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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, compact_date, rand_bytes, \
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sha_file, appendpath, file_kind
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from bzrlib.errors import BzrError, InvalidRevisionNumber, InvalidRevisionId, \
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DivergedBranches, NotBranchError
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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
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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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BZR_BRANCH_FORMAT = "Bazaar-NG branch, format 0.0.4\n"
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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.
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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 _relpath(base, path):
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"""Return path relative to base, or raise exception.
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The path may be either an absolute path or a path relative to the
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current working directory.
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Lifted out of Branch.relpath for ease of testing.
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os.path.commonprefix (python2.4) has a bad bug that it works just
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on string prefixes, assuming that '/u' is a prefix of '/u2'. This
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avoids that problem."""
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rp = os.path.abspath(path)
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while len(head) >= len(base):
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head, tail = os.path.split(head)
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raise NotBranchError("path %r is not within branch %r" % (rp, base))
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def find_branch_root(f=None):
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"""Find the branch root enclosing f, or pwd.
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f may be a filename or a URL.
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It is not necessary that f exists.
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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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elif hasattr(os.path, 'realpath'):
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f = os.path.realpath(f)
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f = os.path.abspath(f)
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if not os.path.exists(f):
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raise BzrError('%r does not exist' % f)
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if os.path.exists(os.path.join(f, bzrlib.BZRDIR)):
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head, tail = os.path.split(f)
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# reached the root, whatever that may be
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raise NotBranchError('%s is not in a branch' % orig_f)
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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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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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if base and (base.startswith('http://') or base.startswith('https://')):
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from bzrlib.remotebranch import RemoteBranch
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return RemoteBranch(base, find_root=False)
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return LocalBranch(base, find_root=False)
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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, containing url (search upwards for the root)
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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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if url and (url.startswith('http://') or url.startswith('https://')):
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from bzrlib.remotebranch import RemoteBranch
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return RemoteBranch(url)
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return LocalBranch(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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if base and (base.startswith('http://') or base.startswith('https://')):
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from bzrlib.remotebranch import RemoteBranch
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return RemoteBranch(base, init=True)
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return LocalBranch(base, init=True)
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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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class LocalBranch(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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def __init__(self, base, init=False, find_root=True):
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"""Create new branch object at a particular location.
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base -- Base directory for the branch. May be a file:// url.
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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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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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find_root -- If true and init is false, find the root of the
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existing branch containing base.
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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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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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from bzrlib.store import ImmutableStore
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self.base = os.path.realpath(base)
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self.base = find_branch_root(base)
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if base.startswith("file://"):
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self.base = os.path.realpath(base)
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if not isdir(self.controlfilename('.')):
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raise NotBranchError("not a bzr branch: %s" % quotefn(base),
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['use "bzr init" to initialize a new working tree',
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'current bzr can only operate from top-of-tree'])
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self.text_store = ImmutableStore(self.controlfilename('text-store'))
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self.revision_store = ImmutableStore(self.controlfilename('revision-store'))
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self.inventory_store = ImmutableStore(self.controlfilename('inventory-store'))
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return '%s(%r)' % (self.__class__.__name__, self.base)
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if self._lock_mode or self._lock:
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from bzrlib.warnings import warn
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warn("branch %r was not explicitly unlocked" % self)
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raise NotImplementedError('get_transaction is abstract')
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def lock_write(self):
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if self._lock_mode != 'w':
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from bzrlib.errors import LockError
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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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from bzrlib.lock import WriteLock
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self._lock = WriteLock(self.controlfilename('branch-lock'))
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self._lock_mode = 'w'
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raise NotImplementedError('lock_write is abstract')
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def lock_read(self):
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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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from bzrlib.lock import ReadLock
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raise NotImplementedError('lock_read is abstract')
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self._lock = ReadLock(self.controlfilename('branch-lock'))
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self._lock_mode = 'r'
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def unlock(self):
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if not self._lock_mode:
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from bzrlib.errors import LockError
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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._lock_mode = self._lock_count = None
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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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return os.path.join(self.base, name)
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def relpath(self, path):
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"""Return path relative to this branch of something inside it.
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Raises an error if path is not in this branch."""
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return _relpath(self.base, path)
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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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if isinstance(file_or_path, basestring):
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file_or_path = [file_or_path]
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return os.path.join(self.base, bzrlib.BZRDIR, *file_or_path)
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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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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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fn = self.controlfilename(file_or_path)
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if mode == 'rb' or mode == 'wb':
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return file(fn, mode)
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elif mode == 'r' or mode == 'w':
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# open in binary mode anyhow so there's no newline translation;
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# codecs uses line buffering by default; don't want that.
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return codecs.open(fn, mode + 'b', 'utf-8',
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raise BzrError("invalid controlfile mode %r" % mode)
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def _make_control(self):
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from bzrlib.inventory import Inventory
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os.mkdir(self.controlfilename([]))
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self.controlfile('README', 'w').write(
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"This is a Bazaar-NG control directory.\n"
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"Do not change any files in this directory.\n")
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self.controlfile('branch-format', 'w').write(BZR_BRANCH_FORMAT)
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for d in ('text-store', 'inventory-store', 'revision-store'):
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os.mkdir(self.controlfilename(d))
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for f in ('revision-history', 'merged-patches',
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'pending-merged-patches', 'branch-name',
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self.controlfile(f, 'w').write('')
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mutter('created control directory in ' + self.base)
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# if we want per-tree root ids then this is the place to set
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# them; they're not needed for now and so ommitted for
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f = self.controlfile('inventory','w')
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bzrlib.xml.serializer_v4.write_inventory(Inventory(), f)
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def _check_format(self):
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"""Check this branch format is supported.
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The current tool only supports the current unstable format.
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In the future, we might need different in-memory Branch
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classes to support downlevel branches. But not yet.
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# This ignores newlines so that we can open branches created
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# on Windows from Linux and so on. I think it might be better
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# to always make all internal files in unix format.
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fmt = self.controlfile('branch-format', 'r').read()
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fmt = fmt.replace('\r\n', '\n')
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if fmt != BZR_BRANCH_FORMAT:
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raise BzrError('sorry, branch format %r not supported' % fmt,
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['use a different bzr version',
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'or remove the .bzr directory and "bzr init" again'])
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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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inv = self.read_working_inventory()
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return inv.root.file_id
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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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inv = self.read_working_inventory()
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orig_root_id = inv.root.file_id
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del inv._byid[inv.root.file_id]
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inv.root.file_id = file_id
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inv._byid[inv.root.file_id] = inv.root
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if entry.parent_id in (None, orig_root_id):
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entry.parent_id = inv.root.file_id
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self._write_inventory(inv)
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def read_working_inventory(self):
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"""Read the working inventory."""
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from bzrlib.inventory import Inventory
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# ElementTree does its own conversion from UTF-8, so open in
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f = self.controlfile('inventory', 'rb')
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return bzrlib.xml.serializer_v4.read_inventory(f)
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def _write_inventory(self, inv):
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"""Update the working inventory.
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That is to say, the inventory describing changes underway, that
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will be committed to the next revision.
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from bzrlib.atomicfile import AtomicFile
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f = AtomicFile(self.controlfilename('inventory'), 'wb')
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bzrlib.xml.serializer_v4.write_inventory(inv, f)
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mutter('wrote working inventory')
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inventory = property(read_working_inventory, _write_inventory, None,
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"""Inventory for the working copy.""")
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def add(self, files, ids=None):
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"""Make files versioned.
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Note that the command line normally calls smart_add instead,
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which can automatically recurse.
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This puts the files in the Added state, so that they will be
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recorded by the next commit.
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List of paths to add, relative to the base of the tree.
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If set, use these instead of automatically generated ids.
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Must be the same length as the list of files, but may
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contain None for ids that are to be autogenerated.
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TODO: Perhaps have an option to add the ids even if the files do
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TODO: Perhaps yield the ids and paths as they're added.
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# TODO: Re-adding a file that is removed in the working copy
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# should probably put it back with the previous ID.
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if isinstance(files, basestring):
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assert(ids is None or isinstance(ids, basestring))
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ids = [None] * len(files)
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assert(len(ids) == len(files))
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inv = self.read_working_inventory()
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for f,file_id in zip(files, ids):
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if is_control_file(f):
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raise BzrError("cannot add control file %s" % quotefn(f))
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raise BzrError("cannot add top-level %r" % f)
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fullpath = os.path.normpath(self.abspath(f))
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kind = file_kind(fullpath)
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# maybe something better?
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raise BzrError('cannot add: not a regular file or directory: %s' % quotefn(f))
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if kind != 'file' and kind != 'directory':
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raise BzrError('cannot add: not a regular file or directory: %s' % quotefn(f))
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file_id = gen_file_id(f)
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inv.add_path(f, kind=kind, file_id=file_id)
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mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
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self._write_inventory(inv)
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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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tree = self.revision_tree(self.get_rev_id(revno))
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# use inventory as it was in that revision
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file_id = tree.inventory.path2id(file)
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raise BzrError("%r is not present in revision %s" % (file, revno))
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tree.print_file(file_id)
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def remove(self, files, verbose=False):
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"""Mark nominated files for removal from the inventory.
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This does not remove their text. This does not run on
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TODO: Refuse to remove modified files unless --force is given?
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TODO: Do something useful with directories.
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TODO: Should this remove the text or not? Tough call; not
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removing may be useful and the user can just use use rm, and
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is the opposite of add. Removing it is consistent with most
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other tools. Maybe an option.
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## TODO: Normalize names
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## TODO: Remove nested loops; better scalability
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if isinstance(files, basestring):
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tree = self.working_tree()
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# do this before any modifications
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raise BzrError("cannot remove unversioned file %s" % quotefn(f))
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mutter("remove inventory entry %s {%s}" % (quotefn(f), fid))
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# having remove it, it must be either ignored or unknown
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if tree.is_ignored(f):
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show_status(new_status, inv[fid].kind, quotefn(f))
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self._write_inventory(inv)
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# FIXME: this doesn't need to be a branch method
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def set_inventory(self, new_inventory_list):
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from bzrlib.inventory import Inventory, InventoryEntry
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inv = Inventory(self.get_root_id())
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for path, file_id, parent, kind in new_inventory_list:
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name = os.path.basename(path)
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inv.add(InventoryEntry(file_id, name, kind, parent))
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self._write_inventory(inv)
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"""Return all unknown files.
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These are files in the working directory that are not versioned or
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control files or ignored.
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>>> b = ScratchBranch(files=['foo', 'foo~'])
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>>> list(b.unknowns())
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>>> list(b.unknowns())
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>>> list(b.unknowns())
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return self.working_tree().unknowns()
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raise NotImplementedError('print_file is abstract')
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def append_revision(self, *revision_ids):
573
from bzrlib.atomicfile import AtomicFile
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for revision_id in revision_ids:
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mutter("add {%s} to revision-history" % revision_id)
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rev_history = self.revision_history()
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rev_history.extend(revision_ids)
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f = AtomicFile(self.controlfilename('revision-history'))
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for rev_id in rev_history:
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def get_revision_xml_file(self, revision_id):
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"""Return XML file object for revision object."""
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if not revision_id or not isinstance(revision_id, basestring):
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raise InvalidRevisionId(revision_id)
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return self.revision_store[revision_id]
599
except (IndexError, KeyError):
600
raise bzrlib.errors.NoSuchRevision(self, revision_id)
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get_revision_xml = get_revision_xml_file
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raise NotImplementedError('append_revision is abstract')
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def set_revision_history(self, rev_history):
247
raise NotImplementedError('set_revision_history is abstract')
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def has_revision(self, revision_id):
250
"""True if this branch has a copy of the revision.
252
This does not necessarily imply the revision is merge
253
or on the mainline."""
254
raise NotImplementedError('has_revision is abstract')
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def get_revision_xml(self, revision_id):
257
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"""
611
xml_file = self.get_revision_xml_file(revision_id)
614
r = bzrlib.xml.serializer_v4.read_revision(xml_file)
615
except SyntaxError, e:
616
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
620
assert r.revision_id == revision_id
261
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.
643
282
return compare_trees(old_tree, new_tree)
647
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def get_revision_sha1(self, revision_id):
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285
"""Hash the stored value of a revision, and return it."""
649
# In the future, revision entries will be signed. At that
650
# point, it is probably best *not* to include the signature
651
# in the revision hash. Because that lets you re-sign
652
# the revision, (add signatures/remove signatures) and still
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# have all hash pointers stay consistent.
654
# But for now, just hash the contents.
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return bzrlib.osutils.sha_file(self.get_revision_xml(revision_id))
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def get_inventory(self, inventory_id):
659
"""Get Inventory object by hash.
661
TODO: Perhaps for this and similar methods, take a revision
662
parameter which can be either an integer revno or a
664
from bzrlib.inventory import Inventory
666
f = self.get_inventory_xml_file(inventory_id)
667
return bzrlib.xml.serializer_v4.read_inventory(f)
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def get_inventory_xml(self, inventory_id):
286
raise NotImplementedError('get_revision_sha1 is abstract')
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def get_ancestry(self, revision_id):
289
"""Return a list of revision-ids integrated by a revision.
291
This currently returns a list, but the ordering is not guaranteed:
294
raise NotImplementedError('get_ancestry is abstract')
296
def get_inventory(self, revision_id):
297
"""Get Inventory object by hash."""
298
raise NotImplementedError('get_inventory is abstract')
300
def get_inventory_xml(self, revision_id):
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301
"""Get inventory XML as a file object."""
672
return self.inventory_store[inventory_id]
674
get_inventory_xml_file = get_inventory_xml
677
def get_inventory_sha1(self, inventory_id):
678
"""Return the sha1 hash of the inventory entry
680
return sha_file(self.get_inventory_xml(inventory_id))
302
raise NotImplementedError('get_inventory_xml is abstract')
304
def get_inventory_sha1(self, revision_id):
305
"""Return the sha1 hash of the inventory entry."""
306
raise NotImplementedError('get_inventory_sha1 is abstract')
683
308
def get_revision_inventory(self, revision_id):
684
309
"""Return inventory of a past revision."""
685
# bzr 0.0.6 imposes the constraint that the inventory_id
686
# must be the same as its revision, so this is trivial.
687
if revision_id == None:
688
from bzrlib.inventory import Inventory
689
return Inventory(self.get_root_id())
691
return self.get_inventory(revision_id)
310
raise NotImplementedError('get_revision_inventory is abstract')
694
312
def revision_history(self):
695
"""Return sequence of revision hashes on to this branch.
697
>>> ScratchBranch().revision_history()
702
return [l.rstrip('\r\n') for l in
703
self.controlfile('revision-history', 'r').readlines()]
708
def common_ancestor(self, other, self_revno=None, other_revno=None):
710
>>> from bzrlib.commit import commit
711
>>> sb = ScratchBranch(files=['foo', 'foo~'])
712
>>> sb.common_ancestor(sb) == (None, None)
714
>>> commit(sb, "Committing first revision", verbose=False)
715
>>> sb.common_ancestor(sb)[0]
717
>>> clone = sb.clone()
718
>>> commit(sb, "Committing second revision", verbose=False)
719
>>> sb.common_ancestor(sb)[0]
721
>>> sb.common_ancestor(clone)[0]
723
>>> commit(clone, "Committing divergent second revision",
725
>>> sb.common_ancestor(clone)[0]
727
>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
729
>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
731
>>> clone2 = sb.clone()
732
>>> sb.common_ancestor(clone2)[0]
734
>>> sb.common_ancestor(clone2, self_revno=1)[0]
736
>>> sb.common_ancestor(clone2, other_revno=1)[0]
739
my_history = self.revision_history()
740
other_history = other.revision_history()
741
if self_revno is None:
742
self_revno = len(my_history)
743
if other_revno is None:
744
other_revno = len(other_history)
745
indices = range(min((self_revno, other_revno)))
748
if my_history[r] == other_history[r]:
749
return r+1, my_history[r]
313
"""Return sequence of revision hashes on to this branch."""
314
raise NotImplementedError('revision_history is abstract')
754
317
"""Return current revision number for this branch.
1203
481
if revno < 1 or revno > self.revno():
1204
482
raise InvalidRevisionNumber(revno)
1210
class ScratchBranch(LocalBranch):
484
def sign_revision(self, revision_id, gpg_strategy):
485
raise NotImplementedError('sign_revision is abstract')
487
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
488
raise NotImplementedError('store_revision_signature is abstract')
490
class BzrBranch(Branch):
491
"""A branch stored in the actual filesystem.
493
Note that it's "local" in the context of the filesystem; it doesn't
494
really matter if it's on an nfs/smb/afs/coda/... share, as long as
495
it's writable, and can be accessed via the normal filesystem API.
501
If _lock_mode is true, a positive count of the number of times the
505
Lock object from bzrlib.lock.
507
# We actually expect this class to be somewhat short-lived; part of its
508
# purpose is to try to isolate what bits of the branch logic are tied to
509
# filesystem access, so that in a later step, we can extricate them to
510
# a separarte ("storage") class.
514
_inventory_weave = None
516
# Map some sort of prefix into a namespace
517
# stuff like "revno:10", "revid:", etc.
518
# This should match a prefix with a function which accepts
519
REVISION_NAMESPACES = {}
521
def push_stores(self, branch_to):
522
"""See Branch.push_stores."""
523
if (self._branch_format != branch_to._branch_format
524
or self._branch_format != 4):
525
from bzrlib.fetch import greedy_fetch
526
mutter("falling back to fetch logic to push between %s(%s) and %s(%s)",
527
self, self._branch_format, branch_to, branch_to._branch_format)
528
greedy_fetch(to_branch=branch_to, from_branch=self,
529
revision=self.last_revision())
532
store_pairs = ((self.text_store, branch_to.text_store),
533
(self.inventory_store, branch_to.inventory_store),
534
(self.revision_store, branch_to.revision_store))
536
for from_store, to_store in store_pairs:
537
copy_all(from_store, to_store)
538
except UnlistableStore:
539
raise UnlistableBranch(from_store)
541
def __init__(self, transport, init=False,
542
relax_version_check=False):
543
"""Create new branch object at a particular location.
545
transport -- A Transport object, defining how to access files.
547
init -- If True, create new control files in a previously
548
unversioned directory. If False, the branch must already
551
relax_version_check -- If true, the usual check for the branch
552
version is not applied. This is intended only for
553
upgrade/recovery type use; it's not guaranteed that
554
all operations will work on old format branches.
556
In the test suite, creation of new trees is tested using the
557
`ScratchBranch` class.
559
assert isinstance(transport, Transport), \
560
"%r is not a Transport" % transport
561
self._transport = transport
564
self._check_format(relax_version_check)
566
def get_store(name, compressed=True, prefixed=False):
567
# FIXME: This approach of assuming stores are all entirely compressed
568
# or entirely uncompressed is tidy, but breaks upgrade from
569
# some existing branches where there's a mixture; we probably
570
# still want the option to look for both.
571
relpath = self._rel_controlfilename(name)
572
store = TextStore(self._transport.clone(relpath),
574
compressed=compressed)
575
#if self._transport.should_cache():
576
# cache_path = os.path.join(self.cache_root, name)
577
# os.mkdir(cache_path)
578
# store = bzrlib.store.CachedStore(store, cache_path)
580
def get_weave(name, prefixed=False):
581
relpath = self._rel_controlfilename(name)
582
ws = WeaveStore(self._transport.clone(relpath), prefixed=prefixed)
583
if self._transport.should_cache():
584
ws.enable_cache = True
587
if self._branch_format == 4:
588
self.inventory_store = get_store(u'inventory-store')
589
self.text_store = get_store(u'text-store')
590
self.revision_store = get_store(u'revision-store')
591
elif self._branch_format == 5:
592
self.control_weaves = get_weave(u'')
593
self.weave_store = get_weave(u'weaves')
594
self.revision_store = get_store(u'revision-store', compressed=False)
595
elif self._branch_format == 6:
596
self.control_weaves = get_weave(u'')
597
self.weave_store = get_weave(u'weaves', prefixed=True)
598
self.revision_store = get_store(u'revision-store', compressed=False,
600
self.revision_store.register_suffix('sig')
601
self._transaction = None
604
return '%s(%r)' % (self.__class__.__name__, self._transport.base)
609
if self._lock_mode or self._lock:
610
# XXX: This should show something every time, and be suitable for
611
# headless operation and embedding
612
warn("branch %r was not explicitly unlocked" % self)
615
# TODO: It might be best to do this somewhere else,
616
# but it is nice for a Branch object to automatically
617
# cache it's information.
618
# Alternatively, we could have the Transport objects cache requests
619
# See the earlier discussion about how major objects (like Branch)
620
# should never expect their __del__ function to run.
621
if hasattr(self, 'cache_root') and self.cache_root is not None:
623
shutil.rmtree(self.cache_root)
626
self.cache_root = None
630
return self._transport.base
633
base = property(_get_base, doc="The URL for the root of this branch.")
635
def _finish_transaction(self):
636
"""Exit the current transaction."""
637
if self._transaction is None:
638
raise errors.LockError('Branch %s is not in a transaction' %
640
transaction = self._transaction
641
self._transaction = None
644
def get_transaction(self):
645
"""See Branch.get_transaction."""
646
if self._transaction is None:
647
return transactions.PassThroughTransaction()
649
return self._transaction
651
def _set_transaction(self, new_transaction):
652
"""Set a new active transaction."""
653
if self._transaction is not None:
654
raise errors.LockError('Branch %s is in a transaction already.' %
656
self._transaction = new_transaction
658
def lock_write(self):
659
mutter("lock write: %s (%s)", self, self._lock_count)
660
# TODO: Upgrade locking to support using a Transport,
661
# and potentially a remote locking protocol
663
if self._lock_mode != 'w':
664
raise LockError("can't upgrade to a write lock from %r" %
666
self._lock_count += 1
668
self._lock = self._transport.lock_write(
669
self._rel_controlfilename('branch-lock'))
670
self._lock_mode = 'w'
672
self._set_transaction(transactions.PassThroughTransaction())
675
mutter("lock read: %s (%s)", self, self._lock_count)
677
assert self._lock_mode in ('r', 'w'), \
678
"invalid lock mode %r" % self._lock_mode
679
self._lock_count += 1
681
self._lock = self._transport.lock_read(
682
self._rel_controlfilename('branch-lock'))
683
self._lock_mode = 'r'
685
self._set_transaction(transactions.ReadOnlyTransaction())
686
# 5K may be excessive, but hey, its a knob.
687
self.get_transaction().set_cache_size(5000)
690
mutter("unlock: %s (%s)", self, self._lock_count)
691
if not self._lock_mode:
692
raise LockError('branch %r is not locked' % (self))
694
if self._lock_count > 1:
695
self._lock_count -= 1
697
self._finish_transaction()
700
self._lock_mode = self._lock_count = None
702
def abspath(self, name):
703
"""See Branch.abspath."""
704
return self._transport.abspath(name)
706
def _rel_controlfilename(self, file_or_path):
707
if not isinstance(file_or_path, basestring):
708
file_or_path = u'/'.join(file_or_path)
709
if file_or_path == '':
711
return bzrlib.transport.urlescape(bzrlib.BZRDIR + u'/' + file_or_path)
713
def controlfilename(self, file_or_path):
714
"""See Branch.controlfilename."""
715
return self._transport.abspath(self._rel_controlfilename(file_or_path))
717
def controlfile(self, file_or_path, mode='r'):
718
"""See Branch.controlfile."""
721
relpath = self._rel_controlfilename(file_or_path)
722
#TODO: codecs.open() buffers linewise, so it was overloaded with
723
# a much larger buffer, do we need to do the same for getreader/getwriter?
725
return self._transport.get(relpath)
727
raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
729
# XXX: Do we really want errors='replace'? Perhaps it should be
730
# an error, or at least reported, if there's incorrectly-encoded
731
# data inside a file.
732
# <https://launchpad.net/products/bzr/+bug/3823>
733
return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
735
raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
737
raise BzrError("invalid controlfile mode %r" % mode)
739
def put_controlfile(self, path, f, encode=True):
740
"""See Branch.put_controlfile."""
741
self.put_controlfiles([(path, f)], encode=encode)
743
def put_controlfiles(self, files, encode=True):
744
"""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):
1211
1083
"""Special test class: a branch that cleans up after itself.
1213
1085
>>> b = ScratchBranch()
1214
1086
>>> isdir(b.base)
1216
1088
>>> bd = b.base
1089
>>> b._transport.__del__()
1221
def __init__(self, files=[], dirs=[], base=None):
1094
def __init__(self, files=[], dirs=[], transport=None):
1222
1095
"""Make a test branch.
1224
1097
This creates a temporary directory and runs init-tree in it.
1226
1099
If any files are listed, they are created in the working copy.
1228
from tempfile import mkdtemp
1233
LocalBranch.__init__(self, base, init=init)
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)
1235
os.mkdir(self.abspath(d))
1108
self._transport.mkdir(d)
1237
1110
for f in files:
1238
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
1111
self._transport.put(f, 'content of %s' % f)
1241
1114
def clone(self):
1243
1116
>>> orig = ScratchBranch(files=["file1", "file2"])
1244
1117
>>> clone = orig.clone()
1245
>>> os.path.samefile(orig.base, clone.base)
1118
>>> if os.name != 'nt':
1119
... os.path.samefile(orig.base, clone.base)
1121
... orig.base == clone.base
1247
1124
>>> os.path.isfile(os.path.join(clone.base, "file1"))