GitPython/git/objects/submodule/base.py at master · githubdelegate/GitPython · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

991

992

993

994

995

996

997

998

999

1000

from . import util

from .util import (

mkhead,

sm_name,

sm_section,

SubmoduleConfigParser,

find_first_remote_branch

)

from git.objects.util import Traversable

from io import BytesIO # need a dict to set bloody .name field

from git.util import (

Iterable,

join_path_native,

to_native_path_linux,

RemoteProgress,

rmtree,

unbare_repo

)

from git.config import (

SectionConstraint,

GitConfigParser,

)

from git.exc import (

InvalidGitRepositoryError,

NoSuchPathError,

RepositoryDirtyError

)

from git.compat import (

string_types,

defenc

)

import stat

import git

import os

import logging

import uuid

__all__ = ["Submodule", "UpdateProgress"]

log = logging.getLogger('git.objects.submodule.base')

class UpdateProgress(RemoteProgress):

"""Class providing detailed progress information to the caller who should

derive from it and implement the ``update(...)`` message"""

CLONE, FETCH, UPDWKTREE = [1 << x for x in range(RemoteProgress._num_op_codes, RemoteProgress._num_op_codes + 3)]

_num_op_codes = RemoteProgress._num_op_codes + 3

__slots__ = tuple()

BEGIN = UpdateProgress.BEGIN

END = UpdateProgress.END

CLONE = UpdateProgress.CLONE

FETCH = UpdateProgress.FETCH

UPDWKTREE = UpdateProgress.UPDWKTREE

# IndexObject comes via util module, its a 'hacky' fix thanks to pythons import

# mechanism which cause plenty of trouble of the only reason for packages and

# modules is refactoring - subpackages shoudn't depend on parent packages

class Submodule(util.IndexObject, Iterable, Traversable):

"""Implements access to a git submodule. They are special in that their sha

represents a commit in the submodule's repository which is to be checked out

at the path of this instance.

The submodule type does not have a string type associated with it, as it exists

solely as a marker in the tree and index.

All methods work in bare and non-bare repositories."""

_id_attribute_ = "name"

k_modules_file = '.gitmodules'

k_head_option = 'branch'

k_head_default = 'master'

k_default_mode = stat.S_IFDIR | stat.S_IFLNK # submodules are directories with link-status

# this is a bogus type for base class compatability

type = 'submodule'

__slots__ = ('_parent_commit', '_url', '_branch_path', '_name', '__weakref__')

_cache_attrs = ('path', '_url', '_branch_path')

def __init__(self, repo, binsha, mode=None, path=None, name=None, parent_commit=None, url=None, branch_path=None):

"""Initialize this instance with its attributes. We only document the ones

that differ from ``IndexObject``

:param repo: Our parent repository

:param binsha: binary sha referring to a commit in the remote repository, see url parameter

:param parent_commit: see set_parent_commit()

:param url: The url to the remote repository which is the submodule

:param branch_path: full (relative) path to ref to checkout when cloning the remote repository"""

super(Submodule, self).__init__(repo, binsha, mode, path)

self.size = 0

self._parent_commit = parent_commit

if url is not None:

self._url = url

if branch_path is not None:

assert isinstance(branch_path, string_types)

self._branch_path = branch_path

if name is not None:

self._name = name

def _set_cache_(self, attr):

if attr in ('path', '_url', '_branch_path'):

reader = self.config_reader()

# default submodule values

try:

self.path = reader.get_value('path')

except cp.NoSectionError:

raise ValueError("This submodule instance does not exist anymore in '%s' file"

% os.path.join(self.repo.working_tree_dir, '.gitmodules'))

# end

self._url = reader.get_value('url')

# git-python extension values - optional

self._branch_path = reader.get_value(self.k_head_option, git.Head.to_full_path(self.k_head_default))

elif attr == '_name':

raise AttributeError("Cannot retrieve the name of a submodule if it was not set initially")

else:

super(Submodule, self)._set_cache_(attr)

# END handle attribute name

def _get_intermediate_items(self, item):

""":return: all the submodules of our module repository"""

try:

return type(self).list_items(item.module())

except InvalidGitRepositoryError:

return list()

# END handle intermeditate items

@classmethod

def _need_gitfile_submodules(cls, git):

return git.version_info[:3] >= (1, 7, 0)

def __eq__(self, other):

"""Compare with another submodule"""

# we may only compare by name as this should be the ID they are hashed with

# Otherwise this type wouldn't be hashable

# return self.path == other.path and self.url == other.url and super(Submodule, self).__eq__(other)

return self._name == other._name

def __ne__(self, other):

"""Compare with another submodule for inequality"""

return not (self == other)

def __hash__(self):

"""Hash this instance using its logical id, not the sha"""

return hash(self._name)

def __str__(self):

return self._name

def __repr__(self):

return "git.%s(name=%s, path=%s, url=%s, branch_path=%s)"\

% (type(self).__name__, self._name, self.path, self.url, self.branch_path)

@classmethod

def _config_parser(cls, repo, parent_commit, read_only):

""":return: Config Parser constrained to our submodule in read or write mode

:raise IOError: If the .gitmodules file cannot be found, either locally or in the repository

at the given parent commit. Otherwise the exception would be delayed until the first

access of the config parser"""

parent_matches_head = True

if parent_commit is not None:

try:

parent_matches_head = repo.head.commit == parent_commit

except ValueError:

# We are most likely in an empty repository, so the HEAD doesn't point to a valid ref

pass

# end hanlde parent_commit

if not repo.bare and parent_matches_head:

fp_module = os.path.join(repo.working_tree_dir, cls.k_modules_file)

else:

assert parent_commit is not None, "need valid parent_commit in bare repositories"

try:

fp_module = cls._sio_modules(parent_commit)

except KeyError:

raise IOError("Could not find %s file in the tree of parent commit %s" %

(cls.k_modules_file, parent_commit))

# END handle exceptions

# END handle non-bare working tree

if not read_only and (repo.bare or not parent_matches_head):

raise ValueError("Cannot write blobs of 'historical' submodule configurations")

# END handle writes of historical submodules

return SubmoduleConfigParser(fp_module, read_only=read_only)

def _clear_cache(self):

# clear the possibly changed values

for name in self._cache_attrs:

try:

delattr(self, name)

except AttributeError:

pass

# END try attr deletion

# END for each name to delete

@classmethod

def _sio_modules(cls, parent_commit):

""":return: Configuration file as BytesIO - we only access it through the respective blob's data"""

sio = BytesIO(parent_commit.tree[cls.k_modules_file].data_stream.read())

sio.name = cls.k_modules_file

return sio

def _config_parser_constrained(self, read_only):

""":return: Config Parser constrained to our submodule in read or write mode"""

try:

pc = self.parent_commit

except ValueError:

pc = None

# end hande empty parent repository

parser = self._config_parser(self.repo, pc, read_only)

parser.set_submodule(self)

return SectionConstraint(parser, sm_section(self.name))

@classmethod

def _module_abspath(cls, parent_repo, path, name):

if cls._need_gitfile_submodules(parent_repo.git):

return os.path.join(parent_repo.git_dir, 'modules', name)

else:

return os.path.join(parent_repo.working_tree_dir, path)

# end

@classmethod

def _clone_repo(cls, repo, url, path, name, **kwargs):

""":return: Repo instance of newly cloned repository

:param repo: our parent repository

:param url: url to clone from

:param path: repository-relative path to the submodule checkout location

:param name: canonical of the submodule

:param kwrags: additinoal arguments given to git.clone"""

module_abspath = cls._module_abspath(repo, path, name)

module_checkout_path = module_abspath

if cls._need_gitfile_submodules(repo.git):

kwargs['separate_git_dir'] = module_abspath

module_abspath_dir = os.path.dirname(module_abspath)

if not os.path.isdir(module_abspath_dir):

os.makedirs(module_abspath_dir)

module_checkout_path = os.path.join(repo.working_tree_dir, path)

# end

clone = git.Repo.clone_from(url, module_checkout_path, **kwargs)

if cls._need_gitfile_submodules(repo.git):

cls._write_git_file_and_module_config(module_checkout_path, module_abspath)

# end

return clone

@classmethod

def _to_relative_path(cls, parent_repo, path):

""":return: a path guaranteed to be relative to the given parent-repository

:raise ValueError: if path is not contained in the parent repository's working tree"""

path = to_native_path_linux(path)

if path.endswith('/'):

path = path[:-1]

# END handle trailing slash

if os.path.isabs(path):

working_tree_linux = to_native_path_linux(parent_repo.working_tree_dir)

if not path.startswith(working_tree_linux):

raise ValueError("Submodule checkout path '%s' needs to be within the parents repository at '%s'"

% (working_tree_linux, path))

path = path[len(working_tree_linux) + 1:]

if not path:

raise ValueError("Absolute submodule path '%s' didn't yield a valid relative path" % path)

# end verify converted relative path makes sense

# end convert to a relative path

return path

@classmethod

def _write_git_file_and_module_config(cls, working_tree_dir, module_abspath):

"""Writes a .git file containing a (preferably) relative path to the actual git module repository.

It is an error if the module_abspath cannot be made into a relative path, relative to the working_tree_dir

:note: will overwrite existing files !

:note: as we rewrite both the git file as well as the module configuration, we might fail on the configuration

and will not roll back changes done to the git file. This should be a non-issue, but may easily be fixed

if it becomes one

:param working_tree_dir: directory to write the .git file into

:param module_abspath: absolute path to the bare repository

"""

git_file = os.path.join(working_tree_dir, '.git')

rela_path = os.path.relpath(module_abspath, start=working_tree_dir)

fp = open(git_file, 'wb')

fp.write(("gitdir: %s" % rela_path).encode(defenc))

fp.close()

writer = GitConfigParser(os.path.join(module_abspath, 'config'), read_only=False, merge_includes=False)

writer.set_value('core', 'worktree',

to_native_path_linux(os.path.relpath(working_tree_dir, start=module_abspath)))

writer.release()

#{ Edit Interface

@classmethod

def add(cls, repo, name, path, url=None, branch=None, no_checkout=False):

"""Add a new submodule to the given repository. This will alter the index

as well as the .gitmodules file, but will not create a new commit.

If the submodule already exists, no matter if the configuration differs

from the one provided, the existing submodule will be returned.

:param repo: Repository instance which should receive the submodule

:param name: The name/identifier for the submodule

:param path: repository-relative or absolute path at which the submodule

should be located

It will be created as required during the repository initialization.

:param url: git-clone compatible URL, see git-clone reference for more information

If None, the repository is assumed to exist, and the url of the first

remote is taken instead. This is useful if you want to make an existing

repository a submodule of anotherone.

:param branch: name of branch at which the submodule should (later) be checked out.

The given branch must exist in the remote repository, and will be checked

out locally as a tracking branch.

It will only be written into the configuration if it not None, which is

when the checked out branch will be the one the remote HEAD pointed to.

The result you get in these situation is somewhat fuzzy, and it is recommended

to specify at least 'master' here.

Examples are 'master' or 'feature/new'

:param no_checkout: if True, and if the repository has to be cloned manually,

no checkout will be performed

:return: The newly created submodule instance

:note: works atomically, such that no change will be done if the repository

update fails for instance"""

if repo.bare:

raise InvalidGitRepositoryError("Cannot add submodules to bare repositories")

# END handle bare repos

path = cls._to_relative_path(repo, path)

# assure we never put backslashes into the url, as some operating systems

# like it ...

if url is not None:

url = to_native_path_linux(url)

# END assure url correctness

# INSTANTIATE INTERMEDIATE SM

sm = cls(repo, cls.NULL_BIN_SHA, cls.k_default_mode, path, name, url='invalid-temporary')

if sm.exists():

# reretrieve submodule from tree

try:

return repo.head.commit.tree[path]

except KeyError:

# could only be in index

index = repo.index

entry = index.entries[index.entry_key(path, 0)]

sm.binsha = entry.binsha

return sm

# END handle exceptions

# END handle existing

# fake-repo - we only need the functionality on the branch instance

br = git.Head(repo, git.Head.to_full_path(str(branch) or cls.k_head_default))

has_module = sm.module_exists()

branch_is_default = branch is None

if has_module and url is not None:

if url not in [r.url for r in sm.module().remotes]:

raise ValueError(

"Specified URL '%s' does not match any remote url of the repository at '%s'" % (url, sm.abspath))

# END check url

# END verify urls match

mrepo = None

if url is None:

if not has_module:

raise ValueError("A URL was not given and existing repository did not exsit at %s" % path)

# END check url

mrepo = sm.module()

urls = [r.url for r in mrepo.remotes]

if not urls:

raise ValueError("Didn't find any remote url in repository at %s" % sm.abspath)

# END verify we have url

url = urls[0]

else:

# clone new repo

kwargs = {'n': no_checkout}

if not branch_is_default:

kwargs['b'] = br.name

# END setup checkout-branch

# _clone_repo(cls, repo, url, path, name, **kwargs):

mrepo = cls._clone_repo(repo, url, path, name, **kwargs)

# END verify url

# It's important to add the URL to the parent config, to let `git submodule` know.

# otherwise there is a '-' character in front of the submodule listing

# a38efa84daef914e4de58d1905a500d8d14aaf45 mymodule (v0.9.0-1-ga38efa8)

# -a38efa84daef914e4de58d1905a500d8d14aaf45 submodules/intermediate/one

writer = sm.repo.config_writer()

writer.set_value(sm_section(name), 'url', url)

writer.release()

# update configuration and index

index = sm.repo.index

writer = sm.config_writer(index=index, write=False)

writer.set_value('url', url)

writer.set_value('path', path)

sm._url = url

if not branch_is_default:

# store full path

writer.set_value(cls.k_head_option, br.path)

sm._branch_path = br.path

# END handle path

writer.release()

del(writer)

# we deliberatly assume that our head matches our index !

sm.binsha = mrepo.head.commit.binsha

index.add([sm], write=True)

return sm

def update(self, recursive=False, init=True, to_latest_revision=False, progress=None, dry_run=False,

force=False, keep_going=False):

"""Update the repository of this submodule to point to the checkout

we point at with the binsha of this instance.

:param recursive: if True, we will operate recursively and update child-

modules as well.

:param init: if True, the module repository will be cloned into place if necessary

:param to_latest_revision: if True, the submodule's sha will be ignored during checkout.

Instead, the remote will be fetched, and the local tracking branch updated.

This only works if we have a local tracking branch, which is the case

if the remote repository had a master branch, or of the 'branch' option

was specified for this submodule and the branch existed remotely

:param progress: UpdateProgress instance or None of no progress should be shown

:param dry_run: if True, the operation will only be simulated, but not performed.

All performed operations are read-only

:param force:

If True, we may reset heads even if the repository in question is dirty. Additinoally we will be allowed

to set a tracking branch which is ahead of its remote branch back into the past or the location of the

remote branch. This will essentially 'forget' commits.

If False, local tracking branches that are in the future of their respective remote branches will simply

not be moved.

: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

:note: does nothing in bare repositories

:note: method is definitely not atomic if recurisve is True

:return: self"""

if self.repo.bare:

return self

# END pass in bare mode

if progress is None:

progress = UpdateProgress()

# END handle progress

prefix = ''

if dry_run:

prefix = "DRY-RUN: "

# END handle prefix

# to keep things plausible in dry-run mode

if dry_run:

mrepo = None

# END init mrepo

try:

# ASSURE REPO IS PRESENT AND UPTODATE

#####################################

try:

mrepo = self.module()

rmts = mrepo.remotes

len_rmts = len(rmts)

for i, remote in enumerate(rmts):

op = FETCH

if i == 0:

op |= BEGIN

# END handle start

progress.update(op, i, len_rmts, prefix + "Fetching remote %s of submodule %r"

% (remote, self.name))

#===============================

if not dry_run:

remote.fetch(progress=progress)

# END handle dry-run

#===============================

if i == len_rmts - 1:

op |= END

# END handle end

progress.update(op, i, len_rmts, prefix + "Done fetching remote of submodule %r" % self.name)

# END fetch new data

except InvalidGitRepositoryError:

if not init:

return self

# END early abort if init is not allowed

# there is no git-repository yet - but delete empty paths

checkout_module_abspath = self.abspath

if not dry_run and os.path.isdir(checkout_module_abspath):

try:

os.rmdir(checkout_module_abspath)

except OSError:

raise OSError("Module directory at %r does already exist and is non-empty"

% checkout_module_abspath)

# END handle OSError

# END handle directory removal

# don't check it out at first - nonetheless it will create a local

# branch according to the remote-HEAD if possible

progress.update(BEGIN | CLONE, 0, 1, prefix + "Cloning url '%s' to '%s' in submodule %r" %

(self.url, checkout_module_abspath, self.name))

if not dry_run:

mrepo = self._clone_repo(self.repo, self.url, self.path, self.name, n=True)

# END handle dry-run

progress.update(END | CLONE, 0, 1, prefix + "Done cloning to %s" % checkout_module_abspath)

if not dry_run:

# see whether we have a valid branch to checkout

try:

# find a remote which has our branch - we try to be flexible

remote_branch = find_first_remote_branch(mrepo.remotes, self.branch_name)

local_branch = mkhead(mrepo, self.branch_path)

# have a valid branch, but no checkout - make sure we can figure

# that out by marking the commit with a null_sha

local_branch.set_object(util.Object(mrepo, self.NULL_BIN_SHA))

# END initial checkout + branch creation

# make sure HEAD is not detached

mrepo.head.set_reference(local_branch, logmsg="submodule: attaching head to %s" % local_branch)

mrepo.head.ref.set_tracking_branch(remote_branch)

except IndexError:

log.warn("Failed to checkout tracking branch %s", self.branch_path)

# END handle tracking branch

# NOTE: Have to write the repo config file as well, otherwise

# the default implementation will be offended and not update the repository

# Maybe this is a good way to assure it doesn't get into our way, but

# we want to stay backwards compatible too ... . Its so redundant !

writer = self.repo.config_writer()

writer.set_value(sm_section(self.name), 'url', self.url)

writer.release()

# END handle dry_run

# END handle initalization

# DETERMINE SHAS TO CHECKOUT

############################

binsha = self.binsha

hexsha = self.hexsha

if mrepo is not None:

# mrepo is only set if we are not in dry-run mode or if the module existed

is_detached = mrepo.head.is_detached

# END handle dry_run

if mrepo is not None and to_latest_revision:

msg_base = "Cannot update to latest revision in repository at %r as " % mrepo.working_dir

if not is_detached:

rref = mrepo.head.ref.tracking_branch()

if rref is not None:

rcommit = rref.commit

binsha = rcommit.binsha

hexsha = rcommit.hexsha

else:

log.error("%s a tracking branch was not set for local branch '%s'", msg_base, mrepo.head.ref)

# END handle remote ref

else:

log.error("%s there was no local tracking branch", msg_base)

# END handle detached head

# END handle to_latest_revision option

# update the working tree

# handles dry_run

if mrepo is not None and mrepo.head.commit.binsha != binsha:

# We must assure that our destination sha (the one to point to) is in the future of our current head.

# Otherwise, we will reset changes that might have been done on the submodule, but were not yet pushed

# We also handle the case that history has been rewritten, leaving no merge-base. In that case

# we behave conservatively, protecting possible changes the user had done

may_reset = True

if mrepo.head.commit.binsha != self.NULL_BIN_SHA:

base_commit = mrepo.merge_base(mrepo.head.commit, hexsha)

if len(base_commit) == 0 or base_commit[0].hexsha == hexsha:

if force:

msg = "Will force checkout or reset on local branch that is possibly in the future of"

msg += "the commit it will be checked out to, effectively 'forgetting' new commits"

log.debug(msg)

else:

msg = "Skipping %s on branch '%s' of submodule repo '%s' as it contains un-pushed commits"

msg %= (is_detached and "checkout" or "reset", mrepo.head, mrepo)

log.info(msg)

may_reset = False

# end handle force

# end handle if we are in the future

if may_reset and not force and mrepo.is_dirty(index=True, working_tree=True, untracked_files=True):

raise RepositoryDirtyError(mrepo, "Cannot reset a dirty repository")

# end handle force and dirty state

# end handle empty repo

# end verify future/past

progress.update(BEGIN | UPDWKTREE, 0, 1, prefix +

"Updating working tree at %s for submodule %r to revision %s"

% (self.path, self.name, hexsha))

if not dry_run and may_reset:

if is_detached:

# NOTE: for now we force, the user is no supposed to change detached

# submodules anyway. Maybe at some point this becomes an option, to

# properly handle user modifications - see below for future options

# regarding rebase and merge.

mrepo.git.checkout(hexsha, force=force)

else:

mrepo.head.reset(hexsha, index=True, working_tree=True)

# END handle checkout

# if we may reset/checkout

progress.update(END | UPDWKTREE, 0, 1, prefix + "Done updating working tree for submodule %r"

% self.name)

# END update to new commit only if needed

except Exception as err:

if not keep_going:

raise

log.error(str(err))

# end handle keep_going

# HANDLE RECURSION

##################

if recursive:

# in dry_run mode, the module might not exist

if mrepo is not None:

for submodule in self.iter_items(self.module()):

submodule.update(recursive, init, to_latest_revision, progress=progress, dry_run=dry_run,

force=force, keep_going=keep_going)

# END handle recursive update

# END handle dry run

# END for each submodule

return self

@unbare_repo

def move(self, module_path, configuration=True, module=True):

"""Move the submodule to a another module path. This involves physically moving

the repository at our current path, changing the configuration, as well as

adjusting our index entry accordingly.

:param module_path: the path to which to move our module in the parent repostory's working tree,

given as repository-relative or absolute path. Intermediate directories will be created

accordingly. If the path already exists, it must be empty.

Trailing (back)slashes are removed automatically

:param configuration: if True, the configuration will be adjusted to let

the submodule point to the given path.

:param module: if True, the repository managed by this submodule

will be moved as well. If False, we don't move the submodule's checkout, which may leave

the parent repository in an inconsistent state.

:return: self

:raise ValueError: if the module path existed and was not empty, or was a file

:note: Currently the method is not atomic, and it could leave the repository

in an inconsistent state if a sub-step fails for some reason

"""

if module + configuration < 1:

raise ValueError("You must specify to move at least the module or the configuration of the submodule")

# END handle input

module_checkout_path = self._to_relative_path(self.repo, module_path)

# VERIFY DESTINATION

if module_checkout_path == self.path:

return self

# END handle no change

module_checkout_abspath = join_path_native(self.repo.working_tree_dir, module_checkout_path)

if os.path.isfile(module_checkout_abspath):

raise ValueError("Cannot move repository onto a file: %s" % module_checkout_abspath)

# END handle target files

index = self.repo.index

tekey = index.entry_key(module_checkout_path, 0)

# if the target item already exists, fail

if configuration and tekey in index.entries:

raise ValueError("Index entry for target path did already exist")

# END handle index key already there

# remove existing destination

if module:

if os.path.exists(module_checkout_abspath):

if len(os.listdir(module_checkout_abspath)):

raise ValueError("Destination module directory was not empty")

# END handle non-emptiness

if os.path.islink(module_checkout_abspath):

os.remove(module_checkout_abspath)

else:

os.rmdir(module_checkout_abspath)

# END handle link

else:

# recreate parent directories

# NOTE: renames() does that now

pass

# END handle existence

# END handle module

# move the module into place if possible

cur_path = self.abspath

renamed_module = False

if module and os.path.exists(cur_path):

os.renames(cur_path, module_checkout_abspath)

renamed_module = True

if os.path.isfile(os.path.join(module_checkout_abspath, '.git')):

module_abspath = self._module_abspath(self.repo, self.path, self.name)

self._write_git_file_and_module_config(module_checkout_abspath, module_abspath)

# end handle git file rewrite

# END move physical module

# rename the index entry - have to manipulate the index directly as

# git-mv cannot be used on submodules ... yeah

previous_sm_path = self.path

try:

if configuration:

try:

ekey = index.entry_key(self.path, 0)

entry = index.entries[ekey]

del(index.entries[ekey])

nentry = git.IndexEntry(entry[:3] + (module_checkout_path,) + entry[4:])

index.entries[tekey] = nentry

except KeyError:

raise InvalidGitRepositoryError("Submodule's entry at %r did not exist" % (self.path))

# END handle submodule doesn't exist

# update configuration

writer = self.config_writer(index=index) # auto-write

writer.set_value('path', module_checkout_path)

self.path = module_checkout_path

writer.release()

del(writer)

# END handle configuration flag

except Exception:

if renamed_module:

os.renames(module_checkout_abspath, cur_path)

# END undo module renaming

raise

# END handle undo rename

# Auto-rename submodule if it's name was 'default', that is, the checkout directory

if previous_sm_path == self.name:

self.rename(module_checkout_path)

# end

return self

@unbare_repo

def remove(self, module=True, force=False, configuration=True, dry_run=False):

"""Remove this submodule from the repository. This will remove our entry

from the .gitmodules file and the entry in the .git/config file.

:param module: If True, the module checkout we point to will be deleted

as well. If the module is currently on a commit which is not part

of any branch in the remote, if the currently checked out branch

working tree, or untracked files,

is ahead of its tracking branch, if you have modifications in the

In case the removal of the repository fails for these reasons, the

submodule status will not have been altered.

If this submodule has child-modules on its own, these will be deleted

prior to touching the own module.

:param force: Enforces the deletion of the module even though it contains

modifications. This basically enforces a brute-force file system based

deletion.

:param configuration: if True, the submodule is deleted from the configuration,

otherwise it isn't. Although this should be enabled most of the times,

this flag enables you to safely delete the repository of your submodule.

:param dry_run: if True, we will not actually do anything, but throw the errors

we would usually throw

:return: self

:note: doesn't work in bare repositories

:note: doesn't work atomically, as failure to remove any part of the submodule will leave

an inconsistent state

:raise InvalidGitRepositoryError: thrown if the repository cannot be deleted

:raise OSError: if directories or files could not be removed"""

if not (module or configuration):

raise ValueError("Need to specify to delete at least the module, or the configuration")

# END handle parameters

# Recursively remove children of this submodule

nc = 0

for csm in self.children():

nc += 1

csm.remove(module, force, configuration, dry_run)

del(csm)

# end

if configuration and not dry_run and nc > 0:

# Assure we don't leave the parent repository in a dirty state, and commit our changes

# It's important for recursive, unforced, deletions to work as expected

self.module().index.commit("Removed at least one of child-modules of '%s'" % self.name)

# end handle recursion

# DELETE REPOSITORY WORKING TREE

################################

if module and self.module_exists():

mod = self.module()

git_dir = mod.git_dir

if force:

# take the fast lane and just delete everything in our module path

# TODO: If we run into permission problems, we have a highly inconsistent

# state. Delete the .git folders last, start with the submodules first

mp = self.abspath

method = None

if os.path.islink(mp):

method = os.remove

elif os.path.isdir(mp):

method = rmtree

elif os.path.exists(mp):

raise AssertionError("Cannot forcibly delete repository as it was neither a link, nor a directory")

# END handle brutal deletion

if not dry_run:

assert method

method(mp)

# END apply deletion method

else:

# verify we may delete our module

if mod.is_dirty(index=True, working_tree=True, untracked_files=True):

raise InvalidGitRepositoryError(

"Cannot delete module at %s with any modifications, unless force is specified"

% mod.working_tree_dir)

# END check for dirt

# figure out whether we have new commits compared to the remotes

# NOTE: If the user pulled all the time, the remote heads might

# not have been updated, so commits coming from the remote look

# as if they come from us. But we stay strictly read-only and

# don't fetch beforehand.

for remote in mod.remotes:

num_branches_with_new_commits = 0

rrefs = remote.refs

for rref in rrefs:

num_branches_with_new_commits += len(mod.git.cherry(rref)) != 0

# END for each remote ref

# not a single remote branch contained all our commits

if num_branches_with_new_commits == len(rrefs):

raise InvalidGitRepositoryError(

"Cannot delete module at %s as there are new commits" % mod.working_tree_dir)

# END handle new commits

# have to manually delete references as python's scoping is

# not existing, they could keep handles open ( on windows this is a problem )

if len(rrefs):

del(rref)

# END handle remotes

del(rrefs)

del(remote)

# END for each remote

# finally delete our own submodule

if not dry_run:

wtd = mod.working_tree_dir

del(mod) # release file-handles (windows)

rmtree(wtd)

# END delete tree if possible

# END handle force

if not dry_run and os.path.isdir(git_dir):

rmtree(git_dir)

# end handle separate bare repository

# END handle module deletion

# void our data not to delay invalid access

if not dry_run:

self._clear_cache()

# DELETE CONFIGURATION

######################

if configuration and not dry_run:

# first the index-entry

parent_index = self.repo.index

try:

del(parent_index.entries[parent_index.entry_key(self.path, 0)])

except KeyError:

pass

# END delete entry

parent_index.write()

# now git config - need the config intact, otherwise we can't query

# information anymore

writer = self.repo.config_writer()

writer.remove_section(sm_section(self.name))

writer.release()

writer = self.config_writer()

writer.remove_section()

writer.release()

# END delete configuration

return self

def set_parent_commit(self, commit, check=True):

"""Set this instance to use the given commit whose tree is supposed to

contain the .gitmodules blob.

:param commit:

Commit'ish reference pointing at the root_tree, or None to always point to the

most recent commit

:param check:

if True, relatively expensive checks will be performed to verify

validity of the submodule.

:raise ValueError: if the commit's tree didn't contain the .gitmodules blob.

:raise ValueError:

if the parent commit didn't store this submodule under the current path

:return: self"""

if commit is None:

self._parent_commit = None

return self

# end handle None

pcommit = self.repo.commit(commit)

pctree = pcommit.tree

if self.k_modules_file not in pctree:

raise ValueError("Tree of commit %s did not contain the %s file" % (commit, self.k_modules_file))

# END handle exceptions

prev_pc = self._parent_commit

self._parent_commit = pcommit

if check:

parser = self._config_parser(self.repo, self._parent_commit, read_only=True)

if not parser.has_section(sm_section(self.name)):

self._parent_commit = prev_pc

raise ValueError("Submodule at path %r did not exist in parent commit %s" % (self.path, commit))

# END handle submodule did not exist

# END handle checking mode

# update our sha, it could have changed

# If check is False, we might see a parent-commit that doens't even contain the submodule anymore.

# in that case, mark our sha as being NULL

try:

self.binsha = pctree[self.path].binsha

except KeyError:

self.binsha = self.NULL_BIN_SHA

# end

self._clear_cache()

return self

@unbare_repo

def config_writer(self, index=None, write=True):

""":return: a config writer instance allowing you to read and write the data

belonging to this submodule into the .gitmodules file.

:param index: if not None, an IndexFile instance which should be written.

defaults to the index of the Submodule's parent repository.

:param write: if True, the index will be written each time a configuration

value changes.

:note: the parameters allow for a more efficient writing of the index,

as you can pass in a modified index on your own, prevent automatic writing,

and write yourself once the whole operation is complete

:raise ValueError: if trying to get a writer on a parent_commit which does not

match the current head commit

:raise IOError: If the .gitmodules file/blob could not be read"""

writer = self._config_parser_constrained(read_only=False)

if index is not None:

writer.config._index = index

writer.config._auto_write = write

return writer

@unbare_repo

def rename(self, new_name):

"""Rename this submodule

:note: This method takes care of renaming the submodule in various places, such as

* $parent_git_dir/config

* $working_tree_dir/.gitmodules

* (git >=v1.8.0: move submodule repository to new name)

As .gitmodules will be changed, you would need to make a commit afterwards. The changed .gitmodules file

will already be added to the index

:return: this submodule instance

"""

if self.name == new_name:

return self

# .git/config

pw = self.repo.config_writer()

# As we ourselves didn't write anything about submodules into the parent .git/config, we will not require

# it to exist, and just ignore missing entries

if pw.has_section(sm_section(self.name)):

pw.rename_section(sm_section(self.name), sm_section(new_name))

# end

pw.release()

# .gitmodules

cw = self.config_writer(write=True).config

cw.rename_section(sm_section(self.name), sm_section(new_name))

cw.release()

self._name = new_name

# .git/modules

mod = self.module()

if mod.has_separate_working_tree():

destination_module_abspath = self._module_abspath(self.repo, self.path, new_name)

source_dir = mod.git_dir

# Let's be sure the submodule name is not so obviously tied to a directory

if destination_module_abspath.startswith(mod.git_dir):

tmp_dir = self._module_abspath(self.repo, self.path, str(uuid.uuid4()))

os.renames(source_dir, tmp_dir)

source_dir = tmp_dir

View remainder of file in raw view

GitPython/git/objects/submodule/base.py at master · githubdelegate/GitPython · GitHub

Repository navigation

Expand file tree

Breadcrumbs

base.py

Latest commit

History

Breadcrumbs

base.py

File metadata and controls