Data.MBox

Reads and writes mboxrd files as per http://www.qmail.org/man/man5/mbox.html.

This module uses Lazy Text pervasively, and should be able to operate as a streaming parser. That is to say, given a lazy stream of Text, and a streaming processing function, you should be able to analyze large mbox files in constant space.

Documentation

type MBox = [Message]

data Message

Constructors

Message

Fields

• fromLine :: Text
• headers :: [Header]
• body :: Text

Instances

Read Message

Methods

readsPrec :: Int -> ReadS Message

readList :: ReadS [Message]

readPrec :: ReadPrec Message

readListPrec :: ReadPrec [Message]

Show Message

Methods

showsPrec :: Int -> Message -> ShowS

show :: Message -> String

showList :: [Message] -> ShowS

type Header = (Text, Text)

parseMBox :: Text -> MBox

Parses Text as an mbox file.

parseForward :: Message -> Message

Attempts to retrieve the contents of a forwarded message from an enclosing message.

parseDateHeader :: Text -> Maybe UTCTime

Reads a date header as a UTCTime

showMessage :: Message -> Text

Renders an individual message into Text.

showMBox :: MBox -> Text

Renders an MBox into Text

getHeader :: (Header -> Bool) -> Message -> [Text]

Return the values of headers for which predicate is True

isID :: Header -> Bool

Return True if header is a Message-ID header.

isDate :: Header -> Bool

Return True if header is a Date header.