49 lines
1.9 KiB
Haskell
49 lines
1.9 KiB
Haskell
{-|
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Utilities for top-level modules and ghci. See also "Ledger.IO" and
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"Ledger.Utils".
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-}
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module Utils
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where
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import Control.Monad.Error
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import Data.Time.Clock
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import Ledger
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import Options (Opt,ledgerFilePathFromOpts,optsToIOArgs)
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import System.IO
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import Text.ParserCombinators.Parsec
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import qualified Data.Map as Map (lookup)
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-- | parse the user's specified ledger file and run a hledger command on it,
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-- or report a parse error. This function makes the whole thing go.
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withLedgerDo :: [Opt] -> [String] -> ([Opt] -> [String] -> Ledger -> IO ()) -> IO ()
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withLedgerDo opts args cmd = do
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f <- ledgerFilePathFromOpts opts
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-- kludgily read the file a second time to get the full text,
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-- kludgily try not to fail if it's stdin. XXX
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rawtext <- readFile $ if f == "-" then "/dev/null" else f
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t <- getCurrentLocalTime
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let runcmd = cmd opts args . filterAndCacheLedgerWithOpts opts args t rawtext
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return f >>= runErrorT . parseLedgerFile t >>= either (hPutStrLn stderr) runcmd
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-- | Get a Ledger from the given string and options, or raise an error.
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ledgerFromStringWithOpts :: [Opt] -> [String] -> LocalTime -> String -> IO Ledger
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ledgerFromStringWithOpts opts args reftime s =
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liftM (filterAndCacheLedgerWithOpts opts args reftime s) $ rawLedgerFromString s
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-- | Read a Ledger from the given file, filtering according to the
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-- options, or give an error.
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readLedgerWithOpts :: [Opt] -> [String] -> FilePath -> IO Ledger
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readLedgerWithOpts opts args f = do
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t <- getCurrentLocalTime
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readLedgerWithIOArgs (optsToIOArgs opts args t) f
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-- | Convert a RawLedger to a canonicalised, cached and filtered Ledger
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-- based on the command-line options/arguments and a reference time.
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filterAndCacheLedgerWithOpts :: [Opt] -> [String] -> LocalTime -> String -> RawLedger -> Ledger
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filterAndCacheLedgerWithOpts opts args t = filterAndCacheLedger (optsToIOArgs opts args t)
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