implemented encodeCSV and encodeRawCSV

master
Jonathan Lamothe 2022-04-24 16:04:10 -04:00
parent 3df133147f
commit 5c74085ada
2 changed files with 57 additions and 1 deletions

View File

@ -33,6 +33,8 @@ module Data.CSV.Sip (
slurpRawLabelledCSV,
-- * Conduits
-- ** Encoding
encodeCSV,
encodeRawCSV,
encodeRows,
encodeRawRows,
-- ** Decoding
@ -57,7 +59,7 @@ import Control.Monad (unless)
import Control.Monad.Trans.Class (lift)
import Control.Monad.Trans.State (StateT, evalStateT, get, gets, modify)
import qualified Data.ByteString as BS
import Data.Conduit.List (consume)
import Data.Conduit.List (consume, sourceList)
import qualified Data.Map as M
import Data.Maybe (fromMaybe)
import qualified Data.Text as T
@ -98,6 +100,22 @@ slurpRawLabelledCSV
slurpRawLabelledCSV file = runConduit $
sourceFile file .| decodeRawRows .| labelFields .|consume
-- | encode an entire CSV file
encodeCSV
:: Monad m
=> [[T.Text]]
-- ^ the data being encoded, organized into rows and fields
-> ConduitT () BS.ByteString m ()
encodeCSV csv = sourceList csv .| encodeRows
-- | encode an entire CSV file
encodeRawCSV
:: Monad m
=> [[BS.ByteString]]
-- ^ the data being encoded, organized into rows and fields
-> ConduitT () BS.ByteString m ()
encodeRawCSV csv = sourceList csv .| encodeRawRows
-- | encode a CSV stream row by row, each element in the list read
-- represents a field, with the entire list representing a row
encodeRows :: Monad m => ConduitT [T.Text] BS.ByteString m ()

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@ -33,6 +33,8 @@ import Data.CSV.Sip
spec :: Spec
spec = describe "Data.CSV.Sip" $ do
encodeCSVSpec
encodeRawCSVSpec
encodeRowsSpec
encodeRawRowsSpec
labelFieldsSpec
@ -41,6 +43,42 @@ spec = describe "Data.CSV.Sip" $ do
decodeUTF8Spec
toBytesSpec
encodeCSVSpec :: Spec
encodeCSVSpec = describe "encodeCSV" $ do
result <- BS.concat <$> runConduit
(encodeCSV input .| consume)
it ("shouldBe " ++ show expected) $
result `shouldBe` expected
where
input =
[ [ "foo", "a\"b" ]
, [ "a\rb", "a\nb" ]
]
expected = BS.concat
[ "\"foo\",\"a\"\"b\"\r\n"
, "\"a\rb\",\"a\nb\"\r\n"
]
encodeRawCSVSpec :: Spec
encodeRawCSVSpec = describe "encodeRawCSV" $ do
result <- BS.concat <$> runConduit
(encodeRawCSV input .| consume)
it ("shouldBe " ++ show expected) $
result `shouldBe` expected
where
input =
[ [ "foo", "a\"b" ]
, [ "a\rb", "a\nb" ]
]
expected = BS.concat
[ "\"foo\",\"a\"\"b\"\r\n"
, "\"a\rb\",\"a\nb\"\r\n"
]
encodeRowsSpec :: Spec
encodeRowsSpec = describe "encodeRows" $ do
result <- BS.concat <$> runConduit