diff options
Diffstat (limited to 'Annex/Locations.hs')
| -rw-r--r-- | Annex/Locations.hs | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/Annex/Locations.hs b/Annex/Locations.hs index 058993cd2..a6af4d417 100644 --- a/Annex/Locations.hs +++ b/Annex/Locations.hs @@ -452,15 +452,25 @@ preSanitizeKeyName = concatMap escape - can cause existing objects to get lost. -} keyFile :: Key -> FilePath -keyFile key = replace "/" "%" $ replace ":" "&c" $ - replace "%" "&s" $ replace "&" "&a" $ key2file key +keyFile = concatMap esc . key2file + where + esc '&' = "&a" + esc '%' = "&s" + esc ':' = "&c" + esc '/' = "%" + esc c = [c] {- Reverses keyFile, converting a filename fragment (ie, the basename of - the symlink target) into a key. -} fileKey :: FilePath -> Maybe Key -fileKey file = file2key $ - replace "&a" "&" $ replace "&s" "%" $ - replace "&c" ":" $ replace "%" "/" file +fileKey = file2key . unesc [] + where + unesc r [] = reverse r + unesc r ('%':cs) = unesc ('/':r) cs + unesc r ('&':'c':cs) = unesc (':':r) cs + unesc r ('&':'s':cs) = unesc ('%':r) cs + unesc r ('&':'a':cs) = unesc ('&':r) cs + unesc r (c:cs) = unesc (c:r) cs {- for quickcheck -} prop_isomorphic_fileKey :: String -> Bool |