94 lines
3.1 KiB
Haskell
Executable File
94 lines
3.1 KiB
Haskell
Executable File
#!/usr/bin/env runhaskell
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{-
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generatejournal.hs NUMTXNS NUMACCTS ACCTDEPTH [--chinese|--mixed]
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This generates synthetic journal data for benchmarking & profiling. It
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prints a dummy journal on stdout, with NUMTXNS transactions, one per
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day, using NUMACCTS account names with depths up to ACCTDEPTH. It will
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also contain NUMACCTS P records, one per day. By default it uses only
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ascii characters, with --chinese it uses wide chinese characters, or
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with --mixed it uses both.
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-}
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module Main
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where
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import Data.Char
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import Data.List
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import Data.Time.Calendar
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import Data.Time.LocalTime
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import Numeric
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import System.Environment
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import Text.Printf
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-- import Hledger.Utils.Debug
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main = do
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rawargs <- getArgs
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let (opts,args) = partition (isPrefixOf "-") rawargs
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let [numtxns, numaccts, acctdepth] = map read args :: [Int]
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-- today <- getCurrentDay
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-- let (year,_,_) = toGregorian today
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let d = fromGregorian 2000 1 1
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let dates = iterate (addDays 1) d
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let accts = pair $ cycle $ take numaccts $ uniqueAccountNames opts acctdepth
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mapM_ (\(n,d,(a,b)) -> putStr $ showtxn n d a b) $ take numtxns $ zip3 [1..] dates accts
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let rates = [0.70, 0.71 .. 1.3]
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mapM_ (\(d,rate) -> putStr $ showmarketprice d rate) $ take numtxns $ zip dates (cycle $ rates ++ init (tail (reverse rates)))
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return ()
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showtxn :: Int -> Day -> String -> String -> String
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showtxn txnno date acct1 acct2 =
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printf "%s transaction %d\n %-40s %2d A\n %-40s %2d A\n\n" d txnno acct1 amt acct2 (-amt)
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where
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d = show date
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amt = txnno
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showmarketprice :: Day -> Double -> String
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showmarketprice date rate = printf "P %s A %.2f B\n" (show date) rate
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uniqueAccountNames :: [String] -> Int -> [String]
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uniqueAccountNames opts depth =
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mkacctnames uniquenames
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where
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mkacctnames names = mkacctnamestodepth some ++ mkacctnames rest
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where
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(some, rest) = splitAt depth names
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-- mkacctnamestodepth ["a", "b", "c"] = ["a","a:b","a:b:c"]
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mkacctnamestodepth :: [String] -> [String]
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mkacctnamestodepth [] = []
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mkacctnamestodepth (a:as) = a : map ((a++":")++) (mkacctnamestodepth as)
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uniquenames
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| "--mixed" `elem` opts = concat $ zipWith (\a b -> [a,b]) uniqueNamesHex uniqueNamesWide
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| "--chinese" `elem` opts = uniqueNamesWide
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| otherwise = uniqueNamesHex
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uniqueNamesHex = map hex [1..] where hex = flip showHex ""
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uniqueNamesWide = concat [sequences n wideChars | n <- [1..]]
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-- Get the sequences of specified size starting at each element of a list,
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-- cycling it if needed to fill the last sequence. If the list's elements
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-- are unique, then the sequences will be too.
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sequences :: Show a => Int -> [a] -> [[a]]
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sequences n l = go l
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where
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go [] = []
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go l' = s : go (tail l')
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where
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s' = take n l'
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s | length s' == n = s'
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| otherwise = take n (l' ++ cycle l)
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wideChars = map chr [0x3400..0x4db0]
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pair :: [a] -> [(a,a)]
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pair [] = []
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pair [a] = [(a,a)]
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pair (a:b:rest) = (a,b):pair rest
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-- getCurrentDay :: IO Day
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-- getCurrentDay = do
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-- t <- getZonedTime
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-- return $ localDay (zonedTimeToLocalTime t)
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