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# Copyright (C) 2005 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""RevisionTree - a Tree implementation backed by repository data for a revision."""
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from cStringIO import StringIO
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from bzrlib.tree import Tree
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class RevisionTree(Tree):
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"""Tree viewing a previous revision.
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File text can be retrieved from the text store.
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TODO: Some kind of `__repr__` method, but a good one
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probably means knowing the branch and revision number,
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or at least passing a description to the constructor.
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def __init__(self, branch, inv, revision_id):
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# for compatability the 'branch' parameter has not been renamed to
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# repository at this point. However, we should change RevisionTree's
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# construction to always be via Repository and not via direct
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# construction - this will mean that we can change the constructor
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# with much less chance of breaking client code.
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self._repository = branch
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self._weave_store = branch.weave_store
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assert inv.root is not None
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self._revision_id = revision_id
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def get_parent_ids(self):
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"""See Tree.get_parent_ids.
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A RevisionTree's parents match the revision graph.
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if self._revision_id not in (None, 'null:'):
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parent_ids = self._repository.get_revision(
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self._revision_id).parent_ids
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def get_revision_id(self):
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"""Return the revision id associated with this tree."""
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return self._revision_id
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def get_weave(self, file_id):
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return self._weave_store.get_weave(file_id,
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self._repository.get_transaction())
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def get_file_lines(self, file_id):
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ie = self._inventory[file_id]
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weave = self.get_weave(file_id)
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return weave.get_lines(ie.revision)
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def get_file_text(self, file_id):
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return ''.join(self.get_file_lines(file_id))
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def get_file(self, file_id):
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return StringIO(self.get_file_text(file_id))
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def get_file_size(self, file_id):
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return self._inventory[file_id].text_size
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def get_file_sha1(self, file_id, path=None):
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ie = self._inventory[file_id]
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def get_file_mtime(self, file_id, path=None):
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ie = self._inventory[file_id]
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revision = self._repository.get_revision(ie.revision)
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return revision.timestamp
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def is_executable(self, file_id, path=None):
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ie = self._inventory[file_id]
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return self._inventory[file_id].executable
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def has_filename(self, filename):
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return bool(self.inventory.path2id(filename))
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def list_files(self):
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# The only files returned by this are those from the version
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entries = self.inventory.iter_entries()
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# skip the root for compatability with the current apis.
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for path, entry in entries:
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yield path, 'V', entry.kind, entry.file_id, entry
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def get_symlink_target(self, file_id):
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ie = self._inventory[file_id]
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return ie.symlink_target;
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def kind(self, file_id):
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return self._inventory[file_id].kind
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self._repository.lock_read()
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self._repository.unlock()
added
removed
bzrlib/revisiontree.py
