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Data.Text.Lazy.IO | Portability | GHC | Stability | experimental | Maintainer | bos@serpentine.com |
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Description |
Efficient locale-sensitive support for lazy text I/O.
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Synopsis |
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Locale support
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Note: The behaviour of functions in this module depends on the
version of GHC you are using.
Beginning with GHC 6.12, text I/O is performed using the system or
handle's current locale and line ending conventions.
Under GHC 6.10 and earlier, the system I/O libraries /do not
support locale-sensitive I\O or line ending conversion. On these
versions of GHC, functions in this library all use UTF-8. What
does this mean in practice?
- All data that is read will be decoded as UTF-8.
- Before data is written, it is first encoded as UTF-8.
- On both reading and writing, the platform's native newline
conversion is performed.
If you must use a non-UTF-8 locale on an older version of GHC, you
will have to perform the transcoding yourself, e.g. as follows:
import qualified Data.ByteString.Lazy as B
import Data.Text.Lazy (Text)
import Data.Text.Lazy.Encoding (encodeUtf16)
putStr_Utf16LE :: Text -> IO ()
putStr_Utf16LE t = B.putStr (encodeUtf16LE t)
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Read a file and return its contents as a string. The file is
read lazily, as with getContents.
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Write a string to a file. The file is truncated to zero length
before writing begins.
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Write a string the end of a file.
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Operations on handles
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Lazily read the remaining contents of a Handle. The Handle
will be closed after the read completes, or on error.
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Read a single line from a handle.
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Write a string to a handle.
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Write a string to a handle, followed by a newline.
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Special cases for standard input and output
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The interact function takes a function of type Text -> Text
as its argument. The entire input from the standard input device is
passed (lazily) to this function as its argument, and the resulting
string is output on the standard output device.
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Lazily read all user input on stdin as a single string.
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Read a single line of user input from stdin.
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Write a string to stdout.
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Write a string to stdout, followed by a newline.
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Produced by Haddock version 2.6.0 |