Safe Haskell | None |
---|
This module allows constant-space CSV parsing.
It feeds ByteString
s into cassavas incremental CSV parser to attain true
constant-space record streaming.
- decode :: (Monad m, FromRecord a) => HasHeader -> Producer ByteString m () -> Producer (Either String a) m ()
- decodeWith :: (Monad m, FromRecord a) => DecodeOptions -> HasHeader -> Producer ByteString m () -> Producer (Either String a) m ()
- decodeByName :: (Monad m, FromNamedRecord a) => Producer ByteString m () -> Producer (Either String a) m ()
- decodeByNameWith :: (Monad m, FromNamedRecord a) => DecodeOptions -> Producer ByteString m () -> Producer (Either String a) m ()
- feedParser :: Monad m => Parser a -> Producer ByteString m () -> Producer (Either String a) m ()
- feedHeaderParser :: Monad m => HeaderParser (Parser a) -> Producer ByteString m () -> Producer (Either String a) m ()
- encode :: (Monad m, ToRecord a) => Pipe a ByteString m r
- encodeWith :: (Monad m, ToRecord a) => EncodeOptions -> Pipe a ByteString m r
- encodeByName :: (Monad m, ToNamedRecord a) => Header -> Pipe a ByteString m r
- encodeByNameWith :: (Monad m, ToNamedRecord a) => EncodeOptions -> Header -> Pipe a ByteString m r
- module Data.Csv
- data HasHeader
Example
Decode records
decode :: (Monad m, FromRecord a) => HasHeader -> Producer ByteString m () -> Producer (Either String a) m ()Source
Equivalent to
.
decodeWith
defaultDecodeOptions
decodeWith :: (Monad m, FromRecord a) => DecodeOptions -> HasHeader -> Producer ByteString m () -> Producer (Either String a) m ()Source
Create a Producer
that takes a ByteString
Producer
as input,
producing either errors or FromRecord
s.
Decode named records
decodeByName :: (Monad m, FromNamedRecord a) => Producer ByteString m () -> Producer (Either String a) m ()Source
Equivalent to
.
decodeByNameWith
defaultDecodeOptions
decodeByNameWith :: (Monad m, FromNamedRecord a) => DecodeOptions -> Producer ByteString m () -> Producer (Either String a) m ()Source
Create a Producer
that takes a ByteString
Producer
as input,
producing either errors or FromNamedRecord
s.
Decode parsed records
feedParser :: Monad m => Parser a -> Producer ByteString m () -> Producer (Either String a) m ()Source
Create a Record Producer
by feeding ByteString
s into a Parser
feedHeaderParser :: Monad m => HeaderParser (Parser a) -> Producer ByteString m () -> Producer (Either String a) m ()Source
Create a NamedRecord Producer
by feeding ByteString
s into a Parser
Encode records
encode :: (Monad m, ToRecord a) => Pipe a ByteString m rSource
Encode records as strict ByteString
s
encodeWith :: (Monad m, ToRecord a) => EncodeOptions -> Pipe a ByteString m rSource
Encode records as strict ByteString
s
Encode named records
encodeByName :: (Monad m, ToNamedRecord a) => Header -> Pipe a ByteString m rSource
Encode named records as strict ByteString
s
encodeByNameWith :: (Monad m, ToNamedRecord a) => EncodeOptions -> Header -> Pipe a ByteString m rSource
Encode named records as strict ByteString
s
Re-exports
Data.Csv re-exports common types and operators:
-
FromRecord
,FromNamedRecord
,ToRecord
,ToNamedRecord
-
ToField
,FromField
-
Record
,Field
,NamedRecord
- '(.!)', '(.:)', '(.=)'
-
DecodeOptions
,defaultDecodeOptions
module Data.Csv