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"""Convert a NT pathname to a file URL and vice versa.
This module only exists to provide OS-specific code
for urllib.requests, thus do not use directly.
"""
# Testing is done through test_nturl2path.
import warnings
warnings._deprecated(
__name__,
message=f"{warnings._DEPRECATED_MSG}; use 'urllib.request' instead",
remove=(3, 19))
def url2pathname(url):
"""OS-specific conversion from a relative URL of the 'file' scheme
to a file system path; not recommended for general use."""
# e.g.
# ///C|/foo/bar/spam.foo
# and
# ///C:/foo/bar/spam.foo
# become
# C:\foo\bar\spam.foo
import urllib.parse
if url[:3] == '///':
# URL has an empty authority section, so the path begins on the third
# character.
url = url[2:]
elif url[:12] == '//localhost/':
# Skip past 'localhost' authority.
url = url[11:]
if url[:3] == '///':
# Skip past extra slash before UNC drive in URL path.
url = url[1:]
else:
if url[:1] == '/' and url[2:3] in (':', '|'):
# Skip past extra slash before DOS drive in URL path.
url = url[1:]
if url[1:2] == '|':
# Older URLs use a pipe after a drive letter
url = url[:1] + ':' + url[2:]
return urllib.parse.unquote(url.replace('/', '\\'))
def pathname2url(p):
"""OS-specific conversion from a file system path to a relative URL
of the 'file' scheme; not recommended for general use."""
# e.g.
# C:\foo\bar\spam.foo
# becomes
# ///C:/foo/bar/spam.foo
import ntpath
import urllib.parse
# First, clean up some special forms. We are going to sacrifice
# the additional information anyway
p = p.replace('\\', '/')
if p[:4] == '//?/':
p = p[4:]
if p[:4].upper() == 'UNC/':
p = '//' + p[4:]
drive, root, tail = ntpath.splitroot(p)
if drive:
if drive[1:] == ':':
# DOS drive specified. Add three slashes to the start, producing
# an authority section with a zero-length authority, and a path
# section starting with a single slash.
drive = f'///{drive}'
drive = urllib.parse.quote(drive, safe='/:')
elif root:
# Add explicitly empty authority to path beginning with one slash.
root = f'//{root}'
tail = urllib.parse.quote(tail)
return drive + root + tail
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