527 lines
18 KiB
Python
527 lines
18 KiB
Python
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import logging
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import os.path
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import pathlib
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import re
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import urllib.parse
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import urllib.request
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from typing import List, Optional, Tuple
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from pip._internal.exceptions import BadCommand, InstallationError
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from pip._internal.utils.misc import HiddenText, display_path, hide_url
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from pip._internal.utils.subprocess import make_command
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from pip._internal.vcs.versioncontrol import (
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AuthInfo,
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RemoteNotFoundError,
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RemoteNotValidError,
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RevOptions,
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VersionControl,
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find_path_to_project_root_from_repo_root,
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vcs,
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)
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urlsplit = urllib.parse.urlsplit
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urlunsplit = urllib.parse.urlunsplit
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logger = logging.getLogger(__name__)
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GIT_VERSION_REGEX = re.compile(
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r"^git version " # Prefix.
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r"(\d+)" # Major.
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r"\.(\d+)" # Dot, minor.
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r"(?:\.(\d+))?" # Optional dot, patch.
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r".*$" # Suffix, including any pre- and post-release segments we don't care about.
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)
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HASH_REGEX = re.compile("^[a-fA-F0-9]{40}$")
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# SCP (Secure copy protocol) shorthand. e.g. 'git@example.com:foo/bar.git'
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SCP_REGEX = re.compile(
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r"""^
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# Optional user, e.g. 'git@'
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(\w+@)?
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# Server, e.g. 'github.com'.
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([^/:]+):
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# The server-side path. e.g. 'user/project.git'. Must start with an
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# alphanumeric character so as not to be confusable with a Windows paths
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# like 'C:/foo/bar' or 'C:\foo\bar'.
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(\w[^:]*)
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$""",
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re.VERBOSE,
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)
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def looks_like_hash(sha: str) -> bool:
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return bool(HASH_REGEX.match(sha))
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class Git(VersionControl):
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name = "git"
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dirname = ".git"
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repo_name = "clone"
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schemes = (
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"git+http",
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"git+https",
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"git+ssh",
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"git+git",
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"git+file",
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)
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# Prevent the user's environment variables from interfering with pip:
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# https://github.com/pypa/pip/issues/1130
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unset_environ = ("GIT_DIR", "GIT_WORK_TREE")
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default_arg_rev = "HEAD"
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@staticmethod
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def get_base_rev_args(rev: str) -> List[str]:
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return [rev]
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def is_immutable_rev_checkout(self, url: str, dest: str) -> bool:
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_, rev_options = self.get_url_rev_options(hide_url(url))
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if not rev_options.rev:
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return False
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if not self.is_commit_id_equal(dest, rev_options.rev):
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# the current commit is different from rev,
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# which means rev was something else than a commit hash
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return False
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# return False in the rare case rev is both a commit hash
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# and a tag or a branch; we don't want to cache in that case
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# because that branch/tag could point to something else in the future
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is_tag_or_branch = bool(self.get_revision_sha(dest, rev_options.rev)[0])
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return not is_tag_or_branch
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def get_git_version(self) -> Tuple[int, ...]:
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version = self.run_command(
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["version"],
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command_desc="git version",
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show_stdout=False,
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stdout_only=True,
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)
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match = GIT_VERSION_REGEX.match(version)
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if not match:
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logger.warning("Can't parse git version: %s", version)
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return ()
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return tuple(int(c) for c in match.groups())
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@classmethod
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def get_current_branch(cls, location: str) -> Optional[str]:
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"""
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Return the current branch, or None if HEAD isn't at a branch
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(e.g. detached HEAD).
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"""
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# git-symbolic-ref exits with empty stdout if "HEAD" is a detached
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# HEAD rather than a symbolic ref. In addition, the -q causes the
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# command to exit with status code 1 instead of 128 in this case
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# and to suppress the message to stderr.
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args = ["symbolic-ref", "-q", "HEAD"]
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output = cls.run_command(
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args,
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extra_ok_returncodes=(1,),
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show_stdout=False,
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stdout_only=True,
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cwd=location,
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)
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ref = output.strip()
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if ref.startswith("refs/heads/"):
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return ref[len("refs/heads/") :]
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return None
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@classmethod
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def get_revision_sha(cls, dest: str, rev: str) -> Tuple[Optional[str], bool]:
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"""
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Return (sha_or_none, is_branch), where sha_or_none is a commit hash
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if the revision names a remote branch or tag, otherwise None.
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Args:
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dest: the repository directory.
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rev: the revision name.
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"""
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# Pass rev to pre-filter the list.
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output = cls.run_command(
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["show-ref", rev],
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cwd=dest,
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show_stdout=False,
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stdout_only=True,
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on_returncode="ignore",
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)
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refs = {}
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# NOTE: We do not use splitlines here since that would split on other
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# unicode separators, which can be maliciously used to install a
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# different revision.
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for line in output.strip().split("\n"):
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line = line.rstrip("\r")
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if not line:
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continue
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try:
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ref_sha, ref_name = line.split(" ", maxsplit=2)
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except ValueError:
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# Include the offending line to simplify troubleshooting if
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# this error ever occurs.
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raise ValueError(f"unexpected show-ref line: {line!r}")
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refs[ref_name] = ref_sha
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branch_ref = f"refs/remotes/origin/{rev}"
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tag_ref = f"refs/tags/{rev}"
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sha = refs.get(branch_ref)
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if sha is not None:
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return (sha, True)
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sha = refs.get(tag_ref)
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return (sha, False)
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@classmethod
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def _should_fetch(cls, dest: str, rev: str) -> bool:
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"""
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Return true if rev is a ref or is a commit that we don't have locally.
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Branches and tags are not considered in this method because they are
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assumed to be always available locally (which is a normal outcome of
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``git clone`` and ``git fetch --tags``).
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"""
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if rev.startswith("refs/"):
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# Always fetch remote refs.
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return True
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if not looks_like_hash(rev):
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# Git fetch would fail with abbreviated commits.
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return False
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if cls.has_commit(dest, rev):
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# Don't fetch if we have the commit locally.
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return False
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return True
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@classmethod
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def resolve_revision(
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cls, dest: str, url: HiddenText, rev_options: RevOptions
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) -> RevOptions:
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"""
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Resolve a revision to a new RevOptions object with the SHA1 of the
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branch, tag, or ref if found.
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Args:
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rev_options: a RevOptions object.
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"""
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rev = rev_options.arg_rev
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# The arg_rev property's implementation for Git ensures that the
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# rev return value is always non-None.
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assert rev is not None
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sha, is_branch = cls.get_revision_sha(dest, rev)
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if sha is not None:
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rev_options = rev_options.make_new(sha)
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rev_options.branch_name = rev if is_branch else None
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return rev_options
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# Do not show a warning for the common case of something that has
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# the form of a Git commit hash.
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if not looks_like_hash(rev):
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logger.warning(
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"Did not find branch or tag '%s', assuming revision or ref.",
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rev,
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)
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if not cls._should_fetch(dest, rev):
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return rev_options
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# fetch the requested revision
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cls.run_command(
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make_command("fetch", "-q", url, rev_options.to_args()),
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cwd=dest,
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)
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# Change the revision to the SHA of the ref we fetched
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sha = cls.get_revision(dest, rev="FETCH_HEAD")
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rev_options = rev_options.make_new(sha)
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return rev_options
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@classmethod
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def is_commit_id_equal(cls, dest: str, name: Optional[str]) -> bool:
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"""
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Return whether the current commit hash equals the given name.
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Args:
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dest: the repository directory.
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name: a string name.
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"""
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if not name:
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# Then avoid an unnecessary subprocess call.
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return False
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return cls.get_revision(dest) == name
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def fetch_new(
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self, dest: str, url: HiddenText, rev_options: RevOptions, verbosity: int
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) -> None:
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rev_display = rev_options.to_display()
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logger.info("Cloning %s%s to %s", url, rev_display, display_path(dest))
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if verbosity <= 0:
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flags: Tuple[str, ...] = ("--quiet",)
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elif verbosity == 1:
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flags = ()
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else:
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flags = ("--verbose", "--progress")
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if self.get_git_version() >= (2, 17):
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# Git added support for partial clone in 2.17
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# https://git-scm.com/docs/partial-clone
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# Speeds up cloning by functioning without a complete copy of repository
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self.run_command(
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make_command(
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"clone",
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"--filter=blob:none",
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*flags,
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url,
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dest,
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)
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)
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else:
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self.run_command(make_command("clone", *flags, url, dest))
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if rev_options.rev:
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# Then a specific revision was requested.
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rev_options = self.resolve_revision(dest, url, rev_options)
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branch_name = getattr(rev_options, "branch_name", None)
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logger.debug("Rev options %s, branch_name %s", rev_options, branch_name)
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if branch_name is None:
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# Only do a checkout if the current commit id doesn't match
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# the requested revision.
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if not self.is_commit_id_equal(dest, rev_options.rev):
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cmd_args = make_command(
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"checkout",
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"-q",
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rev_options.to_args(),
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)
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self.run_command(cmd_args, cwd=dest)
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elif self.get_current_branch(dest) != branch_name:
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# Then a specific branch was requested, and that branch
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# is not yet checked out.
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track_branch = f"origin/{branch_name}"
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cmd_args = [
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"checkout",
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"-b",
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branch_name,
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"--track",
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track_branch,
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]
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self.run_command(cmd_args, cwd=dest)
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else:
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sha = self.get_revision(dest)
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rev_options = rev_options.make_new(sha)
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logger.info("Resolved %s to commit %s", url, rev_options.rev)
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#: repo may contain submodules
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self.update_submodules(dest)
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def switch(self, dest: str, url: HiddenText, rev_options: RevOptions) -> None:
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self.run_command(
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make_command("config", "remote.origin.url", url),
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cwd=dest,
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)
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cmd_args = make_command("checkout", "-q", rev_options.to_args())
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self.run_command(cmd_args, cwd=dest)
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self.update_submodules(dest)
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def update(self, dest: str, url: HiddenText, rev_options: RevOptions) -> None:
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# First fetch changes from the default remote
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if self.get_git_version() >= (1, 9):
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# fetch tags in addition to everything else
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self.run_command(["fetch", "-q", "--tags"], cwd=dest)
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else:
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self.run_command(["fetch", "-q"], cwd=dest)
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# Then reset to wanted revision (maybe even origin/master)
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rev_options = self.resolve_revision(dest, url, rev_options)
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cmd_args = make_command("reset", "--hard", "-q", rev_options.to_args())
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self.run_command(cmd_args, cwd=dest)
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#: update submodules
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self.update_submodules(dest)
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@classmethod
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def get_remote_url(cls, location: str) -> str:
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"""
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Return URL of the first remote encountered.
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Raises RemoteNotFoundError if the repository does not have a remote
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url configured.
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"""
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# We need to pass 1 for extra_ok_returncodes since the command
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# exits with return code 1 if there are no matching lines.
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stdout = cls.run_command(
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["config", "--get-regexp", r"remote\..*\.url"],
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extra_ok_returncodes=(1,),
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show_stdout=False,
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stdout_only=True,
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cwd=location,
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)
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remotes = stdout.splitlines()
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try:
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found_remote = remotes[0]
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except IndexError:
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raise RemoteNotFoundError
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for remote in remotes:
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if remote.startswith("remote.origin.url "):
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found_remote = remote
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break
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url = found_remote.split(" ")[1]
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return cls._git_remote_to_pip_url(url.strip())
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@staticmethod
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def _git_remote_to_pip_url(url: str) -> str:
|
||
|
|
"""
|
||
|
|
Convert a remote url from what git uses to what pip accepts.
|
||
|
|
|
||
|
|
There are 3 legal forms **url** may take:
|
||
|
|
|
||
|
|
1. A fully qualified url: ssh://git@example.com/foo/bar.git
|
||
|
|
2. A local project.git folder: /path/to/bare/repository.git
|
||
|
|
3. SCP shorthand for form 1: git@example.com:foo/bar.git
|
||
|
|
|
||
|
|
Form 1 is output as-is. Form 2 must be converted to URI and form 3 must
|
||
|
|
be converted to form 1.
|
||
|
|
|
||
|
|
See the corresponding test test_git_remote_url_to_pip() for examples of
|
||
|
|
sample inputs/outputs.
|
||
|
|
"""
|
||
|
|
if re.match(r"\w+://", url):
|
||
|
|
# This is already valid. Pass it though as-is.
|
||
|
|
return url
|
||
|
|
if os.path.exists(url):
|
||
|
|
# A local bare remote (git clone --mirror).
|
||
|
|
# Needs a file:// prefix.
|
||
|
|
return pathlib.PurePath(url).as_uri()
|
||
|
|
scp_match = SCP_REGEX.match(url)
|
||
|
|
if scp_match:
|
||
|
|
# Add an ssh:// prefix and replace the ':' with a '/'.
|
||
|
|
return scp_match.expand(r"ssh://\1\2/\3")
|
||
|
|
# Otherwise, bail out.
|
||
|
|
raise RemoteNotValidError(url)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def has_commit(cls, location: str, rev: str) -> bool:
|
||
|
|
"""
|
||
|
|
Check if rev is a commit that is available in the local repository.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
cls.run_command(
|
||
|
|
["rev-parse", "-q", "--verify", "sha^" + rev],
|
||
|
|
cwd=location,
|
||
|
|
log_failed_cmd=False,
|
||
|
|
)
|
||
|
|
except InstallationError:
|
||
|
|
return False
|
||
|
|
else:
|
||
|
|
return True
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def get_revision(cls, location: str, rev: Optional[str] = None) -> str:
|
||
|
|
if rev is None:
|
||
|
|
rev = "HEAD"
|
||
|
|
current_rev = cls.run_command(
|
||
|
|
["rev-parse", rev],
|
||
|
|
show_stdout=False,
|
||
|
|
stdout_only=True,
|
||
|
|
cwd=location,
|
||
|
|
)
|
||
|
|
return current_rev.strip()
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def get_subdirectory(cls, location: str) -> Optional[str]:
|
||
|
|
"""
|
||
|
|
Return the path to Python project root, relative to the repo root.
|
||
|
|
Return None if the project root is in the repo root.
|
||
|
|
"""
|
||
|
|
# find the repo root
|
||
|
|
git_dir = cls.run_command(
|
||
|
|
["rev-parse", "--git-dir"],
|
||
|
|
show_stdout=False,
|
||
|
|
stdout_only=True,
|
||
|
|
cwd=location,
|
||
|
|
).strip()
|
||
|
|
if not os.path.isabs(git_dir):
|
||
|
|
git_dir = os.path.join(location, git_dir)
|
||
|
|
repo_root = os.path.abspath(os.path.join(git_dir, ".."))
|
||
|
|
return find_path_to_project_root_from_repo_root(location, repo_root)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def get_url_rev_and_auth(cls, url: str) -> Tuple[str, Optional[str], AuthInfo]:
|
||
|
|
"""
|
||
|
|
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("/")
|
||
|
|
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().get_url_rev_and_auth(url)
|
||
|
|
url = url.replace("ssh://", "")
|
||
|
|
else:
|
||
|
|
url, rev, user_pass = super().get_url_rev_and_auth(url)
|
||
|
|
|
||
|
|
return url, rev, user_pass
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def update_submodules(cls, location: str) -> None:
|
||
|
|
if not os.path.exists(os.path.join(location, ".gitmodules")):
|
||
|
|
return
|
||
|
|
cls.run_command(
|
||
|
|
["submodule", "update", "--init", "--recursive", "-q"],
|
||
|
|
cwd=location,
|
||
|
|
)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def get_repository_root(cls, location: str) -> Optional[str]:
|
||
|
|
loc = super().get_repository_root(location)
|
||
|
|
if loc:
|
||
|
|
return loc
|
||
|
|
try:
|
||
|
|
r = cls.run_command(
|
||
|
|
["rev-parse", "--show-toplevel"],
|
||
|
|
cwd=location,
|
||
|
|
show_stdout=False,
|
||
|
|
stdout_only=True,
|
||
|
|
on_returncode="raise",
|
||
|
|
log_failed_cmd=False,
|
||
|
|
)
|
||
|
|
except BadCommand:
|
||
|
|
logger.debug(
|
||
|
|
"could not determine if %s is under git control "
|
||
|
|
"because git is not available",
|
||
|
|
location,
|
||
|
|
)
|
||
|
|
return None
|
||
|
|
except InstallationError:
|
||
|
|
return None
|
||
|
|
return os.path.normpath(r.rstrip("\r\n"))
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def should_add_vcs_url_prefix(repo_url: str) -> bool:
|
||
|
|
"""In either https or ssh form, requirements must be prefixed with git+."""
|
||
|
|
return True
|
||
|
|
|
||
|
|
|
||
|
|
vcs.register(Git)
|