress gzippedData)
+ , resHead
+ = Just $ do foundEntity entityTag lastModified
+ setContentType contentType
, resPost = Nothing
, resPut = Nothing
, resDelete = Nothing
}
-
+
-- rawData の代はりに gzippedData
- gzippedData :: L.ByteString
- gzippedData = L.pack (decode "Otb/+DniOlRgAAAAYAAAAGAAAAB/6QOmToAEIGAAAAB...")
+ gzippedData ∷ Lazy.ByteString
+ {-# NOINLINE gzippedData #-}
+ gzippedData = Lazy.fromChunks
+ [ B64.decodeLenient "IyEvdXNyL2Jpbi9lbnYgcnVuZ2hjCgppbXBvcnQ..."
+ , B64.decodeLenient "Otb/+DniOlRgAAAAYAAAAGAAAAB/6QOmToAEIGA..."
+ ]
------------------------------------------------------------------------------
-}
projects / Lucu.git / blobdiff