70 lines
2.3 KiB
Haskell
Executable File
70 lines
2.3 KiB
Haskell
Executable File
{-# LANGUAGE NoOverloadedStrings #-} -- prevent trouble if turned on in ghci
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{-# LANGUAGE TemplateHaskell #-}
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module Hledger.Cli.Commands.Checkdates (
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checkdatesmode
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,checkdates
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) where
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import Hledger
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import Hledger.Cli.CliOptions
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import System.Console.CmdArgs.Explicit
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import System.Exit
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import Text.Printf
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checkdatesmode :: Mode RawOpts
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checkdatesmode = hledgerCommandMode
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$(embedFileRelative "Hledger/Cli/Commands/Checkdates.txt")
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[flagNone ["strict"] (setboolopt "strict") "makes date comparing strict"]
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[generalflagsgroup1]
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hiddenflags
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([], Just $ argsFlag "[QUERY]")
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checkdates :: CliOpts -> Journal -> IO ()
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checkdates CliOpts{rawopts_=rawopts,reportopts_=ropts} j = do
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let ropts_ = ropts{accountlistmode_=ALFlat}
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let ts = filter (query_ ropts_ `matchesTransaction`) $
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jtxns $ journalSelectingAmountFromOpts ropts j
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let strict = boolopt "strict" rawopts
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let date = transactionDateFn ropts
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let compare a b =
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if strict
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then date a < date b
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else date a <= date b
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case checkTransactions compare ts of
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FoldAcc{fa_previous=Nothing} -> putStrLn "ok (empty journal)" >> exitSuccess
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FoldAcc{fa_error=Nothing} -> putStrLn "ok" >> exitSuccess
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FoldAcc{fa_error=Just error, fa_previous=Just previous} ->
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(putStrLn $ printf ("ERROR: transaction out of%s date order"
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++ "\nPrevious date: %s"
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++ "\nDate: %s"
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++ "\nLocation: %s"
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++ "\nTransaction:\n\n%s")
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(if strict then " STRICT" else "")
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(show $ date previous)
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(show $ date error)
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(show $ tsourcepos error)
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(showTransaction error)) >> exitFailure
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data FoldAcc a b = FoldAcc
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{ fa_error :: Maybe a
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, fa_previous :: Maybe b
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}
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foldWhile :: (a -> FoldAcc a b -> FoldAcc a b) -> FoldAcc a b -> [a] -> FoldAcc a b
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foldWhile _ acc [] = acc
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foldWhile fold acc (a:as) =
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case fold a acc of
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acc@FoldAcc{fa_error=Just _} -> acc
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acc -> foldWhile fold acc as
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checkTransactions :: (Transaction -> Transaction -> Bool)
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-> [Transaction] -> FoldAcc Transaction Transaction
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checkTransactions compare = foldWhile f FoldAcc{fa_error=Nothing, fa_previous=Nothing}
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where
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f current acc@FoldAcc{fa_previous=Nothing} = acc{fa_previous=Just current}
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f current acc@FoldAcc{fa_previous=Just previous} =
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if compare previous current
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then acc{fa_previous=Just current}
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else acc{fa_error=Just current}
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