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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""UI helper for the push command."""
from bzrlib import (
builtins,
branch,
bzrdir,
errors,
revision as _mod_revision,
transport,
)
from bzrlib.trace import (
note,
warning,
)
class PushResult(object):
"""Result of a push operation.
:ivar branch_push_result: Result of a push between branches
:ivar target_branch: The target branch
:ivar stacked_on: URL of the branch on which the result is stacked
:ivar workingtree_updated: Whether or not the target workingtree was updated.
"""
def __init__(self):
self.branch_push_result = None
self.stacked_on = None
self.workingtree_updated = None
self.target_branch = None
def report(self, to_file):
"""Write a human-readable description of the result."""
if self.branch_push_result is None:
if self.stacked_on is not None:
note('Created new stacked branch referring to %s.' %
self.stacked_on)
else:
note('Created new branch.')
else:
self.branch_push_result.report(to_file)
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)
try:
dir_to = bzrdir.BzrDir.open_from_transport(to_transport)
except errors.NotBranchError:
# Didn't find anything
dir_to = None
if dir_to is None:
try:
br_to = br_from.create_clone_on_transport(to_transport,
revision_id=revision_id, stacked_on=stacked_on,
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
except errors.FileExists, err:
if err.path.endswith('/.bzr'):
raise errors.BzrCommandError(
"Target directory %s already contains a .bzr directory, "
"but it is not valid." % (location,))
if not use_existing_dir:
raise errors.BzrCommandError("Target directory %s"
" already exists, but does not have a .bzr"
" directory. Supply --use-existing-dir to push"
" there anyway." % location)
# This shouldn't occur, but if it does the FileExists error will be
# more informative than an UnboundLocalError for br_to.
raise
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)
except errors.TooManyRedirections:
raise errors.BzrCommandError("Too many redirections trying "
"to make %s." % location)
push_result = PushResult()
# TODO: Some more useful message about what was copied
try:
push_result.stacked_on = br_to.get_stacked_on_url()
except (errors.UnstackableBranchFormat,
errors.UnstackableRepositoryFormat,
errors.NotStacked):
push_result.stacked_on = None
push_result.target_branch = br_to
push_result.old_revid = _mod_revision.NULL_REVISION
push_result.old_revno = 0
if br_from.get_push_location() is None or remember:
br_from.set_push_location(br_to.base)
else:
if stacked_on is not None:
warning("Ignoring request for a stacked branch as repository "
"already exists at the destination location.")
try:
push_result = dir_to.push_branch(br_from, revision_id, overwrite,
remember, create_prefix)
except errors.DivergedBranches:
raise errors.BzrCommandError('These branches have diverged.'
' See "bzr help diverged-branches"'
' for more information.')
except errors.NoRoundtrippingSupport, e:
raise errors.BzrCommandError("It is not possible to losslessly "
"push to %s. You may want to use dpush instead." %
e.target_branch.mapping.vcs.abbreviation)
except errors.NoRepositoryPresent:
# 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)
if push_result.workingtree_updated == False:
warning("This transport does not update the working "
"tree of: %s. See 'bzr help working-trees' for "
"more information." % push_result.target_branch.base)
push_result.report(to_file)
if verbose:
br_to = push_result.target_branch
br_to.lock_read()
try:
from bzrlib.log import show_branch_change
show_branch_change(br_to, to_file, push_result.old_revno,
push_result.old_revid)
finally:
br_to.unlock()
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