Headroom.Command.Readers

This module contains custom readers required by the optparse-applicative library to parse data types such as LicenseType or FileType.

Documentation

licenseReader :: ReadM (LicenseType, FileType)

Reader for tuple of LicenseType and FileType.

licenseTypeReader :: ReadM LicenseType

Reader for LicenseType.

regexReader :: ReadM Regex

Reader for Regex.

parseLicenseAndFileType :: Text -> Maybe (LicenseType, FileType)

Parses LicenseType and FileType from the input string, formatted as licenseType:fileType.

>>> parseLicenseAndFileType "bsd3:haskell"
Just (BSD3,Haskell)