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# Copyright (C) 2005 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from warnings import warn
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from cStringIO import StringIO
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import bzrlib.inventory as inventory
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from bzrlib.trace import mutter, note
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from bzrlib.osutils import (isdir, quotefn,
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rename, splitpath, sha_file, appendpath,
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import bzrlib.errors as errors
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from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
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NoSuchRevision, HistoryMissing, NotBranchError,
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DivergedBranches, LockError, UnlistableStore,
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UnlistableBranch, NoSuchFile, NotVersionedError,
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from bzrlib.textui import show_status
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from bzrlib.revision import (Revision, is_ancestor, get_intervening_revisions,
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from bzrlib.delta import compare_trees
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from bzrlib.tree import EmptyTree, RevisionTree
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from bzrlib.inventory import Inventory
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from bzrlib.store import copy_all
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from bzrlib.store.text import TextStore
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from bzrlib.store.weave import WeaveStore
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from bzrlib.testament import Testament
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import bzrlib.transactions as transactions
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from bzrlib.transport import Transport, get_transport
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from config import TreeConfig
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar-NG branch, format 6\n"
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## TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations.
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def find_branch(*ignored, **ignored_too):
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# XXX: leave this here for about one release, then remove it
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raise NotImplementedError('find_branch() is not supported anymore, '
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'please use one of the new branch constructors')
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def needs_read_lock(unbound):
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"""Decorate unbound to take out and release a read lock."""
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def decorated(self, *args, **kwargs):
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return unbound(self, *args, **kwargs)
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def needs_write_lock(unbound):
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"""Decorate unbound to take out and release a write lock."""
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def decorated(self, *args, **kwargs):
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return unbound(self, *args, **kwargs)
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch.
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def __init__(self, *ignored, **ignored_too):
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raise NotImplementedError('The Branch class is abstract')
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def open_downlevel(base):
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"""Open a branch which may be of an old format.
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Only local branches are supported."""
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return BzrBranch(get_transport(base), relax_version_check=True)
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"""Open an existing branch, rooted at 'base' (url)"""
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t = get_transport(base)
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mutter("trying to open %r with transport %r", base, t)
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def open_containing(url):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one, it is returned, along with the unused portion of url.
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t = get_transport(url)
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return BzrBranch(t), t.relpath(url)
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except NotBranchError:
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new_t = t.clone('..')
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if new_t.base == t.base:
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# reached the root, whatever that may be
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raise NotBranchError(path=url)
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def initialize(base):
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"""Create a new branch, rooted at 'base' (url)"""
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t = get_transport(base)
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return BzrBranch(t, init=True)
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def setup_caching(self, cache_root):
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"""Subclasses that care about caching should override this, and set
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up cached stores located under cache_root.
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self.cache_root = cache_root
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cfg = self.tree_config()
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return cfg.get_option(u"nickname", default=self.base.split('/')[-1])
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def _set_nick(self, nick):
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cfg = self.tree_config()
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cfg.set_option(nick, "nickname")
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assert cfg.get_option("nickname") == nick
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nick = property(_get_nick, _set_nick)
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def push_stores(self, branch_to):
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"""Copy the content of this branches store to branch_to."""
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raise NotImplementedError('push_stores is abstract')
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def get_transaction(self):
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"""Return the current active transaction.
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If no transaction is active, this returns a passthrough object
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for which all data is immediately flushed and no caching happens.
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raise NotImplementedError('get_transaction is abstract')
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def lock_write(self):
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raise NotImplementedError('lock_write is abstract')
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raise NotImplementedError('lock_read is abstract')
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raise NotImplementedError('unlock is abstract')
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def abspath(self, name):
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"""Return absolute filename for something in the branch
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XXX: Robert Collins 20051017 what is this used for? why is it a branch
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method and not a tree method.
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raise NotImplementedError('abspath is abstract')
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def controlfilename(self, file_or_path):
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"""Return location relative to branch."""
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raise NotImplementedError('controlfilename is abstract')
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def controlfile(self, file_or_path, mode='r'):
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"""Open a control file for this branch.
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There are two classes of file in the control directory: text
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and binary. binary files are untranslated byte streams. Text
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control files are stored with Unix newlines and in UTF-8, even
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if the platform or locale defaults are different.
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Controlfiles should almost never be opened in write mode but
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rather should be atomically copied and replaced using atomicfile.
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raise NotImplementedError('controlfile is abstract')
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def put_controlfile(self, path, f, encode=True):
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"""Write an entry as a controlfile.
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:param path: The path to put the file, relative to the .bzr control
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:param f: A file-like or string object whose contents should be copied.
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:param encode: If true, encode the contents as utf-8
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raise NotImplementedError('put_controlfile is abstract')
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def put_controlfiles(self, files, encode=True):
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"""Write several entries as controlfiles.
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:param files: A list of [(path, file)] pairs, where the path is the directory
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underneath the bzr control directory
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:param encode: If true, encode the contents as utf-8
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raise NotImplementedError('put_controlfiles is abstract')
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def get_root_id(self):
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"""Return the id of this branches root"""
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raise NotImplementedError('get_root_id is abstract')
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def set_root_id(self, file_id):
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raise NotImplementedError('set_root_id is abstract')
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def print_file(self, file, revno):
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"""Print `file` to stdout."""
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raise NotImplementedError('print_file is abstract')
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def append_revision(self, *revision_ids):
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raise NotImplementedError('append_revision is abstract')
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def set_revision_history(self, rev_history):
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raise NotImplementedError('set_revision_history is abstract')
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def has_revision(self, revision_id):
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"""True if this branch has a copy of the revision.
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This does not necessarily imply the revision is merge
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or on the mainline."""
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raise NotImplementedError('has_revision is abstract')
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def get_revision_xml(self, revision_id):
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raise NotImplementedError('get_revision_xml is abstract')
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def get_revision(self, revision_id):
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"""Return the Revision object for a named revision"""
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raise NotImplementedError('get_revision is abstract')
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def get_revision_delta(self, revno):
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"""Return the delta for one revision.
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The delta is relative to its mainline predecessor, or the
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empty tree for revision 1.
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assert isinstance(revno, int)
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rh = self.revision_history()
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if not (1 <= revno <= len(rh)):
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raise InvalidRevisionNumber(revno)
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# revno is 1-based; list is 0-based
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new_tree = self.revision_tree(rh[revno-1])
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old_tree = EmptyTree()
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old_tree = self.revision_tree(rh[revno-2])
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return compare_trees(old_tree, new_tree)
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def get_revision_sha1(self, revision_id):
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"""Hash the stored value of a revision, and return it."""
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raise NotImplementedError('get_revision_sha1 is abstract')
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def get_ancestry(self, revision_id):
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"""Return a list of revision-ids integrated by a revision.
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This currently returns a list, but the ordering is not guaranteed:
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raise NotImplementedError('get_ancestry is abstract')
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def get_inventory(self, revision_id):
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"""Get Inventory object by hash."""
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raise NotImplementedError('get_inventory is abstract')
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def get_inventory_xml(self, revision_id):
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"""Get inventory XML as a file object."""
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raise NotImplementedError('get_inventory_xml is abstract')
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def get_inventory_sha1(self, revision_id):
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"""Return the sha1 hash of the inventory entry."""
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raise NotImplementedError('get_inventory_sha1 is abstract')
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def get_revision_inventory(self, revision_id):
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"""Return inventory of a past revision."""
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raise NotImplementedError('get_revision_inventory is abstract')
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def revision_history(self):
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"""Return sequence of revision hashes on to this branch."""
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raise NotImplementedError('revision_history is abstract')
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"""Return current revision number for this branch.
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That is equivalent to the number of revisions committed to
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return len(self.revision_history())
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def last_revision(self):
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"""Return last patch hash, or None if no history."""
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ph = self.revision_history()
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def missing_revisions(self, other, stop_revision=None, diverged_ok=False):
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"""Return a list of new revisions that would perfectly fit.
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If self and other have not diverged, return a list of the revisions
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present in other, but missing from self.
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>>> from bzrlib.commit import commit
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>>> bzrlib.trace.silent = True
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>>> br1 = ScratchBranch()
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>>> br2 = ScratchBranch()
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>>> br1.missing_revisions(br2)
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>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
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>>> br1.missing_revisions(br2)
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>>> br2.missing_revisions(br1)
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>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
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>>> br1.missing_revisions(br2)
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>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
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>>> br1.missing_revisions(br2)
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>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
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>>> br1.missing_revisions(br2)
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Traceback (most recent call last):
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DivergedBranches: These branches have diverged.
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self_history = self.revision_history()
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self_len = len(self_history)
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other_history = other.revision_history()
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other_len = len(other_history)
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common_index = min(self_len, other_len) -1
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if common_index >= 0 and \
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self_history[common_index] != other_history[common_index]:
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raise DivergedBranches(self, other)
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if stop_revision is None:
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stop_revision = other_len
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assert isinstance(stop_revision, int)
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if stop_revision > other_len:
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raise bzrlib.errors.NoSuchRevision(self, stop_revision)
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return other_history[self_len:stop_revision]
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def update_revisions(self, other, stop_revision=None):
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"""Pull in new perfect-fit revisions."""
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raise NotImplementedError('update_revisions is abstract')
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def pullable_revisions(self, other, stop_revision):
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raise NotImplementedError('pullable_revisions is abstract')
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def revision_id_to_revno(self, revision_id):
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"""Given a revision id, return its revno"""
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if revision_id is None:
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history = self.revision_history()
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return history.index(revision_id) + 1
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raise bzrlib.errors.NoSuchRevision(self, revision_id)
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def get_rev_id(self, revno, history=None):
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"""Find the revision id of the specified revno."""
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history = self.revision_history()
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elif revno <= 0 or revno > len(history):
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raise bzrlib.errors.NoSuchRevision(self, revno)
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return history[revno - 1]
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def revision_tree(self, revision_id):
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"""Return Tree for a revision on this branch.
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`revision_id` may be None for the null revision, in which case
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an `EmptyTree` is returned."""
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raise NotImplementedError('revision_tree is abstract')
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def working_tree(self):
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"""Return a `Tree` for the working copy if this is a local branch."""
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raise NotImplementedError('working_tree is abstract')
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def pull(self, source, overwrite=False):
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raise NotImplementedError('pull is abstract')
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def basis_tree(self):
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"""Return `Tree` object for last revision.
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If there are no revisions yet, return an `EmptyTree`.
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return self.revision_tree(self.last_revision())
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def rename_one(self, from_rel, to_rel):
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This can change the directory or the filename or both.
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raise NotImplementedError('rename_one is abstract')
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def move(self, from_paths, to_name):
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to_name must exist as a versioned directory.
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If to_name exists and is a directory, the files are moved into
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it, keeping their old names. If it is a directory,
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Note that to_name is only the last component of the new name;
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this doesn't change the directory.
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This returns a list of (from_path, to_path) pairs for each
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raise NotImplementedError('move is abstract')
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def get_parent(self):
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"""Return the parent location of the branch.
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This is the default location for push/pull/missing. The usual
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pattern is that the user can override it by specifying a
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raise NotImplementedError('get_parent is abstract')
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def get_push_location(self):
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"""Return the None or the location to push this branch to."""
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raise NotImplementedError('get_push_location is abstract')
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def set_push_location(self, location):
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"""Set a new push location for this branch."""
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raise NotImplementedError('set_push_location is abstract')
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def set_parent(self, url):
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raise NotImplementedError('set_parent is abstract')
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def check_revno(self, revno):
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Check whether a revno corresponds to any revision.
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Zero (the NULL revision) is considered valid.
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self.check_real_revno(revno)
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def check_real_revno(self, revno):
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Check whether a revno corresponds to a real revision.
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Zero (the NULL revision) is considered invalid
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if revno < 1 or revno > self.revno():
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raise InvalidRevisionNumber(revno)
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def sign_revision(self, revision_id, gpg_strategy):
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raise NotImplementedError('sign_revision is abstract')
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def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
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raise NotImplementedError('store_revision_signature is abstract')
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class BzrBranch(Branch):
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"""A branch stored in the actual filesystem.
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Note that it's "local" in the context of the filesystem; it doesn't
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really matter if it's on an nfs/smb/afs/coda/... share, as long as
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it's writable, and can be accessed via the normal filesystem API.
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If _lock_mode is true, a positive count of the number of times the
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Lock object from bzrlib.lock.
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# We actually expect this class to be somewhat short-lived; part of its
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# purpose is to try to isolate what bits of the branch logic are tied to
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# filesystem access, so that in a later step, we can extricate them to
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# a separarte ("storage") class.
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_inventory_weave = None
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# Map some sort of prefix into a namespace
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# stuff like "revno:10", "revid:", etc.
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# This should match a prefix with a function which accepts
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REVISION_NAMESPACES = {}
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def push_stores(self, branch_to):
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"""See Branch.push_stores."""
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if (self._branch_format != branch_to._branch_format
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or self._branch_format != 4):
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from bzrlib.fetch import greedy_fetch
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mutter("falling back to fetch logic to push between %s(%s) and %s(%s)",
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self, self._branch_format, branch_to, branch_to._branch_format)
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greedy_fetch(to_branch=branch_to, from_branch=self,
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revision=self.last_revision())
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store_pairs = ((self.text_store, branch_to.text_store),
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(self.inventory_store, branch_to.inventory_store),
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(self.revision_store, branch_to.revision_store))
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for from_store, to_store in store_pairs:
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copy_all(from_store, to_store)
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except UnlistableStore:
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raise UnlistableBranch(from_store)
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def __init__(self, transport, init=False,
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relax_version_check=False):
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"""Create new branch object at a particular location.
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transport -- A Transport object, defining how to access files.
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init -- If True, create new control files in a previously
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unversioned directory. If False, the branch must already
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relax_version_check -- If true, the usual check for the branch
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version is not applied. This is intended only for
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upgrade/recovery type use; it's not guaranteed that
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all operations will work on old format branches.
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In the test suite, creation of new trees is tested using the
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`ScratchBranch` class.
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assert isinstance(transport, Transport), \
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"%r is not a Transport" % transport
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self._transport = transport
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self._check_format(relax_version_check)
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def get_store(name, compressed=True, prefixed=False):
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# FIXME: This approach of assuming stores are all entirely compressed
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# or entirely uncompressed is tidy, but breaks upgrade from
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# some existing branches where there's a mixture; we probably
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# still want the option to look for both.
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relpath = self._rel_controlfilename(name)
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store = TextStore(self._transport.clone(relpath),
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compressed=compressed)
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#if self._transport.should_cache():
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# cache_path = os.path.join(self.cache_root, name)
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# os.mkdir(cache_path)
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# store = bzrlib.store.CachedStore(store, cache_path)
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def get_weave(name, prefixed=False):
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relpath = self._rel_controlfilename(name)
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ws = WeaveStore(self._transport.clone(relpath), prefixed=prefixed)
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if self._transport.should_cache():
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ws.enable_cache = True
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if self._branch_format == 4:
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self.inventory_store = get_store(u'inventory-store')
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self.text_store = get_store(u'text-store')
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self.revision_store = get_store(u'revision-store')
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elif self._branch_format == 5:
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self.control_weaves = get_weave(u'')
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self.weave_store = get_weave(u'weaves')
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self.revision_store = get_store(u'revision-store', compressed=False)
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elif self._branch_format == 6:
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self.control_weaves = get_weave(u'')
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self.weave_store = get_weave(u'weaves', prefixed=True)
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self.revision_store = get_store(u'revision-store', compressed=False,
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self.revision_store.register_suffix('sig')
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self._transaction = None
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return '%s(%r)' % (self.__class__.__name__, self._transport.base)
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if self._lock_mode or self._lock:
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# XXX: This should show something every time, and be suitable for
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# headless operation and embedding
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warn("branch %r was not explicitly unlocked" % self)
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# TODO: It might be best to do this somewhere else,
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# but it is nice for a Branch object to automatically
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# cache it's information.
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# Alternatively, we could have the Transport objects cache requests
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# See the earlier discussion about how major objects (like Branch)
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# should never expect their __del__ function to run.
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if hasattr(self, 'cache_root') and self.cache_root is not None:
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shutil.rmtree(self.cache_root)
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self.cache_root = None
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return self._transport.base
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base = property(_get_base, doc="The URL for the root of this branch.")
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def _finish_transaction(self):
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"""Exit the current transaction."""
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if self._transaction is None:
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raise errors.LockError('Branch %s is not in a transaction' %
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transaction = self._transaction
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self._transaction = None
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def get_transaction(self):
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"""See Branch.get_transaction."""
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if self._transaction is None:
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return transactions.PassThroughTransaction()
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return self._transaction
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def _set_transaction(self, new_transaction):
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"""Set a new active transaction."""
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if self._transaction is not None:
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raise errors.LockError('Branch %s is in a transaction already.' %
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self._transaction = new_transaction
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def lock_write(self):
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mutter("lock write: %s (%s)", self, self._lock_count)
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# TODO: Upgrade locking to support using a Transport,
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# and potentially a remote locking protocol
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if self._lock_mode != 'w':
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raise LockError("can't upgrade to a write lock from %r" %
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self._lock_count += 1
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self._lock = self._transport.lock_write(
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self._rel_controlfilename('branch-lock'))
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self._lock_mode = 'w'
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self._set_transaction(transactions.PassThroughTransaction())
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mutter("lock read: %s (%s)", self, self._lock_count)
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assert self._lock_mode in ('r', 'w'), \
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"invalid lock mode %r" % self._lock_mode
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self._lock_count += 1
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self._lock = self._transport.lock_read(
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self._rel_controlfilename('branch-lock'))
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self._lock_mode = 'r'
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self._set_transaction(transactions.ReadOnlyTransaction())
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# 5K may be excessive, but hey, its a knob.
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self.get_transaction().set_cache_size(5000)
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mutter("unlock: %s (%s)", self, self._lock_count)
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if not self._lock_mode:
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raise LockError('branch %r is not locked' % (self))
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if self._lock_count > 1:
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self._lock_count -= 1
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self._finish_transaction()
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self._lock_mode = self._lock_count = None
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def abspath(self, name):
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"""See Branch.abspath."""
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return self._transport.abspath(name)
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def _rel_controlfilename(self, file_or_path):
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if not isinstance(file_or_path, basestring):
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file_or_path = u'/'.join(file_or_path)
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if file_or_path == '':
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return bzrlib.transport.urlescape(bzrlib.BZRDIR + u'/' + file_or_path)
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def controlfilename(self, file_or_path):
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"""See Branch.controlfilename."""
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return self._transport.abspath(self._rel_controlfilename(file_or_path))
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def controlfile(self, file_or_path, mode='r'):
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"""See Branch.controlfile."""
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relpath = self._rel_controlfilename(file_or_path)
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#TODO: codecs.open() buffers linewise, so it was overloaded with
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# a much larger buffer, do we need to do the same for getreader/getwriter?
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return self._transport.get(relpath)
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raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
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# XXX: Do we really want errors='replace'? Perhaps it should be
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# an error, or at least reported, if there's incorrectly-encoded
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# data inside a file.
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# <https://launchpad.net/products/bzr/+bug/3823>
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return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
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raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
737
raise BzrError("invalid controlfile mode %r" % mode)
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def put_controlfile(self, path, f, encode=True):
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"""See Branch.put_controlfile."""
741
self.put_controlfiles([(path, f)], encode=encode)
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def put_controlfiles(self, files, encode=True):
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"""See Branch.put_controlfiles."""
747
for path, f in files:
749
if isinstance(f, basestring):
750
f = f.encode('utf-8', 'replace')
752
f = codecs.getwriter('utf-8')(f, errors='replace')
753
path = self._rel_controlfilename(path)
754
ctrl_files.append((path, f))
755
self._transport.put_multi(ctrl_files)
757
def _make_control(self):
758
from bzrlib.inventory import Inventory
759
from bzrlib.weavefile import write_weave_v5
760
from bzrlib.weave import Weave
762
# Create an empty inventory
764
# if we want per-tree root ids then this is the place to set
765
# them; they're not needed for now and so ommitted for
767
bzrlib.xml5.serializer_v5.write_inventory(Inventory(), sio)
768
empty_inv = sio.getvalue()
770
bzrlib.weavefile.write_weave_v5(Weave(), sio)
771
empty_weave = sio.getvalue()
773
dirs = [[], 'revision-store', 'weaves']
775
"This is a Bazaar-NG control directory.\n"
776
"Do not change any files in this directory.\n"),
777
('branch-format', BZR_BRANCH_FORMAT_6),
778
('revision-history', ''),
781
('pending-merges', ''),
782
('inventory', empty_inv),
783
('inventory.weave', empty_weave),
784
('ancestry.weave', empty_weave)
786
cfn = self._rel_controlfilename
787
self._transport.mkdir_multi([cfn(d) for d in dirs])
788
self.put_controlfiles(files)
789
mutter('created control directory in ' + self._transport.base)
791
def _check_format(self, relax_version_check):
792
"""Check this branch format is supported.
794
The format level is stored, as an integer, in
795
self._branch_format for code that needs to check it later.
797
In the future, we might need different in-memory Branch
798
classes to support downlevel branches. But not yet.
801
fmt = self.controlfile('branch-format', 'r').read()
803
raise NotBranchError(path=self.base)
804
mutter("got branch format %r", fmt)
805
if fmt == BZR_BRANCH_FORMAT_6:
806
self._branch_format = 6
807
elif fmt == BZR_BRANCH_FORMAT_5:
808
self._branch_format = 5
809
elif fmt == BZR_BRANCH_FORMAT_4:
810
self._branch_format = 4
812
if (not relax_version_check
813
and self._branch_format not in (5, 6)):
814
raise errors.UnsupportedFormatError(
815
'sorry, branch format %r not supported' % fmt,
816
['use a different bzr version',
817
'or remove the .bzr directory'
818
' and "bzr init" again'])
821
def get_root_id(self):
822
"""See Branch.get_root_id."""
823
inv = self.get_inventory(self.last_revision())
824
return inv.root.file_id
827
def print_file(self, file, revno):
828
"""See Branch.print_file."""
829
tree = self.revision_tree(self.get_rev_id(revno))
830
# use inventory as it was in that revision
831
file_id = tree.inventory.path2id(file)
833
raise BzrError("%r is not present in revision %s" % (file, revno))
834
tree.print_file(file_id)
837
def append_revision(self, *revision_ids):
838
"""See Branch.append_revision."""
839
for revision_id in revision_ids:
840
mutter("add {%s} to revision-history" % revision_id)
841
rev_history = self.revision_history()
842
rev_history.extend(revision_ids)
843
self.set_revision_history(rev_history)
846
def set_revision_history(self, rev_history):
847
"""See Branch.set_revision_history."""
848
old_revision = self.last_revision()
849
new_revision = rev_history[-1]
850
self.put_controlfile('revision-history', '\n'.join(rev_history))
851
self.working_tree().set_last_revision(new_revision, old_revision)
853
def has_revision(self, revision_id):
854
"""See Branch.has_revision."""
855
return (revision_id is None
856
or self.revision_store.has_id(revision_id))
859
def _get_revision_xml_file(self, revision_id):
860
if not revision_id or not isinstance(revision_id, basestring):
861
raise InvalidRevisionId(revision_id=revision_id, branch=self)
863
return self.revision_store.get(revision_id)
864
except (IndexError, KeyError):
865
raise bzrlib.errors.NoSuchRevision(self, revision_id)
867
def get_revision_xml(self, revision_id):
868
"""See Branch.get_revision_xml."""
869
return self._get_revision_xml_file(revision_id).read()
871
def get_revision(self, revision_id):
872
"""See Branch.get_revision."""
873
xml_file = self._get_revision_xml_file(revision_id)
876
r = bzrlib.xml5.serializer_v5.read_revision(xml_file)
877
except SyntaxError, e:
878
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
882
assert r.revision_id == revision_id
885
def get_revision_sha1(self, revision_id):
886
"""See Branch.get_revision_sha1."""
887
# In the future, revision entries will be signed. At that
888
# point, it is probably best *not* to include the signature
889
# in the revision hash. Because that lets you re-sign
890
# the revision, (add signatures/remove signatures) and still
891
# have all hash pointers stay consistent.
892
# But for now, just hash the contents.
893
return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
895
def get_ancestry(self, revision_id):
896
"""See Branch.get_ancestry."""
897
if revision_id is None:
899
w = self._get_inventory_weave()
900
return [None] + map(w.idx_to_name,
901
w.inclusions([w.lookup(revision_id)]))
903
def _get_inventory_weave(self):
904
return self.control_weaves.get_weave('inventory',
905
self.get_transaction())
907
def get_inventory(self, revision_id):
908
"""See Branch.get_inventory."""
909
xml = self.get_inventory_xml(revision_id)
910
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
912
def get_inventory_xml(self, revision_id):
913
"""See Branch.get_inventory_xml."""
915
assert isinstance(revision_id, basestring), type(revision_id)
916
iw = self._get_inventory_weave()
917
return iw.get_text(iw.lookup(revision_id))
919
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
921
def get_inventory_sha1(self, revision_id):
922
"""See Branch.get_inventory_sha1."""
923
return self.get_revision(revision_id).inventory_sha1
925
def get_revision_inventory(self, revision_id):
926
"""See Branch.get_revision_inventory."""
927
# TODO: Unify this with get_inventory()
928
# bzr 0.0.6 and later imposes the constraint that the inventory_id
929
# must be the same as its revision, so this is trivial.
930
if revision_id == None:
931
# This does not make sense: if there is no revision,
932
# then it is the current tree inventory surely ?!
933
# and thus get_root_id() is something that looks at the last
934
# commit on the branch, and the get_root_id is an inventory check.
935
raise NotImplementedError
936
# return Inventory(self.get_root_id())
938
return self.get_inventory(revision_id)
941
def revision_history(self):
942
"""See Branch.revision_history."""
943
transaction = self.get_transaction()
944
history = transaction.map.find_revision_history()
945
if history is not None:
946
mutter("cache hit for revision-history in %s", self)
948
history = [l.rstrip('\r\n') for l in
949
self.controlfile('revision-history', 'r').readlines()]
950
transaction.map.add_revision_history(history)
951
# this call is disabled because revision_history is
952
# not really an object yet, and the transaction is for objects.
953
# transaction.register_clean(history, precious=True)
956
def update_revisions(self, other, stop_revision=None):
957
"""See Branch.update_revisions."""
958
from bzrlib.fetch import greedy_fetch
959
if stop_revision is None:
960
stop_revision = other.last_revision()
961
### Should this be checking is_ancestor instead of revision_history?
962
if (stop_revision is not None and
963
stop_revision in self.revision_history()):
965
greedy_fetch(to_branch=self, from_branch=other,
966
revision=stop_revision)
967
pullable_revs = self.pullable_revisions(other, stop_revision)
968
if len(pullable_revs) > 0:
969
self.append_revision(*pullable_revs)
971
def pullable_revisions(self, other, stop_revision):
972
"""See Branch.pullable_revisions."""
973
other_revno = other.revision_id_to_revno(stop_revision)
975
return self.missing_revisions(other, other_revno)
976
except DivergedBranches, e:
978
pullable_revs = get_intervening_revisions(self.last_revision(),
980
assert self.last_revision() not in pullable_revs
982
except bzrlib.errors.NotAncestor:
983
if is_ancestor(self.last_revision(), stop_revision, self):
988
def revision_tree(self, revision_id):
989
"""See Branch.revision_tree."""
990
# TODO: refactor this to use an existing revision object
991
# so we don't need to read it in twice.
992
if revision_id == None or revision_id == NULL_REVISION:
995
inv = self.get_revision_inventory(revision_id)
996
return RevisionTree(self.weave_store, inv, revision_id)
998
def basis_tree(self):
999
"""See Branch.basis_tree."""
1001
revision_id = self.revision_history()[-1]
1002
xml = self.working_tree().read_basis_inventory(revision_id)
1003
inv = bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
1004
return RevisionTree(self.weave_store, inv, revision_id)
1005
except (IndexError, NoSuchFile), e:
1006
return self.revision_tree(self.last_revision())
1008
def working_tree(self):
1009
"""See Branch.working_tree."""
1010
from bzrlib.workingtree import WorkingTree
1011
if self._transport.base.find('://') != -1:
1012
raise NoWorkingTree(self.base)
1013
return WorkingTree(self.base, branch=self)
1016
def pull(self, source, overwrite=False):
1017
"""See Branch.pull."""
1020
old_count = len(self.revision_history())
1022
self.update_revisions(source)
1023
except DivergedBranches:
1026
self.set_revision_history(source.revision_history())
1027
new_count = len(self.revision_history())
1028
return new_count - old_count
1032
def get_parent(self):
1033
"""See Branch.get_parent."""
1035
_locs = ['parent', 'pull', 'x-pull']
1038
return self.controlfile(l, 'r').read().strip('\n')
1040
if e.errno != errno.ENOENT:
1044
def get_push_location(self):
1045
"""See Branch.get_push_location."""
1046
config = bzrlib.config.BranchConfig(self)
1047
push_loc = config.get_user_option('push_location')
1050
def set_push_location(self, location):
1051
"""See Branch.set_push_location."""
1052
config = bzrlib.config.LocationConfig(self.base)
1053
config.set_user_option('push_location', location)
1056
def set_parent(self, url):
1057
"""See Branch.set_parent."""
1058
# TODO: Maybe delete old location files?
1059
from bzrlib.atomicfile import AtomicFile
1060
f = AtomicFile(self.controlfilename('parent'))
1067
def tree_config(self):
1068
return TreeConfig(self)
1070
def sign_revision(self, revision_id, gpg_strategy):
1071
"""See Branch.sign_revision."""
1072
plaintext = Testament.from_revision(self, revision_id).as_short_text()
1073
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
1076
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1077
"""See Branch.store_revision_signature."""
1078
self.revision_store.add(StringIO(gpg_strategy.sign(plaintext)),
1082
class ScratchBranch(BzrBranch):
1083
"""Special test class: a branch that cleans up after itself.
1085
>>> b = ScratchBranch()
1089
>>> b._transport.__del__()
1094
def __init__(self, files=[], dirs=[], transport=None):
1095
"""Make a test branch.
1097
This creates a temporary directory and runs init-tree in it.
1099
If any files are listed, they are created in the working copy.
1101
if transport is None:
1102
transport = bzrlib.transport.local.ScratchTransport()
1103
super(ScratchBranch, self).__init__(transport, init=True)
1105
super(ScratchBranch, self).__init__(transport)
1108
self._transport.mkdir(d)
1111
self._transport.put(f, 'content of %s' % f)
1116
>>> orig = ScratchBranch(files=["file1", "file2"])
1117
>>> clone = orig.clone()
1118
>>> if os.name != 'nt':
1119
... os.path.samefile(orig.base, clone.base)
1121
... orig.base == clone.base
1124
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1127
from shutil import copytree
1128
from tempfile import mkdtemp
1131
copytree(self.base, base, symlinks=True)
1132
return ScratchBranch(
1133
transport=bzrlib.transport.local.ScratchTransport(base))
1136
######################################################################
1140
def is_control_file(filename):
1141
## FIXME: better check
1142
filename = os.path.normpath(filename)
1143
while filename != '':
1144
head, tail = os.path.split(filename)
1145
## mutter('check %r for control file' % ((head, tail), ))
1146
if tail == bzrlib.BZRDIR:
1148
if filename == head:
added
removed
bzrlib/branch.py
