/brz/remove-bazaar

# Copyright (C) 2007 by Jelmer Vernooij

# 

# 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.commands import Command, Option, display_command, register_command

from bzrlib.errors import (BzrCommandError, ConflictsInTree, NoSuchFile, 

                           UnrelatedBranches)

from bzrlib.trace import info

class cmd_rebase(Command):

    """Re-base a branch.

    """

    takes_args = ['upstream_location?']

    takes_options = ['revision', 'merge-type', 

                     Option('onto', help='Different revision to replay onto')]

    @display_command

    def run(self, upstream_location=None, onto=None, revision=None, 

            merge_type=None):

        from bzrlib.branch import Branch

        from bzrlib.revisionspec import RevisionSpec

        from bzrlib.workingtree import WorkingTree

        from rebase import (generate_simple_plan, rebase, rebase_plan_exists, 

                            read_rebase_plan, remove_rebase_plan, 

                            workingtree_replay, write_rebase_plan)

        wt = WorkingTree.open('.')

        wt.lock_write()

        if upstream_location is None:

            upstream_location = wt.branch.get_parent()

        upstream = Branch.open(upstream_location)

        upstream_repository = upstream.repository

        upstream_revision = upstream.last_revision()

        try:

            # Abort if there already is a plan file

            if rebase_plan_exists(wt):

                raise BzrCommandError("A rebase operation was interrupted. Continue using 'bzr rebase-continue' or abort using 'bzr rebase-abort'")

            # Pull required revisions

            wt.branch.repository.fetch(upstream_repository, 

                                       upstream_revision)

            if onto is None:

                onto = upstream.last_revision()

            else:

                onto = RevisionSpec.from_string(onto)

            wt.branch.repository.fetch(upstream_repository, onto)

            revhistory = wt.branch.revision_history()

            revhistory.reverse()

            common_revid = None

            for revid in revhistory:

                if revid in upstream.revision_history():

                    common_revid = revid

                    break

            if common_revid is None:

                raise UnrelatedBranches()

            if common_revid == upstream.last_revision():

                raise BzrCommandError("Already rebased on %s" % upstream)

            start_revid = wt.branch.get_rev_id(

                    wt.branch.revision_id_to_revno(common_revid)+1)

            # Create plan

            replace_map = generate_simple_plan(

                    wt.branch.repository, 

                    wt.branch.revision_history(), start_revid, onto)

            # Write plan file

            write_rebase_plan(wt, replace_map)

            # Start executing plan

            try:

                rebase(wt.branch.repository, replace_map, workingtree_replay(wt, merge_type=merge_type))

            except ConflictsInTree:

                raise BzrCommandError("A conflict occurred replaying a commit. Resolve the conflict and run 'bzr rebase-continue' or run 'bzr rebase-abort'.")

            # Remove plan file

            remove_rebase_plan(wt)

        finally:

            wt.unlock()

class cmd_rebase_abort(Command):

    """Abort an interrupted rebase

    """

    @display_command

    def run(self):

        from rebase import read_rebase_plan, remove_rebase_plan, complete_revert

        from bzrlib.workingtree import WorkingTree

        wt = WorkingTree.open('.')

        wt.lock_write()

        try:

            # Read plan file and set last revision

            try:

                last_rev_info = read_rebase_plan(wt)[0]

            except NoSuchFile:

                raise BzrCommandError("No rebase to abort")

            complete_revert(wt, [last_rev_info[1]])

            remove_rebase_plan(wt)

        finally:

            wt.unlock()

class cmd_rebase_continue(Command):

    """Continue an interrupted rebase after resolving conflicts

    """

    takes_options = ['merge-type']

    @display_command

    def run(self, merge_type=None):

        from rebase import (commit_rebase, rebase, rebase_plan_exists, 

                            read_rebase_plan, read_active_rebase_revid, 

                            remove_rebase_plan, workingtree_replay)

        from bzrlib.workingtree import WorkingTree

        wt = WorkingTree.open('.')

        wt.lock_write()

        try:

            # Abort if there are any conflicts

            if len(wt.conflicts()) != 0:

                raise BzrCommandError("There are still conflicts present")

            # Read plan file

            try:

                replace_map = read_rebase_plan(wt)[1]

            except NoSuchFile:

                raise BzrCommandError("No rebase to continue")

            oldrevid = read_active_rebase_revid(wt)

            if oldrevid is not None:

                oldrev = wt.branch.repository.get_revision(oldrevid)

                commit_rebase(wt, oldrev, replace_map[oldrevid][0])

            try:

                # Start executing plan from current Branch.last_revision()

                rebase(wt.branch.repository, replace_map, 

                        workingtree_replay(wt, merge_type=merge_type))

            except ConflictsInTree:

                raise BzrCommandError("A conflict occurred replaying a commit. Resolve the conflict and run 'bzr rebase-continue' or run 'bzr rebase-abort'.")

            # Remove plan file  

            remove_rebase_plan(wt)

        finally:

            wt.unlock()

class cmd_rebase_todo(Command):

    """Print list of revisions that still need to be replayed as part of the 

    current rebase operation.

    """

    def run(self):

        from rebase import (rebase_todo, read_rebase_plan, 

                            read_active_rebase_revid)

        from bzrlib.workingtree import WorkingTree

        wt = WorkingTree.open('.')

        wt.lock_read()

        try:

            try:

                replace_map = read_rebase_plan(wt)[1]

            except NoSuchFile:

                raise BzrCommandError("No rebase in progress")

            currentrevid = read_active_rebase_revid(wt)

            if currentrevid is not None:

                info("Currently replaying: %s" % currentrevid)

            for revid in rebase_todo(wt.branch.repository, replace_map):

                info("%s -> %s" % (revid, replace_map[revid][0]))

        finally:

            wt.unlock()

register_command(cmd_rebase)

register_command(cmd_rebase_abort)

register_command(cmd_rebase_continue)

register_command(cmd_rebase_todo)

def test_suite():

    from unittest import TestSuite

    from bzrlib.tests import TestUtil

    loader = TestUtil.TestLoader()

    suite = TestSuite()

    testmod_names = ['test_rebase', 'test_maptree']

    suite.addTest(loader.loadTestsFromModuleNames(

                              ["%s.%s" % (__name__, i) for i in testmod_names]))

    return suite