Darcs.Repository.Cache
- cacheHash :: ByteString -> String
- okayHash :: String -> Bool
- takeHash :: ByteString -> Maybe (String, ByteString)
- newtype Cache = Ca [CacheLoc]
- data CacheType
- data CacheLoc = Cache !CacheType !WritableOrNot !String
- data WritableOrNot
- = Writable
- | NotWritable
- data HashedDir
- hashedDir :: HashedDir -> String
- unionCaches :: Cache -> Cache -> Cache
- cleanCaches :: Cache -> HashedDir -> IO ()
- cleanCachesWithHint :: Cache -> HashedDir -> [String] -> IO ()
- fetchFileUsingCache :: Cache -> HashedDir -> String -> IO (String, ByteString)
- speculateFileUsingCache :: Cache -> HashedDir -> String -> IO ()
- writeFileUsingCache :: Cache -> Compression -> HashedDir -> ByteString -> IO String
- peekInCache :: Cache -> HashedDir -> String -> IO Bool
- repo2cache :: String -> Cache
- writable :: CacheLoc -> Bool
- isthisrepo :: CacheLoc -> Bool
- hashedFilePath :: CacheLoc -> HashedDir -> String -> String
- allHashedDirs :: [HashedDir]
Documentation
cacheHash :: ByteString -> StringSource
cacheHash computes the cache hash (i.e. filename) of a packed string.
takeHash :: ByteString -> Maybe (String, ByteString)Source
Constructors
| Cache !CacheType !WritableOrNot !String |
Constructors
| HashedPristineDir | |
| HashedPatchesDir | |
| HashedInventoriesDir |
unionCaches :: Cache -> Cache -> CacheSource
fetchFileUsingCache :: Cache -> HashedDir -> String -> IO (String, ByteString)Source
speculateFileUsingCache :: Cache -> HashedDir -> String -> IO ()Source
speculateFileUsingCache cache subdirectory name takes note that
the file name is likely to be useful soon: pipelined downloads
will add it to the (low-priority) queue, for the rest it is a noop.
writeFileUsingCache :: Cache -> Compression -> HashedDir -> ByteString -> IO StringSource
writeFileUsingCache cache compression subdir contents write the string contents to
the directory subdir, except if it is already in the cache, in which case it is a noop.
Warning (?) this means that in case of a hash collision, writing using writeFileUsingCache is
a noop. The returned value is the filename that was given to the string.
peekInCache :: Cache -> HashedDir -> String -> IO BoolSource
peekInCache cache subdir hash tells whether cache and
contains an object with hash hash in a writable position.
Florent: why do we want it to be in a writable position?
repo2cache :: String -> CacheSource
isthisrepo :: CacheLoc -> BoolSource