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"""
Implementation of ReadablePath for local paths, for use in pathlib tests.
LocalPathGround is also defined here. It helps establish the "ground truth"
about local paths in tests.
"""
import os
import pathlib.types
from test.support import os_helper
from test.test_pathlib.support.lexical_path import LexicalPath
class LocalPathGround:
can_symlink = os_helper.can_symlink()
def __init__(self, path_cls):
self.path_cls = path_cls
def setup(self, local_suffix=""):
root = self.path_cls(os_helper.TESTFN + local_suffix)
os.mkdir(root)
return root
def teardown(self, root):
os_helper.rmtree(root)
def create_file(self, p, data=b''):
with open(p, 'wb') as f:
f.write(data)
def create_dir(self, p):
os.mkdir(p)
def create_symlink(self, p, target):
os.symlink(target, p)
def create_hierarchy(self, p):
os.mkdir(os.path.join(p, 'dirA'))
os.mkdir(os.path.join(p, 'dirB'))
os.mkdir(os.path.join(p, 'dirC'))
os.mkdir(os.path.join(p, 'dirC', 'dirD'))
with open(os.path.join(p, 'fileA'), 'wb') as f:
f.write(b"this is file A\n")
with open(os.path.join(p, 'dirB', 'fileB'), 'wb') as f:
f.write(b"this is file B\n")
with open(os.path.join(p, 'dirC', 'fileC'), 'wb') as f:
f.write(b"this is file C\n")
with open(os.path.join(p, 'dirC', 'novel.txt'), 'wb') as f:
f.write(b"this is a novel\n")
with open(os.path.join(p, 'dirC', 'dirD', 'fileD'), 'wb') as f:
f.write(b"this is file D\n")
if self.can_symlink:
# Relative symlinks.
os.symlink('fileA', os.path.join(p, 'linkA'))
os.symlink('non-existing', os.path.join(p, 'brokenLink'))
os.symlink('dirB',
os.path.join(p, 'linkB'),
target_is_directory=True)
os.symlink(os.path.join('..', 'dirB'),
os.path.join(p, 'dirA', 'linkC'),
target_is_directory=True)
# Broken symlink (pointing to itself).
os.symlink('brokenLinkLoop', os.path.join(p, 'brokenLinkLoop'))
isdir = staticmethod(os.path.isdir)
isfile = staticmethod(os.path.isfile)
islink = staticmethod(os.path.islink)
readlink = staticmethod(os.readlink)
def readtext(self, p):
with open(p, 'r') as f:
return f.read()
def readbytes(self, p):
with open(p, 'rb') as f:
return f.read()
class LocalPathInfo(pathlib.types.PathInfo):
"""
Simple implementation of PathInfo for a local path
"""
__slots__ = ('_path', '_exists', '_is_dir', '_is_file', '_is_symlink')
def __init__(self, path):
self._path = str(path)
self._exists = None
self._is_dir = None
self._is_file = None
self._is_symlink = None
def exists(self, *, follow_symlinks=True):
"""Whether this path exists."""
if not follow_symlinks and self.is_symlink():
return True
if self._exists is None:
self._exists = os.path.exists(self._path)
return self._exists
def is_dir(self, *, follow_symlinks=True):
"""Whether this path is a directory."""
if not follow_symlinks and self.is_symlink():
return False
if self._is_dir is None:
self._is_dir = os.path.isdir(self._path)
return self._is_dir
def is_file(self, *, follow_symlinks=True):
"""Whether this path is a regular file."""
if not follow_symlinks and self.is_symlink():
return False
if self._is_file is None:
self._is_file = os.path.isfile(self._path)
return self._is_file
def is_symlink(self):
"""Whether this path is a symbolic link."""
if self._is_symlink is None:
self._is_symlink = os.path.islink(self._path)
return self._is_symlink
class ReadableLocalPath(pathlib.types._ReadablePath, LexicalPath):
"""
Simple implementation of a ReadablePath class for local filesystem paths.
"""
__slots__ = ('info',)
def __init__(self, *pathsegments):
super().__init__(*pathsegments)
self.info = LocalPathInfo(self)
def __fspath__(self):
return str(self)
def __open_rb__(self, buffering=-1):
return open(self, 'rb')
def iterdir(self):
return (self / name for name in os.listdir(self))
def readlink(self):
return self.with_segments(os.readlink(self))
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