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# Copyright (C) 2005 by Aaron Bentley
# 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
from bzrlib.branch import Branch
from bzrlib.fetch import greedy_fetch
from bzrlib.errors import NoSuchRevision, InstallFailed
def fetch_missing(branch):
"""Install the revisions of missing ancestors from another branch."""
this_branch = Branch.open_containing('.')
if branch is None:
branch = this_branch.get_parent()
other_branch = Branch.open_containing(branch)
installed = []
failed = []
# Because iter_missing_ancestors tests for existence after our last fetch
# is complete, it won't falsely report an ancestor as missing.
# Yay iterators!
missing = iter_missing_ancestors(this_branch)
for revision in missing:
try:
greedy_fetch(this_branch, other_branch, revision)
installed.append(revision)
except InstallFailed:
failed.append(revision)
if len(installed) > 0:
print "Installed:"
for rev in installed:
print rev
if len(failed) > 0:
print "Still missing:"
for rev in failed:
print rev
def iter_missing_ancestors(branch):
"""Find all ancestors that aren't stored in this branch."""
seen = set()
lines = [branch.last_patch()]
while len(lines) > 0:
new_lines = []
for line in lines:
if line in seen:
continue
seen.add(line)
try:
revision = branch.get_revision(line)
new_lines.extend([r.revision_id for r in revision.parents])
except NoSuchRevision:
yield line
lines = new_lines
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