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{- darcs-monitor - Darcs repository monitor
Copyright © 2007 Antti-Juhani Kaijanaho
Copyright © 2007 Benja Fallenstein
Copyright © 2007 Benjamin Franksen
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 2 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, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-}
module Main where
import Control.Monad
import Control.Monad.Trans
import Data.Char
import Data.Map (Map)
import qualified Data.Map as Map
import Data.Set (Set)
import qualified Data.Set as Set
import System.Console.GetOpt
import System.Directory
import System.Environment
import System.Exit
import System.IO
import Text.XML.HaXml hiding (when)
import Config
import Darcs
import EmailPatch
import PatchData
import Version
data Opt = HelpOpt
| VersionOpt
| DarcsPathOpt String
| DarcsArgsOpt [String]
| SendmailOpt String
| EmailTemplateOpt String
| CharsetOpt String
| DryRunOpt
options :: [OptDescr Opt]
options =
[Option ['n'] ["dry-run"] (NoArg DryRunOpt)
"Do not actually do anything, but do mark it done"
,Option [] ["darcs-path"] (ReqArg DarcsPathOpt "FILE")
"Provide location of darcs"
,Option [] ["darcs-args"] (ReqArg (DarcsArgsOpt . splitArgs) "ARGS")
"Provide additional arguments to darcs\n\
\(separate arguments with commas)"
,Option [] ["use-sendmail"] (OptArg (\m -> SendmailOpt $
case m of
Nothing -> defaultSendmail
Just s -> s)
"FILE")
("Use sendmail (either " ++ defaultSendmail ++ " or FILE")
,Option [] ["email-template"] (ReqArg EmailTemplateOpt "FILE")
"Provide a template for emails"
,Option [] ["charset"] (ReqArg CharsetOpt "CHARSET")
"Specify character set"
,Option ['h'] ["help"] (NoArg HelpOpt) "Show usage"
,Option [] ["version"] (NoArg VersionOpt) "Show version"
]
findOpt :: [a] -> b -> (a -> Maybe b) -> b
findOpt [] b _ = b
findOpt (x:xs) b f = case f x of
Nothing -> findOpt xs b f
Just b' -> b'
splitArgs :: String -> [String]
splitArgs str = let (a,b) = span (/=',') str
in case b of ',':r -> a : splitArgs r
[] -> [a]
main :: IO ()
main = do args <- getArgs
let (oa, args', errs) = getOpt Permute options args
when (errs /= []) $ do mapM_ putStr errs
exitFailure
pn <- getProgName
forM_ oa $ \ opt ->
case opt of
HelpOpt -> do putStr (usageInfo (usage pn) options)
exitWith ExitSuccess
where usage pn = "Usage: " ++ pn ++
" [OPTIONS] email RECIPIENT [REPO ...]"
VersionOpt -> do putStrLn packageVersion
exitWith ExitSuccess
_ -> return ()
let dryRun = findOpt roa False $ \opt ->
case opt of DryRunOpt -> Just True
_ -> Nothing
roa = reverse oa
conf = Config { confDarcsPath = findOpt roa "darcs" $ \opt ->
case opt of
DarcsPathOpt s -> Just s
_ -> Nothing
, confDarcsArgs = findOpt roa [] $ \opt ->
case opt of
DarcsArgsOpt s -> Just s
_ -> Nothing
, confProgName = pn
, confSendmailPath = findOpt roa defaultSendmail $
\opt ->
case opt of
SendmailOpt s -> Just s
_ -> Nothing
, confEmailTemplate = findOpt roa Nothing $ \opt ->
case opt of
EmailTemplateOpt s ->
Just (Just s)
_ -> Nothing
, confCharset = findOpt roa Nothing $ \opt ->
case opt of
CharsetOpt s -> Just (Just s)
_ -> Nothing
}
flip runReaderT conf $ do
(cmd,args'') <- case args' of
["email"] -> err "email requires an argument"
("email":addr:rest) ->
return (("emailPatch " ++ addr,
emailPatch addr),
rest)
("print":rest) ->
return (("print",
\p -> liftIO $ print p >>
return True),
rest)
s:_ -> err ("unknown command " ++ s)
_ -> err "missing command"
repos <- case args'' of [] -> do wd <- liftIO $ getCurrentDirectory
return [wd]
_ -> return args''
mapM_ (processRepo dryRun cmd) repos
err msg = do pn <- asks confProgName
liftIO $ do hPutStrLn stderr (pn ++ ": " ++ msg)
exitFailure
type Command m = (String, PatchData -> m Bool)
dir = "_darcs/third-party/darcs-monitor/"
seenPatchesFileName = dir ++ "seen-patches"
type SeenPatches = Map String (Set String)
readSeenPatches :: MonadIO m => String -> m SeenPatches
readSeenPatches repo = do
liftIO $ catch (do fc <- readFile (repo ++ seenPatchesFileName)
return (read fc)
) $ \_ -> return Map.empty
processRepo :: (MonadConfig m, MonadIO m) => Bool -> Command m -> FilePath -> m ()
processRepo dryRun (tag,cmd) repo' = do
let repo = case last repo' of '/' -> repo'
_ -> repo' ++ "/"
liftIO $ createDirectoryIfMissing True (repo++dir)
seenPatches <- readSeenPatches repo
xml <- invokeDarcs ["changes", "--reverse", "--repo="++repo,"--xml-output"]
let Document _ _ (Elem "changelog" _ content) _ = xmlParse repo xml
let patches = filter (\c -> case c of CElem e -> True ; _ -> False) content
spl <- forM patches $ \ (CElem (Elem "patch" attrs content)) ->
do let author = getAttr "author" attrs
localDate = getAttr "local_date" attrs
hash = getAttr "hash" attrs
name = getElem "name" content
comment = getElem "comment" content
(authorName, authorEmail) = parseAuthor author
dt = PatchData { patchRepo = repo
, patchAuthor = authorName
, patchAuthorEmail = authorEmail
, patchDate = localDate
, patchHash = hash
, patchTitle = name
, patchComment = comment
, patchRepoDir = (repo++dir)
}
res <- let f set | dryRun = return (Set.insert tag set)
f set = do ok <- cmd dt
case ok of True -> return $
Set.insert tag set
False -> return set
in case Map.lookup hash seenPatches of
Just set -> case Set.member tag set of
True -> return set
False -> f set
Nothing -> f (Set.empty)
return (hash,res)
let seenPatches' :: SeenPatches
seenPatches' = Map.fromList spl
liftIO $ writeFile (repo ++ seenPatchesFileName) (show seenPatches')
parseAuthor str
| '<' `elem` str = let (name, '<':rest) = span (/= '<') str
(addr, _) = span (/= '>') rest
in (trim name, trim addr)
| '(' `elem` str = let (addr, '(':rest) = span (/= '(') str
(name, _) = span (/= ')') rest
in (trim name, trim addr)
| otherwise = ("", trim str)
ltrim str = dropWhile isSpace str
trim = reverse . ltrim . reverse . ltrim
getAttr name attrs = case lookup name attrs of
Nothing -> ""
Just (AttValue x) -> massage x ""
where massage (Left s : ss) = showString s .
massage ss
massage (Right ref : ss) = getRef ref .
massage ss
massage [] = id
getElem name (CElem (Elem name' _ content) : rest)
| name == name' = getContent content ""
getElem name (_ : rest) = getElem name rest
getContent (CElem (Elem _ _ content) : rest) = getContent content .
getContent rest
getContent (CString _ cdata : rest) = showString cdata .
getContent rest
getContent (CRef ref : rest) = getRef ref .
getContent rest
getContent (CMisc _ : rest) = getContent rest
getContent [] = id
getRef (RefEntity "lt") = showChar '<'
getRef (RefEntity "gt") = showChar '>'
getRef (RefEntity "amp") = showChar '&'
getRef (RefEntity "apos") = showChar '\''
getRef (RefEntity "quot") = showChar '"'
getRef (RefEntity s) = error ("unsupported entity reference &" ++ s ++ ";")
getRef (RefChar i) = showChar (toEnum i)
|