foundation-0.0.13: Alternative prelude with batteries and no dependencies

LicenseBSD-style
Maintainerfoundation
Stabilityexperimental
Portabilityportable
Safe HaskellNone
LanguageHaskell2010

Foundation.VFS.Path

Contents

Description

 

Synopsis

Path class

class Path path where

Path type class

defines the Path associated types and basic functions to implement related to the path manipulation

# TODO, add missing enhancement:

splitExtension :: PathEnt path -> (PathEnt path, PathEnt path)
addExtension  :: PathEnt path -> PathEnt path -> PathEnt path
(.) :: path -> PathEnt path -> path
(-.) :: path -> PathEnt path -> path

Associated Types

type PathEnt path

the associated PathEntity of the given path this type is the minimal element contained in the Path a Path is not a collection but it is possible to see this associated type equivalent to the Element type family

type PathPrefix path

the associated prefix of the given path

in the case of a FilePath, it is a void (i.e. `()`) in the case of a URI, it is the schema, host, port...

type PathSuffix path

the associated suffix of the given path

in the case of the FilePath, it is a void (i.e. `()`) in the case of the URI, it is a the query, the fragment

Methods

(</>) :: path -> PathEnt path -> path

join a path entity to a given path

splitPath :: path -> (PathPrefix path, [PathEnt path], PathSuffix path)

split the path into the associated elements

buildPath :: (PathPrefix path, [PathEnt path], PathSuffix path) -> path

build the path from the associated elements

Instances

parent :: Path path => path -> path

parent is only going to drop the filename.

if you actually want to reference to the parent directory, simply uses:

parent "." = "." <> ".."
>>> parent ("foo.hs" :: FilePath)
.
>>> parent ("foo/bar/baz.hs" :: FilePath)
foo/bar

filename :: (Path path, Monoid (PathEnt path)) => path -> PathEnt path

get the filename of the given path

If there is no filename, you will receive the mempty of the PathEnt

>>> filename ("foo.hs" :: FilePath)
foo.hs
>>> filename ("foo/bar/baz.hs" :: FilePath)
baz.hs

prefix :: Path path => path -> PathPrefix path

get the path prefix information

>>> prefix ("/home/tab" :: FilePath)
Absolute
>>> prefix ("home/tab" :: FilePath)
Relative

or for URI (TODO, not yet accurate)

prefix "http://github.com/vincenthz/hs-foundation?w=1"
   == URISchema http Nothing Nothing "github.com" Nothing

suffix :: Path path => path -> PathSuffix path

get the path suffix information

>>> suffix ("/home/tab" :: FilePath)
()

or for URI (TODO, not yet accurate)

suffix "http://github.com/vincenthz/hs-foundation?w=1"
   == URISuffix (["w", "1"], Nothing)