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# Copyright (C) 2005, 2006 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Display what revisions are missing in 'other' from 'this' and vice versa."""
from bzrlib.log import (
LogRevision,
)
def iter_log_revisions(revisions, revision_source, verbose):
last_tree = revision_source.revision_tree(None)
last_rev_id = None
for revno, rev_id in revisions:
rev = revision_source.get_revision(rev_id)
if verbose:
remote_tree = revision_source.revision_tree(rev_id)
parent_rev_id = rev.parent_ids[0]
if last_rev_id == parent_rev_id:
parent_tree = last_tree
else:
parent_tree = revision_source.revision_tree(parent_rev_id)
revision_tree = revision_source.revision_tree(rev_id)
last_rev_id = rev_id
last_tree = revision_tree
delta = revision_tree.changes_from(parent_tree)
else:
delta = None
yield LogRevision(rev, revno, delta=delta)
def find_unmerged(local_branch, remote_branch, restrict='all'):
"""Find revisions from each side that have not been merged.
:param local_branch: Compare the history of local_branch
:param remote_branch: versus the history of remote_branch, and determine
mainline revisions which have not been merged.
:param restrict: ('all', 'local', 'remote') If 'all', we will return the
unique revisions from both sides. If 'local', we will return None
for the remote revisions, similarly if 'remote' we will return None for
the local revisions.
:return: A list of [(revno, revision_id)] for the mainline revisions on
each side.
"""
local_branch.lock_read()
try:
remote_branch.lock_read()
try:
return _find_unmerged(local_branch,
remote_branch, restrict=restrict)
finally:
remote_branch.unlock()
finally:
local_branch.unlock()
def _enumerate_mainline(ancestry, graph, tip_revno, tip):
"""Enumerate the mainline revisions for these revisions.
:param ancestry: A set of revisions that we care about
:param graph: A Graph which lets us find the parents for a revision
:param tip_revno: The revision number for the tip revision
:param tip: The tip of mainline
:return: [(revno, revision_id)] for all revisions in ancestry that
are left-hand parents from tip, or None if ancestry is None.
"""
if ancestry is None:
return None
if not ancestry: #Empty ancestry, no need to do any work
return []
# Optionally, we could make 1 call to graph.get_parent_map with all
# ancestors. However that will often check many more parents than we
# actually need, and the Graph is likely to already have the parents cached
# anyway.
mainline = []
cur = tip
cur_revno = tip_revno
while cur in ancestry:
parent_map = graph.get_parent_map([cur])
parents = parent_map.get(cur)
if not parents:
break # Ghost, we are done
mainline.append((cur_revno, cur))
cur = parents[0]
cur_revno -= 1
mainline.reverse()
return mainline
def _find_unmerged(local_branch, remote_branch, restrict):
"""See find_unmerged.
The branches should already be locked before entering.
"""
local_revno, local_revision_id = local_branch.last_revision_info()
remote_revno, remote_revision_id = remote_branch.last_revision_info()
if local_revno == remote_revno and local_revision_id == remote_revision_id:
# A simple shortcut when the tips are at the same point
return [], []
graph = local_branch.repository.get_graph(
remote_branch.repository)
if restrict == 'remote':
local_extra = None
remote_extra = graph.find_unique_ancestors(
remote_revision_id, [local_revision_id])
elif restrict == 'local':
remote_extra = None
local_extra = graph.find_unique_ancestors(
local_revision_id, [remote_revision_id])
else:
if restrict != 'all':
raise ValueError('param restrict not one of "all", "local",'
' "remote": %r' % (restrict,))
local_extra, remote_extra = graph.find_difference(
local_revision_id, remote_revision_id)
# Now that we have unique ancestors, compute just the mainline, and
# generate revnos for them.
local_mainline = _enumerate_mainline(local_extra, graph, local_revno,
local_revision_id)
remote_mainline = _enumerate_mainline(remote_extra, graph, remote_revno,
remote_revision_id)
return local_mainline, remote_mainline
def sorted_revisions(revisions, history_map):
revisions = [(history_map[r],r) for r in revisions]
revisions.sort()
return revisions
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