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Edit File : link.py \| Size : 6.70 KB
# The following comment should be removed at some point in the future. # mypy: disallow-untyped-defs=False import os import posixpath import re from pip._vendor.six.moves.urllib import parse as urllib_parse from pip._internal.utils.filetypes import WHEEL_EXTENSION from pip._internal.utils.misc import ( redact_auth_from_url, split_auth_from_netloc, splitext, ) from pip._internal.utils.models import KeyBasedCompareMixin from pip._internal.utils.typing import MYPY_CHECK_RUNNING from pip._internal.utils.urls import path_to_url, url_to_path if MYPY_CHECK_RUNNING: from typing import Optional, Text, Tuple, Union from pip._internal.collector import HTMLPage from pip._internal.utils.hashes import Hashes class Link(KeyBasedCompareMixin): """Represents a parsed link from a Package Index's simple URL """ def __init__( self, url, # type: str comes_from=None, # type: Optional[Union[str, HTMLPage]] requires_python=None, # type: Optional[str] yanked_reason=None, # type: Optional[Text] ): # type: (...) -> None """ :param url: url of the resource pointed to (href of the link) :param comes_from: instance of HTMLPage where the link was found, or string. :param requires_python: String containing the `Requires-Python` metadata field, specified in PEP 345. This may be specified by a data-requires-python attribute in the HTML link tag, as described in PEP 503. :param yanked_reason: the reason the file has been yanked, if the file has been yanked, or None if the file hasn't been yanked. This is the value of the "data-yanked" attribute, if present, in a simple repository HTML link. If the file has been yanked but no reason was provided, this should be the empty string. See PEP 592 for more information and the specification. """ # url can be a UNC windows share if url.startswith('\\\\'): url = path_to_url(url) self._parsed_url = urllib_parse.urlsplit(url) # Store the url as a private attribute to prevent accidentally # trying to set a new value. self._url = url self.comes_from = comes_from self.requires_python = requires_python if requires_python else None self.yanked_reason = yanked_reason super(Link, self).__init__(key=url, defining_class=Link) def __str__(self): if self.requires_python: rp = ' (requires-python:%s)' % self.requires_python else: rp = '' if self.comes_from: return '%s (from %s)%s' % (redact_auth_from_url(self._url), self.comes_from, rp) else: return redact_auth_from_url(str(self._url)) def __repr__(self): return '<Link %s>' % self @property def url(self): # type: () -> str return self._url @property def filename(self): # type: () -> str path = self.path.rstrip('/') name = posixpath.basename(path) if not name: # Make sure we don't leak auth information if the netloc # includes a username and password. netloc, user_pass = split_auth_from_netloc(self.netloc) return netloc name = urllib_parse.unquote(name) assert name, ('URL %r produced no filename' % self._url) return name @property def file_path(self): # type: () -> str return url_to_path(self.url) @property def scheme(self): # type: () -> str return self._parsed_url.scheme @property def netloc(self): # type: () -> str """ This can contain auth information. """ return self._parsed_url.netloc @property def path(self): # type: () -> str return urllib_parse.unquote(self._parsed_url.path) def splitext(self): # type: () -> Tuple[str, str] return splitext(posixpath.basename(self.path.rstrip('/'))) @property def ext(self): # type: () -> str return self.splitext()[1] @property def url_without_fragment(self): # type: () -> str scheme, netloc, path, query, fragment = self._parsed_url return urllib_parse.urlunsplit((scheme, netloc, path, query, None)) _egg_fragment_re = re.compile(r'[#&]egg=([^&])') @property def egg_fragment(self): # type: () -> Optional[str] match = self._egg_fragment_re.search(self._url) if not match: return None return match.group(1) _subdirectory_fragment_re = re.compile(r'[#&]subdirectory=([^&])') @property def subdirectory_fragment(self): # type: () -> Optional[str] match = self._subdirectory_fragment_re.search(self._url) if not match: return None return match.group(1) _hash_re = re.compile( r'(sha1\|sha224\|sha384\|sha256\|sha512\|md5)=([a-f0-9]+)' ) @property def hash(self): # type: () -> Optional[str] match = self._hash_re.search(self._url) if match: return match.group(2) return None @property def hash_name(self): # type: () -> Optional[str] match = self._hash_re.search(self._url) if match: return match.group(1) return None @property def show_url(self): # type: () -> Optional[str] return posixpath.basename(self._url.split('#', 1)[0].split('?', 1)[0]) @property def is_file(self): # type: () -> bool return self.scheme == 'file' def is_existing_dir(self): # type: () -> bool return self.is_file and os.path.isdir(self.file_path) @property def is_wheel(self): # type: () -> bool return self.ext == WHEEL_EXTENSION @property def is_vcs(self): # type: () -> bool from pip._internal.vcs import vcs return self.scheme in vcs.all_schemes @property def is_yanked(self): # type: () -> bool return self.yanked_reason is not None @property def has_hash(self): return self.hash_name is not None def is_hash_allowed(self, hashes): # type: (Optional[Hashes]) -> bool """ Return True if the link has a hash and it is allowed. """ if hashes is None or not self.has_hash: return False # Assert non-None so mypy knows self.hash_name and self.hash are str. assert self.hash_name is not None assert self.hash is not None return hashes.is_hash_allowed(self.hash_name, hex_digest=self.hash) Back

Edit File : link.py | Size : 6.70 KB

# The following comment should be removed at some point in the future.
# mypy: disallow-untyped-defs=False

import os
import posixpath
import re

from pip._vendor.six.moves.urllib import parse as urllib_parse

from pip._internal.utils.filetypes import WHEEL_EXTENSION
from pip._internal.utils.misc import (
    redact_auth_from_url,
    split_auth_from_netloc,
    splitext,
)
from pip._internal.utils.models import KeyBasedCompareMixin
from pip._internal.utils.typing import MYPY_CHECK_RUNNING
from pip._internal.utils.urls import path_to_url, url_to_path

if MYPY_CHECK_RUNNING:
    from typing import Optional, Text, Tuple, Union
    from pip._internal.collector import HTMLPage
    from pip._internal.utils.hashes import Hashes

class Link(KeyBasedCompareMixin):
    """Represents a parsed link from a Package Index's simple URL
    """

def __init__(
        self,
        url,                   # type: str
        comes_from=None,       # type: Optional[Union[str, HTMLPage]]
        requires_python=None,  # type: Optional[str]
        yanked_reason=None,    # type: Optional[Text]
    ):
        # type: (...) -> None
        """
        :param url: url of the resource pointed to (href of the link)
        :param comes_from: instance of HTMLPage where the link was found,
            or string.
        :param requires_python: String containing the `Requires-Python`
            metadata field, specified in PEP 345. This may be specified by
            a data-requires-python attribute in the HTML link tag, as
            described in PEP 503.
        :param yanked_reason: the reason the file has been yanked, if the
            file has been yanked, or None if the file hasn't been yanked.
            This is the value of the "data-yanked" attribute, if present, in
            a simple repository HTML link. If the file has been yanked but
            no reason was provided, this should be the empty string. See
            PEP 592 for more information and the specification.
        """

# url can be a UNC windows share
        if url.startswith('\\\\'):
            url = path_to_url(url)

self._parsed_url = urllib_parse.urlsplit(url)
        # Store the url as a private attribute to prevent accidentally
        # trying to set a new value.
        self._url = url

self.comes_from = comes_from
        self.requires_python = requires_python if requires_python else None
        self.yanked_reason = yanked_reason

super(Link, self).__init__(key=url, defining_class=Link)

def __str__(self):
        if self.requires_python:
            rp = ' (requires-python:%s)' % self.requires_python
        else:
            rp = ''
        if self.comes_from:
            return '%s (from %s)%s' % (redact_auth_from_url(self._url),
                                       self.comes_from, rp)
        else:
            return redact_auth_from_url(str(self._url))

def __repr__(self):
        return '<Link %s>' % self

@property
    def url(self):
        # type: () -> str
        return self._url

@property
    def filename(self):
        # type: () -> str
        path = self.path.rstrip('/')
        name = posixpath.basename(path)
        if not name:
            # Make sure we don't leak auth information if the netloc
            # includes a username and password.
            netloc, user_pass = split_auth_from_netloc(self.netloc)
            return netloc

name = urllib_parse.unquote(name)
        assert name, ('URL %r produced no filename' % self._url)
        return name

@property
    def file_path(self):
        # type: () -> str
        return url_to_path(self.url)

@property
    def scheme(self):
        # type: () -> str
        return self._parsed_url.scheme

@property
    def netloc(self):
        # type: () -> str
        """
        This can contain auth information.
        """
        return self._parsed_url.netloc

@property
    def path(self):
        # type: () -> str
        return urllib_parse.unquote(self._parsed_url.path)

def splitext(self):
        # type: () -> Tuple[str, str]
        return splitext(posixpath.basename(self.path.rstrip('/')))

@property
    def ext(self):
        # type: () -> str
        return self.splitext()[1]

@property
    def url_without_fragment(self):
        # type: () -> str
        scheme, netloc, path, query, fragment = self._parsed_url
        return urllib_parse.urlunsplit((scheme, netloc, path, query, None))

_egg_fragment_re = re.compile(r'[#&]egg=([^&]*)')

@property
    def egg_fragment(self):
        # type: () -> Optional[str]
        match = self._egg_fragment_re.search(self._url)
        if not match:
            return None
        return match.group(1)

_subdirectory_fragment_re = re.compile(r'[#&]subdirectory=([^&]*)')

@property
    def subdirectory_fragment(self):
        # type: () -> Optional[str]
        match = self._subdirectory_fragment_re.search(self._url)
        if not match:
            return None
        return match.group(1)

_hash_re = re.compile(
        r'(sha1|sha224|sha384|sha256|sha512|md5)=([a-f0-9]+)'
    )

@property
    def hash(self):
        # type: () -> Optional[str]
        match = self._hash_re.search(self._url)
        if match:
            return match.group(2)
        return None

@property
    def hash_name(self):
        # type: () -> Optional[str]
        match = self._hash_re.search(self._url)
        if match:
            return match.group(1)
        return None

@property
    def show_url(self):
        # type: () -> Optional[str]
        return posixpath.basename(self._url.split('#', 1)[0].split('?', 1)[0])

@property
    def is_file(self):
        # type: () -> bool
        return self.scheme == 'file'

def is_existing_dir(self):
        # type: () -> bool
        return self.is_file and os.path.isdir(self.file_path)

@property
    def is_wheel(self):
        # type: () -> bool
        return self.ext == WHEEL_EXTENSION

@property
    def is_vcs(self):
        # type: () -> bool
        from pip._internal.vcs import vcs

return self.scheme in vcs.all_schemes

@property
    def is_yanked(self):
        # type: () -> bool
        return self.yanked_reason is not None

@property
    def has_hash(self):
        return self.hash_name is not None

def is_hash_allowed(self, hashes):
        # type: (Optional[Hashes]) -> bool
        """
        Return True if the link has a hash and it is allowed.
        """
        if hashes is None or not self.has_hash:
            return False
        # Assert non-None so mypy knows self.hash_name and self.hash are str.
        assert self.hash_name is not None
        assert self.hash is not None

return hashes.is_hash_allowed(self.hash_name, hex_digest=self.hash)

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