59 lines
1.2 KiB
Haskell
59 lines
1.2 KiB
Haskell
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{- file globbing
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-
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- This uses TDFA when available, with a fallback to regex-compat.
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- TDFA is less buggy in its support for non-unicode characters.
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-
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- Copyright 2014 Joey Hess <joey@kitenet.net>
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-
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- License: BSD-2-clause
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-}
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{-# LANGUAGE CPP #-}
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module Utility.Glob (
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Glob,
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GlobCase(..),
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compileGlob,
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matchGlob
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) where
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import System.Path.WildMatch
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#ifdef WITH_TDFA
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import Text.Regex.TDFA
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import Text.Regex.TDFA.String
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#else
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import Text.Regex
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import Data.Maybe
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#endif
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newtype Glob = Glob Regex
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data GlobCase = CaseSensative | CaseInsensative
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{- Compiles a glob to a regex, that can be repeatedly used. -}
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compileGlob :: String -> GlobCase -> Glob
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compileGlob glob globcase = Glob $
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#ifdef WITH_TDFA
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case compile (defaultCompOpt {caseSensitive = casesentitive}) defaultExecOpt regex of
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Right r -> r
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Left _ -> error $ "failed to compile regex: " ++ regex
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#else
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mkRegexWithOpts regex casesentitive True
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#endif
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where
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regex = '^':wildToRegex glob
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casesentitive = case globcase of
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CaseSensative -> True
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CaseInsensative -> False
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matchGlob :: Glob -> String -> Bool
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matchGlob (Glob regex) val =
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#ifdef WITH_TDFA
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case execute regex val of
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Right (Just _) -> True
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_ -> False
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#else
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isJust $ matchRegex regex val
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#endif
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