mirror of
https://github.com/simonmichael/hledger.git
synced 2024-11-10 14:16:41 +03:00
100 lines
3.6 KiB
Haskell
100 lines
3.6 KiB
Haskell
{-|
|
|
|
|
A 'Ledger' is derived from a 'Journal' by applying a filter specification
|
|
to select 'Transaction's and 'Posting's of interest. It contains the
|
|
filtered journal and knows the resulting chart of accounts, account
|
|
balances, and postings in each account.
|
|
|
|
-}
|
|
|
|
module Hledger.Data.Ledger
|
|
where
|
|
import qualified Data.Map as M
|
|
import Safe (headDef)
|
|
import Test.HUnit
|
|
import Text.Printf
|
|
|
|
import Hledger.Data.Types
|
|
import Hledger.Data.Account
|
|
import Hledger.Data.Journal
|
|
import Hledger.Data.Posting
|
|
import Hledger.Query
|
|
|
|
|
|
instance Show Ledger where
|
|
show l = printf "Ledger with %d transactions, %d accounts\n" --"%s"
|
|
(length (jtxns $ ljournal l) +
|
|
length (jmodifiertxns $ ljournal l) +
|
|
length (jperiodictxns $ ljournal l))
|
|
(length $ ledgerAccountNames l)
|
|
-- (showtree $ ledgerAccountNameTree l)
|
|
|
|
nullledger :: Ledger
|
|
nullledger = Ledger {
|
|
ljournal = nulljournal,
|
|
laccounts = []
|
|
}
|
|
|
|
-- | Filter a journal's transactions with the given query, then derive
|
|
-- a ledger containing the chart of accounts and balances. If the
|
|
-- query includes a depth limit, that will affect the this ledger's
|
|
-- journal but not the ledger's account tree.
|
|
ledgerFromJournal :: Query -> Journal -> Ledger
|
|
ledgerFromJournal q j = nullledger{ljournal=j'', laccounts=as}
|
|
where
|
|
(q',depthq) = (filterQuery (not . queryIsDepth) q, filterQuery queryIsDepth q)
|
|
j' = filterJournalAmounts (filterQuery queryIsSym q) $ -- remove amount parts which the query's sym: terms would exclude
|
|
filterJournalPostings q' j
|
|
as = accountsFromPostings $ journalPostings j'
|
|
j'' = filterJournalPostings depthq j'
|
|
|
|
-- | List a ledger's account names.
|
|
ledgerAccountNames :: Ledger -> [AccountName]
|
|
ledgerAccountNames = drop 1 . map aname . laccounts
|
|
|
|
-- | Get the named account from a ledger.
|
|
ledgerAccount :: Ledger -> AccountName -> Maybe Account
|
|
ledgerAccount l a = lookupAccount a $ laccounts l
|
|
|
|
-- | Get this ledger's root account, which is a dummy "root" account
|
|
-- above all others. This should always be first in the account list,
|
|
-- if somehow not this returns a null account.
|
|
ledgerRootAccount :: Ledger -> Account
|
|
ledgerRootAccount = headDef nullacct . laccounts
|
|
|
|
-- | List a ledger's top-level accounts (the ones below the root), in tree order.
|
|
ledgerTopAccounts :: Ledger -> [Account]
|
|
ledgerTopAccounts = asubs . head . laccounts
|
|
|
|
-- | List a ledger's bottom-level (subaccount-less) accounts, in tree order.
|
|
ledgerLeafAccounts :: Ledger -> [Account]
|
|
ledgerLeafAccounts = filter (null.asubs) . laccounts
|
|
|
|
-- | Accounts in ledger whose name matches the pattern, in tree order.
|
|
ledgerAccountsMatching :: [String] -> Ledger -> [Account]
|
|
ledgerAccountsMatching pats = filter (matchpats pats . aname) . laccounts
|
|
|
|
-- | List a ledger's postings, in the order parsed.
|
|
ledgerPostings :: Ledger -> [Posting]
|
|
ledgerPostings = journalPostings . ljournal
|
|
|
|
-- | The (fully specified) date span containing all the ledger's (filtered) transactions,
|
|
-- or DateSpan Nothing Nothing if there are none.
|
|
ledgerDateSpan :: Ledger -> DateSpan
|
|
ledgerDateSpan = postingsDateSpan . ledgerPostings
|
|
|
|
-- | All commodities used in this ledger.
|
|
ledgerCommodities :: Ledger -> [Commodity]
|
|
ledgerCommodities = M.keys . jcommoditystyles . ljournal
|
|
|
|
|
|
tests_ledgerFromJournal = [
|
|
"ledgerFromJournal" ~: do
|
|
assertEqual "" (0) (length $ ledgerPostings $ ledgerFromJournal Any nulljournal)
|
|
assertEqual "" (11) (length $ ledgerPostings $ ledgerFromJournal Any samplejournal)
|
|
assertEqual "" (6) (length $ ledgerPostings $ ledgerFromJournal (Depth 2) samplejournal)
|
|
]
|
|
|
|
tests_Hledger_Data_Ledger = TestList $
|
|
tests_ledgerFromJournal
|