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|
{- Printing utilities.
-
- Copyright 2013 Raúl Benencia <rul@kalgan.cc>
-
- Licensed under the GNU GPL version 3 or higher
-
-}
module Print where
import Network.Email.Mailbox(Flag(..), Flags)
import Text.ParserCombinators.Parsec.Rfc2822(NameAddr(..))
import Data.Char ( isSpace )
import Email
import Rfc1342
nameLen = 20
ppNameAddr nas = concat $ map ppNameAddr' nas
where ppNameAddr' na = case nameAddr_name na of
Nothing -> nameAddr_addr na
Just n -> decodeField n
ppIndexNameAddr = normalizeLen nameLen . ppNameAddr
subjectLen = 90
ppSubject = decodeField
ppIndexSubject = normalizeLen subjectLen . ppSubject
ppFlags :: Flags -> String
ppFlags = map ppFlag
ppFlag :: Flag -> Char
ppFlag SEEN = 'S'
ppFlag ANSWERED = 'A'
ppFlag FLAGGED = 'F'
ppFlag DRAFT = 'D'
ppFlag FORWARDED = 'P'
ppFlag DELETED = 'T'
ppFlag (OTHERFLAG [c]) = c
ppSep = "\t"
normalizeLen len cs = if (length cs > len)
then shorten len cs
else if (length cs < len)
then fillWithSpace len cs
else cs
fillWithSpace len cs = cs ++ (take (len - length cs) . repeat $ ' ')
-- The following functions are from DynamicLog xmonad-contrib source
-- | Wrap a string in delimiters, unless it is empty.
wrap :: String -- ^ left delimiter
-> String -- ^ right delimiter
-> String -- ^ output string
-> String
wrap _ _ "" = ""
wrap l r m = l ++ m ++ r
-- | Pad a string with a leading and trailing space.
pad :: String -> String
pad = wrap " " " "
-- | Trim leading and trailing whitespace from a string.
trim :: String -> String
trim = f . f
where f = reverse . dropWhile isSpace
-- | Limit a string to a certain length, adding "..." if truncated.
shorten :: Int -> String -> String
shorten n xs | length xs < n = xs
| otherwise = take (n - length end) xs ++ end
where
end = "..."
|
