a848a835a2
This facilitates adding readers for new data formats. Timelog parsing is temporarily broken.
101 lines
3.2 KiB
Haskell
101 lines
3.2 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-|
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Read hledger data from various data formats, and related utilities.
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-}
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module Hledger.Read (
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tests_Hledger_Read,
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module Hledger.Read.Common,
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Hledger.Read.Journal.someamount,
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readJournalFile,
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readJournal,
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myLedgerPath,
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myTimelogPath,
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myJournal,
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myTimelog,
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)
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where
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import Hledger.Data.Types (Journal(..))
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import Hledger.Data.Utils
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import Hledger.Read.Common
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import qualified Hledger.Read.Journal (parseJournal,parseJournalFile,ledgerFile,someamount,tests_Journal)
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import qualified Hledger.Read.Timelog (tests_Timelog) --parseJournal
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import Control.Monad.Error
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import System.Directory (getHomeDirectory)
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import System.Environment (getEnv)
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import System.FilePath ((</>))
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import System.Exit
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import System.IO (stderr)
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#if __GLASGOW_HASKELL__ <= 610
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import System.IO.UTF8 (hPutStrLn)
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#else
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import System.IO (hPutStrLn)
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#endif
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ledgerenvvar = "LEDGER"
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timelogenvvar = "TIMELOG"
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ledgerdefaultfilename = ".ledger"
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timelogdefaultfilename = ".timelog"
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-- | Get the user's default ledger file path.
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myLedgerPath :: IO String
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myLedgerPath =
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getEnv ledgerenvvar `catch`
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(\_ -> do
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home <- getHomeDirectory `catch` (\_ -> return "")
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return $ home </> ledgerdefaultfilename)
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-- | Get the user's default timelog file path.
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myTimelogPath :: IO String
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myTimelogPath =
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getEnv timelogenvvar `catch`
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(\_ -> do
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home <- getHomeDirectory
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return $ home </> timelogdefaultfilename)
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-- | Read the user's default journal file, or give an error.
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myJournal :: IO Journal
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myJournal = myLedgerPath >>= readJournalFile
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-- | Read the user's default timelog file, or give an error.
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myTimelog :: IO Journal
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myTimelog = myTimelogPath >>= readJournalFile
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-- | Read a journal from this file, or throw an error.
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readJournalFile :: FilePath -> IO Journal
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readJournalFile f =
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(runErrorT . Hledger.Read.Journal.parseJournalFile) f >>= either printerror return
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where printerror e = hPutStrLn stderr e >> exitWith (ExitFailure 1)
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-- | Read a Journal from this string, or throw an error.
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readJournal :: String -> IO Journal
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readJournal s =
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(runErrorT . Hledger.Read.Journal.parseJournal "(from string)") s >>= either error return
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-- -- | Expand ~ in a file path (does not handle ~name).
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-- tildeExpand :: FilePath -> IO FilePath
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-- tildeExpand ('~':[]) = getHomeDirectory
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-- tildeExpand ('~':'/':xs) = getHomeDirectory >>= return . (++ ('/':xs))
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-- --handle ~name, requires -fvia-C or ghc 6.8:
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-- --import System.Posix.User
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-- -- tildeExpand ('~':xs) = do let (user, path) = span (/= '/') xs
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-- -- pw <- getUserEntryForName user
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-- -- return (homeDirectory pw ++ path)
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-- tildeExpand xs = return xs
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tests_Hledger_Read = TestList
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[
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"ledgerFile" ~: do
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assertBool "ledgerFile should parse an empty file" (isRight $ parseWithCtx emptyCtx Hledger.Read.Journal.ledgerFile "")
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r <- readJournal "" -- don't know how to get it from ledgerFile
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assertBool "ledgerFile parsing an empty file should give an empty ledger" $ null $ jtxns r
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,Hledger.Read.Journal.tests_Journal
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,Hledger.Read.Timelog.tests_Timelog
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]
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