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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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# TODO: Don't allow WorkingTrees to be constructed for remote branches.
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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 copy import deepcopy
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# good idea, because destructors are considered poor taste in Python, and
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# it's not predictable when it will be written out.
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from bzrlib.branch import (Branch,
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from bzrlib.errors import (BzrCheckError,
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WeaveRevisionNotPresent,
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from bzrlib.inventory import InventoryEntry
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from bzrlib.osutils import (appendpath,
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from bzrlib.textui import show_status
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from bzrlib.osutils import appendpath, file_kind, isdir, splitpath
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from bzrlib.errors import BzrCheckError
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from bzrlib.trace import mutter
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def gen_file_id(name):
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"""Return new file id.
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This should probably generate proper UUIDs, but for the moment we
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cope with just randomness because running uuidgen every time is
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from binascii import hexlify
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idx = name.rfind('\\')
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# make it not a hidden file
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name = name.lstrip('.')
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# remove any wierd characters; we don't escape them but rather
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name = re.sub(r'[^\w.]', '', name)
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s = hexlify(rand_bytes(8))
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return '-'.join((name, compact_date(time()), s))
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"""Return a new tree-root file id."""
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return gen_file_id('TREE_ROOT')
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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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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=u'.', 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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def __init__(self, basedir, inv):
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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 = realpath(basedir)
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self._inventory = inv
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self.basedir = basedir
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self.path2id = inv.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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if hc.needs_write:
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mutter("write hc")
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self._set_inventory(self.read_working_inventory())
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def _set_inventory(self, inv):
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self._inventory = inv
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self.path2id = self._inventory.path2id
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def open_containing(path=None):
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"""Open an existing working tree which has its root about path.
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This probes for a working tree at path 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 /. If there isn't one, raises NotBranchError.
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TODO: give this a new exception.
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If there is one, it is returned, along with the unused portion of path.
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if path.find('://') != -1:
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raise NotBranchError(path=path)
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return WorkingTree(path), tail
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except NotBranchError:
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tail = pathjoin(os.path.basename(path), tail)
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tail = os.path.basename(path)
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path = os.path.dirname(path)
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# reached the root, whatever that may be
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raise NotBranchError(path=path)
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if self._hashcache.needs_write:
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self._hashcache.write()
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def __iter__(self):
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"""Iterate through file_ids for this tree.
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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 is not in the store at all
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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._set_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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inv = self._inventory
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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(self, files, ids=None):
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"""Make files versioned.
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Note that the command line normally calls smart_add instead,
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which can automatically recurse.
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This adds the files to the inventory, so that they will be
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recorded by the next commit.
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List of paths to add, relative to the base of the tree.
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If set, use these instead of automatically generated ids.
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Must be the same length as the list of files, but may
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contain None for ids that are to be autogenerated.
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TODO: Perhaps have an option to add the ids even if the files do
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TODO: Perhaps callback with the ids and paths as they're added.
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# TODO: Re-adding a file that is removed in the working copy
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# should probably put it back with the previous ID.
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if isinstance(files, basestring):
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assert(ids is None or isinstance(ids, basestring))
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ids = [None] * len(files)
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assert(len(ids) == len(files))
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inv = self.read_working_inventory()
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for f,file_id in zip(files, ids):
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if is_control_file(f):
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raise BzrError("cannot add control file %s" % quotefn(f))
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raise BzrError("cannot add top-level %r" % f)
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fullpath = normpath(self.abspath(f))
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kind = file_kind(fullpath)
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# maybe something better?
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raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
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if not InventoryEntry.versionable_kind(kind):
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raise BzrError('cannot add: not a versionable file ('
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'i.e. regular file, symlink or directory): %s' % quotefn(f))
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file_id = gen_file_id(f)
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inv.add_path(f, kind=kind, file_id=file_id)
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mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
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self._write_inventory(inv)
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def 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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for ff in descend(fp, f_ie.file_id, fap):
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for f in descend(u'', inv.root.file_id, self.basedir):
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for f in descend('', inv.root.file_id, self.basedir):
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def move(self, from_paths, to_name):
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to_name must exist in the inventory.
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If to_name exists and is a directory, the files are moved into
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it, keeping their old names.
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Note that to_name is only the last component of the new name;
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this doesn't change the directory.
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This returns a list of (from_path, to_path) pairs for each
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## TODO: Option to move IDs only
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assert not isinstance(from_paths, basestring)
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to_abs = self.abspath(to_name)
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if not isdir(to_abs):
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raise BzrError("destination %r is not a directory" % to_abs)
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if not self.has_filename(to_name):
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raise BzrError("destination %r not in working directory" % to_abs)
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to_dir_id = inv.path2id(to_name)
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if to_dir_id == None and to_name != '':
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raise BzrError("destination %r is not a versioned directory" % to_name)
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to_dir_ie = inv[to_dir_id]
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if to_dir_ie.kind not in ('directory', 'root_directory'):
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raise BzrError("destination %r is not a directory" % to_abs)
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to_idpath = inv.get_idpath(to_dir_id)
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if not self.has_filename(f):
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raise BzrError("%r does not exist in working tree" % f)
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f_id = inv.path2id(f)
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raise BzrError("%r is not versioned" % f)
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name_tail = splitpath(f)[-1]
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dest_path = appendpath(to_name, name_tail)
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if self.has_filename(dest_path):
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raise BzrError("destination %r already exists" % dest_path)
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if f_id in to_idpath:
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raise BzrError("can't move %r to a subdirectory of itself" % f)
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# OK, so there's a race here, it's possible that someone will
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# create a file in this interval and then the rename might be
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# left half-done. But we should have caught most problems.
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orig_inv = deepcopy(self.inventory)
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name_tail = splitpath(f)[-1]
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dest_path = appendpath(to_name, name_tail)
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result.append((f, dest_path))
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inv.rename(inv.path2id(f), to_dir_id, name_tail)
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rename(self.abspath(f), self.abspath(dest_path))
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raise BzrError("failed to rename %r to %r: %s" %
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(f, dest_path, e[1]),
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["rename rolled back"])
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# restore the inventory on error
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self._set_inventory(orig_inv)
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self._write_inventory(inv)
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def rename_one(self, from_rel, to_rel):
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This can change the directory or the filename or both.
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if not self.has_filename(from_rel):
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raise BzrError("can't rename: old working file %r does not exist" % from_rel)
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if self.has_filename(to_rel):
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raise BzrError("can't rename: new working file %r already exists" % to_rel)
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file_id = inv.path2id(from_rel)
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raise BzrError("can't rename: old name %r is not versioned" % from_rel)
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from_parent = entry.parent_id
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from_name = entry.name
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if inv.path2id(to_rel):
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raise BzrError("can't rename: new name %r is already versioned" % to_rel)
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to_dir, to_tail = os.path.split(to_rel)
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to_dir_id = inv.path2id(to_dir)
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if to_dir_id == None and to_dir != '':
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raise BzrError("can't determine destination directory id for %r" % to_dir)
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mutter("rename_one:")
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mutter(" file_id {%s}" % file_id)
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mutter(" from_rel %r" % from_rel)
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mutter(" to_rel %r" % to_rel)
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mutter(" to_dir %r" % to_dir)
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mutter(" to_dir_id {%s}" % to_dir_id)
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inv.rename(file_id, to_dir_id, to_tail)
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from_abs = self.abspath(from_rel)
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to_abs = self.abspath(to_rel)
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rename(from_abs, to_abs)
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inv.rename(file_id, from_parent, from_name)
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raise BzrError("failed to rename %r to %r: %s"
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% (from_abs, to_abs, e[1]),
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["rename rolled back"])
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self._write_inventory(inv)
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def unknowns(self):
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"""Return all unknown files.
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These are files in the working directory that are not versioned or
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control files or ignored.
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>>> from bzrlib.branch import ScratchBranch
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>>> b = ScratchBranch(files=['foo', 'foo~'])
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>>> tree = WorkingTree(b.base, b)
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>>> map(str, tree.unknowns())
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>>> list(b.unknowns())
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>>> tree.remove('foo')
648
>>> list(b.unknowns())
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for subp in self.extras():
652
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if not self.is_ignored(subp):
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def kind(self, file_id):
777
return file_kind(self.id2abspath(file_id))
780
"""See Branch.lock_read, and WorkingTree.unlock."""
781
return self.branch.lock_read()
783
def lock_write(self):
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"""See Branch.lock_write, and WorkingTree.unlock."""
785
return self.branch.lock_write()
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def _basis_inventory_name(self, revision_id):
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return 'basis-inventory.%s' % revision_id
790
def set_last_revision(self, new_revision, old_revision=None):
793
path = self._basis_inventory_name(old_revision)
794
path = self.branch._rel_controlfilename(path)
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self.branch._transport.delete(path)
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xml = self.branch.get_inventory_xml(new_revision)
800
path = self._basis_inventory_name(new_revision)
801
self.branch.put_controlfile(path, xml)
802
except WeaveRevisionNotPresent:
805
def read_basis_inventory(self, revision_id):
806
"""Read the cached basis inventory."""
807
path = self._basis_inventory_name(revision_id)
808
return self.branch.controlfile(path, 'r').read()
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def read_working_inventory(self):
812
"""Read the working inventory."""
813
# ElementTree does its own conversion from UTF-8, so open in
815
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):
820
"""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
830
is the opposite of add. Removing it is consistent with most
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other tools. Maybe an option.
833
## TODO: Normalize names
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## TODO: Remove nested loops; better scalability
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if isinstance(files, basestring):
840
# do this before any modifications
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# TODO: Perhaps make this just a warning, and continue?
845
# This tends to happen when
846
raise NotVersionedError(path=f)
847
mutter("remove inventory entry %s {%s}", quotefn(f), fid)
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# having remove it, it must be either ignored or unknown
850
if self.is_ignored(f):
854
show_status(new_status, inv[fid].kind, quotefn(f))
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self._write_inventory(inv)
860
def revert(self, filenames, old_tree=None, backups=True):
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from bzrlib.merge import merge_inner
863
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):
873
from bzrlib.inventory import (Inventory,
878
inv = Inventory(self.get_root_id())
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for path, file_id, parent, kind in new_inventory_list:
880
name = os.path.basename(path)
883
# fixme, there should be a factory function inv,add_??
884
if kind == 'directory':
885
inv.add(InventoryDirectory(file_id, name, parent))
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inv.add(InventoryFile(file_id, name, parent))
888
elif kind == 'symlink':
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inv.add(InventoryLink(file_id, name, parent))
891
raise BzrError("unknown kind %r" % kind)
892
self._write_inventory(inv)
895
def set_root_id(self, file_id):
896
"""Set the root id for this tree."""
897
inv = self.read_working_inventory()
898
orig_root_id = inv.root.file_id
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del inv._byid[inv.root.file_id]
900
inv.root.file_id = file_id
901
inv._byid[inv.root.file_id] = inv.root
904
if entry.parent_id in (None, orig_root_id):
905
entry.parent_id = inv.root.file_id
906
self._write_inventory(inv)
909
"""See Branch.unlock.
911
WorkingTree locking just uses the Branch locking facilities.
912
This is current because all working trees have an embedded branch
913
within them. IF in the future, we were to make branch data shareable
914
between multiple working trees, i.e. via shared storage, then we
915
would probably want to lock both the local tree, and the branch.
917
if self._hashcache.needs_write and self.branch._lock_count==1:
918
self._hashcache.write()
919
return self.branch.unlock()
922
def _write_inventory(self, inv):
923
"""Write inventory as the current inventory."""
924
from cStringIO import StringIO
925
from bzrlib.atomicfile import AtomicFile
927
bzrlib.xml5.serializer_v5.write_inventory(inv, sio)
929
f = AtomicFile(self.branch.controlfilename('inventory'))
935
self._set_inventory(inv)
936
mutter('wrote working inventory')
939
379
CONFLICT_SUFFIXES = ('.THIS', '.BASE', '.OTHER')
940
380
def get_conflicted_stem(path):
941
381
for suffix in CONFLICT_SUFFIXES:
added
removed
bzrlib/workingtree.py
