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import os

from git.util import join_path

from .head import Head

__all__ = ["RemoteReference"]

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

from typing import Any, Iterator, NoReturn, Union, TYPE_CHECKING

from git.types import PathLike

if TYPE_CHECKING:

from git.repo import Repo

from git import Remote

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

class RemoteReference(Head):

"""Represents a reference pointing to a remote head."""

_common_path_default = Head._remote_common_path_default

@classmethod

def iter_items(cls, repo: 'Repo', common_path: Union[PathLike, None] = None,

remote: Union['Remote', None] = None, *args: Any, **kwargs: Any

) -> Iterator['RemoteReference']:

"""Iterate remote references, and if given, constrain them to the given remote"""

common_path = common_path or cls._common_path_default

if remote is not None:

common_path = join_path(common_path, str(remote))

# END handle remote constraint

# super is Reference

return super(RemoteReference, cls).iter_items(repo, common_path)

@ classmethod

def delete(cls, repo: 'Repo', *refs: 'RemoteReference', **kwargs: Any) -> None:

"""Delete the given remote references

:note:

kwargs are given for comparability with the base class method as we

should not narrow the signature."""

repo.git.branch("-d", "-r", *refs)

# the official deletion method will ignore remote symbolic refs - these

# are generally ignored in the refs/ folder. We don't though

# and delete remainders manually

for ref in refs:

try:

os.remove(os.path.join(repo.common_dir, ref.path))

except OSError:

pass

try:

os.remove(os.path.join(repo.git_dir, ref.path))

except OSError:

pass

# END for each ref

@ classmethod

def create(cls, *args: Any, **kwargs: Any) -> NoReturn:

"""Used to disable this method"""

raise TypeError("Cannot explicitly create remote references")

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