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Viewing changes to bzrlib/reconfigure.py

  • Committer: John Arbash Meinel
  • Date: 2009-07-08 15:43:51 UTC
  • mto: This revision was merged to the branch mainline in revision 4521.
  • Revision ID: john@arbash-meinel.com-20090708154351-u0t41fwjqm28pbnu
Add comments in the finally sections as to why we want them.

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bzrlib/reconfigure.py
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# Copyright (C) 2007-2010 Canonical Ltd
 
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# Copyright (C) 2007 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Reconfigure a bzrdir into a new tree/branch/repository layout.
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Various types of reconfiguration operation are available either by
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constructing a class or using a factory method on Reconfigure.
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"""
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"""Reconfigure a bzrdir into a new tree/branch/repository layout"""
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from bzrlib import (
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    branch,
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    bzrdir,
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    errors,
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    trace,
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    ui,
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    urlutils,
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    )
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# TODO: common base class for all reconfigure operations, making no
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# assumptions about what kind of change will be done.
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class ReconfigureStackedOn(object):
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    """Reconfigures a branch to be stacked on another branch."""
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    def apply(self, bzrdir, stacked_on_url):
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        branch = bzrdir.open_branch()
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        # it may be a path relative to the cwd or a url; the branch wants
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        # a path relative to itself...
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        on_url = urlutils.relative_url(branch.base,
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            urlutils.normalize_url(stacked_on_url))
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        branch.lock_write()
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        try:
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            branch.set_stacked_on_url(on_url)
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            if not trace.is_quiet():
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                ui.ui_factory.note(
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                    "%s is now stacked on %s\n"
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                    % (branch.base, branch.get_stacked_on_url()))
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        finally:
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            branch.unlock()
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class ReconfigureUnstacked(object):
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    def apply(self, bzrdir):
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        branch = bzrdir.open_branch()
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        branch.lock_write()
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        try:
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            branch.set_stacked_on_url(None)
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            if not trace.is_quiet():
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                ui.ui_factory.note(
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                    "%s is now not stacked\n"
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                    % (branch.base,))
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        finally:
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            branch.unlock()
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class Reconfigure(object):
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    def __init__(self, bzrdir, new_bound_location=None):
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            self.repository = None
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            self.local_repository = None
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        else:
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            if (self.repository.user_url == self.bzrdir.user_url):
 
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            if (self.repository.bzrdir.root_transport.base ==
 
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                self.bzrdir.root_transport.base):
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                self.local_repository = self.repository
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            else:
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                self.local_repository = None
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        try:
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            branch = self.bzrdir.open_branch()
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            if branch.user_url == bzrdir.user_url:
 
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            if branch.bzrdir.root_transport.base == bzrdir.root_transport.base:
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                self.local_branch = branch
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                self.referenced_branch = None
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            else:
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            if not want_reference:
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                self._create_repository = True
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        else:
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            if want_reference and (
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                self.repository.user_url == self.bzrdir.user_url):
 
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            if want_reference and (self.repository.bzrdir.root_transport.base
 
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                                   == self.bzrdir.root_transport.base):
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                if not self.repository.is_shared():
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                    self._destroy_repository = True
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        if self.referenced_branch is None:
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    def _check(self):
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        """Raise if reconfiguration would destroy local changes"""
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        if self._destroy_tree and self.tree.has_changes():
 
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        if self._destroy_tree:
 
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            changes = self.tree.changes_from(self.tree.basis_tree())
 
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            if changes.has_changed():
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                raise errors.UncommittedChanges(self.tree)
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        if self._create_reference and self.local_branch is not None:
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            reference_branch = branch.Branch.open(self._select_bind_location())
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            if self._create_reference:
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                reference_branch.repository.fetch(self.repository)
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            elif self.local_branch is not None and not self._destroy_branch:
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                up = self.local_branch.user_transport.clone('..')
 
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                up = self.local_branch.bzrdir.root_transport.clone('..')
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                up_bzrdir = bzrdir.BzrDir.open_containing_from_transport(up)[0]
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                new_repo = up_bzrdir.find_repository()
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                new_repo.fetch(self.repository)
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            local_branch = self.local_branch
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        if self._create_reference:
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            format = branch.BranchReferenceFormat().initialize(self.bzrdir,
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                target_branch=reference_branch)
 
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                reference_branch)
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        if self._destroy_tree:
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            self.bzrdir.destroy_workingtree()
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        if self._create_tree: