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- Committer: Jelmer Vernooij
- Date: 2009-02-12 02:31:01 UTC
- mto: (0.312.1 master) (6883.23.1 bundle-git)
- mto: This revision was merged to the branch mainline in revision 6960.
- Revision ID: jelmer@samba.org-20090212023101-s7vcsvibldg5enz2
Partially fix pull.
- files added:
- .bzrignore
- foreign
- notes
- tests
- files removed:
- .bzrignore
- bzrlib
- bzrlib/selftest
- contrib
- contrib/bash
- contrib/zsh
- doc
- effbot
- effbot/org
- elementtree
- notes
- patches
- plugins
- plugins/changeset
- tools
- urlgrabber
added
removed
bzrlib/branch.py
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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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import sys, os
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import bzrlib
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from bzrlib.trace import mutter, note
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from bzrlib.osutils import isdir, quotefn, compact_date, rand_bytes, splitpath, \
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sha_file, appendpath, file_kind
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from bzrlib.errors import BzrError
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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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def find_branch(f, **args):
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if f and (f.startswith('http://') or f.startswith('https://')):
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import remotebranch
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return remotebranch.RemoteBranch(f, **args)
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else:
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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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os.mkdir(cache_path)
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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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return br
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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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s = []
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head = rp
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while len(head) >= len(base):
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if head == base:
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break
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head, tail = os.path.split(head)
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if tail:
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s.insert(0, tail)
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else:
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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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return os.sep.join(s)
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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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if f == None:
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f = os.getcwd()
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elif hasattr(os.path, 'realpath'):
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f = os.path.realpath(f)
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else:
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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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orig_f = f
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while True:
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if os.path.exists(os.path.join(f, bzrlib.BZRDIR)):
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return f
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head, tail = os.path.split(f)
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if head == 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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f = head
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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.branch = branch
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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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# branch objects
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class Branch(object):
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"""Branch holding a history of revisions.
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base
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Base directory of the branch.
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_lock_mode
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None, or 'r' or 'w'
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_lock_count
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If _lock_mode is true, a positive count of the number of times the
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lock has been taken.
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_lock
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Lock object from bzrlib.lock.
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"""
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base = None
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_lock_mode = None
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_lock_count = None
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_lock = None
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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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be versioned.
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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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"""
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from bzrlib.store import ImmutableStore
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if init:
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self.base = os.path.realpath(base)
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self._make_control()
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elif find_root:
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self.base = find_branch_root(base)
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else:
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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._check_format()
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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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def __str__(self):
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return '%s(%r)' % (self.__class__.__name__, self.base)
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__repr__ = __str__
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def __del__(self):
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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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self._lock.unlock()
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def lock_write(self):
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if self._lock_mode:
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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_mode)
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self._lock_count += 1
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else:
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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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self._lock_count = 1
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def lock_read(self):
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if self._lock_mode:
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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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else:
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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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self._lock_count = 1
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def unlock(self):
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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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else:
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self._lock.unlock()
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self._lock = None
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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."""
260
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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"""
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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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import codecs
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return codecs.open(fn, mode + 'b', 'utf-8',
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buffering=60000)
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else:
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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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'branch-lock',
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'pending-merges'):
307
self.controlfile(f, 'w').write('')
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mutter('created control directory in ' + self.base)
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pack_xml(Inventory(), self.controlfile('inventory','w'))
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def _check_format(self):
314
"""Check this branch format is supported.
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The current tool only supports the current unstable format.
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318
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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"""
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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 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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before = time()
339
self.lock_read()
340
try:
341
# ElementTree does its own conversion from UTF-8, so open in
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# binary.
343
inv = unpack_xml(Inventory,
344
self.controlfile('inventory', 'rb'))
345
mutter("loaded inventory of %d items in %f"
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% (len(inv), time() - before))
347
return inv
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finally:
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self.unlock()
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351
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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.
357
"""
358
from bzrlib.atomicfile import AtomicFile
359
from bzrlib.xml import pack_xml
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361
self.lock_write()
362
try:
363
f = AtomicFile(self.controlfilename('inventory'), 'wb')
364
try:
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pack_xml(inv, f)
366
f.commit()
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finally:
368
f.close()
369
finally:
370
self.unlock()
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mutter('wrote working inventory')
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374
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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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378
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def add(self, files, verbose=False, ids=None):
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"""Make files versioned.
381
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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.
386
387
files
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List of paths to add, relative to the base of the tree.
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ids
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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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not (yet) exist.
397
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TODO: Perhaps return the ids of the files? But then again it
399
is easy to retrieve them if they're needed.
400
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TODO: Adding a directory should optionally recurse down and
402
add all non-ignored children. Perhaps do that in a
403
higher-level method.
404
"""
405
from bzrlib.textui import show_status
406
# TODO: Re-adding a file that is removed in the working copy
407
# should probably put it back with the previous ID.
408
if isinstance(files, basestring):
409
assert(ids is None or isinstance(ids, basestring))
410
files = [files]
411
if ids is not None:
412
ids = [ids]
413
414
if ids is None:
415
ids = [None] * len(files)
416
else:
417
assert(len(ids) == len(files))
418
419
self.lock_write()
420
try:
421
inv = self.read_working_inventory()
422
for f,file_id in zip(files, ids):
423
if is_control_file(f):
424
raise BzrError("cannot add control file %s" % quotefn(f))
425
426
fp = splitpath(f)
427
428
if len(fp) == 0:
429
raise BzrError("cannot add top-level %r" % f)
430
431
fullpath = os.path.normpath(self.abspath(f))
432
433
try:
434
kind = file_kind(fullpath)
435
except OSError:
436
# maybe something better?
437
raise BzrError('cannot add: not a regular file or directory: %s' % quotefn(f))
438
439
if kind != 'file' and kind != 'directory':
440
raise BzrError('cannot add: not a regular file or directory: %s' % quotefn(f))
441
442
if file_id is None:
443
file_id = gen_file_id(f)
444
inv.add_path(f, kind=kind, file_id=file_id)
445
446
if verbose:
447
print 'added', quotefn(f)
448
449
mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
450
451
self._write_inventory(inv)
452
finally:
453
self.unlock()
454
455
456
def print_file(self, file, revno):
457
"""Print `file` to stdout."""
458
self.lock_read()
459
try:
460
tree = self.revision_tree(self.lookup_revision(revno))
461
# use inventory as it was in that revision
462
file_id = tree.inventory.path2id(file)
463
if not file_id:
464
raise BzrError("%r is not present in revision %d" % (file, revno))
465
tree.print_file(file_id)
466
finally:
467
self.unlock()
468
469
470
def remove(self, files, verbose=False):
471
"""Mark nominated files for removal from the inventory.
472
473
This does not remove their text. This does not run on
474
475
TODO: Refuse to remove modified files unless --force is given?
476
477
TODO: Do something useful with directories.
478
479
TODO: Should this remove the text or not? Tough call; not
480
removing may be useful and the user can just use use rm, and
481
is the opposite of add. Removing it is consistent with most
482
other tools. Maybe an option.
483
"""
484
from bzrlib.textui import show_status
485
## TODO: Normalize names
486
## TODO: Remove nested loops; better scalability
487
if isinstance(files, basestring):
488
files = [files]
489
490
self.lock_write()
491
492
try:
493
tree = self.working_tree()
494
inv = tree.inventory
495
496
# do this before any modifications
497
for f in files:
498
fid = inv.path2id(f)
499
if not fid:
500
raise BzrError("cannot remove unversioned file %s" % quotefn(f))
501
mutter("remove inventory entry %s {%s}" % (quotefn(f), fid))
502
if verbose:
503
# having remove it, it must be either ignored or unknown
504
if tree.is_ignored(f):
505
new_status = 'I'
506
else:
507
new_status = '?'
508
show_status(new_status, inv[fid].kind, quotefn(f))
509
del inv[fid]
510
511
self._write_inventory(inv)
512
finally:
513
self.unlock()
514
515
516
# FIXME: this doesn't need to be a branch method
517
def set_inventory(self, new_inventory_list):
518
from bzrlib.inventory import Inventory, InventoryEntry
519
inv = Inventory()
520
for path, file_id, parent, kind in new_inventory_list:
521
name = os.path.basename(path)
522
if name == "":
523
continue
524
inv.add(InventoryEntry(file_id, name, kind, parent))
525
self._write_inventory(inv)
526
527
528
def unknowns(self):
529
"""Return all unknown files.
530
531
These are files in the working directory that are not versioned or
532
control files or ignored.
533
534
>>> b = ScratchBranch(files=['foo', 'foo~'])
535
>>> list(b.unknowns())
536
['foo']
537
>>> b.add('foo')
538
>>> list(b.unknowns())
539
[]
540
>>> b.remove('foo')
541
>>> list(b.unknowns())
542
['foo']
543
"""
544
return self.working_tree().unknowns()
545
546
547
def append_revision(self, revision_id):
548
from bzrlib.atomicfile import AtomicFile
549
550
mutter("add {%s} to revision-history" % revision_id)
551
rev_history = self.revision_history() + [revision_id]
552
553
f = AtomicFile(self.controlfilename('revision-history'))
554
try:
555
for rev_id in rev_history:
556
print >>f, rev_id
557
f.commit()
558
finally:
559
f.close()
560
561
562
def get_revision(self, revision_id):
563
"""Return the Revision object for a named revision"""
564
from bzrlib.revision import Revision
565
from bzrlib.xml import unpack_xml
566
567
self.lock_read()
568
try:
569
if not revision_id or not isinstance(revision_id, basestring):
570
raise ValueError('invalid revision-id: %r' % revision_id)
571
r = unpack_xml(Revision, self.revision_store[revision_id])
572
finally:
573
self.unlock()
574
575
assert r.revision_id == revision_id
576
return r
577
578
579
def get_revision_sha1(self, revision_id):
580
"""Hash the stored value of a revision, and return it."""
581
# In the future, revision entries will be signed. At that
582
# point, it is probably best *not* to include the signature
583
# in the revision hash. Because that lets you re-sign
584
# the revision, (add signatures/remove signatures) and still
585
# have all hash pointers stay consistent.
586
# But for now, just hash the contents.
587
return sha_file(self.revision_store[revision_id])
588
589
590
def get_inventory(self, inventory_id):
591
"""Get Inventory object by hash.
592
593
TODO: Perhaps for this and similar methods, take a revision
594
parameter which can be either an integer revno or a
595
string hash."""
596
from bzrlib.inventory import Inventory
597
from bzrlib.xml import unpack_xml
598
599
return unpack_xml(Inventory, self.inventory_store[inventory_id])
600
601
602
def get_inventory_sha1(self, inventory_id):
603
"""Return the sha1 hash of the inventory entry
604
"""
605
return sha_file(self.inventory_store[inventory_id])
606
607
608
def get_revision_inventory(self, revision_id):
609
"""Return inventory of a past revision."""
610
# bzr 0.0.6 imposes the constraint that the inventory_id
611
# must be the same as its revision, so this is trivial.
612
if revision_id == None:
613
from bzrlib.inventory import Inventory
614
return Inventory()
615
else:
616
return self.get_inventory(revision_id)
617
618
619
def revision_history(self):
620
"""Return sequence of revision hashes on to this branch.
621
622
>>> ScratchBranch().revision_history()
623
[]
624
"""
625
self.lock_read()
626
try:
627
return [l.rstrip('\r\n') for l in
628
self.controlfile('revision-history', 'r').readlines()]
629
finally:
630
self.unlock()
631
632
633
def common_ancestor(self, other, self_revno=None, other_revno=None):
634
"""
635
>>> import commit
636
>>> sb = ScratchBranch(files=['foo', 'foo~'])
637
>>> sb.common_ancestor(sb) == (None, None)
638
True
639
>>> commit.commit(sb, "Committing first revision", verbose=False)
640
>>> sb.common_ancestor(sb)[0]
641
1
642
>>> clone = sb.clone()
643
>>> commit.commit(sb, "Committing second revision", verbose=False)
644
>>> sb.common_ancestor(sb)[0]
645
2
646
>>> sb.common_ancestor(clone)[0]
647
1
648
>>> commit.commit(clone, "Committing divergent second revision",
649
... verbose=False)
650
>>> sb.common_ancestor(clone)[0]
651
1
652
>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
653
True
654
>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
655
True
656
>>> clone2 = sb.clone()
657
>>> sb.common_ancestor(clone2)[0]
658
2
659
>>> sb.common_ancestor(clone2, self_revno=1)[0]
660
1
661
>>> sb.common_ancestor(clone2, other_revno=1)[0]
662
1
663
"""
664
my_history = self.revision_history()
665
other_history = other.revision_history()
666
if self_revno is None:
667
self_revno = len(my_history)
668
if other_revno is None:
669
other_revno = len(other_history)
670
indices = range(min((self_revno, other_revno)))
671
indices.reverse()
672
for r in indices:
673
if my_history[r] == other_history[r]:
674
return r+1, my_history[r]
675
return None, None
676
677
def enum_history(self, direction):
678
"""Return (revno, revision_id) for history of branch.
679
680
direction
681
'forward' is from earliest to latest
682
'reverse' is from latest to earliest
683
"""
684
rh = self.revision_history()
685
if direction == 'forward':
686
i = 1
687
for rid in rh:
688
yield i, rid
689
i += 1
690
elif direction == 'reverse':
691
i = len(rh)
692
while i > 0:
693
yield i, rh[i-1]
694
i -= 1
695
else:
696
raise ValueError('invalid history direction', direction)
697
698
699
def revno(self):
700
"""Return current revision number for this branch.
701
702
That is equivalent to the number of revisions committed to
703
this branch.
704
"""
705
return len(self.revision_history())
706
707
708
def last_patch(self):
709
"""Return last patch hash, or None if no history.
710
"""
711
ph = self.revision_history()
712
if ph:
713
return ph[-1]
714
else:
715
return None
716
717
718
def missing_revisions(self, other, stop_revision=None):
719
"""
720
If self and other have not diverged, return a list of the revisions
721
present in other, but missing from self.
722
723
>>> from bzrlib.commit import commit
724
>>> bzrlib.trace.silent = True
725
>>> br1 = ScratchBranch()
726
>>> br2 = ScratchBranch()
727
>>> br1.missing_revisions(br2)
728
[]
729
>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
730
>>> br1.missing_revisions(br2)
731
[u'REVISION-ID-1']
732
>>> br2.missing_revisions(br1)
733
[]
734
>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
735
>>> br1.missing_revisions(br2)
736
[]
737
>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
738
>>> br1.missing_revisions(br2)
739
[u'REVISION-ID-2A']
740
>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
741
>>> br1.missing_revisions(br2)
742
Traceback (most recent call last):
743
DivergedBranches: These branches have diverged.
744
"""
745
self_history = self.revision_history()
746
self_len = len(self_history)
747
other_history = other.revision_history()
748
other_len = len(other_history)
749
common_index = min(self_len, other_len) -1
750
if common_index >= 0 and \
751
self_history[common_index] != other_history[common_index]:
752
raise DivergedBranches(self, other)
753
754
if stop_revision is None:
755
stop_revision = other_len
756
elif stop_revision > other_len:
757
raise NoSuchRevision(self, stop_revision)
758
759
return other_history[self_len:stop_revision]
760
761
762
def update_revisions(self, other, stop_revision=None):
763
"""Pull in all new revisions from other branch.
764
765
>>> from bzrlib.commit import commit
766
>>> bzrlib.trace.silent = True
767
>>> br1 = ScratchBranch(files=['foo', 'bar'])
768
>>> br1.add('foo')
769
>>> br1.add('bar')
770
>>> commit(br1, "lala!", rev_id="REVISION-ID-1", verbose=False)
771
>>> br2 = ScratchBranch()
772
>>> br2.update_revisions(br1)
773
Added 2 texts.
774
Added 1 inventories.
775
Added 1 revisions.
776
>>> br2.revision_history()
777
[u'REVISION-ID-1']
778
>>> br2.update_revisions(br1)
779
Added 0 texts.
780
Added 0 inventories.
781
Added 0 revisions.
782
>>> br1.text_store.total_size() == br2.text_store.total_size()
783
True
784
"""
785
from bzrlib.progress import ProgressBar
786
try:
787
set
788
except NameError:
789
from sets import Set as set
790
791
pb = ProgressBar()
792
793
pb.update('comparing histories')
794
revision_ids = self.missing_revisions(other, stop_revision)
795
796
if hasattr(other.revision_store, "prefetch"):
797
other.revision_store.prefetch(revision_ids)
798
if hasattr(other.inventory_store, "prefetch"):
799
inventory_ids = [other.get_revision(r).inventory_id
800
for r in revision_ids]
801
other.inventory_store.prefetch(inventory_ids)
802
803
revisions = []
804
needed_texts = set()
805
i = 0
806
for rev_id in revision_ids:
807
i += 1
808
pb.update('fetching revision', i, len(revision_ids))
809
rev = other.get_revision(rev_id)
810
revisions.append(rev)
811
inv = other.get_inventory(str(rev.inventory_id))
812
for key, entry in inv.iter_entries():
813
if entry.text_id is None:
814
continue
815
if entry.text_id not in self.text_store:
816
needed_texts.add(entry.text_id)
817
818
pb.clear()
819
820
count = self.text_store.copy_multi(other.text_store, needed_texts)
821
print "Added %d texts." % count
822
inventory_ids = [ f.inventory_id for f in revisions ]
823
count = self.inventory_store.copy_multi(other.inventory_store,
824
inventory_ids)
825
print "Added %d inventories." % count
826
revision_ids = [ f.revision_id for f in revisions]
827
count = self.revision_store.copy_multi(other.revision_store,
828
revision_ids)
829
for revision_id in revision_ids:
830
self.append_revision(revision_id)
831
print "Added %d revisions." % count
832
833
834
def commit(self, *args, **kw):
835
from bzrlib.commit import commit
836
commit(self, *args, **kw)
837
838
839
def lookup_revision(self, revno):
840
"""Return revision hash for revision number."""
841
if revno == 0:
842
return None
843
844
try:
845
# list is 0-based; revisions are 1-based
846
return self.revision_history()[revno-1]
847
except IndexError:
848
raise BzrError("no such revision %s" % revno)
849
850
851
def revision_tree(self, revision_id):
852
"""Return Tree for a revision on this branch.
853
854
`revision_id` may be None for the null revision, in which case
855
an `EmptyTree` is returned."""
856
from bzrlib.tree import EmptyTree, RevisionTree
857
# TODO: refactor this to use an existing revision object
858
# so we don't need to read it in twice.
859
if revision_id == None:
860
return EmptyTree()
861
else:
862
inv = self.get_revision_inventory(revision_id)
863
return RevisionTree(self.text_store, inv)
864
865
866
def working_tree(self):
867
"""Return a `Tree` for the working copy."""
868
from workingtree import WorkingTree
869
return WorkingTree(self.base, self.read_working_inventory())
870
871
872
def basis_tree(self):
873
"""Return `Tree` object for last revision.
874
875
If there are no revisions yet, return an `EmptyTree`.
876
"""
877
from bzrlib.tree import EmptyTree, RevisionTree
878
r = self.last_patch()
879
if r == None:
880
return EmptyTree()
881
else:
882
return RevisionTree(self.text_store, self.get_revision_inventory(r))
883
884
885
886
def rename_one(self, from_rel, to_rel):
887
"""Rename one file.
888
889
This can change the directory or the filename or both.
890
"""
891
self.lock_write()
892
try:
893
tree = self.working_tree()
894
inv = tree.inventory
895
if not tree.has_filename(from_rel):
896
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
897
if tree.has_filename(to_rel):
898
raise BzrError("can't rename: new working file %r already exists" % to_rel)
899
900
file_id = inv.path2id(from_rel)
901
if file_id == None:
902
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
903
904
if inv.path2id(to_rel):
905
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
906
907
to_dir, to_tail = os.path.split(to_rel)
908
to_dir_id = inv.path2id(to_dir)
909
if to_dir_id == None and to_dir != '':
910
raise BzrError("can't determine destination directory id for %r" % to_dir)
911
912
mutter("rename_one:")
913
mutter(" file_id {%s}" % file_id)
914
mutter(" from_rel %r" % from_rel)
915
mutter(" to_rel %r" % to_rel)
916
mutter(" to_dir %r" % to_dir)
917
mutter(" to_dir_id {%s}" % to_dir_id)
918
919
inv.rename(file_id, to_dir_id, to_tail)
920
921
print "%s => %s" % (from_rel, to_rel)
922
923
from_abs = self.abspath(from_rel)
924
to_abs = self.abspath(to_rel)
925
try:
926
os.rename(from_abs, to_abs)
927
except OSError, e:
928
raise BzrError("failed to rename %r to %r: %s"
929
% (from_abs, to_abs, e[1]),
930
["rename rolled back"])
931
932
self._write_inventory(inv)
933
finally:
934
self.unlock()
935
936
937
def move(self, from_paths, to_name):
938
"""Rename files.
939
940
to_name must exist as a versioned directory.
941
942
If to_name exists and is a directory, the files are moved into
943
it, keeping their old names. If it is a directory,
944
945
Note that to_name is only the last component of the new name;
946
this doesn't change the directory.
947
"""
948
self.lock_write()
949
try:
950
## TODO: Option to move IDs only
951
assert not isinstance(from_paths, basestring)
952
tree = self.working_tree()
953
inv = tree.inventory
954
to_abs = self.abspath(to_name)
955
if not isdir(to_abs):
956
raise BzrError("destination %r is not a directory" % to_abs)
957
if not tree.has_filename(to_name):
958
raise BzrError("destination %r not in working directory" % to_abs)
959
to_dir_id = inv.path2id(to_name)
960
if to_dir_id == None and to_name != '':
961
raise BzrError("destination %r is not a versioned directory" % to_name)
962
to_dir_ie = inv[to_dir_id]
963
if to_dir_ie.kind not in ('directory', 'root_directory'):
964
raise BzrError("destination %r is not a directory" % to_abs)
965
966
to_idpath = inv.get_idpath(to_dir_id)
967
968
for f in from_paths:
969
if not tree.has_filename(f):
970
raise BzrError("%r does not exist in working tree" % f)
971
f_id = inv.path2id(f)
972
if f_id == None:
973
raise BzrError("%r is not versioned" % f)
974
name_tail = splitpath(f)[-1]
975
dest_path = appendpath(to_name, name_tail)
976
if tree.has_filename(dest_path):
977
raise BzrError("destination %r already exists" % dest_path)
978
if f_id in to_idpath:
979
raise BzrError("can't move %r to a subdirectory of itself" % f)
980
981
# OK, so there's a race here, it's possible that someone will
982
# create a file in this interval and then the rename might be
983
# left half-done. But we should have caught most problems.
984
985
for f in from_paths:
986
name_tail = splitpath(f)[-1]
987
dest_path = appendpath(to_name, name_tail)
988
print "%s => %s" % (f, dest_path)
989
inv.rename(inv.path2id(f), to_dir_id, name_tail)
990
try:
991
os.rename(self.abspath(f), self.abspath(dest_path))
992
except OSError, e:
993
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
994
["rename rolled back"])
995
996
self._write_inventory(inv)
997
finally:
998
self.unlock()
999
1000
1001
def revert(self, filenames, old_tree=None, backups=True):
1002
"""Restore selected files to the versions from a previous tree.
1003
1004
backups
1005
If true (default) backups are made of files before
1006
they're renamed.
1007
"""
1008
from bzrlib.errors import NotVersionedError, BzrError
1009
from bzrlib.atomicfile import AtomicFile
1010
from bzrlib.osutils import backup_file
1011
1012
inv = self.read_working_inventory()
1013
if old_tree is None:
1014
old_tree = self.basis_tree()
1015
old_inv = old_tree.inventory
1016
1017
nids = []
1018
for fn in filenames:
1019
file_id = inv.path2id(fn)
1020
if not file_id:
1021
raise NotVersionedError("not a versioned file", fn)
1022
if not old_inv.has_id(file_id):
1023
raise BzrError("file not present in old tree", fn, file_id)
1024
nids.append((fn, file_id))
1025
1026
# TODO: Rename back if it was previously at a different location
1027
1028
# TODO: If given a directory, restore the entire contents from
1029
# the previous version.
1030
1031
# TODO: Make a backup to a temporary file.
1032
1033
# TODO: If the file previously didn't exist, delete it?
1034
for fn, file_id in nids:
1035
backup_file(fn)
1036
1037
f = AtomicFile(fn, 'wb')
1038
try:
1039
f.write(old_tree.get_file(file_id).read())
1040
f.commit()
1041
finally:
1042
f.close()
1043
1044
1045
def pending_merges(self):
1046
"""Return a list of pending merges.
1047
1048
These are revisions that have been merged into the working
1049
directory but not yet committed.
1050
"""
1051
cfn = self.controlfilename('pending-merges')
1052
if not os.path.exists(cfn):
1053
return []
1054
p = []
1055
for l in self.controlfile('pending-merges', 'r').readlines():
1056
p.append(l.rstrip('\n'))
1057
return p
1058
1059
1060
def add_pending_merge(self, revision_id):
1061
from bzrlib.revision import validate_revision_id
1062
1063
validate_revision_id(revision_id)
1064
1065
p = self.pending_merges()
1066
if revision_id in p:
1067
return
1068
p.append(revision_id)
1069
self.set_pending_merges(p)
1070
1071
1072
def set_pending_merges(self, rev_list):
1073
from bzrlib.atomicfile import AtomicFile
1074
self.lock_write()
1075
try:
1076
f = AtomicFile(self.controlfilename('pending-merges'))
1077
try:
1078
for l in rev_list:
1079
print >>f, l
1080
f.commit()
1081
finally:
1082
f.close()
1083
finally:
1084
self.unlock()
1085
1086
1087
1088
class ScratchBranch(Branch):
1089
"""Special test class: a branch that cleans up after itself.
1090
1091
>>> b = ScratchBranch()
1092
>>> isdir(b.base)
1093
True
1094
>>> bd = b.base
1095
>>> b.destroy()
1096
>>> isdir(bd)
1097
False
1098
"""
1099
def __init__(self, files=[], dirs=[], base=None):
1100
"""Make a test branch.
1101
1102
This creates a temporary directory and runs init-tree in it.
1103
1104
If any files are listed, they are created in the working copy.
1105
"""
1106
from tempfile import mkdtemp
1107
init = False
1108
if base is None:
1109
base = mkdtemp()
1110
init = True
1111
Branch.__init__(self, base, init=init)
1112
for d in dirs:
1113
os.mkdir(self.abspath(d))
1114
1115
for f in files:
1116
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
1117
1118
1119
def clone(self):
1120
"""
1121
>>> orig = ScratchBranch(files=["file1", "file2"])
1122
>>> clone = orig.clone()
1123
>>> os.path.samefile(orig.base, clone.base)
1124
False
1125
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1126
True
1127
"""
1128
from shutil import copytree
1129
from tempfile import mkdtemp
1130
base = mkdtemp()
1131
os.rmdir(base)
1132
copytree(self.base, base, symlinks=True)
1133
return ScratchBranch(base=base)
1134
1135
def __del__(self):
1136
self.destroy()
1137
1138
def destroy(self):
1139
"""Destroy the test branch, removing the scratch directory."""
1140
from shutil import rmtree
1141
try:
1142
if self.base:
1143
mutter("delete ScratchBranch %s" % self.base)
1144
rmtree(self.base)
1145
except OSError, e:
1146
# Work around for shutil.rmtree failing on Windows when
1147
# readonly files are encountered
1148
mutter("hit exception in destroying ScratchBranch: %s" % e)
1149
for root, dirs, files in os.walk(self.base, topdown=False):
1150
for name in files:
1151
os.chmod(os.path.join(root, name), 0700)
1152
rmtree(self.base)
1153
self.base = None
1154
1155
1156
1157
######################################################################
1158
# predicates
1159
1160
1161
def is_control_file(filename):
1162
## FIXME: better check
1163
filename = os.path.normpath(filename)
1164
while filename != '':
1165
head, tail = os.path.split(filename)
1166
## mutter('check %r for control file' % ((head, tail), ))
1167
if tail == bzrlib.BZRDIR:
1168
return True
1169
if filename == head:
1170
break
1171
filename = head
1172
return False
1173
1174
1175
1176
def gen_file_id(name):
1177
"""Return new file id.
1178
1179
This should probably generate proper UUIDs, but for the moment we
1180
cope with just randomness because running uuidgen every time is
1181
slow."""
1182
import re
1183
from binascii import hexlify
1184
from time import time
1185
1186
# get last component
1187
idx = name.rfind('/')
1188
if idx != -1:
1189
name = name[idx+1 : ]
1190
idx = name.rfind('\\')
1191
if idx != -1:
1192
name = name[idx+1 : ]
1193
1194
# make it not a hidden file
1195
name = name.lstrip('.')
1196
1197
# remove any wierd characters; we don't escape them but rather
1198
# just pull them out
1199
name = re.sub(r'[^\w.]', '', name)
1200
1201
s = hexlify(rand_bytes(8))
1202
return '-'.join((name, compact_date(time()), s))
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0