128 lines
		
	
	
		
			5.7 KiB
		
	
	
	
		
			Haskell
		
	
	
	
	
	
			
		
		
	
	
			128 lines
		
	
	
		
			5.7 KiB
		
	
	
	
		
			Haskell
		
	
	
	
	
	
{-|
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A 'RawLedger' is a parsed ledger file. We call it raw to distinguish from
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the cached 'Ledger'.
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-}
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module Ledger.RawLedger
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where
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import qualified Data.Map as Map
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import Ledger.Utils
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import Ledger.Types
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import Ledger.AccountName
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import Ledger.Amount
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import Ledger.Entry
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import Ledger.Transaction
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import Ledger.RawTransaction
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instance Show RawLedger where
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    show l = printf "RawLedger with %d entries, %d accounts: %s"
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             ((length $ entries l) +
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              (length $ modifier_entries l) +
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              (length $ periodic_entries l))
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             (length accounts)
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             (show accounts)
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             -- ++ (show $ rawLedgerTransactions l)
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             where accounts = flatten $ rawLedgerAccountNameTree l
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rawLedgerTransactions :: RawLedger -> [Transaction]
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rawLedgerTransactions = txnsof . entries
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    where txnsof es = concat $ map flattenEntry $ zip es [1..]
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rawLedgerAccountNamesUsed :: RawLedger -> [AccountName]
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rawLedgerAccountNamesUsed = accountNamesFromTransactions . rawLedgerTransactions
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rawLedgerAccountNames :: RawLedger -> [AccountName]
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rawLedgerAccountNames = sort . expandAccountNames . rawLedgerAccountNamesUsed
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rawLedgerAccountNameTree :: RawLedger -> Tree AccountName
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rawLedgerAccountNameTree l = accountNameTreeFrom $ rawLedgerAccountNames l
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-- | Remove ledger entries we are not interested in.
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-- Keep only those which fall between the begin and end dates, and match
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-- the description pattern, and are cleared or real if those options are active.
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filterRawLedger :: DateSpan -> [String] -> Bool -> Bool -> RawLedger -> RawLedger
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filterRawLedger span pats clearedonly realonly = 
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    filterRawLedgerTransactionsByRealness realonly .
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    filterRawLedgerEntriesByClearedStatus clearedonly .
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    filterRawLedgerEntriesByDate span .
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    filterRawLedgerEntriesByDescription pats
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-- | Keep only entries whose description matches the description patterns.
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filterRawLedgerEntriesByDescription :: [String] -> RawLedger -> RawLedger
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filterRawLedgerEntriesByDescription pats (RawLedger ms ps es f) = 
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    RawLedger ms ps (filter matchdesc es) f
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    where matchdesc = matchpats pats . edescription
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-- | Keep only entries which fall between begin and end dates. 
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-- We include entries on the begin date and exclude entries on the end
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-- date, like ledger.  An empty date string means no restriction.
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filterRawLedgerEntriesByDate :: DateSpan -> RawLedger -> RawLedger
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filterRawLedgerEntriesByDate (DateSpan begin end) (RawLedger ms ps es f) = 
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    RawLedger ms ps (filter matchdate es) f
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    where 
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      matchdate e = (maybe True (edate e>=) begin) && (maybe True (edate e<) end)
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-- | Keep only entries with cleared status, if the flag is true, otherwise
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-- do no filtering.
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filterRawLedgerEntriesByClearedStatus :: Bool -> RawLedger -> RawLedger
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filterRawLedgerEntriesByClearedStatus False l = l
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filterRawLedgerEntriesByClearedStatus True  (RawLedger ms ps es f) =
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    RawLedger ms ps (filter estatus es) f
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-- | Strip out any virtual transactions, if the flag is true, otherwise do
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-- no filtering.
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filterRawLedgerTransactionsByRealness :: Bool -> RawLedger -> RawLedger
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filterRawLedgerTransactionsByRealness False l = l
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filterRawLedgerTransactionsByRealness True (RawLedger ms ps es f) =
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    RawLedger ms ps (map filtertxns es) f
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    where filtertxns e@Entry{etransactions=ts} = e{etransactions=filter isReal ts}
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-- | Keep only entries which affect accounts matched by the account patterns.
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filterRawLedgerEntriesByAccount :: [String] -> RawLedger -> RawLedger
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filterRawLedgerEntriesByAccount apats (RawLedger ms ps es f) =
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    RawLedger ms ps (filter (any (matchpats apats . taccount) . etransactions) es) f
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-- | Give all a ledger's amounts their canonical display settings.  That
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-- is, in each commodity, amounts will use the display settings of the
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-- first amount detected, and the greatest precision of the amounts
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-- detected. Also, amounts are converted to cost basis if that flag is
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-- active.
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canonicaliseAmounts :: Bool -> RawLedger -> RawLedger
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canonicaliseAmounts costbasis l@(RawLedger ms ps es f) = RawLedger ms ps (map fixEntryAmounts es) f
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    where 
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      fixEntryAmounts (Entry d s c de co ts pr) = Entry d s c de co (map fixRawTransactionAmounts ts) pr
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      fixRawTransactionAmounts (RawTransaction ac a c t) = RawTransaction ac (fixMixedAmount a) c t
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      fixMixedAmount (Mixed as) = Mixed $ map fixAmount as
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      fixAmount | costbasis = fixcommodity . costOfAmount
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                | otherwise = fixcommodity
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      fixcommodity a = a{commodity=canonicalcommodity $ commodity a}
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      canonicalcommodity c = (firstoccurrenceof c){precision=maxprecision c}
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          where
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            firstoccurrenceof c = head $ rawLedgerCommoditiesWithSymbol l (symbol c)
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            maxprecision c = maximum $ map precision $ rawLedgerCommoditiesWithSymbol l (symbol c)
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-- | Get all amount commodities with a given symbol, in the order parsed.
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-- Must be called with a good symbol or it will fail.
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rawLedgerCommoditiesWithSymbol :: RawLedger -> String -> [Commodity]
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rawLedgerCommoditiesWithSymbol l s = 
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    fromMaybe (error $ "no such commodity "++s) (Map.lookup s map)
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    where
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      map = Map.fromList [(symbol $ head cs,cs) | cs <- groupBy same $ rawLedgerCommodities l]
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      same c1 c2 = symbol c1 == symbol c2
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-- | Get just the ammount commodities from a ledger, in the order parsed.
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rawLedgerCommodities :: RawLedger -> [Commodity]
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rawLedgerCommodities = map commodity . concatMap amounts . rawLedgerAmounts
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-- | Get just the amounts from a ledger, in the order parsed.
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rawLedgerAmounts :: RawLedger -> [MixedAmount]
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rawLedgerAmounts = map amount . rawLedgerTransactions
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-- | Get just the amount precisions from a ledger, in the order parsed.
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rawLedgerPrecisions :: RawLedger -> [Int]
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rawLedgerPrecisions = map precision . rawLedgerCommodities
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