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https://github.com/idris-lang/Idris2.git
synced 2024-12-24 20:23:11 +03:00
46 lines
1.5 KiB
Idris
46 lines
1.5 KiB
Idris
module Debug.Buffer
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import Data.Buffer
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import Data.List
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import Data.String
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toHex : Int -> Int -> String
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toHex d n = pack $ reverse $ foldl toHexDigit [] (slice d n [])
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where
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toHexDigit : List Char -> Int -> List Char
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toHexDigit acc i = chr (if i < 10 then i + ord '0' else (i-10) + ord 'A')::acc
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slice : Int -> Int -> List Int -> List Int
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slice 0 _ acc = acc
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slice d n acc = slice (d-1) (n `div` 16) ((n `mod` 16)::acc)
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showSep : String -> Nat -> List String -> String
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showSep sep _ [] = ""
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showSep sep n [x] = x ++ replicate (3*n) ' '
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showSep sep Z (x :: xs) = x ++ sep ++ showSep sep Z xs
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showSep sep (S n) (x :: xs) = x ++ sep ++ showSep sep n xs
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renderRow : List Bits8 -> String
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renderRow dat = showSep " " 16 (map (toHex 2 . cast) dat) ++
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" " ++ pack (map (\i => if i > 0x1f && i < 0x80 then chr (cast i) else '.') dat)
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group : Nat -> List a -> List (List a)
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group n xs = worker [] xs
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where
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worker : List (List a) -> List a -> List (List a)
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worker acc [] = reverse acc
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worker acc ys = worker ((take n ys)::acc) (drop n ys)
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export
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dumpBuffer : HasIO io => Buffer -> io String
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dumpBuffer buf = do
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size <- liftIO $ rawSize buf
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dat <- liftIO $ bufferData' buf
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let rows = group 16 dat
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let hex = showSep "\n" 0 (map renderRow rows)
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pure $ hex ++ "\n\ntotal size = " ++ show size
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export
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printBuffer : HasIO io => Buffer -> io ()
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printBuffer buf = putStrLn $ !(dumpBuffer buf)
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