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"""Borrowed from the pip code base"""
from __future__ import annotations
from urllib.parse import urlsplit
from urllib.request import url2pathname
from packaging.utils import canonicalize_name
VCS = ["ftp", "ssh", "git", "hg", "bzr", "sftp", "svn"]
VALID_SCHEMAS = ["http", "https", "file"] + VCS
def is_url(name: str) -> bool:
return get_url_scheme(name) in VALID_SCHEMAS
def get_url_scheme(url: str) -> str | None:
if ":" not in url:
return None
return url.split(":", 1)[0].lower()
def url_to_path(url: str) -> str:
_, netloc, path, _, _ = urlsplit(url)
if not netloc or netloc == "localhost": # According to RFC 8089, same as empty authority.
netloc = ""
else:
raise ValueError(f"non-local file URIs are not supported on this platform: {url!r}")
path = url2pathname(netloc + path)
return path
def handle_binary_option(value: str, target: set[str], other: set[str]) -> None:
new = value.split(",")
while ":all:" in new:
other.clear()
target.clear()
target.add(":all:")
del new[: new.index(":all:") + 1]
if ":none:" not in new:
return
for name in new:
if name == ":none:":
target.clear()
continue
name = canonicalize_name(name)
other.discard(name)
target.add(name)
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