85 lines
2.4 KiB
Haskell
85 lines
2.4 KiB
Haskell
{- git-annex command
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-
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- Copyright 2011 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Command.AddUrl where
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import Network.URI
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import Common.Annex
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import Command
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import qualified Backend
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import qualified Command.Add
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import qualified Annex
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import qualified Backend.URL
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import qualified Utility.Url as Url
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import Annex.Content
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import Logs.Web
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import qualified Option
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def :: [Command]
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def = [withOptions [fileOption] $
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command "addurl" (paramRepeating paramUrl) seek "add urls to annex"]
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fileOption :: Option
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fileOption = Option.field [] "file" paramFile "specify what file the url is added to"
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seek :: [CommandSeek]
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seek = [withField fileOption return $ \f ->
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withStrings $ start f]
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start :: Maybe FilePath -> String -> CommandStart
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start optfile s = notBareRepo $ go $ fromMaybe bad $ parseURI s
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where
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bad = fromMaybe (error $ "bad url " ++ s) $
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parseURI $ escapeURIString isUnescapedInURI s
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go url = do
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let file = fromMaybe (url2file url) optfile
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showStart "addurl" file
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next $ perform s file
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perform :: String -> FilePath -> CommandPerform
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perform url file = ifAnnexed file addurl geturl
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where
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geturl = do
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whenM (liftIO $ doesFileExist file) $
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error $ "not overwriting existing " ++ file
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fast <- Annex.getState Annex.fast
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if fast then nodownload url file else download url file
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addurl (key, _backend) = do
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setUrlPresent key url
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next $ return True
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download :: String -> FilePath -> CommandPerform
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download url file = do
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showAction $ "downloading " ++ url ++ " "
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let dummykey = Backend.URL.fromUrl url Nothing
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tmp <- fromRepo $ gitAnnexTmpLocation dummykey
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liftIO $ createDirectoryIfMissing True (parentDir tmp)
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stopUnless (downloadUrl [url] tmp) $ do
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[(backend, _)] <- Backend.chooseBackends [file]
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k <- Backend.genKey tmp backend
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case k of
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Nothing -> stop
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Just (key, _) -> do
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moveAnnex key tmp
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setUrlPresent key url
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next $ Command.Add.cleanup file key True
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nodownload :: String -> FilePath -> CommandPerform
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nodownload url file = do
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(exists, size) <- liftIO $ Url.exists url
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unless exists $
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error $ "unable to access url: " ++ url
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let key = Backend.URL.fromUrl url size
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setUrlPresent key url
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next $ Command.Add.cleanup file key False
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url2file :: URI -> FilePath
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url2file url = escape $ uriRegName auth ++ uriPath url ++ uriQuery url
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where
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escape = replace "/" "_" . replace "?" "_"
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auth = fromMaybe (error $ "bad url " ++ show url) $ uriAuthority url
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