Penny.Brenner.Util

Documentation

errExit :: String -> IO a

Print an error message and exit.

getFitAcct :: Maybe FitAcct -> IO FitAcct

Gets the FitAcct, if it was provided. If it was not provided, exit with an error message.

loadDb

Arguments

:: AllowNew

Is a new file allowed?

-> DbLocation

DB location

-> IO DbList

Loads the database from disk. If allowNew is True, then does not fail if the file was not found.

version :: Int

File version. Increment this when anything in the file format changes.

brenner :: String

readDbTuple :: ByteString -> Exceptional String DbList

saveDbTuple :: DbList -> ByteString

saveDb :: DbLocation -> DbList -> IO ()

Writes a new database to disk.

parseQty :: Amount -> Qty

Parses quantities from amounts. All amounts should be verified as having only digits, optionally followed by a point and then more digits. All these values should parse. So if there is a problem it is a programmer error. Apply error.

label :: String -> Text -> String

showPosting :: Posting -> String

Shows a Posting in human readable format.

showDbPair :: (UNumber, Posting) -> String