1  # This source file is part of the Swift.org open source project
 2  #
 3  # Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
 4  # Licensed under Apache License v2.0 with Runtime Library Exception
 5  #
 6  # See http://swift.org/LICENSE.txt for license information
 7  # See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
 8  #
 9  
10  import os
11  
12  class Path:
13  	_path = None
14  	def __init__(self, path):
15  		if isinstance(path, Path):
16  			self._path = path.absolute()
17  		elif os.path.isabs(path):
18  			self._path = os.path.abspath(path)
19  		else:
20  			self._path = path
21  
22  	def relative(self, base=os.getcwd()):
23  		return os.path.relpath(self._path, base)
24  
25  	def absolute(self):
26  		return self._path
27  
28  	@staticmethod
29  	def path(path):
30  		if path is None:
31  			return None
32  		else:
33  			return Path(path)
34  
35  	def path_by_appending(self, comps):
36  		return Path.path(os.path.join(self._path, comps))
37  
38  	def basename(self):
39  		return os.path.basename(self._path)
40  
41  	def extension(self):
42  		name, ext = os.path.splitext(self._path)
43  		return ext
44  
45  	def parent(self):
46  		path, _ = os.path.split(self._path)
47  		return Path(path)