def content_options(self):
requirements = set()
if self.next_path_segments:
format_segment = path_head(self.next_path_segments)
for field_name in get_format_str_fields(format_segment):
if field_name not in self.format_token_generators:
raise ValueError("Unknown format field name '%s' in format string '%s'" % (field_name, format_segment))
requirements.update(self.format_token_generators[field_name].requirements)
return requirements
def _mk_sub_path(self, new_known_data: Dict[DataField, Any] = None, increment_path_segments=True, **kwargs):
assert self.is_folder, "__mk_sub_path called on non-folder %s" % self
args = attr.asdict(self, recurse=False)
args["parent"] = self
args["known_data"] = dict(self.known_data)
if increment_path_segments:
args.update(path_segments=self.path_segments + (path_head(self.next_path_segments),),
next_path_segments=path_tail(self.next_path_segments))
else:
args.update(path_segments=self.path_segments,
next_path_segments=self.next_path_segments)
if new_known_data:
args["known_data"].update(new_known_data)
args.update(kwargs)
return self.__class__(**args)
async def resolve(self, rel_path) -> Optional['RealPath']:
rel_path = normalize_path(rel_path)
if rel_path == "":
return self
if os.name == 'nt':
# on Windows, all file names will be converted to upper case
eq = lambda x, y: x.upper() == y.upper()
else:
eq = lambda x, y: x == y
resolved_real_file = None
for content_file in await self.list_contents():
if eq(rel_path, content_file.path): # Exact Match
resolved_real_file = content_file
break
elif eq(path_head(rel_path),
path_name(content_file.path)): # Found Parent
resolved_real_file = await content_file.resolve(
path_tail(rel_path))
break
else: # Other File
continue
return resolved_real_file