Safe Haskell	Safe-Inferred
Language	Haskell2010

Distribution.Utils.IOData

Contents

IOData & IODataMode type

Description

Since: 2.2.0

Synopsis

data IOData
- = IODataText String
- | IODataBinary ByteString
data IODataMode mode where
- IODataModeText :: IODataMode [Char]
- IODataModeBinary :: IODataMode ByteString
class NFData mode => KnownIODataMode mode where
- hGetIODataContents :: Handle -> IO mode
- toIOData :: mode -> IOData
- iodataMode :: IODataMode mode
withIOData :: IOData -> (forall mode. IODataMode mode -> mode -> r) -> r
null :: IOData -> Bool
hPutContents :: Handle -> IOData -> IO ()

`IOData` & `IODataMode` type

data IOData Source #

Represents either textual or binary data passed via I/O functions which support binary/text mode

Since: 2.2

Constructors

IODataText String

How Text gets encoded is usually locale-dependent.

IODataBinary ByteString

Raw binary which gets read/written in binary mode.

Instances

Instances details

NFData IOData Source #

Instance details

Defined in Distribution.Utils.IOData

Methods

rnf :: IOData -> () #

data IODataMode mode where Source #

Phantom-typed GADT representation of the mode of IOData , containing no other data.

Since: 3.2

Constructors

IODataModeText :: IODataMode [Char]

IODataModeBinary :: IODataMode ByteString

class NFData mode => KnownIODataMode mode where Source #

Since: 2.2

Methods

hGetIODataContents :: Handle -> IO mode Source #

IOData Wrapper for hGetContents

Note: This operation uses lazy I/O. Use NFData to force all data to be read and consequently the internal file handle to be closed.

toIOData :: mode -> IOData Source #

iodataMode :: IODataMode mode Source #

Instances

Instances details

KnownIODataMode ByteString Source #

Instance details

Defined in Distribution.Utils.IOData

Methods

hGetIODataContents :: Handle -> IO ByteString Source #

toIOData :: ByteString -> IOData Source #

iodataMode :: IODataMode ByteString Source #

a ~ Char => KnownIODataMode [a] Source #

Instance details

Defined in Distribution.Utils.IOData

Methods

hGetIODataContents :: Handle -> IO [a] Source #

toIOData :: [a] -> IOData Source #

iodataMode :: IODataMode [a] Source #

withIOData :: IOData -> (forall mode. IODataMode mode -> mode -> r) -> r Source #

Applies a function polymorphic over IODataMode to an IOData value.

null :: IOData -> Bool Source #

Test whether IOData is empty

hPutContents :: Handle -> IOData -> IO () Source #

IOData Wrapper for hPutStr and hClose

This is the dual operation to hGetIODataContents , and consequently the handle is closed with hClose .

Note: this performs lazy-IO.

Since: 2.2

IOData & IODataMode type

Instances

Instances

`IOData` & `IODataMode` type