diff --git a/Graph.hs b/Graph.hs new file mode 100644 --- /dev/null +++ b/Graph.hs @@ -0,0 +1,307 @@ +-- +-- Copyright (c) 2006 Don Stewart - http://www.cse.unsw.edu.au/~dons +-- GPL version 2 or later (see http://www.gnu.org/copyleft/gpl.html) +-- + +-- +-- darcs-graph: +-- generate .png graphs of commit activity of a darcs repository, +-- including a 7 day sliding average +-- +-- requires gnuplot +-- + +import Data.List +import Data.Maybe +import qualified Data.IntMap as I + +import Data.ByteString.Char8 (ByteString,append,pack,unpack) +import qualified Data.ByteString.Char8 as C + +import Control.Exception (bracket,handle) +import Control.Monad (when) + +import Foreign.C.Error +import Foreign.Storable (peek) +import Foreign.Ptr (Ptr, nullPtr) +import Foreign.Marshal (alloca) + +import System.Console.GetOpt +import System.Environment (getArgs) +import System.Posix.Internals +import System.IO.Error (modifyIOError, ioeSetFileName) +import System.IO +import System.IO.Unsafe +import System.Time +import System.Directory +import System.Process + +tmp :: FilePath +tmp = unsafePerformIO $ getTemporaryDirectory + +data Flag = DateFlag String | YFlag Int | Help + deriving (Show,Eq) + +options :: [OptDescr Flag] +options = [ + Option ['f'] ["filter"] (ReqArg (\s -> DateFlag s) "DATE") + "Don't display patches before date. Date is in format \"yyymmdd\"", + Option ['y'] ["y"] (ReqArg (\s -> YFlag (read s)) "INT") + "Vertical scale of graphs. Integer.", + Option ['h'] ["help"] (NoArg Help) + "Display this help" + ] + +usage :: String +usage = usageInfo "usage: darcs-graph [options] repo\n" options + +readOptions :: (Monad m) => [String] -> m ([Flag], [String]) +readOptions args = + case getOpt Permute options args of + (o, n, []) -> return (o, n) + (_, _, errs) -> fail $ unlines errs + +getFilter :: [Flag] -> Maybe ByteString +getFilter l = + let l' = [s | (DateFlag s) <- l] + in if null l' then Nothing else Just . pack . head $ l' + +getYFlag :: [Flag] -> Maybe Int +getYFlag l = + let l' = [i | (YFlag i) <- l] + in if null l' then Nothing else Just . head $ l' + +data Range = Small | Big | Normal + deriving Eq + +-- let's go +main :: IO () +main = do + args <- getArgs + (flags, remaining) <- readOptions args + when (null remaining || length remaining > 1 || Help `elem` flags) $ error usage + let path = pack . head $ remaining + mfilter = getFilter flags + mymax = getYFlag flags + + -- aquire some temp files, make sure to clean them up afterwards + bracket + (do x <- openTempFile tmp "darcs-graph.data" + y <- openTempFile tmp "darcs-graph-average.data" + return (x,y)) + (\((f,_),(g,_)) -> removeFile f >> removeFile g) $ \((f,h),(g,i)) -> do + + -- read patches dir, count patch dates, and write to temp file + ps <- readDir (path `append` pack "/_darcs/patches/") + + let stats' = uniq . sort . map (C.take 8) . filter ignore $ ps + + -- filter out stats earlier than 'yyyymmdd' + let stats | (Just date) <- mfilter = filter (\(x,_) -> x > date) stats' + | otherwise = stats' + + when (null stats) $ error $ "no patches found in: "++unpack path + (C.hPutStr h . C.unlines . map fmt) stats >> hClose h + + -- now work out the sliding average, and write it out too + let days = enumDates (toClock . fst . head $ stats) (toClock . fst . last $ stats) + avrg = sliding (map readFst stats) (map toInt days) + (C.hPutStr i . C.unlines . map fmt') avrg >> hClose i + + -- now run gnuplot on the result + let proj = (unpack . basename $ path) + script = gnuplotScript f -- handle small repos + -- can't generate average with less than 7 points, + -- and the sliding line needs 3 points to plot csplines + (if length days >= window && length avrg >= 3 + then Just g + else Nothing) + + (if length days < 120 + then Small + else if length days > 2500 + then Big + else Normal) -- only print days or months if range is ok + proj + mymax + + (ih,_,eh,pid) <- handle + (\e -> error $ "Couldn't fork gnuplot: " ++ show e) + (do mgnu <- findExecutable "gnuplot" + case mgnu of + Nothing -> error "Cannot find gnuplot" + Just gnuplot -> runInteractiveCommand gnuplot) + + hPutStrLn ih script >> hClose ih -- write into gnuplot + hGetContents eh >>= putStr -- dump any error output it produces + waitForProcess pid + + putStrLn $ "Output written to: " ++ tmp proj ++ "-commits.png" + + where + readFst (a,b) = ((fst . fromJust . C.readInt) a, b) + uniq = map (\n -> (head n, length $ n)) . group + + fmt (s,n) = C.joinWithChar ' ' s (pack . show $ n) + fmt' (n,d) = C.joinWithChar ' ' (pack.show $ n) (pack.show $ d) + + ignore f = f /= pack "pending" + && f /= pack "unrevert" + && not (pack "." `C.isPrefixOf` f) + +------------------------------------------------------------------------ +-- Dealing with clock times + +-- +-- enumerate all the days, as ClockTimes, between the two dates +-- +enumDates :: ClockTime -> ClockTime -> [ClockTime] +enumDates d0 dn = map (\d -> addToClockTime (TimeDiff 0 0 d 0 0 0 0) d0) [0 .. days] + where + t = diffClockTimes dn d0 + days = floor (((fromIntegral $ tdSec t) / 60 / 60 / 24) :: Double) + +-- +-- convert a date packed in a bytestring to a ClockTime +-- yyyymmdd format. +-- +toClock :: ByteString -> ClockTime +toClock x = toClockTime $ CalendarTime { + ctYear = y, + ctMonth = toEnum (m-1) :: Month, + ctDay = d, + ctHour = 0, ctMin = 0, ctSec = 0, ctPicosec = 0, + ctWDay = undefined, ctYDay = undefined, + ctTZName = "GMT", ctTZ = 0 , ctIsDST = False + } + where (y,m,d) = split x + + -- read the bytestring as a triple of yyyymmdd + split s = let a = fst . fromJust . C.readInt . C.take 4 $ s + b = fst . fromJust . C.readInt . C.drop 4 . C.take 6 $ s + c = fst . fromJust . C.readInt . C.drop 6 . C.take 8 $ s + in (a,b,c) + +-- +-- convert a ClockTime back to an Int in yyyymmdd format +-- +toInt :: ClockTime -> Int +toInt ct = read $ show yyyy ++ show0 mm ++ show0 dd + where yyyy = ctYear cl + mm = fromEnum (ctMonth cl) + 1 + dd = ctDay cl + + cl = unsafePerformIO (toCalendarTime ct) + show0 n | n < 10 && n >= 0 = '0' : show n + | otherwise = show n + +-- sliding average window +window :: Int +window = 7 + +-- +-- compute the 7-day sliding average, starting with a sparse sequence +-- +sliding :: [(Int,Int)] -> [Int] -> [(Int,Double)] +sliding [] _ = [] +sliding xs days = [ (i,slidingAv i) | i <- days' ] + where + m = window `div` 2 -- 1/2 n + + days' = drop m . take (max 0 (length days - window+m+1)) $ days + table = I.fromList xs :: I.IntMap Int -- to handle missing elems easily + + slidingAv :: Int -> Double + slidingAv i = fromIntegral (sum seqN) / fromIntegral window + where seqN = map (\j -> I.findWithDefault 0 j table) [i-m..i+(window-m-1)] + +-- +-- generate the gnuplot script. only generate the avergage line, if +-- there repo day range is larger than a window +-- +gnuplotScript :: FilePath -> Maybe FilePath -> Range -> String -> Maybe Int -> String +gnuplotScript f mg range p mymax = header ++ case mg of + Nothing -> "plot \""++f++"\" using 1:2 with points pointsize 0.5 pointtype 2\n" + Just g -> "plot \"" ++ + f++"\" using 1:2 with points pointsize 0.5 pointtype 2, \"" ++ + g++"\" using 1:2 smooth csplines 2\n" + + where header = unlines + ["set xdata time" + ,"set timefmt \"%Y%m%d\"" + ,case range of + Small -> "set format x\"%y%m%d\"" + Normal -> "set format x\"%y%m\"" + Big -> "set format x\"%y\"" + ,"set size 1,0.4" + ,"set mxtics 0" + ,"set xtics nomirror" + ,"set ytics nomirror" + ,"set border 3" + ,"set yrange [0:" ++ (if isNothing mymax then "*" else show . fromJust $ mymax) ++ "]" + ,"set title \""++p++" commits per day and 7-day sliding average\"" + ,"unset key" + ,"set ylabel \"commits per day\"" + +-- To use a TTF font, set the GDFONTPATH=/home/dons/TTF, and uncomment +-- this line: +-- ,"set terminal png font Vera 9 xffffff x000000 x404040 xd0d0d0 x0000ff" + + ,"set terminal png small xffffff x000000 x404040 xd0d0d0 x0000ff" + ,"set output \"" ++ tmp p ++"-commits.png\""] + +-- +-- ByteString utilities +-- + +-- | Packed string version of basename +basename :: ByteString -> ByteString +basename fps = case C.elemIndexEnd '/' s of + Nothing -> fps + Just i -> C.drop (i+1) s + where s = C.reverse . C.dropWhile (=='/') . C.reverse $ fps + +-- +-- | Packed version of get directory contents. super fast +-- +readDir :: ByteString -> IO [ByteString] +readDir path = do + modifyIOError (`ioeSetFileName` (unpack path)) $ + alloca $ \ ptr_dEnt -> + bracket + (C.useAsCString path $ \s -> + throwErrnoIfNullRetry desc (c_opendir s)) + (\p -> throwErrnoIfMinus1_ desc (c_closedir p)) + (\p -> loop ptr_dEnt p) + where + desc = "readDir" + + loop :: Ptr (Ptr CDirent) -> Ptr CDir -> IO [ByteString] + loop ptr_dEnt dir = do + resetErrno + r <- readdir dir ptr_dEnt + if (r == 0) + then do dEnt <- peek ptr_dEnt + if (dEnt == nullPtr) + then return [] + else do -- copy entry out before we free: + entry <- C.copyCString =<< d_name dEnt + C.length entry `seq` return () -- strictify + freeDirEnt dEnt + entries <- loop ptr_dEnt dir + return $! (entry:entries) + + else do errno <- getErrno + if (errno == eINTR) + then loop ptr_dEnt dir + else do let (Errno eo) = errno + if (eo == end_of_dir) + then return [] + else throwErrno desc + +-- useful +infixr 6 + +() :: FilePath -> FilePath -> FilePath +[] b = b +a b = a ++ "/" ++ b diff --git a/LICENSE b/LICENSE new file mode 100644 --- /dev/null +++ b/LICENSE @@ -0,0 +1,342 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. 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If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,3 @@ +#!/usr/bin/env runhaskell +import Distribution.Simple +main = defaultMainWithHooks defaultUserHooks diff --git a/darcs-graph.cabal b/darcs-graph.cabal new file mode 100644 --- /dev/null +++ b/darcs-graph.cabal @@ -0,0 +1,12 @@ +Name: darcs-graph +Version: 0.1 +License: GPL +License-file: LICENSE +Author: Don Stewart +Maintainer: dons@cse.unsw.edu.au +Build-Depends: base, fps>=0.7 + +Executable: darcs-graph +Main-is: Graph.hs +ghc-options: -fglasgow-exts -Wall -Werror -O -funbox-strict-fields -optl-Wl,-s +