VtUtils.IO

IO utilities

Documentation

data IOWithFileException

Exception for ioWithFileBytes and ioWithFileText functions

Constructors

IOWithFileException

Fields

• filePath :: Text

  Specified path

• exception :: SomeException

  Exception record

Instances

Show IOWithFileException

Defined in VtUtils.IO

Methods

showsPrec :: Int -> IOWithFileException -> ShowS

show :: IOWithFileException -> String

showList :: [IOWithFileException] -> ShowS

Exception IOWithFileException

Defined in VtUtils.IO

Methods

toException :: IOWithFileException -> SomeException

fromException :: SomeException -> Maybe IOWithFileException

displayException :: IOWithFileException -> String

ioWithFileBytes :: Text -> (ByteString -> IO a) -> IO a

Reads contents of a specified file as a lazy ByteString (with streaming) and provides it to the specified callback

Throws IOWithFileBytesException if specified file cannot be read

Arguments:

• path :: Text: path to file
• fun :: (Data.ByteString.Lazy.ByteString -> IO a): callback to process the file data

Return value: Result of the callback invocation

ioWithFileText :: Text -> (Text -> IO a) -> IO a

Reads contents of a specified file as a lazy Text (with streaming) and provides it to the specified callback

File contents are decoded as UTF-8

Throws IOWithFileBytesException if specified file cannot be read

Arguments:

• path :: Text: path to file
• fun :: (Data.Text.Lazy.Text -> IO a): callback to process the file data

Return value: Result of the callback invocation