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# Copyright (C) 2008 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
"""UI helper for the push command."""
from bzrlib import builtins, bzrdir, errors, transport
from bzrlib.trace import note, warning
def _show_push_branch(br_from, revision_id, location, to_file, verbose=False,
overwrite=False, remember=False, stacked_on=None, create_prefix=False,
use_existing_dir=False):
"""Push a branch to a location.
:param br_from: the source branch
:param revision_id: the revision-id to push up to
:param location: the url of the destination
:param to_file: the output stream
:param verbose: if True, display more output than normal
:param overwrite: if False, a current branch at the destination may not
have diverged from the source, otherwise the push fails
:param remember: if True, store the location as the push location for
the source branch
:param stacked_on: the url of the branch, if any, to stack on;
if set, only the revisions not in that branch are pushed
:param create_prefix: if True, create the necessary parent directories
at the destination if they don't already exist
:param use_existing_dir: if True, proceed even if the destination
directory exists without a current .bzr directory in it
"""
to_transport = transport.get_transport(location)
br_to = repository_to = dir_to = None
try:
dir_to = bzrdir.BzrDir.open_from_transport(to_transport)
except errors.NotBranchError:
pass # Didn't find anything
else:
# If we can open a branch, use its direct repository, otherwise see
# if there is a repository without a branch.
try:
br_to = dir_to.open_branch()
except errors.NotBranchError:
# Didn't find a branch, can we find a repository?
try:
repository_to = dir_to.find_repository()
except errors.NoRepositoryPresent:
pass
else:
# Found a branch, so we must have found a repository
repository_to = br_to.repository
push_result = None
if verbose:
old_rh = []
if dir_to is None:
# The destination doesn't exist; create it.
# XXX: Refactor the create_prefix/no_create_prefix code into a
# common helper function
def make_directory(transport):
transport.mkdir('.')
return transport
def redirected(redirected_transport, e, redirection_notice):
return transport.get_transport(e.get_target_url())
try:
to_transport = transport.do_catching_redirections(
make_directory, to_transport, redirected)
except errors.FileExists:
if not use_existing_dir:
raise errors.BzrCommandError("Target directory %s"
" already exists, but does not have a valid .bzr"
" directory. Supply --use-existing-dir to push"
" there anyway." % location)
except errors.NoSuchFile:
if not create_prefix:
raise errors.BzrCommandError("Parent directory of %s"
" does not exist."
"\nYou may supply --create-prefix to create all"
" leading parent directories."
% location)
builtins._create_prefix(to_transport)
except errors.TooManyRedirections:
raise errors.BzrCommandError("Too many redirections trying "
"to make %s." % location)
# Now the target directory exists, but doesn't have a .bzr
# directory. So we need to create it, along with any work to create
# all of the dependent branches, etc.
dir_to = br_from.bzrdir.clone_on_transport(to_transport,
revision_id=revision_id, stacked_on=stacked_on)
br_to = dir_to.open_branch()
# TODO: Some more useful message about what was copied
try:
finally_stacked_on = br_to.get_stacked_on_url()
except (errors.UnstackableBranchFormat,
errors.UnstackableRepositoryFormat,
errors.NotStacked):
finally_stacked_on = None
if finally_stacked_on is not None:
note('Created new stacked branch referring to %s.' %
finally_stacked_on)
else:
note('Created new branch.')
# We successfully created the target, remember it
if br_from.get_push_location() is None or remember:
br_from.set_push_location(br_to.base)
elif repository_to is None:
# we have a bzrdir but no branch or repository
# XXX: Figure out what to do other than complain.
raise errors.BzrCommandError("At %s you have a valid .bzr control"
" directory, but not a branch or repository. This is an"
" unsupported configuration. Please move the target directory"
" out of the way and try again."
% location)
elif br_to is None:
# We have a repository but no branch, copy the revisions, and then
# create a branch.
if stacked_on is not None:
warning("Ignoring request for a stacked branch as repository "
"already exists at the destination location.")
repository_to.fetch(br_from.repository, revision_id=revision_id)
br_to = br_from.clone(dir_to, revision_id=revision_id)
note('Created new branch.')
if br_from.get_push_location() is None or remember:
br_from.set_push_location(br_to.base)
else: # We have a valid to branch
if stacked_on is not None:
warning("Ignoring request for a stacked branch as branch "
"already exists at the destination location.")
# We were able to connect to the remote location, so remember it.
# (We don't need to successfully push because of possible divergence.)
if br_from.get_push_location() is None or remember:
br_from.set_push_location(br_to.base)
if verbose:
old_rh = br_to.revision_history()
try:
try:
tree_to = dir_to.open_workingtree()
except errors.NotLocalUrl:
warning("This transport does not update the working "
"tree of: %s. See 'bzr help working-trees' for "
"more information." % br_to.base)
push_result = br_from.push(br_to, overwrite,
stop_revision=revision_id)
except errors.NoWorkingTree:
push_result = br_from.push(br_to, overwrite,
stop_revision=revision_id)
else:
tree_to.lock_write()
try:
push_result = br_from.push(tree_to.branch, overwrite,
stop_revision=revision_id)
tree_to.update()
finally:
tree_to.unlock()
except errors.DivergedBranches:
raise errors.BzrCommandError('These branches have diverged.'
' Try using "merge" and then "push".')
if push_result is not None:
push_result.report(to_file)
elif verbose:
new_rh = br_to.revision_history()
if old_rh != new_rh:
# Something changed
from bzrlib.log import show_changed_revisions
show_changed_revisions(br_to, old_rh, new_rh,
to_file=to_file)
else:
# we probably did a clone rather than a push, so a message was
# emitted above
pass
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