Conversion of Text to and from CP437

Some devices such as receipt printers require text encoded in CP437. This library can help convert regular UTF symbols to and from this format. See https://en.wikipedia.org/wiki/Code_page_437

text-cp437

Basic mapping of cp437 bytes to UTF and back.

• Data.Text.CP437 offers mapping that maps control characters to control characters.
• Data.Text.CP437.Graphical maps control characters to old school pictures like ♪.

textToCp437 :: Text -> ByteString

Given a string of text, produce a bytestring containing valid CP-437 encoded data.

If any UTF symbols are used that occur in CP437 they will be translated.

cp437ToText :: ByteString -> Text

Given a ByteString that is encoded with CP-437, will decode to a UTF Text, with all symbols converted.

utfToByte :: Char -> Word8

Convert a single unicode character to a CP-437 byte.

byteToUtf :: Word8 -> Char

Convert a single byte into a unicode character.