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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from warnings import warn
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from cStringIO import StringIO
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import sys, os, os.path, random, time, sha, sets, types, re, shutil, tempfile
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import traceback, socket, fnmatch, difflib, time
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from binascii import hexlify
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from inventory import Inventory
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from trace import mutter, note
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from tree import Tree, EmptyTree, RevisionTree, WorkingTree
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from inventory import InventoryEntry, Inventory
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from osutils import isdir, quotefn, isfile, uuid, sha_file, username, chomp, \
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format_date, compact_date, pumpfile, user_email, rand_bytes, splitpath, \
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joinpath, sha_string, file_kind, local_time_offset
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from store import ImmutableStore
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from revision import Revision
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from errors import bailout
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from textui import show_status
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from diff import diff_trees
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BZR_BRANCH_FORMAT = "Bazaar-NG branch, format 0.0.4\n"
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from bzrlib.inventory import InventoryEntry
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import bzrlib.inventory as inventory
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from bzrlib.trace import mutter, note
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from bzrlib.osutils import (isdir, quotefn, compact_date, rand_bytes,
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rename, splitpath, sha_file, appendpath,
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import bzrlib.errors as errors
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from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
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NoSuchRevision, HistoryMissing, NotBranchError,
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DivergedBranches, LockError, UnlistableStore,
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UnlistableBranch, NoSuchFile)
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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.delta import compare_trees
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from bzrlib.tree import EmptyTree, RevisionTree
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from bzrlib.inventory import Inventory
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from bzrlib.store import copy_all
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from bzrlib.store.compressed_text import CompressedTextStore
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from bzrlib.store.text import TextStore
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from bzrlib.store.weave import WeaveStore
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import bzrlib.transactions as transactions
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from bzrlib.transport import Transport, get_transport
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar-NG branch, format 6\n"
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## TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations.
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def find_branch(*ignored, **ignored_too):
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# XXX: leave this here for about one release, then remove it
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raise NotImplementedError('find_branch() is not supported anymore, '
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'please use one of the new branch constructors')
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def _relpath(base, path):
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"""Return path relative to base, or raise exception.
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The path may be either an absolute path or a path relative to the
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current working directory.
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Lifted out of Branch.relpath for ease of testing.
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os.path.commonprefix (python2.4) has a bad bug that it works just
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on string prefixes, assuming that '/u' is a prefix of '/u2'. This
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avoids that problem."""
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rp = os.path.abspath(path)
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while len(head) >= len(base):
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head, tail = os.path.split(head)
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raise NotBranchError("path %r is not within branch %r" % (rp, base))
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def find_branch_root(t):
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"""Find the branch root enclosing the transport's base.
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t is a Transport object.
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It is not necessary that the base of t exists.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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if t.has(bzrlib.BZRDIR):
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new_t = t.clone('..')
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if new_t.base == t.base:
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# reached the root, whatever that may be
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raise NotBranchError('%s is not in a branch' % orig_base)
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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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:todo: Perhaps use different stores for different classes of object,
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so that we can keep track of how much space each one uses,
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or garbage-collect them.
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:todo: Add a RemoteBranch subclass. For the basic case of read-only
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HTTP access this should be very easy by,
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just redirecting controlfile access into HTTP requests.
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We would need a RemoteStore working similarly.
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:todo: Keep the on-disk branch locked while the object exists.
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:todo: mkdir() method.
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def __init__(self, base, init=False):
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Base directory/url of the branch.
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def __init__(self, *ignored, **ignored_too):
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raise NotImplementedError('The Branch class is abstract')
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def open_downlevel(base):
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"""Open a branch which may be of an old format.
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Only local branches are supported."""
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return _Branch(get_transport(base), relax_version_check=True)
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"""Open an existing branch, rooted at 'base' (url)"""
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t = get_transport(base)
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mutter("trying to open %r with transport %r", base, t)
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def open_containing(url):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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t = get_transport(url)
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t = find_branch_root(t)
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def initialize(base):
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"""Create a new branch, rooted at 'base' (url)"""
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t = get_transport(base)
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return _Branch(t, init=True)
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def setup_caching(self, cache_root):
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"""Subclasses that care about caching should override this, and set
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up cached stores located under cache_root.
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self.cache_root = cache_root
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class _Branch(Branch):
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"""A branch stored in the actual filesystem.
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Note that it's "local" in the context of the filesystem; it doesn't
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really matter if it's on an nfs/smb/afs/coda/... share, as long as
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it's writable, and can be accessed via the normal filesystem API.
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If _lock_mode is true, a positive count of the number of times the
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Lock object from bzrlib.lock.
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# We actually expect this class to be somewhat short-lived; part of its
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# purpose is to try to isolate what bits of the branch logic are tied to
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# filesystem access, so that in a later step, we can extricate them to
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# a separarte ("storage") class.
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_inventory_weave = None
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# Map some sort of prefix into a namespace
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# stuff like "revno:10", "revid:", etc.
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# This should match a prefix with a function which accepts
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REVISION_NAMESPACES = {}
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def push_stores(self, branch_to):
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"""Copy the content of this branches store to branch_to."""
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if (self._branch_format != branch_to._branch_format
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or self._branch_format != 4):
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from bzrlib.fetch import greedy_fetch
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mutter("falling back to fetch logic to push between %s(%s) and %s(%s)",
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self, self._branch_format, branch_to, branch_to._branch_format)
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greedy_fetch(to_branch=branch_to, from_branch=self,
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revision=self.last_revision())
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store_pairs = ((self.text_store, branch_to.text_store),
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(self.inventory_store, branch_to.inventory_store),
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(self.revision_store, branch_to.revision_store))
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for from_store, to_store in store_pairs:
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copy_all(from_store, to_store)
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except UnlistableStore:
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raise UnlistableBranch(from_store)
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def __init__(self, transport, init=False,
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relax_version_check=False):
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"""Create new branch object at a particular location.
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:param base: Base directory for the branch.
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:param init: If True, create new control files in a previously
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transport -- A Transport object, defining how to access files.
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(If a string, transport.transport() will be used to
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create a Transport object)
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init -- If True, create new control files in a previously
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unversioned directory. If False, the branch must already
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relax_version_check -- If true, the usual check for the branch
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version is not applied. This is intended only for
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upgrade/recovery type use; it's not guaranteed that
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all operations will work on old format branches.
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In the test suite, creation of new trees is tested using the
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`ScratchBranch` class.
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self.base = os.path.realpath(base)
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assert isinstance(transport, Transport), \
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"%r is not a Transport" % transport
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self._transport = transport
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self._make_control()
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if not isdir(self.controlfilename('.')):
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bailout("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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self._check_format(relax_version_check)
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def get_store(name, compressed=True, prefixed=False):
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# FIXME: This approach of assuming stores are all entirely compressed
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# or entirely uncompressed is tidy, but breaks upgrade from
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# some existing branches where there's a mixture; we probably
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# still want the option to look for both.
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relpath = self._rel_controlfilename(name)
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store = CompressedTextStore(self._transport.clone(relpath),
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store = TextStore(self._transport.clone(relpath),
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#if self._transport.should_cache():
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# cache_path = os.path.join(self.cache_root, name)
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# os.mkdir(cache_path)
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# store = bzrlib.store.CachedStore(store, cache_path)
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def get_weave(name, prefixed=False):
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relpath = self._rel_controlfilename(name)
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ws = WeaveStore(self._transport.clone(relpath), prefixed=prefixed)
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if self._transport.should_cache():
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ws.enable_cache = True
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if self._branch_format == 4:
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self.inventory_store = get_store('inventory-store')
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self.text_store = get_store('text-store')
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self.revision_store = get_store('revision-store')
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elif self._branch_format == 5:
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self.control_weaves = get_weave([])
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self.weave_store = get_weave('weaves')
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self.revision_store = get_store('revision-store', compressed=False)
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elif self._branch_format == 6:
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self.control_weaves = get_weave([])
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self.weave_store = get_weave('weaves', prefixed=True)
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self.revision_store = get_store('revision-store', compressed=False,
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self._transaction = None
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def __str__(self):
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return '%s(%r)' % (self.__class__.__name__, self.base)
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return '%s(%r)' % (self.__class__.__name__, self._transport.base)
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__repr__ = __str__
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"""Return filename relative to branch top"""
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return os.path.join(self.base, name)
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if self._lock_mode or self._lock:
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# XXX: This should show something every time, and be suitable for
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# headless operation and embedding
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warn("branch %r was not explicitly unlocked" % self)
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# TODO: It might be best to do this somewhere else,
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# but it is nice for a Branch object to automatically
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# cache it's information.
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# Alternatively, we could have the Transport objects cache requests
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# See the earlier discussion about how major objects (like Branch)
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# should never expect their __del__ function to run.
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if hasattr(self, 'cache_root') and self.cache_root is not None:
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shutil.rmtree(self.cache_root)
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self.cache_root = None
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return self._transport.base
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base = property(_get_base)
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def _finish_transaction(self):
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"""Exit the current transaction."""
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if self._transaction is None:
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raise errors.LockError('Branch %s is not in a transaction' %
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transaction = self._transaction
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self._transaction = None
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def get_transaction(self):
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"""Return the current active transaction.
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If no transaction is active, this returns a passthrough object
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for which all data is immedaitely flushed and no caching happens.
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if self._transaction is None:
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return transactions.PassThroughTransaction()
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return self._transaction
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def _set_transaction(self, new_transaction):
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"""Set a new active transaction."""
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if self._transaction is not None:
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raise errors.LockError('Branch %s is in a transaction already.' %
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self._transaction = new_transaction
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def lock_write(self):
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mutter("lock write: %s (%s)", self, self._lock_count)
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# TODO: Upgrade locking to support using a Transport,
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# and potentially a remote locking protocol
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if self._lock_mode != 'w':
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raise LockError("can't upgrade to a write lock from %r" %
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self._lock_count += 1
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self._lock = self._transport.lock_write(
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self._rel_controlfilename('branch-lock'))
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self._lock_mode = 'w'
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self._set_transaction(transactions.PassThroughTransaction())
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mutter("lock read: %s (%s)", self, self._lock_count)
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assert self._lock_mode in ('r', 'w'), \
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"invalid lock mode %r" % self._lock_mode
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self._lock_count += 1
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self._lock = self._transport.lock_read(
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self._rel_controlfilename('branch-lock'))
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self._lock_mode = 'r'
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self._set_transaction(transactions.ReadOnlyTransaction())
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# 5K may be excessive, but hey, its a knob.
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self.get_transaction().set_cache_size(5000)
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mutter("unlock: %s (%s)", self, self._lock_count)
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if not self._lock_mode:
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raise LockError('branch %r is not locked' % (self))
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if self._lock_count > 1:
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self._lock_count -= 1
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self._finish_transaction()
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self._lock_mode = self._lock_count = None
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def abspath(self, name):
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"""Return absolute filename for something in the branch"""
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return self._transport.abspath(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 self._transport.relpath(path)
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def _rel_controlfilename(self, file_or_path):
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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 [bzrlib.BZRDIR] + file_or_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, types.StringTypes):
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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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return self._transport.abspath(self._rel_controlfilename(file_or_path))
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def controlfile(self, file_or_path, mode='r'):
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"""Open a control file for this branch"""
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return file(self.controlfilename(file_or_path), mode)
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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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relpath = self._rel_controlfilename(file_or_path)
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#TODO: codecs.open() buffers linewise, so it was overloaded with
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# a much larger buffer, do we need to do the same for getreader/getwriter?
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return self._transport.get(relpath)
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raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
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return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
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raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
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raise BzrError("invalid controlfile mode %r" % mode)
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def put_controlfile(self, path, f, encode=True):
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"""Write an entry as a controlfile.
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:param path: The path to put the file, relative to the .bzr control
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:param f: A file-like or string object whose contents should be copied.
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:param encode: If true, encode the contents as utf-8
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self.put_controlfiles([(path, f)], encode=encode)
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def put_controlfiles(self, files, encode=True):
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"""Write several entries as controlfiles.
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:param files: A list of [(path, file)] pairs, where the path is the directory
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underneath the bzr control directory
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:param encode: If true, encode the contents as utf-8
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for path, f in files:
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if isinstance(f, basestring):
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f = f.encode('utf-8', 'replace')
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f = codecs.getwriter('utf-8')(f, errors='replace')
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path = self._rel_controlfilename(path)
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ctrl_files.append((path, f))
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self._transport.put_multi(ctrl_files)
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def _make_control(self):
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os.mkdir(self.controlfilename([]))
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self.controlfile('README', 'w').write(
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from bzrlib.inventory import Inventory
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from bzrlib.weavefile import write_weave_v5
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from bzrlib.weave import Weave
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# Create an empty inventory
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# if we want per-tree root ids then this is the place to set
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# them; they're not needed for now and so ommitted for
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bzrlib.xml5.serializer_v5.write_inventory(Inventory(), sio)
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empty_inv = sio.getvalue()
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bzrlib.weavefile.write_weave_v5(Weave(), sio)
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empty_weave = sio.getvalue()
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dirs = [[], 'revision-store', 'weaves']
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"This is a Bazaar-NG control directory.\n"
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"Do not change any files in this directory.")
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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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Inventory().write_xml(self.controlfile('inventory','w'))
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def _check_format(self):
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"Do not change any files in this directory.\n"),
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('branch-format', BZR_BRANCH_FORMAT_6),
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('revision-history', ''),
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('pending-merges', ''),
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('inventory', empty_inv),
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('inventory.weave', empty_weave),
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('ancestry.weave', empty_weave)
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cfn = self._rel_controlfilename
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self._transport.mkdir_multi([cfn(d) for d in dirs])
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self.put_controlfiles(files)
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mutter('created control directory in ' + self._transport.base)
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def _check_format(self, relax_version_check):
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501
"""Check this branch format is supported.
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The current tool only supports the current unstable format.
503
The format level is stored, as an integer, in
504
self._branch_format for code that needs to check it later.
136
506
In the future, we might need different in-memory Branch
137
507
classes to support downlevel branches. But not yet.
139
# read in binary mode to detect newline wierdness.
140
fmt = self.controlfile('branch-format', 'rb').read()
141
if fmt != BZR_BRANCH_FORMAT:
142
bailout('sorry, branch format %r not supported' % fmt,
143
['use a different bzr version',
144
'or remove the .bzr directory and "bzr init" again'])
510
fmt = self.controlfile('branch-format', 'r').read()
512
raise NotBranchError(self.base)
513
mutter("got branch format %r", fmt)
514
if fmt == BZR_BRANCH_FORMAT_6:
515
self._branch_format = 6
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elif fmt == BZR_BRANCH_FORMAT_5:
517
self._branch_format = 5
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elif fmt == BZR_BRANCH_FORMAT_4:
519
self._branch_format = 4
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if (not relax_version_check
522
and self._branch_format not in (5, 6)):
523
raise errors.UnsupportedFormatError(
524
'sorry, branch format %r not supported' % fmt,
525
['use a different bzr version',
526
'or remove the .bzr directory'
527
' and "bzr init" again'])
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def get_root_id(self):
530
"""Return the id of this branches root"""
531
inv = self.read_working_inventory()
532
return inv.root.file_id
534
def set_root_id(self, file_id):
535
inv = self.read_working_inventory()
536
orig_root_id = inv.root.file_id
537
del inv._byid[inv.root.file_id]
538
inv.root.file_id = file_id
539
inv._byid[inv.root.file_id] = inv.root
542
if entry.parent_id in (None, orig_root_id):
543
entry.parent_id = inv.root.file_id
544
self._write_inventory(inv)
147
546
def read_working_inventory(self):
148
547
"""Read the working inventory."""
150
inv = Inventory.read_xml(self.controlfile('inventory', 'r'))
151
mutter("loaded inventory of %d items in %f"
152
% (len(inv), time.time() - before))
550
# ElementTree does its own conversion from UTF-8, so open in
552
f = self.controlfile('inventory', 'rb')
553
return bzrlib.xml5.serializer_v5.read_inventory(f)
156
558
def _write_inventory(self, inv):
157
559
"""Update the working inventory.
159
561
That is to say, the inventory describing changes underway, that
160
562
will be committed to the next revision.
162
## TODO: factor out to atomicfile? is rename safe on windows?
163
tmpfname = self.controlfilename('inventory.tmp')
164
tmpf = file(tmpfname, 'w')
167
os.rename(tmpfname, self.controlfilename('inventory'))
564
from cStringIO import StringIO
568
bzrlib.xml5.serializer_v5.write_inventory(inv, sio)
570
# Transport handles atomicity
571
self.put_controlfile('inventory', sio)
168
575
mutter('wrote working inventory')
171
577
inventory = property(read_working_inventory, _write_inventory, None,
172
578
"""Inventory for the working copy.""")
175
def add(self, files, verbose=False):
580
def add(self, files, ids=None):
176
581
"""Make files versioned.
583
Note that the command line normally calls smart_add instead,
584
which can automatically recurse.
178
586
This puts the files in the Added state, so that they will be
179
587
recorded by the next commit.
181
:todo: Perhaps have an option to add the ids even if the files do
184
:todo: Perhaps return the ids of the files? But then again it
185
is easy to retrieve them if they're needed.
187
:todo: Option to specify file id.
189
:todo: Adding a directory should optionally recurse down and
190
add all non-ignored children. Perhaps do that in a
193
>>> b = ScratchBranch(files=['foo'])
194
>>> 'foo' in b.unknowns()
199
>>> 'foo' in b.unknowns()
201
>>> bool(b.inventory.path2id('foo'))
207
Traceback (most recent call last):
209
BzrError: ('foo is already versioned', [])
211
>>> b.add(['nothere'])
212
Traceback (most recent call last):
213
BzrError: ('cannot add: not a regular file or directory: nothere', [])
590
List of paths to add, relative to the base of the tree.
593
If set, use these instead of automatically generated ids.
594
Must be the same length as the list of files, but may
595
contain None for ids that are to be autogenerated.
597
TODO: Perhaps have an option to add the ids even if the files do
600
TODO: Perhaps yield the ids and paths as they're added.
216
602
# TODO: Re-adding a file that is removed in the working copy
217
603
# should probably put it back with the previous ID.
218
if isinstance(files, types.StringTypes):
604
if isinstance(files, basestring):
605
assert(ids is None or isinstance(ids, basestring))
221
inv = self.read_working_inventory()
223
if is_control_file(f):
224
bailout("cannot add control file %s" % quotefn(f))
229
bailout("cannot add top-level %r" % f)
231
fullpath = os.path.normpath(self._rel(f))
235
elif isdir(fullpath):
238
bailout('cannot add: not a regular file or directory: %s' % quotefn(f))
241
parent_name = joinpath(fp[:-1])
242
mutter("lookup parent %r" % parent_name)
243
parent_id = inv.path2id(parent_name)
244
if parent_id == None:
245
bailout("cannot add: parent %r is not versioned"
250
file_id = _gen_file_id(fp[-1])
251
inv.add(InventoryEntry(file_id, fp[-1], kind=kind, parent_id=parent_id))
253
show_status('A', kind, quotefn(f))
255
mutter("add file %s file_id:{%s} kind=%r parent_id={%s}"
256
% (f, file_id, kind, parent_id))
257
self._write_inventory(inv)
611
ids = [None] * len(files)
613
assert(len(ids) == len(files))
617
inv = self.read_working_inventory()
618
for f,file_id in zip(files, ids):
619
if is_control_file(f):
620
raise BzrError("cannot add control file %s" % quotefn(f))
625
raise BzrError("cannot add top-level %r" % f)
627
fullpath = os.path.normpath(self.abspath(f))
630
kind = file_kind(fullpath)
632
# maybe something better?
633
raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
635
if not InventoryEntry.versionable_kind(kind):
636
raise BzrError('cannot add: not a versionable file ('
637
'i.e. regular file, symlink or directory): %s' % quotefn(f))
640
file_id = gen_file_id(f)
641
inv.add_path(f, kind=kind, file_id=file_id)
643
mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
645
self._write_inventory(inv)
650
def print_file(self, file, revno):
651
"""Print `file` to stdout."""
654
tree = self.revision_tree(self.get_rev_id(revno))
655
# use inventory as it was in that revision
656
file_id = tree.inventory.path2id(file)
658
raise BzrError("%r is not present in revision %s" % (file, revno))
659
tree.print_file(file_id)
261
664
def remove(self, files, verbose=False):
340
743
return self.working_tree().unknowns()
343
def commit(self, message, timestamp=None, timezone=None,
346
"""Commit working copy as a new revision.
348
The basic approach is to add all the file texts into the
349
store, then the inventory, then make a new revision pointing
350
to that inventory and store that.
352
This is not quite safe if the working copy changes during the
353
commit; for the moment that is simply not allowed. A better
354
approach is to make a temporary copy of the files before
355
computing their hashes, and then add those hashes in turn to
356
the inventory. This should mean at least that there are no
357
broken hash pointers. There is no way we can get a snapshot
358
of the whole directory at an instant. This would also have to
359
be robust against files disappearing, moving, etc. So the
360
whole thing is a bit hard.
362
:param timestamp: if not None, seconds-since-epoch for a
363
postdated/predated commit.
366
## TODO: Show branch names
368
# TODO: Don't commit if there are no changes, unless forced?
370
# First walk over the working inventory; and both update that
371
# and also build a new revision inventory. The revision
372
# inventory needs to hold the text-id, sha1 and size of the
373
# actual file versions committed in the revision. (These are
374
# not present in the working inventory.) We also need to
375
# detect missing/deleted files, and remove them from the
378
work_inv = self.read_working_inventory()
380
basis = self.basis_tree()
381
basis_inv = basis.inventory
383
for path, entry in work_inv.iter_entries():
384
## TODO: Cope with files that have gone missing.
386
## TODO: Check that the file kind has not changed from the previous
387
## revision of this file (if any).
392
file_id = entry.file_id
393
mutter('commit prep file %s, id %r ' % (p, file_id))
395
if not os.path.exists(p):
396
mutter(" file is missing, removing from inventory")
398
show_status('D', entry.kind, quotefn(path))
399
missing_ids.append(file_id)
402
# TODO: Handle files that have been deleted
404
# TODO: Maybe a special case for empty files? Seems a
405
# waste to store them many times.
409
if basis_inv.has_id(file_id):
410
old_kind = basis_inv[file_id].kind
411
if old_kind != entry.kind:
412
bailout("entry %r changed kind from %r to %r"
413
% (file_id, old_kind, entry.kind))
415
if entry.kind == 'directory':
417
bailout("%s is entered as directory but not a directory" % quotefn(p))
418
elif entry.kind == 'file':
420
bailout("%s is entered as file but is not a file" % quotefn(p))
422
content = file(p, 'rb').read()
424
entry.text_sha1 = sha_string(content)
425
entry.text_size = len(content)
427
old_ie = basis_inv.has_id(file_id) and basis_inv[file_id]
429
and (old_ie.text_size == entry.text_size)
430
and (old_ie.text_sha1 == entry.text_sha1)):
431
## assert content == basis.get_file(file_id).read()
432
entry.text_id = basis_inv[file_id].text_id
433
mutter(' unchanged from previous text_id {%s}' %
437
entry.text_id = _gen_file_id(entry.name)
438
self.text_store.add(content, entry.text_id)
439
mutter(' stored with text_id {%s}' % entry.text_id)
443
elif (old_ie.name == entry.name
444
and old_ie.parent_id == entry.parent_id):
449
show_status(state, entry.kind, quotefn(path))
451
for file_id in missing_ids:
452
# have to do this later so we don't mess up the iterator.
453
# since parents may be removed before their children we
456
# FIXME: There's probably a better way to do this; perhaps
457
# the workingtree should know how to filter itself.
458
if work_inv.has_id(file_id):
459
del work_inv[file_id]
462
inv_id = rev_id = _gen_revision_id(time.time())
464
inv_tmp = tempfile.TemporaryFile()
465
inv.write_xml(inv_tmp)
467
self.inventory_store.add(inv_tmp, inv_id)
468
mutter('new inventory_id is {%s}' % inv_id)
470
self._write_inventory(work_inv)
472
if timestamp == None:
473
timestamp = time.time()
475
if committer == None:
476
committer = username()
479
timezone = local_time_offset()
481
mutter("building commit log message")
482
rev = Revision(timestamp=timestamp,
485
precursor = self.last_patch(),
490
rev_tmp = tempfile.TemporaryFile()
491
rev.write_xml(rev_tmp)
493
self.revision_store.add(rev_tmp, rev_id)
494
mutter("new revision_id is {%s}" % rev_id)
496
## XXX: Everything up to here can simply be orphaned if we abort
497
## the commit; it will leave junk files behind but that doesn't
500
## TODO: Read back the just-generated changeset, and make sure it
501
## applies and recreates the right state.
503
## TODO: Also calculate and store the inventory SHA1
504
mutter("committing patch r%d" % (self.revno() + 1))
506
mutter("append to revision-history")
507
self.controlfile('revision-history', 'at').write(rev_id + '\n')
746
def append_revision(self, *revision_ids):
747
for revision_id in revision_ids:
748
mutter("add {%s} to revision-history" % revision_id)
751
rev_history = self.revision_history()
752
rev_history.extend(revision_ids)
753
self.put_controlfile('revision-history', '\n'.join(rev_history))
757
def has_revision(self, revision_id):
758
"""True if this branch has a copy of the revision.
760
This does not necessarily imply the revision is merge
761
or on the mainline."""
762
return (revision_id is None
763
or revision_id in self.revision_store)
765
def get_revision_xml_file(self, revision_id):
766
"""Return XML file object for revision object."""
767
if not revision_id or not isinstance(revision_id, basestring):
768
raise InvalidRevisionId(revision_id)
773
return self.revision_store[revision_id]
774
except (IndexError, KeyError):
775
raise bzrlib.errors.NoSuchRevision(self, revision_id)
780
get_revision_xml = get_revision_xml_file
782
def get_revision_xml(self, revision_id):
783
return self.get_revision_xml_file(revision_id).read()
512
786
def get_revision(self, revision_id):
513
787
"""Return the Revision object for a named revision"""
514
r = Revision.read_xml(self.revision_store[revision_id])
788
xml_file = self.get_revision_xml_file(revision_id)
791
r = bzrlib.xml5.serializer_v5.read_revision(xml_file)
792
except SyntaxError, e:
793
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
515
797
assert r.revision_id == revision_id
519
def get_inventory(self, inventory_id):
520
"""Get Inventory object by hash.
522
:todo: Perhaps for this and similar methods, take a revision
523
parameter which can be either an integer revno or a
525
i = Inventory.read_xml(self.inventory_store[inventory_id])
800
def get_revision_delta(self, revno):
801
"""Return the delta for one revision.
803
The delta is relative to its mainline predecessor, or the
804
empty tree for revision 1.
806
assert isinstance(revno, int)
807
rh = self.revision_history()
808
if not (1 <= revno <= len(rh)):
809
raise InvalidRevisionNumber(revno)
811
# revno is 1-based; list is 0-based
813
new_tree = self.revision_tree(rh[revno-1])
815
old_tree = EmptyTree()
817
old_tree = self.revision_tree(rh[revno-2])
819
return compare_trees(old_tree, new_tree)
821
def get_revision_sha1(self, revision_id):
822
"""Hash the stored value of a revision, and return it."""
823
# In the future, revision entries will be signed. At that
824
# point, it is probably best *not* to include the signature
825
# in the revision hash. Because that lets you re-sign
826
# the revision, (add signatures/remove signatures) and still
827
# have all hash pointers stay consistent.
828
# But for now, just hash the contents.
829
return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
831
def get_ancestry(self, revision_id):
832
"""Return a list of revision-ids integrated by a revision.
834
This currently returns a list, but the ordering is not guaranteed:
837
if revision_id is None:
839
w = self.get_inventory_weave()
840
return [None] + map(w.idx_to_name,
841
w.inclusions([w.lookup(revision_id)]))
843
def get_inventory_weave(self):
844
return self.control_weaves.get_weave('inventory',
845
self.get_transaction())
847
def get_inventory(self, revision_id):
848
"""Get Inventory object by hash."""
849
xml = self.get_inventory_xml(revision_id)
850
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
852
def get_inventory_xml(self, revision_id):
853
"""Get inventory XML as a file object."""
855
assert isinstance(revision_id, basestring), type(revision_id)
856
iw = self.get_inventory_weave()
857
return iw.get_text(iw.lookup(revision_id))
859
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
861
def get_inventory_sha1(self, revision_id):
862
"""Return the sha1 hash of the inventory entry
864
return self.get_revision(revision_id).inventory_sha1
529
866
def get_revision_inventory(self, revision_id):
530
867
"""Return inventory of a past revision."""
868
# TODO: Unify this with get_inventory()
869
# bzr 0.0.6 and later imposes the constraint that the inventory_id
870
# must be the same as its revision, so this is trivial.
531
871
if revision_id == None:
872
return Inventory(self.get_root_id())
534
return self.get_inventory(self.get_revision(revision_id).inventory_id)
874
return self.get_inventory(revision_id)
537
876
def revision_history(self):
538
"""Return sequence of revision hashes on to this branch.
877
"""Return sequence of revision hashes on to this branch."""
880
transaction = self.get_transaction()
881
history = transaction.map.find_revision_history()
882
if history is not None:
883
mutter("cache hit for revision-history in %s", self)
885
history = [l.rstrip('\r\n') for l in
886
self.controlfile('revision-history', 'r').readlines()]
887
transaction.map.add_revision_history(history)
888
# this call is disabled because revision_history is
889
# not really an object yet, and the transaction is for objects.
890
# transaction.register_clean(history, precious=True)
540
>>> ScratchBranch().revision_history()
543
return [chomp(l) for l in self.controlfile('revision-history').readlines()]
895
def common_ancestor(self, other, self_revno=None, other_revno=None):
897
>>> from bzrlib.commit import commit
898
>>> sb = ScratchBranch(files=['foo', 'foo~'])
899
>>> sb.common_ancestor(sb) == (None, None)
901
>>> commit(sb, "Committing first revision", verbose=False)
902
>>> sb.common_ancestor(sb)[0]
904
>>> clone = sb.clone()
905
>>> commit(sb, "Committing second revision", verbose=False)
906
>>> sb.common_ancestor(sb)[0]
908
>>> sb.common_ancestor(clone)[0]
910
>>> commit(clone, "Committing divergent second revision",
912
>>> sb.common_ancestor(clone)[0]
914
>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
916
>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
918
>>> clone2 = sb.clone()
919
>>> sb.common_ancestor(clone2)[0]
921
>>> sb.common_ancestor(clone2, self_revno=1)[0]
923
>>> sb.common_ancestor(clone2, other_revno=1)[0]
926
my_history = self.revision_history()
927
other_history = other.revision_history()
928
if self_revno is None:
929
self_revno = len(my_history)
930
if other_revno is None:
931
other_revno = len(other_history)
932
indices = range(min((self_revno, other_revno)))
935
if my_history[r] == other_history[r]:
936
return r+1, my_history[r]
549
943
That is equivalent to the number of revisions committed to
552
>>> b = ScratchBranch()
555
>>> b.commit('no foo')
559
946
return len(self.revision_history())
562
def last_patch(self):
949
def last_revision(self):
563
950
"""Return last patch hash, or None if no history.
565
>>> ScratchBranch().last_patch() == None
568
952
ph = self.revision_history()
573
def lookup_revision(self, revno):
574
"""Return revision hash for revision number."""
959
def missing_revisions(self, other, stop_revision=None, diverged_ok=False):
960
"""Return a list of new revisions that would perfectly fit.
962
If self and other have not diverged, return a list of the revisions
963
present in other, but missing from self.
965
>>> from bzrlib.commit import commit
966
>>> bzrlib.trace.silent = True
967
>>> br1 = ScratchBranch()
968
>>> br2 = ScratchBranch()
969
>>> br1.missing_revisions(br2)
971
>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
972
>>> br1.missing_revisions(br2)
974
>>> br2.missing_revisions(br1)
976
>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
977
>>> br1.missing_revisions(br2)
979
>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
980
>>> br1.missing_revisions(br2)
982
>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
983
>>> br1.missing_revisions(br2)
984
Traceback (most recent call last):
985
DivergedBranches: These branches have diverged.
987
# FIXME: If the branches have diverged, but the latest
988
# revision in this branch is completely merged into the other,
989
# then we should still be able to pull.
990
self_history = self.revision_history()
991
self_len = len(self_history)
992
other_history = other.revision_history()
993
other_len = len(other_history)
994
common_index = min(self_len, other_len) -1
995
if common_index >= 0 and \
996
self_history[common_index] != other_history[common_index]:
997
raise DivergedBranches(self, other)
999
if stop_revision is None:
1000
stop_revision = other_len
1002
assert isinstance(stop_revision, int)
1003
if stop_revision > other_len:
1004
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
1005
return other_history[self_len:stop_revision]
1007
def update_revisions(self, other, stop_revision=None):
1008
"""Pull in new perfect-fit revisions."""
1009
from bzrlib.fetch import greedy_fetch
1010
from bzrlib.revision import get_intervening_revisions
1011
if stop_revision is None:
1012
stop_revision = other.last_revision()
1013
if (stop_revision is not None and
1014
stop_revision in self.revision_history()):
1016
greedy_fetch(to_branch=self, from_branch=other,
1017
revision=stop_revision)
1018
pullable_revs = self.missing_revisions(
1019
other, other.revision_id_to_revno(stop_revision))
1021
greedy_fetch(to_branch=self,
1023
revision=pullable_revs[-1])
1024
self.append_revision(*pullable_revs)
1027
def commit(self, *args, **kw):
1028
from bzrlib.commit import Commit
1029
Commit().commit(self, *args, **kw)
1031
def revision_id_to_revno(self, revision_id):
1032
"""Given a revision id, return its revno"""
1033
if revision_id is None:
1035
history = self.revision_history()
1037
return history.index(revision_id) + 1
1039
raise bzrlib.errors.NoSuchRevision(self, revision_id)
1041
def get_rev_id(self, revno, history=None):
1042
"""Find the revision id of the specified revno."""
579
# list is 0-based; revisions are 1-based
580
return self.revision_history()[revno-1]
582
bailout("no such revision %s" % revno)
1046
history = self.revision_history()
1047
elif revno <= 0 or revno > len(history):
1048
raise bzrlib.errors.NoSuchRevision(self, revno)
1049
return history[revno - 1]
585
1051
def revision_tree(self, revision_id):
586
1052
"""Return Tree for a revision on this branch.
588
1054
`revision_id` may be None for the null revision, in which case
589
1055
an `EmptyTree` is returned."""
1056
# TODO: refactor this to use an existing revision object
1057
# so we don't need to read it in twice.
591
1058
if revision_id == None:
592
1059
return EmptyTree()
594
1061
inv = self.get_revision_inventory(revision_id)
595
return RevisionTree(self.text_store, inv)
1062
return RevisionTree(self.weave_store, inv, revision_id)
598
1065
def working_tree(self):
599
1066
"""Return a `Tree` for the working copy."""
600
return WorkingTree(self.base, self.read_working_inventory())
1067
from bzrlib.workingtree import WorkingTree
1068
# TODO: In the future, WorkingTree should utilize Transport
1069
# RobertCollins 20051003 - I don't think it should - working trees are
1070
# much more complex to keep consistent than our careful .bzr subset.
1071
# instead, we should say that working trees are local only, and optimise
1073
return WorkingTree(self._transport.base, self.read_working_inventory())
603
1076
def basis_tree(self):
604
1077
"""Return `Tree` object for last revision.
606
1079
If there are no revisions yet, return an `EmptyTree`.
608
>>> b = ScratchBranch(files=['foo'])
609
>>> b.basis_tree().has_filename('foo')
611
>>> b.working_tree().has_filename('foo')
614
>>> b.commit('add foo')
615
>>> b.basis_tree().has_filename('foo')
618
r = self.last_patch()
622
return RevisionTree(self.text_store, self.get_revision_inventory(r))
626
def write_log(self, show_timezone='original'):
627
"""Write out human-readable log of commits to this branch
629
:param utc: If true, show dates in universal time, not local time."""
630
## TODO: Option to choose either original, utc or local timezone
633
for p in self.revision_history():
635
print 'revno:', revno
636
## TODO: Show hash if --id is given.
637
##print 'revision-hash:', p
638
rev = self.get_revision(p)
639
print 'committer:', rev.committer
640
print 'timestamp: %s' % (format_date(rev.timestamp, rev.timezone or 0,
643
## opportunistic consistency check, same as check_patch_chaining
644
if rev.precursor != precursor:
645
bailout("mismatched precursor!")
649
print ' (no message)'
651
for l in rev.message.split('\n'):
659
def show_status(branch, show_all=False):
660
"""Display single-line status for non-ignored working files.
662
The list is show sorted in order by file name.
664
>>> b = ScratchBranch(files=['foo', 'foo~'])
670
>>> b.commit("add foo")
672
>>> os.unlink(b._rel('foo'))
677
:todo: Get state for single files.
679
:todo: Perhaps show a slash at the end of directory names.
683
# We have to build everything into a list first so that it can
684
# sorted by name, incorporating all the different sources.
686
# FIXME: Rather than getting things in random order and then sorting,
687
# just step through in order.
689
# Interesting case: the old ID for a file has been removed,
690
# but a new file has been created under that name.
692
old = branch.basis_tree()
693
old_inv = old.inventory
694
new = branch.working_tree()
695
new_inv = new.inventory
697
for fs, fid, oldname, newname, kind in diff_trees(old, new):
699
show_status(fs, kind,
700
oldname + ' => ' + newname)
701
elif fs == 'A' or fs == 'M':
702
show_status(fs, kind, newname)
704
show_status(fs, kind, oldname)
707
show_status(fs, kind, newname)
710
show_status(fs, kind, newname)
712
show_status(fs, kind, newname)
714
bailout("wierd file state %r" % ((fs, fid),))
718
class ScratchBranch(Branch):
1081
return self.revision_tree(self.last_revision())
1084
def rename_one(self, from_rel, to_rel):
1087
This can change the directory or the filename or both.
1091
tree = self.working_tree()
1092
inv = tree.inventory
1093
if not tree.has_filename(from_rel):
1094
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
1095
if tree.has_filename(to_rel):
1096
raise BzrError("can't rename: new working file %r already exists" % to_rel)
1098
file_id = inv.path2id(from_rel)
1100
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
1102
if inv.path2id(to_rel):
1103
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
1105
to_dir, to_tail = os.path.split(to_rel)
1106
to_dir_id = inv.path2id(to_dir)
1107
if to_dir_id == None and to_dir != '':
1108
raise BzrError("can't determine destination directory id for %r" % to_dir)
1110
mutter("rename_one:")
1111
mutter(" file_id {%s}" % file_id)
1112
mutter(" from_rel %r" % from_rel)
1113
mutter(" to_rel %r" % to_rel)
1114
mutter(" to_dir %r" % to_dir)
1115
mutter(" to_dir_id {%s}" % to_dir_id)
1117
inv.rename(file_id, to_dir_id, to_tail)
1119
from_abs = self.abspath(from_rel)
1120
to_abs = self.abspath(to_rel)
1122
rename(from_abs, to_abs)
1124
raise BzrError("failed to rename %r to %r: %s"
1125
% (from_abs, to_abs, e[1]),
1126
["rename rolled back"])
1128
self._write_inventory(inv)
1133
def move(self, from_paths, to_name):
1136
to_name must exist as a versioned directory.
1138
If to_name exists and is a directory, the files are moved into
1139
it, keeping their old names. If it is a directory,
1141
Note that to_name is only the last component of the new name;
1142
this doesn't change the directory.
1144
This returns a list of (from_path, to_path) pairs for each
1145
entry that is moved.
1150
## TODO: Option to move IDs only
1151
assert not isinstance(from_paths, basestring)
1152
tree = self.working_tree()
1153
inv = tree.inventory
1154
to_abs = self.abspath(to_name)
1155
if not isdir(to_abs):
1156
raise BzrError("destination %r is not a directory" % to_abs)
1157
if not tree.has_filename(to_name):
1158
raise BzrError("destination %r not in working directory" % to_abs)
1159
to_dir_id = inv.path2id(to_name)
1160
if to_dir_id == None and to_name != '':
1161
raise BzrError("destination %r is not a versioned directory" % to_name)
1162
to_dir_ie = inv[to_dir_id]
1163
if to_dir_ie.kind not in ('directory', 'root_directory'):
1164
raise BzrError("destination %r is not a directory" % to_abs)
1166
to_idpath = inv.get_idpath(to_dir_id)
1168
for f in from_paths:
1169
if not tree.has_filename(f):
1170
raise BzrError("%r does not exist in working tree" % f)
1171
f_id = inv.path2id(f)
1173
raise BzrError("%r is not versioned" % f)
1174
name_tail = splitpath(f)[-1]
1175
dest_path = appendpath(to_name, name_tail)
1176
if tree.has_filename(dest_path):
1177
raise BzrError("destination %r already exists" % dest_path)
1178
if f_id in to_idpath:
1179
raise BzrError("can't move %r to a subdirectory of itself" % f)
1181
# OK, so there's a race here, it's possible that someone will
1182
# create a file in this interval and then the rename might be
1183
# left half-done. But we should have caught most problems.
1185
for f in from_paths:
1186
name_tail = splitpath(f)[-1]
1187
dest_path = appendpath(to_name, name_tail)
1188
result.append((f, dest_path))
1189
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1191
rename(self.abspath(f), self.abspath(dest_path))
1193
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1194
["rename rolled back"])
1196
self._write_inventory(inv)
1203
def revert(self, filenames, old_tree=None, backups=True):
1204
"""Restore selected files to the versions from a previous tree.
1207
If true (default) backups are made of files before
1210
from bzrlib.errors import NotVersionedError, BzrError
1211
from bzrlib.atomicfile import AtomicFile
1212
from bzrlib.osutils import backup_file
1214
inv = self.read_working_inventory()
1215
if old_tree is None:
1216
old_tree = self.basis_tree()
1217
old_inv = old_tree.inventory
1220
for fn in filenames:
1221
file_id = inv.path2id(fn)
1223
raise NotVersionedError("not a versioned file", fn)
1224
if not old_inv.has_id(file_id):
1225
raise BzrError("file not present in old tree", fn, file_id)
1226
nids.append((fn, file_id))
1228
# TODO: Rename back if it was previously at a different location
1230
# TODO: If given a directory, restore the entire contents from
1231
# the previous version.
1233
# TODO: Make a backup to a temporary file.
1235
# TODO: If the file previously didn't exist, delete it?
1236
for fn, file_id in nids:
1239
f = AtomicFile(fn, 'wb')
1241
f.write(old_tree.get_file(file_id).read())
1247
def pending_merges(self):
1248
"""Return a list of pending merges.
1250
These are revisions that have been merged into the working
1251
directory but not yet committed.
1253
cfn = self._rel_controlfilename('pending-merges')
1254
if not self._transport.has(cfn):
1257
for l in self.controlfile('pending-merges', 'r').readlines():
1258
p.append(l.rstrip('\n'))
1262
def add_pending_merge(self, *revision_ids):
1263
# TODO: Perhaps should check at this point that the
1264
# history of the revision is actually present?
1265
p = self.pending_merges()
1267
for rev_id in revision_ids:
1273
self.set_pending_merges(p)
1275
def set_pending_merges(self, rev_list):
1278
self.put_controlfile('pending-merges', '\n'.join(rev_list))
1283
def get_parent(self):
1284
"""Return the parent location of the branch.
1286
This is the default location for push/pull/missing. The usual
1287
pattern is that the user can override it by specifying a
1291
_locs = ['parent', 'pull', 'x-pull']
1294
return self.controlfile(l, 'r').read().strip('\n')
1296
if e.errno != errno.ENOENT:
1301
def set_parent(self, url):
1302
# TODO: Maybe delete old location files?
1303
from bzrlib.atomicfile import AtomicFile
1306
f = AtomicFile(self.controlfilename('parent'))
1315
def check_revno(self, revno):
1317
Check whether a revno corresponds to any revision.
1318
Zero (the NULL revision) is considered valid.
1321
self.check_real_revno(revno)
1323
def check_real_revno(self, revno):
1325
Check whether a revno corresponds to a real revision.
1326
Zero (the NULL revision) is considered invalid
1328
if revno < 1 or revno > self.revno():
1329
raise InvalidRevisionNumber(revno)
1335
class ScratchBranch(_Branch):
719
1336
"""Special test class: a branch that cleans up after itself.
721
1338
>>> b = ScratchBranch()
722
1339
>>> isdir(b.base)
729
def __init__(self, files = []):
1346
def __init__(self, files=[], dirs=[], base=None):
730
1347
"""Make a test branch.
732
1349
This creates a temporary directory and runs init-tree in it.
734
1351
If any files are listed, they are created in the working copy.
736
Branch.__init__(self, tempfile.mkdtemp(), init=True)
1353
from tempfile import mkdtemp
1358
if isinstance(base, basestring):
1359
base = get_transport(base)
1360
_Branch.__init__(self, base, init=init)
1362
self._transport.mkdir(d)
738
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
1365
self._transport.put(f, 'content of %s' % f)
1370
>>> orig = ScratchBranch(files=["file1", "file2"])
1371
>>> clone = orig.clone()
1372
>>> if os.name != 'nt':
1373
... os.path.samefile(orig.base, clone.base)
1375
... orig.base == clone.base
1378
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1381
from shutil import copytree
1382
from tempfile import mkdtemp
1385
copytree(self.base, base, symlinks=True)
1386
return ScratchBranch(base=base)
741
1388
def __del__(self):
742
1392
"""Destroy the test branch, removing the scratch directory."""
743
shutil.rmtree(self.base)
1393
from shutil import rmtree
1396
mutter("delete ScratchBranch %s" % self.base)
1399
# Work around for shutil.rmtree failing on Windows when
1400
# readonly files are encountered
1401
mutter("hit exception in destroying ScratchBranch: %s" % e)
1402
for root, dirs, files in os.walk(self.base, topdown=False):
1404
os.chmod(os.path.join(root, name), 0700)
1406
self._transport = None