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Add servant-cassava.

0.4
Julian K. Arni 6 years ago
parent
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9cea7902df
  1. 30
      servant-cassava/LICENSE
  2. 2
      servant-cassava/Setup.hs
  3. 29
      servant-cassava/servant-cassava.cabal
  4. 88
      servant-cassava/src/Servant/CSV/Cassava.hs
  5. 1
      sources.txt

30
servant-cassava/LICENSE

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Copyright (c) 2015, Julian K. Arni
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of Julian K. Arni nor the names of other
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

2
servant-cassava/Setup.hs

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import Distribution.Simple
main = defaultMain

29
servant-cassava/servant-cassava.cabal

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-- Initial servant-cassava.cabal generated by cabal init. For further
-- documentation, see http://haskell.org/cabal/users-guide/
name: servant-cassava
version: 0.4.4.2
synopsis: Servant CSV content-type for cassava
-- description:
homepage: http://haskell-servant.github.io/
license: BSD3
license-file: LICENSE
author: Julian K. Arni
maintainer: jkarni@gmail.com
-- copyright:
-- category:
build-type: Simple
-- extra-source-files:
cabal-version: >=1.10
library
exposed-modules: Servant.CSV.Cassava
-- other-modules:
-- other-extensions:
build-depends: base >=4.6 && <5
, cassava >0.4 && <0.5
, servant ==0.5.*
, http-media
, vector
hs-source-dirs: src
default-language: Haskell2010

88
servant-cassava/src/Servant/CSV/Cassava.hs

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{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}
-- | A @CSV@ empty datatype with `MimeRender` and `MimeUnrender` instances for
-- @cassava@'s encoding and decoding classes.
--
-- >>> type Eg = Get '[(CSV', MyEncodeOptions)] [(Int, String)]
--
-- Default encoding and decoding options are also provided, along with the
-- @CSV@ type synonym that uses them.
--
-- >>> type EgDefault = Get '[CSV] [(Int, String)]
module Servant.CSV.Cassava where
import Data.Csv
import Data.Proxy (Proxy (..))
import Data.Typeable (Typeable)
import Data.Vector (Vector)
import GHC.Generics (Generic)
import qualified Network.HTTP.Media as M
import Servant.API (Accept (..), MimeRender (..),
MimeUnrender (..))
data CSV' deriving (Typeable, Generic)
type CSV = (CSV', DefaultDecodeOpts)
-- | @text/csv;charset=utf-8@
instance Accept (CSV', a) where
contentType _ = "text" M.// "csv" M./: ("charset", "utf-8")
-- * Encoding
-- ** Instances
-- | Encode with 'encodeByNameWith'. The 'Header' param is used for determining
-- the order of headers and fields.
instance ( ToNamedRecord a, EncodeOpts opt
) => MimeRender (CSV', opt) (Header, [a]) where
mimeRender _ (hdr, vals) = encodeByNameWith (encodeOpts p) hdr vals
where p = Proxy :: Proxy opt
-- | Encode with 'encodeDefaultOrderedByNameWith'
instance ( DefaultOrdered a, ToNamedRecord a, EncodeOpts opt
) => MimeRender (CSV', opt) [a] where
mimeRender _ = encodeDefaultOrderedByNameWith (encodeOpts p)
where p = Proxy :: Proxy opt
-- ** Encode Options
class EncodeOpts a where
encodeOpts :: Proxy a -> EncodeOptions
data DefaultEncodeOpts deriving (Typeable, Generic)
instance EncodeOpts DefaultEncodeOpts where
encodeOpts _ = defaultEncodeOptions
-- * Decoding
-- ** Instances
-- | Decode with 'decodeByNameWith'
instance ( FromNamedRecord a, DecodeOpts opt
) => MimeUnrender (CSV', opt) (Header, Vector a) where
mimeUnrender _ = decodeByNameWith (decodeOpts p)
where p = Proxy :: Proxy opt
-- | Decode with 'decodeWith'. Assumes data has headers, which are stripped.
instance ( FromRecord a, DecodeOpts opt
) => MimeUnrender (CSV', opt) (Vector a) where
mimeUnrender _ = decodeWith (decodeOpts p) HasHeader
where p = Proxy :: Proxy opt
-- ** Decode Options
class DecodeOpts a where
decodeOpts :: Proxy a -> DecodeOptions
data DefaultDecodeOpts deriving (Typeable, Generic)
instance DecodeOpts DefaultDecodeOpts where
decodeOpts _ = defaultDecodeOptions

1
sources.txt

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servant
servant-cassava
servant-client
servant-docs
servant-jquery

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