Safe Haskell | Safe-Inferred |
---|---|
Language | Haskell2010 |
RIO.FilePath
Synopsis
- type FilePath = String
- makeRelative :: FilePath -> FilePath -> FilePath
- (</>) :: FilePath -> FilePath -> FilePath
- dropTrailingPathSeparator :: FilePath -> FilePath
- normalise :: FilePath -> FilePath
- takeFileName :: FilePath -> FilePath
- takeExtensions :: FilePath -> String
- takeExtension :: FilePath -> String
- takeDrive :: FilePath -> FilePath
- takeDirectory :: FilePath -> FilePath
- takeBaseName :: FilePath -> String
- stripExtension :: String -> FilePath -> Maybe FilePath
- splitSearchPath :: String -> [FilePath]
- splitPath :: FilePath -> [FilePath]
- splitFileName :: FilePath -> (String, String)
- splitExtensions :: FilePath -> (FilePath, String)
- splitExtension :: FilePath -> (String, String)
- splitDrive :: FilePath -> (FilePath, FilePath)
- splitDirectories :: FilePath -> [FilePath]
- searchPathSeparator :: Char
- replaceFileName :: FilePath -> String -> FilePath
- replaceExtensions :: FilePath -> String -> FilePath
- replaceExtension :: FilePath -> String -> FilePath
- replaceDirectory :: FilePath -> String -> FilePath
- replaceBaseName :: FilePath -> String -> FilePath
- pathSeparators :: [Char]
- pathSeparator :: Char
- makeValid :: FilePath -> FilePath
- joinPath :: [FilePath] -> FilePath
- joinDrive :: FilePath -> FilePath -> FilePath
- isValid :: FilePath -> Bool
- isSearchPathSeparator :: Char -> Bool
- isRelative :: FilePath -> Bool
- isPathSeparator :: Char -> Bool
- isExtensionOf :: String -> FilePath -> Bool
- isExtSeparator :: Char -> Bool
- isDrive :: FilePath -> Bool
- isAbsolute :: FilePath -> Bool
- hasTrailingPathSeparator :: FilePath -> Bool
- hasExtension :: FilePath -> Bool
- hasDrive :: FilePath -> Bool
- extSeparator :: Char
- equalFilePath :: FilePath -> FilePath -> Bool
- dropFileName :: FilePath -> FilePath
- dropExtensions :: FilePath -> FilePath
- dropExtension :: FilePath -> FilePath
- dropDrive :: FilePath -> FilePath
- combine :: FilePath -> FilePath -> FilePath
- addTrailingPathSeparator :: FilePath -> FilePath
- addExtension :: FilePath -> String -> FilePath
- (<.>) :: FilePath -> String -> FilePath
- (-<.>) :: FilePath -> String -> FilePath
- getSearchPath :: MonadIO m => m [FilePath]
Documentation
type FilePath = String Source #
File and directory names are values of type String
, whose precise
meaning is operating system dependent. Files can be opened, yielding a
handle which can then be used to operate on the contents of that file.
makeRelative :: FilePath -> FilePath -> FilePath Source #
Contract a filename, based on a relative path. Note that the resulting path
will never introduce ..
paths, as the presence of symlinks means ../b
may not reach a/b
if it starts from a/c
. For a worked example see
this blog post.
The corresponding makeAbsolute
function can be found in
System.Directory
.
makeRelative "/directory" "/directory/file.ext" == "file.ext" Valid x => makeRelative (takeDirectory x) x `equalFilePath` takeFileName x makeRelative x x == "." Valid x y => equalFilePath x y || (isRelative x && makeRelative y x == x) || equalFilePath (y </> makeRelative y x) x Windows: makeRelative "C:\\Home" "c:\\home\\bob" == "bob" Windows: makeRelative "C:\\Home" "c:/home/bob" == "bob" Windows: makeRelative "C:\\Home" "D:\\Home\\Bob" == "D:\\Home\\Bob" Windows: makeRelative "C:\\Home" "C:Home\\Bob" == "C:Home\\Bob" Windows: makeRelative "/Home" "/home/bob" == "bob" Windows: makeRelative "/" "//" == "//" Posix: makeRelative "/Home" "/home/bob" == "/home/bob" Posix: makeRelative "/home/" "/home/bob/foo/bar" == "bob/foo/bar" Posix: makeRelative "/fred" "bob" == "bob" Posix: makeRelative "/file/test" "/file/test/fred" == "fred" Posix: makeRelative "/file/test" "/file/test/fred/" == "fred/" Posix: makeRelative "some/path" "some/path/a/b/c" == "a/b/c"
(</>) :: FilePath -> FilePath -> FilePath infixr 5 Source #
Combine two paths with a path separator.
If the second path starts with a path separator or a drive letter, then it returns the second.
The intention is that readFile (dir
will access the same file as
</>
file)setCurrentDirectory dir; readFile file
.
Posix: "/directory" </> "file.ext" == "/directory/file.ext" Windows: "/directory" </> "file.ext" == "/directory\\file.ext" "directory" </> "/file.ext" == "/file.ext" Valid x => (takeDirectory x </> takeFileName x) `equalFilePath` x
Combined:
Posix: "/" </> "test" == "/test" Posix: "home" </> "bob" == "home/bob" Posix: "x:" </> "foo" == "x:/foo" Windows: "C:\\foo" </> "bar" == "C:\\foo\\bar" Windows: "home" </> "bob" == "home\\bob"
Not combined:
Posix: "home" </> "/bob" == "/bob" Windows: "home" </> "C:\\bob" == "C:\\bob"
Not combined (tricky):
On Windows, if a filepath starts with a single slash, it is relative to the
root of the current drive. In [1], this is (confusingly) referred to as an
absolute path.
The current behavior of </>
is to never combine these forms.
Windows: "home" </> "/bob" == "/bob" Windows: "home" </> "\\bob" == "\\bob" Windows: "C:\\home" </> "\\bob" == "\\bob"
On Windows, from [1]: "If a file name begins with only a disk designator
but not the backslash after the colon, it is interpreted as a relative path
to the current directory on the drive with the specified letter."
The current behavior of </>
is to never combine these forms.
Windows: "D:\\foo" </> "C:bar" == "C:bar" Windows: "C:\\foo" </> "C:bar" == "C:bar"
dropTrailingPathSeparator :: FilePath -> FilePath Source #
Remove any trailing path separators
dropTrailingPathSeparator "file/test/" == "file/test" dropTrailingPathSeparator "/" == "/" Windows: dropTrailingPathSeparator "\\" == "\\" Posix: not (hasTrailingPathSeparator (dropTrailingPathSeparator x)) || isDrive x
normalise :: FilePath -> FilePath Source #
Normalise a file
- // outside of the drive can be made blank
- / ->
pathSeparator
- ./ -> ""
Posix: normalise "/file/\\test////" == "/file/\\test/" Posix: normalise "/file/./test" == "/file/test" Posix: normalise "/test/file/../bob/fred/" == "/test/file/../bob/fred/" Posix: normalise "../bob/fred/" == "../bob/fred/" Posix: normalise "./bob/fred/" == "bob/fred/" Windows: normalise "c:\\file/bob\\" == "C:\\file\\bob\\" Windows: normalise "c:\\" == "C:\\" Windows: normalise "C:.\\" == "C:" Windows: normalise "\\\\server\\test" == "\\\\server\\test" Windows: normalise "//server/test" == "\\\\server\\test" Windows: normalise "c:/file" == "C:\\file" Windows: normalise "/file" == "\\file" Windows: normalise "\\" == "\\" Windows: normalise "/./" == "\\" normalise "." == "." Posix: normalise "./" == "./" Posix: normalise "./." == "./" Posix: normalise "/./" == "/" Posix: normalise "/" == "/" Posix: normalise "bob/fred/." == "bob/fred/" Posix: normalise "//home" == "/home"
takeFileName :: FilePath -> FilePath Source #
Get the file name.
takeFileName "/directory/file.ext" == "file.ext" takeFileName "test/" == "" takeFileName x `isSuffixOf` x takeFileName x == snd (splitFileName x) Valid x => takeFileName (replaceFileName x "fred") == "fred" Valid x => takeFileName (x </> "fred") == "fred" Valid x => isRelative (takeFileName x)
takeExtensions :: FilePath -> String Source #
Get all extensions.
takeExtensions "/directory/path.ext" == ".ext" takeExtensions "file.tar.gz" == ".tar.gz"
takeExtension :: FilePath -> String Source #
Get the extension of a file, returns ""
for no extension, .ext
otherwise.
takeExtension "/directory/path.ext" == ".ext" takeExtension x == snd (splitExtension x) Valid x => takeExtension (addExtension x "ext") == ".ext" Valid x => takeExtension (replaceExtension x "ext") == ".ext"
takeDrive :: FilePath -> FilePath Source #
Get the drive from a filepath.
takeDrive x == fst (splitDrive x)
takeDirectory :: FilePath -> FilePath Source #
Get the directory name, move up one level.
takeDirectory "/directory/other.ext" == "/directory" takeDirectory x `isPrefixOf` x || takeDirectory x == "." takeDirectory "foo" == "." takeDirectory "/" == "/" takeDirectory "/foo" == "/" takeDirectory "/foo/bar/baz" == "/foo/bar" takeDirectory "/foo/bar/baz/" == "/foo/bar/baz" takeDirectory "foo/bar/baz" == "foo/bar" Windows: takeDirectory "foo\\bar" == "foo" Windows: takeDirectory "foo\\bar\\\\" == "foo\\bar" Windows: takeDirectory "C:\\" == "C:\\"
takeBaseName :: FilePath -> String Source #
Get the base name, without an extension or path.
takeBaseName "/directory/file.ext" == "file" takeBaseName "file/test.txt" == "test" takeBaseName "dave.ext" == "dave" takeBaseName "" == "" takeBaseName "test" == "test" takeBaseName (addTrailingPathSeparator x) == "" takeBaseName "file/file.tar.gz" == "file.tar"
stripExtension :: String -> FilePath -> Maybe FilePath Source #
Drop the given extension from a FilePath, and the "."
preceding it.
Returns Nothing
if the FilePath does not have the given extension, or
Just
and the part before the extension if it does.
This function can be more predictable than dropExtensions
, especially if the filename
might itself contain .
characters.
stripExtension "hs.o" "foo.x.hs.o" == Just "foo.x" stripExtension "hi.o" "foo.x.hs.o" == Nothing dropExtension x == fromJust (stripExtension (takeExtension x) x) dropExtensions x == fromJust (stripExtension (takeExtensions x) x) stripExtension ".c.d" "a.b.c.d" == Just "a.b" stripExtension ".c.d" "a.b..c.d" == Just "a.b." stripExtension "baz" "foo.bar" == Nothing stripExtension "bar" "foobar" == Nothing stripExtension "" x == Just x
splitSearchPath :: String -> [FilePath] Source #
Take a string, split it on the searchPathSeparator
character.
Blank items are ignored on Windows, and converted to .
on Posix.
On Windows path elements are stripped of quotes.
Follows the recommendations in http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap08.html
Posix: splitSearchPath "File1:File2:File3" == ["File1","File2","File3"] Posix: splitSearchPath "File1::File2:File3" == ["File1",".","File2","File3"] Windows: splitSearchPath "File1;File2;File3" == ["File1","File2","File3"] Windows: splitSearchPath "File1;;File2;File3" == ["File1","File2","File3"] Windows: splitSearchPath "File1;\"File2\";File3" == ["File1","File2","File3"]
splitPath :: FilePath -> [FilePath] Source #
Split a path by the directory separator.
splitPath "/directory/file.ext" == ["/","directory/","file.ext"] concat (splitPath x) == x splitPath "test//item/" == ["test//","item/"] splitPath "test/item/file" == ["test/","item/","file"] splitPath "" == [] Windows: splitPath "c:\\test\\path" == ["c:\\","test\\","path"] Posix: splitPath "/file/test" == ["/","file/","test"]
splitFileName :: FilePath -> (String, String) Source #
Split a filename into directory and file. </>
is the inverse.
The first component will often end with a trailing slash.
splitFileName "/directory/file.ext" == ("/directory/","file.ext") Valid x => uncurry (</>) (splitFileName x) == x || fst (splitFileName x) == "./" Valid x => isValid (fst (splitFileName x)) splitFileName "file/bob.txt" == ("file/", "bob.txt") splitFileName "file/" == ("file/", "") splitFileName "bob" == ("./", "bob") Posix: splitFileName "/" == ("/","") Windows: splitFileName "c:" == ("c:","")
splitExtensions :: FilePath -> (FilePath, String) Source #
Split on all extensions.
splitExtensions "/directory/path.ext" == ("/directory/path",".ext") splitExtensions "file.tar.gz" == ("file",".tar.gz") uncurry (++) (splitExtensions x) == x Valid x => uncurry addExtension (splitExtensions x) == x splitExtensions "file.tar.gz" == ("file",".tar.gz")
splitExtension :: FilePath -> (String, String) Source #
Split on the extension. addExtension
is the inverse.
splitExtension "/directory/path.ext" == ("/directory/path",".ext") uncurry (++) (splitExtension x) == x Valid x => uncurry addExtension (splitExtension x) == x splitExtension "file.txt" == ("file",".txt") splitExtension "file" == ("file","") splitExtension "file/file.txt" == ("file/file",".txt") splitExtension "file.txt/boris" == ("file.txt/boris","") splitExtension "file.txt/boris.ext" == ("file.txt/boris",".ext") splitExtension "file/path.txt.bob.fred" == ("file/path.txt.bob",".fred") splitExtension "file/path.txt/" == ("file/path.txt/","")
splitDrive :: FilePath -> (FilePath, FilePath) Source #
Split a path into a drive and a path. On Posix, / is a Drive.
uncurry (++) (splitDrive x) == x Windows: splitDrive "file" == ("","file") Windows: splitDrive "c:/file" == ("c:/","file") Windows: splitDrive "c:\\file" == ("c:\\","file") Windows: splitDrive "\\\\shared\\test" == ("\\\\shared\\","test") Windows: splitDrive "\\\\shared" == ("\\\\shared","") Windows: splitDrive "\\\\?\\UNC\\shared\\file" == ("\\\\?\\UNC\\shared\\","file") Windows: splitDrive "\\\\?\\UNCshared\\file" == ("\\\\?\\","UNCshared\\file") Windows: splitDrive "\\\\?\\d:\\file" == ("\\\\?\\d:\\","file") Windows: splitDrive "/d" == ("","/d") Posix: splitDrive "/test" == ("/","test") Posix: splitDrive "//test" == ("//","test") Posix: splitDrive "test/file" == ("","test/file") Posix: splitDrive "file" == ("","file")
splitDirectories :: FilePath -> [FilePath] Source #
Just as splitPath
, but don't add the trailing slashes to each element.
splitDirectories "/directory/file.ext" == ["/","directory","file.ext"] splitDirectories "test/file" == ["test","file"] splitDirectories "/test/file" == ["/","test","file"] Windows: splitDirectories "C:\\test\\file" == ["C:\\", "test", "file"] Valid x => joinPath (splitDirectories x) `equalFilePath` x splitDirectories "" == [] Windows: splitDirectories "C:\\test\\\\\\file" == ["C:\\", "test", "file"] splitDirectories "/test///file" == ["/","test","file"]
searchPathSeparator :: Char Source #
The character that is used to separate the entries in the $PATH environment variable.
Windows: searchPathSeparator == ';' Posix: searchPathSeparator == ':'
replaceFileName :: FilePath -> String -> FilePath Source #
Set the filename.
replaceFileName "/directory/other.txt" "file.ext" == "/directory/file.ext" Valid x => replaceFileName x (takeFileName x) == x
replaceExtensions :: FilePath -> String -> FilePath Source #
Replace all extensions of a file with a new extension. Note
that replaceExtension
and addExtension
both work for adding
multiple extensions, so only required when you need to drop
all extensions first.
replaceExtensions "file.fred.bob" "txt" == "file.txt" replaceExtensions "file.fred.bob" "tar.gz" == "file.tar.gz"
replaceExtension :: FilePath -> String -> FilePath Source #
Set the extension of a file, overwriting one if already present, equivalent to -<.>
.
replaceExtension "/directory/path.txt" "ext" == "/directory/path.ext" replaceExtension "/directory/path.txt" ".ext" == "/directory/path.ext" replaceExtension "file.txt" ".bob" == "file.bob" replaceExtension "file.txt" "bob" == "file.bob" replaceExtension "file" ".bob" == "file.bob" replaceExtension "file.txt" "" == "file" replaceExtension "file.fred.bob" "txt" == "file.fred.txt" replaceExtension x y == addExtension (dropExtension x) y
replaceDirectory :: FilePath -> String -> FilePath Source #
Set the directory, keeping the filename the same.
replaceDirectory "root/file.ext" "/directory/" == "/directory/file.ext" Valid x => replaceDirectory x (takeDirectory x) `equalFilePath` x
replaceBaseName :: FilePath -> String -> FilePath Source #
Set the base name.
replaceBaseName "/directory/other.ext" "file" == "/directory/file.ext" replaceBaseName "file/test.txt" "bob" == "file/bob.txt" replaceBaseName "fred" "bill" == "bill" replaceBaseName "/dave/fred/bob.gz.tar" "new" == "/dave/fred/new.tar" Valid x => replaceBaseName x (takeBaseName x) == x
pathSeparators :: [Char] Source #
The list of all possible separators.
Windows: pathSeparators == ['\\', '/'] Posix: pathSeparators == ['/'] pathSeparator `elem` pathSeparators
pathSeparator :: Char Source #
The character that separates directories. In the case where more than
one character is possible, pathSeparator
is the 'ideal' one.
Windows: pathSeparator == '\\' Posix: pathSeparator == '/' isPathSeparator pathSeparator
makeValid :: FilePath -> FilePath Source #
Take a FilePath and make it valid; does not change already valid FilePaths.
isValid (makeValid x) isValid x ==> makeValid x == x makeValid "" == "_" makeValid "file\0name" == "file_name" Windows: makeValid "c:\\already\\/valid" == "c:\\already\\/valid" Windows: makeValid "c:\\test:of_test" == "c:\\test_of_test" Windows: makeValid "test*" == "test_" Windows: makeValid "c:\\test\\nul" == "c:\\test\\nul_" Windows: makeValid "c:\\test\\prn.txt" == "c:\\test\\prn_.txt" Windows: makeValid "c:\\test/prn.txt" == "c:\\test/prn_.txt" Windows: makeValid "c:\\nul\\file" == "c:\\nul_\\file" Windows: makeValid "\\\\\\foo" == "\\\\drive" Windows: makeValid "\\\\?\\D:file" == "\\\\?\\D:\\file" Windows: makeValid "nul .txt" == "nul _.txt"
joinPath :: [FilePath] -> FilePath Source #
Join path elements back together.
joinPath ["/","directory/","file.ext"] == "/directory/file.ext" Valid x => joinPath (splitPath x) == x joinPath [] == "" Posix: joinPath ["test","file","path"] == "test/file/path"
joinDrive :: FilePath -> FilePath -> FilePath Source #
Join a drive and the rest of the path.
Valid x => uncurry joinDrive (splitDrive x) == x Windows: joinDrive "C:" "foo" == "C:foo" Windows: joinDrive "C:\\" "bar" == "C:\\bar" Windows: joinDrive "\\\\share" "foo" == "\\\\share\\foo" Windows: joinDrive "/:" "foo" == "/:\\foo"
isValid :: FilePath -> Bool Source #
Is a FilePath valid, i.e. could you create a file like it? This function checks for invalid names, and invalid characters, but does not check if length limits are exceeded, as these are typically filesystem dependent.
isValid "" == False isValid "\0" == 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 Windows: isValid "\\\\\\foo" == False Windows: isValid "\\\\?\\D:file" == False Windows: isValid "foo\tbar" == False Windows: isValid "nul .txt" == False Windows: isValid " nul.txt" == True
isSearchPathSeparator :: Char -> Bool Source #
Is the character a file separator?
isSearchPathSeparator a == (a == searchPathSeparator)
isRelative :: FilePath -> Bool Source #
Is a path relative, or is it fixed to the root?
Windows: isRelative "path\\test" == True Windows: isRelative "c:\\test" == False Windows: isRelative "c:test" == True Windows: isRelative "c:\\" == False Windows: isRelative "c:/" == False Windows: isRelative "c:" == True Windows: isRelative "\\\\foo" == False Windows: isRelative "\\\\?\\foo" == False Windows: isRelative "\\\\?\\UNC\\foo" == False Windows: isRelative "/foo" == True Windows: isRelative "\\foo" == True Posix: isRelative "test/path" == True Posix: isRelative "/test" == False Posix: isRelative "/" == False
According to [1]:
- "A UNC name of any format [is never relative]."
- "You cannot use the "\?" prefix with a relative path."
isPathSeparator :: Char -> Bool Source #
Rather than using (==
, use this. Test if something
is a path separator.pathSeparator
)
isPathSeparator a == (a `elem` pathSeparators)
isExtensionOf :: String -> FilePath -> Bool Source #
Does the given filename have the specified extension?
"png" `isExtensionOf` "/directory/file.png" == True ".png" `isExtensionOf` "/directory/file.png" == True ".tar.gz" `isExtensionOf` "bar/foo.tar.gz" == True "ar.gz" `isExtensionOf` "bar/foo.tar.gz" == False "png" `isExtensionOf` "/directory/file.png.jpg" == False "csv/table.csv" `isExtensionOf` "/data/csv/table.csv" == False
isExtSeparator :: Char -> Bool Source #
Is the character an extension character?
isExtSeparator a == (a == extSeparator)
isDrive :: FilePath -> Bool Source #
Is an element a drive
Posix: isDrive "/" == True Posix: isDrive "/foo" == False Windows: isDrive "C:\\" == True Windows: isDrive "C:\\foo" == False isDrive "" == False
isAbsolute :: FilePath -> Bool Source #
not . isRelative
isAbsolute x == not (isRelative x)
hasTrailingPathSeparator :: FilePath -> Bool Source #
Is an item either a directory or the last character a path separator?
hasTrailingPathSeparator "test" == False hasTrailingPathSeparator "test/" == True
hasExtension :: FilePath -> Bool Source #
Does the given filename have an extension?
hasExtension "/directory/path.ext" == True hasExtension "/directory/path" == False null (takeExtension x) == not (hasExtension x)
hasDrive :: FilePath -> Bool Source #
Does a path have a drive.
not (hasDrive x) == null (takeDrive x) Posix: hasDrive "/foo" == True Windows: hasDrive "C:\\foo" == True Windows: hasDrive "C:foo" == True hasDrive "foo" == False hasDrive "" == False
extSeparator :: Char Source #
File extension character
extSeparator == '.'
equalFilePath :: FilePath -> FilePath -> Bool Source #
Equality of two FilePath
s.
If you call System.Directory.canonicalizePath
first this has a much better chance of working.
Note that this doesn't follow symlinks or DOSNAM~1s.
x == y ==> equalFilePath x y normalise x == normalise y ==> equalFilePath x y equalFilePath "foo" "foo/" not (equalFilePath "foo" "/foo") Posix: not (equalFilePath "foo" "FOO") Windows: equalFilePath "foo" "FOO" Windows: not (equalFilePath "C:" "C:/")
dropFileName :: FilePath -> FilePath Source #
Drop the filename. Unlike takeDirectory
, this function will leave
a trailing path separator on the directory.
dropFileName "/directory/file.ext" == "/directory/" dropFileName x == fst (splitFileName x)
dropExtensions :: FilePath -> FilePath Source #
Drop all extensions.
dropExtensions "/directory/path.ext" == "/directory/path" dropExtensions "file.tar.gz" == "file" not $ hasExtension $ dropExtensions x not $ any isExtSeparator $ takeFileName $ dropExtensions x
dropExtension :: FilePath -> FilePath Source #
Remove last extension, and the "." preceding it.
dropExtension "/directory/path.ext" == "/directory/path" dropExtension x == fst (splitExtension x)
dropDrive :: FilePath -> FilePath Source #
Delete the drive, if it exists.
dropDrive x == snd (splitDrive x)
addTrailingPathSeparator :: FilePath -> FilePath Source #
Add a trailing file path separator if one is not already present.
hasTrailingPathSeparator (addTrailingPathSeparator x) hasTrailingPathSeparator x ==> addTrailingPathSeparator x == x Posix: addTrailingPathSeparator "test/rest" == "test/rest/"
addExtension :: FilePath -> String -> FilePath Source #
Add an extension, even if there is already one there, equivalent to <.>
.
addExtension "/directory/path" "ext" == "/directory/path.ext" addExtension "file.txt" "bib" == "file.txt.bib" addExtension "file." ".bib" == "file..bib" addExtension "file" ".bib" == "file.bib" addExtension "/" "x" == "/.x" addExtension x "" == x Valid x => takeFileName (addExtension (addTrailingPathSeparator x) "ext") == ".ext" Windows: addExtension "\\\\share" ".txt" == "\\\\share\\.txt"
(<.>) :: FilePath -> String -> FilePath infixr 7 Source #
Add an extension, even if there is already one there, equivalent to addExtension
.
"/directory/path" <.> "ext" == "/directory/path.ext" "/directory/path" <.> ".ext" == "/directory/path.ext"
(-<.>) :: FilePath -> String -> FilePath infixr 7 Source #
Remove the current extension and add another, equivalent to replaceExtension
.
"/directory/path.txt" -<.> "ext" == "/directory/path.ext" "/directory/path.txt" -<.> ".ext" == "/directory/path.ext" "foo.o" -<.> "c" == "foo.c"
getSearchPath :: MonadIO m => m [FilePath] Source #
Lifted version of getSearchPath