{-# LANGUAGE
UnicodeSyntax
#-}
-module Main where
-import Codec.Compression.GZip
+module Main (main) where
import Control.Applicative
import Control.Monad
import qualified Data.Ascii as A
-import Data.Bits
-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.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 Language.Haskell.TH.PprLib
+import Language.Haskell.TH.Syntax
import Network.HTTP.Lucu.ETag
+import Network.HTTP.Lucu.Implant
+import Network.HTTP.Lucu.Implant.PrettyPrint
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
deriving (Eq, Show)
options ∷ [OptDescr CmdOpt]
-options = [ Option ['o'] ["output"]
+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."
]
where
msg = [ ""
, "Description:"
- , concat [ " lucu-implant-file is an utility that generates "
+ , 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."
exitWith $ ExitFailure 1
when (length sources ≥ 2)
- $ error "too many input files."
+ $ fail "too many input files."
generateHaskellSource opts (head sources)
-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 compParams = defaultCompressParams { compressLevel = bestCompression }
- gzippedData = compressWith compParams input
- originalLen = Lazy.length input
- gzippedLen = Lazy.length gzippedData
- useGZip = originalLen > gzippedLen
- rawB64 = B64.encode <$> Lazy.toChunks input
- gzippedB64 = B64.encode <$> Lazy.toChunks gzippedData
-
- header ← mkHeader srcFile originalLen gzippedLen useGZip mimeType eTag lastMod
-
- let hsModule = mkModule (ModuleName modName) (name symName) imports decls
- imports = mkImports useGZip
- decls = concat [ declResourceDef
- , entityTagDecl eTag
- , lastModifiedDecl lastMod
- , contentTypeDecl mimeType
- , if useGZip then
- dataDecl (name "gzippedData") gzippedB64
- else
- dataDecl (name "rawData") rawB64
- ]
- declResourceDef
- = [ HsTypeSig (⊥) [HsIdent symName]
- (HsQualType []
- (HsTyCon (UnQual (HsIdent "ResourceDef"))))
- , HsFunBind [HsMatch (⊥) (HsIdent symName)
- [] (HsUnGuardedRhs defResourceDef) []]
- ]
-
- defResourceDef ∷ HsExp
- defResourceDef
- = let defResGet = if useGZip
- then defResGetGZipped
- else resGetRaw
- 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 [ foundEntityStmt
- , setContentTypeStmt
- , bindMustGunzip
- , doConditionalOutput
- ]
- bindMustGunzip
- = HsGenerator (⊥)
- (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 [ setContentEncodingGZipStmt
- , outputStmt (var $ name "gzippedData")
- ]
- in
- HsApp (HsCon (UnQual (HsIdent "Just")))
- (HsParen doExp)
-
- hPutStrLn output header
- hPutStrLn output (prettyPrint hsModule)
- hClose output
-
-mkModule ∷ ModuleName → Name → [ImportDecl] → [Decl]
-mkModule modName symName imports decls
- = let modPragma = [ LanguagePragma (⊥) [ name (show OverloadedStrings)
- ]
- ]
- exports = [ EVar (UnQual symName)
- ]
- in
- Module (⊥) modName modPragma Nothing (Just exports) imports decls
-
-mkImports ∷ Bool → [ImportDecl]
-mkImports useGZip
- = [ ImportDecl (⊥) (ModuleName "Data.ByteString.Base64")
- True False (Just (ModuleName "B64")) Nothing
- , ImportDecl (⊥) (ModuleName "Data.ByteString.Lazy")
- True False (Just (ModuleName "Lazy")) Nothing
- , ImportDecl (⊥) (ModuleName "Data.Time")
- False False Nothing Nothing
- , ImportDecl (⊥) (ModuleName "Network.HTTP.Lucu")
- False False Nothing Nothing
- ]
- ⧺
- if useGZip then
- [ ImportDecl (⊥) (ModuleName "Codec.Compression.GZip")
- False False Nothing Nothing
- ]
- else
- []
-
-resHead ∷ Exp
-resHead
- = infixApp (var $ name "Just")
- (op $ name "$" )
- (doE [ foundEntityStmt
- , setContentTypeStmt
- ])
-
-resGetRaw ∷ Exp
-resGetRaw
- = infixApp (var $ name "Just")
- (op $ name "$" )
- (doE [ foundEntityStmt
- , setContentTypeStmt
- , outputStmt (var $ name "rawData")
- ])
-
-setContentEncodingGZipStmt ∷ Stmt
-setContentEncodingGZipStmt
- = qualStmt $
- metaFunction "setContentEncoding" $
- [ listE [ strE "gzip" ] ]
-
-foundEntityStmt ∷ Stmt
-foundEntityStmt
- = qualStmt $
- metaFunction "foundEntity" $
- [ var $ name "entityTag"
- , var $ name "lastModified"
- ]
-
-setContentTypeStmt ∷ Stmt
-setContentTypeStmt
- = qualStmt $
- metaFunction "setContentType" $
- [var $ name "contentType"]
-
-outputStmt ∷ Exp → Stmt
-outputStmt e
- = qualStmt $
- metaFunction "output" [e]
-
-entityTagDecl ∷ ETag → [Decl]
-entityTagDecl eTag
- = [ TypeSig (⊥) [varName] (TyCon (UnQual (name "ETag")))
- , nameBind (⊥) varName valExp
- ]
- where
- varName ∷ Name
- varName = name "entityTag"
-
- valExp ∷ Exp
- valExp = metaFunction "parseETag" [strE $ eTagToString eTag]
-
- eTagToString ∷ ETag → String
- eTagToString = A.toString ∘ A.fromAsciiBuilder ∘ printETag
-
-lastModifiedDecl ∷ UTCTime → [Decl]
-lastModifiedDecl lastMod
- = [ TypeSig (⊥) [varName] (TyCon (UnQual (name "UTCTime")))
- , nameBind (⊥) varName valExp
- ]
- where
- varName ∷ Name
- varName = name "lastModified"
-
- valExp ∷ Exp
- valExp = metaFunction "read" [strE $ show lastMod]
-
-contentTypeDecl ∷ MIMEType → [Decl]
-contentTypeDecl mime
- = [ TypeSig (⊥) [varName] (TyCon (UnQual (name "MIMEType")))
- , nameBind (⊥) varName valExp
- ]
- where
- varName ∷ Name
- varName = name "contentType"
-
- valExp ∷ Exp
- valExp = metaFunction "parseMIMEType" [mimeToString mime]
-
- mimeToString ∷ MIMEType → String
- mimeToString = A.toString ∘ A.fromAsciiBuilder ∘ printMIMEType
-
-dataDecl ∷ Name → [Strict.ByteString] → [Decl]
-dataDecl varName chunks
- = [ TypeSig (⊥) [varName] (TyCon (Qual (ModuleName "Lazy") (name "ByteString")))
- , nameBind (⊥) varName valExp
- ]
- 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 → 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
+getMIMEType ∷ [CmdOpt] → Maybe MIMEType
+getMIMEType opts
= case mimeTypeOpts of
- [] → return defaultType
- (OptMIMEType ty):[] → return $ read ty
- _ → error "too many --mime-type options."
+ [] → Nothing
+ OptMIMEType ty:[]
+ → case A.fromChars ty of
+ Just a → Just $ parseMIMEType a
+ Nothing → error "MIME types must not contain any non-ASCII letters."
+ _ → error "too many --mime-type options."
where
mimeTypeOpts ∷ [CmdOpt]
mimeTypeOpts
OptMIMEType _ → True
_ → False) opts
- octetStream ∷ MIMEType
- octetStream = parseMIMEType "application/octet-stream"
-
- defaultType ∷ MIMEType
- defaultType = fromMaybe octetStream
- $ guessTypeByFileName defaultExtensionMap srcFile
-
-
-getLastModified ∷ FilePath → IO UTCTime
-getLastModified "-" = getCurrentTime
-getLastModified fpath = (posixSecondsToUTCTime ∘ fromRational ∘ toRational ∘ modificationTime)
- <$>
- getFileStatus fpath
-
-
-getETag ∷ [CmdOpt] → Lazy.ByteString → IO String
-getETag opts input
- = let eTagOpts = filter (\ x → case x of
- OptETag _ → True
- _ → False) opts
- in
- case eTagOpts of
- [] → fmap (mkETagFromInput ∘ fromJust) (getDigestByName "SHA1")
- (OptETag str):[] → return str
- _ → error "too many --etag options."
+getETag ∷ [CmdOpt] → Maybe ETag
+getETag opts
+ = case eTagOpts of
+ [] → Nothing
+ OptETag str:[] → Just $ strToETag str
+ _ → error "too many --etag options."
where
- mkETagFromInput ∷ Digest → String
- mkETagFromInput sha1 = "SHA-1:" ++ toHex (digestLBS sha1 input)
-
- toHex ∷ String → String
- toHex = foldr ((++) ∘ hexByte ∘ fromEnum) ""
-
- hexByte ∷ Int → String
- hexByte n
- = [ hex4bit ((n `shiftR` 4) .&. 0x0F)
- , hex4bit ( n .&. 0x0F)
- ]
-
- hex4bit ∷ Int → Char
- hex4bit n
- | n < 10 = chr $ ord '0' + n
- | n < 16 = chr $ ord 'a' + n - 10
- | otherwise = (⊥)
-
-
-openInput ∷ FilePath → IO Lazy.ByteString
-openInput "-" = Lazy.getContents
-openInput fpath = Lazy.readFile fpath
+ eTagOpts ∷ [CmdOpt]
+ eTagOpts = filter (\ x → case x of
+ OptETag _ → True
+ _ → False) opts
+ strToETag ∷ String → ETag
+ strToETag str
+ = case A.fromChars str of
+ Just a → strongETag a
+ Nothing → error "ETag must not contain any non-ASCII letters."
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."
-
-{-
- 作られるファイルの例 (壓縮されない場合):
- ------------------------------------------------------------------------------
- {- DO NOT EDIT THIS FILE.
- This file is automatically generated by the lucu-implant-file program.
-
- Source: baz.png
- Original Length: 302 bytes
- Compressed Length: 453 bytes -- これは Compression: disabled の時には無い
- Compression: disabled
- MIME Type: image/png
- ETag: d41d8cd98f00b204e9800998ecf8427e
- Last Modified: 2007-11-05 13:53:42.231882 JST
- -}
- {-# LANGUAGE OverloadedStrings #-}
- module Foo.Bar.Baz (baz) where
- 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 {
- resUsesNativeThread = False
- , resIsGreedy = False
- , resGet
- = Just $ do foundEntity entityTag lastModified
- setContentType contentType
- output rawData
- , resHead
- = Just $ do foundEntity entityTag lastModified
- setContentType contentType
- , resPost = Nothing
- , resPut = Nothing
- , resDelete = Nothing
- }
-
- entityTag ∷ ETag
- entityTag = strongETag "d41d8cd98f00b204e9800998ecf8427e"
-
- lastModified ∷ UTCTime
- lastModified = read "2007-11-05 04:47:56.008366 UTC"
+ = case outputOpts of
+ [] → return stdout
+ OptOutput fpath:[] → do h ← openFile fpath WriteMode
+ hSetEncoding h utf8
+ return h
+ _ → fail "two many --output options."
+ where
+ outputOpts ∷ [CmdOpt]
+ outputOpts = filter (\ x → case x of
+ OptOutput _ → True
+ _ → False) opts
- contentType ∷ MIMEType
- contentType = parseMIMEType "image/png"
+getModuleName ∷ [CmdOpt] → ModName
+getModuleName opts
+ = case modNameOpts of
+ [] → error "a module name must be given."
+ OptModName name:[] → mkModName name
+ _ → error "too many --module options."
+ where
+ modNameOpts ∷ [CmdOpt]
+ modNameOpts = filter (\ x → case x of
+ OptModName _ → True
+ _ → False) opts
+
+getSymbolName ∷ [CmdOpt] → Maybe Name
+getSymbolName opts
+ = case symNameOpts of
+ [] → Nothing
+ OptSymName name:[] → Just $ mkName name
+ _ → fail "too many --symbol options."
+ where
+ symNameOpts ∷ [CmdOpt]
+ symNameOpts = filter (\ x → case x of
+ OptSymName _ → True
+ _ → False) opts
- rawData ∷ Lazy.ByteString
- rawData = Lazy.fromChunks
- [ B64.decodeLenient "IyEvdXNyL2Jpbi9lbnYgcnVuZ2hjCgppbXBvcnQgRG..."
- , B64.decodeLenient "Otb/+DniOlRgAAAAYAAAAGAAAAB/6QOmToAEIGAAAA..."
- ]
- ------------------------------------------------------------------------------
+defaultSymName ∷ ModName → Name
+defaultSymName = headToLower ∘ getLastComp
+ where
+ headToLower ∷ String → Name
+ headToLower [] = error "module name must not be empty"
+ headToLower (x:xs) = mkName (toLower x:xs)
- 壓縮される場合は次のやうに變はる:
- ------------------------------------------------------------------------------
- -- import に追加
- import Codec.Compression.GZip
+ getLastComp ∷ ModName → String
+ getLastComp = reverse ∘ fst ∘ break (≡ '.') ∘ reverse ∘ modString
- -- ResourceDef は次のやうに變化
- baz ∷ ResourceDef
- baz = ResourceDef {
- resUsesNativeThread = False
- , resIsGreedy = False
- , resGet
- = Just $ do foundEntity entityTag lastModified
- setContentType contentType
+generateHaskellSource ∷ [CmdOpt] → FilePath → IO ()
+generateHaskellSource opts srcFile
+ = do i ← openInput srcFile (getMIMEType opts) (getETag opts)
+ o ← openOutput opts
+ doc ← pprInput i modName symName
+ hPutStrLn o ∘ show $ to_HPJ_Doc doc
+ hClose o
+ where
+ modName ∷ ModName
+ modName = getModuleName opts
- gzip ← isEncodingAcceptable "gzip"
- if gzip then
- do setContentEncoding ["gzip"]
- output gzippedData
- else
- output (decompress gzippedData)
- , resHead
- = Just $ do foundEntity entityTag lastModified
- setContentType contentType
- , resPost = Nothing
- , resPut = Nothing
- , resDelete = Nothing
- }
-
- -- rawData の代はりに gzippedData
- gzippedData ∷ Lazy.ByteString
- gzippedData = Lazy.fromChunks
- [ B64.decodeLenient "IyEvdXNyL2Jpbi9lbnYgcnVuZ2hjCgppbXBvcnQ..."
- , B64.decodeLenient "Otb/+DniOlRgAAAAYAAAAGAAAAB/6QOmToAEIGA..."
- ]
- ------------------------------------------------------------------------------
- -}
+ symName ∷ Name
+ symName = fromMaybe (defaultSymName modName)
+ $ getSymbolName opts
projects / Lucu.git / blobdiff