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authorGravatar Joey Hess <id@joeyh.name>2013-05-14 14:21:49 -0500
committerGravatar Joey Hess <id@joeyh.name>2013-05-14 14:21:49 -0500
commita3fc31f1455d951a848985bc948f83bdeb314cc1 (patch)
tree185d6d505a5eda068bdb50567fab77a2b3058c4a /Annex
parent4eda8ef3e73ec1f0b385698de826a463f124f0a0 (diff)
parentc2f6f82a146339bb4b94acff1aae4f12ad023a08 (diff)
Merge remote-tracking branch 'gnu/windows' into windows
Diffstat (limited to 'Annex')
-rw-r--r--Annex/Link.hs28
1 files changed, 15 insertions, 13 deletions
diff --git a/Annex/Link.hs b/Annex/Link.hs
index 24ec6c7c9..1b4aacfac 100644
--- a/Annex/Link.hs
+++ b/Annex/Link.hs
@@ -28,25 +28,27 @@ isAnnexLink file = maybe Nothing (fileKey . takeFileName) <$> getAnnexLinkTarget
{- Gets the link target of a symlink.
-
- - On a filesystem that does not support symlinks, get the link
- - target by looking inside the file. (Only return at first 8k of the file,
- - more than enough for any symlink target.)
+ - On a filesystem that does not support symlinks, fall back to getting the
+ - link target by looking inside the file. (Only return at first 8k of the
+ - file, more than enough for any symlink target.)
-
- Returns Nothing if the file is not a symlink, or not a link to annex
- content.
-}
getAnnexLinkTarget :: FilePath -> Annex (Maybe LinkTarget)
-getAnnexLinkTarget file = do
- v <- ifM (coreSymlinks <$> Annex.getGitConfig)
- ( liftIO $ catchMaybeIO $ readSymbolicLink file
- , liftIO $ catchMaybeIO $ readfilestart file
- )
- case v of
- Nothing -> return Nothing
- Just l
- | isLinkToAnnex l -> return v
- | otherwise -> return Nothing
+getAnnexLinkTarget file =
+ check readSymbolicLink $
+ check readfilestart $
+ return Nothing
where
+ check getlinktarget fallback = do
+ v <- liftIO $ catchMaybeIO $ getlinktarget file
+ case v of
+ Just l
+ | isLinkToAnnex l -> return v
+ | otherwise -> return Nothing
+ Nothing -> fallback
+
readfilestart f = do
h <- openFile f ReadMode
fileEncoding h