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# Copyright (C) 2006-2007, 2010-2011 Aaron Bentley <aaron@aaronbentley.com>
# Copyright (C) 2007 Charlie Shepherd <masterdriverz@gentoo.org>
# Copyright (C) 2011 Canonical Ltd.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from shutil import rmtree
from bzrlib import (
bzrdir,
revision as _mod_revision,
)
from bzrlib.branch import Branch
from bzrlib.errors import BzrCommandError, NoWorkingTree, NotBranchError
from bzrlib import registry
from bzrlib.workingtree import WorkingTree
from errors import (NotCheckout, UncommittedCheckout, ParentMissingRevisions,
NoParent)
class AllowChanged(object):
@classmethod
def check_changed(klass, wt, remove_branch):
pass
class CheckChanged(object):
@classmethod
def check_changed(klass, wt, remove_branch):
delta = wt.changes_from(wt.basis_tree(), want_unchanged=False)
if delta.has_changed():
klass.handle_changed(wt, remove_branch)
class HaltOnChange(CheckChanged):
@staticmethod
def handle_changed(wt, remove_branch):
raise UncommittedCheckout()
class StoreChanges(CheckChanged):
@staticmethod
def handle_changed(wt, remove_branch):
from bzrlib.plugins.pipeline.pipeline import PipeManager
if remove_branch:
raise BzrCommandError('Cannot store changes in deleted branch.')
PipeManager.from_checkout(wt).store_uncommitted()
change_policy_registry = registry.Registry()
change_policy_registry.register('force', AllowChanged,
'Delete tree even if contents are modified.')
change_policy_registry.register('store', StoreChanges,
'Store changes in branch. (Requires'
' bzr-pipeline.)')
change_policy_registry.register('check', HaltOnChange,
'Stop if tree contents are modified.')
change_policy_registry.default_key = 'check'
def zap(path, remove_branch=False, policy=HaltOnChange):
try:
wt = bzrdir.BzrDir.open(path).open_workingtree(path,
recommend_upgrade=False)
except (NoWorkingTree, NotBranchError):
raise NotCheckout(path)
tree_base = wt.bzrdir.transport.base
branch = wt.branch
branch_base = branch.bzrdir.transport.base
if tree_base == branch_base:
raise NotCheckout(path)
policy.check_changed(wt, remove_branch)
if remove_branch:
parent_loc = branch.get_parent()
if parent_loc is None:
raise NoParent()
parent = Branch.open(parent_loc)
last_revision = _mod_revision.ensure_null(parent.last_revision())
p_ancestry = parent.repository.get_ancestry(last_revision)
if (last_revision != _mod_revision.NULL_REVISION and
branch.last_revision() not in p_ancestry):
raise ParentMissingRevisions(branch.get_parent())
rmtree(path)
if remove_branch:
t = branch.bzrdir.transport
while t.base != branch_base:
t = t.clone('..')
t = t.clone('..')
t.delete_tree('')
def test_suite():
import os
from unittest import makeSuite
from bzrlib.tests import TestCaseInTempDir
class PipelinePluginFeature:
@staticmethod
def available():
try:
import bzrlib.plugins.pipeline
except ImportError:
return False
else:
return True
class TestZap(TestCaseInTempDir):
def make_checkout(self):
wt = bzrdir.BzrDir.create_standalone_workingtree('source')
return wt.branch.create_checkout('checkout', lightweight=True)
def make_checkout2(self):
wt = self.make_checkout()
wt2 = wt.branch.bzrdir.sprout('source2').open_workingtree()
return wt2.branch.create_checkout('checkout2', lightweight=True)
def test_is_checkout(self):
self.assertRaises(NotCheckout, zap, '.')
wt = bzrdir.BzrDir.create_standalone_workingtree('.')
self.assertRaises(NotCheckout, zap, '.')
def test_zap_works(self):
self.make_checkout()
self.assertIs(True, os.path.exists('checkout'))
zap('checkout')
self.assertIs(False, os.path.exists('checkout'))
self.assertIs(True, os.path.exists('source'))
def test_zap_branch(self):
self.make_checkout2()
base = WorkingTree.open('checkout').branch.base
self.assertIs(True, os.path.exists('checkout'))
self.assertRaises(NoParent, zap, 'checkout', remove_branch=True)
self.assertIs(True, os.path.exists('checkout'))
self.assertIs(True, os.path.exists('source'))
zap('checkout2', remove_branch=True)
self.assertIs(False, os.path.exists('checkout2'))
self.assertIs(False, os.path.exists('source2'))
def test_checks_modified(self):
checkout = self.make_checkout()
os.mkdir('checkout/foo')
checkout.add('foo')
self.assertRaises(UncommittedCheckout, zap, 'checkout')
checkout.commit('commit changes to branch')
zap('checkout')
def make_modified_checkout(self):
checkout = self.make_checkout()
os.mkdir('checkout/foo')
checkout.add('foo')
return checkout
def test_allow_modified(self):
self.make_modified_checkout()
self.assertRaises(UncommittedCheckout, zap, 'checkout')
zap('checkout', policy=AllowChanged)
def test_store(self):
self.requireFeature(PipelinePluginFeature)
checkout = self.make_modified_checkout()
zap('checkout', policy=StoreChanges)
self.assertIn('stored-transform',
checkout.branch.bzrdir.transport.list_dir('branch'))
def test_store_remove_branch(self):
self.requireFeature(PipelinePluginFeature)
checkout = self.make_modified_checkout()
branch = self.make_branch('branch')
checkout.branch.set_parent(branch.base)
e = self.assertRaises(BzrCommandError, zap, 'checkout',
policy=StoreChanges, remove_branch=True)
self.assertEqual('Cannot store changes in deleted branch.', str(e))
def test_store_remove_branch_unmodified(self):
self.requireFeature(PipelinePluginFeature)
checkout = self.make_checkout()
branch = self.make_branch('branch')
checkout.branch.set_parent(branch.base)
zap('checkout', policy=StoreChanges, remove_branch=True)
return makeSuite(TestZap)
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