990 lines
		
	
	
		
			37 KiB
		
	
	
	
		
			Haskell
		
	
	
	
	
	
			
		
		
	
	
			990 lines
		
	
	
		
			37 KiB
		
	
	
	
		
			Haskell
		
	
	
	
	
	
-- {-# OPTIONS_GHC -F -pgmF htfpp #-}
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{-# LANGUAGE CPP, RecordWildCards, NoMonoLocalBinds #-}
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{-|
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A reader for hledger's journal file format
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(<http://hledger.org/MANUAL.html#the-journal-file>).  hledger's journal
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format is a compatible subset of c++ ledger's
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(<http://ledger-cli.org/3.0/doc/ledger3.html#Journal-Format>), so this
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reader should handle many ledger files as well. Example:
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@
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2012\/3\/24 gift
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    expenses:gifts  $10
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    assets:cash
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@
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-}
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module Hledger.Read.JournalReader (
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  -- * Reader
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  reader,
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  -- * Parsers used elsewhere
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  parseJournalWith,
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  getParentAccount,
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  journal,
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  directive,
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  defaultyeardirective,
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  historicalpricedirective,
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  datetime,
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  code,
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  accountname,
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  amountp,
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  amountp',
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  mamountp',
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  emptyline
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#ifdef TESTS
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  -- * Tests
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  -- disabled by default, HTF not available on windows
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  ,htf_thisModulesTests
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  ,htf_Hledger_Read_JournalReader_importedTests
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#endif
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)
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where
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import qualified Control.Exception as C
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import Control.Monad
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import Control.Monad.Error
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import Data.Char (isNumber)
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import Data.List
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import Data.List.Split (wordsBy)
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import Data.Maybe
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import Data.Time.Calendar
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import Data.Time.LocalTime
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import Safe (headDef, lastDef)
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#ifdef TESTS
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import Test.Framework
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import Text.Parsec.Error
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#endif
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import Text.ParserCombinators.Parsec hiding (parse)
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import Text.Printf
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import System.FilePath
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import System.Time (getClockTime)
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import Hledger.Data
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import Hledger.Utils
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import Prelude hiding (readFile)
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-- standard reader exports
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reader :: Reader
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reader = Reader format detect parse
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format :: String
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format = "journal"
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-- | Does the given file path and data provide hledger's journal file format ?
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detect :: FilePath -> String -> Bool
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detect f _ = takeExtension f `elem` ['.':format, ".j"]
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-- | Parse and post-process a "Journal" from hledger's journal file
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-- format, or give an error.
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parse :: Maybe FilePath -> FilePath -> String -> ErrorT String IO Journal
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parse _ = -- trace ("running "++format++" reader") .
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          parseJournalWith journal
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-- parsing utils
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-- | Flatten a list of JournalUpdate's into a single equivalent one.
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combineJournalUpdates :: [JournalUpdate] -> JournalUpdate
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combineJournalUpdates us = liftM (foldl' (.) id) $ sequence us
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-- | Given a JournalUpdate-generating parsec parser, file path and data string,
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-- parse and post-process a Journal so that it's ready to use, or give an error.
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parseJournalWith :: (GenParser Char JournalContext (JournalUpdate,JournalContext)) -> FilePath -> String -> ErrorT String IO Journal
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parseJournalWith p f s = do
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  tc <- liftIO getClockTime
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  tl <- liftIO getCurrentLocalTime
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  y <- liftIO getCurrentYear
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  case runParser p nullctx{ctxYear=Just y} f s of
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    Right (updates,ctx) -> do
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                           j <- updates `ap` return nulljournal
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                           case journalFinalise tc tl f s ctx j of
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                             Right j'  -> return j'
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                             Left estr -> throwError estr
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    Left e -> throwError $ show e
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setYear :: Integer -> GenParser tok JournalContext ()
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setYear y = updateState (\ctx -> ctx{ctxYear=Just y})
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getYear :: GenParser tok JournalContext (Maybe Integer)
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getYear = liftM ctxYear getState
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setCommodityAndStyle :: (Commodity,AmountStyle) -> GenParser tok JournalContext ()
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setCommodityAndStyle cs = updateState (\ctx -> ctx{ctxCommodityAndStyle=Just cs})
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getCommodityAndStyle :: GenParser tok JournalContext (Maybe (Commodity,AmountStyle))
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getCommodityAndStyle = ctxCommodityAndStyle `fmap` getState
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pushParentAccount :: String -> GenParser tok JournalContext ()
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pushParentAccount parent = updateState addParentAccount
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    where addParentAccount ctx0 = ctx0 { ctxAccount = parent : ctxAccount ctx0 }
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popParentAccount :: GenParser tok JournalContext ()
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popParentAccount = do ctx0 <- getState
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                      case ctxAccount ctx0 of
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                        [] -> unexpected "End of account block with no beginning"
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                        (_:rest) -> setState $ ctx0 { ctxAccount = rest }
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getParentAccount :: GenParser tok JournalContext String
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getParentAccount = liftM (concatAccountNames . reverse . ctxAccount) getState
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addAccountAlias :: (AccountName,AccountName) -> GenParser tok JournalContext ()
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addAccountAlias a = updateState (\(ctx@Ctx{..}) -> ctx{ctxAliases=a:ctxAliases})
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getAccountAliases :: GenParser tok JournalContext [(AccountName,AccountName)]
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getAccountAliases = liftM ctxAliases getState
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clearAccountAliases :: GenParser tok JournalContext ()
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clearAccountAliases = updateState (\(ctx@Ctx{..}) -> ctx{ctxAliases=[]})
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-- parsers
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-- | Top-level journal parser. Returns a single composite, I/O performing,
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-- error-raising "JournalUpdate" (and final "JournalContext") which can be
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-- applied to an empty journal to get the final result.
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journal :: GenParser Char JournalContext (JournalUpdate,JournalContext)
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journal = do
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  journalupdates <- many journalItem
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  eof
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  finalctx <- getState
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  return $ (combineJournalUpdates journalupdates, finalctx)
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    where 
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      -- As all journal line types can be distinguished by the first
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      -- character, excepting transactions versus empty (blank or
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      -- comment-only) lines, can use choice w/o try
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      journalItem = choice [ directive
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                           , liftM (return . addTransaction) transaction
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                           , liftM (return . addModifierTransaction) modifiertransaction
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                           , liftM (return . addPeriodicTransaction) periodictransaction
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                           , liftM (return . addHistoricalPrice) historicalpricedirective
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                           , emptyline >> return (return id)
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                           ] <?> "journal transaction or directive"
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-- cf http://ledger-cli.org/3.0/doc/ledger3.html#Command-Directives
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directive :: GenParser Char JournalContext JournalUpdate
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directive = do
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  optional $ char '!'
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  choice' [
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    includedirective
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   ,aliasdirective
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   ,endaliasesdirective
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   ,accountdirective
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   ,enddirective
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   ,tagdirective
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   ,endtagdirective
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   ,defaultyeardirective
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   ,defaultcommoditydirective
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   ,commodityconversiondirective
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   ,ignoredpricecommoditydirective
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   ]
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  <?> "directive"
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includedirective :: GenParser Char JournalContext JournalUpdate
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includedirective = do
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  string "include"
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  many1 spacenonewline
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  filename <- restofline
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  outerState <- getState
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  outerPos <- getPosition
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  let curdir = takeDirectory (sourceName outerPos)
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  return $ do filepath <- expandPath curdir filename
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              txt <- readFileOrError outerPos filepath
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              let inIncluded = show outerPos ++ " in included file " ++ show filename ++ ":\n"
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              case runParser journal outerState filepath txt of
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                Right (ju,_) -> combineJournalUpdates [return $ journalAddFile (filepath,txt), ju] `catchError` (throwError . (inIncluded ++))
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                Left err     -> throwError $ inIncluded ++ show err
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      where readFileOrError pos fp =
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                ErrorT $ liftM Right (readFile' fp) `C.catch`
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                  \e -> return $ Left $ printf "%s reading %s:\n%s" (show pos) fp (show (e::C.IOException))
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journalAddFile :: (FilePath,String) -> Journal -> Journal
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journalAddFile f j@Journal{files=fs} = j{files=fs++[f]}
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  -- XXX currently called in reverse order of includes, I can't see why
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accountdirective :: GenParser Char JournalContext JournalUpdate
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accountdirective = do
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  string "account"
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  many1 spacenonewline
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  parent <- accountname
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  newline
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  pushParentAccount parent
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  return $ return id
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enddirective :: GenParser Char JournalContext JournalUpdate
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enddirective = do
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  string "end"
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  popParentAccount
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  return (return id)
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aliasdirective :: GenParser Char JournalContext JournalUpdate
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aliasdirective = do
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  string "alias"
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  many1 spacenonewline
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  orig <- many1 $ noneOf "="
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  char '='
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  alias <- restofline
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  addAccountAlias (accountNameWithoutPostingType $ strip orig
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                  ,accountNameWithoutPostingType $ strip alias)
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  return $ return id
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endaliasesdirective :: GenParser Char JournalContext JournalUpdate
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endaliasesdirective = do
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  string "end aliases"
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  clearAccountAliases
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  return (return id)
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tagdirective :: GenParser Char JournalContext JournalUpdate
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tagdirective = do
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  string "tag" <?> "tag directive"
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  many1 spacenonewline
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  _ <- many1 nonspace
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  restofline
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  return $ return id
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endtagdirective :: GenParser Char JournalContext JournalUpdate
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endtagdirective = do
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  (string "end tag" <|> string "pop") <?> "end tag or pop directive"
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  restofline
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  return $ return id
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defaultyeardirective :: GenParser Char JournalContext JournalUpdate
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defaultyeardirective = do
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  char 'Y' <?> "default year"
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  many spacenonewline
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  y <- many1 digit
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  let y' = read y
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  failIfInvalidYear y
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  setYear y'
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  return $ return id
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defaultcommoditydirective :: GenParser Char JournalContext JournalUpdate
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defaultcommoditydirective = do
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  char 'D' <?> "default commodity"
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  many1 spacenonewline
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  Amount{..} <- amountp
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  setCommodityAndStyle (acommodity, astyle)
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  restofline
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  return $ return id
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historicalpricedirective :: GenParser Char JournalContext HistoricalPrice
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historicalpricedirective = do
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  char 'P' <?> "historical price"
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  many spacenonewline
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  date <- try (do {LocalTime d _ <- datetime; return d}) <|> date -- a time is ignored
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  many1 spacenonewline
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  symbol <- commoditysymbol
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  many spacenonewline
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  price <- amountp
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  restofline
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  return $ HistoricalPrice date symbol price
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ignoredpricecommoditydirective :: GenParser Char JournalContext JournalUpdate
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ignoredpricecommoditydirective = do
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  char 'N' <?> "ignored-price commodity"
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  many1 spacenonewline
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  commoditysymbol
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  restofline
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  return $ return id
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commodityconversiondirective :: GenParser Char JournalContext JournalUpdate
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commodityconversiondirective = do
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  char 'C' <?> "commodity conversion"
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  many1 spacenonewline
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  amountp
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  many spacenonewline
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  char '='
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  many spacenonewline
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  amountp
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  restofline
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  return $ return id
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modifiertransaction :: GenParser Char JournalContext ModifierTransaction
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modifiertransaction = do
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  char '=' <?> "modifier transaction"
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  many spacenonewline
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  valueexpr <- restofline
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  postings <- postings
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  return $ ModifierTransaction valueexpr postings
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periodictransaction :: GenParser Char JournalContext PeriodicTransaction
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periodictransaction = do
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  char '~' <?> "periodic transaction"
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  many spacenonewline
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  periodexpr <- restofline
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  postings <- postings
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  return $ PeriodicTransaction periodexpr postings
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-- | Parse a (possibly unbalanced) transaction.
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transaction :: GenParser Char JournalContext Transaction
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transaction = do
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  -- ptrace "transaction"
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  date <- date <?> "transaction"
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  edate <- optionMaybe (secondarydate date) <?> "secondary date"
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  status <- status <?> "cleared flag"
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  code <- code <?> "transaction code"
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  description <- descriptionp >>= return . strip
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  comment <- try followingcomment <|> (newline >> return "")
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  let tags = tagsInComment comment
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  postings <- postings
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  return $ txnTieKnot $ Transaction date edate status code description comment tags postings ""
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descriptionp = many (noneOf ";\n")
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#ifdef TESTS
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test_transaction = do
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    let s `gives` t = do
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                        let p = parseWithCtx nullctx transaction s
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                        assertBool $ isRight p
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                        let Right t2 = p
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                            -- same f = assertEqual (f t) (f t2)
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                        assertEqual (tdate t) (tdate t2)
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                        assertEqual (tdate2 t) (tdate2 t2)
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                        assertEqual (tstatus t) (tstatus t2)
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                        assertEqual (tcode t) (tcode t2)
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                        assertEqual (tdescription t) (tdescription t2)
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                        assertEqual (tcomment t) (tcomment t2)
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                        assertEqual (ttags t) (ttags t2)
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                        assertEqual (tpreceding_comment_lines t) (tpreceding_comment_lines t2)
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                        assertEqual (show $ tpostings t) (show $ tpostings t2)
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    -- "0000/01/01\n\n" `gives` nulltransaction 
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    unlines [
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      "2012/05/14=2012/05/15 (code) desc  ; tcomment1",
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      "    ; tcomment2",
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      "    ; ttag1: val1",
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      "    * a         $1.00  ; pcomment1",
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      "    ; pcomment2",
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      "    ; ptag1: val1",
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      "    ; ptag2: val2"
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      ]
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     `gives`
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     nulltransaction{
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      tdate=parsedate "2012/05/14",
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      tdate2=Just $ parsedate "2012/05/15",
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      tstatus=False,
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      tcode="code",
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      tdescription="desc",
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      tcomment=" tcomment1\n tcomment2\n ttag1: val1\n",
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      ttags=[("ttag1","val1")],
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      tpostings=[
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        nullposting{
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          pstatus=True,
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          paccount="a",
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          pamount=Mixed [usd 1],
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          pcomment=" pcomment1\n pcomment2\n ptag1: val1\n  ptag2: val2\n",
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          ptype=RegularPosting,
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          ptags=[("ptag1","val1"),("ptag2","val2")],
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          ptransaction=Nothing
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          }
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        ],
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      tpreceding_comment_lines=""
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      }
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    assertRight $ parseWithCtx nullctx transaction $ unlines
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      ["2007/01/28 coopportunity"
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      ,"    expenses:food:groceries                   $47.18"
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      ,"    assets:checking                          $-47.18"
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      ,""
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      ]
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    -- transaction should not parse just a date
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    assertLeft $ parseWithCtx nullctx transaction "2009/1/1\n"
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    -- transaction should not parse just a date and description
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    assertLeft $ parseWithCtx nullctx transaction "2009/1/1 a\n"
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    -- transaction should not parse a following comment as part of the description
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    let p = parseWithCtx nullctx transaction "2009/1/1 a ;comment\n b 1\n"
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    assertRight p
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    assertEqual "a" (let Right p' = p in tdescription p')
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    -- parse transaction with following whitespace line
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    assertRight $ parseWithCtx nullctx transaction $ unlines
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        ["2012/1/1"
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        ,"  a  1"
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        ,"  b"
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        ," "
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        ]
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    let p = parseWithCtx nullctx transaction $ unlines
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             ["2009/1/1 x  ; transaction comment"
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             ," a  1  ; posting 1 comment"
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             ," ; posting 1 comment 2"
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             ," b"
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             ," ; posting 2 comment"
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             ]
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    assertRight p
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    assertEqual 2 (let Right t = p in length $ tpostings t)
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#endif       
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-- | Parse a date in YYYY/MM/DD format. Fewer digits are allowed. The year
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-- may be omitted if a default year has already been set.
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date :: GenParser Char JournalContext Day
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date = do
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  -- hacky: try to ensure precise errors for invalid dates
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  -- XXX reported error position is not too good
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  -- pos <- getPosition
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  datestr <- many1 $ choice' [digit, datesepchar]
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  let dateparts = wordsBy (`elem` datesepchars) datestr
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  currentyear <- getYear
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  [y,m,d] <- case (dateparts,currentyear) of
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              ([m,d],Just y)  -> return [show y,m,d]
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              ([_,_],Nothing) -> fail $ "partial date "++datestr++" found, but the current year is unknown"
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              ([y,m,d],_)     -> return [y,m,d]
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              _               -> fail $ "bad date: " ++ datestr
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  let maybedate = fromGregorianValid (read y) (read m) (read d)
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  case maybedate of
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    Nothing   -> fail $ "bad date: " ++ datestr
 | 
						|
    Just date -> return date
 | 
						|
  <?> "full or partial date"
 | 
						|
 | 
						|
-- | Parse a date and time in YYYY/MM/DD HH:MM[:SS][+-ZZZZ] format.  Any
 | 
						|
-- timezone will be ignored; the time is treated as local time.  Fewer
 | 
						|
-- digits are allowed, except in the timezone. The year may be omitted if
 | 
						|
-- a default year has already been set.
 | 
						|
datetime :: GenParser Char JournalContext LocalTime
 | 
						|
datetime = do
 | 
						|
  day <- date
 | 
						|
  many1 spacenonewline
 | 
						|
  h <- many1 digit
 | 
						|
  let h' = read h
 | 
						|
  guard $ h' >= 0 && h' <= 23
 | 
						|
  char ':'
 | 
						|
  m <- many1 digit
 | 
						|
  let m' = read m
 | 
						|
  guard $ m' >= 0 && m' <= 59
 | 
						|
  s <- optionMaybe $ char ':' >> many1 digit
 | 
						|
  let s' = case s of Just sstr -> read sstr
 | 
						|
                     Nothing   -> 0
 | 
						|
  guard $ s' >= 0 && s' <= 59
 | 
						|
  {- tz <- -}
 | 
						|
  optionMaybe $ do
 | 
						|
                   plusminus <- oneOf "-+"
 | 
						|
                   d1 <- digit
 | 
						|
                   d2 <- digit
 | 
						|
                   d3 <- digit
 | 
						|
                   d4 <- digit
 | 
						|
                   return $ plusminus:d1:d2:d3:d4:""
 | 
						|
  -- ltz <- liftIO $ getCurrentTimeZone
 | 
						|
  -- let tz' = maybe ltz (fromMaybe ltz . parseTime defaultTimeLocale "%z") tz
 | 
						|
  -- return $ localTimeToUTC tz' $ LocalTime day $ TimeOfDay h' m' (fromIntegral s')
 | 
						|
  return $ LocalTime day $ TimeOfDay h' m' (fromIntegral s')
 | 
						|
 | 
						|
secondarydate :: Day -> GenParser Char JournalContext Day
 | 
						|
secondarydate primarydate = do
 | 
						|
  char '='
 | 
						|
  -- kludgy way to use primary date for default year
 | 
						|
  let withDefaultYear d p = do
 | 
						|
        y <- getYear
 | 
						|
        let (y',_,_) = toGregorian d in setYear y'
 | 
						|
        r <- p
 | 
						|
        when (isJust y) $ setYear $ fromJust y
 | 
						|
        return r
 | 
						|
  edate <- withDefaultYear primarydate date
 | 
						|
  return edate
 | 
						|
 | 
						|
status :: GenParser Char JournalContext Bool
 | 
						|
status = try (do { many spacenonewline; (char '*' <|> char '!') <?> "status"; return True } ) <|> return False
 | 
						|
 | 
						|
code :: GenParser Char JournalContext String
 | 
						|
code = try (do { many1 spacenonewline; char '(' <?> "code"; code <- anyChar `manyTill` char ')'; return code } ) <|> return ""
 | 
						|
 | 
						|
-- Parse the following whitespace-beginning lines as postings, posting tags, and/or comments.
 | 
						|
postings :: GenParser Char JournalContext [Posting]
 | 
						|
postings = many1 (try postingp) <?> "postings"
 | 
						|
            
 | 
						|
-- linebeginningwithspaces :: GenParser Char JournalContext String
 | 
						|
-- linebeginningwithspaces = do
 | 
						|
--   sp <- many1 spacenonewline
 | 
						|
--   c <- nonspace
 | 
						|
--   cs <- restofline
 | 
						|
--   return $ sp ++ (c:cs) ++ "\n"
 | 
						|
 | 
						|
postingp :: GenParser Char JournalContext Posting
 | 
						|
postingp = do
 | 
						|
  many1 spacenonewline
 | 
						|
  status <- status
 | 
						|
  many spacenonewline
 | 
						|
  account <- modifiedaccountname
 | 
						|
  let (ptype, account') = (accountNamePostingType account, unbracket account)
 | 
						|
  amount <- spaceandamountormissing
 | 
						|
  massertion <- balanceassertion
 | 
						|
  _ <- fixedlotprice
 | 
						|
  many spacenonewline
 | 
						|
  ctx <- getState
 | 
						|
  comment <- try followingcomment <|> (newline >> return "")
 | 
						|
  let tags = tagsInComment comment
 | 
						|
  -- oh boy
 | 
						|
  d  <- maybe (return Nothing) (either (fail.show) (return.Just)) (parseWithCtx ctx date `fmap` dateValueFromTags tags)
 | 
						|
  d2 <- maybe (return Nothing) (either (fail.show) (return.Just)) (parseWithCtx ctx date `fmap` date2ValueFromTags tags)
 | 
						|
  return posting{pdate=d, pdate2=d2, pstatus=status, paccount=account', pamount=amount, pcomment=comment, ptype=ptype, ptags=tags, pbalanceassertion=massertion}
 | 
						|
 | 
						|
#ifdef TESTS
 | 
						|
test_postingp = do
 | 
						|
    let s `gives` ep = do
 | 
						|
                         let parse = parseWithCtx nullctx postingp s
 | 
						|
                         assertBool -- "postingp parser" 
 | 
						|
                           $ isRight parse
 | 
						|
                         let Right ap = parse
 | 
						|
                             same f = assertEqual (f ep) (f ap)
 | 
						|
                         same pdate
 | 
						|
                         same pstatus
 | 
						|
                         same paccount
 | 
						|
                         same pamount
 | 
						|
                         same pcomment
 | 
						|
                         same ptype
 | 
						|
                         same ptags
 | 
						|
                         same ptransaction
 | 
						|
    "  expenses:food:dining  $10.00   ; a: a a \n   ; b: b b \n" `gives`
 | 
						|
      posting{paccount="expenses:food:dining", pamount=Mixed [usd 10], pcomment=" a: a a \n b: b b \n", ptags=[("a","a a"), ("b","b b")]}
 | 
						|
 | 
						|
    " a  1 ; [2012/11/28]\n" `gives` 
 | 
						|
      ("a" `post` num 1){pcomment=" [2012/11/28]\n"
 | 
						|
                        ,ptags=[("date","2012/11/28")]
 | 
						|
                        ,pdate=parsedateM "2012/11/28"}
 | 
						|
 | 
						|
    " a  1 ; a:a, [=2012/11/28]\n" `gives` 
 | 
						|
      ("a" `post` num 1){pcomment=" a:a, [=2012/11/28]\n"
 | 
						|
                        ,ptags=[("a","a"), ("date2","2012/11/28")]
 | 
						|
                        ,pdate=Nothing}
 | 
						|
 | 
						|
    " a  1 ; a:a\n  ; [2012/11/28=2012/11/29],b:b\n" `gives` 
 | 
						|
      ("a" `post` num 1){pcomment=" a:a\n [2012/11/28=2012/11/29],b:b\n"
 | 
						|
                        ,ptags=[("a","a"), ("date","2012/11/28"), ("date2","2012/11/29"), ("b","b")]
 | 
						|
                        ,pdate=parsedateM "2012/11/28"}
 | 
						|
     
 | 
						|
    assertBool -- "postingp parses a quoted commodity with numbers"
 | 
						|
      (isRight $ parseWithCtx nullctx postingp "  a  1 \"DE123\"\n")
 | 
						|
 | 
						|
  -- ,"postingp parses balance assertions and fixed lot prices" ~: do
 | 
						|
    assertBool (isRight $ parseWithCtx nullctx postingp "  a  1 \"DE123\" =$1 { =2.2 EUR} \n")
 | 
						|
 | 
						|
    -- let parse = parseWithCtx nullctx postingp " a\n ;next-line comment\n"
 | 
						|
    -- assertRight parse
 | 
						|
    -- let Right p = parse
 | 
						|
    -- assertEqual "next-line comment\n" (pcomment p)
 | 
						|
    -- assertEqual (Just nullmixedamt) (pbalanceassertion p)
 | 
						|
#endif       
 | 
						|
 | 
						|
-- | Parse an account name, then apply any parent account prefix and/or account aliases currently in effect.
 | 
						|
modifiedaccountname :: GenParser Char JournalContext AccountName
 | 
						|
modifiedaccountname = do
 | 
						|
  a <- accountname
 | 
						|
  prefix <- getParentAccount
 | 
						|
  let prefixed = prefix `joinAccountNames` a
 | 
						|
  aliases <- getAccountAliases
 | 
						|
  return $ accountNameApplyAliases aliases prefixed
 | 
						|
 | 
						|
-- | Parse an account name. Account names may have single spaces inside
 | 
						|
-- them, and are terminated by two or more spaces. They should have one or
 | 
						|
-- more components of at least one character, separated by the account
 | 
						|
-- separator char.
 | 
						|
accountname :: GenParser Char st AccountName
 | 
						|
accountname = do
 | 
						|
    a <- many1 (nonspace <|> singlespace)
 | 
						|
    let a' = striptrailingspace a
 | 
						|
    when (accountNameFromComponents (accountNameComponents a') /= a')
 | 
						|
         (fail $ "accountname seems ill-formed: "++a')
 | 
						|
    return a'
 | 
						|
    where 
 | 
						|
      singlespace = try (do {spacenonewline; do {notFollowedBy spacenonewline; return ' '}})
 | 
						|
      -- couldn't avoid consuming a final space sometimes, harmless
 | 
						|
      striptrailingspace s = if last s == ' ' then init s else s
 | 
						|
 | 
						|
-- accountnamechar = notFollowedBy (oneOf "()[]") >> nonspace
 | 
						|
--     <?> "account name character (non-bracket, non-parenthesis, non-whitespace)"
 | 
						|
 | 
						|
-- | Parse whitespace then an amount, with an optional left or right
 | 
						|
-- currency symbol and optional price, or return the special
 | 
						|
-- "missing" marker amount.
 | 
						|
spaceandamountormissing :: GenParser Char JournalContext MixedAmount
 | 
						|
spaceandamountormissing =
 | 
						|
  try (do
 | 
						|
        many1 spacenonewline
 | 
						|
        (Mixed . (:[])) `fmap` amountp <|> return missingmixedamt
 | 
						|
      ) <|> return missingmixedamt
 | 
						|
 | 
						|
#ifdef TESTS
 | 
						|
assertParseEqual' :: (Show a, Eq a) => (Either ParseError a) -> a -> Assertion
 | 
						|
assertParseEqual' parse expected = either (assertFailure.show) (`is'` expected) parse
 | 
						|
 | 
						|
is' :: (Eq a, Show a) => a -> a -> Assertion
 | 
						|
a `is'` e = assertEqual e a
 | 
						|
 | 
						|
test_spaceandamountormissing = do
 | 
						|
    assertParseEqual' (parseWithCtx nullctx spaceandamountormissing " $47.18") (Mixed [usd 47.18])
 | 
						|
    assertParseEqual' (parseWithCtx nullctx spaceandamountormissing "$47.18") missingmixedamt
 | 
						|
    assertParseEqual' (parseWithCtx nullctx spaceandamountormissing " ") missingmixedamt
 | 
						|
    assertParseEqual' (parseWithCtx nullctx spaceandamountormissing "") missingmixedamt
 | 
						|
#endif       
 | 
						|
 | 
						|
-- | Parse a single-commodity amount, with optional symbol on the left or
 | 
						|
-- right, optional unit or total price, and optional (ignored)
 | 
						|
-- ledger-style balance assertion or fixed lot price declaration.
 | 
						|
amountp :: GenParser Char JournalContext Amount
 | 
						|
amountp = try leftsymbolamount <|> try rightsymbolamount <|> nosymbolamount
 | 
						|
 | 
						|
#ifdef TESTS
 | 
						|
test_amountp = do
 | 
						|
    assertParseEqual' (parseWithCtx nullctx amountp "$47.18") (usd 47.18)
 | 
						|
    assertParseEqual' (parseWithCtx nullctx amountp "$1.") (usd 1 `withPrecision` 0)
 | 
						|
  -- ,"amount with unit price" ~: do
 | 
						|
    assertParseEqual'
 | 
						|
     (parseWithCtx nullctx amountp "$10 @ €0.5")
 | 
						|
     (usd 10 `withPrecision` 0 `at` (eur 0.5 `withPrecision` 1))
 | 
						|
  -- ,"amount with total price" ~: do
 | 
						|
    assertParseEqual'
 | 
						|
     (parseWithCtx nullctx amountp "$10 @@ €5")
 | 
						|
     (usd 10 `withPrecision` 0 @@ (eur 5 `withPrecision` 0))
 | 
						|
#endif       
 | 
						|
 | 
						|
-- | Parse an amount from a string, or get an error.
 | 
						|
amountp' :: String -> Amount
 | 
						|
amountp' s = either (error' . show) id $ parseWithCtx nullctx amountp s
 | 
						|
 | 
						|
-- | Parse a mixed amount from a string, or get an error.
 | 
						|
mamountp' :: String -> MixedAmount
 | 
						|
mamountp' = mixed . amountp'
 | 
						|
 | 
						|
leftsymbolamount :: GenParser Char JournalContext Amount
 | 
						|
leftsymbolamount = do
 | 
						|
  sign <- optionMaybe $ string "-"
 | 
						|
  let applysign = if isJust sign then negate else id
 | 
						|
  c <- commoditysymbol 
 | 
						|
  sp <- many spacenonewline
 | 
						|
  (q,prec,dec,sep,seppos) <- number
 | 
						|
  let s = amountstyle{ascommodityside=L, ascommodityspaced=not $ null sp, asdecimalpoint=dec, asprecision=prec, asseparator=sep, asseparatorpositions=seppos}
 | 
						|
  p <- priceamount
 | 
						|
  return $ applysign $ Amount c q p s
 | 
						|
  <?> "left-symbol amount"
 | 
						|
 | 
						|
rightsymbolamount :: GenParser Char JournalContext Amount
 | 
						|
rightsymbolamount = do
 | 
						|
  (q,prec,dec,sep,seppos) <- number
 | 
						|
  sp <- many spacenonewline
 | 
						|
  c <- commoditysymbol
 | 
						|
  p <- priceamount
 | 
						|
  let s = amountstyle{ascommodityside=R, ascommodityspaced=not $ null sp, asdecimalpoint=dec, asprecision=prec, asseparator=sep, asseparatorpositions=seppos}
 | 
						|
  return $ Amount c q p s
 | 
						|
  <?> "right-symbol amount"
 | 
						|
 | 
						|
nosymbolamount :: GenParser Char JournalContext Amount
 | 
						|
nosymbolamount = do
 | 
						|
  (q,prec,dec,sep,seppos) <- number
 | 
						|
  p <- priceamount
 | 
						|
  defcs <- getCommodityAndStyle
 | 
						|
  let (c,s) = case defcs of
 | 
						|
        Just (c',s') -> (c',s')
 | 
						|
        Nothing -> ("", amountstyle{asdecimalpoint=dec, asprecision=prec, asseparator=sep, asseparatorpositions=seppos})
 | 
						|
  return $ Amount c q p s
 | 
						|
  <?> "no-symbol amount"
 | 
						|
 | 
						|
commoditysymbol :: GenParser Char JournalContext String
 | 
						|
commoditysymbol = (quotedcommoditysymbol <|> simplecommoditysymbol) <?> "commodity symbol"
 | 
						|
 | 
						|
quotedcommoditysymbol :: GenParser Char JournalContext String
 | 
						|
quotedcommoditysymbol = do
 | 
						|
  char '"'
 | 
						|
  s <- many1 $ noneOf ";\n\""
 | 
						|
  char '"'
 | 
						|
  return s
 | 
						|
 | 
						|
simplecommoditysymbol :: GenParser Char JournalContext String
 | 
						|
simplecommoditysymbol = many1 (noneOf nonsimplecommoditychars)
 | 
						|
 | 
						|
priceamount :: GenParser Char JournalContext Price
 | 
						|
priceamount =
 | 
						|
    try (do
 | 
						|
          many spacenonewline
 | 
						|
          char '@'
 | 
						|
          try (do
 | 
						|
                char '@'
 | 
						|
                many spacenonewline
 | 
						|
                a <- amountp -- XXX can parse more prices ad infinitum, shouldn't
 | 
						|
                return $ TotalPrice a)
 | 
						|
           <|> (do
 | 
						|
            many spacenonewline
 | 
						|
            a <- amountp -- XXX can parse more prices ad infinitum, shouldn't
 | 
						|
            return $ UnitPrice a))
 | 
						|
         <|> return NoPrice
 | 
						|
 | 
						|
balanceassertion :: GenParser Char JournalContext (Maybe MixedAmount)
 | 
						|
balanceassertion =
 | 
						|
    try (do
 | 
						|
          many spacenonewline
 | 
						|
          char '='
 | 
						|
          many spacenonewline
 | 
						|
          a <- amountp -- XXX should restrict to a simple amount
 | 
						|
          return $ Just $ Mixed [a])
 | 
						|
         <|> return Nothing
 | 
						|
 | 
						|
-- http://ledger-cli.org/3.0/doc/ledger3.html#Fixing-Lot-Prices
 | 
						|
fixedlotprice :: GenParser Char JournalContext (Maybe Amount)
 | 
						|
fixedlotprice =
 | 
						|
    try (do
 | 
						|
          many spacenonewline
 | 
						|
          char '{'
 | 
						|
          many spacenonewline
 | 
						|
          char '='
 | 
						|
          many spacenonewline
 | 
						|
          a <- amountp -- XXX should restrict to a simple amount
 | 
						|
          many spacenonewline
 | 
						|
          char '}'
 | 
						|
          return $ Just a)
 | 
						|
         <|> return Nothing
 | 
						|
 | 
						|
-- | Parse a numeric quantity for its value and display attributes.  Some
 | 
						|
-- international number formats (cf
 | 
						|
-- http://en.wikipedia.org/wiki/Decimal_separator) are accepted: either
 | 
						|
-- period or comma may be used for the decimal point, and the other of
 | 
						|
-- these may be used for separating digit groups in the integer part (eg a
 | 
						|
-- thousands separator).  This returns the numeric value, the precision
 | 
						|
-- (number of digits to the right of the decimal point), the decimal point
 | 
						|
-- and separator characters (defaulting to . and ,), and the positions of
 | 
						|
-- separators (counting leftward from the decimal point, the last is
 | 
						|
-- assumed to repeat).
 | 
						|
number :: GenParser Char JournalContext (Quantity, Int, Char, Char, [Int])
 | 
						|
number = do
 | 
						|
  sign <- optionMaybe $ string "-"
 | 
						|
  parts <- many1 $ choice' [many1 digit, many1 $ char ',', many1 $ char '.']
 | 
						|
  let numeric = isNumber . headDef '_'
 | 
						|
      (_, puncparts) = partition numeric parts
 | 
						|
      (ok,decimalpoint',separator') =
 | 
						|
          case puncparts of
 | 
						|
            []     -> (True, Nothing, Nothing)  -- no punctuation chars
 | 
						|
            [d:""] -> (True, Just d, Nothing)   -- just one punctuation char, assume it's a decimal point
 | 
						|
            [_]    -> (False, Nothing, Nothing) -- adjacent punctuation chars, not ok
 | 
						|
            _:_:_  -> let (s:ss, d) = (init puncparts, last puncparts) -- two or more punctuation chars
 | 
						|
                     in if (any ((/=1).length) puncparts  -- adjacent punctuation chars, not ok
 | 
						|
                            || any (s/=) ss                -- separator chars differ, not ok
 | 
						|
                            || head parts == s)            -- number begins with a separator char, not ok
 | 
						|
                         then (False, Nothing, Nothing)
 | 
						|
                         else if s == d
 | 
						|
                               then (True, Nothing, Just $ head s) -- just one kind of punctuation, assume separator chars
 | 
						|
                               else (True, Just $ head d, Just $ head s) -- separators and a decimal point
 | 
						|
  when (not ok) (fail $ "number seems ill-formed: "++concat parts)
 | 
						|
  let (intparts',fracparts') = span ((/= decimalpoint') . Just . head) parts
 | 
						|
      (intparts, fracpart) = (filter numeric intparts', filter numeric fracparts')
 | 
						|
      separatorpositions = reverse $ map length $ drop 1 intparts
 | 
						|
      int = concat $ "":intparts
 | 
						|
      frac = concat $ "":fracpart
 | 
						|
      precision = length frac
 | 
						|
      int' = if null int then "0" else int
 | 
						|
      frac' = if null frac then "0" else frac
 | 
						|
      sign' = fromMaybe "" sign
 | 
						|
      quantity = read $ sign'++int'++"."++frac' -- this read should never fail
 | 
						|
      (decimalpoint, separator) = case (decimalpoint', separator') of (Just d,  Just s)   -> (d,s)
 | 
						|
                                                                      (Just '.',Nothing)  -> ('.',',')
 | 
						|
                                                                      (Just ',',Nothing)  -> (',','.')
 | 
						|
                                                                      (Nothing, Just '.') -> (',','.')
 | 
						|
                                                                      (Nothing, Just ',') -> ('.',',')
 | 
						|
                                                                      _                   -> ('.',',')
 | 
						|
  return (quantity,precision,decimalpoint,separator,separatorpositions)
 | 
						|
  <?> "number"
 | 
						|
 | 
						|
#ifdef TESTS
 | 
						|
test_number = do
 | 
						|
      let s `is` n = assertParseEqual' (parseWithCtx nullctx number s) n
 | 
						|
          assertFails = assertBool . isLeft . parseWithCtx nullctx number 
 | 
						|
      assertFails ""
 | 
						|
      "0"          `is` (0, 0, '.', ',', [])
 | 
						|
      "1"          `is` (1, 0, '.', ',', [])
 | 
						|
      "1.1"        `is` (1.1, 1, '.', ',', [])
 | 
						|
      "1,000.1"    `is` (1000.1, 1, '.', ',', [3])
 | 
						|
      "1.00.000,1" `is` (100000.1, 1, ',', '.', [3,2])
 | 
						|
      "1,000,000"  `is` (1000000, 0, '.', ',', [3,3])
 | 
						|
      "1."         `is` (1,   0, '.', ',', [])
 | 
						|
      "1,"         `is` (1,   0, ',', '.', [])
 | 
						|
      ".1"         `is` (0.1, 1, '.', ',', [])
 | 
						|
      ",1"         `is` (0.1, 1, ',', '.', [])
 | 
						|
      assertFails "1,000.000,1"
 | 
						|
      assertFails "1.000,000.1"
 | 
						|
      assertFails "1,000.000.1"
 | 
						|
      assertFails "1,,1"
 | 
						|
      assertFails "1..1"
 | 
						|
      assertFails ".1,"
 | 
						|
      assertFails ",1."
 | 
						|
#endif       
 | 
						|
 | 
						|
-- comment parsers
 | 
						|
 | 
						|
emptyline :: GenParser Char JournalContext ()
 | 
						|
emptyline = do many spacenonewline
 | 
						|
               optional $ (char ';' <?> "comment") >> many (noneOf "\n")
 | 
						|
               newline
 | 
						|
               return ()
 | 
						|
 | 
						|
followingcomment :: GenParser Char JournalContext String
 | 
						|
followingcomment =
 | 
						|
  -- ptrace "followingcomment"
 | 
						|
  (do first <- many spacenonewline >> followingcommentline
 | 
						|
      rest <- many (try (many1 spacenonewline >> followingcommentline))
 | 
						|
      return $ unlines $ first:rest
 | 
						|
  ) <|>
 | 
						|
  do
 | 
						|
    many spacenonewline >> newline
 | 
						|
    rest <- many (try (many1 spacenonewline >> followingcommentline))    
 | 
						|
    return $ unlines rest
 | 
						|
 | 
						|
followingcommentline :: GenParser Char JournalContext String
 | 
						|
followingcommentline = do
 | 
						|
  -- ptrace "followingcommentline"
 | 
						|
  char ';'
 | 
						|
  l <- anyChar `manyTill` eolof
 | 
						|
  optional newline
 | 
						|
  return l
 | 
						|
 | 
						|
tagsInComment :: String -> [Tag]
 | 
						|
tagsInComment c = concatMap tagsInCommentLine $ lines c'
 | 
						|
  where
 | 
						|
    c' = ledgerDateSyntaxToTags c
 | 
						|
    
 | 
						|
tagsInCommentLine :: String -> [Tag]
 | 
						|
tagsInCommentLine = catMaybes . map maybetag . map strip . splitAtElement ','
 | 
						|
  where
 | 
						|
    maybetag s = case parseWithCtx nullctx tag s of
 | 
						|
                  Right t -> Just t
 | 
						|
                  Left _ -> Nothing
 | 
						|
 | 
						|
tag = do
 | 
						|
  -- ptrace "tag"
 | 
						|
  n <- tagname
 | 
						|
  v <- tagvalue
 | 
						|
  return (n,v)
 | 
						|
 | 
						|
tagname = do
 | 
						|
  -- ptrace "tagname"
 | 
						|
  n <- many1 $ noneOf ": \t"
 | 
						|
  char ':'
 | 
						|
  return n
 | 
						|
 | 
						|
tagvalue = do
 | 
						|
  -- ptrace "tagvalue"
 | 
						|
  v <- anyChar `manyTill` ((char ',' >> return ()) <|> eolof)
 | 
						|
  return $ strip $ reverse $ dropWhile (==',') $ reverse $ strip v
 | 
						|
 | 
						|
ledgerDateSyntaxToTags :: String -> String
 | 
						|
ledgerDateSyntaxToTags = regexReplaceBy "\\[[-.\\/0-9=]+\\]" replace
 | 
						|
  where
 | 
						|
    replace ('[':s) | lastDef ' ' s == ']' = replace' $ init s
 | 
						|
    replace s = s
 | 
						|
 | 
						|
    replace' s | isdate s = datetag s
 | 
						|
    replace' ('=':s) | isdate s = date2tag s
 | 
						|
    replace' s | last s =='=' && isdate (init s) = datetag (init s)
 | 
						|
    replace' s | length ds == 2 && isdate d1 && isdate d1 = datetag d1 ++ date2tag d2
 | 
						|
      where 
 | 
						|
        ds = splitAtElement '=' s
 | 
						|
        d1 = headDef "" ds
 | 
						|
        d2 = lastDef "" ds
 | 
						|
    replace' s = s
 | 
						|
 | 
						|
    isdate = isJust . parsedateM
 | 
						|
    datetag s = "date:"++s++", "
 | 
						|
    date2tag s = "date2:"++s++", "
 | 
						|
    
 | 
						|
#ifdef TESTS
 | 
						|
test_ledgerDateSyntaxToTags = do
 | 
						|
     assertEqual "date2:2012/11/28, " $ ledgerDateSyntaxToTags "[=2012/11/28]"
 | 
						|
#endif       
 | 
						|
  
 | 
						|
dateValueFromTags, date2ValueFromTags :: [Tag] -> Maybe String
 | 
						|
dateValueFromTags  ts = maybe Nothing (Just . snd) $ find ((=="date") . fst) ts
 | 
						|
date2ValueFromTags ts = maybe Nothing (Just . snd) $ find ((=="date2") . fst) ts
 | 
						|
 | 
						|
    
 | 
						|
{- old hunit tests
 | 
						|
 | 
						|
test_Hledger_Read_JournalReader = TestList $ concat [
 | 
						|
    test_number,
 | 
						|
    test_amountp,
 | 
						|
    test_spaceandamountormissing,
 | 
						|
    test_tagcomment,
 | 
						|
    test_inlinecomment,
 | 
						|
    test_commentlines,
 | 
						|
    test_ledgerDateSyntaxToTags,
 | 
						|
    test_postingp,
 | 
						|
    test_transaction,
 | 
						|
    [
 | 
						|
   "modifiertransaction" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx modifiertransaction "= (some value expr)\n some:postings  1\n")
 | 
						|
 | 
						|
  ,"periodictransaction" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx periodictransaction "~ (some period expr)\n some:postings  1\n")
 | 
						|
 | 
						|
  ,"directive" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx directive "!include /some/file.x\n")
 | 
						|
     assertParse (parseWithCtx nullctx directive "account some:account\n")
 | 
						|
     assertParse (parseWithCtx nullctx (directive >> directive) "!account a\nend\n")
 | 
						|
 | 
						|
  ,"commentline" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx commentline "; some comment \n")
 | 
						|
     assertParse (parseWithCtx nullctx commentline " \t; x\n")
 | 
						|
     assertParse (parseWithCtx nullctx commentline ";x")
 | 
						|
 | 
						|
  ,"date" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx date "2011/1/1")
 | 
						|
     assertParseFailure (parseWithCtx nullctx date "1/1")
 | 
						|
     assertParse (parseWithCtx nullctx{ctxYear=Just 2011} date "1/1")
 | 
						|
 | 
						|
  ,"datetime" ~: do
 | 
						|
      let p = do {t <- datetime; eof; return t}
 | 
						|
          bad = assertParseFailure . parseWithCtx nullctx p
 | 
						|
          good = assertParse . parseWithCtx nullctx p
 | 
						|
      bad "2011/1/1"
 | 
						|
      bad "2011/1/1 24:00:00"
 | 
						|
      bad "2011/1/1 00:60:00"
 | 
						|
      bad "2011/1/1 00:00:60"
 | 
						|
      good "2011/1/1 00:00"
 | 
						|
      good "2011/1/1 23:59:59"
 | 
						|
      good "2011/1/1 3:5:7"
 | 
						|
      -- timezone is parsed but ignored
 | 
						|
      let startofday = LocalTime (fromGregorian 2011 1 1) (TimeOfDay 0 0 (fromIntegral 0))
 | 
						|
      assertParseEqual (parseWithCtx nullctx p "2011/1/1 00:00-0800") startofday
 | 
						|
      assertParseEqual (parseWithCtx nullctx p "2011/1/1 00:00+1234") startofday
 | 
						|
 | 
						|
  ,"defaultyeardirective" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx defaultyeardirective "Y 2010\n")
 | 
						|
     assertParse (parseWithCtx nullctx defaultyeardirective "Y 10001\n")
 | 
						|
 | 
						|
  ,"historicalpricedirective" ~:
 | 
						|
    assertParseEqual (parseWithCtx nullctx historicalpricedirective "P 2004/05/01 XYZ $55.00\n") (HistoricalPrice (parsedate "2004/05/01") "XYZ" $ usd 55)
 | 
						|
 | 
						|
  ,"ignoredpricecommoditydirective" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx ignoredpricecommoditydirective "N $\n")
 | 
						|
 | 
						|
  ,"defaultcommoditydirective" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx defaultcommoditydirective "D $1,000.0\n")
 | 
						|
 | 
						|
  ,"commodityconversiondirective" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx commodityconversiondirective "C 1h = $50.00\n")
 | 
						|
 | 
						|
  ,"tagdirective" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx tagdirective "tag foo \n")
 | 
						|
 | 
						|
  ,"endtagdirective" ~: do
 | 
						|
     assertParse (parseWithCtx nullctx endtagdirective "end tag \n")
 | 
						|
     assertParse (parseWithCtx nullctx endtagdirective "pop \n")
 | 
						|
 | 
						|
  ,"accountname" ~: do
 | 
						|
    assertBool "accountname parses a normal accountname" (isRight $ parsewith accountname "a:b:c")
 | 
						|
    assertBool "accountname rejects an empty inner component" (isLeft $ parsewith accountname "a::c")
 | 
						|
    assertBool "accountname rejects an empty leading component" (isLeft $ parsewith accountname ":b:c")
 | 
						|
    assertBool "accountname rejects an empty trailing component" (isLeft $ parsewith accountname "a:b:")
 | 
						|
 | 
						|
  ,"leftsymbolamount" ~: do
 | 
						|
    assertParseEqual (parseWithCtx nullctx leftsymbolamount "$1")  (usd 1 `withPrecision` 0)
 | 
						|
    assertParseEqual (parseWithCtx nullctx leftsymbolamount "$-1") (usd (-1) `withPrecision` 0)
 | 
						|
    assertParseEqual (parseWithCtx nullctx leftsymbolamount "-$1") (usd (-1) `withPrecision` 0)
 | 
						|
 | 
						|
  ,"amount" ~: do
 | 
						|
     let -- | compare a parse result with an expected amount, showing the debug representation for clarity
 | 
						|
         assertAmountParse parseresult amount =
 | 
						|
             (either (const "parse error") showAmountDebug parseresult) ~?= (showAmountDebug amount)
 | 
						|
     assertAmountParse (parseWithCtx nullctx amountp "1 @ $2")
 | 
						|
       (num 1 `withPrecision` 0 `at` (usd 2 `withPrecision` 0))
 | 
						|
 | 
						|
 ]]
 | 
						|
-}
 | 
						|
 |