Data.Bytes.Text.AsciiExt · byteslice-0.2.15.0

Line-Oriented IO

2 declarations

valuehFoldLines :: Handle -> a -> (a -> Bytes -> IO a) -> IO a

Perform an action on each line of the input, threading state through the computation. If you do not need to keep a state, see hForLines_.

Lines are extracted with with hGetLine, which does not document its detection algorithm. As of writing (bytestring v0.11.1.0), lines are delimited by a single n character (UNIX-style, as all things should be).

valuehForLines_ :: Handle -> (Bytes -> IO a) -> IO ()

#

Perform an action on each line of the input, discarding results. To maintain a running state, see hFoldLines.

Lines are extracted with with hGetLine, which does not document its detection algorithm. As of writing (bytestring v0.11.1.0), lines are delimited by a single n character (UNIX-style, as all things should be).

Standard Handles

valueforLines_ :: (Bytes -> IO a) -> IO ()

#

hForLines_ over stdin

valuefoldLines :: a -> (a -> Bytes -> IO a) -> IO a

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hFoldLines over stdin

Predicates

1 declaration

valueanyEq :: Char -> Bytes -> Bool

#

Throws an exception the Char argument is non-ascii.

Filtering

4 declarations

valuetakeWhileNotEq :: Char -> Bytes -> Bytes

#

Throws an exception the Char argument is non-ascii.

valuedropWhileNotEq :: Char -> Bytes -> Bytes

#

Throws an exception the Char argument is non-ascii.

valuetakeWhileEndNotEq :: Char -> Bytes -> Bytes

#

Throws an exception the Char argument is non-ascii.

valuedropWhileEndEq :: Char -> Bytes -> Bytes

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Throws an exception the Char argument is non-ascii.

Splitting

0 declarations

Fixed from Beginning

valuesplit1 :: Char -> Bytes -> Maybe (Bytes, Bytes)

#

Throws an exception the Char argument is non-ascii.

valuesplitTetragram1

:: Char
-> Char
-> Char
-> Char
-> Bytes
-> Maybe (Bytes, Bytes)

#

Throws an exception if any of the Char arguments are non-ascii.

valuesplit2 :: Char -> Bytes -> Maybe (Bytes, Bytes, Bytes)

#

Throws an exception the Char argument is non-ascii.

valuesplit3 :: Char -> Bytes -> Maybe (Bytes, Bytes, Bytes, Bytes)

#

Throws an exception the Char argument is non-ascii.

valuesplit4 :: Char -> Bytes -> Maybe (Bytes, Bytes, Bytes, Bytes, Bytes)

#

Throws an exception the Char argument is non-ascii.

Text Manipulation

1 declaration

valuetoLowerU :: Bytes -> ByteArray

#

O(n) Convert ASCII letters to lowercase. This adds 0x20 to bytes in the range [0x41,0x5A] (A-Z ⇒ a-z) and leaves all other bytes alone. Unconditionally copies the bytes.