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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. + diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,5 @@ +#!/usr/bin/env runhaskell + +import qualified Distribution.Simple + +main = Distribution.Simple.defaultMain diff --git a/changelog b/changelog new file mode 100644 --- /dev/null +++ b/changelog @@ -0,0 +1,5 @@ +2013-07-16 Dr. Alistair Ward + +0.0.0.1 + * First version of the package. + diff --git a/copyright b/copyright new file mode 100644 --- /dev/null +++ b/copyright @@ -0,0 +1,11 @@ +Author: + Dr. Alistair Ward . + +Copyright: + Copyright (C) 2010-2011 Dr. Alistair Ward. All Rights Reserved. + +Home-page: + http://functionalley.eu + +License: + GNU GENERAL PUBLIC LICENSE Version 3; see '/usr/share/common-licenses/GPL-3' or '/usr/share/doc/licenses/gpl-3.0.txt' where available, or the local packaged file 'LICENSE'. diff --git a/fishfood.cabal b/fishfood.cabal new file mode 100644 --- /dev/null +++ b/fishfood.cabal @@ -0,0 +1,53 @@ +--Package-properties +Name: fishfood +Version: 0.0.0.1 +Cabal-Version: >= 1.6 +Copyright: (C) 2013 Dr. Alistair Ward +License: GPL +License-file: LICENSE +Author: Dr. Alistair Ward +Stability: Unstable interface, incomplete features. +Synopsis: Finds the file-size frequency-distribution for the referenced files. +Build-Type: Simple +Description: Counts the number of files in a set of bins, each of which holds only those files which fall within a specific size-interval. +Category: Utils +Tested-With: GHC == 7.4 +Homepage: http://functionalley.eu +Maintainer: fishfood functionalley eu +Bug-reports: fishfood functionalley eu +Data-files: +Extra-Source-Files: changelog copyright makefile + +flag llvm + Description: Whether the 'llvm' compiler-backend has been installed and is required for code-generation. + manual: True + default: False + +Executable fishfood + hs-source-dirs: src + Main-Is: Main.hs + Other-modules: + FishFood.Data.CommandOptions, + FishFood.Data.File + + Build-depends: + base == 4.*, + Cabal >= 1.6 && < 2, + containers, + factory >= 0.2.0.5, + toolshed >= 0.13, + unix + + GHC-options: -Wall + + if impl(ghc >= 7.4.1) + GHC-prof-options: -prof -fprof-auto -fprof-cafs + else + GHC-prof-options: -prof -auto-all -caf-all + + if impl(ghc >= 7.0) + GHC-options: -rtsopts + + if flag(llvm) + GHC-options: -fllvm + diff --git a/makefile b/makefile new file mode 100644 --- /dev/null +++ b/makefile @@ -0,0 +1,63 @@ +# Copyright (C) 2010 Dr. Alistair Ward +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +.PHONY: all build check clean clobber configure copy haddock help hlint install prof sdist + +PACKAGE_NAME=fishfood + +all: install + +install: build haddock + @[ -z "$$CABAL_INSTALL_OPTIONS" ] || echo "INFO: CABAL_INSTALL_OPTIONS='$$CABAL_INSTALL_OPTIONS'" + runhaskell Setup $@ $$CABAL_INSTALL_OPTIONS + +prof: + CABAL_CONFIGURE_OPTIONS="--enable-executable-profiling $$CABAL_CONFIGURE_OPTIONS" make build + +copy: build + @[ -z "$$CABAL_COPY_OPTIONS" ] || echo "INFO: CABAL_COPY_OPTIONS='$$CABAL_COPY_OPTIONS'" + runhaskell Setup $@ $$CABAL_COPY_OPTIONS + +build: configure + @[ -z "$$CABAL_BUILD_OPTIONS" ] || echo "INFO: CABAL_BUILD_OPTIONS='$$CABAL_BUILD_OPTIONS'" + runhaskell Setup $@ $$CABAL_BUILD_OPTIONS + +configure: $(PACKAGE_NAME).cabal Setup.hs + @[ -z "$$CABAL_CONFIGURE_OPTIONS" ] || echo "INFO: CABAL_CONFIGURE_OPTIONS='$$CABAL_CONFIGURE_OPTIONS'" + runhaskell Setup $@ $$CABAL_CONFIGURE_OPTIONS #--user + +haddock: configure + PATH=~/.cabal/bin:$$PATH runhaskell Setup $@ --hyperlink-source --executables #Amend path to find 'HsColour', as required for 'hyperlink-source'. + +hlint: + @$@ src/ + +sdist: + runhaskell Setup $@ + +check: sdist + cabal upload --check --verbose=3 dist/*.tar.gz; + +clean: + runhaskell Setup $@ + rm -rf 'debian/usr/' 'debian/DEBIAN/md5sums' + find src -type f \( -name '*.hc' -o -name '*.hcr' -o -name '*.hi' -o -name '*.o' \) -delete + +clobber: clean + rm -f -- *.rpm *.deb + +help: + @grep '^[a-zA-Z].*:' makefile | sed -e 's/:.*//' + diff --git a/src/FishFood/Data/CommandOptions.hs b/src/FishFood/Data/CommandOptions.hs new file mode 100644 --- /dev/null +++ b/src/FishFood/Data/CommandOptions.hs @@ -0,0 +1,86 @@ +{- + Copyright (C) 2013 Dr. Alistair Ward + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} +{- | + [@AUTHOR@] Dr. Alistair Ward + + [@DESCRIPTION@] + + * Defines options for program-operation. + + * Defines an appropriate default value, which is expected to be over-ridden on the command-line. + + * Self-validates. +-} + +module FishFood.Data.CommandOptions( +-- * Types +-- ** Data-types + CommandOptions( +-- MkCommandOptions, + getBinSize, + getIncludeEmpty, + getNDecimalDigits, + getVerbosity + ) +) where + +import qualified Data.Maybe +import qualified Distribution.Verbosity +import qualified FishFood.Data.File as Data.File +import qualified ToolShed.Defaultable +import qualified ToolShed.SelfValidate + +-- | Declares a record to contain command-line options. +data CommandOptions = MkCommandOptions { + getBinSize :: Maybe Data.File.FileSize, -- ^ The intervals into which file-sizes are categorised. + getIncludeEmpty :: Bool, -- ^ Whether to display empty bins. + getNDecimalDigits :: Int, -- ^ The precision to which fractional auxiliary data is displayed. + getVerbosity :: Distribution.Verbosity.Verbosity -- ^ The threshold for ancillary information-output. +} deriving Show + +instance ToolShed.Defaultable.Defaultable CommandOptions where + defaultValue = MkCommandOptions { + getBinSize = Nothing, --Interpreted as one standard-deviation. + getIncludeEmpty = False, + getNDecimalDigits = 3, + getVerbosity = Distribution.Verbosity.normal + } + +instance ToolShed.SelfValidate.SelfValidator CommandOptions where + getErrors commandOptions@MkCommandOptions { + getBinSize = binSize, + getNDecimalDigits = nDecimalDigits + } = map snd $ filter fst [ + ( + Data.Maybe.maybe False (<= 0) binSize, + "the bin-size must exceed zero; " ++ show commandOptions ++ "." + ), ( + nDecimalDigits < 1, + "the number of decimal digits must exceed zero; " ++ show commandOptions ++ "." + ), + let + maxNDecimalDigits = floor $ fromIntegral ( + floatDigits ( + undefined :: Double --CAVEAT: the actual type could be merely 'Float', but that's currently unknown. + ) + ) * (logBase 10 2 :: Double) + in ( + nDecimalDigits > maxNDecimalDigits, + "the number of decimal digits shouldn't exceed " ++ show maxNDecimalDigits ++ "; " ++ show commandOptions ++ "." + ) + ] + diff --git a/src/FishFood/Data/File.hs b/src/FishFood/Data/File.hs new file mode 100644 --- /dev/null +++ b/src/FishFood/Data/File.hs @@ -0,0 +1,60 @@ +{- + Copyright (C) 2013 Dr. Alistair Ward + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} +{- | + [@AUTHOR@] Dr. Alistair Ward + + [@DESCRIPTION@] Allows one to find the size of a file, & to gather statistics on a population. +-} + +module FishFood.Data.File( +-- * Types +-- ** Type-synonyms + FileSize, +-- * Functions + findSize, + getFileSizeStatistics +) where + +import qualified Control.Exception +import qualified Factory.Math.Statistics +import qualified System.IO +import qualified System.IO.Error +import qualified System.Posix.Files + +-- | A type-synonym specifically to hold file-sizes (in bytes). +type FileSize = Integer --Matches the return-type of 'IO.hFileSize'. + +-- | Get the size of the specified file. +findSize :: System.IO.FilePath -> IO FileSize +findSize f = do + stat <- System.Posix.Files.getFileStatus f --CAVEAT: throws if the user is unauthorised, or the file is non-existent. + + if System.Posix.Files.isRegularFile stat + then System.IO.withFile f System.IO.ReadMode System.IO.hFileSize + else {-non-directory-} Control.Exception.throw $ System.IO.Error.mkIOError System.IO.Error.illegalOperationErrorType ("file=" ++ show f ++ " has unexpected type") Nothing (Just f) + +-- | Acquire statistics related to a list of file-sizes. +getFileSizeStatistics + :: (Fractional mean, Floating standardDeviation) + => [FileSize] + -> (Int, mean, standardDeviation) -- ^ (The population-size, Mean size, Standard-deviation). +getFileSizeStatistics fileSizes = ( + length fileSizes, + Factory.Math.Statistics.getMean fileSizes, + Factory.Math.Statistics.getStandardDeviation fileSizes + ) + diff --git a/src/Main.hs b/src/Main.hs new file mode 100644 --- /dev/null +++ b/src/Main.hs @@ -0,0 +1,193 @@ +{- + Copyright (C) 2013 Dr. Alistair Ward + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} +{- | + [@AUTHOR@] Dr. Alistair Ward + + [@DESCRIPTION@] + + * Contains the entry-point of the application. + + * Processes the command-line arguments. +-} + +module Main(main) where + +import Control.Applicative((<$>),(<*>)) +import Control.Arrow((&&&)) +import qualified Control.Monad +import qualified Data.List +import qualified Data.Map +import qualified Data.Maybe +import qualified Data.Version +import qualified Distribution.Package +import qualified Distribution.Text +import qualified Distribution.Verbosity +import qualified Distribution.Version +import qualified FishFood.Data.CommandOptions as Data.CommandOptions +import qualified FishFood.Data.File as Data.File +import qualified Paths_fishfood as Paths --Either local stub, or package-instance autogenerated by 'Setup.hs build'. +import qualified System.Console.GetOpt as G +import qualified System.Environment +import qualified System.Exit +import qualified System.IO +import qualified System.IO.Error +import qualified Text.Printf +import qualified ToolShed.Defaultable +import qualified ToolShed.SelfValidate + +-- | Used to thread user-defined command-line options, though the list of functions which implement them. +type CommandLineAction = Data.CommandOptions.CommandOptions -> IO Data.CommandOptions.CommandOptions --Supplied as the type-argument to 'G.OptDescr'. + +-- | On failure to parse the specified string, returns an explanatory error. +read' :: Read a => String -> String -> a +read' errorMessage s = case reads s of + [(x, "")] -> x + _ -> error $ errorMessage ++ show s + +-- | On failure to parse a command-line argument, returns an explanatory error. +readCommandArg :: Read a => String -> a +readCommandArg = read' "failed to parse command-line argument " + +-- | Reads a bounded integral from the command-line, guarding against overflow. +readBoundedIntegral :: Integral i => String -> i +readBoundedIntegral s + | fromIntegral bounded /= unbounded = error $ "integral value exceeds permissible bounds; " ++ show unbounded ++ "." + | otherwise = bounded + where + unbounded = readCommandArg s + bounded = fromInteger unbounded + +{- | + * Parses the command-line options, which over-ride default values. + + * Any arguments which follow known options, are interpreted as file-names. + + * If the specified file-name is /-/, then the actual file-names are read from /standard-input/, to augment any other non-options specified. +-} +main :: IO () +main = do + progName <- System.Environment.getProgName + + let + defaultCommandOptions :: Data.CommandOptions.CommandOptions + defaultCommandOptions = ToolShed.Defaultable.defaultValue + + optDescrList :: [G.OptDescr CommandLineAction] + optDescrList = [ +-- String [String] (G.ArgDescr CommandLineAction) String + G.Option "?" ["help"] (G.NoArg $ const printUsage) "Display this help, & then exit.", + G.Option "" ["verbosity"] ( + setVerbosity `G.ReqArg` show [minBound :: Distribution.Verbosity.Verbosity .. maxBound] + ) ("Define the log-level; default '" ++ show (Data.CommandOptions.getVerbosity defaultCommandOptions) ++ "'." + ), + G.Option "v" ["version"] (G.NoArg $ const printVersion) "Print version-information, & then exit.", + G.Option "b" ["binSize"] (setBinSize `G.ReqArg` "") "The range in bytes, accepted by any one of the bins into which file-sizes are categorised; defaulting to one standard-deviation.", + G.Option "d" ["nDecimalDigits"] (setNDecimalDigits `G.ReqArg` "") ("The precision to which fractional auxiliary data is displayed; default " ++ show (Data.CommandOptions.getNDecimalDigits defaultCommandOptions) ++ "."), + G.Option "z" ["includeEmpty"] (setIncludeEmpty `G.OptArg` "") ("Whether to display empty bins; default '" ++ show (Data.CommandOptions.getIncludeEmpty defaultCommandOptions) ++ "'.") + ] where + setBinSize, setNDecimalDigits, setVerbosity :: String -> CommandLineAction + setBinSize arg commandOptions = return {-to IO-monad-} commandOptions { Data.CommandOptions.getBinSize = Just $ readCommandArg arg } + setNDecimalDigits arg commandOptions = return {-to IO-monad-} commandOptions { Data.CommandOptions.getNDecimalDigits = readBoundedIntegral arg } + setVerbosity arg commandOptions = return {-to IO-monad-} commandOptions { Data.CommandOptions.getVerbosity = readCommandArg arg } + + setIncludeEmpty :: Maybe String -> CommandLineAction + setIncludeEmpty arg commandOptions = return {-to IO-monad-} commandOptions { Data.CommandOptions.getIncludeEmpty = Data.Maybe.maybe True readCommandArg arg } + + printVersion, printUsage :: IO Data.CommandOptions.CommandOptions + printVersion = Text.Printf.printf "%s\n\n%s %s.\n%s.\n%s.\n%s %s.\n" packageName "Copyright (C) 2013" author "This program comes with ABSOLUTELY NO WARRANTY" "This is free software, & you are welcome to redistribute it under certain conditions" "Written by" author >> System.Exit.exitWith System.Exit.ExitSuccess where + packageIdentifier :: Distribution.Package.PackageIdentifier + packageIdentifier = Distribution.Package.PackageIdentifier { + Distribution.Package.pkgName = Distribution.Package.PackageName progName, --CAVEAT: coincidentally. + Distribution.Package.pkgVersion = Distribution.Version.Version (Data.Version.versionBranch Paths.version) [] + } + + packageName, author :: String + packageName = Distribution.Text.display packageIdentifier + author = "Dr. Alistair Ward" + + printUsage = System.IO.hPutStrLn System.IO.stderr ("Usage:\t" ++ G.usageInfo progName optDescrList ++ " [ ...]") >> System.Exit.exitWith System.Exit.ExitSuccess + + args <- System.Environment.getArgs + + case G.getOpt G.RequireOrder optDescrList args of + (commandLineActions, nonOptions, [{-errors-}]) -> do + commandOptions <- Data.List.foldl' (>>=) (return {-to IO-monad-} ToolShed.Defaultable.defaultValue) commandLineActions + + if not $ ToolShed.SelfValidate.isValid commandOptions + then fail $ ToolShed.SelfValidate.getFirstError commandOptions + else if null nonOptions + then fail "zero file-paths specified" + else let + standardInputProxy = "-" + in do + filePaths <- if standardInputProxy `elem` nonOptions + then let + getFilePaths :: IO [String] + getFilePaths = do + eof <- System.IO.isEOF + + if eof + then return {-to IO-monad-} [] + else {-more to read-} (:) <$> getLine <*> getFilePaths {-recurse-} + in do + filePaths <- (filter (/= standardInputProxy) nonOptions ++) <$> getFilePaths + + if null filePaths + then fail "zero file-paths" + else return filePaths + else {-real fileNames-} return {-to IO-monad-} nonOptions + + let (nDecimalDigits, verbosity) = Data.CommandOptions.getNDecimalDigits &&& Data.CommandOptions.getVerbosity $ commandOptions --Deconstruct. + + Control.Monad.when (verbosity == maxBound) $ System.IO.hPrint System.IO.stderr filePaths --CAVEAT: potentially very long. + + fileSizes <- mapM Data.File.findSize $ Data.List.nub filePaths --De-duplicate the file-paths, & find the corresponding file-sizes. + + let + mean, standardDeviation :: Double + (nFiles, mean, standardDeviation) = Data.File.getFileSizeStatistics fileSizes + + columnHeaders :: [String] + columnHeaders = ["Bin", "Frequency"] + + columnWidths :: [Int] + columnWidths = map length columnHeaders + + formatLine :: Data.File.FileSize -> Int -> IO () + formatLine bin = Text.Printf.printf "%*d\t%*d\n" (head columnWidths) bin (last columnWidths) + + Control.Monad.when (verbosity >= Distribution.Verbosity.verbose) $ do + Control.Monad.void $ Text.Printf.hPrintf System.IO.stderr "Files=%d, mean=%.*f, standard-deviation=%.*f\n" nFiles nDecimalDigits mean nDecimalDigits standardDeviation --Print statistics. + + let tabulate = Data.List.intercalate "\t" + + Text.Printf.hPrintf System.IO.stderr "%s\n%s\n" (tabulate columnHeaders) (tabulate $ map (`replicate` '=') columnWidths) --Print column-headers. + + if standardDeviation == 0 + then formatLine 0 nFiles + else let + bins = map (`div` Data.Maybe.fromMaybe (round standardDeviation) (Data.CommandOptions.getBinSize commandOptions)) fileSizes + + frequencyDistribution + | Data.CommandOptions.getIncludeEmpty commandOptions = Data.Map.fromList $ [0 .. maximum bins] `zip` repeat 0 + | otherwise = Data.Map.empty + in mapM_ (uncurry formatLine) . Data.Map.toList $ foldr ( + uncurry (Data.Map.insertWith (+)) + ) frequencyDistribution $ bins `zip` repeat 1 + + (_, _, errors) -> System.IO.Error.ioError . System.IO.Error.userError $ concatMap init {-chop-} errors +