Data.ByteString.Base64.Lens

This module contains Prism's for Base64-encoding and decoding ByteString values.

Prisms

_Base64 :: Prism' ByteString ByteString

A Prism' into the Base64 encoding of a ByteString value

>>> _Base64 # "Sun"
"U3Vu"

>>> "U3Vu" ^? _Base64
Just "Sun"

_Base64Url :: Prism' ByteString ByteString

A Prism' into the Base64-url encoding of a ByteString value

>>> _Base64Url # "Sun"
"U3Vu"

>>> "PDw_Pz8-Pg==" ^? _Base64Url
Just "<<???>>"

_Base64Unpadded :: Prism' ByteString ByteString

A Prism' into the unpadded Base64 encoding of a ByteString value

Please note that unpadded variants should only be used when assumptions about the data can be made. In particular, if the length of the input is divisible by 3, then this is a safe function to call.

>>> _Base64Unpadded # "Sun"
"U3Vu"

>>> "U3Vu" ^? _Base64Unpadded
Just "Sun"

_Base64UrlUnpadded :: Prism' ByteString ByteString

A Prism' into the Base64-url encoding of a ByteString value

Please note that unpadded variants should only be used when assumptions about the data can be made. In particular, if the length of the input is divisible by 3, then this is a safe function to call.

>>> _Base64UrlUnpadded # "<<??>>"
"PDw_Pz4-"

>>> "PDw_Pz4-" ^? _Base64UrlUnpadded
Just "<<??>>"

Patterns

pattern Base64 :: ByteString -> ByteString

Bidirectional pattern synonym for base64-encoded ByteString values.

pattern Base64Url :: ByteString -> ByteString

Bidirectional pattern synonym for base64url-encoded ByteString values.

pattern Base64Unpadded :: ByteString -> ByteString

Bidirectional pattern synonym for unpadded base64-encoded ByteString values.

pattern Base64UrlUnpadded :: ByteString -> ByteString

Bidirectional pattern synonym for unpadded base64url-encoded ByteString values.