def remove_empty_branches(branch_tree):
tag_set = git.tags()
ensure_root_checkout = git.once(lambda: git.run('checkout', git.root()))
deletions = {}
reparents = {}
downstreams = collections.defaultdict(list)
for branch, parent in git.topo_iter(branch_tree, top_down=False):
if git.is_dormant(branch):
continue
downstreams[parent].append(branch)
# If branch and parent have the same tree, then branch has to be marked
# for deletion and its children and grand-children reparented to parent.
if git.hash_one(branch + ":") == git.hash_one(parent + ":"):
ensure_root_checkout()
logging.debug('branch %s merged to %s', branch, parent)
# Mark branch for deletion while remembering the ordering, then add all
# its children as grand-children of its parent and record reparenting
# information if necessary.
deletions[branch] = len(deletions)
for down in downstreams[branch]:
if down in deletions:
continue
# Record the new and old parent for down, or update such a record
# if it already exists. Keep track of the ordering so that reparenting
# happen in topological order.
downstreams[parent].append(down)
if down not in reparents:
reparents[down] = (len(reparents), parent, branch)
else:
order, _, old_parent = reparents[down]
reparents[down] = (order, parent, old_parent)
# Apply all reparenting recorded, in order.
for branch, value in sorted(reparents.items(), key=lambda x: x[1][0]):
_, parent, old_parent = value
if parent in tag_set:
git.set_branch_config(branch, 'remote', '.')
git.set_branch_config(branch, 'merge', 'refs/tags/%s' % parent)
print('Reparented %s to track %s [tag] (was tracking %s)' %
(branch, parent, old_parent))
else:
git.run('branch', '--set-upstream-to', parent, branch)
print('Reparented %s to track %s (was tracking %s)' %
(branch, parent, old_parent))
# Apply all deletions recorded, in order.
for branch, _ in sorted(deletions.items(), key=lambda x: x[1]):
print(git.run('branch', '-d', branch))
def main(args=None):
parser = argparse.ArgumentParser()
parser.add_argument('--verbose', '-v', action='store_true')
parser.add_argument('--keep-going', '-k', action='store_true',
help='Keep processing past failed rebases.')
parser.add_argument('--no_fetch', '--no-fetch', '-n',
action='store_true',
help='Skip fetching remotes.')
opts = parser.parse_args(args)
if opts.verbose: # pragma: no cover
logging.getLogger().setLevel(logging.DEBUG)
# TODO(iannucci): snapshot all branches somehow, so we can implement
# `git rebase-update --undo`.
# * Perhaps just copy packed-refs + refs/ + logs/ to the side?
# * commit them to a secret ref?
# * Then we could view a summary of each run as a
# `diff --stat` on that secret ref.
if git.in_rebase():
# TODO(iannucci): Be able to resume rebase with flags like --continue,
# etc.
print (
'Rebase in progress. Please complete the rebase before running '
'`git rebase-update`.'
)
return 1
return_branch, return_workdir = find_return_branch_workdir()
os.chdir(git.run('rev-parse', '--show-toplevel'))
if git.current_branch() == 'HEAD':
if git.run('status', '--porcelain'):
print 'Cannot rebase-update with detached head + uncommitted changes.'
return 1
else:
git.freeze() # just in case there are any local changes.
skipped, branch_tree = git.get_branch_tree()
for branch in skipped:
print 'Skipping %s: No upstream specified' % branch
if not opts.no_fetch:
fetch_remotes(branch_tree)
merge_base = {}
for branch, parent in branch_tree.iteritems():
merge_base[branch] = git.get_or_create_merge_base(branch, parent)
logging.debug('branch_tree: %s' % pformat(branch_tree))
logging.debug('merge_base: %s' % pformat(merge_base))
retcode = 0
unrebased_branches = []
# Rebase each branch starting with the root-most branches and working
# towards the leaves.
for branch, parent in git.topo_iter(branch_tree):
if git.is_dormant(branch):
print 'Skipping dormant branch', branch
else:
ret = rebase_branch(branch, parent, merge_base[branch])
if not ret:
retcode = 1
if opts.keep_going:
print '--keep-going set, continuing with next branch.'
unrebased_branches.append(branch)
if git.in_rebase():
git.run_with_retcode('rebase', '--abort')
if git.in_rebase(): # pragma: no cover
print 'Failed to abort rebase. Something is really wrong.'
break
else:
break
if unrebased_branches:
print
print 'The following branches could not be cleanly rebased:'
for branch in unrebased_branches:
print ' %s' % branch
if not retcode:
remove_empty_branches(branch_tree)
# return_branch may not be there any more.
if return_branch in git.branches():
git.run('checkout', return_branch)
git.thaw()
else:
root_branch = git.root()
if return_branch != 'HEAD':
print (
"%r was merged with its parent, checking out %r instead."
% (return_branch, root_branch)
)
git.run('checkout', root_branch)
if return_workdir:
os.chdir(return_workdir)
git.set_config(STARTING_BRANCH_KEY, '')
git.set_config(STARTING_WORKDIR_KEY, '')
return retcode
def main(args=None):
parser = argparse.ArgumentParser()
parser.add_argument('--verbose', '-v', action='store_true')
parser.add_argument('--no_fetch',
'--no-fetch',
'-n',
action='store_true',
help='Skip fetching remotes.')
opts = parser.parse_args(args)
if opts.verbose: # pragma: no cover
logging.getLogger().setLevel(logging.DEBUG)
# TODO(iannucci): snapshot all branches somehow, so we can implement
# `git rebase-update --undo`.
# * Perhaps just copy packed-refs + refs/ + logs/ to the side?
# * commit them to a secret ref?
# * Then we could view a summary of each run as a
# `diff --stat` on that secret ref.
if git.in_rebase():
# TODO(iannucci): Be able to resume rebase with flags like --continue,
# etc.
print(
'Rebase in progress. Please complete the rebase before running '
'`git rebase-update`.')
return 1
return_branch, return_workdir = find_return_branch_workdir()
os.chdir(git.run('rev-parse', '--show-toplevel'))
if git.current_branch() == 'HEAD':
if git.run('status', '--porcelain'):
print 'Cannot rebase-update with detached head + uncommitted changes.'
return 1
else:
git.freeze() # just in case there are any local changes.
skipped, branch_tree = git.get_branch_tree()
for branch in skipped:
print 'Skipping %s: No upstream specified' % branch
if not opts.no_fetch:
fetch_remotes(branch_tree)
merge_base = {}
for branch, parent in branch_tree.iteritems():
merge_base[branch] = git.get_or_create_merge_base(branch, parent)
logging.debug('branch_tree: %s' % pformat(branch_tree))
logging.debug('merge_base: %s' % pformat(merge_base))
retcode = 0
# Rebase each branch starting with the root-most branches and working
# towards the leaves.
for branch, parent in git.topo_iter(branch_tree):
if git.is_dormant(branch):
print 'Skipping dormant branch', branch
else:
ret = rebase_branch(branch, parent, merge_base[branch])
if not ret:
retcode = 1
break
if not retcode:
remove_empty_branches(branch_tree)
# return_branch may not be there any more.
if return_branch in git.branches():
git.run('checkout', return_branch)
git.thaw()
else:
root_branch = git.root()
if return_branch != 'HEAD':
print(
"%r was merged with its parent, checking out %r instead." %
(return_branch, root_branch))
git.run('checkout', root_branch)
if return_workdir:
os.chdir(return_workdir)
git.set_config(STARTING_BRANCH_KEY, '')
git.set_config(STARTING_WORKDIR_KEY, '')
return retcode
def main(args=None):
parser = argparse.ArgumentParser()
parser.add_argument('--verbose', '-v', action='store_true')
parser.add_argument('--keep-going', '-k', action='store_true',
help='Keep processing past failed rebases.')
parser.add_argument('--no_fetch', '--no-fetch', '-n',
action='store_true',
help='Skip fetching remotes.')
parser.add_argument(
'--current', action='store_true', help='Only rebase the current branch.')
parser.add_argument('branches', nargs='*',
help='Branches to be rebased. All branches are assumed '
'if none specified.')
opts = parser.parse_args(args)
if opts.verbose: # pragma: no cover
logging.getLogger().setLevel(logging.DEBUG)
# TODO(iannucci): snapshot all branches somehow, so we can implement
# `git rebase-update --undo`.
# * Perhaps just copy packed-refs + refs/ + logs/ to the side?
# * commit them to a secret ref?
# * Then we could view a summary of each run as a
# `diff --stat` on that secret ref.
if git.in_rebase():
# TODO(iannucci): Be able to resume rebase with flags like --continue,
# etc.
print('Rebase in progress. Please complete the rebase before running '
'`git rebase-update`.')
return 1
return_branch, return_workdir = find_return_branch_workdir()
os.chdir(git.run('rev-parse', '--show-toplevel'))
if git.current_branch() == 'HEAD':
if git.run('status', '--porcelain'):
print('Cannot rebase-update with detached head + uncommitted changes.')
return 1
else:
git.freeze() # just in case there are any local changes.
branches_to_rebase = set(opts.branches)
if opts.current:
branches_to_rebase.add(git.current_branch())
skipped, branch_tree = git.get_branch_tree()
if branches_to_rebase:
skipped = set(skipped).intersection(branches_to_rebase)
for branch in skipped:
print('Skipping %s: No upstream specified' % branch)
if not opts.no_fetch:
fetch_remotes(branch_tree)
merge_base = {}
for branch, parent in branch_tree.items():
merge_base[branch] = git.get_or_create_merge_base(branch, parent)
logging.debug('branch_tree: %s' % pformat(branch_tree))
logging.debug('merge_base: %s' % pformat(merge_base))
retcode = 0
unrebased_branches = []
# Rebase each branch starting with the root-most branches and working
# towards the leaves.
for branch, parent in git.topo_iter(branch_tree):
# Only rebase specified branches, unless none specified.
if branches_to_rebase and branch not in branches_to_rebase:
continue
if git.is_dormant(branch):
print('Skipping dormant branch', branch)
else:
ret = rebase_branch(branch, parent, merge_base[branch])
if not ret:
retcode = 1
if opts.keep_going:
print('--keep-going set, continuing with next branch.')
unrebased_branches.append(branch)
if git.in_rebase():
git.run_with_retcode('rebase', '--abort')
if git.in_rebase(): # pragma: no cover
print('Failed to abort rebase. Something is really wrong.')
break
else:
break
if unrebased_branches:
print()
print('The following branches could not be cleanly rebased:')
for branch in unrebased_branches:
print(' %s' % branch)
if not retcode:
remove_empty_branches(branch_tree)
# return_branch may not be there any more.
if return_branch in git.branches():
git.run('checkout', return_branch)
git.thaw()
else:
root_branch = git.root()
if return_branch != 'HEAD':
print("%s was merged with its parent, checking out %s instead." %
(git.unicode_repr(return_branch), git.unicode_repr(root_branch)))
git.run('checkout', root_branch)
# return_workdir may also not be there any more.
if return_workdir:
try:
os.chdir(return_workdir)
except OSError as e:
print(
"Unable to return to original workdir %r: %s" % (return_workdir, e))
git.set_config(STARTING_BRANCH_KEY, '')
git.set_config(STARTING_WORKDIR_KEY, '')
return retcode
