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from .base import Submodule, UpdateProgress
from .util import find_first_remote_branch
from git.exc import InvalidGitRepositoryError
import git

import logging

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

from typing import TYPE_CHECKING, Union

from git.types import Commit_ish

if TYPE_CHECKING:
    from git.repo import Repo
    from git.util import IterableList

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

__all__ = ["RootModule", "RootUpdateProgress"]

log = logging.getLogger("git.objects.submodule.root")
log.addHandler(logging.NullHandler())

class RootUpdateProgress(UpdateProgress):
    """Utility class which adds more opcodes to the UpdateProgress"""

REMOVE, PATHCHANGE, BRANCHCHANGE, URLCHANGE = [
        1 << x for x in range(UpdateProgress._num_op_codes, UpdateProgress._num_op_codes + 4)
    ]
    _num_op_codes = UpdateProgress._num_op_codes + 4

__slots__ = ()

BEGIN = RootUpdateProgress.BEGIN
END = RootUpdateProgress.END
REMOVE = RootUpdateProgress.REMOVE
BRANCHCHANGE = RootUpdateProgress.BRANCHCHANGE
URLCHANGE = RootUpdateProgress.URLCHANGE
PATHCHANGE = RootUpdateProgress.PATHCHANGE

class RootModule(Submodule):

"""A (virtual) Root of all submodules in the given repository. It can be used
    to more easily traverse all submodules of the master repository"""

__slots__ = ()

k_root_name = "__ROOT__"

def __init__(self, repo: "Repo"):
        # repo, binsha, mode=None, path=None, name = None, parent_commit=None, url=None, ref=None)
        super(RootModule, self).__init__(
            repo,
            binsha=self.NULL_BIN_SHA,
            mode=self.k_default_mode,
            path="",
            name=self.k_root_name,
            parent_commit=repo.head.commit,
            url="",
            branch_path=git.Head.to_full_path(self.k_head_default),
        )

def _clear_cache(self) -> None:
        """May not do anything"""
        pass

# { Interface

def update(
        self,
        previous_commit: Union[Commit_ish, None] = None,  # type: ignore[override]
        recursive: bool = True,
        force_remove: bool = False,
        init: bool = True,
        to_latest_revision: bool = False,
        progress: Union[None, "RootUpdateProgress"] = None,
        dry_run: bool = False,
        force_reset: bool = False,
        keep_going: bool = False,
    ) -> "RootModule":
        """Update the submodules of this repository to the current HEAD commit.
        This method behaves smartly by determining changes of the path of a submodules
        repository, next to changes to the to-be-checked-out commit or the branch to be
        checked out. This works if the submodules ID does not change.
        Additionally it will detect addition and removal of submodules, which will be handled
        gracefully.

:param previous_commit: If set to a commit'ish, the commit we should use
            as the previous commit the HEAD pointed to before it was set to the commit it points to now.
            If None, it defaults to HEAD@{1} otherwise
        :param recursive: if True, the children of submodules will be updated as well
            using the same technique
        :param force_remove: If submodules have been deleted, they will be forcibly removed.
            Otherwise the update may fail if a submodule's repository cannot be deleted as
            changes have been made to it (see Submodule.update() for more information)
        :param init: If we encounter a new module which would need to be initialized, then do it.
        :param to_latest_revision: If True, instead of checking out the revision pointed to
            by this submodule's sha, the checked out tracking branch will be merged with the
            latest remote branch fetched from the repository's origin.
            Unless force_reset is specified, a local tracking branch will never be reset into its past, therefore
            the remote branch must be in the future for this to have an effect.
        :param force_reset: if True, submodules may checkout or reset their branch even if the repository has
            pending changes that would be overwritten, or if the local tracking branch is in the future of the
            remote tracking branch and would be reset into its past.
        :param progress: RootUpdateProgress instance or None if no progress should be sent
        :param dry_run: if True, operations will not actually be performed. Progress messages
            will change accordingly to indicate the WOULD DO state of the operation.
        :param keep_going: if True, we will ignore but log all errors, and keep going recursively.
            Unless dry_run is set as well, keep_going could cause subsequent/inherited errors you wouldn't see
            otherwise.
            In conjunction with dry_run, it can be useful to anticipate all errors when updating submodules
        :return: self"""
        if self.repo.bare:
            raise InvalidGitRepositoryError("Cannot update submodules in bare repositories")
        # END handle bare

if progress is None:
            progress = RootUpdateProgress()
        # END assure progress is set

prefix = ""
        if dry_run:
            prefix = "DRY-RUN: "

repo = self.repo

try:
            # SETUP BASE COMMIT
            ###################
            cur_commit = repo.head.commit
            if previous_commit is None:
                try:
                    previous_commit = repo.commit(repo.head.log_entry(-1).oldhexsha)
                    if previous_commit.binsha == previous_commit.NULL_BIN_SHA:
                        raise IndexError
                    # END handle initial commit
                except IndexError:
                    # in new repositories, there is no previous commit
                    previous_commit = cur_commit
                # END exception handling
            else:
                previous_commit = repo.commit(previous_commit)  # obtain commit object
            # END handle previous commit

psms: "IterableList[Submodule]" = self.list_items(repo, parent_commit=previous_commit)
            sms: "IterableList[Submodule]" = self.list_items(repo)
            spsms = set(psms)
            ssms = set(sms)

# HANDLE REMOVALS
            ###################
            rrsm = spsms - ssms
            len_rrsm = len(rrsm)

for i, rsm in enumerate(rrsm):
                op = REMOVE
                if i == 0:
                    op |= BEGIN
                # END handle begin

# fake it into thinking its at the current commit to allow deletion
                # of previous module. Trigger the cache to be updated before that
                progress.update(
                    op,
                    i,
                    len_rrsm,
                    prefix + "Removing submodule %r at %s" % (rsm.name, rsm.abspath),
                )
                rsm._parent_commit = repo.head.commit
                rsm.remove(
                    configuration=False,
                    module=True,
                    force=force_remove,
                    dry_run=dry_run,
                )

if i == len_rrsm - 1:
                    op |= END
                # END handle end
                progress.update(op, i, len_rrsm, prefix + "Done removing submodule %r" % rsm.name)
            # END for each removed submodule

# HANDLE PATH RENAMES
            #####################
            # url changes + branch changes
            csms = spsms & ssms
            len_csms = len(csms)
            for i, csm in enumerate(csms):
                psm: "Submodule" = psms[csm.name]
                sm: "Submodule" = sms[csm.name]

# PATH CHANGES
                ##############
                if sm.path != psm.path and psm.module_exists():
                    progress.update(
                        BEGIN | PATHCHANGE,
                        i,
                        len_csms,
                        prefix + "Moving repository of submodule %r from %s to %s" % (sm.name, psm.abspath, sm.abspath),
                    )
                    # move the module to the new path
                    if not dry_run:
                        psm.move(sm.path, module=True, configuration=False)
                    # END handle dry_run
                    progress.update(
                        END | PATHCHANGE,
                        i,
                        len_csms,
                        prefix + "Done moving repository of submodule %r" % sm.name,
                    )
                # END handle path changes

if sm.module_exists():
                    # HANDLE URL CHANGE
                    ###################
                    if sm.url != psm.url:
                        # Add the new remote, remove the old one
                        # This way, if the url just changes, the commits will not
                        # have to be re-retrieved
                        nn = "__new_origin__"
                        smm = sm.module()
                        rmts = smm.remotes

# don't do anything if we already have the url we search in place
                        if len([r for r in rmts if r.url == sm.url]) == 0:
                            progress.update(
                                BEGIN | URLCHANGE,
                                i,
                                len_csms,
                                prefix + "Changing url of submodule %r from %s to %s" % (sm.name, psm.url, sm.url),
                            )

if not dry_run:
                                assert nn not in [r.name for r in rmts]
                                smr = smm.create_remote(nn, sm.url)
                                smr.fetch(progress=progress)

# If we have a tracking branch, it should be available
                                # in the new remote as well.
                                if len([r for r in smr.refs if r.remote_head == sm.branch_name]) == 0:
                                    raise ValueError(
                                        "Submodule branch named %r was not available in new submodule remote at %r"
                                        % (sm.branch_name, sm.url)
                                    )
                                # END head is not detached

# now delete the changed one
                                rmt_for_deletion = None
                                for remote in rmts:
                                    if remote.url == psm.url:
                                        rmt_for_deletion = remote
                                        break
                                    # END if urls match
                                # END for each remote

# if we didn't find a matching remote, but have exactly one,
                                # we can safely use this one
                                if rmt_for_deletion is None:
                                    if len(rmts) == 1:
                                        rmt_for_deletion = rmts[0]
                                    else:
                                        # if we have not found any remote with the original url
                                        # we may not have a name. This is a special case,
                                        # and its okay to fail here
                                        # Alternatively we could just generate a unique name and leave all
                                        # existing ones in place
                                        raise InvalidGitRepositoryError(
                                            "Couldn't find original remote-repo at url %r" % psm.url
                                        )
                                    # END handle one single remote
                                # END handle check we found a remote

orig_name = rmt_for_deletion.name
                                smm.delete_remote(rmt_for_deletion)
                                # NOTE: Currently we leave tags from the deleted remotes
                                # as well as separate tracking branches in the possibly totally
                                # changed repository ( someone could have changed the url to
                                # another project ). At some point, one might want to clean
                                # it up, but the danger is high to remove stuff the user
                                # has added explicitly

# rename the new remote back to what it was
                                smr.rename(orig_name)

# early on, we verified that the our current tracking branch
                                # exists in the remote. Now we have to assure that the
                                # sha we point to is still contained in the new remote
                                # tracking branch.
                                smsha = sm.binsha
                                found = False
                                rref = smr.refs[self.branch_name]
                                for c in rref.commit.traverse():
                                    if c.binsha == smsha:
                                        found = True
                                        break
                                    # END traverse all commits in search for sha
                                # END for each commit

if not found:
                                    # adjust our internal binsha to use the one of the remote
                                    # this way, it will be checked out in the next step
                                    # This will change the submodule relative to us, so
                                    # the user will be able to commit the change easily
                                    log.warning(
                                        "Current sha %s was not contained in the tracking\
             branch at the new remote, setting it the the remote's tracking branch",
                                        sm.hexsha,
                                    )
                                    sm.binsha = rref.commit.binsha
                                # END reset binsha

# NOTE: All checkout is performed by the base implementation of update
                            # END handle dry_run
                            progress.update(
                                END | URLCHANGE,
                                i,
                                len_csms,
                                prefix + "Done adjusting url of submodule %r" % (sm.name),
                            )
                        # END skip remote handling if new url already exists in module
                    # END handle url

# HANDLE PATH CHANGES
                    #####################
                    if sm.branch_path != psm.branch_path:
                        # finally, create a new tracking branch which tracks the
                        # new remote branch
                        progress.update(
                            BEGIN | BRANCHCHANGE,
                            i,
                            len_csms,
                            prefix
                            + "Changing branch of submodule %r from %s to %s"
                            % (sm.name, psm.branch_path, sm.branch_path),
                        )
                        if not dry_run:
                            smm = sm.module()
                            smmr = smm.remotes
                            # As the branch might not exist yet, we will have to fetch all remotes to be sure ... .
                            for remote in smmr:
                                remote.fetch(progress=progress)
                            # end for each remote

try:
                                tbr = git.Head.create(
                                    smm,
                                    sm.branch_name,
                                    logmsg="branch: Created from HEAD",
                                )
                            except OSError:
                                # ... or reuse the existing one
                                tbr = git.Head(smm, sm.branch_path)
                            # END assure tracking branch exists

tbr.set_tracking_branch(find_first_remote_branch(smmr, sm.branch_name))
                            # NOTE: All head-resetting is done in the base implementation of update
                            # but we will have to checkout the new branch here. As it still points to the currently
                            # checkout out commit, we don't do any harm.
                            # As we don't want to update working-tree or index, changing the ref is all there is to do
                            smm.head.reference = tbr
                        # END handle dry_run

progress.update(
                            END | BRANCHCHANGE,
                            i,
                            len_csms,
                            prefix + "Done changing branch of submodule %r" % sm.name,
                        )
                    # END handle branch
                # END handle
            # END for each common submodule
        except Exception as err:
            if not keep_going:
                raise
            log.error(str(err))
        # end handle keep_going

# FINALLY UPDATE ALL ACTUAL SUBMODULES
        ######################################
        for sm in sms:
            # update the submodule using the default method
            sm.update(
                recursive=False,
                init=init,
                to_latest_revision=to_latest_revision,
                progress=progress,
                dry_run=dry_run,
                force=force_reset,
                keep_going=keep_going,
            )

# update recursively depth first - question is which inconsistent
            # state will be better in case it fails somewhere. Defective branch
            # or defective depth. The RootSubmodule type will never process itself,
            # which was done in the previous expression
            if recursive:
                # the module would exist by now if we are not in dry_run mode
                if sm.module_exists():
                    type(self)(sm.module()).update(
                        recursive=True,
                        force_remove=force_remove,
                        init=init,
                        to_latest_revision=to_latest_revision,
                        progress=progress,
                        dry_run=dry_run,
                        force_reset=force_reset,
                        keep_going=keep_going,
                    )
                # END handle dry_run
            # END handle recursive
        # END for each submodule to update

return self

def module(self) -> "Repo":
        """:return: the actual repository containing the submodules"""
        return self.repo

# } END interface

# } END classes

İptal

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📝 root.py

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