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avoid parseDuration succeeding on empty string

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Joey Hess 2020-12-08 12:51:56 -04:00
parent b9cfd15e90
commit 794fc72afb
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1 changed files with 3 additions and 1 deletions
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4
Utility/HumanTime.hs
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@ -45,7 +45,9 @@ daysToDuration i = Duration $ i * dsecs
{- Parses a human-input time duration, of the form "5h", "1m", "5h1m", etc -}
parseDuration :: String -> Either String Duration
parseDuration d = maybe parsefail (Right . Duration) $ go 0 d
parseDuration d
| null d = parsefail
| otherwise = maybe parsefail (Right . Duration) $ go 0 d
where
go n [] = return n
go n s = do