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# Copyright (C) 2006-2010 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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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class RevisionTree(tree.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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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._revision_id = revision_id
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self._rules_searcher = None
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def supports_tree_reference(self):
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return getattr(self._repository._format, "supports_tree_reference",
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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 in (None, revision.NULL_REVISION):
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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_file_text(self, file_id, path=None):
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_, content = list(self.iter_files_bytes([(file_id, None)]))[0]
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return ''.join(content)
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def get_file(self, file_id, path=None):
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return StringIO(self.get_file_text(file_id))
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def iter_files_bytes(self, desired_files):
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"""See Tree.iter_files_bytes.
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This version is implemented on top of Repository.extract_files_bytes"""
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repo_desired_files = [(f, self.inventory[f].revision, i)
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for f, i in desired_files]
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for result in self._repository.iter_files_bytes(repo_desired_files):
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except errors.RevisionNotPresent, e:
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raise errors.NoSuchFile(e.revision_id)
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def annotate_iter(self, file_id,
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default_revision=revision.CURRENT_REVISION):
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"""See Tree.annotate_iter"""
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text_key = (file_id, self.inventory[file_id].revision)
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annotator = self._repository.texts.get_annotator()
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annotations = annotator.annotate_flat(text_key)
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return [(key[-1], line) for key, line in annotations]
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def get_file_size(self, file_id):
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"""See Tree.get_file_size"""
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return self._inventory[file_id].text_size
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def get_file_sha1(self, file_id, path=None, stat_value=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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except errors.NoSuchRevision:
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raise errors.FileTimestampUnavailable(self.id2path(file_id))
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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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if ie.kind != "file":
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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, include_root=False, from_dir=None, recursive=True):
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# The only files returned by this are those from the version
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from_dir_id = inv.path2id(from_dir)
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if from_dir_id is None:
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# Directory not versioned
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entries = inv.iter_entries(from_dir=from_dir_id, recursive=recursive)
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if inv.root is not None and not include_root and from_dir is None:
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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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# Inventories store symlink targets in unicode
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return ie.symlink_target
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def get_reference_revision(self, file_id, path=None):
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return self.inventory[file_id].reference_revision
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def get_root_id(self):
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if self.inventory.root:
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return self.inventory.root.file_id
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def kind(self, file_id):
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return self._inventory[file_id].kind
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def path_content_summary(self, path):
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"""See Tree.path_content_summary."""
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id = self.inventory.path2id(path)
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return ('missing', None, None, None)
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entry = self._inventory[id]
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return (kind, entry.text_size, entry.executable, entry.text_sha1)
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elif kind == 'symlink':
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return (kind, None, None, entry.symlink_target)
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return (kind, None, None, None)
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def _comparison_data(self, entry, path):
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return None, False, None
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return entry.kind, entry.executable, None
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def _file_size(self, entry, stat_value):
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return entry.text_size
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def _get_ancestors(self, default_revision):
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return set(self._repository.get_ancestry(self._revision_id,
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return self._repository.is_locked()
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self._repository.lock_read()
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return '<%s instance at %x, rev_id=%r>' % (
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self.__class__.__name__, id(self), self._revision_id)
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self._repository.unlock()
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def walkdirs(self, prefix=""):
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_directory = 'directory'
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top_id = inv.path2id(prefix)
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pending = [(prefix, '', _directory, None, top_id, None)]
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currentdir = pending.pop()
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# 0 - relpath, 1- basename, 2- kind, 3- stat, id, v-kind
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relroot = currentdir[0] + '/'
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# FIXME: stash the node in pending
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entry = inv[currentdir[4]]
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for name, child in entry.sorted_children():
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toppath = relroot + name
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dirblock.append((toppath, name, child.kind, None,
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child.file_id, child.kind
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yield (currentdir[0], entry.file_id), dirblock
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# push the user specified dirs from dirblock
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for dir in reversed(dirblock):
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if dir[2] == _directory:
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def _get_rules_searcher(self, default_searcher):
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"""See Tree._get_rules_searcher."""
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if self._rules_searcher is None:
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self._rules_searcher = super(RevisionTree,
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self)._get_rules_searcher(default_searcher)
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return self._rules_searcher
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class InterCHKRevisionTree(tree.InterTree):
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"""Fast path optimiser for RevisionTrees with CHK inventories."""
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def is_compatible(source, target):
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if (isinstance(source, RevisionTree)
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and isinstance(target, RevisionTree)):
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# Only CHK inventories have id_to_entry attribute
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source.inventory.id_to_entry
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target.inventory.id_to_entry
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except AttributeError:
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def iter_changes(self, include_unchanged=False,
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specific_files=None, pb=None, extra_trees=[],
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require_versioned=True, want_unversioned=False):
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lookup_trees = [self.source]
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lookup_trees.extend(extra_trees)
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# The ids of items we need to examine to insure delta consistency.
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precise_file_ids = set()
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discarded_changes = {}
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if specific_files == []:
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specific_file_ids = []
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specific_file_ids = self.target.paths2ids(specific_files,
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lookup_trees, require_versioned=require_versioned)
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# FIXME: It should be possible to delegate include_unchanged handling
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# to CHKInventory.iter_changes and do a better job there -- vila
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changed_file_ids = set()
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for result in self.target.inventory.iter_changes(self.source.inventory):
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if specific_file_ids is not None:
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if file_id not in specific_file_ids:
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# A change from the whole tree that we don't want to show yet.
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# We may find that we need to show it for delta consistency, so
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discarded_changes[result[0]] = result
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new_parent_id = result[4][1]
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precise_file_ids.add(new_parent_id)
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changed_file_ids.add(result[0])
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if specific_file_ids is not None:
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for result in self._handle_precise_ids(precise_file_ids,
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changed_file_ids, discarded_changes=discarded_changes):
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if include_unchanged:
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# CHKMap avoid being O(tree), so we go to O(tree) only if
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# Now walk the whole inventory, excluding the already yielded
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changed_file_ids = set(changed_file_ids)
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for relpath, entry in self.target.inventory.iter_entries():
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if (specific_file_ids is not None
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and not entry.file_id in specific_file_ids):
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if not entry.file_id in changed_file_ids:
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yield (entry.file_id,
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(relpath, relpath), # Not renamed
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False, # Not modified
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(True, True), # Still versioned
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(entry.parent_id, entry.parent_id),
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(entry.name, entry.name),
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(entry.kind, entry.kind),
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(entry.executable, entry.executable))
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tree.InterTree.register_optimiser(InterCHKRevisionTree)
added
removed
bzrlib/revisiontree.py
