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# Copyright (C) 2005 Canonical Ltd
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# Copyright (C) 2005, 2006 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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import bzrlib.revision
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from bzrlib.merge_core import merge_flex, ApplyMerge3, BackupBeforeChange
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from bzrlib.merge_core import WeaveMerge
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from bzrlib.changeset import generate_changeset, ExceptionConflictHandler
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from bzrlib.changeset import Inventory, Diff3Merge, ReplaceContents
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revision as _mod_revision,
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from bzrlib.branch import Branch
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from bzrlib.conflicts import ConflictList, Conflict
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from bzrlib.errors import (BzrCommandError,
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WorkingTreeNotRevision,
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from bzrlib.delta import compare_trees
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WorkingTreeNotRevision,
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from bzrlib.merge3 import Merge3
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from bzrlib.osutils import rename, pathjoin
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from progress import DummyProgress, ProgressPhase
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from bzrlib.revision import (is_ancestor, NULL_REVISION, ensure_null)
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from bzrlib.textfile import check_text_lines
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from bzrlib.trace import mutter, warning, note
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from bzrlib.fetch import greedy_fetch, fetch
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from bzrlib.revision import is_ancestor, NULL_REVISION
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from bzrlib.osutils import rename, pathjoin
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from bzrlib.revision import common_ancestor, MultipleRevisionSources
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from bzrlib.errors import NoSuchRevision
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from bzrlib.transform import (TreeTransform, resolve_conflicts, cook_conflicts,
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conflict_pass, FinalPaths, create_by_entry,
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unique_add, ROOT_PARENT)
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from bzrlib.versionedfile import PlanWeaveMerge
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# TODO: Report back as changes are merged in
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# TODO: build_working_dir can be built on something simpler than merge()
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# FIXME: merge() parameters seem oriented towards the command line
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# NOTABUG: merge is a helper for commandline functions. merge_inner is the
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# the core functionality.
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# comments from abentley on irc: merge happens in two stages, each
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# of which generates a changeset object
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# stage 1: generate OLD->OTHER,
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# stage 2: use MINE and OLD->OTHER to generate MINE -> RESULT
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class MergeConflictHandler(ExceptionConflictHandler):
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"""Handle conflicts encountered while merging.
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This subclasses ExceptionConflictHandler, so that any types of
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conflict that are not explicitly handled cause an exception and
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def __init__(self, this_tree, base_tree, other_tree, ignore_zero=False):
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ExceptionConflictHandler.__init__(self)
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self.ignore_zero = ignore_zero
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self.this_tree = this_tree
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self.base_tree = base_tree
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self.other_tree = other_tree
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def copy(self, source, dest):
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"""Copy the text and mode of a file
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:param source: The path of the file to copy
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:param dest: The distination file to create
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s_file = file(source, "rb")
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d_file = file(dest, "wb")
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os.chmod(dest, 0777 & os.stat(source).st_mode)
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def dump(self, lines, dest):
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"""Copy the text and mode of a file
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:param source: The path of the file to copy
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:param dest: The distination file to create
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d_file = file(dest, "wb")
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def add_suffix(self, name, suffix, last_new_name=None, fix_inventory=True):
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"""Rename a file to append a suffix. If the new name exists, the
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suffix is added repeatedly until a non-existant name is found
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:param name: The path of the file
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:param suffix: The suffix to append
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:param last_new_name: (used for recursive calls) the last name tried
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if last_new_name is None:
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new_name = last_new_name+suffix
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rename(name, new_name)
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if fix_inventory is True:
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relpath = self.this_tree.relpath(name)
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except NotBranchError:
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if relpath is not None:
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file_id = self.this_tree.path2id(relpath)
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if file_id is not None:
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new_path = self.this_tree.relpath(new_name)
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rename(new_name, name)
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self.this_tree.rename_one(relpath, new_path)
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assert self.this_tree.id2path(file_id) == new_path
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if e.errno != errno.EEXIST and e.errno != errno.ENOTEMPTY:
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return self.add_suffix(name, suffix, last_new_name=new_name,
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fix_inventory=fix_inventory)
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def conflict(self, text):
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def merge_conflict(self, new_file, this_path, base_lines, other_lines):
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Handle diff3 conflicts by producing a .THIS, .BASE and .OTHER. The
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main file will be a version with diff3 conflicts.
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:param new_file: Path to the output file with diff3 markers
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:param this_path: Path to the file text for the THIS tree
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:param base_path: Path to the file text for the BASE tree
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:param other_path: Path to the file text for the OTHER tree
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self.add_suffix(this_path, ".THIS", fix_inventory=False)
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self.dump(base_lines, this_path+".BASE")
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self.dump(other_lines, this_path+".OTHER")
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rename(new_file, this_path)
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self.conflict("Diff3 conflict encountered in %s" % this_path)
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def weave_merge_conflict(self, filename, weave, other_i, out_file):
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Handle weave conflicts by producing a .THIS, and .OTHER. The
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main file will be a version with diff3-style conflicts.
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self.add_suffix(filename, ".THIS", fix_inventory=False)
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self.dump(weave.get_iter(other_i), filename+".OTHER")
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self.conflict("Text conflict encountered in %s" % filename)
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def new_contents_conflict(self, filename, other_contents):
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"""Conflicting contents for newly added file."""
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other_contents(filename + ".OTHER", self, False)
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self.conflict("Conflict in newly added file %s" % filename)
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def target_exists(self, entry, target, old_path):
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"""Handle the case when the target file or dir exists"""
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moved_path = self.add_suffix(target, ".moved")
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self.conflict("Moved existing %s to %s" % (target, moved_path))
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def rmdir_non_empty(self, filename):
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"""Handle the case where the dir to be removed still has contents"""
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self.conflict("Directory %s not removed because it is not empty"\
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def rem_contents_conflict(self, filename, this_contents, base_contents):
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base_contents(filename+".BASE", self)
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this_contents(filename+".THIS", self)
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self.conflict("Other branch deleted locally modified file %s" %
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return ReplaceContents(this_contents, None)
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def abs_this_path(self, file_id):
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"""Return the absolute path for a file_id in the this tree."""
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return self.this_tree.id2abspath(file_id)
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def add_missing_parents(self, file_id, tree):
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"""If some of the parents for file_id are missing, add them."""
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entry = tree.inventory[file_id]
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if entry.parent_id not in self.this_tree:
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return self.create_all_missing(entry.parent_id, tree)
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return self.abs_this_path(entry.parent_id)
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def create_all_missing(self, file_id, tree):
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"""Add contents for a file_id and all its parents to a tree."""
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entry = tree.inventory[file_id]
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if entry.parent_id is not None and entry.parent_id not in self.this_tree:
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abspath = self.create_all_missing(entry.parent_id, tree)
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abspath = self.abs_this_path(entry.parent_id)
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entry_path = pathjoin(abspath, entry.name)
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if not os.path.isdir(entry_path):
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self.create(file_id, entry_path, tree)
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def create(self, file_id, path, tree):
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"""Uses tree data to create a filesystem object for the file_id"""
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from changeset import get_contents
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get_contents(tree, file_id)(path, self)
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def missing_for_merge(self, file_id, other_path):
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"""The file_id doesn't exist in THIS, but does in OTHER and BASE"""
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self.conflict("Other branch modified locally deleted file %s" %
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parent_dir = self.add_missing_parents(file_id, self.other_tree)
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stem = pathjoin(parent_dir, os.path.basename(other_path))
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self.create(file_id, stem+".OTHER", self.other_tree)
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self.create(file_id, stem+".BASE", self.base_tree)
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def threeway_contents_conflict(filename, this_contents, base_contents,
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self.conflict("Three-way conflict merging %s" % filename)
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if self.conflicts == 0:
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if not self.ignore_zero:
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note("All changes applied successfully.")
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note("%d conflicts encountered." % self.conflicts)
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def get_tree(treespec, local_branch=None):
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location, revno = treespec
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branch = Branch.open_containing(location)[0]
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revision = branch.last_revision()
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revision = branch.get_rev_id(revno)
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revision = NULL_REVISION
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return branch, get_revid_tree(branch, revision, local_branch)
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def get_revid_tree(branch, revision, local_branch):
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base_tree = branch.working_tree()
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if local_branch is not None:
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greedy_fetch(local_branch, branch, revision)
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base_tree = local_branch.revision_tree(revision)
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base_tree = branch.revision_tree(revision)
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def file_exists(tree, file_id):
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return tree.has_filename(tree.id2path(file_id))
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def build_working_dir(to_dir):
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"""Build a working directory in an empty directory.
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to_dir is a directory containing branch metadata but no working files,
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typically constructed by cloning an existing branch.
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This is split out as a special idiomatic case of merge. It could
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eventually be done by just building the tree directly calling into
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lower-level code (e.g. constructing a changeset).
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# RBC 20051019 is this not just 'export' ?
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# AB Well, export doesn't take care of inventory...
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this_branch = Branch.open_containing(to_dir)[0]
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transform_tree(this_branch.working_tree(), this_branch.basis_tree())
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def transform_tree(from_tree, to_tree, interesting_ids=None):
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merge_inner(from_tree.branch, to_tree, from_tree, ignore_zero=True,
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interesting_ids=interesting_ids)
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def merge(other_revision, base_revision,
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check_clean=True, ignore_zero=False,
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this_dir=None, backup_files=False, merge_type=ApplyMerge3,
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file_list=None, show_base=False, reprocess=False):
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"""Merge changes into a tree.
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list(path, revno) Base for three-way merge.
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If [None, None] then a base will be automatically determined.
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list(path, revno) Other revision for three-way merge.
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Directory to merge changes into; '.' by default.
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If true, this_dir must have no uncommitted changes before the
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ignore_zero - If true, suppress the "zero conflicts" message when
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there are no conflicts; should be set when doing something we expect
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to complete perfectly.
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file_list - If supplied, merge only changes to selected files.
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All available ancestors of other_revision and base_revision are
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automatically pulled into the branch.
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The revno may be -1 to indicate the last revision on the branch, which is
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This function is intended for use from the command line; programmatic
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clients might prefer to call merge_inner(), which has less magic behavior.
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this_branch = Branch.open_containing(this_dir)[0]
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if show_base and not merge_type is ApplyMerge3:
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raise BzrCommandError("Show-base is not supported for this merge"
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" type. %s" % merge_type)
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if reprocess and not merge_type is ApplyMerge3:
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raise BzrCommandError("Reprocess is not supported for this merge"
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" type. %s" % merge_type)
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if reprocess and show_base:
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raise BzrCommandError("Cannot reprocess and show base.")
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merger = Merger(this_branch)
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merger.check_basis(check_clean)
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merger.set_other(other_revision)
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merger.set_base(base_revision)
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if merger.base_rev_id == merger.other_rev_id:
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note('Nothing to do.')
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merger.backup_files = backup_files
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merger.merge_type = merge_type
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merger.set_interesting_files(file_list)
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merger.show_base = show_base
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merger.reprocess = reprocess
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merger.conflict_handler = MergeConflictHandler(merger.this_tree,
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ignore_zero=ignore_zero)
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conflicts = merger.do_merge()
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def merge_inner(this_branch, other_tree, base_tree, ignore_zero=False,
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merge_type=ApplyMerge3,
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interesting_ids=None,
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interesting_files=None):
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"""Primary interface for merging.
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typical use is probably
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'merge_inner(branch, branch.get_revision_tree(other_revision),
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branch.get_revision_tree(base_revision))'
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merger = Merger(this_branch, other_tree, base_tree)
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merger.backup_files = backup_files
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merger.merge_type = merge_type
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merger.interesting_ids = interesting_ids
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if interesting_files:
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assert not interesting_ids, ('Only supply interesting_ids'
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' or interesting_files')
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merger._set_interesting_files(interesting_files)
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merger.show_base = show_base
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merger.reprocess = reprocess
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merger.conflict_handler = MergeConflictHandler(merger.this_tree, base_tree,
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ignore_zero=ignore_zero)
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merger.other_rev_id = other_rev_id
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merger.other_basis = other_rev_id
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return merger.do_merge()
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interesting_ids=interesting_ids, this_tree=from_tree)
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class Merger(object):
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def __init__(self, this_branch, other_tree=None, base_tree=None):
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def __init__(self, this_branch, other_tree=None, base_tree=None,
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this_tree=None, pb=DummyProgress(), change_reporter=None,
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object.__init__(self)
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assert this_tree is not None, "this_tree is required"
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self.this_branch = this_branch
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self.this_basis = this_branch.last_revision()
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self.this_basis = _mod_revision.ensure_null(
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this_branch.last_revision())
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self.this_rev_id = None
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self.this_tree = this_branch.working_tree()
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self.this_tree = this_tree
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self.this_revision_tree = None
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self.this_basis_tree = None
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self.other_tree = other_tree
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self.other_branch = None
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self.base_tree = base_tree
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self.ignore_zero = False
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self.backup_files = False
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self.interesting_ids = None
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self.interesting_files = None
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self.show_base = False
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self.reprocess = False
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self.conflict_handler = MergeConflictHandler(self.this_tree, base_tree,
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def revision_tree(self, revision_id):
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return self.this_branch.revision_tree(revision_id)
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self.recurse = recurse
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self.change_reporter = change_reporter
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self._cached_trees = {}
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def from_uncommitted(tree, other_tree, pb):
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"""Return a Merger for uncommitted changes in other_tree.
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:param tree: The tree to merge into
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:param other_tree: The tree to get uncommitted changes from
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:param pb: A progress indicator
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merger = Merger(tree.branch, other_tree, other_tree.basis_tree(), tree,
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merger.base_rev_id = merger.base_tree.get_revision_id()
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merger.other_rev_id = None
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def from_mergeable(klass, tree, mergeable, pb):
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"""Return a Merger for a bundle or merge directive.
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:param tree: The tree to merge changes into
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:param mergeable: A merge directive or bundle
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:param pb: A progress indicator
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mergeable.install_revisions(tree.branch.repository)
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base_revision_id, other_revision_id, verified =\
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mergeable.get_merge_request(tree.branch.repository)
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if (base_revision_id != _mod_revision.NULL_REVISION and
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tree.branch.repository.get_graph().is_ancestor(
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base_revision_id, tree.branch.last_revision())):
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base_revision_id = None
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merger = klass.from_revision_ids(pb, tree, other_revision_id,
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return merger, verified
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def from_revision_ids(pb, this, other, base=None, other_branch=None,
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"""Return a Merger for revision-ids.
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:param tree: The tree to merge changes into
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:param other: The revision-id to use as OTHER
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:param base: The revision-id to use as BASE. If not specified, will
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:param other_branch: A branch containing the other revision-id. If
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not supplied, this.branch is used.
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:param base_branch: A branch containing the base revision-id. If
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not supplied, other_branch or this.branch will be used.
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:param pb: A progress indicator
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merger = Merger(this.branch, this_tree=this, pb=pb)
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if other_branch is None:
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other_branch = this.branch
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merger.set_other_revision(other, other_branch)
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if base_branch is None:
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base_branch = other_branch
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merger.set_base_revision(base, base_branch)
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def revision_tree(self, revision_id, branch=None):
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if revision_id not in self._cached_trees:
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branch = self.this_branch
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tree = self.this_tree.revision_tree(revision_id)
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except errors.NoSuchRevisionInTree:
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tree = branch.repository.revision_tree(revision_id)
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self._cached_trees[revision_id] = tree
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return self._cached_trees[revision_id]
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def _get_tree(self, treespec, possible_transports=None):
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from bzrlib import workingtree
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location, revno = treespec
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tree = workingtree.WorkingTree.open_containing(location)[0]
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return tree.branch, tree
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branch = Branch.open_containing(location, possible_transports)[0]
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revision_id = branch.last_revision()
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revision_id = branch.get_rev_id(revno)
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revision_id = ensure_null(revision_id)
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return branch, self.revision_tree(revision_id, branch)
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def ensure_revision_trees(self):
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if self.this_revision_tree is None:
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self.this_basis_tree = self.this_branch.revision_tree(
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self.this_basis_tree = self.revision_tree(self.this_basis)
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if self.this_basis == self.this_rev_id:
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self.this_revision_tree = self.this_basis_tree
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if self.other_rev_id is None:
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other_basis_tree = self.revision_tree(self.other_basis)
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changes = compare_trees(self.other_tree, other_basis_tree)
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changes = other_basis_tree.changes_from(self.other_tree)
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if changes.has_changed():
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raise WorkingTreeNotRevision(self.this_tree)
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other_rev_id = other_basis
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other_rev_id = self.other_basis
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self.other_tree = other_basis_tree
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def file_revisions(self, file_id):
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self.ensure_revision_trees()
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def get_id(tree, file_id):
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trees = (self.this_basis_tree, self.other_tree)
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return [get_id(tree, file_id) for tree in trees]
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def merge_factory(self, file_id, base, other):
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if self.merge_type.history_based:
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if self.show_base is True:
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raise BzrError("Cannot show base for hisory-based merges")
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if self.reprocess is True:
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raise BzrError("Cannot reprocess history-based merges")
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t_revid, o_revid = self.file_revisions(file_id)
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weave = self.this_basis_tree.get_weave(file_id)
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contents_change = self.merge_type(weave, t_revid, o_revid)
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if self.show_base is True or self.reprocess is True:
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contents_change = self.merge_type(file_id, base, other,
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show_base=self.show_base,
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reprocess=self.reprocess)
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contents_change = self.merge_type(file_id, base, other)
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if self.backup_files:
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contents_change = BackupBeforeChange(contents_change)
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return contents_change
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def check_basis(self, check_clean):
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if self.this_basis is None:
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raise BzrCommandError("This branch has no commits")
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def check_basis(self, check_clean, require_commits=True):
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if self.this_basis is None and require_commits is True:
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raise BzrCommandError("This branch has no commits."
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" (perhaps you would prefer 'bzr pull')")
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self.compare_basis()
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if self.this_basis != self.this_rev_id:
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raise BzrCommandError("Working tree has uncommitted changes.")
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raise errors.UncommittedChanges(self.this_tree)
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def compare_basis(self):
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changes = compare_trees(self.this_branch.working_tree(),
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self.this_branch.basis_tree(), False)
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basis_tree = self.revision_tree(self.this_tree.last_revision())
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except errors.RevisionNotPresent:
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basis_tree = self.this_tree.basis_tree()
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changes = self.this_tree.changes_from(basis_tree)
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if not changes.has_changed():
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self.this_rev_id = self.this_basis
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def set_interesting_files(self, file_list):
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self._set_interesting_files(file_list)
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except NotVersionedError, e:
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raise BzrCommandError("%s is not a source file in any"
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def _set_interesting_files(self, file_list):
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"""Set the list of interesting ids from a list of files."""
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if file_list is None:
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self.interesting_ids = None
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interesting_ids = set()
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for fname in file_list:
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path = self.this_tree.relpath(fname)
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for tree in (self.this_tree, self.base_tree, self.other_tree):
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file_id = tree.inventory.path2id(path)
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if file_id is not None:
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interesting_ids.add(file_id)
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raise NotVersionedError(path=fname)
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self.interesting_ids = interesting_ids
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self.interesting_files = file_list
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def set_pending(self):
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if not self.base_is_ancestor:
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if self.other_rev_id is None:
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if self.other_rev_id in self.this_branch.get_ancestry(self.this_basis):
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self.this_branch.working_tree().add_pending_merge(self.other_rev_id)
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def set_other(self, other_revision):
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other_branch, self.other_tree = get_tree(other_revision,
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if not self.base_is_ancestor or not self.base_is_other_ancestor or self.other_rev_id is None:
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def _add_parent(self):
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new_parents = self.this_tree.get_parent_ids() + [self.other_rev_id]
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new_parent_trees = []
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for revision_id in new_parents:
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tree = self.revision_tree(revision_id)
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except errors.RevisionNotPresent:
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new_parent_trees.append((revision_id, tree))
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self.this_tree.set_parent_trees(new_parent_trees,
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allow_leftmost_as_ghost=True)
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for _revision_id, tree in new_parent_trees:
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def set_other(self, other_revision, possible_transports=None):
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"""Set the revision and tree to merge from.
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This sets the other_tree, other_rev_id, other_basis attributes.
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:param other_revision: The [path, revision] list to merge from.
257
self.other_branch, self.other_tree = self._get_tree(other_revision,
499
259
if other_revision[1] == -1:
500
self.other_rev_id = other_branch.last_revision()
501
if self.other_rev_id is None:
502
raise NoCommits(other_branch)
260
self.other_rev_id = _mod_revision.ensure_null(
261
self.other_branch.last_revision())
262
if _mod_revision.is_null(self.other_rev_id):
263
raise NoCommits(self.other_branch)
503
264
self.other_basis = self.other_rev_id
504
265
elif other_revision[1] is not None:
505
self.other_rev_id = other_branch.get_rev_id(other_revision[1])
266
self.other_rev_id = self.other_branch.get_rev_id(other_revision[1])
506
267
self.other_basis = self.other_rev_id
508
269
self.other_rev_id = None
509
self.other_basis = other_branch.last_revision()
270
self.other_basis = self.other_branch.last_revision()
510
271
if self.other_basis is None:
511
raise NoCommits(other_branch)
512
fetch(from_branch=other_branch, to_branch=self.this_branch,
513
last_revision=self.other_basis)
272
raise NoCommits(self.other_branch)
273
if self.other_rev_id is not None:
274
self._cached_trees[self.other_rev_id] = self.other_tree
275
self._maybe_fetch(self.other_branch,self.this_branch, self.other_basis)
277
def set_other_revision(self, revision_id, other_branch):
278
"""Set 'other' based on a branch and revision id
280
:param revision_id: The revision to use for a tree
281
:param other_branch: The branch containing this tree
283
self.other_rev_id = revision_id
284
self.other_branch = other_branch
285
self._maybe_fetch(other_branch, self.this_branch, self.other_rev_id)
286
self.other_tree = self.revision_tree(revision_id)
287
self.other_basis = revision_id
289
def set_base_revision(self, revision_id, branch):
290
"""Set 'base' based on a branch and revision id
292
:param revision_id: The revision to use for a tree
293
:param branch: The branch containing this tree
295
self.base_rev_id = revision_id
296
self.base_branch = branch
297
self._maybe_fetch(branch, self.this_branch, revision_id)
298
self.base_tree = self.revision_tree(revision_id)
299
self.base_is_ancestor = is_ancestor(self.this_basis,
302
self.base_is_other_ancestor = is_ancestor(self.other_basis,
306
def _maybe_fetch(self, source, target, revision_id):
307
if not source.repository.has_same_location(target.repository):
308
target.fetch(source, revision_id)
311
this_repo = self.this_branch.repository
312
graph = this_repo.get_graph()
313
revisions = [ensure_null(self.this_basis),
314
ensure_null(self.other_basis)]
315
if NULL_REVISION in revisions:
316
self.base_rev_id = NULL_REVISION
318
self.base_rev_id = graph.find_unique_lca(*revisions)
319
if self.base_rev_id == NULL_REVISION:
320
raise UnrelatedBranches()
321
self.base_tree = self.revision_tree(self.base_rev_id)
322
self.base_is_ancestor = True
323
self.base_is_other_ancestor = True
515
325
def set_base(self, base_revision):
326
"""Set the base revision to use for the merge.
328
:param base_revision: A 2-list containing a path and revision number.
516
330
mutter("doing merge() with no base_revision specified")
517
331
if base_revision == [None, None]:
519
self.base_rev_id = common_ancestor(self.this_basis,
522
except NoCommonAncestor:
523
raise UnrelatedBranches()
524
self.base_tree = get_revid_tree(self.this_branch, self.base_rev_id,
526
self.base_is_ancestor = True
528
base_branch, self.base_tree = get_tree(base_revision)
334
base_branch, self.base_tree = self._get_tree(base_revision)
529
335
if base_revision[1] == -1:
530
336
self.base_rev_id = base_branch.last_revision()
531
337
elif base_revision[1] is None:
532
self.base_rev_id = None
338
self.base_rev_id = _mod_revision.NULL_REVISION
534
self.base_rev_id = base_branch.get_rev_id(base_revision[1])
535
fetch(from_branch=base_branch, to_branch=self.this_branch)
340
self.base_rev_id = _mod_revision.ensure_null(
341
base_branch.get_rev_id(base_revision[1]))
342
self._maybe_fetch(base_branch, self.this_branch, self.base_rev_id)
536
343
self.base_is_ancestor = is_ancestor(self.this_basis,
537
344
self.base_rev_id,
538
345
self.this_branch)
346
self.base_is_other_ancestor = is_ancestor(self.other_basis,
540
350
def do_merge(self):
541
def get_inventory(tree):
542
return tree.inventory
544
inv_changes = merge_flex(self.this_tree, self.base_tree,
546
generate_changeset, get_inventory,
547
self.conflict_handler,
548
merge_factory=self.merge_factory,
549
interesting_ids=self.interesting_ids)
552
for id, path in inv_changes.iteritems():
351
kwargs = {'working_tree':self.this_tree, 'this_tree': self.this_tree,
352
'other_tree': self.other_tree,
353
'interesting_ids': self.interesting_ids,
354
'interesting_files': self.interesting_files,
356
if self.merge_type.requires_base:
357
kwargs['base_tree'] = self.base_tree
358
if self.merge_type.supports_reprocess:
359
kwargs['reprocess'] = self.reprocess
361
raise BzrError("Conflict reduction is not supported for merge"
362
" type %s." % self.merge_type)
363
if self.merge_type.supports_show_base:
364
kwargs['show_base'] = self.show_base
366
raise BzrError("Showing base is not supported for this"
367
" merge type. %s" % self.merge_type)
368
self.this_tree.lock_tree_write()
369
if self.base_tree is not None:
370
self.base_tree.lock_read()
371
if self.other_tree is not None:
372
self.other_tree.lock_read()
374
merge = self.merge_type(pb=self._pb,
375
change_reporter=self.change_reporter,
377
if self.recurse == 'down':
378
for path, file_id in self.this_tree.iter_references():
379
sub_tree = self.this_tree.get_nested_tree(file_id, path)
380
other_revision = self.other_tree.get_reference_revision(
382
if other_revision == sub_tree.last_revision():
384
sub_merge = Merger(sub_tree.branch, this_tree=sub_tree)
385
sub_merge.merge_type = self.merge_type
386
relpath = self.this_tree.relpath(path)
387
other_branch = self.other_branch.reference_parent(file_id, relpath)
388
sub_merge.set_other_revision(other_revision, other_branch)
389
base_revision = self.base_tree.get_reference_revision(file_id)
390
sub_merge.base_tree = \
391
sub_tree.branch.repository.revision_tree(base_revision)
395
if self.other_tree is not None:
396
self.other_tree.unlock()
397
if self.base_tree is not None:
398
self.base_tree.unlock()
399
self.this_tree.unlock()
400
if len(merge.cooked_conflicts) == 0:
401
if not self.ignore_zero:
402
note("All changes applied successfully.")
404
note("%d conflicts encountered." % len(merge.cooked_conflicts))
406
return len(merge.cooked_conflicts)
409
class Merge3Merger(object):
410
"""Three-way merger that uses the merge3 text merger"""
412
supports_reprocess = True
413
supports_show_base = True
414
history_based = False
415
winner_idx = {"this": 2, "other": 1, "conflict": 1}
417
def __init__(self, working_tree, this_tree, base_tree, other_tree,
418
interesting_ids=None, reprocess=False, show_base=False,
419
pb=DummyProgress(), pp=None, change_reporter=None,
420
interesting_files=None):
421
"""Initialize the merger object and perform the merge.
423
:param working_tree: The working tree to apply the merge to
424
:param this_tree: The local tree in the merge operation
425
:param base_tree: The common tree in the merge operation
426
:param other_tree: The other other tree to merge changes from
427
:param interesting_ids: The file_ids of files that should be
428
participate in the merge. May not be combined with
430
:param: reprocess If True, perform conflict-reduction processing.
431
:param show_base: If True, show the base revision in text conflicts.
432
(incompatible with reprocess)
433
:param pb: A Progress bar
434
:param pp: A ProgressPhase object
435
:param change_reporter: An object that should report changes made
436
:param interesting_files: The tree-relative paths of files that should
437
participate in the merge. If these paths refer to directories,
438
the contents of those directories will also be included. May not
439
be combined with interesting_ids. If neither interesting_files nor
440
interesting_ids is specified, all files may participate in the
443
object.__init__(self)
444
if interesting_files is not None:
445
assert interesting_ids is None
446
self.interesting_ids = interesting_ids
447
self.interesting_files = interesting_files
448
self.this_tree = working_tree
449
self.this_tree.lock_tree_write()
450
self.base_tree = base_tree
451
self.base_tree.lock_read()
452
self.other_tree = other_tree
453
self.other_tree.lock_read()
454
self._raw_conflicts = []
455
self.cooked_conflicts = []
456
self.reprocess = reprocess
457
self.show_base = show_base
460
self.change_reporter = change_reporter
462
self.pp = ProgressPhase("Merge phase", 3, self.pb)
464
self.tt = TreeTransform(working_tree, self.pb)
467
entries = self._entries3()
468
child_pb = ui.ui_factory.nested_progress_bar()
470
for num, (file_id, changed, parents3, names3,
471
executable3) in enumerate(entries):
472
child_pb.update('Preparing file merge', num, len(entries))
473
self._merge_names(file_id, parents3, names3)
475
file_status = self.merge_contents(file_id)
477
file_status = 'unmodified'
478
self._merge_executable(file_id,
479
executable3, file_status)
484
child_pb = ui.ui_factory.nested_progress_bar()
486
fs_conflicts = resolve_conflicts(self.tt, child_pb,
487
lambda t, c: conflict_pass(t, c, self.other_tree))
490
if change_reporter is not None:
491
from bzrlib import delta
492
delta.report_changes(self.tt._iter_changes(), change_reporter)
493
self.cook_conflicts(fs_conflicts)
494
for conflict in self.cooked_conflicts:
497
results = self.tt.apply(no_conflicts=True)
498
self.write_modified(results)
500
working_tree.add_conflicts(self.cooked_conflicts)
501
except UnsupportedOperation:
505
self.other_tree.unlock()
506
self.base_tree.unlock()
507
self.this_tree.unlock()
511
"""Gather data about files modified between three trees.
513
Return a list of tuples of file_id, changed, parents3, names3,
514
executable3. changed is a boolean indicating whether the file contents
515
or kind were changed. parents3 is a tuple of parent ids for base,
516
other and this. names3 is a tuple of names for base, other and this.
517
executable3 is a tuple of execute-bit values for base, other and this.
520
iterator = self.other_tree._iter_changes(self.base_tree,
521
include_unchanged=True, specific_files=self.interesting_files,
522
extra_trees=[self.this_tree])
523
for (file_id, paths, changed, versioned, parents, names, kind,
524
executable) in iterator:
525
if (self.interesting_ids is not None and
526
file_id not in self.interesting_ids):
528
if file_id in self.this_tree.inventory:
529
entry = self.this_tree.inventory[file_id]
530
this_name = entry.name
531
this_parent = entry.parent_id
532
this_executable = entry.executable
536
this_executable = None
537
parents3 = parents + (this_parent,)
538
names3 = names + (this_name,)
539
executable3 = executable + (this_executable,)
540
result.append((file_id, changed, parents3, names3, executable3))
545
self.tt.final_kind(self.tt.root)
547
self.tt.cancel_deletion(self.tt.root)
548
if self.tt.final_file_id(self.tt.root) is None:
549
self.tt.version_file(self.tt.tree_file_id(self.tt.root),
551
if self.other_tree.inventory.root is None:
553
other_root_file_id = self.other_tree.get_root_id()
554
other_root = self.tt.trans_id_file_id(other_root_file_id)
555
if other_root == self.tt.root:
558
self.tt.final_kind(other_root)
561
self.reparent_children(self.other_tree.inventory.root, self.tt.root)
562
self.tt.cancel_creation(other_root)
563
self.tt.cancel_versioning(other_root)
565
def reparent_children(self, ie, target):
566
for thing, child in ie.children.iteritems():
567
trans_id = self.tt.trans_id_file_id(child.file_id)
568
self.tt.adjust_path(self.tt.final_name(trans_id), target, trans_id)
570
def write_modified(self, results):
572
for path in results.modified_paths:
573
file_id = self.this_tree.path2id(self.this_tree.relpath(path))
576
hash = self.this_tree.get_file_sha1(file_id)
579
modified_hashes[file_id] = hash
580
self.this_tree.set_merge_modified(modified_hashes)
583
def parent(entry, file_id):
584
"""Determine the parent for a file_id (used as a key method)"""
587
return entry.parent_id
590
def name(entry, file_id):
591
"""Determine the name for a file_id (used as a key method)"""
597
def contents_sha1(tree, file_id):
598
"""Determine the sha1 of the file contents (used as a key method)."""
599
if file_id not in tree:
601
return tree.get_file_sha1(file_id)
604
def executable(tree, file_id):
605
"""Determine the executability of a file-id (used as a key method)."""
606
if file_id not in tree:
608
if tree.kind(file_id) != "file":
610
return tree.is_executable(file_id)
613
def kind(tree, file_id):
614
"""Determine the kind of a file-id (used as a key method)."""
615
if file_id not in tree:
617
return tree.kind(file_id)
620
def _three_way(base, other, this):
621
#if base == other, either they all agree, or only THIS has changed.
624
elif this not in (base, other):
626
# "Ambiguous clean merge" -- both sides have made the same change.
629
# this == base: only other has changed.
634
def scalar_three_way(this_tree, base_tree, other_tree, file_id, key):
635
"""Do a three-way test on a scalar.
636
Return "this", "other" or "conflict", depending whether a value wins.
638
key_base = key(base_tree, file_id)
639
key_other = key(other_tree, file_id)
640
#if base == other, either they all agree, or only THIS has changed.
641
if key_base == key_other:
643
key_this = key(this_tree, file_id)
644
if key_this not in (key_base, key_other):
646
# "Ambiguous clean merge"
647
elif key_this == key_other:
650
assert key_this == key_base
653
def merge_names(self, file_id):
655
if file_id in tree.inventory:
656
return tree.inventory[file_id]
659
this_entry = get_entry(self.this_tree)
660
other_entry = get_entry(self.other_tree)
661
base_entry = get_entry(self.base_tree)
662
entries = (base_entry, other_entry, this_entry)
665
for entry in entries:
670
names.append(entry.name)
671
parents.append(entry.parent_id)
672
return self._merge_names(file_id, parents, names)
674
def _merge_names(self, file_id, parents, names):
675
"""Perform a merge on file_id names and parents"""
676
base_name, other_name, this_name = names
677
base_parent, other_parent, this_parent = parents
679
name_winner = self._three_way(*names)
681
parent_id_winner = self._three_way(*parents)
682
if this_name is None:
683
if name_winner == "this":
684
name_winner = "other"
685
if parent_id_winner == "this":
686
parent_id_winner = "other"
687
if name_winner == "this" and parent_id_winner == "this":
689
if name_winner == "conflict":
690
trans_id = self.tt.trans_id_file_id(file_id)
691
self._raw_conflicts.append(('name conflict', trans_id,
692
this_name, other_name))
693
if parent_id_winner == "conflict":
694
trans_id = self.tt.trans_id_file_id(file_id)
695
self._raw_conflicts.append(('parent conflict', trans_id,
696
this_parent, other_parent))
697
if other_name is None:
698
# it doesn't matter whether the result was 'other' or
699
# 'conflict'-- if there's no 'other', we leave it alone.
701
# if we get here, name_winner and parent_winner are set to safe values.
702
trans_id = self.tt.trans_id_file_id(file_id)
703
parent_id = parents[self.winner_idx[parent_id_winner]]
704
if parent_id is not None:
705
parent_trans_id = self.tt.trans_id_file_id(parent_id)
706
self.tt.adjust_path(names[self.winner_idx[name_winner]],
707
parent_trans_id, trans_id)
709
def merge_contents(self, file_id):
710
"""Performa a merge on file_id contents."""
711
def contents_pair(tree):
712
if file_id not in tree:
714
kind = tree.kind(file_id)
716
contents = tree.get_file_sha1(file_id)
717
elif kind == "symlink":
718
contents = tree.get_symlink_target(file_id)
721
return kind, contents
723
def contents_conflict():
724
trans_id = self.tt.trans_id_file_id(file_id)
725
name = self.tt.final_name(trans_id)
726
parent_id = self.tt.final_parent(trans_id)
727
if file_id in self.this_tree.inventory:
728
self.tt.unversion_file(trans_id)
729
if file_id in self.this_tree:
730
self.tt.delete_contents(trans_id)
731
file_group = self._dump_conflicts(name, parent_id, file_id,
733
self._raw_conflicts.append(('contents conflict', file_group))
735
# See SPOT run. run, SPOT, run.
736
# So we're not QUITE repeating ourselves; we do tricky things with
738
base_pair = contents_pair(self.base_tree)
739
other_pair = contents_pair(self.other_tree)
740
if base_pair == other_pair:
741
# OTHER introduced no changes
743
this_pair = contents_pair(self.this_tree)
744
if this_pair == other_pair:
745
# THIS and OTHER introduced the same changes
748
trans_id = self.tt.trans_id_file_id(file_id)
749
if this_pair == base_pair:
750
# only OTHER introduced changes
751
if file_id in self.this_tree:
752
# Remove any existing contents
753
self.tt.delete_contents(trans_id)
754
if file_id in self.other_tree:
755
# OTHER changed the file
756
create_by_entry(self.tt,
757
self.other_tree.inventory[file_id],
758
self.other_tree, trans_id)
759
if file_id not in self.this_tree.inventory:
760
self.tt.version_file(file_id, trans_id)
762
elif file_id in self.this_tree.inventory:
763
# OTHER deleted the file
764
self.tt.unversion_file(trans_id)
766
#BOTH THIS and OTHER introduced changes; scalar conflict
767
elif this_pair[0] == "file" and other_pair[0] == "file":
768
# THIS and OTHER are both files, so text merge. Either
769
# BASE is a file, or both converted to files, so at least we
770
# have agreement that output should be a file.
772
self.text_merge(file_id, trans_id)
774
return contents_conflict()
775
if file_id not in self.this_tree.inventory:
776
self.tt.version_file(file_id, trans_id)
778
self.tt.tree_kind(trans_id)
779
self.tt.delete_contents(trans_id)
784
# Scalar conflict, can't text merge. Dump conflicts
785
return contents_conflict()
787
def get_lines(self, tree, file_id):
788
"""Return the lines in a file, or an empty list."""
790
return tree.get_file(file_id).readlines()
794
def text_merge(self, file_id, trans_id):
795
"""Perform a three-way text merge on a file_id"""
796
# it's possible that we got here with base as a different type.
797
# if so, we just want two-way text conflicts.
798
if file_id in self.base_tree and \
799
self.base_tree.kind(file_id) == "file":
800
base_lines = self.get_lines(self.base_tree, file_id)
803
other_lines = self.get_lines(self.other_tree, file_id)
804
this_lines = self.get_lines(self.this_tree, file_id)
805
m3 = Merge3(base_lines, this_lines, other_lines)
806
start_marker = "!START OF MERGE CONFLICT!" + "I HOPE THIS IS UNIQUE"
807
if self.show_base is True:
808
base_marker = '|' * 7
812
def iter_merge3(retval):
813
retval["text_conflicts"] = False
814
for line in m3.merge_lines(name_a = "TREE",
815
name_b = "MERGE-SOURCE",
816
name_base = "BASE-REVISION",
817
start_marker=start_marker,
818
base_marker=base_marker,
819
reprocess=self.reprocess):
820
if line.startswith(start_marker):
821
retval["text_conflicts"] = True
822
yield line.replace(start_marker, '<' * 7)
557
assert path.startswith('.' + '/') or path.startswith('.' + '\\'), "path is %s" % path
559
adjust_ids.append((path, id))
560
if len(adjust_ids) > 0:
561
self.this_branch.working_tree().set_inventory(self.regen_inventory(adjust_ids))
562
conflicts = self.conflict_handler.conflicts
563
self.conflict_handler.finalize()
566
def regen_inventory(self, new_entries):
567
old_entries = self.this_branch.working_tree().read_working_inventory()
571
for path, file_id in new_entries:
574
new_entries_map[file_id] = path
576
def id2path(file_id):
577
path = new_entries_map.get(file_id)
580
entry = old_entries[file_id]
581
if entry.parent_id is None:
583
return pathjoin(id2path(entry.parent_id), entry.name)
585
for file_id in old_entries:
586
entry = old_entries[file_id]
587
path = id2path(file_id)
588
new_inventory[file_id] = (path, file_id, entry.parent_id,
590
by_path[path] = file_id
595
for path, file_id in new_entries:
597
del new_inventory[file_id]
600
new_path_list.append((path, file_id))
601
if file_id not in old_entries:
603
# Ensure no file is added before its parent
605
for path, file_id in new_path_list:
609
parent = by_path[os.path.dirname(path)]
610
abspath = pathjoin(self.this_tree.basedir, path)
611
kind = bzrlib.osutils.file_kind(abspath)
612
new_inventory[file_id] = (path, file_id, parent, kind)
613
by_path[path] = file_id
615
# Get a list in insertion order
616
new_inventory_list = new_inventory.values()
617
mutter ("""Inventory regeneration:
618
old length: %i insertions: %i deletions: %i new_length: %i"""\
619
% (len(old_entries), insertions, deletions,
620
len(new_inventory_list)))
621
assert len(new_inventory_list) == len(old_entries) + insertions\
623
new_inventory_list.sort()
624
return new_inventory_list
626
merge_types = { "merge3": (ApplyMerge3, "Native diff3-style merge"),
627
"diff3": (Diff3Merge, "Merge using external diff3"),
628
'weave': (WeaveMerge, "Weave-based merge")
826
merge3_iterator = iter_merge3(retval)
827
self.tt.create_file(merge3_iterator, trans_id)
828
if retval["text_conflicts"] is True:
829
self._raw_conflicts.append(('text conflict', trans_id))
830
name = self.tt.final_name(trans_id)
831
parent_id = self.tt.final_parent(trans_id)
832
file_group = self._dump_conflicts(name, parent_id, file_id,
833
this_lines, base_lines,
835
file_group.append(trans_id)
837
def _dump_conflicts(self, name, parent_id, file_id, this_lines=None,
838
base_lines=None, other_lines=None, set_version=False,
840
"""Emit conflict files.
841
If this_lines, base_lines, or other_lines are omitted, they will be
842
determined automatically. If set_version is true, the .OTHER, .THIS
843
or .BASE (in that order) will be created as versioned files.
845
data = [('OTHER', self.other_tree, other_lines),
846
('THIS', self.this_tree, this_lines)]
848
data.append(('BASE', self.base_tree, base_lines))
851
for suffix, tree, lines in data:
853
trans_id = self._conflict_file(name, parent_id, tree, file_id,
855
file_group.append(trans_id)
856
if set_version and not versioned:
857
self.tt.version_file(file_id, trans_id)
861
def _conflict_file(self, name, parent_id, tree, file_id, suffix,
863
"""Emit a single conflict file."""
864
name = name + '.' + suffix
865
trans_id = self.tt.create_path(name, parent_id)
866
entry = tree.inventory[file_id]
867
create_by_entry(self.tt, entry, tree, trans_id, lines)
870
def merge_executable(self, file_id, file_status):
871
"""Perform a merge on the execute bit."""
872
executable = [self.executable(t, file_id) for t in (self.base_tree,
873
self.other_tree, self.this_tree)]
874
self._merge_executable(file_id, executable, file_status)
876
def _merge_executable(self, file_id, executable, file_status):
877
"""Perform a merge on the execute bit."""
878
base_executable, other_executable, this_executable = executable
879
if file_status == "deleted":
881
trans_id = self.tt.trans_id_file_id(file_id)
883
if self.tt.final_kind(trans_id) != "file":
887
winner = self._three_way(*executable)
888
if winner == "conflict":
889
# There must be a None in here, if we have a conflict, but we
890
# need executability since file status was not deleted.
891
if self.executable(self.other_tree, file_id) is None:
896
if file_status == "modified":
897
executability = this_executable
898
if executability is not None:
899
trans_id = self.tt.trans_id_file_id(file_id)
900
self.tt.set_executability(executability, trans_id)
902
assert winner == "other"
903
if file_id in self.other_tree:
904
executability = other_executable
905
elif file_id in self.this_tree:
906
executability = this_executable
907
elif file_id in self.base_tree:
908
executability = base_executable
909
if executability is not None:
910
trans_id = self.tt.trans_id_file_id(file_id)
911
self.tt.set_executability(executability, trans_id)
913
def cook_conflicts(self, fs_conflicts):
914
"""Convert all conflicts into a form that doesn't depend on trans_id"""
915
from conflicts import Conflict
917
self.cooked_conflicts.extend(cook_conflicts(fs_conflicts, self.tt))
918
fp = FinalPaths(self.tt)
919
for conflict in self._raw_conflicts:
920
conflict_type = conflict[0]
921
if conflict_type in ('name conflict', 'parent conflict'):
922
trans_id = conflict[1]
923
conflict_args = conflict[2:]
924
if trans_id not in name_conflicts:
925
name_conflicts[trans_id] = {}
926
unique_add(name_conflicts[trans_id], conflict_type,
928
if conflict_type == 'contents conflict':
929
for trans_id in conflict[1]:
930
file_id = self.tt.final_file_id(trans_id)
931
if file_id is not None:
933
path = fp.get_path(trans_id)
934
for suffix in ('.BASE', '.THIS', '.OTHER'):
935
if path.endswith(suffix):
936
path = path[:-len(suffix)]
938
c = Conflict.factory(conflict_type, path=path, file_id=file_id)
939
self.cooked_conflicts.append(c)
940
if conflict_type == 'text conflict':
941
trans_id = conflict[1]
942
path = fp.get_path(trans_id)
943
file_id = self.tt.final_file_id(trans_id)
944
c = Conflict.factory(conflict_type, path=path, file_id=file_id)
945
self.cooked_conflicts.append(c)
947
for trans_id, conflicts in name_conflicts.iteritems():
949
this_parent, other_parent = conflicts['parent conflict']
950
assert this_parent != other_parent
952
this_parent = other_parent = \
953
self.tt.final_file_id(self.tt.final_parent(trans_id))
955
this_name, other_name = conflicts['name conflict']
956
assert this_name != other_name
958
this_name = other_name = self.tt.final_name(trans_id)
959
other_path = fp.get_path(trans_id)
960
if this_parent is not None and this_name is not None:
962
fp.get_path(self.tt.trans_id_file_id(this_parent))
963
this_path = pathjoin(this_parent_path, this_name)
965
this_path = "<deleted>"
966
file_id = self.tt.final_file_id(trans_id)
967
c = Conflict.factory('path conflict', path=this_path,
968
conflict_path=other_path, file_id=file_id)
969
self.cooked_conflicts.append(c)
970
self.cooked_conflicts.sort(key=Conflict.sort_key)
973
class WeaveMerger(Merge3Merger):
974
"""Three-way tree merger, text weave merger."""
975
supports_reprocess = True
976
supports_show_base = False
978
def __init__(self, working_tree, this_tree, base_tree, other_tree,
979
interesting_ids=None, pb=DummyProgress(), pp=None,
980
reprocess=False, change_reporter=None,
981
interesting_files=None):
982
super(WeaveMerger, self).__init__(working_tree, this_tree,
983
base_tree, other_tree,
984
interesting_ids=interesting_ids,
985
pb=pb, pp=pp, reprocess=reprocess,
986
change_reporter=change_reporter)
988
def _merged_lines(self, file_id):
989
"""Generate the merged lines.
990
There is no distinction between lines that are meant to contain <<<<<<<
993
plan = self.this_tree.plan_file_merge(file_id, self.other_tree)
994
textmerge = PlanWeaveMerge(plan, '<<<<<<< TREE\n',
995
'>>>>>>> MERGE-SOURCE\n')
996
return textmerge.merge_lines(self.reprocess)
998
def text_merge(self, file_id, trans_id):
999
"""Perform a (weave) text merge for a given file and file-id.
1000
If conflicts are encountered, .THIS and .OTHER files will be emitted,
1001
and a conflict will be noted.
1003
lines, conflicts = self._merged_lines(file_id)
1005
# Note we're checking whether the OUTPUT is binary in this case,
1006
# because we don't want to get into weave merge guts.
1007
check_text_lines(lines)
1008
self.tt.create_file(lines, trans_id)
1010
self._raw_conflicts.append(('text conflict', trans_id))
1011
name = self.tt.final_name(trans_id)
1012
parent_id = self.tt.final_parent(trans_id)
1013
file_group = self._dump_conflicts(name, parent_id, file_id,
1015
file_group.append(trans_id)
1018
class Diff3Merger(Merge3Merger):
1019
"""Three-way merger using external diff3 for text merging"""
1021
def dump_file(self, temp_dir, name, tree, file_id):
1022
out_path = pathjoin(temp_dir, name)
1023
out_file = open(out_path, "wb")
1025
in_file = tree.get_file(file_id)
1026
for line in in_file:
1027
out_file.write(line)
1032
def text_merge(self, file_id, trans_id):
1033
"""Perform a diff3 merge using a specified file-id and trans-id.
1034
If conflicts are encountered, .BASE, .THIS. and .OTHER conflict files
1035
will be dumped, and a will be conflict noted.
1038
temp_dir = osutils.mkdtemp(prefix="bzr-")
1040
new_file = pathjoin(temp_dir, "new")
1041
this = self.dump_file(temp_dir, "this", self.this_tree, file_id)
1042
base = self.dump_file(temp_dir, "base", self.base_tree, file_id)
1043
other = self.dump_file(temp_dir, "other", self.other_tree, file_id)
1044
status = bzrlib.patch.diff3(new_file, this, base, other)
1045
if status not in (0, 1):
1046
raise BzrError("Unhandled diff3 exit code")
1047
f = open(new_file, 'rb')
1049
self.tt.create_file(f, trans_id)
1053
name = self.tt.final_name(trans_id)
1054
parent_id = self.tt.final_parent(trans_id)
1055
self._dump_conflicts(name, parent_id, file_id)
1056
self._raw_conflicts.append(('text conflict', trans_id))
1058
osutils.rmtree(temp_dir)
1061
def merge_inner(this_branch, other_tree, base_tree, ignore_zero=False,
1063
merge_type=Merge3Merger,
1064
interesting_ids=None,
1068
interesting_files=None,
1071
change_reporter=None):
1072
"""Primary interface for merging.
1074
typical use is probably
1075
'merge_inner(branch, branch.get_revision_tree(other_revision),
1076
branch.get_revision_tree(base_revision))'
1078
if this_tree is None:
1079
raise BzrError("bzrlib.merge.merge_inner requires a this_tree "
1080
"parameter as of bzrlib version 0.8.")
1081
merger = Merger(this_branch, other_tree, base_tree, this_tree=this_tree,
1082
pb=pb, change_reporter=change_reporter)
1083
merger.backup_files = backup_files
1084
merger.merge_type = merge_type
1085
merger.interesting_ids = interesting_ids
1086
merger.ignore_zero = ignore_zero
1087
if interesting_files:
1088
assert not interesting_ids, ('Only supply interesting_ids'
1089
' or interesting_files')
1090
merger.interesting_files = interesting_files
1091
merger.show_base = show_base
1092
merger.reprocess = reprocess
1093
merger.other_rev_id = other_rev_id
1094
merger.other_basis = other_rev_id
1095
return merger.do_merge()
1097
def get_merge_type_registry():
1098
"""Merge type registry is in bzrlib.option to avoid circular imports.
1100
This method provides a sanctioned way to retrieve it.
1102
from bzrlib import option
1103
return option._merge_type_registry
1106
def _plan_annotate_merge(annotated_a, annotated_b, ancestors_a, ancestors_b):
1107
def status_a(revision, text):
1108
if revision in ancestors_b:
1109
return 'killed-b', text
1111
return 'new-a', text
1113
def status_b(revision, text):
1114
if revision in ancestors_a:
1115
return 'killed-a', text
1117
return 'new-b', text
1119
plain_a = [t for (a, t) in annotated_a]
1120
plain_b = [t for (a, t) in annotated_b]
1121
matcher = patiencediff.PatienceSequenceMatcher(None, plain_a, plain_b)
1122
blocks = matcher.get_matching_blocks()
1125
for ai, bi, l in blocks:
1126
# process all mismatched sections
1127
# (last mismatched section is handled because blocks always
1128
# includes a 0-length last block)
1129
for revision, text in annotated_a[a_cur:ai]:
1130
yield status_a(revision, text)
1131
for revision, text in annotated_b[b_cur:bi]:
1132
yield status_b(revision, text)
1134
# and now the matched section
1137
for text_a, text_b in zip(plain_a[ai:a_cur], plain_b[bi:b_cur]):
1138
assert text_a == text_b
1139
yield "unchanged", text_a
added
removed
bzrlib/merge.py
