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authorGravatar Joey Hess <joey@kitenet.net>2012-02-16 02:05:06 -0400
committerGravatar Joey Hess <joey@kitenet.net>2012-02-16 02:05:06 -0400
commit8f9b501515d215ac2befab51773b63bf0f180d5d (patch)
tree6c70ecc7b25ca65a5d55c4840564d653f74cbe8d /Backend/URL.hs
parenta1e52f0ce5984058c737ed709fc5d4b6398e019a (diff)
handle really long urls
Using the whole url as a key can make the filename too long. Truncate and use a md5sum for uniqueness if necessary.
Diffstat (limited to 'Backend/URL.hs')
-rw-r--r--Backend/URL.hs11
1 files changed, 10 insertions, 1 deletions
diff --git a/Backend/URL.hs b/Backend/URL.hs
index b3411bac5..b98974cb4 100644
--- a/Backend/URL.hs
+++ b/Backend/URL.hs
@@ -10,6 +10,8 @@ module Backend.URL (
fromUrl
) where
+import Data.Hash.MD5
+
import Common.Annex
import Types.Backend
import Types.Key
@@ -26,7 +28,14 @@ backend = Backend {
fromUrl :: String -> Maybe Integer -> Key
fromUrl url size = stubKey
- { keyName = url
+ { keyName = key
, keyBackendName = "URL"
, keySize = size
}
+ where
+ -- when it's not too long, use the url as the key name
+ -- 256 is the absolute filename max, but use a shorter
+ -- length because this is not the entire key filename.
+ key
+ | length url < 128 = url
+ | otherwise = take 128 url ++ "-" ++ md5s (Str url)