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- Committer: Canonical.com Patch Queue Manager
- Date: 2006-12-02 04:45:19 UTC
- mfrom: (2012.1.18 tree-compare)
- Revision ID: pqm@pqm.ubuntu.com-20061202044519-b51893edd371d01d
New low-level interface for determining differences between trees
added
removed
bzrlib/transform.py
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def get_backup_name(entry, by_parent, parent_trans_id, tt):
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return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
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def _get_backup_name(name, by_parent, parent_trans_id, tt):
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"""Produce a backup-style name that appears to be available"""
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def name_gen():
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counter = 1
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while True:
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yield "%s.~%d~" % (entry.name, counter)
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yield "%s.~%d~" % (name, counter)
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counter += 1
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for name in name_gen():
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if not tt.has_named_child(by_parent, parent_trans_id, name):
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return name
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for new_name in name_gen():
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if not tt.has_named_child(by_parent, parent_trans_id, new_name):
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return new_name
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def _entry_changes(file_id, entry, working_tree):
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"""Determine in which ways the inventory entry has changed.
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pb=DummyProgress()):
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"""Revert a working tree's contents to those of a target tree."""
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interesting_ids = find_interesting(working_tree, target_tree, filenames)
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def interesting(file_id):
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return interesting_ids is None or (file_id in interesting_ids)
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tt = TreeTransform(working_tree, pb)
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try:
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merge_modified = working_tree.merge_modified()
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trans_id = {}
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def trans_id_file_id(file_id):
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try:
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return trans_id[file_id]
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except KeyError:
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return tt.trans_id_tree_file_id(file_id)
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pp = ProgressPhase("Revert phase", 4, pb)
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pp.next_phase()
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sorted_interesting = [i for i in topology_sorted_ids(target_tree) if
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interesting(i)]
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child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
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try:
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by_parent = tt.by_parent()
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for id_num, file_id in enumerate(sorted_interesting):
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child_pb.update("Reverting file", id_num+1,
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len(sorted_interesting))
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if file_id not in working_tree.inventory:
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entry = target_tree.inventory[file_id]
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parent_id = trans_id_file_id(entry.parent_id)
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e_trans_id = new_by_entry(tt, entry, parent_id, target_tree)
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trans_id[file_id] = e_trans_id
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else:
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backup_this = backups
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if file_id in merge_modified:
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backup_this = False
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del merge_modified[file_id]
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change_entry(tt, file_id, working_tree, target_tree,
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trans_id_file_id, backup_this, trans_id,
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by_parent)
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finally:
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child_pb.finished()
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pp.next_phase()
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wt_interesting = [i for i in working_tree.inventory if interesting(i)]
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child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
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basis_tree = None
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try:
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for id_num, file_id in enumerate(wt_interesting):
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if (working_tree.inventory.is_root(file_id) and
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len(target_tree.inventory) == 0):
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continue
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child_pb.update("New file check", id_num+1,
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len(sorted_interesting))
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if file_id not in target_tree:
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trans_id = tt.trans_id_tree_file_id(file_id)
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tt.unversion_file(trans_id)
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try:
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file_kind = working_tree.kind(file_id)
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except NoSuchFile:
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file_kind = None
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delete_merge_modified = (file_id in merge_modified)
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if file_kind != 'file' and file_kind is not None:
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keep_contents = False
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else:
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if basis_tree is None:
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basis_tree = working_tree.basis_tree()
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wt_sha1 = working_tree.get_file_sha1(file_id)
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if (file_id in merge_modified and
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merge_modified[file_id] == wt_sha1):
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keep_contents = False
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elif (file_id in basis_tree and
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basis_tree.get_file_sha1(file_id) == wt_sha1):
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keep_contents = False
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else:
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keep_contents = True
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if not keep_contents:
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tt.delete_contents(trans_id)
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if delete_merge_modified:
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del merge_modified[file_id]
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pp = ProgressPhase("Revert phase", 3, pb)
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pp.next_phase()
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child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
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try:
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_alter_files(working_tree, target_tree, tt, child_pb,
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interesting_ids, backups)
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finally:
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child_pb.finished()
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pp.next_phase()
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return conflicts
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def _alter_files(working_tree, target_tree, tt, pb, interesting_ids, backups):
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merge_modified = working_tree.merge_modified()
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iterator = target_tree._iter_changes(working_tree,
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specific_file_ids=interesting_ids,
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pb=pb)
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if target_tree.inventory.root is None:
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skip_root = True
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else:
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skip_root = False
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basis_tree = None
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for id_num, (file_id, path, changed_content, versioned, parent, name, kind,
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executable) in enumerate(iterator):
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if skip_root and file_id[0] is not None and parent[0] is None:
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continue
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trans_id = tt.trans_id_file_id(file_id)
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mode_id = None
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if changed_content:
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keep_content = False
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if kind[0] == 'file' and (backups or kind[1] is None):
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wt_sha1 = working_tree.get_file_sha1(file_id)
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if merge_modified.get(file_id) != wt_sha1:
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if basis_tree is None:
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basis_tree = working_tree.basis_tree()
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if file_id in basis_tree:
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if wt_sha1 != basis_tree.get_file_sha1(file_id):
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keep_content = True
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elif kind[1] is None and not versioned[1]:
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keep_content = True
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if kind[0] is not None:
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if not keep_content:
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tt.delete_contents(trans_id)
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elif kind[1] is not None:
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parent_trans_id = tt.trans_id_file_id(parent[0])
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by_parent = tt.by_parent()
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backup_name = _get_backup_name(name[0], by_parent,
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parent_trans_id, tt)
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tt.adjust_path(backup_name, parent_trans_id, trans_id)
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new_trans_id = tt.create_path(name[0], parent_trans_id)
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if versioned == (True, True):
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tt.unversion_file(trans_id)
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tt.version_file(file_id, new_trans_id)
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mode_id = trans_id
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trans_id = new_trans_id
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if kind[1] == 'directory':
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tt.create_directory(trans_id)
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elif kind[1] == 'symlink':
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tt.create_symlink(target_tree.get_symlink_target(file_id),
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trans_id)
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elif kind[1] == 'file':
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tt.create_file(target_tree.get_file_lines(file_id),
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trans_id)
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if executable[0] != executable[1]:
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tt.set_executability(executable[1], trans_id)
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else:
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assert kind[1] is None
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if versioned == (False, True):
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tt.version_file(file_id, trans_id)
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if versioned == (True, False):
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tt.unversion_file(trans_id)
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if (name[1] is not None and
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(name[0] != name[1] or parent[0] != parent[1])):
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tt.adjust_path(name[1], tt.trans_id_file_id(parent[1]), trans_id)
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def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
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"""Make many conflict-resolution attempts, but die if they fail"""
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if pass_func is None:
Loggerhead is a web-based interface for Breezy
Version: 2.0.1