Copyright	© 2016 Stack Builders
License	MIT
Maintainer	Mark Karpov <markkarpov@openmailbox.org>
Stability	experimental
Portability	portable
Safe Haskell	None
Language	Haskell2010

Data.Csv.Parser.Megaparsec

Description

A CSV parser. The parser here is RFC 4180 compliant, with the following extensions:

Non-escaped fields may contain any characters except double-quotes, commas (or generally delimiter characters), carriage returns, and newlines.
Escaped fields may contain any characters, but double-quotes need to be escaped.

The parser provides better error messages than the parser that comes with Cassava library, while being compatible with the rest of the library.

Synopsis

Documentation

data Cec Source #

Custom error component for CSV parsing. It allows typed reporting of conversion errors.

Constructors

CecFail String
CecIndentation Ordering Pos Pos
CecConversionError String

Instances

Eq Cec Source #
Methods (==) :: Cec -> Cec -> Bool # (/=) :: Cec -> Cec -> Bool #
Data Cec Source #
Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Cec -> c Cec # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Cec # toConstr :: Cec -> Constr # dataTypeOf :: Cec -> DataType # dataCast1 :: Typeable (* -> ) t => (forall d. Data d => c (t d)) -> Maybe (c Cec) # dataCast2 :: Typeable ( -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Cec) # gmapT :: (forall b. Data b => b -> b) -> Cec -> Cec # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Cec -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Cec -> r # gmapQ :: (forall d. Data d => d -> u) -> Cec -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Cec -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Cec -> m Cec # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Cec -> m Cec # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Cec -> m Cec #
Ord Cec Source #
Methods compare :: Cec -> Cec -> Ordering # (<) :: Cec -> Cec -> Bool # (<=) :: Cec -> Cec -> Bool # (>) :: Cec -> Cec -> Bool # (>=) :: Cec -> Cec -> Bool # max :: Cec -> Cec -> Cec # min :: Cec -> Cec -> Cec #
Read Cec Source #
Methods readsPrec :: Int -> ReadS Cec # readList :: ReadS [Cec] # readPrec :: ReadPrec Cec # readListPrec :: ReadPrec [Cec] #
Show Cec Source #
Methods showsPrec :: Int -> Cec -> ShowS # show :: Cec -> String # showList :: [Cec] -> ShowS #
ErrorComponent Cec Source #
Methods representFail :: String -> Cec # representIndentation :: Ordering -> Pos -> Pos -> Cec #
ShowErrorComponent Cec Source #
Methods showErrorComponent :: Cec -> String #

decode Source #

Arguments

:: FromRecord a
=> HasHeader	Whether the data contains header that should be skipped
-> FilePath	File name (use empty string if you have none)
-> ByteString	CSV data
-> Either (ParseError Char Cec) (Vector a)

Deserialize CSV records form a lazy ByteString. If this fails due to incomplete or invalid input, Left is returned. Equivalent to decodeWith defaultDecodeOptions.

decodeWith Source #

Arguments

:: FromRecord a
=> DecodeOptions	Decoding options
-> HasHeader	Whether the data contains header that should be skipped
-> FilePath	File name (use empty string if you have none)
-> ByteString	CSV data
-> Either (ParseError Char Cec) (Vector a)

Like decode, but lets you customize how the CSV data is parsed.

decodeByName Source #

Arguments

:: FromNamedRecord a
=> FilePath	File name (use empty string if you have none)
-> ByteString	CSV data
-> Either (ParseError Char Cec) (Header, Vector a)

Deserialize CSV records from a lazy ByteString. If this fails due to incomplete or invalid input, Left is returned. The data is assumed to be preceded by a header. Equivalent to decodeByNameWith defaultDecodeOptions.

decodeByNameWith Source #

Arguments

:: FromNamedRecord a
=> DecodeOptions	Decoding options
-> FilePath	File name (use empty string if you have none)
-> ByteString	CSV data
-> Either (ParseError Char Cec) (Header, Vector a)

Like decodeByName, but lets you customize how the CSV data is parsed.