inobuild.cabal

Name:                inobuild
Version:             0.1
Synopsis:            Automatic build tool.
Homepage:            http://http://ivy.io/2011/11/29/inobuild.html
License:             BSD3
License-file:        LICENSE
Author:              Clint Moore
Maintainer:          clint@ivy.io
Category:            Development

Build-type:          Simple
Cabal-version:       >=1.2


Executable inobuild
  Main-is: inobuild.hs
  
  Build-depends: hinotify >= 0.3.2
               , base >3
               , bytestring
               , process
               , safe
               , stm

inobuild.hs

{-# LANGUAGE ViewPatterns #-}

module Main where

import Control.Concurrent.STM
import Safe
import System.Environment     (getArgs)
import System.IO
import System.Process
import System.INotify



data RunState = RunState { command :: String
                         , ino :: INotify
                         , directory :: FilePath
                         , is_running :: Bool
                         }

event_handler :: (TVar RunState) -> Event -> IO ()
event_handler _ (Modified True _) = return ()
event_handler rs (Modified _is_dir _) = do
  state <- atomically $ readTVar rs
  case (is_running state) of
    False -> do
      _ <- atomically $ writeTVar rs $ state { is_running = True }
      prc <- runCommand $ command state
      _ <- waitForProcess prc
      atomically $ writeTVar rs $ state { is_running = False }
      return ()
    True -> return ()
event_handler _ _ = return ()

main :: IO ()
main = do
  hSetBuffering stdout NoBuffering
  
  lx <- getArgs
  let (dir,cmd) = ((at lx 0),(at lx 1))
  
  inot <- initINotify
  
  putStrLn $ "Watching " ++ dir ++ " with '" ++ cmd ++ "'"
  
  state_var <- atomically $ newTVar $ RunState cmd inot dir False
  _ <- addWatch inot [Modify] dir (event_handler state_var)
   
  putStrLn "Press any key to exit."
  _ <- getLine
  
  return ()

LICENSE

Copyright (c)2011, Clint Moore

All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.

    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
      disclaimer in the documentation and/or other materials provided
      with the distribution.

    * Neither the name of Clint Moore nor the names of other
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Setup.hs

import Distribution.Simple
main = defaultMain

Just poking at it. Can't really test at the moment for lack of a linux box.

TOOK YA LONG ENOUGH, SHEESH