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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""WorkingTree object and friends.
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A WorkingTree represents the editable working copy of a branch.
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Operations which represent the WorkingTree are also done here,
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such as renaming or adding files. The WorkingTree has an inventory
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which is updated by these operations. A commit produces a
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new revision based on the workingtree and its inventory.
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At the moment every WorkingTree has its own branch. Remote
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WorkingTrees aren't supported.
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To get a WorkingTree, call Branch.working_tree():
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# TODO: Don't allow WorkingTrees to be constructed for remote branches if
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# FIXME: I don't know if writing out the cache from the destructor is really a
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# good idea, because destructors are considered poor taste in Python, and it's
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# not predictable when it will be written out.
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# TODO: Give the workingtree sole responsibility for the working inventory;
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# remove the variable and references to it from the branch. This may require
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# updating the commit code so as to update the inventory within the working
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# copy, and making sure there's only one WorkingTree for any directory on disk.
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# At the momenthey may alias the inventory and have old copies of it in memory.
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from bzrlib.branch import Branch, needs_read_lock, needs_write_lock, quotefn
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from errors import BzrCheckError
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from trace import mutter
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from bzrlib.osutils import (appendpath,
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from bzrlib.errors import BzrCheckError, DivergedBranches, NotVersionedError
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from bzrlib.trace import mutter
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class TreeEntry(object):
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"""An entry that implements the minium interface used by commands.
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This needs further inspection, it may be better to have
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InventoryEntries without ids - though that seems wrong. For now,
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this is a parallel hierarchy to InventoryEntry, and needs to become
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one of several things: decorates to that hierarchy, children of, or
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Another note is that these objects are currently only used when there is
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no InventoryEntry available - i.e. for unversioned objects.
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Perhaps they should be UnversionedEntry et al. ? - RBC 20051003
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def __eq__(self, other):
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# yes, this us ugly, TODO: best practice __eq__ style.
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return (isinstance(other, TreeEntry)
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and other.__class__ == self.__class__)
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def kind_character(self):
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class TreeDirectory(TreeEntry):
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"""See TreeEntry. This is a directory in a working tree."""
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def __eq__(self, other):
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return (isinstance(other, TreeDirectory)
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and other.__class__ == self.__class__)
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def kind_character(self):
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class TreeFile(TreeEntry):
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"""See TreeEntry. This is a regular file in a working tree."""
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def __eq__(self, other):
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return (isinstance(other, TreeFile)
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and other.__class__ == self.__class__)
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def kind_character(self):
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class TreeLink(TreeEntry):
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"""See TreeEntry. This is a symlink in a working tree."""
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def __eq__(self, other):
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return (isinstance(other, TreeLink)
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and other.__class__ == self.__class__)
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def kind_character(self):
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class WorkingTree(bzrlib.tree.Tree):
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"""Working copy tree.
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It is possible for a `WorkingTree` to have a filename which is
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not listed in the Inventory and vice versa.
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def __init__(self, basedir, inv):
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def __init__(self, basedir, branch=None):
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"""Construct a WorkingTree for basedir.
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If the branch is not supplied, it is opened automatically.
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If the branch is supplied, it must be the branch for this basedir.
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(branch.base is not cross checked, because for remote branches that
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would be meaningless).
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from bzrlib.hashcache import HashCache
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from bzrlib.trace import note, mutter
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assert isinstance(basedir, basestring), \
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"base directory %r is not a string" % basedir
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branch = Branch.open(basedir)
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assert isinstance(branch, Branch), \
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"branch %r is not a Branch" % branch
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self.basedir = basedir
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self.path2id = inv.path2id
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self._update_statcache()
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self._inventory = self.read_working_inventory()
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self.path2id = self._inventory.path2id
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# update the whole cache up front and write to disk if anything changed;
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# in the future we might want to do this more selectively
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# two possible ways offer themselves : in self._unlock, write the cache
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# if needed, or, when the cache sees a change, append it to the hash
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# cache file, and have the parser take the most recent entry for a
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hc = self._hashcache = HashCache(basedir)
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def __iter__(self):
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"""Iterate through file_ids for this tree.
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and the working file exists.
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inv = self._inventory
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for file_id in self._inventory:
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# TODO: This is slightly redundant; we should be able to just
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# check the statcache but it only includes regular files.
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# only include files which still exist on disk
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if ((file_id in self._statcache)
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or (os.path.exists(self.abspath(inv.id2path(file_id))))):
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for path, ie in inv.iter_entries():
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if bzrlib.osutils.lexists(self.abspath(path)):
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def __repr__(self):
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return "<%s of %s>" % (self.__class__.__name__,
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getattr(self, 'basedir', None))
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def abspath(self, filename):
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return os.path.join(self.basedir, filename)
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def relpath(self, abspath):
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"""Return the local path portion from a given absolute path."""
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return relpath(self.basedir, abspath)
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def has_filename(self, filename):
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return os.path.exists(self.abspath(filename))
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return bzrlib.osutils.lexists(self.abspath(filename))
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def get_file(self, file_id):
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return self.get_file_byname(self.id2path(file_id))
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def get_file_byname(self, filename):
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return file(self.abspath(filename), 'rb')
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def get_root_id(self):
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"""Return the id of this trees root"""
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inv = self.read_working_inventory()
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return inv.root.file_id
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def _get_store_filename(self, file_id):
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## XXX: badly named; this isn't in the store at all
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return self.abspath(self.id2path(file_id))
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def commit(self, *args, **kw):
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from bzrlib.commit import Commit
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Commit().commit(self.branch, *args, **kw)
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self._inventory = self.read_working_inventory()
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def id2abspath(self, file_id):
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return self.abspath(self.id2path(file_id))
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def has_id(self, file_id):
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# files that have been deleted are excluded
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if not self.inventory.has_id(file_id):
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inv = self._inventory
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if not inv.has_id(file_id):
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if file_id in self._statcache:
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path = inv.id2path(file_id)
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return bzrlib.osutils.lexists(self.abspath(path))
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def has_or_had_id(self, file_id):
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if file_id == self.inventory.root.file_id:
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return os.path.exists(self.abspath(self.id2path(file_id)))
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return self.inventory.has_id(file_id)
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__contains__ = has_id
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def _update_statcache(self):
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if not self._statcache:
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self._statcache = statcache.update_cache(self.basedir, self.inventory)
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def get_file_size(self, file_id):
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return os.stat(self._get_store_filename(file_id))[stat.ST_SIZE]
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return os.path.getsize(self.id2abspath(file_id))
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def get_file_sha1(self, file_id):
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return self._statcache[file_id][statcache.SC_SHA1]
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path = self._inventory.id2path(file_id)
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return self._hashcache.get_sha1(path)
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def is_executable(self, file_id):
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return self._inventory[file_id].executable
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path = self._inventory.id2path(file_id)
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mode = os.lstat(self.abspath(path)).st_mode
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return bool(stat.S_ISREG(mode) and stat.S_IEXEC&mode)
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def add_pending_merge(self, *revision_ids):
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# TODO: Perhaps should check at this point that the
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# history of the revision is actually present?
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p = self.pending_merges()
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for rev_id in revision_ids:
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self.set_pending_merges(p)
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def pending_merges(self):
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"""Return a list of pending merges.
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These are revisions that have been merged into the working
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directory but not yet committed.
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cfn = self.branch._rel_controlfilename('pending-merges')
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if not self.branch._transport.has(cfn):
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for l in self.branch.controlfile('pending-merges', 'r').readlines():
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p.append(l.rstrip('\n'))
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def set_pending_merges(self, rev_list):
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self.branch.put_controlfile('pending-merges', '\n'.join(rev_list))
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def get_symlink_target(self, file_id):
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return os.readlink(self.id2abspath(file_id))
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def file_class(self, filename):
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if self.path2id(filename):
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if not self.is_ignored(subp):
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def iter_conflicts(self):
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for path in (s[0] for s in self.list_files()):
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stem = get_conflicted_stem(path)
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if stem not in conflicted:
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def pull(self, source, overwrite=False):
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from bzrlib.merge import merge_inner
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old_revision_history = self.branch.revision_history()
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self.branch.pull(source, overwrite)
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new_revision_history = self.branch.revision_history()
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if new_revision_history != old_revision_history:
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if len(old_revision_history):
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other_revision = old_revision_history[-1]
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other_revision = None
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merge_inner(self.branch,
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self.branch.basis_tree(),
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self.branch.revision_tree(other_revision))
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def extras(self):
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"""Yield all unknown files in this WorkingTree.
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def kind(self, file_id):
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return file_kind(self.id2abspath(file_id))
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"""See Branch.lock_read, and WorkingTree.unlock."""
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return self.branch.lock_read()
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def lock_write(self):
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"""See Branch.lock_write, and WorkingTree.unlock."""
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return self.branch.lock_write()
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def read_working_inventory(self):
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"""Read the working inventory."""
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# ElementTree does its own conversion from UTF-8, so open in
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f = self.branch.controlfile('inventory', 'rb')
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return bzrlib.xml5.serializer_v5.read_inventory(f)
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def remove(self, files, verbose=False):
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"""Remove nominated files from the working inventory..
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This does not remove their text. This does not run on XXX on what? RBC
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TODO: Refuse to remove modified files unless --force is given?
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TODO: Do something useful with directories.
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TODO: Should this remove the text or not? Tough call; not
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removing may be useful and the user can just use use rm, and
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is the opposite of add. Removing it is consistent with most
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other tools. Maybe an option.
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## TODO: Normalize names
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## TODO: Remove nested loops; better scalability
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if isinstance(files, basestring):
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# do this before any modifications
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# TODO: Perhaps make this just a warning, and continue?
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# This tends to happen when
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raise NotVersionedError(path=f)
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mutter("remove inventory entry %s {%s}", quotefn(f), fid)
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# having remove it, it must be either ignored or unknown
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if self.is_ignored(f):
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show_status(new_status, inv[fid].kind, quotefn(f))
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self._write_inventory(inv)
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def revert(self, filenames, old_tree=None, backups=True):
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from bzrlib.merge import merge_inner
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old_tree = self.branch.basis_tree()
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merge_inner(self.branch, old_tree,
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self, ignore_zero=True,
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backup_files=backups,
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interesting_files=filenames)
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if not len(filenames):
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self.set_pending_merges([])
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def set_inventory(self, new_inventory_list):
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from bzrlib.inventory import (Inventory,
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inv = Inventory(self.get_root_id())
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for path, file_id, parent, kind in new_inventory_list:
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name = os.path.basename(path)
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# fixme, there should be a factory function inv,add_??
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if kind == 'directory':
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inv.add(InventoryDirectory(file_id, name, parent))
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inv.add(InventoryFile(file_id, name, parent))
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elif kind == 'symlink':
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inv.add(InventoryLink(file_id, name, parent))
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raise BzrError("unknown kind %r" % kind)
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self._write_inventory(inv)
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def set_root_id(self, file_id):
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"""Set the root id for this tree."""
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inv = self.read_working_inventory()
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orig_root_id = inv.root.file_id
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del inv._byid[inv.root.file_id]
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inv.root.file_id = file_id
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inv._byid[inv.root.file_id] = inv.root
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if entry.parent_id in (None, orig_root_id):
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entry.parent_id = inv.root.file_id
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self._write_inventory(inv)
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"""See Branch.unlock.
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WorkingTree locking just uses the Branch locking facilities.
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This is current because all working trees have an embedded branch
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within them. IF in the future, we were to make branch data shareable
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between multiple working trees, i.e. via shared storage, then we
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would probably want to lock both the local tree, and the branch.
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return self.branch.unlock()
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def _write_inventory(self, inv):
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"""Write inventory as the current inventory."""
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from cStringIO import StringIO
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from bzrlib.atomicfile import AtomicFile
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bzrlib.xml5.serializer_v5.write_inventory(inv, sio)
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f = AtomicFile(self.branch.controlfilename('inventory'))
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mutter('wrote working inventory')
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CONFLICT_SUFFIXES = ('.THIS', '.BASE', '.OTHER')
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def get_conflicted_stem(path):
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for suffix in CONFLICT_SUFFIXES:
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if path.endswith(suffix):
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return path[:-len(suffix)]
added
removed
bzrlib/workingtree.py
