46 lines
1.4 KiB
Haskell
46 lines
1.4 KiB
Haskell
{- git-annex file copying with rsync
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-
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- Copyright 2010 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 RsyncFile where
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import System.Posix.Process
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import Data.String.Utils
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import Utility
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{- Generates parameters to make rsync use a specified command as its remote
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- shell. -}
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rsyncShell :: [String] -> [String]
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rsyncShell command = ["-e", unwords $ map escape command]
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where
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{- rsync requires some weird, non-shell like quoting in
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- here. A doubled single quote inside the single quoted
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- string is a single quote. -}
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escape s = "'" ++ (join "''" $ split "'" s) ++ "'"
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{- Runs rsync in server mode to send a file, and exits. -}
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rsyncServerSend :: FilePath -> IO ()
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rsyncServerSend file = rsyncExec $
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rsyncServerParams ++ ["--sender", utilityEscape file]
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{- Runs rsync in server mode to receive a file. -}
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rsyncServerReceive :: FilePath -> IO Bool
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rsyncServerReceive file = rsync $ rsyncServerParams ++ [utilityEscape file]
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rsyncServerParams :: [String]
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rsyncServerParams =
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[ "--server"
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, "-p" -- preserve permissions
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, "--inplace" -- allow resuming of transfers of big files
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, "-e.Lsf", "." -- other options rsync normally uses in server mode
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]
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rsync :: [String] -> IO Bool
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rsync params = boolSystem "rsync" params
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rsyncExec :: [String] -> IO ()
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rsyncExec params = executeFile "rsync" True params Nothing
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