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Diffstat (limited to 'Git/Filename.hs')
| -rw-r--r-- | Git/Filename.hs | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/Git/Filename.hs b/Git/Filename.hs deleted file mode 100644 index 010e5ba..0000000 --- a/Git/Filename.hs +++ /dev/null @@ -1,55 +0,0 @@ -{- Some git commands output encoded filenames, in a rather annoyingly complex - - C-style encoding. - - - - Copyright 2010, 2011 Joey Hess <id@joeyh.name> - - - - Licensed under the GNU AGPL version 3 or higher. - -} - -module Git.Filename where - -import Common -import Utility.Format (decode_c, encode_c) - -import Data.Char -import Data.Word -import qualified Data.ByteString as S - --- encoded filenames will be inside double quotes -decode :: S.ByteString -> RawFilePath -decode b = case S.uncons b of - Nothing -> b - Just (h, t) - | h /= q -> b - | otherwise -> case S.unsnoc t of - Nothing -> b - Just (i, l) - | l /= q -> b - | otherwise -> - encodeBS $ decode_c $ decodeBS i - where - q :: Word8 - q = fromIntegral (ord '"') - -{- Should not need to use this, except for testing decode. -} -encode :: RawFilePath -> S.ByteString -encode s = encodeBS $ "\"" ++ encode_c (decodeBS s) ++ "\"" - -prop_encode_decode_roundtrip :: FilePath -> Bool -prop_encode_decode_roundtrip s = s' == - fromRawFilePath (decode (encode (toRawFilePath s'))) - where - s' = nonul (nohigh s) - -- Encoding and then decoding roundtrips only when - -- the string does not contain high unicode, because eg, - -- both "\12345" and "\227\128\185" are encoded to - -- "\343\200\271". - -- - -- This property papers over the problem, by only - -- testing ascii - nohigh = filter isAscii - -- A String can contain a NUL, but toRawFilePath - -- truncates on the NUL, which is generally fine - -- because unix filenames cannot contain NUL. - -- So the encoding only roundtrips when there is no nul. - nonul = filter (/= '\NUL') |