| from __future__ import absolute_import |
| |
| import logging |
| import os.path |
| import re |
| |
| from pip._vendor.packaging.version import parse as parse_version |
| from pip._vendor.six.moves.urllib import parse as urllib_parse |
| from pip._vendor.six.moves.urllib import request as urllib_request |
| |
| from pip._internal.exceptions import BadCommand |
| from pip._internal.utils.compat import samefile |
| from pip._internal.utils.misc import display_path, redact_password_from_url |
| from pip._internal.utils.temp_dir import TempDirectory |
| from pip._internal.vcs.versioncontrol import ( |
| RemoteNotFoundError, VersionControl, vcs, |
| ) |
| |
| urlsplit = urllib_parse.urlsplit |
| urlunsplit = urllib_parse.urlunsplit |
| |
| |
| logger = logging.getLogger(__name__) |
| |
| |
| HASH_REGEX = re.compile('^[a-fA-F0-9]{40}$') |
| |
| |
| def looks_like_hash(sha): |
| return bool(HASH_REGEX.match(sha)) |
| |
| |
| class Git(VersionControl): |
| name = 'git' |
| dirname = '.git' |
| repo_name = 'clone' |
| schemes = ( |
| 'git', 'git+http', 'git+https', 'git+ssh', 'git+git', 'git+file', |
| ) |
| # Prevent the user's environment variables from interfering with pip: |
| # https://github.com/pypa/pip/issues/1130 |
| unset_environ = ('GIT_DIR', 'GIT_WORK_TREE') |
| default_arg_rev = 'HEAD' |
| |
| @staticmethod |
| def get_base_rev_args(rev): |
| return [rev] |
| |
| def get_git_version(self): |
| VERSION_PFX = 'git version ' |
| version = self.run_command(['version'], show_stdout=False) |
| if version.startswith(VERSION_PFX): |
| version = version[len(VERSION_PFX):].split()[0] |
| else: |
| version = '' |
| # get first 3 positions of the git version because |
| # on windows it is x.y.z.windows.t, and this parses as |
| # LegacyVersion which always smaller than a Version. |
| version = '.'.join(version.split('.')[:3]) |
| return parse_version(version) |
| |
| @classmethod |
| def get_current_branch(cls, location): |
| """ |
| Return the current branch, or None if HEAD isn't at a branch |
| (e.g. detached HEAD). |
| """ |
| # git-symbolic-ref exits with empty stdout if "HEAD" is a detached |
| # HEAD rather than a symbolic ref. In addition, the -q causes the |
| # command to exit with status code 1 instead of 128 in this case |
| # and to suppress the message to stderr. |
| args = ['symbolic-ref', '-q', 'HEAD'] |
| output = cls.run_command( |
| args, extra_ok_returncodes=(1, ), show_stdout=False, cwd=location, |
| ) |
| ref = output.strip() |
| |
| if ref.startswith('refs/heads/'): |
| return ref[len('refs/heads/'):] |
| |
| return None |
| |
| def export(self, location, url): |
| """Export the Git repository at the url to the destination location""" |
| if not location.endswith('/'): |
| location = location + '/' |
| |
| with TempDirectory(kind="export") as temp_dir: |
| self.unpack(temp_dir.path, url=url) |
| self.run_command( |
| ['checkout-index', '-a', '-f', '--prefix', location], |
| show_stdout=False, cwd=temp_dir.path |
| ) |
| |
| @classmethod |
| def get_revision_sha(cls, dest, rev): |
| """ |
| Return (sha_or_none, is_branch), where sha_or_none is a commit hash |
| if the revision names a remote branch or tag, otherwise None. |
| |
| Args: |
| dest: the repository directory. |
| rev: the revision name. |
| """ |
| # Pass rev to pre-filter the list. |
| output = cls.run_command(['show-ref', rev], cwd=dest, |
| show_stdout=False, on_returncode='ignore') |
| refs = {} |
| for line in output.strip().splitlines(): |
| try: |
| sha, ref = line.split() |
| except ValueError: |
| # Include the offending line to simplify troubleshooting if |
| # this error ever occurs. |
| raise ValueError('unexpected show-ref line: {!r}'.format(line)) |
| |
| refs[ref] = sha |
| |
| branch_ref = 'refs/remotes/origin/{}'.format(rev) |
| tag_ref = 'refs/tags/{}'.format(rev) |
| |
| sha = refs.get(branch_ref) |
| if sha is not None: |
| return (sha, True) |
| |
| sha = refs.get(tag_ref) |
| |
| return (sha, False) |
| |
| @classmethod |
| def resolve_revision(cls, dest, url, rev_options): |
| """ |
| Resolve a revision to a new RevOptions object with the SHA1 of the |
| branch, tag, or ref if found. |
| |
| Args: |
| rev_options: a RevOptions object. |
| """ |
| rev = rev_options.arg_rev |
| sha, is_branch = cls.get_revision_sha(dest, rev) |
| |
| if sha is not None: |
| rev_options = rev_options.make_new(sha) |
| rev_options.branch_name = rev if is_branch else None |
| |
| return rev_options |
| |
| # Do not show a warning for the common case of something that has |
| # the form of a Git commit hash. |
| if not looks_like_hash(rev): |
| logger.warning( |
| "Did not find branch or tag '%s', assuming revision or ref.", |
| rev, |
| ) |
| |
| if not rev.startswith('refs/'): |
| return rev_options |
| |
| # If it looks like a ref, we have to fetch it explicitly. |
| cls.run_command( |
| ['fetch', '-q', url] + rev_options.to_args(), |
| cwd=dest, |
| ) |
| # Change the revision to the SHA of the ref we fetched |
| sha = cls.get_revision(dest, rev='FETCH_HEAD') |
| rev_options = rev_options.make_new(sha) |
| |
| return rev_options |
| |
| @classmethod |
| def is_commit_id_equal(cls, dest, name): |
| """ |
| Return whether the current commit hash equals the given name. |
| |
| Args: |
| dest: the repository directory. |
| name: a string name. |
| """ |
| if not name: |
| # Then avoid an unnecessary subprocess call. |
| return False |
| |
| return cls.get_revision(dest) == name |
| |
| def fetch_new(self, dest, url, rev_options): |
| rev_display = rev_options.to_display() |
| logger.info( |
| 'Cloning %s%s to %s', redact_password_from_url(url), |
| rev_display, display_path(dest), |
| ) |
| self.run_command(['clone', '-q', url, dest]) |
| |
| if rev_options.rev: |
| # Then a specific revision was requested. |
| rev_options = self.resolve_revision(dest, url, rev_options) |
| branch_name = getattr(rev_options, 'branch_name', None) |
| if branch_name is None: |
| # Only do a checkout if the current commit id doesn't match |
| # the requested revision. |
| if not self.is_commit_id_equal(dest, rev_options.rev): |
| cmd_args = ['checkout', '-q'] + rev_options.to_args() |
| self.run_command(cmd_args, cwd=dest) |
| elif self.get_current_branch(dest) != branch_name: |
| # Then a specific branch was requested, and that branch |
| # is not yet checked out. |
| track_branch = 'origin/{}'.format(branch_name) |
| cmd_args = [ |
| 'checkout', '-b', branch_name, '--track', track_branch, |
| ] |
| self.run_command(cmd_args, cwd=dest) |
| |
| #: repo may contain submodules |
| self.update_submodules(dest) |
| |
| def switch(self, dest, url, rev_options): |
| self.run_command(['config', 'remote.origin.url', url], cwd=dest) |
| cmd_args = ['checkout', '-q'] + rev_options.to_args() |
| self.run_command(cmd_args, cwd=dest) |
| |
| self.update_submodules(dest) |
| |
| def update(self, dest, url, rev_options): |
| # First fetch changes from the default remote |
| if self.get_git_version() >= parse_version('1.9.0'): |
| # fetch tags in addition to everything else |
| self.run_command(['fetch', '-q', '--tags'], cwd=dest) |
| else: |
| self.run_command(['fetch', '-q'], cwd=dest) |
| # Then reset to wanted revision (maybe even origin/master) |
| rev_options = self.resolve_revision(dest, url, rev_options) |
| cmd_args = ['reset', '--hard', '-q'] + rev_options.to_args() |
| self.run_command(cmd_args, cwd=dest) |
| #: update submodules |
| self.update_submodules(dest) |
| |
| @classmethod |
| def get_remote_url(cls, location): |
| """ |
| Return URL of the first remote encountered. |
| |
| Raises RemoteNotFoundError if the repository does not have a remote |
| url configured. |
| """ |
| # We need to pass 1 for extra_ok_returncodes since the command |
| # exits with return code 1 if there are no matching lines. |
| stdout = cls.run_command( |
| ['config', '--get-regexp', r'remote\..*\.url'], |
| extra_ok_returncodes=(1, ), show_stdout=False, cwd=location, |
| ) |
| remotes = stdout.splitlines() |
| try: |
| found_remote = remotes[0] |
| except IndexError: |
| raise RemoteNotFoundError |
| |
| for remote in remotes: |
| if remote.startswith('remote.origin.url '): |
| found_remote = remote |
| break |
| url = found_remote.split(' ')[1] |
| return url.strip() |
| |
| @classmethod |
| def get_revision(cls, location, rev=None): |
| if rev is None: |
| rev = 'HEAD' |
| current_rev = cls.run_command( |
| ['rev-parse', rev], show_stdout=False, cwd=location, |
| ) |
| return current_rev.strip() |
| |
| @classmethod |
| def get_subdirectory(cls, location): |
| # find the repo root |
| git_dir = cls.run_command(['rev-parse', '--git-dir'], |
| show_stdout=False, cwd=location).strip() |
| if not os.path.isabs(git_dir): |
| git_dir = os.path.join(location, git_dir) |
| root_dir = os.path.join(git_dir, '..') |
| # find setup.py |
| orig_location = location |
| while not os.path.exists(os.path.join(location, 'setup.py')): |
| last_location = location |
| location = os.path.dirname(location) |
| if location == last_location: |
| # We've traversed up to the root of the filesystem without |
| # finding setup.py |
| logger.warning( |
| "Could not find setup.py for directory %s (tried all " |
| "parent directories)", |
| orig_location, |
| ) |
| return None |
| # relative path of setup.py to repo root |
| if samefile(root_dir, location): |
| return None |
| return os.path.relpath(location, root_dir) |
| |
| @classmethod |
| def get_url_rev_and_auth(cls, url): |
| """ |
| Prefixes stub URLs like 'user@hostname:user/repo.git' with 'ssh://'. |
| That's required because although they use SSH they sometimes don't |
| work with a ssh:// scheme (e.g. GitHub). But we need a scheme for |
| parsing. Hence we remove it again afterwards and return it as a stub. |
| """ |
| # Works around an apparent Git bug |
| # (see https://article.gmane.org/gmane.comp.version-control.git/146500) |
| scheme, netloc, path, query, fragment = urlsplit(url) |
| if scheme.endswith('file'): |
| initial_slashes = path[:-len(path.lstrip('/'))] |
| newpath = ( |
| initial_slashes + |
| urllib_request.url2pathname(path) |
| .replace('\\', '/').lstrip('/') |
| ) |
| url = urlunsplit((scheme, netloc, newpath, query, fragment)) |
| after_plus = scheme.find('+') + 1 |
| url = scheme[:after_plus] + urlunsplit( |
| (scheme[after_plus:], netloc, newpath, query, fragment), |
| ) |
| |
| if '://' not in url: |
| assert 'file:' not in url |
| url = url.replace('git+', 'git+ssh://') |
| url, rev, user_pass = super(Git, cls).get_url_rev_and_auth(url) |
| url = url.replace('ssh://', '') |
| else: |
| url, rev, user_pass = super(Git, cls).get_url_rev_and_auth(url) |
| |
| return url, rev, user_pass |
| |
| @classmethod |
| def update_submodules(cls, location): |
| if not os.path.exists(os.path.join(location, '.gitmodules')): |
| return |
| cls.run_command( |
| ['submodule', 'update', '--init', '--recursive', '-q'], |
| cwd=location, |
| ) |
| |
| @classmethod |
| def controls_location(cls, location): |
| if super(Git, cls).controls_location(location): |
| return True |
| try: |
| r = cls.run_command(['rev-parse'], |
| cwd=location, |
| show_stdout=False, |
| on_returncode='ignore') |
| return not r |
| except BadCommand: |
| logger.debug("could not determine if %s is under git control " |
| "because git is not available", location) |
| return False |
| |
| |
| vcs.register(Git) |