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definition:
|
isValid :: FilePath -> Bool
isValid [] = False
isValid path@(_:_)
| isPosix = True
| otherwise = not (any (`elem` badCharacters) x2)
&& not (any f $ splitDirectories x2)
&& not (length path >= 2 && all isPathSeparator path)
where
x2 = dropDrive path
f x = map toUpper (dropExtensions x) `elem` badElements
|
|
demand:
|
argument 1
|
|
deterministic:
|
deterministic operation
|
|
documentation:
|
-- | Is a FilePath valid, i.e. could you create a file like it?
--
-- > isValid "" == False
-- > Posix: isValid "/random_ path:*" == True
-- > Posix: isValid x == not (null x)
-- > Windows: isValid "c:\\test" == True
-- > Windows: isValid "c:\\test:of_test" == False
-- > Windows: isValid "test*" == False
-- > Windows: isValid "c:\\test\\nul" == False
-- > Windows: isValid "c:\\test\\prn.txt" == False
-- > Windows: isValid "c:\\nul\\file" == False
-- > Windows: isValid "\\\\" == False
|
|
failfree:
|
<FAILING>
|
|
indeterministic:
|
referentially transparent operation
|
|
infix:
|
no fixity defined
|
|
iotype:
|
{({[]}) |-> {False} || ({:}) |-> _}
|
|
name:
|
isValid
|
|
precedence:
|
no precedence defined
|
|
result-values:
|
_
|
|
signature:
|
String -> Prelude.Bool
|
|
solution-complete:
|
operation might suspend on free variables
|
|
terminating:
|
possibly non-terminating
|
|
totally-defined:
|
possibly non-reducible on same data term
|