55 lines
1.2 KiB
Haskell
55 lines
1.2 KiB
Haskell
{- Chunk logs, pure operations.
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-
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- Copyright 2014 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Logs.Chunk.Pure
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( ChunkMethod(..)
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, ChunkSize
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, ChunkCount
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, ChunkLog
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, parseLog
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, showLog
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) where
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import Annex.Common
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import Logs.MapLog
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import Data.Int
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-- Currently chunks are all fixed size, but other chunking methods
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-- may be added.
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data ChunkMethod = FixedSizeChunks ChunkSize | UnknownChunks String
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deriving (Ord, Eq, Show)
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type ChunkSize = Int64
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-- 0 when chunks are no longer present
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type ChunkCount = Integer
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type ChunkLog = MapLog (UUID, ChunkMethod) ChunkCount
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parseChunkMethod :: String -> ChunkMethod
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parseChunkMethod s = maybe (UnknownChunks s) FixedSizeChunks (readish s)
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showChunkMethod :: ChunkMethod -> String
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showChunkMethod (FixedSizeChunks sz) = show sz
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showChunkMethod (UnknownChunks s) = s
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parseLog :: String -> ChunkLog
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parseLog = parseMapLog fieldparser valueparser
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where
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fieldparser s =
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let (u,m) = separate (== sep) s
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in Just (toUUID u, parseChunkMethod m)
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valueparser = readish
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showLog :: ChunkLog -> String
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showLog = showMapLog fieldshower valueshower
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where
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fieldshower (u, m) = fromUUID u ++ sep : showChunkMethod m
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valueshower = show
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sep :: Char
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sep = ':'
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