diff options
Diffstat (limited to 'Utility/Glob.hs')
| -rw-r--r-- | Utility/Glob.hs | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/Utility/Glob.hs b/Utility/Glob.hs index 119ea4834..c7d535933 100644 --- a/Utility/Glob.hs +++ b/Utility/Glob.hs @@ -1,3 +1,5 @@ +{-# LANGUAGE PackageImports #-} + {- file globbing - - Copyright 2014 Joey Hess <id@joeyh.name> @@ -14,10 +16,9 @@ module Utility.Glob ( import Utility.Exception -import System.Path.WildMatch - import "regex-tdfa" Text.Regex.TDFA import "regex-tdfa" Text.Regex.TDFA.String +import Data.Char newtype Glob = Glob Regex @@ -30,11 +31,31 @@ compileGlob glob globcase = Glob $ Right r -> r Left _ -> giveup $ "failed to compile regex: " ++ regex where - regex = '^':wildToRegex glob + regex = '^' : wildToRegex glob ++ "$" casesentitive = case globcase of CaseSensative -> True CaseInsensative -> False +wildToRegex :: String -> String +wildToRegex = concat . go + where + go [] = [] + go ('*':xs) = ".*" : go xs + go ('?':xs) = "." : go xs + go ('[':'!':xs) = "[^" : inpat xs + go ('[':xs) = "[" : inpat xs + go (x:xs) + | isDigit x || isAlpha x = [x] : go xs + | otherwise = esc x : go xs + + inpat [] = [] + inpat (x:xs) = case x of + ']' -> "]" : go xs + '\\' -> esc x : inpat xs + _ -> [x] : inpat xs + + esc c = ['\\', c] + matchGlob :: Glob -> String -> Bool matchGlob (Glob regex) val = case execute regex val of |