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import os
import sys
from pip._vendor.six.moves.urllib import parse as urllib_parse
from pip._vendor.six.moves.urllib import request as urllib_request
from pip._internal.utils.typing import MYPY_CHECK_RUNNING
if MYPY_CHECK_RUNNING:
from typing import Optional, Text, Union
def get_url_scheme(url):
# type: (Union[str, Text]) -> Optional[Text]
if ':' not in url:
return None
return url.split(':', 1)[0].lower()
def path_to_url(path):
# type: (Union[str, Text]) -> str
"""
Convert a path to a file: URL. The path will be made absolute and have
quoted path parts.
"""
path = os.path.normpath(os.path.abspath(path))
url = urllib_parse.urljoin('file:', urllib_request.pathname2url(path))
return url
def url_to_path(url):
# type: (str) -> str
"""
Convert a file: URL to a path.
"""
assert url.startswith('file:'), (
"You can only turn file: urls into filenames (not {url!r})"
.format(**locals()))
_, netloc, path, _, _ = urllib_parse.urlsplit(url)
if not netloc or netloc == 'localhost':
# According to RFC 8089, same as empty authority.
netloc = ''
elif sys.platform == 'win32':
# If we have a UNC path, prepend UNC share notation.
netloc = '\\\\' + netloc
else:
raise ValueError(
'non-local file URIs are not supported on this platform: {url!r}'
.format(**locals())
)
path = urllib_request.url2pathname(netloc + path)
return path