hledger/hledger/Hledger/Cli/Histogram.hs
Simon Michael 621a91807e rename actual/effective dates to primary/secondary
The command-line flag is now --date2. Alternate spellings --effective and --aux-date
are accepted for compatibility.
2012-12-06 04:43:41 +00:00

51 lines
1.6 KiB
Haskell

{-|
Print a histogram report.
-}
module Hledger.Cli.Histogram
where
import Data.List
import Data.Maybe
import Data.Ord
import Text.Printf
import Hledger.Cli.Options
import Hledger.Data
import Hledger.Reports
import Hledger.Query
import Prelude hiding (putStr)
import Hledger.Utils.UTF8IOCompat (putStr)
barchar = '*'
-- | Print a histogram of some statistic per reporting interval, such as
-- number of postings per day.
histogram :: CliOpts -> Journal -> IO ()
histogram CliOpts{reportopts_=ropts} j = do
d <- getCurrentDay
putStr $ showHistogram ropts (queryFromOpts d ropts) j
showHistogram :: ReportOpts -> Query -> Journal -> String
showHistogram opts q j = concatMap (printDayWith countBar) spanps
where
i = intervalFromOpts opts
interval | i == NoInterval = Days 1
| otherwise = i
span = queryDateSpan (date2_ opts) q `orDatesFrom` journalDateSpan j
spans = filter (DateSpan Nothing Nothing /=) $ splitSpan interval span
spanps = [(s, filter (isPostingInDateSpan s) ps) | s <- spans]
-- same as Register
-- should count transactions, not postings ?
-- ps = sortBy (comparing postingDate) $ filterempties $ filter matchapats $ filterdepth $ journalPostings j
ps = sortBy (comparing postingDate) $ filterempties $ filter (q `matchesPosting`) $ journalPostings j
filterempties
| queryEmpty q = id
| otherwise = filter (not . isZeroMixedAmount . pamount)
printDayWith f (DateSpan b _, ts) = printf "%s %s\n" (show $ fromJust b) (f ts)
countBar ps = replicate (length ps) barchar