mirror of
https://github.com/SickGear/SickGear.git
synced 2024-11-22 21:05:05 +00:00
95 lines
3.2 KiB
Python
95 lines
3.2 KiB
Python
# This file is dual licensed under the terms of the Apache License, Version
|
|
# 2.0, and the BSD License. See the LICENSE file in the root of this repository
|
|
# for complete details.
|
|
|
|
import urllib.parse
|
|
from typing import Any, List, Optional, Set
|
|
|
|
from ._parser import parse_requirement as _parse_requirement
|
|
from ._tokenizer import ParserSyntaxError
|
|
from .markers import Marker, _normalize_extra_values
|
|
from .specifiers import SpecifierSet
|
|
|
|
|
|
class InvalidRequirement(ValueError):
|
|
"""
|
|
An invalid requirement was found, users should refer to PEP 508.
|
|
"""
|
|
|
|
|
|
class Requirement:
|
|
"""Parse a requirement.
|
|
|
|
Parse a given requirement string into its parts, such as name, specifier,
|
|
URL, and extras. Raises InvalidRequirement on a badly-formed requirement
|
|
string.
|
|
"""
|
|
|
|
# TODO: Can we test whether something is contained within a requirement?
|
|
# If so how do we do that? Do we need to test against the _name_ of
|
|
# the thing as well as the version? What about the markers?
|
|
# TODO: Can we normalize the name and extra name?
|
|
|
|
def __init__(self, requirement_string: str) -> None:
|
|
try:
|
|
parsed = _parse_requirement(requirement_string)
|
|
except ParserSyntaxError as e:
|
|
raise InvalidRequirement(str(e)) from e
|
|
|
|
self.name: str = parsed.name
|
|
if parsed.url:
|
|
parsed_url = urllib.parse.urlparse(parsed.url)
|
|
if parsed_url.scheme == "file":
|
|
if urllib.parse.urlunparse(parsed_url) != parsed.url:
|
|
raise InvalidRequirement("Invalid URL given")
|
|
elif not (parsed_url.scheme and parsed_url.netloc) or (
|
|
not parsed_url.scheme and not parsed_url.netloc
|
|
):
|
|
raise InvalidRequirement(f"Invalid URL: {parsed.url}")
|
|
self.url: Optional[str] = parsed.url
|
|
else:
|
|
self.url = None
|
|
self.extras: Set[str] = set(parsed.extras if parsed.extras else [])
|
|
self.specifier: SpecifierSet = SpecifierSet(parsed.specifier)
|
|
self.marker: Optional[Marker] = None
|
|
if parsed.marker is not None:
|
|
self.marker = Marker.__new__(Marker)
|
|
self.marker._markers = _normalize_extra_values(parsed.marker)
|
|
|
|
def __str__(self) -> str:
|
|
parts: List[str] = [self.name]
|
|
|
|
if self.extras:
|
|
formatted_extras = ",".join(sorted(self.extras))
|
|
parts.append(f"[{formatted_extras}]")
|
|
|
|
if self.specifier:
|
|
parts.append(str(self.specifier))
|
|
|
|
if self.url:
|
|
parts.append(f"@ {self.url}")
|
|
if self.marker:
|
|
parts.append(" ")
|
|
|
|
if self.marker:
|
|
parts.append(f"; {self.marker}")
|
|
|
|
return "".join(parts)
|
|
|
|
def __repr__(self) -> str:
|
|
return f"<Requirement('{self}')>"
|
|
|
|
def __hash__(self) -> int:
|
|
return hash((self.__class__.__name__, str(self)))
|
|
|
|
def __eq__(self, other: Any) -> bool:
|
|
if not isinstance(other, Requirement):
|
|
return NotImplemented
|
|
|
|
return (
|
|
self.name == other.name
|
|
and self.extras == other.extras
|
|
and self.specifier == other.specifier
|
|
and self.url == other.url
|
|
and self.marker == other.marker
|
|
)
|