Remove old/. View tag v0.4.2 instead
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Tony Hannan
parent
d0ddc814a9
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4085572e60
3 changed files with 0 additions and 1749 deletions
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@ -1,627 +0,0 @@
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{-
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Copyright (C) 2010 Scott R Parish <srp@srparish.net>
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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-}
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module Database.MongoDB.BSON
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(
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-- * Types
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BsonValue(..),
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BsonDoc,
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BinarySubType(..),
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-- * BsonDoc Operations
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empty,
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-- * Type Conversion
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fromBson, toBson,
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fromBsonDoc, toBsonDoc,
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-- * Binary encoding/decoding
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getBsonDoc, putBsonDoc,
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-- * ObjectId creation
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ObjectIdGen, mkObjectIdGen, genObjectId,
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)
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where
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import Prelude hiding (lookup)
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import qualified Control.Arrow as Arrow
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import Control.Exception
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import Control.Monad
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import Data.Binary
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import Data.Binary.Get
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import Data.Binary.IEEE754
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import Data.Binary.Put
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import Data.Bits
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import Data.ByteString.Char8 as C8 hiding (empty)
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import qualified Data.ByteString.Lazy as L
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import qualified Data.ByteString.Lazy.UTF8 as L8
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import qualified Data.ByteString.UTF8 as S8
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import Data.Digest.OpenSSL.MD5
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import Data.Int
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import Data.IORef
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import qualified Data.List as List
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import qualified Data.Map as Map
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import Data.Time.Clock.POSIX
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import Data.Typeable
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import Database.MongoDB.Util
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import Network.BSD
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import Numeric
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import System.IO.Unsafe
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import System.Posix.Process
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-- | BsonValue is the type that can be used as a value in a 'BsonDoc'.
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data BsonValue
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= BsonDouble Double
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| BsonString L8.ByteString
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| BsonDoc BsonDoc
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| BsonArray [BsonValue]
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| BsonUndefined
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| BsonBinary BinarySubType L.ByteString
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| BsonObjectId Integer
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| BsonBool !Bool
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| BsonDate POSIXTime
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| BsonNull
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| BsonRegex L8.ByteString String
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| BsonJSCode L8.ByteString
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| BsonSymbol L8.ByteString
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| BsonJSCodeWScope L8.ByteString BsonDoc
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| BsonInt32 Int32
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| BsonInt64 Int64
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| BsonMinKey
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| BsonMaxKey
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deriving (Show, Eq, Ord)
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type BsonDoc = [(L8.ByteString, BsonValue)]
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-- | An empty BsonDoc
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empty :: BsonDoc
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empty = []
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data DataType =
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DataMinKey | -- -1
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DataNumber | -- 1
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DataString | -- 2
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DataDoc | -- 3
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DataArray | -- 4
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DataBinary | -- 5
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DataUndefined | -- 6
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DataOid | -- 7
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DataBoolean | -- 8
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DataDate | -- 9
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DataNull | -- 10
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DataRegex | -- 11
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DataRef | -- 12
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DataJSCode | -- 13
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DataSymbol | -- 14
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DataJSCodeWScope | -- 15
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DataInt | -- 16
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DataTimestamp | -- 17
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DataLong | -- 18
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DataMaxKey -- 127
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deriving (Show, Read, Enum, Eq, Ord)
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toDataType :: Int -> DataType
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toDataType (-1) = DataMinKey
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toDataType 127 = DataMaxKey
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toDataType d = toEnum d
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fromDataType :: DataType -> Int8
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fromDataType DataMinKey = - 1
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fromDataType DataMaxKey = 127
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fromDataType d = fromIntegral $ fromEnum d
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data BinarySubType =
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BSTUNDEFINED1 |
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BSTFunction | -- 1
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BSTByteArray | -- 2
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BSTUUID | -- 3
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BSTUNDEFINED2 |
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BSTMD5 | -- 5
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BSTUserDefined
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deriving (Show, Read, Enum, Eq, Ord)
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toBinarySubType :: Int -> BinarySubType
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toBinarySubType 0x80 = BSTUserDefined
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toBinarySubType d = toEnum d
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fromBinarySubType :: BinarySubType -> Int8
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fromBinarySubType BSTUserDefined = 0x80
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fromBinarySubType d = fromIntegral $ fromEnum d
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data ObjectIdGen = ObjectIdGen {
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oigMachine :: Integer,
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oigInc :: IORef Integer
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}
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globalObjectIdInc :: IORef Integer
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{-# NOINLINE globalObjectIdInc #-}
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globalObjectIdInc = unsafePerformIO (newIORef 0)
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-- | Create a new 'ObjectIdGen', the structure that must be passed to
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-- genObjectId to create a 'ObjectId'.
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mkObjectIdGen :: IO ObjectIdGen
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mkObjectIdGen = do
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host <- liftM (fst . (!! 0) . readHex . List.take 6 . md5sum . C8.pack)
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getHostName
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return ObjectIdGen {oigMachine = host, oigInc = globalObjectIdInc}
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-- | Create a new 'ObjectId'.
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genObjectId :: ObjectIdGen -> IO BsonValue
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genObjectId oig = do
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now <- liftM (truncate . (realToFrac :: POSIXTime -> Double)) getPOSIXTime
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pid <- liftM fromIntegral getProcessID
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inc <- atomicModifyIORef (oigInc oig) $ \i -> ((i+1) `rem` 0x10000, i)
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return $ BsonObjectId
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((now `shiftL` 64) .|.
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oigMachine oig `shiftL` 40 .|.
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(0xffff .&. pid) `shiftL` 24 .|.
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(inc `div` 0x100) `shiftL` 8 .|. (inc `rem` 0x100))
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-- | Decode binary bytes into 'BsonDoc'.
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getBsonDoc :: Get BsonDoc
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getBsonDoc = liftM snd getDoc
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-- | Encode 'BsonDoc' into binary bytes.
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putBsonDoc :: BsonDoc -> Put
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putBsonDoc = putObj
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getVal :: DataType -> Get (Integer, BsonValue)
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getVal DataNumber = liftM ((,) 8 . BsonDouble) getFloat64le
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getVal DataString = do
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sLen1 <- getI32
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(_sLen2, s) <- getS
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return (fromIntegral $ 4 + sLen1, BsonString s)
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getVal DataDoc = getDoc >>= \(len, obj) -> return (len, BsonDoc obj)
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getVal DataArray = do
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bytes <- getI32
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arr <- getInnerArray (bytes - 4)
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getNull
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return (fromIntegral bytes, BsonArray arr)
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getVal DataBinary = do
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len1 <- getI32
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st <- getI8
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(len, hdrLen) <- if toBinarySubType st == BSTByteArray
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then do
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len2 <- getI32
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assert (len1 - 4 == len2) $ return ()
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return (len2, 4 + 1 + 4)
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else return (len1, 4 + 1)
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bs <- getLazyByteString $ fromIntegral len
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return (hdrLen + fromIntegral len, BsonBinary (toBinarySubType st) bs)
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getVal DataUndefined = return (1, BsonUndefined)
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getVal DataOid = do
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oid1 <- getWord64be
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oid2 <- getWord32be
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let oid = (fromIntegral oid1 `shiftL` 32) .|. fromIntegral oid2
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return (12, BsonObjectId oid)
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getVal DataBoolean = liftM ((,) (1::Integer) . BsonBool . (/= (0::Int))) getI8
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getVal DataDate = liftM ((,) 8 . BsonDate . flip (/) 1000 . realToFrac) getI64
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getVal DataNull = return (1, BsonNull)
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getVal DataRegex = fail "DataJSCode not yet supported" -- TODO
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getVal DataRef = fail "DataRef is deprecated"
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getVal DataJSCode = do
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sLen1 <- getI32
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(_sLen2, s) <- getS
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return (fromIntegral $ 4 + sLen1, BsonJSCode s)
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getVal DataSymbol = do
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sLen1 <- getI32
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(_sLen2, s) <- getS
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return (fromIntegral $ 4 + sLen1, BsonString s)
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getVal DataJSCodeWScope = do
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sLen1 <- getI32
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(_, qry) <- getS
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(_, scope) <- getDoc
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return (fromIntegral sLen1, BsonJSCodeWScope qry scope)
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getVal DataInt = liftM ((,) 4 . BsonInt32 . fromIntegral) getI32
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getVal DataTimestamp = fail "DataTimestamp not yet supported" -- TODO
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getVal DataLong = liftM ((,) 8 . BsonInt64) getI64
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getVal DataMinKey = return (0, BsonMinKey)
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getVal DataMaxKey = return (0, BsonMaxKey)
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getInnerObj :: Int32 -> Get BsonDoc
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getInnerObj 1 = return []
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getInnerObj bytesLeft = do
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typ <- getDataType
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(keySz, key) <- getS
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(valSz, val) <- getVal typ
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rest <- getInnerObj (bytesLeft - 1 - fromIntegral keySz - fromIntegral valSz)
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return $ (key, val) : rest
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getRawObj :: Get (Integer, BsonDoc)
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getRawObj = do
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bytes <- getI32
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obj <- getInnerObj (bytes - 4)
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getNull
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return (fromIntegral bytes, obj)
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getInnerArray :: Int32 -> Get [BsonValue]
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getInnerArray 1 = return []
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getInnerArray bytesLeft = do
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typ <- getDataType
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(keySz, _key) <- getS
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(valSz, val) <- getVal typ
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rest <- getInnerArray
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(bytesLeft - 1 - fromIntegral keySz - fromIntegral valSz)
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return $ val : rest
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getDoc :: Get (Integer, BsonDoc)
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getDoc = getRawObj
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getDataType :: Get DataType
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getDataType = liftM toDataType getI8
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putType :: BsonValue -> Put
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putType BsonDouble{} = putDataType DataNumber
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putType BsonString{} = putDataType DataString
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putType BsonDoc{} = putDataType DataDoc
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putType BsonArray{} = putDataType DataArray
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putType BsonBinary{} = putDataType DataBinary
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putType BsonUndefined = putDataType DataUndefined
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putType BsonObjectId{} = putDataType DataOid
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putType BsonBool{} = putDataType DataBoolean
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putType BsonDate{} = putDataType DataDate
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putType BsonNull = putDataType DataNull
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putType BsonRegex{} = putDataType DataRegex
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-- putType = putDataType DataRef
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putType BsonJSCode {} = putDataType DataJSCode
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putType BsonSymbol{} = putDataType DataSymbol
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putType BsonJSCodeWScope{} = putDataType DataJSCodeWScope
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putType BsonInt32 {} = putDataType DataInt
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putType BsonInt64 {} = putDataType DataLong
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-- putType = putDataType DataTimestamp
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putType BsonMinKey = putDataType DataMinKey
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putType BsonMaxKey = putDataType DataMaxKey
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putVal :: BsonValue -> Put
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putVal (BsonDouble d) = putFloat64le d
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putVal (BsonString s) = putStrSz s
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putVal (BsonDoc o) = putObj o
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putVal (BsonArray es) = putOutterObj bs
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where bs = runPut $ forM_ (List.zip [(0::Int) .. ] es) $ \(i, e) ->
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putType e >> putS (L8.fromString $ show i) >> putVal e
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putVal (BsonBinary t bs) = do
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putI32 $ fromIntegral $ (if t == BSTByteArray then 4 else 0) + L.length bs
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putI8 $ fromBinarySubType t
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when (t == BSTByteArray) $ putI32 $ fromIntegral $ L.length bs
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putLazyByteString bs
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putVal BsonUndefined = putNothing
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putVal (BsonObjectId o) = putWord64be (fromIntegral $ o `shiftR` 32) >>
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putWord32be (fromIntegral $ o .&. 0xffffffff)
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putVal (BsonBool False) = putI8 0
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putVal (BsonBool True) = putI8 1
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putVal (BsonDate pt) = putI64 $ round $ 1000 * (realToFrac pt :: Double)
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putVal BsonNull = putNothing
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putVal (BsonRegex r opt)= do putS r
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putByteString $ pack $ List.sort opt
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putNull
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putVal (BsonJSCode c) = putStrSz c
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putVal (BsonSymbol s) = putStrSz s
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putVal (BsonJSCodeWScope q s) =
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let bytes = runPut (putStrSz q >> putObj s)
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in putI32 ((+4) $ fromIntegral $ L.length bytes) >> putLazyByteString bytes
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putVal (BsonInt32 i) = putI32 i
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putVal (BsonInt64 i) = putI64 i
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putVal BsonMinKey = putNothing
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putVal BsonMaxKey = putNothing
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putObj :: BsonDoc -> Put
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putObj obj = putOutterObj bs
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where bs = runPut $ forM_ obj $ \(k, v) -> putType v >> putS k >> putVal v
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putOutterObj :: L.ByteString -> Put
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putOutterObj bytes = do
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-- the length prefix and null term are included in the length
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putI32 $ fromIntegral $ 4 + 1 + L.length bytes
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putLazyByteString bytes
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putNull
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putDataType :: DataType -> Put
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putDataType = putI8 . fromDataType
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class BsonDocConv a where
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-- | Convert a BsonDoc into another form such as a Map or a tuple
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-- list with String keys.
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fromBsonDoc :: BsonDoc -> a
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-- | Convert a Map or a tuple list with String keys into a BsonDoc.
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toBsonDoc :: a -> BsonDoc
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instance BsonDocConv [(L8.ByteString, BsonValue)] where
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fromBsonDoc = id
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toBsonDoc = id
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instance BsonDocConv [(String, BsonValue)] where
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fromBsonDoc = List.map $ Arrow.first L8.toString
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toBsonDoc = List.map $ Arrow.first L8.fromString
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instance BsonDocConv (Map.Map L8.ByteString BsonValue) where
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fromBsonDoc = Map.fromList
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toBsonDoc = Map.toList
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instance BsonDocConv (Map.Map String BsonValue) where
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fromBsonDoc = Map.fromList . fromBsonDoc
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toBsonDoc = toBsonDoc . Map.toList
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data BsonUnsupportedConversion = BsonUnsupportedConversion
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deriving (Eq, Show, Read)
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bsonUnsupportedConversion :: TyCon
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bsonUnsupportedConversion =
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mkTyCon "Database.MongoDB.BSON.BsonUnsupportedConversion "
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instance Typeable BsonUnsupportedConversion where
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typeOf _ = mkTyConApp bsonUnsupportedConversion []
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instance Exception BsonUnsupportedConversion
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throwUnsupConv :: a
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throwUnsupConv = throw BsonUnsupportedConversion
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class BsonConv a where
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-- | Convert a native Haskell type into a BsonValue.
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toBson :: a -> BsonValue
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-- | Convert a BsonValue into a native Haskell type.
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fromBson :: BsonValue -> a
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instance BsonConv Double where
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toBson = BsonDouble
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fromBson (BsonDouble d) = d
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fromBson _ = throwUnsupConv
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instance BsonConv Float where
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toBson = BsonDouble . realToFrac
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fromBson (BsonDouble d) = realToFrac d
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fromBson _ = throwUnsupConv
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instance BsonConv L8.ByteString where
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toBson = BsonString
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fromBson (BsonString s) = s
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fromBson _ = throwUnsupConv
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instance BsonConv String where
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toBson = BsonString . L8.fromString
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fromBson (BsonString s) = L8.toString s
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fromBson _ = throwUnsupConv
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instance BsonConv S8.ByteString where
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toBson bs = BsonString $ L.fromChunks [bs]
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fromBson (BsonString s) = C8.concat $ L.toChunks s
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fromBson _ = throwUnsupConv
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instance BsonConv BsonDoc where
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toBson = BsonDoc
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fromBson (BsonDoc d) = d
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fromBson _ = throwUnsupConv
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instance BsonConv [(String, BsonValue)] where
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toBson = toBson . toBsonDoc
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fromBson (BsonDoc d) = fromBsonDoc d
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fromBson _ = throwUnsupConv
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instance BsonConv (Map.Map L8.ByteString BsonValue) where
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toBson = toBson . toBsonDoc
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fromBson (BsonDoc d) = fromBsonDoc d
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fromBson _ = throwUnsupConv
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instance BsonConv (Map.Map String BsonValue) where
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toBson = toBson . toBsonDoc
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fromBson (BsonDoc d) = fromBsonDoc d
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fromBson _ = throwUnsupConv
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instance BsonConv POSIXTime where
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toBson = BsonDate
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fromBson (BsonDate d) = d
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||||
fromBson _ = throwUnsupConv
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instance BsonConv Bool where
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toBson = BsonBool
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fromBson (BsonBool b) = b
|
||||
fromBson _ = throwUnsupConv
|
||||
|
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instance BsonConv Int where
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||||
toBson i | i >= fromIntegral (minBound::Int32) &&
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||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
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||||
| otherwise = BsonInt64 $ fromIntegral i
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||||
fromBson (BsonInt32 i) = fromIntegral i
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||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
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||||
|
||||
instance BsonConv Int8 where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv Int16 where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv Int32 where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv Int64 where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv Integer where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv Word where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv Word8 where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv Word16 where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv Word32 where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv Word64 where
|
||||
toBson i | i >= fromIntegral (minBound::Int32) &&
|
||||
i <= fromIntegral (maxBound::Int32) = BsonInt32 $ fromIntegral i
|
||||
| otherwise = BsonInt64 $ fromIntegral i
|
||||
fromBson (BsonInt32 i) = fromIntegral i
|
||||
fromBson (BsonInt64 i) = fromIntegral i
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Double] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Float] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Int] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Int8] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Int16] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Int32] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Int64] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Integer] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Word] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Word8] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Word16] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Word32] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Word64] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [Bool] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [POSIXTime] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [String] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [L8.ByteString] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [S8.ByteString] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance BsonConv [BsonDoc] where
|
||||
toBson = BsonArray . List.map toBson
|
||||
fromBson (BsonArray ss) = List.map fromBson ss
|
||||
fromBson _ = throwUnsupConv
|
||||
|
||||
instance (BsonConv a) => BsonConv (Maybe a) where
|
||||
toBson Nothing = BsonNull
|
||||
toBson (Just a) = toBson a
|
||||
fromBson BsonNull = Nothing
|
||||
fromBson a = Just $ fromBson a
|
||||
|
|
@ -1,83 +0,0 @@
|
|||
{-
|
||||
|
||||
Copyright (C) 2010 Scott R Parish <srp@srparish.net>
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining
|
||||
a copy of this software and associated documentation files (the
|
||||
"Software"), to deal in the Software without restriction, including
|
||||
without limitation the rights to use, copy, modify, merge, publish,
|
||||
distribute, sublicense, and/or sell copies of the Software, and to
|
||||
permit persons to whom the Software is furnished to do so, subject to
|
||||
the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
||||
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
||||
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
||||
-}
|
||||
|
||||
module Database.MongoDB.Util
|
||||
(
|
||||
putI8, putI16, putI32, putI64, putNothing, putNull, putS,
|
||||
getI8, getI32, getI64, getC, getS, getNull, putStrSz,
|
||||
)
|
||||
where
|
||||
import Control.Exception (assert)
|
||||
import Control.Monad
|
||||
import Data.Binary
|
||||
import Data.Binary.Get
|
||||
import Data.Binary.Put
|
||||
import Data.ByteString.Char8
|
||||
import qualified Data.ByteString.Lazy as L
|
||||
import qualified Data.ByteString.Lazy.UTF8 as L8
|
||||
import Data.Char (chr)
|
||||
import Data.Int
|
||||
|
||||
getC :: Get Char
|
||||
getC = liftM chr getI8
|
||||
|
||||
getI8 :: (Integral a) => Get a
|
||||
getI8 = liftM fromIntegral getWord8
|
||||
|
||||
getI32 :: Get Int32
|
||||
getI32 = liftM fromIntegral getWord32le
|
||||
|
||||
getI64 :: Get Int64
|
||||
getI64 = liftM fromIntegral getWord64le
|
||||
|
||||
getS :: Get (Integer, L8.ByteString)
|
||||
getS = getLazyByteStringNul >>= \s -> return (fromIntegral $ L.length s + 1, s)
|
||||
|
||||
getNull :: Get ()
|
||||
getNull = do {c <- getC; assert (c == '\0') $ return ()}
|
||||
|
||||
putI8 :: Int8 -> Put
|
||||
putI8 = putWord8 . fromIntegral
|
||||
|
||||
putI16 :: Int16 -> Put
|
||||
putI16 = putWord16le . fromIntegral
|
||||
|
||||
putI32 :: Int32 -> Put
|
||||
putI32 = putWord32le . fromIntegral
|
||||
|
||||
putI64 :: Int64 -> Put
|
||||
putI64 = putWord64le . fromIntegral
|
||||
|
||||
putNothing :: Put
|
||||
putNothing = putByteString $ pack ""
|
||||
|
||||
putNull :: Put
|
||||
putNull = putI8 0
|
||||
|
||||
putS :: L8.ByteString -> Put
|
||||
putS s = putLazyByteString s >> putNull
|
||||
|
||||
putStrSz :: L8.ByteString -> Put
|
||||
putStrSz s = putI32 (fromIntegral $ 1 + L.length s) >> putS s
|
||||
Loading…
Reference in a new issue