hledger/Ledger/TimeLog.hs
2008-10-15 19:11:06 +00:00

64 lines
2.3 KiB
Haskell

{-|
A 'TimeLog' is a parsed timelog file (see timeclock.el or the command-line
version) containing zero or more 'TimeLogEntry's. It can be converted to a
'RawLedger' for querying.
-}
module Ledger.TimeLog
where
import Ledger.Utils
import Ledger.Types
import Ledger.Commodity
import Ledger.Amount
instance Show TimeLogEntry where
show t = printf "%s %s %s" (show $ tlcode t) (tldatetime t) (tlcomment t)
instance Show TimeLog where
show tl = printf "TimeLog with %d entries" $ length $ timelog_entries tl
-- | Convert a time log to a ledger.
ledgerFromTimeLog :: TimeLog -> RawLedger
ledgerFromTimeLog tl = RawLedger [] [] (entriesFromTimeLogEntries $ timelog_entries tl) ""
-- | Convert time log entries to ledger entries.
entriesFromTimeLogEntries :: [TimeLogEntry] -> [Entry]
entriesFromTimeLogEntries [] = []
entriesFromTimeLogEntries [i] = entriesFromTimeLogEntries [i, clockoutFor i]
entriesFromTimeLogEntries (i:o:rest) = [entryFromTimeLogInOut i o] ++ entriesFromTimeLogEntries rest
-- | When there is a trailing clockin entry, provide the missing clockout.
-- An entry for now is what we want but this requires IO so for now use
-- the clockin time, ie don't count the current clocked-in period.
clockoutFor :: TimeLogEntry -> TimeLogEntry
clockoutFor (TimeLogEntry _ t _) = TimeLogEntry 'o' t ""
-- | Convert a timelog clockin and clockout entry to an equivalent ledger
-- entry, representing the time expenditure. Note this entry is not balanced,
-- since we omit the \"assets:time\" transaction for simpler output.
entryFromTimeLogInOut :: TimeLogEntry -> TimeLogEntry -> Entry
entryFromTimeLogInOut i o =
Entry {
edate = indate, -- ledger uses outdate
estatus = True,
ecode = "",
edescription = "",
ecomment = "",
etransactions = txns,
epreceding_comment_lines=""
}
where
acctname = tlcomment i
indate = showdate intime
outdate = showdate outtime
showdate = formatTime defaultTimeLocale "%Y/%m/%d"
intime = parsedatetime $ tldatetime i
outtime = parsedatetime $ tldatetime o
amount = hours $ realToFrac (diffUTCTime outtime intime) / 3600
txns = [RawTransaction acctname amount ""
--,RawTransaction "assets:time" (-amount) ""
]