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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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######################################################################
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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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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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t = get_transport(url)
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except NotBranchError:
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new_t = t.clone('..')
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if new_t.base == t.base:
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# reached the root, whatever that may be
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raise NotBranchError('%s is not in a branch' % url)
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def initialize(base):
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"""Create a new branch, rooted at 'base' (url)"""
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t = get_transport(base)
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return _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
404
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
459
from bzrlib.weave import Weave
461
# Create an empty inventory
463
# if we want per-tree root ids then this is the place to set
464
# them; they're not needed for now and so ommitted for
466
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()
472
dirs = [[], 'revision-store', 'weaves']
119
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"This is a Bazaar-NG control directory.\n"
120
"Do not change any files in this directory.")
121
self.controlfile('branch-format', 'w').write(BZR_BRANCH_FORMAT)
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for d in ('text-store', 'inventory-store', 'revision-store'):
123
os.mkdir(self.controlfilename(d))
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for f in ('revision-history', 'merged-patches',
125
'pending-merged-patches', 'branch-name'):
126
self.controlfile(f, 'w').write('')
127
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):
475
"Do not change any files in this directory.\n"),
476
('branch-format', BZR_BRANCH_FORMAT_6),
477
('revision-history', ''),
480
('pending-merges', ''),
481
('inventory', empty_inv),
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('inventory.weave', empty_weave),
483
('ancestry.weave', empty_weave)
485
cfn = self._rel_controlfilename
486
self._transport.mkdir_multi([cfn(d) for d in dirs])
487
self.put_controlfiles(files)
488
mutter('created control directory in ' + self._transport.base)
490
def _check_format(self, relax_version_check):
132
491
"""Check this branch format is supported.
134
The current tool only supports the current unstable format.
493
The format level is stored, as an integer, in
494
self._branch_format for code that needs to check it later.
136
496
In the future, we might need different in-memory Branch
137
497
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'])
500
fmt = self.controlfile('branch-format', 'r').read()
502
raise NotBranchError(self.base)
503
mutter("got branch format %r", fmt)
504
if fmt == BZR_BRANCH_FORMAT_6:
505
self._branch_format = 6
506
elif fmt == BZR_BRANCH_FORMAT_5:
507
self._branch_format = 5
508
elif fmt == BZR_BRANCH_FORMAT_4:
509
self._branch_format = 4
511
if (not relax_version_check
512
and self._branch_format not in (5, 6)):
513
raise errors.UnsupportedFormatError(
514
'sorry, branch format %r not supported' % fmt,
515
['use a different bzr version',
516
'or remove the .bzr directory'
517
' and "bzr init" again'])
519
def get_root_id(self):
520
"""Return the id of this branches root"""
521
inv = self.read_working_inventory()
522
return inv.root.file_id
524
def set_root_id(self, file_id):
525
inv = self.read_working_inventory()
526
orig_root_id = inv.root.file_id
527
del inv._byid[inv.root.file_id]
528
inv.root.file_id = file_id
529
inv._byid[inv.root.file_id] = inv.root
532
if entry.parent_id in (None, orig_root_id):
533
entry.parent_id = inv.root.file_id
534
self._write_inventory(inv)
147
536
def read_working_inventory(self):
148
537
"""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))
540
# ElementTree does its own conversion from UTF-8, so open in
542
f = self.controlfile('inventory', 'rb')
543
return bzrlib.xml5.serializer_v5.read_inventory(f)
156
548
def _write_inventory(self, inv):
157
549
"""Update the working inventory.
159
551
That is to say, the inventory describing changes underway, that
160
552
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'))
554
from cStringIO import StringIO
558
bzrlib.xml5.serializer_v5.write_inventory(inv, sio)
560
# Transport handles atomicity
561
self.put_controlfile('inventory', sio)
168
565
mutter('wrote working inventory')
171
567
inventory = property(read_working_inventory, _write_inventory, None,
172
568
"""Inventory for the working copy.""")
175
def add(self, files, verbose=False):
570
def add(self, files, ids=None):
176
571
"""Make files versioned.
573
Note that the command line normally calls smart_add instead,
574
which can automatically recurse.
178
576
This puts the files in the Added state, so that they will be
179
577
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', [])
580
List of paths to add, relative to the base of the tree.
583
If set, use these instead of automatically generated ids.
584
Must be the same length as the list of files, but may
585
contain None for ids that are to be autogenerated.
587
TODO: Perhaps have an option to add the ids even if the files do
590
TODO: Perhaps yield the ids and paths as they're added.
216
592
# TODO: Re-adding a file that is removed in the working copy
217
593
# should probably put it back with the previous ID.
218
if isinstance(files, types.StringTypes):
594
if isinstance(files, basestring):
595
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)
601
ids = [None] * len(files)
603
assert(len(ids) == len(files))
607
inv = self.read_working_inventory()
608
for f,file_id in zip(files, ids):
609
if is_control_file(f):
610
raise BzrError("cannot add control file %s" % quotefn(f))
615
raise BzrError("cannot add top-level %r" % f)
617
fullpath = os.path.normpath(self.abspath(f))
620
kind = file_kind(fullpath)
622
# maybe something better?
623
raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
625
if not InventoryEntry.versionable_kind(kind):
626
raise BzrError('cannot add: not a versionable file ('
627
'i.e. regular file, symlink or directory): %s' % quotefn(f))
630
file_id = gen_file_id(f)
631
inv.add_path(f, kind=kind, file_id=file_id)
633
mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
635
self._write_inventory(inv)
640
def print_file(self, file, revno):
641
"""Print `file` to stdout."""
644
tree = self.revision_tree(self.get_rev_id(revno))
645
# use inventory as it was in that revision
646
file_id = tree.inventory.path2id(file)
648
raise BzrError("%r is not present in revision %s" % (file, revno))
649
tree.print_file(file_id)
261
654
def remove(self, files, verbose=False):
340
733
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')
736
def append_revision(self, *revision_ids):
737
for revision_id in revision_ids:
738
mutter("add {%s} to revision-history" % revision_id)
741
rev_history = self.revision_history()
742
rev_history.extend(revision_ids)
743
self.put_controlfile('revision-history', '\n'.join(rev_history))
747
def has_revision(self, revision_id):
748
"""True if this branch has a copy of the revision.
750
This does not necessarily imply the revision is merge
751
or on the mainline."""
752
return (revision_id is None
753
or revision_id in self.revision_store)
755
def get_revision_xml_file(self, revision_id):
756
"""Return XML file object for revision object."""
757
if not revision_id or not isinstance(revision_id, basestring):
758
raise InvalidRevisionId(revision_id)
763
return self.revision_store[revision_id]
764
except (IndexError, KeyError):
765
raise bzrlib.errors.NoSuchRevision(self, revision_id)
770
get_revision_xml = get_revision_xml_file
772
def get_revision_xml(self, revision_id):
773
return self.get_revision_xml_file(revision_id).read()
512
776
def get_revision(self, revision_id):
513
777
"""Return the Revision object for a named revision"""
514
r = Revision.read_xml(self.revision_store[revision_id])
778
xml_file = self.get_revision_xml_file(revision_id)
781
r = bzrlib.xml5.serializer_v5.read_revision(xml_file)
782
except SyntaxError, e:
783
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
515
787
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])
790
def get_revision_delta(self, revno):
791
"""Return the delta for one revision.
793
The delta is relative to its mainline predecessor, or the
794
empty tree for revision 1.
796
assert isinstance(revno, int)
797
rh = self.revision_history()
798
if not (1 <= revno <= len(rh)):
799
raise InvalidRevisionNumber(revno)
801
# revno is 1-based; list is 0-based
803
new_tree = self.revision_tree(rh[revno-1])
805
old_tree = EmptyTree()
807
old_tree = self.revision_tree(rh[revno-2])
809
return compare_trees(old_tree, new_tree)
811
def get_revision_sha1(self, revision_id):
812
"""Hash the stored value of a revision, and return it."""
813
# In the future, revision entries will be signed. At that
814
# point, it is probably best *not* to include the signature
815
# in the revision hash. Because that lets you re-sign
816
# the revision, (add signatures/remove signatures) and still
817
# have all hash pointers stay consistent.
818
# But for now, just hash the contents.
819
return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
821
def get_ancestry(self, revision_id):
822
"""Return a list of revision-ids integrated by a revision.
824
This currently returns a list, but the ordering is not guaranteed:
827
if revision_id is None:
829
w = self.get_inventory_weave()
830
return [None] + map(w.idx_to_name,
831
w.inclusions([w.lookup(revision_id)]))
833
def get_inventory_weave(self):
834
return self.control_weaves.get_weave('inventory',
835
self.get_transaction())
837
def get_inventory(self, revision_id):
838
"""Get Inventory object by hash."""
839
xml = self.get_inventory_xml(revision_id)
840
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
842
def get_inventory_xml(self, revision_id):
843
"""Get inventory XML as a file object."""
845
assert isinstance(revision_id, basestring), type(revision_id)
846
iw = self.get_inventory_weave()
847
return iw.get_text(iw.lookup(revision_id))
849
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
851
def get_inventory_sha1(self, revision_id):
852
"""Return the sha1 hash of the inventory entry
854
return self.get_revision(revision_id).inventory_sha1
529
856
def get_revision_inventory(self, revision_id):
530
857
"""Return inventory of a past revision."""
858
# TODO: Unify this with get_inventory()
859
# bzr 0.0.6 and later imposes the constraint that the inventory_id
860
# must be the same as its revision, so this is trivial.
531
861
if revision_id == None:
862
return Inventory(self.get_root_id())
534
return self.get_inventory(self.get_revision(revision_id).inventory_id)
864
return self.get_inventory(revision_id)
537
866
def revision_history(self):
538
"""Return sequence of revision hashes on to this branch.
867
"""Return sequence of revision hashes on to this branch."""
870
transaction = self.get_transaction()
871
history = transaction.map.find_revision_history()
872
if history is not None:
873
mutter("cache hit for revision-history in %s", self)
875
history = [l.rstrip('\r\n') for l in
876
self.controlfile('revision-history', 'r').readlines()]
877
transaction.map.add_revision_history(history)
878
# this call is disabled because revision_history is
879
# not really an object yet, and the transaction is for objects.
880
# transaction.register_clean(history, precious=True)
540
>>> ScratchBranch().revision_history()
543
return [chomp(l) for l in self.controlfile('revision-history').readlines()]
885
def common_ancestor(self, other, self_revno=None, other_revno=None):
887
>>> from bzrlib.commit import commit
888
>>> sb = ScratchBranch(files=['foo', 'foo~'])
889
>>> sb.common_ancestor(sb) == (None, None)
891
>>> commit(sb, "Committing first revision", verbose=False)
892
>>> sb.common_ancestor(sb)[0]
894
>>> clone = sb.clone()
895
>>> commit(sb, "Committing second revision", verbose=False)
896
>>> sb.common_ancestor(sb)[0]
898
>>> sb.common_ancestor(clone)[0]
900
>>> commit(clone, "Committing divergent second revision",
902
>>> sb.common_ancestor(clone)[0]
904
>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
906
>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
908
>>> clone2 = sb.clone()
909
>>> sb.common_ancestor(clone2)[0]
911
>>> sb.common_ancestor(clone2, self_revno=1)[0]
913
>>> sb.common_ancestor(clone2, other_revno=1)[0]
916
my_history = self.revision_history()
917
other_history = other.revision_history()
918
if self_revno is None:
919
self_revno = len(my_history)
920
if other_revno is None:
921
other_revno = len(other_history)
922
indices = range(min((self_revno, other_revno)))
925
if my_history[r] == other_history[r]:
926
return r+1, my_history[r]
549
933
That is equivalent to the number of revisions committed to
552
>>> b = ScratchBranch()
555
>>> b.commit('no foo')
559
936
return len(self.revision_history())
562
def last_patch(self):
939
def last_revision(self):
563
940
"""Return last patch hash, or None if no history.
565
>>> ScratchBranch().last_patch() == None
568
942
ph = self.revision_history()
573
def lookup_revision(self, revno):
574
"""Return revision hash for revision number."""
949
def missing_revisions(self, other, stop_revision=None, diverged_ok=False):
950
"""Return a list of new revisions that would perfectly fit.
952
If self and other have not diverged, return a list of the revisions
953
present in other, but missing from self.
955
>>> from bzrlib.commit import commit
956
>>> bzrlib.trace.silent = True
957
>>> br1 = ScratchBranch()
958
>>> br2 = ScratchBranch()
959
>>> br1.missing_revisions(br2)
961
>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
962
>>> br1.missing_revisions(br2)
964
>>> br2.missing_revisions(br1)
966
>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
967
>>> br1.missing_revisions(br2)
969
>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
970
>>> br1.missing_revisions(br2)
972
>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
973
>>> br1.missing_revisions(br2)
974
Traceback (most recent call last):
975
DivergedBranches: These branches have diverged.
977
# FIXME: If the branches have diverged, but the latest
978
# revision in this branch is completely merged into the other,
979
# then we should still be able to pull.
980
self_history = self.revision_history()
981
self_len = len(self_history)
982
other_history = other.revision_history()
983
other_len = len(other_history)
984
common_index = min(self_len, other_len) -1
985
if common_index >= 0 and \
986
self_history[common_index] != other_history[common_index]:
987
raise DivergedBranches(self, other)
989
if stop_revision is None:
990
stop_revision = other_len
992
assert isinstance(stop_revision, int)
993
if stop_revision > other_len:
994
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
995
return other_history[self_len:stop_revision]
997
def update_revisions(self, other, stop_revision=None):
998
"""Pull in new perfect-fit revisions."""
999
from bzrlib.fetch import greedy_fetch
1000
from bzrlib.revision import get_intervening_revisions
1001
if stop_revision is None:
1002
stop_revision = other.last_revision()
1003
if (stop_revision is not None and
1004
stop_revision in self.revision_history()):
1006
greedy_fetch(to_branch=self, from_branch=other,
1007
revision=stop_revision)
1008
pullable_revs = self.missing_revisions(
1009
other, other.revision_id_to_revno(stop_revision))
1011
greedy_fetch(to_branch=self,
1013
revision=pullable_revs[-1])
1014
self.append_revision(*pullable_revs)
1017
def commit(self, *args, **kw):
1018
from bzrlib.commit import Commit
1019
Commit().commit(self, *args, **kw)
1021
def revision_id_to_revno(self, revision_id):
1022
"""Given a revision id, return its revno"""
1023
if revision_id is None:
1025
history = self.revision_history()
1027
return history.index(revision_id) + 1
1029
raise bzrlib.errors.NoSuchRevision(self, revision_id)
1031
def get_rev_id(self, revno, history=None):
1032
"""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)
1036
history = self.revision_history()
1037
elif revno <= 0 or revno > len(history):
1038
raise bzrlib.errors.NoSuchRevision(self, revno)
1039
return history[revno - 1]
585
1041
def revision_tree(self, revision_id):
586
1042
"""Return Tree for a revision on this branch.
588
1044
`revision_id` may be None for the null revision, in which case
589
1045
an `EmptyTree` is returned."""
1046
# TODO: refactor this to use an existing revision object
1047
# so we don't need to read it in twice.
591
1048
if revision_id == None:
592
1049
return EmptyTree()
594
1051
inv = self.get_revision_inventory(revision_id)
595
return RevisionTree(self.text_store, inv)
1052
return RevisionTree(self.weave_store, inv, revision_id)
598
1055
def working_tree(self):
599
1056
"""Return a `Tree` for the working copy."""
600
return WorkingTree(self.base, self.read_working_inventory())
1057
from bzrlib.workingtree import WorkingTree
1058
# TODO: In the future, WorkingTree should utilize Transport
1059
# RobertCollins 20051003 - I don't think it should - working trees are
1060
# much more complex to keep consistent than our careful .bzr subset.
1061
# instead, we should say that working trees are local only, and optimise
1063
return WorkingTree(self._transport.base, self.read_working_inventory())
603
1066
def basis_tree(self):
604
1067
"""Return `Tree` object for last revision.
606
1069
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):
1071
return self.revision_tree(self.last_revision())
1074
def rename_one(self, from_rel, to_rel):
1077
This can change the directory or the filename or both.
1081
tree = self.working_tree()
1082
inv = tree.inventory
1083
if not tree.has_filename(from_rel):
1084
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
1085
if tree.has_filename(to_rel):
1086
raise BzrError("can't rename: new working file %r already exists" % to_rel)
1088
file_id = inv.path2id(from_rel)
1090
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
1092
if inv.path2id(to_rel):
1093
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
1095
to_dir, to_tail = os.path.split(to_rel)
1096
to_dir_id = inv.path2id(to_dir)
1097
if to_dir_id == None and to_dir != '':
1098
raise BzrError("can't determine destination directory id for %r" % to_dir)
1100
mutter("rename_one:")
1101
mutter(" file_id {%s}" % file_id)
1102
mutter(" from_rel %r" % from_rel)
1103
mutter(" to_rel %r" % to_rel)
1104
mutter(" to_dir %r" % to_dir)
1105
mutter(" to_dir_id {%s}" % to_dir_id)
1107
inv.rename(file_id, to_dir_id, to_tail)
1109
from_abs = self.abspath(from_rel)
1110
to_abs = self.abspath(to_rel)
1112
rename(from_abs, to_abs)
1114
raise BzrError("failed to rename %r to %r: %s"
1115
% (from_abs, to_abs, e[1]),
1116
["rename rolled back"])
1118
self._write_inventory(inv)
1123
def move(self, from_paths, to_name):
1126
to_name must exist as a versioned directory.
1128
If to_name exists and is a directory, the files are moved into
1129
it, keeping their old names. If it is a directory,
1131
Note that to_name is only the last component of the new name;
1132
this doesn't change the directory.
1134
This returns a list of (from_path, to_path) pairs for each
1135
entry that is moved.
1140
## TODO: Option to move IDs only
1141
assert not isinstance(from_paths, basestring)
1142
tree = self.working_tree()
1143
inv = tree.inventory
1144
to_abs = self.abspath(to_name)
1145
if not isdir(to_abs):
1146
raise BzrError("destination %r is not a directory" % to_abs)
1147
if not tree.has_filename(to_name):
1148
raise BzrError("destination %r not in working directory" % to_abs)
1149
to_dir_id = inv.path2id(to_name)
1150
if to_dir_id == None and to_name != '':
1151
raise BzrError("destination %r is not a versioned directory" % to_name)
1152
to_dir_ie = inv[to_dir_id]
1153
if to_dir_ie.kind not in ('directory', 'root_directory'):
1154
raise BzrError("destination %r is not a directory" % to_abs)
1156
to_idpath = inv.get_idpath(to_dir_id)
1158
for f in from_paths:
1159
if not tree.has_filename(f):
1160
raise BzrError("%r does not exist in working tree" % f)
1161
f_id = inv.path2id(f)
1163
raise BzrError("%r is not versioned" % f)
1164
name_tail = splitpath(f)[-1]
1165
dest_path = appendpath(to_name, name_tail)
1166
if tree.has_filename(dest_path):
1167
raise BzrError("destination %r already exists" % dest_path)
1168
if f_id in to_idpath:
1169
raise BzrError("can't move %r to a subdirectory of itself" % f)
1171
# OK, so there's a race here, it's possible that someone will
1172
# create a file in this interval and then the rename might be
1173
# left half-done. But we should have caught most problems.
1175
for f in from_paths:
1176
name_tail = splitpath(f)[-1]
1177
dest_path = appendpath(to_name, name_tail)
1178
result.append((f, dest_path))
1179
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1181
rename(self.abspath(f), self.abspath(dest_path))
1183
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1184
["rename rolled back"])
1186
self._write_inventory(inv)
1193
def revert(self, filenames, old_tree=None, backups=True):
1194
"""Restore selected files to the versions from a previous tree.
1197
If true (default) backups are made of files before
1200
from bzrlib.errors import NotVersionedError, BzrError
1201
from bzrlib.atomicfile import AtomicFile
1202
from bzrlib.osutils import backup_file
1204
inv = self.read_working_inventory()
1205
if old_tree is None:
1206
old_tree = self.basis_tree()
1207
old_inv = old_tree.inventory
1210
for fn in filenames:
1211
file_id = inv.path2id(fn)
1213
raise NotVersionedError("not a versioned file", fn)
1214
if not old_inv.has_id(file_id):
1215
raise BzrError("file not present in old tree", fn, file_id)
1216
nids.append((fn, file_id))
1218
# TODO: Rename back if it was previously at a different location
1220
# TODO: If given a directory, restore the entire contents from
1221
# the previous version.
1223
# TODO: Make a backup to a temporary file.
1225
# TODO: If the file previously didn't exist, delete it?
1226
for fn, file_id in nids:
1229
f = AtomicFile(fn, 'wb')
1231
f.write(old_tree.get_file(file_id).read())
1237
def pending_merges(self):
1238
"""Return a list of pending merges.
1240
These are revisions that have been merged into the working
1241
directory but not yet committed.
1243
cfn = self._rel_controlfilename('pending-merges')
1244
if not self._transport.has(cfn):
1247
for l in self.controlfile('pending-merges', 'r').readlines():
1248
p.append(l.rstrip('\n'))
1252
def add_pending_merge(self, *revision_ids):
1253
# TODO: Perhaps should check at this point that the
1254
# history of the revision is actually present?
1255
p = self.pending_merges()
1257
for rev_id in revision_ids:
1263
self.set_pending_merges(p)
1265
def set_pending_merges(self, rev_list):
1268
self.put_controlfile('pending-merges', '\n'.join(rev_list))
1273
def get_parent(self):
1274
"""Return the parent location of the branch.
1276
This is the default location for push/pull/missing. The usual
1277
pattern is that the user can override it by specifying a
1281
_locs = ['parent', 'pull', 'x-pull']
1284
return self.controlfile(l, 'r').read().strip('\n')
1286
if e.errno != errno.ENOENT:
1291
def set_parent(self, url):
1292
# TODO: Maybe delete old location files?
1293
from bzrlib.atomicfile import AtomicFile
1296
f = AtomicFile(self.controlfilename('parent'))
1305
def check_revno(self, revno):
1307
Check whether a revno corresponds to any revision.
1308
Zero (the NULL revision) is considered valid.
1311
self.check_real_revno(revno)
1313
def check_real_revno(self, revno):
1315
Check whether a revno corresponds to a real revision.
1316
Zero (the NULL revision) is considered invalid
1318
if revno < 1 or revno > self.revno():
1319
raise InvalidRevisionNumber(revno)
1325
class ScratchBranch(_Branch):
719
1326
"""Special test class: a branch that cleans up after itself.
721
1328
>>> b = ScratchBranch()
722
1329
>>> isdir(b.base)
729
def __init__(self, files = []):
1336
def __init__(self, files=[], dirs=[], base=None):
730
1337
"""Make a test branch.
732
1339
This creates a temporary directory and runs init-tree in it.
734
1341
If any files are listed, they are created in the working copy.
736
Branch.__init__(self, tempfile.mkdtemp(), init=True)
1343
from tempfile import mkdtemp
1348
if isinstance(base, basestring):
1349
base = get_transport(base)
1350
_Branch.__init__(self, base, init=init)
1352
self._transport.mkdir(d)
738
file(os.path.join(self.base, f), 'w').write('content of %s' % f)
1355
self._transport.put(f, 'content of %s' % f)
1360
>>> orig = ScratchBranch(files=["file1", "file2"])
1361
>>> clone = orig.clone()
1362
>>> if os.name != 'nt':
1363
... os.path.samefile(orig.base, clone.base)
1365
... orig.base == clone.base
1368
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1371
from shutil import copytree
1372
from tempfile import mkdtemp
1375
copytree(self.base, base, symlinks=True)
1376
return ScratchBranch(base=base)
741
1378
def __del__(self):
742
1382
"""Destroy the test branch, removing the scratch directory."""
743
shutil.rmtree(self.base)
1383
from shutil import rmtree
1386
mutter("delete ScratchBranch %s" % self.base)
1389
# Work around for shutil.rmtree failing on Windows when
1390
# readonly files are encountered
1391
mutter("hit exception in destroying ScratchBranch: %s" % e)
1392
for root, dirs, files in os.walk(self.base, topdown=False):
1394
os.chmod(os.path.join(root, name), 0700)
1396
self._transport = None