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Copy pathnturl2path.py
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58 lines (53 loc) · 1.88 KB
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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.
"""
import ntpath
# Testing is done through test_urllib.
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 string, urllib.parse
# Windows itself uses ":" even in URLs.
url = url.replace(':', '|')
if not '|' in url:
# No drive specifier, just convert slashes
if url[:4] == '////':
# path is something like ////host/path/on/remote/host
# convert this to \\host\path\on\remote\host
# (notice halving of slashes at the start of the path)
url = url[2:]
components = url.split('/')
# make sure not to convert quoted slashes :-)
return urllib.parse.unquote('\\'.join(components))
comp = url.split('|')
if len(comp) != 2 or comp[0][-1] not in string.ascii_letters:
error = 'Bad URL: ' + url
raise OSError(error)
drive = comp[0][-1].upper()
components = comp[1].split('/')
path = drive + ':'
for comp in components:
if comp:
path = path + '\\' + urllib.parse.unquote(comp)
# Issue #11474 - handing url such as |c/|
if path.endswith(':') and url.endswith('/'):
path += '\\'
return path
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
try:
return ntpath.fileuri(p).removeprefix('file:')
except ValueError:
raise OSError('Bad path: ' + p)