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import posixpath
from pathlib_abc import PathInfo, ReadablePath
class MissingInfo(PathInfo):
__slots__ = ()
def exists(self, follow_symlinks=True): return False
def is_dir(self, follow_symlinks=True): return False
def is_file(self, follow_symlinks=True): return False
def is_symlink(self): return False
class ZipPathInfo(PathInfo):
__slots__ = ('zip_info', 'children')
def __init__(self):
self.zip_info = None
self.children = {}
def exists(self, follow_symlinks=True):
return True
def is_dir(self, follow_symlinks=True):
if self.zip_info is None:
return True
else:
return self.zip_info.filename.endswith('/')
def is_file(self, follow_symlinks=True):
if self.zip_info is None:
return False
else:
return not self.zip_info.filename.endswith('/')
def is_symlink(self):
return False
def resolve(self, path, create=False):
if not path:
return self
name, _, path = path.partition('/')
if not name:
info = self
elif name in self.children:
info = self.children[name]
elif create:
info = self.children[name] = ZipPathInfo()
else:
return MissingInfo()
return info.resolve(path, create)
class ZipPath(ReadablePath):
__slots__ = ('_segments', 'zip_file')
parser = posixpath
def __init__(self, *pathsegments, zip_file):
self._segments = pathsegments
self.zip_file = zip_file
if not hasattr(zip_file, 'filetree'):
# Read the contents into a tree of ZipPathInfo objects.
zip_file.filetree = ZipPathInfo()
for zip_info in zip_file.filelist:
info = zip_file.filetree.resolve(zip_info.filename, create=True)
info.zip_info = zip_info
def __str__(self):
if not self._segments:
return ''
return self.parser.join(*self._segments)
def with_segments(self, *pathsegments):
return type(self)(*pathsegments, zip_file=self.zip_file)
@property
def info(self):
return self.zip_file.filetree.resolve(str(self))
def __open_rb__(self, buffering=-1):
return self.zip_file.open(self.info.zip_info, 'r')
def iterdir(self):
return (self / name for name in self.info.children)
def readlink(self):
raise NotImplementedError
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