/usr/lib/python2.7/dist-packages/rfc3986/parseresult.py is in python-rfc3986 0.3.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (c) 2015 Ian Cordasco
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from collections import namedtuple
from . import compat
from . import exceptions
from . import normalizers
from . import uri
__all__ = ('ParseResult', 'ParseResultBytes')
PARSED_COMPONENTS = ('scheme', 'userinfo', 'host', 'port', 'path', 'query',
'fragment')
class ParseResultMixin(object):
def _generate_authority(self, attributes):
# I swear I did not align the comparisons below. That's just how they
# happened to align based on pep8 and attribute lengths.
userinfo, host, port = (attributes[p]
for p in ('userinfo', 'host', 'port'))
if (self.userinfo != userinfo or
self.host != host or
self.port != port):
if port:
port = '{0}'.format(port)
return normalizers.normalize_authority(
(compat.to_str(userinfo, self.encoding),
compat.to_str(host, self.encoding),
port)
)
return self.authority
def geturl(self):
"""Standard library shim to the unsplit method."""
return self.unsplit()
@property
def hostname(self):
"""Standard library shim for the host portion of the URI."""
return self.host
@property
def netloc(self):
"""Standard library shim for the authority portion of the URI."""
return self.authority
@property
def params(self):
"""Standard library shim for the query portion of the URI."""
return self.query
class ParseResult(namedtuple('ParseResult', PARSED_COMPONENTS),
ParseResultMixin):
slots = ()
def __new__(cls, scheme, userinfo, host, port, path, query, fragment,
uri_ref, encoding='utf-8'):
parse_result = super(ParseResult, cls).__new__(
cls,
scheme or None,
userinfo or None,
host,
port or None,
path or None,
query,
fragment)
parse_result.encoding = encoding
parse_result.reference = uri_ref
return parse_result
@classmethod
def from_string(cls, uri_string, encoding='utf-8', strict=True):
"""Parse a URI from the given unicode URI string.
:param str uri_string: Unicode URI to be parsed into a reference.
:param str encoding: The encoding of the string provided
:param bool strict: Parse strictly according to :rfc:`3986` if True.
If False, parse similarly to the standard library's urlparse
function.
:returns: :class:`ParseResult` or subclass thereof
"""
reference = uri.URIReference.from_string(uri_string, encoding)
try:
subauthority = reference.authority_info()
except exceptions.InvalidAuthority:
if strict:
raise
userinfo, host, port = split_authority(reference.authority)
else:
# Thanks to Richard Barrell for this idea:
# https://twitter.com/0x2ba22e11/status/617338811975139328
userinfo, host, port = (subauthority.get(p)
for p in ('userinfo', 'host', 'port'))
if port:
try:
port = int(port)
except ValueError:
raise exceptions.InvalidPort(port)
return cls(scheme=reference.scheme,
userinfo=userinfo,
host=host,
port=port,
path=reference.path,
query=reference.query,
fragment=reference.fragment,
uri_ref=reference,
encoding=encoding)
@property
def authority(self):
"""Normalized authority generated from the subauthority parts."""
return self.reference.authority
def copy_with(self, scheme=None, userinfo=None, host=None, port=None,
path=None, query=None, fragment=None):
attributes = zip(PARSED_COMPONENTS,
(scheme, userinfo, host, port, path, query, fragment))
attrs_dict = {}
for name, value in attributes:
if value is None:
value = getattr(self, name)
attrs_dict[name] = value
authority = self._generate_authority(attrs_dict)
ref = self.reference.copy_with(scheme=attrs_dict['scheme'],
authority=authority,
path=attrs_dict['path'],
query=attrs_dict['query'],
fragment=attrs_dict['fragment'])
return ParseResult(uri_ref=ref, encoding=self.encoding, **attrs_dict)
def encode(self, encoding=None):
encoding = encoding or self.encoding
attrs = dict(
zip(PARSED_COMPONENTS,
(attr.encode(encoding) if hasattr(attr, 'encode') else attr
for attr in self)))
return ParseResultBytes(
uri_ref=self.reference,
encoding=encoding,
**attrs
)
def unsplit(self, use_idna=False):
"""Create a URI string from the components.
:returns: The parsed URI reconstituted as a string.
:rtype: str
"""
parse_result = self
if use_idna and self.host:
hostbytes = self.host.encode('idna')
host = hostbytes.decode(self.encoding)
parse_result = self.copy_with(host=host)
return parse_result.reference.unsplit()
class ParseResultBytes(namedtuple('ParseResultBytes', PARSED_COMPONENTS),
ParseResultMixin):
def __new__(cls, scheme, userinfo, host, port, path, query, fragment,
uri_ref, encoding='utf-8'):
parse_result = super(ParseResultBytes, cls).__new__(
cls,
scheme or None,
userinfo or None,
host,
port or None,
path or None,
query or None,
fragment or None)
parse_result.encoding = encoding
parse_result.reference = uri_ref
return parse_result
@classmethod
def from_string(cls, uri_string, encoding='utf-8', strict=True):
"""Parse a URI from the given unicode URI string.
:param str uri_string: Unicode URI to be parsed into a reference.
:param str encoding: The encoding of the string provided
:param bool strict: Parse strictly according to :rfc:`3986` if True.
If False, parse similarly to the standard library's urlparse
function.
:returns: :class:`ParseResultBytes` or subclass thereof
"""
reference = uri.URIReference.from_string(uri_string, encoding)
try:
subauthority = reference.authority_info()
except exceptions.InvalidAuthority:
if strict:
raise
userinfo, host, port = split_authority(reference.authority)
else:
# Thanks to Richard Barrell for this idea:
# https://twitter.com/0x2ba22e11/status/617338811975139328
userinfo, host, port = (subauthority.get(p)
for p in ('userinfo', 'host', 'port'))
if port:
try:
port = int(port)
except ValueError:
raise exceptions.InvalidPort(port)
to_bytes = compat.to_bytes
return cls(scheme=to_bytes(reference.scheme, encoding),
userinfo=to_bytes(userinfo, encoding),
host=to_bytes(host, encoding),
port=port,
path=to_bytes(reference.path, encoding),
query=to_bytes(reference.query, encoding),
fragment=to_bytes(reference.fragment, encoding),
uri_ref=reference,
encoding=encoding)
@property
def authority(self):
"""Normalized authority generated from the subauthority parts."""
return self.reference.authority.encode(self.encoding)
def copy_with(self, scheme=None, userinfo=None, host=None, port=None,
path=None, query=None, fragment=None):
attributes = zip(PARSED_COMPONENTS,
(scheme, userinfo, host, port, path, query, fragment))
attrs_dict = {}
for name, value in attributes:
if value is None:
value = getattr(self, name)
if not isinstance(value, bytes) and hasattr(value, 'encode'):
value = value.encode(self.encoding)
attrs_dict[name] = value
authority = self._generate_authority(attrs_dict)
to_str = compat.to_str
ref = self.reference.copy_with(
scheme=to_str(attrs_dict['scheme'], self.encoding),
authority=authority,
path=to_str(attrs_dict['path'], self.encoding),
query=to_str(attrs_dict['query'], self.encoding),
fragment=to_str(attrs_dict['fragment'], self.encoding)
)
return ParseResultBytes(
uri_ref=ref,
encoding=self.encoding,
**attrs_dict
)
def unsplit(self, use_idna=False):
"""Create a URI bytes object from the components.
:returns: The parsed URI reconstituted as a string.
:rtype: bytes
"""
parse_result = self
if use_idna and self.host:
# self.host is bytes, to encode to idna, we need to decode it
# first
host = self.host.decode(self.encoding)
hostbytes = host.encode('idna')
parse_result = self.copy_with(host=hostbytes)
uri = parse_result.reference.unsplit()
return uri.encode(self.encoding)
def split_authority(authority):
# Initialize our expected return values
userinfo = host = port = None
# Initialize an extra var we may need to use
extra_host = None
# Set-up rest in case there is no userinfo portion
rest = authority
if '@' in authority:
userinfo, rest = authority.rsplit('@', 1)
# Handle IPv6 host addresses
if rest.startswith('['):
host, rest = rest.split(']', 1)
host += ']'
if ':' in rest:
extra_host, port = rest.split(':', 1)
elif not host and rest:
host = rest
if extra_host and not host:
host = extra_host
return userinfo, host, port
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