GitPython/git/refs/head.py at main · LinusSharp/GitPython · GitHub

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# This module is part of GitPython and is released under the

# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/

"""Some ref-based objects.

Note the distinction between the :class:`HEAD` and :class:`Head` classes.

"""

__all__ = ["HEAD", "Head"]

from git.config import GitConfigParser, SectionConstraint

from git.exc import GitCommandError

from git.util import join_path

from .reference import Reference

from .symbolic import SymbolicReference

# typing ---------------------------------------------------

from typing import Any, Sequence, TYPE_CHECKING, Union

from git.types import Commit_ish, PathLike

if TYPE_CHECKING:

from git.objects import Commit

from git.refs import RemoteReference

from git.repo import Repo

# -------------------------------------------------------------------

def strip_quotes(string: str) -> str:

if string.startswith('"') and string.endswith('"'):

return string[1:-1]

return string

class HEAD(SymbolicReference):

"""Special case of a :class:`~git.refs.symbolic.SymbolicReference` representing the

repository's HEAD reference."""

_HEAD_NAME = "HEAD"

_ORIG_HEAD_NAME = "ORIG_HEAD"

__slots__ = ()

# TODO: This can be removed once SymbolicReference.commit has static type hints.

commit: "Commit"

def __init__(self, repo: "Repo", path: PathLike = _HEAD_NAME) -> None:

if path != self._HEAD_NAME:

raise ValueError("HEAD instance must point to %r, got %r" % (self._HEAD_NAME, path))

super().__init__(repo, path)

def orig_head(self) -> SymbolicReference:

"""

:return:

:class:`~git.refs.symbolic.SymbolicReference` pointing at the ORIG_HEAD,

which is maintained to contain the previous value of HEAD.

"""

return SymbolicReference(self.repo, self._ORIG_HEAD_NAME)

def reset(

self,

commit: Union[Commit_ish, SymbolicReference, str] = "HEAD",

index: bool = True,

working_tree: bool = False,

paths: Union[PathLike, Sequence[PathLike], None] = None,

**kwargs: Any,

) -> "HEAD":

"""Reset our HEAD to the given commit optionally synchronizing the index and

working tree. The reference we refer to will be set to commit as well.

:param commit:

:class:`~git.objects.commit.Commit`, :class:`~git.refs.reference.Reference`,

or string identifying a revision we should reset HEAD to.

:param index:

If ``True``, the index will be set to match the given commit.

Otherwise it will not be touched.

:param working_tree:

If ``True``, the working tree will be forcefully adjusted to match the given

commit, possibly overwriting uncommitted changes without warning.

If `working_tree` is ``True``, `index` must be ``True`` as well.

:param paths:

Single path or list of paths relative to the git root directory

that are to be reset. This allows to partially reset individual files.

:param kwargs:

Additional arguments passed to :manpage:`git-reset(1)`.

:return:

self

"""

mode: Union[str, None]

mode = "--soft"

if index:

mode = "--mixed"

# Explicit "--mixed" when passing paths is deprecated since git 1.5.4.

# See https://github.com/gitpython-developers/GitPython/discussions/1876.

if paths:

mode = None

# END special case

# END handle index

if working_tree:

mode = "--hard"

if not index:

raise ValueError("Cannot reset the working tree if the index is not reset as well")

# END working tree handling

try:

self.repo.git.reset(mode, commit, "--", paths, **kwargs)

except GitCommandError as e:

# git nowadays may use 1 as status to indicate there are still unstaged

# modifications after the reset.

if e.status != 1:

raise

# END handle exception

return self

class Head(Reference):

"""A Head is a named reference to a :class:`~git.objects.commit.Commit`. Every Head

instance contains a name and a :class:`~git.objects.commit.Commit` object.

Examples::

>>> repo = Repo("/path/to/repo")

>>> head = repo.heads[0]

>>> head.name

'master'

>>> head.commit

<git.Commit "1c09f116cbc2cb4100fb6935bb162daa4723f455">

>>> head.commit.hexsha

'1c09f116cbc2cb4100fb6935bb162daa4723f455'

"""

_common_path_default = "refs/heads"

k_config_remote = "remote"

k_config_remote_ref = "merge" # Branch to merge from remote.

@classmethod

def delete(cls, repo: "Repo", *heads: "Union[Head, str]", force: bool = False, **kwargs: Any) -> None:

"""Delete the given heads.

:param force:

If ``True``, the heads will be deleted even if they are not yet merged into

the main development stream. Default ``False``.

"""

flag = "-d"

if force:

flag = "-D"

repo.git.branch(flag, *heads)

def set_tracking_branch(self, remote_reference: Union["RemoteReference", None]) -> "Head":

"""Configure this branch to track the given remote reference. This will

alter this branch's configuration accordingly.

:param remote_reference:

The remote reference to track or None to untrack any references.

:return:

self

"""

from .remote import RemoteReference

if remote_reference is not None and not isinstance(remote_reference, RemoteReference):

raise ValueError("Incorrect parameter type: %r" % remote_reference)

# END handle type

with self.config_writer() as writer:

if remote_reference is None:

writer.remove_option(self.k_config_remote)

writer.remove_option(self.k_config_remote_ref)

if len(writer.options()) == 0:

writer.remove_section()

else:

writer.set_value(self.k_config_remote, remote_reference.remote_name)

writer.set_value(

self.k_config_remote_ref,

Head.to_full_path(remote_reference.remote_head),

)

return self

def tracking_branch(self) -> Union["RemoteReference", None]:

"""

:return:

The remote reference we are tracking, or ``None`` if we are not a tracking

branch.

"""

from .remote import RemoteReference

reader = self.config_reader()

if reader.has_option(self.k_config_remote) and reader.has_option(self.k_config_remote_ref):

ref = Head(

self.repo,

Head.to_full_path(strip_quotes(reader.get_value(self.k_config_remote_ref))),

)

remote_refpath = RemoteReference.to_full_path(join_path(reader.get_value(self.k_config_remote), ref.name))

return RemoteReference(self.repo, remote_refpath)

# END handle have tracking branch

# We are not a tracking branch.

return None

def rename(self, new_path: PathLike, force: bool = False) -> "Head":

"""Rename self to a new path.

:param new_path:

Either a simple name or a path, e.g. ``new_name`` or ``features/new_name``.

The prefix ``refs/heads`` is implied.

:param force:

If ``True``, the rename will succeed even if a head with the target name

already exists.

:return:

self

:note:

Respects the ref log, as git commands are used.

"""

flag = "-m"

if force:

flag = "-M"

self.repo.git.branch(flag, self, new_path)

self.path = "%s/%s" % (self._common_path_default, new_path)

return self

def checkout(self, force: bool = False, **kwargs: Any) -> Union["HEAD", "Head"]:

"""Check out this head by setting the HEAD to this reference, by updating the

index to reflect the tree we point to and by updating the working tree to

reflect the latest index.

The command will fail if changed working tree files would be overwritten.

:param force:

If ``True``, changes to the index and the working tree will be discarded.

If ``False``, :exc:`~git.exc.GitCommandError` will be raised in that

situation.

:param kwargs:

Additional keyword arguments to be passed to git checkout, e.g.

``b="new_branch"`` to create a new branch at the given spot.

:return:

The active branch after the checkout operation, usually self unless a new

branch has been created.

If there is no active branch, as the HEAD is now detached, the HEAD

reference will be returned instead.

:note:

By default it is only allowed to checkout heads - everything else will leave

the HEAD detached which is allowed and possible, but remains a special state

that some tools might not be able to handle.

"""

kwargs["f"] = force

if kwargs["f"] is False:

kwargs.pop("f")

self.repo.git.checkout(self, **kwargs)

if self.repo.head.is_detached:

return self.repo.head

else:

return self.repo.active_branch

# { Configuration

def _config_parser(self, read_only: bool) -> SectionConstraint[GitConfigParser]:

if read_only:

parser = self.repo.config_reader()

else:

parser = self.repo.config_writer()

# END handle parser instance

return SectionConstraint(parser, 'branch "%s"' % self.name)

def config_reader(self) -> SectionConstraint[GitConfigParser]:

"""

:return:

A configuration parser instance constrained to only read this instance's

values.

"""

return self._config_parser(read_only=True)

def config_writer(self) -> SectionConstraint[GitConfigParser]:

"""

:return:

A configuration writer instance with read-and write access to options of

this head.

"""

return self._config_parser(read_only=False)

# } END configuration

GitPython/git/refs/head.py at main · LinusSharp/GitPython · GitHub

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