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-rw-r--r--Annex/CatFile.hs3
-rw-r--r--Annex/MetaData.hs30
-rw-r--r--Command/Add.hs4
-rw-r--r--Logs/MetaData.hs19
-rw-r--r--debian/changelog1
5 files changed, 42 insertions, 15 deletions
diff --git a/Annex/CatFile.hs b/Annex/CatFile.hs
index 54a4d1099..87d179a62 100644
--- a/Annex/CatFile.hs
+++ b/Annex/CatFile.hs
@@ -87,8 +87,7 @@ catKey' modeguaranteed ref mode
| modeguaranteed = catObject ref
| otherwise = L.take 8192 <$> catObject ref
-{- Looks up the file mode corresponding to the Ref using the running
- - cat-file.
+{- Looks up the key corresponding to the Ref using the running cat-file.
-
- Currently this always has to look in HEAD, because cat-file --batch
- does not offer a way to specify that we want to look up a tree object
diff --git a/Annex/MetaData.hs b/Annex/MetaData.hs
index ef235b51f..b7850a868 100644
--- a/Annex/MetaData.hs
+++ b/Annex/MetaData.hs
@@ -11,6 +11,7 @@ import Common.Annex
import qualified Annex
import Types.MetaData
import Logs.MetaData
+import Annex.CatFile
import qualified Data.Set as S
import qualified Data.Map as M
@@ -27,18 +28,27 @@ yearMetaField = MetaField "year"
monthMetaField :: MetaField
monthMetaField = MetaField "month"
-{- Generates metadata for a file that has just been ingested into the
- - annex. Passed the FileStatus of the content file.
+{- Adds metadata for a file that has just been ingested into the
+ - annex, but has not yet been committed to git.
-
- - Does not overwrite any existing metadata values for the key.
+ - When the file has been modified, the metadata is copied over
+ - from the old key to the new key. Note that it looks at the old key as
+ - committed to HEAD -- the new key may or may not have already been staged
+ - in th annex.
+ -
+ - Also, can generate new metadata, if configured to do so.
-}
-genMetaData :: Key -> FileStatus -> Annex ()
-genMetaData key status = whenM (annexGenMetaData <$> Annex.getGitConfig) $ do
- metadata <- getCurrentMetaData key
- let metadata' = genMetaData' status metadata
- unless (metadata' == emptyMetaData) $
- addMetaData key metadata'
-
+genMetaData :: Key -> FilePath -> FileStatus -> Annex ()
+genMetaData key file status = do
+ maybe noop (flip copyMetaData key) =<< catKeyFileHEAD file
+ whenM (annexGenMetaData <$> Annex.getGitConfig) $ do
+ metadata <- getCurrentMetaData key
+ let metadata' = genMetaData' status metadata
+ unless (metadata' == emptyMetaData) $
+ addMetaData key metadata'
+
+{- Generates metadata from the FileStatus.
+ - Does not overwrite any existing metadata values. -}
genMetaData' :: FileStatus -> MetaData -> MetaData
genMetaData' status old = MetaData $ M.fromList $ filter isnew
[ (yearMetaField, S.singleton $ toMetaValue $ show y)
diff --git a/Command/Add.hs b/Command/Add.hs
index 0906ae531..662ce4242 100644
--- a/Command/Add.hs
+++ b/Command/Add.hs
@@ -161,14 +161,14 @@ ingest (Just source) = do
goindirect (Just (key, _)) mcache ms = do
catchAnnex (moveAnnex key $ contentLocation source)
(undo (keyFilename source) key)
- maybe noop (genMetaData key) ms
+ maybe noop (genMetaData key (keyFilename source)) ms
liftIO $ nukeFile $ keyFilename source
return $ (Just key, mcache)
goindirect _ _ _ = failure "failed to generate a key"
godirect (Just (key, _)) (Just cache) ms = do
addInodeCache key cache
- maybe noop (genMetaData key) ms
+ maybe noop (genMetaData key (keyFilename source)) ms
finishIngestDirect key source
return $ (Just key, Just cache)
godirect _ _ _ = failure "failed to generate a key"
diff --git a/Logs/MetaData.hs b/Logs/MetaData.hs
index 63314bcef..6702c3733 100644
--- a/Logs/MetaData.hs
+++ b/Logs/MetaData.hs
@@ -28,10 +28,10 @@
module Logs.MetaData (
getCurrentMetaData,
- getMetaData,
addMetaData,
addMetaData',
currentMetaData,
+ copyMetaData,
) where
import Common.Annex
@@ -135,3 +135,20 @@ simplifyLog s = case sl of
where
older = value l
unique = older `differenceMetaData` newer
+
+{- Copies the metadata from the old key to the new key.
+ -
+ - The exact content of the metadata file is copied, so that the timestamps
+ - remain the same, and because this is more space-efficient in the git
+ - repository.
+ -
+ - Any metadata already attached to the new key is not preserved.
+ -}
+copyMetaData :: Key -> Key -> Annex ()
+copyMetaData oldkey newkey
+ | oldkey == newkey = noop
+ | otherwise = do
+ l <- getMetaData oldkey
+ unless (S.null l) $
+ Annex.Branch.change (metaDataLogFile newkey) $
+ const $ showLog l
diff --git a/debian/changelog b/debian/changelog
index 543504c12..8c157aeb2 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -11,6 +11,7 @@ git-annex (5.20140222) UNRELEASED; urgency=medium
tag/showname.
* annex.genmetadata can be set to make git-annex automatically set
metadata (year and month) when adding files.
+ * Preserve metadata when staging a new version of an annexed file.
* metadata: Field names limited to alphanumerics and a few whitelisted
punctuation characters to avoid issues with views, etc.
* metadata: Support --json