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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 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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from bzrlib.textui import show_status
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from bzrlib.revision import Revision
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from bzrlib.xml import unpack_xml
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from bzrlib.delta import compare_trees
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from bzrlib.tree import EmptyTree, RevisionTree
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BZR_BRANCH_FORMAT = "Bazaar-NG branch, format 0.0.4\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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def find_branch(f, **args):
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if f and (f.startswith('http://') or f.startswith('https://')):
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return remotebranch.RemoteBranch(f, **args)
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return Branch(f, **args)
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def find_cached_branch(f, cache_root, **args):
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from remotebranch import RemoteBranch
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br = find_branch(f, **args)
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def cacheify(br, store_name):
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from meta_store import CachedStore
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cache_path = os.path.join(cache_root, store_name)
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new_store = CachedStore(getattr(br, store_name), cache_path)
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setattr(br, store_name, new_store)
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if isinstance(br, RemoteBranch):
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cacheify(br, 'inventory_store')
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cacheify(br, 'text_store')
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cacheify(br, 'revision_store')
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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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from errors import NotBranchError
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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."""
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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 BzrError('%r is not in a branch' % orig_f)
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class DivergedBranches(Exception):
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def __init__(self, branch1, branch2):
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self.branch1 = branch1
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self.branch2 = branch2
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Exception.__init__(self, "These branches have diverged.")
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class NoSuchRevision(BzrError):
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def __init__(self, branch, revision):
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self.revision = revision
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msg = "Branch %s has no revision %d" % (branch, revision)
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BzrError.__init__(self, msg)
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######################################################################
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class Branch(object):
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"""Branch holding a history of revisions.
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Base directory of the branch.
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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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# 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 __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.
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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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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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self.base = os.path.realpath(base)
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if not isdir(self.controlfilename('.')):
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from errors import NotBranchError
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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 warnings import warn
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warn("branch %r was not explicitly unlocked" % self)
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def lock_write(self):
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if self._lock_mode != 'w':
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from 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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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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self._lock = ReadLock(self.controlfilename('branch-lock'))
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self._lock_mode = 'r'
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if not self._lock_mode:
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from 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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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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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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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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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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from bzrlib.xml import pack_xml
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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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pack_xml(Inventory(gen_root_id()), self.controlfile('inventory','w'))
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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.replace('\r\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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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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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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from bzrlib.xml import unpack_xml
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from time import time
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# ElementTree does its own conversion from UTF-8, so open in
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inv = unpack_xml(Inventory,
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self.controlfile('inventory', 'rb'))
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mutter("loaded inventory of %d items in %f"
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% (len(inv), time() - before))
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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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from bzrlib.xml import pack_xml
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f = AtomicFile(self.controlfilename('inventory'), 'wb')
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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, verbose=False, 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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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 return the ids of the files? But then again it
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is easy to retrieve them if they're needed.
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TODO: Adding a directory should optionally recurse down and
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add all non-ignored children. Perhaps do that in a
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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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print 'added', quotefn(f)
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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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def print_file(self, file, revno):
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"""Print `file` to stdout."""
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tree = self.revision_tree(self.lookup_revision(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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def append_revision(self, *revision_ids):
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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(self, revision_id):
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"""Return XML string 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]
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raise bzrlib.errors.RevisionNotPresent(revision_id)
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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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r = unpack_xml(Revision, self.get_revision_xml(revision_id))
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assert r.revision_id == revision_id
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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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# In the future, revision entries will be signed. At that
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# point, it is probably best *not* to include the signature
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# in the revision hash. Because that lets you re-sign
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# the revision, (add signatures/remove signatures) and still
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# have all hash pointers stay consistent.
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# 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):
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"""Get Inventory object by hash.
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TODO: Perhaps for this and similar methods, take a revision
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parameter which can be either an integer revno or a
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from bzrlib.inventory import Inventory
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from bzrlib.xml import unpack_xml
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return unpack_xml(Inventory, self.inventory_store[inventory_id])
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def get_inventory_sha1(self, inventory_id):
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"""Return the sha1 hash of the inventory entry
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return sha_file(self.inventory_store[inventory_id])
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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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# bzr 0.0.6 imposes the constraint that the inventory_id
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# must be the same as its revision, so this is trivial.
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if revision_id == None:
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from bzrlib.inventory import Inventory
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return Inventory(self.get_root_id())
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return self.get_inventory(revision_id)
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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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>>> ScratchBranch().revision_history()
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return [l.rstrip('\r\n') for l in
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self.controlfile('revision-history', 'r').readlines()]
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def common_ancestor(self, other, self_revno=None, other_revno=None):
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>>> sb = ScratchBranch(files=['foo', 'foo~'])
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>>> sb.common_ancestor(sb) == (None, None)
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>>> commit.commit(sb, "Committing first revision", verbose=False)
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>>> sb.common_ancestor(sb)[0]
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>>> clone = sb.clone()
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>>> commit.commit(sb, "Committing second revision", verbose=False)
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>>> sb.common_ancestor(sb)[0]
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>>> sb.common_ancestor(clone)[0]
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>>> commit.commit(clone, "Committing divergent second revision",
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>>> sb.common_ancestor(clone)[0]
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>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
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>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
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>>> clone2 = sb.clone()
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>>> sb.common_ancestor(clone2)[0]
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>>> sb.common_ancestor(clone2, self_revno=1)[0]
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>>> sb.common_ancestor(clone2, other_revno=1)[0]
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my_history = self.revision_history()
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other_history = other.revision_history()
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if self_revno is None:
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self_revno = len(my_history)
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if other_revno is None:
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other_revno = len(other_history)
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indices = range(min((self_revno, other_revno)))
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if my_history[r] == other_history[r]:
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return r+1, my_history[r]
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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_patch(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):
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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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elif stop_revision > other_len:
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raise 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 all new revisions from other branch.
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>>> from bzrlib.commit import commit
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>>> bzrlib.trace.silent = True
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>>> br1 = ScratchBranch(files=['foo', 'bar'])
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>>> commit(br1, "lala!", rev_id="REVISION-ID-1", verbose=False)
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>>> br2 = ScratchBranch()
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>>> br2.update_revisions(br1)
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>>> br2.revision_history()
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>>> br2.update_revisions(br1)
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>>> br1.text_store.total_size() == br2.text_store.total_size()
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from bzrlib.progress import ProgressBar
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pb.update('comparing histories')
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revision_ids = self.missing_revisions(other, stop_revision)
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if hasattr(other.revision_store, "prefetch"):
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other.revision_store.prefetch(revision_ids)
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if hasattr(other.inventory_store, "prefetch"):
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inventory_ids = [other.get_revision(r).inventory_id
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for r in revision_ids]
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other.inventory_store.prefetch(inventory_ids)
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for rev_id in revision_ids:
845
pb.update('fetching revision', i, len(revision_ids))
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rev = other.get_revision(rev_id)
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revisions.append(rev)
848
inv = other.get_inventory(str(rev.inventory_id))
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for key, entry in inv.iter_entries():
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if entry.text_id is None:
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if entry.text_id not in self.text_store:
853
needed_texts.add(entry.text_id)
857
count = self.text_store.copy_multi(other.text_store, needed_texts)
858
print "Added %d texts." % count
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inventory_ids = [ f.inventory_id for f in revisions ]
860
count = self.inventory_store.copy_multi(other.inventory_store,
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print "Added %d inventories." % count
863
revision_ids = [ f.revision_id for f in revisions]
864
count = self.revision_store.copy_multi(other.revision_store,
866
for revision_id in revision_ids:
867
self.append_revision(revision_id)
868
print "Added %d revisions." % count
871
def commit(self, *args, **kw):
872
from bzrlib.commit import commit
873
commit(self, *args, **kw)
876
def lookup_revision(self, revision):
877
"""Return the revision identifier for a given revision information."""
878
revno, info = self.get_revision_info(revision)
881
def get_revision_info(self, revision):
882
"""Return (revno, revision id) for revision identifier.
884
revision can be an integer, in which case it is assumed to be revno (though
885
this will translate negative values into positive ones)
886
revision can also be a string, in which case it is parsed for something like
887
'date:' or 'revid:' etc.
892
try:# Convert to int if possible
893
revision = int(revision)
896
revs = self.revision_history()
897
if isinstance(revision, int):
900
# Mabye we should do this first, but we don't need it if revision == 0
902
revno = len(revs) + revision + 1
905
elif isinstance(revision, basestring):
906
for prefix, func in Branch.REVISION_NAMESPACES.iteritems():
907
if revision.startswith(prefix):
908
revno = func(self, revs, revision)
911
raise BzrError('No namespace registered for string: %r' % revision)
913
if revno is None or revno <= 0 or revno > len(revs):
914
raise BzrError("no such revision %s" % revision)
915
return revno, revs[revno-1]
917
def _namespace_revno(self, revs, revision):
918
"""Lookup a revision by revision number"""
919
assert revision.startswith('revno:')
921
return int(revision[6:])
924
REVISION_NAMESPACES['revno:'] = _namespace_revno
926
def _namespace_revid(self, revs, revision):
927
assert revision.startswith('revid:')
929
return revs.index(revision[6:]) + 1
932
REVISION_NAMESPACES['revid:'] = _namespace_revid
934
def _namespace_last(self, revs, revision):
935
assert revision.startswith('last:')
937
offset = int(revision[5:])
942
raise BzrError('You must supply a positive value for --revision last:XXX')
943
return len(revs) - offset + 1
944
REVISION_NAMESPACES['last:'] = _namespace_last
946
def _namespace_tag(self, revs, revision):
947
assert revision.startswith('tag:')
948
raise BzrError('tag: namespace registered, but not implemented.')
949
REVISION_NAMESPACES['tag:'] = _namespace_tag
951
def _namespace_date(self, revs, revision):
952
assert revision.startswith('date:')
954
# Spec for date revisions:
956
# value can be 'yesterday', 'today', 'tomorrow' or a YYYY-MM-DD string.
957
# it can also start with a '+/-/='. '+' says match the first
958
# entry after the given date. '-' is match the first entry before the date
959
# '=' is match the first entry after, but still on the given date.
961
# +2005-05-12 says find the first matching entry after May 12th, 2005 at 0:00
962
# -2005-05-12 says find the first matching entry before May 12th, 2005 at 0:00
963
# =2005-05-12 says find the first match after May 12th, 2005 at 0:00 but before
964
# May 13th, 2005 at 0:00
966
# So the proper way of saying 'give me all entries for today' is:
967
# -r {date:+today}:{date:-tomorrow}
968
# The default is '=' when not supplied
971
if val[:1] in ('+', '-', '='):
972
match_style = val[:1]
975
today = datetime.datetime.today().replace(hour=0,minute=0,second=0,microsecond=0)
976
if val.lower() == 'yesterday':
977
dt = today - datetime.timedelta(days=1)
978
elif val.lower() == 'today':
980
elif val.lower() == 'tomorrow':
981
dt = today + datetime.timedelta(days=1)
984
# This should be done outside the function to avoid recompiling it.
985
_date_re = re.compile(
986
r'(?P<date>(?P<year>\d\d\d\d)-(?P<month>\d\d)-(?P<day>\d\d))?'
988
r'(?P<time>(?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d))?)?'
990
m = _date_re.match(val)
991
if not m or (not m.group('date') and not m.group('time')):
992
raise BzrError('Invalid revision date %r' % revision)
995
year, month, day = int(m.group('year')), int(m.group('month')), int(m.group('day'))
997
year, month, day = today.year, today.month, today.day
999
hour = int(m.group('hour'))
1000
minute = int(m.group('minute'))
1001
if m.group('second'):
1002
second = int(m.group('second'))
1006
hour, minute, second = 0,0,0
1008
dt = datetime.datetime(year=year, month=month, day=day,
1009
hour=hour, minute=minute, second=second)
1013
if match_style == '-':
1015
elif match_style == '=':
1016
last = dt + datetime.timedelta(days=1)
1019
for i in range(len(revs)-1, -1, -1):
1020
r = self.get_revision(revs[i])
1021
# TODO: Handle timezone.
1022
dt = datetime.datetime.fromtimestamp(r.timestamp)
1023
if first >= dt and (last is None or dt >= last):
1026
for i in range(len(revs)):
1027
r = self.get_revision(revs[i])
1028
# TODO: Handle timezone.
1029
dt = datetime.datetime.fromtimestamp(r.timestamp)
1030
if first <= dt and (last is None or dt <= last):
1032
REVISION_NAMESPACES['date:'] = _namespace_date
1034
def revision_tree(self, revision_id):
1035
"""Return Tree for a revision on this branch.
1037
`revision_id` may be None for the null revision, in which case
1038
an `EmptyTree` is returned."""
1039
# TODO: refactor this to use an existing revision object
1040
# so we don't need to read it in twice.
1041
if revision_id == None:
1044
inv = self.get_revision_inventory(revision_id)
1045
return RevisionTree(self.text_store, inv)
1048
def working_tree(self):
1049
"""Return a `Tree` for the working copy."""
1050
from workingtree import WorkingTree
1051
return WorkingTree(self.base, self.read_working_inventory())
1054
def basis_tree(self):
1055
"""Return `Tree` object for last revision.
1057
If there are no revisions yet, return an `EmptyTree`.
1059
r = self.last_patch()
1063
return RevisionTree(self.text_store, self.get_revision_inventory(r))
1067
def rename_one(self, from_rel, to_rel):
1070
This can change the directory or the filename or both.
1074
tree = self.working_tree()
1075
inv = tree.inventory
1076
if not tree.has_filename(from_rel):
1077
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
1078
if tree.has_filename(to_rel):
1079
raise BzrError("can't rename: new working file %r already exists" % to_rel)
1081
file_id = inv.path2id(from_rel)
1083
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
1085
if inv.path2id(to_rel):
1086
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
1088
to_dir, to_tail = os.path.split(to_rel)
1089
to_dir_id = inv.path2id(to_dir)
1090
if to_dir_id == None and to_dir != '':
1091
raise BzrError("can't determine destination directory id for %r" % to_dir)
1093
mutter("rename_one:")
1094
mutter(" file_id {%s}" % file_id)
1095
mutter(" from_rel %r" % from_rel)
1096
mutter(" to_rel %r" % to_rel)
1097
mutter(" to_dir %r" % to_dir)
1098
mutter(" to_dir_id {%s}" % to_dir_id)
1100
inv.rename(file_id, to_dir_id, to_tail)
1102
print "%s => %s" % (from_rel, to_rel)
1104
from_abs = self.abspath(from_rel)
1105
to_abs = self.abspath(to_rel)
1107
os.rename(from_abs, to_abs)
1109
raise BzrError("failed to rename %r to %r: %s"
1110
% (from_abs, to_abs, e[1]),
1111
["rename rolled back"])
1113
self._write_inventory(inv)
1118
def move(self, from_paths, to_name):
1121
to_name must exist as a versioned directory.
1123
If to_name exists and is a directory, the files are moved into
1124
it, keeping their old names. If it is a directory,
1126
Note that to_name is only the last component of the new name;
1127
this doesn't change the directory.
1131
## TODO: Option to move IDs only
1132
assert not isinstance(from_paths, basestring)
1133
tree = self.working_tree()
1134
inv = tree.inventory
1135
to_abs = self.abspath(to_name)
1136
if not isdir(to_abs):
1137
raise BzrError("destination %r is not a directory" % to_abs)
1138
if not tree.has_filename(to_name):
1139
raise BzrError("destination %r not in working directory" % to_abs)
1140
to_dir_id = inv.path2id(to_name)
1141
if to_dir_id == None and to_name != '':
1142
raise BzrError("destination %r is not a versioned directory" % to_name)
1143
to_dir_ie = inv[to_dir_id]
1144
if to_dir_ie.kind not in ('directory', 'root_directory'):
1145
raise BzrError("destination %r is not a directory" % to_abs)
1147
to_idpath = inv.get_idpath(to_dir_id)
1149
for f in from_paths:
1150
if not tree.has_filename(f):
1151
raise BzrError("%r does not exist in working tree" % f)
1152
f_id = inv.path2id(f)
1154
raise BzrError("%r is not versioned" % f)
1155
name_tail = splitpath(f)[-1]
1156
dest_path = appendpath(to_name, name_tail)
1157
if tree.has_filename(dest_path):
1158
raise BzrError("destination %r already exists" % dest_path)
1159
if f_id in to_idpath:
1160
raise BzrError("can't move %r to a subdirectory of itself" % f)
1162
# OK, so there's a race here, it's possible that someone will
1163
# create a file in this interval and then the rename might be
1164
# left half-done. But we should have caught most problems.
1166
for f in from_paths:
1167
name_tail = splitpath(f)[-1]
1168
dest_path = appendpath(to_name, name_tail)
1169
print "%s => %s" % (f, dest_path)
1170
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1172
os.rename(self.abspath(f), self.abspath(dest_path))
1174
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1175
["rename rolled back"])
1177
self._write_inventory(inv)
1182
def revert(self, filenames, old_tree=None, backups=True):
1183
"""Restore selected files to the versions from a previous tree.
1186
If true (default) backups are made of files before
1189
from bzrlib.errors import NotVersionedError, BzrError
1190
from bzrlib.atomicfile import AtomicFile
1191
from bzrlib.osutils import backup_file
1193
inv = self.read_working_inventory()
1194
if old_tree is None:
1195
old_tree = self.basis_tree()
1196
old_inv = old_tree.inventory
1199
for fn in filenames:
1200
file_id = inv.path2id(fn)
1202
raise NotVersionedError("not a versioned file", fn)
1203
if not old_inv.has_id(file_id):
1204
raise BzrError("file not present in old tree", fn, file_id)
1205
nids.append((fn, file_id))
1207
# TODO: Rename back if it was previously at a different location
1209
# TODO: If given a directory, restore the entire contents from
1210
# the previous version.
1212
# TODO: Make a backup to a temporary file.
1214
# TODO: If the file previously didn't exist, delete it?
1215
for fn, file_id in nids:
1218
f = AtomicFile(fn, 'wb')
1220
f.write(old_tree.get_file(file_id).read())
1226
def pending_merges(self):
1227
"""Return a list of pending merges.
1229
These are revisions that have been merged into the working
1230
directory but not yet committed.
1232
cfn = self.controlfilename('pending-merges')
1233
if not os.path.exists(cfn):
1236
for l in self.controlfile('pending-merges', 'r').readlines():
1237
p.append(l.rstrip('\n'))
1241
def add_pending_merge(self, revision_id):
1242
from bzrlib.revision import validate_revision_id
1244
validate_revision_id(revision_id)
1246
p = self.pending_merges()
1247
if revision_id in p:
1249
p.append(revision_id)
1250
self.set_pending_merges(p)
1253
def set_pending_merges(self, rev_list):
1254
from bzrlib.atomicfile import AtomicFile
1257
f = AtomicFile(self.controlfilename('pending-merges'))
1269
class ScratchBranch(Branch):
1270
"""Special test class: a branch that cleans up after itself.
1272
>>> b = ScratchBranch()
1280
def __init__(self, files=[], dirs=[], base=None):
1281
"""Make a test branch.
1283
This creates a temporary directory and runs init-tree in it.
1285
If any files are listed, they are created in the working copy.
1287
from tempfile import mkdtemp
1292
Branch.__init__(self, base, init=init)
1294
os.mkdir(self.abspath(d))
1297
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
1302
>>> orig = ScratchBranch(files=["file1", "file2"])
1303
>>> clone = orig.clone()
1304
>>> os.path.samefile(orig.base, clone.base)
1306
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1309
from shutil import copytree
1310
from tempfile import mkdtemp
1313
copytree(self.base, base, symlinks=True)
1314
return ScratchBranch(base=base)
1320
"""Destroy the test branch, removing the scratch directory."""
1321
from shutil import rmtree
1324
mutter("delete ScratchBranch %s" % self.base)
1327
# Work around for shutil.rmtree failing on Windows when
1328
# readonly files are encountered
1329
mutter("hit exception in destroying ScratchBranch: %s" % e)
1330
for root, dirs, files in os.walk(self.base, topdown=False):
1332
os.chmod(os.path.join(root, name), 0700)
1338
######################################################################
1342
def is_control_file(filename):
1343
## FIXME: better check
1344
filename = os.path.normpath(filename)
1345
while filename != '':
1346
head, tail = os.path.split(filename)
1347
## mutter('check %r for control file' % ((head, tail), ))
1348
if tail == bzrlib.BZRDIR:
1350
if filename == head:
1357
def gen_file_id(name):
1358
"""Return new file id.
1360
This should probably generate proper UUIDs, but for the moment we
1361
cope with just randomness because running uuidgen every time is
1364
from binascii import hexlify
1365
from time import time
1367
# get last component
1368
idx = name.rfind('/')
1370
name = name[idx+1 : ]
1371
idx = name.rfind('\\')
1373
name = name[idx+1 : ]
1375
# make it not a hidden file
1376
name = name.lstrip('.')
1378
# remove any wierd characters; we don't escape them but rather
1379
# just pull them out
1380
name = re.sub(r'[^\w.]', '', name)
1382
s = hexlify(rand_bytes(8))
1383
return '-'.join((name, compact_date(time()), s))
1387
"""Return a new tree-root file id."""
1388
return gen_file_id('TREE_ROOT')