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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/

"""Provides a :class:`~git.refs.reference.Reference`-based type for lightweight tags.

This defines the :class:`TagReference` class (and its alias :class:`Tag`), which

represents lightweight tags. For annotated tags (which are git objects), see the

:mod:`git.objects.tag` module.

"""

__all__ = ["TagReference", "Tag"]

from .reference import Reference

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

from typing import Any, TYPE_CHECKING, Type, Union

from git.cmd import Git

from git.types import AnyGitObject, PathLike

if TYPE_CHECKING:

from git.objects import Commit, TagObject

from git.refs import SymbolicReference

from git.repo import Repo

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

class TagReference(Reference):

"""A lightweight tag reference which either points to a commit, a tag object or any

other object. In the latter case additional information, like the signature or the

tag-creator, is available.

This tag object will always point to a commit object, but may carry additional

information in a tag object::

tagref = TagReference.list_items(repo)[0]

print(tagref.commit.message)

if tagref.tag is not None:

print(tagref.tag.message)

"""

__slots__ = ()

unsafe_git_tag_options = ["--file", "-F"]

_common_default = "tags"

_common_path_default = Reference._common_path_default + "/" + _common_default

@property # type: ignore[misc]

def commit(self) -> "Commit": # LazyMixin has unrelated commit method

""":return: Commit object the tag ref points to

:raise ValueError:

If the tag points to a tree or blob.

"""

obj = self.object

while obj.type != "commit":

if obj.type == "tag":

# It is a tag object which carries the commit as an object - we can point to anything.

obj = obj.object

else:

raise ValueError(

(

"Cannot resolve commit as tag %s points to a %s object - "

+ "use the `.object` property instead to access it"

)

% (self, obj.type)

)

return obj

@property

def tag(self) -> Union["TagObject", None]:

"""

:return:

Tag object this tag ref points to, or ``None`` in case we are a lightweight

tag

"""

obj = self.object

if obj.type == "tag":

return obj

return None

# Make object read-only. It should be reasonably hard to adjust an existing tag.

@property # type: ignore[misc]

def object(self) -> AnyGitObject:

return Reference._get_object(self)

@classmethod

def create(

cls: Type["TagReference"],

repo: "Repo",

path: PathLike,

reference: Union[str, "SymbolicReference"] = "HEAD",

logmsg: Union[str, None] = None,

force: bool = False,

allow_unsafe_options: bool = False,

**kwargs: Any,

) -> "TagReference":

"""Create a new tag reference.

:param repo:

The :class:`~git.repo.base.Repo` to create the tag in.

:param path:

The name of the tag, e.g. ``1.0`` or ``releases/1.0``.

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

:param reference:

A reference to the :class:`~git.objects.base.Object` you want to tag.

The referenced object can be a commit, tree, or blob.

:param logmsg:

If not ``None``, the message will be used in your tag object. This will also

create an additional tag object that allows to obtain that information,

e.g.::

tagref.tag.message

:param message:

Synonym for the `logmsg` parameter. Included for backwards compatibility.

`logmsg` takes precedence if both are passed.

:param force:

If ``True``, force creation of a tag even though that tag already exists.

:param allow_unsafe_options:

Allow unsafe options, such as ``--file``.

:param kwargs:

Additional keyword arguments to be passed to :manpage:`git-tag(1)`.

:return:

A new :class:`TagReference`.

"""

legacy_ref = kwargs.pop("ref", None)

if legacy_ref:

reference = legacy_ref

if not allow_unsafe_options:

Git.check_unsafe_options(

options=Git._option_candidates([path, reference], kwargs),

unsafe_options=cls.unsafe_git_tag_options,

clusterable_short_options="46adefilnqsv",

)

if "message" in kwargs and kwargs["message"]:

kwargs["m"] = kwargs["message"]

del kwargs["message"]

if logmsg:

kwargs["m"] = logmsg

if force:

kwargs["f"] = True

args = (path, reference)

repo.git.tag(*args, **kwargs)

return TagReference(repo, "%s/%s" % (cls._common_path_default, path))

@classmethod

def delete(cls, repo: "Repo", *tags: "TagReference") -> None: # type: ignore[override]

"""Delete the given existing tag or tags."""

repo.git.tag("-d", *tags)

# Provide an alias.

Tag = TagReference

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