41 lines
1.2 KiB
Haskell
41 lines
1.2 KiB
Haskell
{-|
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A 'RawTransaction' represents a single transaction line within a ledger
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entry. We call it raw to distinguish from the cached 'Transaction'.
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-}
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module Ledger.RawTransaction
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where
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import Ledger.Utils
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import Ledger.Types
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import Ledger.Amount
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instance Show RawTransaction where show = showLedgerTransaction
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showLedgerTransaction :: RawTransaction -> String
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showLedgerTransaction t = (showaccountname $ taccount t) ++ " " ++ (showamount $ tamount t)
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where
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showaccountname = printf "%-22s" . elideRight 22
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showamount = printf "%12s" . showAmountOrZero
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elideRight width s =
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case length s > width of
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True -> take (width - 2) s ++ ".."
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False -> s
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autofillTransactions :: [RawTransaction] -> [RawTransaction]
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autofillTransactions ts =
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case (length blanks) of
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0 -> ts
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1 -> map balance ts
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otherwise -> error "too many blank transactions in this entry"
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where
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(normals, blanks) = partition isnormal ts
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isnormal t = (symbol $ commodity $ tamount t) /= "AUTO"
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balance t = if isnormal t then t else t{tamount = -(sumLedgerTransactions normals)}
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sumLedgerTransactions :: [RawTransaction] -> Amount
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sumLedgerTransactions = sum . map tamount
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