mirror of https://github.com/pypa/pip
635 lines
20 KiB
Python
635 lines
20 KiB
Python
"""Handles all VCS (version control) support"""
|
|
|
|
# The following comment should be removed at some point in the future.
|
|
# mypy: disallow-untyped-defs=False
|
|
|
|
from __future__ import absolute_import
|
|
|
|
import errno
|
|
import logging
|
|
import os
|
|
import shutil
|
|
import sys
|
|
|
|
from pip._vendor import pkg_resources
|
|
from pip._vendor.six.moves.urllib import parse as urllib_parse
|
|
|
|
from pip._internal.exceptions import BadCommand
|
|
from pip._internal.utils.misc import (
|
|
ask_path_exists,
|
|
backup_dir,
|
|
call_subprocess,
|
|
display_path,
|
|
hide_url,
|
|
hide_value,
|
|
make_command,
|
|
rmtree,
|
|
)
|
|
from pip._internal.utils.typing import MYPY_CHECK_RUNNING
|
|
from pip._internal.utils.urls import get_url_scheme
|
|
|
|
if MYPY_CHECK_RUNNING:
|
|
from typing import (
|
|
Any, Dict, Iterable, List, Mapping, Optional, Text, Tuple, Type, Union
|
|
)
|
|
from pip._internal.utils.ui import SpinnerInterface
|
|
from pip._internal.utils.misc import CommandArgs, HiddenText
|
|
|
|
AuthInfo = Tuple[Optional[str], Optional[str]]
|
|
|
|
|
|
__all__ = ['vcs']
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
def is_url(name):
|
|
# type: (Union[str, Text]) -> bool
|
|
"""
|
|
Return true if the name looks like a URL.
|
|
"""
|
|
scheme = get_url_scheme(name)
|
|
if scheme is None:
|
|
return False
|
|
return scheme in ['http', 'https', 'file', 'ftp'] + vcs.all_schemes
|
|
|
|
|
|
def make_vcs_requirement_url(repo_url, rev, project_name, subdir=None):
|
|
"""
|
|
Return the URL for a VCS requirement.
|
|
|
|
Args:
|
|
repo_url: the remote VCS url, with any needed VCS prefix (e.g. "git+").
|
|
project_name: the (unescaped) project name.
|
|
"""
|
|
egg_project_name = pkg_resources.to_filename(project_name)
|
|
req = '{}@{}#egg={}'.format(repo_url, rev, egg_project_name)
|
|
if subdir:
|
|
req += '&subdirectory={}'.format(subdir)
|
|
|
|
return req
|
|
|
|
|
|
class RemoteNotFoundError(Exception):
|
|
pass
|
|
|
|
|
|
class RevOptions(object):
|
|
|
|
"""
|
|
Encapsulates a VCS-specific revision to install, along with any VCS
|
|
install options.
|
|
|
|
Instances of this class should be treated as if immutable.
|
|
"""
|
|
|
|
def __init__(
|
|
self,
|
|
vc_class, # type: Type[VersionControl]
|
|
rev=None, # type: Optional[str]
|
|
extra_args=None, # type: Optional[CommandArgs]
|
|
):
|
|
# type: (...) -> None
|
|
"""
|
|
Args:
|
|
vc_class: a VersionControl subclass.
|
|
rev: the name of the revision to install.
|
|
extra_args: a list of extra options.
|
|
"""
|
|
if extra_args is None:
|
|
extra_args = []
|
|
|
|
self.extra_args = extra_args
|
|
self.rev = rev
|
|
self.vc_class = vc_class
|
|
self.branch_name = None # type: Optional[str]
|
|
|
|
def __repr__(self):
|
|
return '<RevOptions {}: rev={!r}>'.format(self.vc_class.name, self.rev)
|
|
|
|
@property
|
|
def arg_rev(self):
|
|
# type: () -> Optional[str]
|
|
if self.rev is None:
|
|
return self.vc_class.default_arg_rev
|
|
|
|
return self.rev
|
|
|
|
def to_args(self):
|
|
# type: () -> CommandArgs
|
|
"""
|
|
Return the VCS-specific command arguments.
|
|
"""
|
|
args = [] # type: CommandArgs
|
|
rev = self.arg_rev
|
|
if rev is not None:
|
|
args += self.vc_class.get_base_rev_args(rev)
|
|
args += self.extra_args
|
|
|
|
return args
|
|
|
|
def to_display(self):
|
|
# type: () -> str
|
|
if not self.rev:
|
|
return ''
|
|
|
|
return ' (to revision {})'.format(self.rev)
|
|
|
|
def make_new(self, rev):
|
|
# type: (str) -> RevOptions
|
|
"""
|
|
Make a copy of the current instance, but with a new rev.
|
|
|
|
Args:
|
|
rev: the name of the revision for the new object.
|
|
"""
|
|
return self.vc_class.make_rev_options(rev, extra_args=self.extra_args)
|
|
|
|
|
|
class VcsSupport(object):
|
|
_registry = {} # type: Dict[str, VersionControl]
|
|
schemes = ['ssh', 'git', 'hg', 'bzr', 'sftp', 'svn']
|
|
|
|
def __init__(self):
|
|
# type: () -> None
|
|
# Register more schemes with urlparse for various version control
|
|
# systems
|
|
urllib_parse.uses_netloc.extend(self.schemes)
|
|
# Python >= 2.7.4, 3.3 doesn't have uses_fragment
|
|
if getattr(urllib_parse, 'uses_fragment', None):
|
|
urllib_parse.uses_fragment.extend(self.schemes)
|
|
super(VcsSupport, self).__init__()
|
|
|
|
def __iter__(self):
|
|
return self._registry.__iter__()
|
|
|
|
@property
|
|
def backends(self):
|
|
# type: () -> List[VersionControl]
|
|
return list(self._registry.values())
|
|
|
|
@property
|
|
def dirnames(self):
|
|
# type: () -> List[str]
|
|
return [backend.dirname for backend in self.backends]
|
|
|
|
@property
|
|
def all_schemes(self):
|
|
# type: () -> List[str]
|
|
schemes = [] # type: List[str]
|
|
for backend in self.backends:
|
|
schemes.extend(backend.schemes)
|
|
return schemes
|
|
|
|
def register(self, cls):
|
|
# type: (Type[VersionControl]) -> None
|
|
if not hasattr(cls, 'name'):
|
|
logger.warning('Cannot register VCS %s', cls.__name__)
|
|
return
|
|
if cls.name not in self._registry:
|
|
self._registry[cls.name] = cls()
|
|
logger.debug('Registered VCS backend: %s', cls.name)
|
|
|
|
def unregister(self, name):
|
|
# type: (str) -> None
|
|
if name in self._registry:
|
|
del self._registry[name]
|
|
|
|
def get_backend_for_dir(self, location):
|
|
# type: (str) -> Optional[VersionControl]
|
|
"""
|
|
Return a VersionControl object if a repository of that type is found
|
|
at the given directory.
|
|
"""
|
|
for vcs_backend in self._registry.values():
|
|
if vcs_backend.controls_location(location):
|
|
logger.debug('Determine that %s uses VCS: %s',
|
|
location, vcs_backend.name)
|
|
return vcs_backend
|
|
return None
|
|
|
|
def get_backend(self, name):
|
|
# type: (str) -> Optional[VersionControl]
|
|
"""
|
|
Return a VersionControl object or None.
|
|
"""
|
|
name = name.lower()
|
|
return self._registry.get(name)
|
|
|
|
|
|
vcs = VcsSupport()
|
|
|
|
|
|
class VersionControl(object):
|
|
name = ''
|
|
dirname = ''
|
|
repo_name = ''
|
|
# List of supported schemes for this Version Control
|
|
schemes = () # type: Tuple[str, ...]
|
|
# Iterable of environment variable names to pass to call_subprocess().
|
|
unset_environ = () # type: Tuple[str, ...]
|
|
default_arg_rev = None # type: Optional[str]
|
|
|
|
@classmethod
|
|
def should_add_vcs_url_prefix(cls, remote_url):
|
|
"""
|
|
Return whether the vcs prefix (e.g. "git+") should be added to a
|
|
repository's remote url when used in a requirement.
|
|
"""
|
|
return not remote_url.lower().startswith('{}:'.format(cls.name))
|
|
|
|
@classmethod
|
|
def get_subdirectory(cls, repo_dir):
|
|
"""
|
|
Return the path to setup.py, relative to the repo root.
|
|
"""
|
|
return None
|
|
|
|
@classmethod
|
|
def get_requirement_revision(cls, repo_dir):
|
|
"""
|
|
Return the revision string that should be used in a requirement.
|
|
"""
|
|
return cls.get_revision(repo_dir)
|
|
|
|
@classmethod
|
|
def get_src_requirement(cls, repo_dir, project_name):
|
|
"""
|
|
Return the requirement string to use to redownload the files
|
|
currently at the given repository directory.
|
|
|
|
Args:
|
|
project_name: the (unescaped) project name.
|
|
|
|
The return value has a form similar to the following:
|
|
|
|
{repository_url}@{revision}#egg={project_name}
|
|
"""
|
|
repo_url = cls.get_remote_url(repo_dir)
|
|
if repo_url is None:
|
|
return None
|
|
|
|
if cls.should_add_vcs_url_prefix(repo_url):
|
|
repo_url = '{}+{}'.format(cls.name, repo_url)
|
|
|
|
revision = cls.get_requirement_revision(repo_dir)
|
|
subdir = cls.get_subdirectory(repo_dir)
|
|
req = make_vcs_requirement_url(repo_url, revision, project_name,
|
|
subdir=subdir)
|
|
|
|
return req
|
|
|
|
@staticmethod
|
|
def get_base_rev_args(rev):
|
|
"""
|
|
Return the base revision arguments for a vcs command.
|
|
|
|
Args:
|
|
rev: the name of a revision to install. Cannot be None.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@classmethod
|
|
def make_rev_options(cls, rev=None, extra_args=None):
|
|
# type: (Optional[str], Optional[CommandArgs]) -> RevOptions
|
|
"""
|
|
Return a RevOptions object.
|
|
|
|
Args:
|
|
rev: the name of a revision to install.
|
|
extra_args: a list of extra options.
|
|
"""
|
|
return RevOptions(cls, rev, extra_args=extra_args)
|
|
|
|
@classmethod
|
|
def _is_local_repository(cls, repo):
|
|
# type: (str) -> bool
|
|
"""
|
|
posix absolute paths start with os.path.sep,
|
|
win32 ones start with drive (like c:\\folder)
|
|
"""
|
|
drive, tail = os.path.splitdrive(repo)
|
|
return repo.startswith(os.path.sep) or bool(drive)
|
|
|
|
def export(self, location, url):
|
|
# type: (str, HiddenText) -> None
|
|
"""
|
|
Export the repository at the url to the destination location
|
|
i.e. only download the files, without vcs informations
|
|
|
|
:param url: the repository URL starting with a vcs prefix.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@classmethod
|
|
def get_netloc_and_auth(cls, netloc, scheme):
|
|
"""
|
|
Parse the repository URL's netloc, and return the new netloc to use
|
|
along with auth information.
|
|
|
|
Args:
|
|
netloc: the original repository URL netloc.
|
|
scheme: the repository URL's scheme without the vcs prefix.
|
|
|
|
This is mainly for the Subversion class to override, so that auth
|
|
information can be provided via the --username and --password options
|
|
instead of through the URL. For other subclasses like Git without
|
|
such an option, auth information must stay in the URL.
|
|
|
|
Returns: (netloc, (username, password)).
|
|
"""
|
|
return netloc, (None, None)
|
|
|
|
@classmethod
|
|
def get_url_rev_and_auth(cls, url):
|
|
# type: (str) -> Tuple[str, Optional[str], AuthInfo]
|
|
"""
|
|
Parse the repository URL to use, and return the URL, revision,
|
|
and auth info to use.
|
|
|
|
Returns: (url, rev, (username, password)).
|
|
"""
|
|
scheme, netloc, path, query, frag = urllib_parse.urlsplit(url)
|
|
if '+' not in scheme:
|
|
raise ValueError(
|
|
"Sorry, {!r} is a malformed VCS url. "
|
|
"The format is <vcs>+<protocol>://<url>, "
|
|
"e.g. svn+http://myrepo/svn/MyApp#egg=MyApp".format(url)
|
|
)
|
|
# Remove the vcs prefix.
|
|
scheme = scheme.split('+', 1)[1]
|
|
netloc, user_pass = cls.get_netloc_and_auth(netloc, scheme)
|
|
rev = None
|
|
if '@' in path:
|
|
path, rev = path.rsplit('@', 1)
|
|
url = urllib_parse.urlunsplit((scheme, netloc, path, query, ''))
|
|
return url, rev, user_pass
|
|
|
|
@staticmethod
|
|
def make_rev_args(username, password):
|
|
# type: (Optional[str], Optional[HiddenText]) -> CommandArgs
|
|
"""
|
|
Return the RevOptions "extra arguments" to use in obtain().
|
|
"""
|
|
return []
|
|
|
|
def get_url_rev_options(self, url):
|
|
# type: (HiddenText) -> Tuple[HiddenText, RevOptions]
|
|
"""
|
|
Return the URL and RevOptions object to use in obtain() and in
|
|
some cases export(), as a tuple (url, rev_options).
|
|
"""
|
|
secret_url, rev, user_pass = self.get_url_rev_and_auth(url.secret)
|
|
username, secret_password = user_pass
|
|
password = None # type: Optional[HiddenText]
|
|
if secret_password is not None:
|
|
password = hide_value(secret_password)
|
|
extra_args = self.make_rev_args(username, password)
|
|
rev_options = self.make_rev_options(rev, extra_args=extra_args)
|
|
|
|
return hide_url(secret_url), rev_options
|
|
|
|
@staticmethod
|
|
def normalize_url(url):
|
|
# type: (str) -> str
|
|
"""
|
|
Normalize a URL for comparison by unquoting it and removing any
|
|
trailing slash.
|
|
"""
|
|
return urllib_parse.unquote(url).rstrip('/')
|
|
|
|
@classmethod
|
|
def compare_urls(cls, url1, url2):
|
|
# type: (str, str) -> bool
|
|
"""
|
|
Compare two repo URLs for identity, ignoring incidental differences.
|
|
"""
|
|
return (cls.normalize_url(url1) == cls.normalize_url(url2))
|
|
|
|
def fetch_new(self, dest, url, rev_options):
|
|
# type: (str, HiddenText, RevOptions) -> None
|
|
"""
|
|
Fetch a revision from a repository, in the case that this is the
|
|
first fetch from the repository.
|
|
|
|
Args:
|
|
dest: the directory to fetch the repository to.
|
|
rev_options: a RevOptions object.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def switch(self, dest, url, rev_options):
|
|
# type: (str, HiddenText, RevOptions) -> None
|
|
"""
|
|
Switch the repo at ``dest`` to point to ``URL``.
|
|
|
|
Args:
|
|
rev_options: a RevOptions object.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def update(self, dest, url, rev_options):
|
|
# type: (str, HiddenText, RevOptions) -> None
|
|
"""
|
|
Update an already-existing repo to the given ``rev_options``.
|
|
|
|
Args:
|
|
rev_options: a RevOptions object.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@classmethod
|
|
def is_commit_id_equal(cls, dest, name):
|
|
"""
|
|
Return whether the id of the current commit equals the given name.
|
|
|
|
Args:
|
|
dest: the repository directory.
|
|
name: a string name.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
def obtain(self, dest, url):
|
|
# type: (str, HiddenText) -> None
|
|
"""
|
|
Install or update in editable mode the package represented by this
|
|
VersionControl object.
|
|
|
|
:param dest: the repository directory in which to install or update.
|
|
:param url: the repository URL starting with a vcs prefix.
|
|
"""
|
|
url, rev_options = self.get_url_rev_options(url)
|
|
|
|
if not os.path.exists(dest):
|
|
self.fetch_new(dest, url, rev_options)
|
|
return
|
|
|
|
rev_display = rev_options.to_display()
|
|
if self.is_repository_directory(dest):
|
|
existing_url = self.get_remote_url(dest)
|
|
if self.compare_urls(existing_url, url.secret):
|
|
logger.debug(
|
|
'%s in %s exists, and has correct URL (%s)',
|
|
self.repo_name.title(),
|
|
display_path(dest),
|
|
url,
|
|
)
|
|
if not self.is_commit_id_equal(dest, rev_options.rev):
|
|
logger.info(
|
|
'Updating %s %s%s',
|
|
display_path(dest),
|
|
self.repo_name,
|
|
rev_display,
|
|
)
|
|
self.update(dest, url, rev_options)
|
|
else:
|
|
logger.info('Skipping because already up-to-date.')
|
|
return
|
|
|
|
logger.warning(
|
|
'%s %s in %s exists with URL %s',
|
|
self.name,
|
|
self.repo_name,
|
|
display_path(dest),
|
|
existing_url,
|
|
)
|
|
prompt = ('(s)witch, (i)gnore, (w)ipe, (b)ackup ',
|
|
('s', 'i', 'w', 'b'))
|
|
else:
|
|
logger.warning(
|
|
'Directory %s already exists, and is not a %s %s.',
|
|
dest,
|
|
self.name,
|
|
self.repo_name,
|
|
)
|
|
# https://github.com/python/mypy/issues/1174
|
|
prompt = ('(i)gnore, (w)ipe, (b)ackup ', # type: ignore
|
|
('i', 'w', 'b'))
|
|
|
|
logger.warning(
|
|
'The plan is to install the %s repository %s',
|
|
self.name,
|
|
url,
|
|
)
|
|
response = ask_path_exists('What to do? %s' % prompt[0], prompt[1])
|
|
|
|
if response == 'a':
|
|
sys.exit(-1)
|
|
|
|
if response == 'w':
|
|
logger.warning('Deleting %s', display_path(dest))
|
|
rmtree(dest)
|
|
self.fetch_new(dest, url, rev_options)
|
|
return
|
|
|
|
if response == 'b':
|
|
dest_dir = backup_dir(dest)
|
|
logger.warning(
|
|
'Backing up %s to %s', display_path(dest), dest_dir,
|
|
)
|
|
shutil.move(dest, dest_dir)
|
|
self.fetch_new(dest, url, rev_options)
|
|
return
|
|
|
|
# Do nothing if the response is "i".
|
|
if response == 's':
|
|
logger.info(
|
|
'Switching %s %s to %s%s',
|
|
self.repo_name,
|
|
display_path(dest),
|
|
url,
|
|
rev_display,
|
|
)
|
|
self.switch(dest, url, rev_options)
|
|
|
|
def unpack(self, location, url):
|
|
# type: (str, HiddenText) -> None
|
|
"""
|
|
Clean up current location and download the url repository
|
|
(and vcs infos) into location
|
|
|
|
:param url: the repository URL starting with a vcs prefix.
|
|
"""
|
|
if os.path.exists(location):
|
|
rmtree(location)
|
|
self.obtain(location, url=url)
|
|
|
|
@classmethod
|
|
def get_remote_url(cls, location):
|
|
"""
|
|
Return the url used at location
|
|
|
|
Raises RemoteNotFoundError if the repository does not have a remote
|
|
url configured.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@classmethod
|
|
def get_revision(cls, location):
|
|
"""
|
|
Return the current commit id of the files at the given location.
|
|
"""
|
|
raise NotImplementedError
|
|
|
|
@classmethod
|
|
def run_command(
|
|
cls,
|
|
cmd, # type: Union[List[str], CommandArgs]
|
|
show_stdout=True, # type: bool
|
|
cwd=None, # type: Optional[str]
|
|
on_returncode='raise', # type: str
|
|
extra_ok_returncodes=None, # type: Optional[Iterable[int]]
|
|
command_desc=None, # type: Optional[str]
|
|
extra_environ=None, # type: Optional[Mapping[str, Any]]
|
|
spinner=None # type: Optional[SpinnerInterface]
|
|
):
|
|
# type: (...) -> Text
|
|
"""
|
|
Run a VCS subcommand
|
|
This is simply a wrapper around call_subprocess that adds the VCS
|
|
command name, and checks that the VCS is available
|
|
"""
|
|
cmd = make_command(cls.name, *cmd)
|
|
try:
|
|
return call_subprocess(cmd, show_stdout, cwd,
|
|
on_returncode=on_returncode,
|
|
extra_ok_returncodes=extra_ok_returncodes,
|
|
command_desc=command_desc,
|
|
extra_environ=extra_environ,
|
|
unset_environ=cls.unset_environ,
|
|
spinner=spinner)
|
|
except OSError as e:
|
|
# errno.ENOENT = no such file or directory
|
|
# In other words, the VCS executable isn't available
|
|
if e.errno == errno.ENOENT:
|
|
raise BadCommand(
|
|
'Cannot find command %r - do you have '
|
|
'%r installed and in your '
|
|
'PATH?' % (cls.name, cls.name))
|
|
else:
|
|
raise # re-raise exception if a different error occurred
|
|
|
|
@classmethod
|
|
def is_repository_directory(cls, path):
|
|
# type: (str) -> bool
|
|
"""
|
|
Return whether a directory path is a repository directory.
|
|
"""
|
|
logger.debug('Checking in %s for %s (%s)...',
|
|
path, cls.dirname, cls.name)
|
|
return os.path.exists(os.path.join(path, cls.dirname))
|
|
|
|
@classmethod
|
|
def controls_location(cls, location):
|
|
# type: (str) -> bool
|
|
"""
|
|
Check if a location is controlled by the vcs.
|
|
It is meant to be overridden to implement smarter detection
|
|
mechanisms for specific vcs.
|
|
|
|
This can do more than is_repository_directory() alone. For example,
|
|
the Git override checks that Git is actually available.
|
|
"""
|
|
return cls.is_repository_directory(location)
|