hledger/hledger.hs

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#!/usr/bin/env runhaskell
{-
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hledger - ledger-compatible money management tool (& haskell study)
GPLv3, (c) Simon Michael & contributors
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A port of John Wiegley's ledger at http://newartisans.com/ledger.html
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See Types.hs for a code overview.
-}
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module Main
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where
import System
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import Text.ParserCombinators.Parsec (ParseError)
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import Options
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import Models
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import Parse
import Tests
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import Utils hiding (test)
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main :: IO ()
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main = do
(opts, (cmd:args)) <- getArgs >>= parseOptions
let pats = parsePatternArgs args
run cmd opts pats
where run cmd opts pats
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| Help `elem` opts = putStr usage
| cmd `isPrefixOf` "test" = test opts pats
| cmd `isPrefixOf` "print" = printcmd opts pats
| cmd `isPrefixOf` "register" = register opts pats
| cmd `isPrefixOf` "balance" = balance opts pats
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| otherwise = putStr usage
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doWithFilteredLedger :: [Flag] -> FilterPatterns -> (Ledger -> IO ()) -> IO ()
doWithFilteredLedger opts pats cmd = do
ledgerFilePath opts >>= parseLedgerFile >>= doWithParsed pats cmd
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doWithParsed :: FilterPatterns -> (Ledger -> IO ()) -> (Either ParseError LedgerFile) -> IO ()
doWithParsed pats cmd parsed = do
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case parsed of Left e -> parseError e
Right l -> cmd $ cacheLedger pats l
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type Command = [Flag] -> FilterPatterns -> IO ()
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test :: Command
test opts pats = do
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Tests.hunit
Tests.quickcheck
return ()
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printcmd :: Command
printcmd opts pats = do
doWithFilteredLedger opts pats printentries
where
printentries l = putStr $ showEntries $ setprecision $ entries $ rawledger l
where
setprecision = map (entrySetPrecision (lprecision l))
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register :: Command
register opts pats = do
doWithFilteredLedger opts pats printregister
where
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printregister l =
putStr $ showTransactionsWithBalances
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(sortBy (comparing date) $ ledgerTransactions l)
nullamt{precision=lprecision l}
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balance :: Command
balance opts pats = do
doWithFilteredLedger opts pats printbalance
where
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printbalance l =
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putStr $ showLedgerAccounts l depth
where
showsubs = (ShowSubs `elem` opts)
depth = case (pats, showsubs) of
((Nothing,_), False) -> 1
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otherwise -> 9999
{-
interactive testing:
*Main> p <- ledgerFilePath [File "./test.dat"] >>= parseLedgerFile
*Main> let r = either (\_ -> LedgerFile [] [] []) id p
*Main> let l = cacheLedger r
*Main> let ant = accountnametree l
*Main> let at = accounts l
*Main> putStr $ drawTree $ treemap show $ ant
*Main> putStr $ showLedgerAccounts l [] False 1
*Main> :m +Tests
*Main Tests> l7
-}