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# vim: set fileencoding=utf-8 :
#
# (C) 2009 Guido Guenther <agx@sigxcpu.org>
# 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
#
# heavily inspired by dom-safe-pull which is © 2009 Stéphane Glondu <steph@glondu.net>
#
"""fast forward debian, upstream and pristine-tar branch"""
import sys
import os, os.path
from gbp.command_wrappers import (Command,
CommandExecFailed, PristineTar)
from gbp.config import (GbpOptionParser, GbpOptionGroup)
from gbp.errors import GbpError
from gbp.git import (GitRepositoryError, GitRepository)
import gbp.log
def fast_forward_branch(branch, repo, options):
"""
update branch to its remote branch, fail on non fast forward updates
unless --force is given
@return: branch updated or already up to date
@rtype: boolean
"""
update = False
remote = repo.get_merge_branch(branch)
if not remote:
gbp.log.warn("No branch tracking '%s' found - skipping." % branch)
return False
can_fast_forward, up_to_date = repo.is_fast_forward(branch, remote)
if up_to_date: # Great, we're done
gbp.log.info("Branch '%s' is already up to date." % branch)
return True
if can_fast_forward:
update = True
else:
if options.force:
gbp.log.info("Non-fast forwarding '%s' due to --force" % branch)
update = True
else:
gbp.log.warn("Skipping non-fast forward of '%s' - use --force" % branch)
if update:
gbp.log.info("Updating '%s'" % branch)
if repo.branch == branch:
repo.merge(remote)
else:
sha1 = repo.rev_parse(remote)
repo.update_ref("refs/heads/%s" % branch, sha1,
msg="gbp: forward %s to %s" % (branch, remote))
return update
def main(argv):
retval = 0
parser = GbpOptionParser(command=os.path.basename(argv[0]), prefix='',
usage='%prog [options] - safely update a repository from remote')
branch_group = GbpOptionGroup(parser, "branch options", "branch update and layout options")
parser.add_option_group(branch_group)
branch_group.add_option("--force", action="store_true", dest="force", default=False,
help="force a branch update even if can't be fast forwarded")
branch_group.add_option("--redo-pq", action="store_true", dest="redo_pq", default=False,
help="redo the patch queue branch after a pull. Warning: this drops the old patch-queue branch")
branch_group.add_config_file_option(option_name="upstream-branch", dest="upstream_branch")
branch_group.add_config_file_option(option_name="debian-branch", dest="debian_branch")
branch_group.add_boolean_config_file_option(option_name="pristine-tar", dest="pristine_tar")
branch_group.add_option("--depth", action="store", dest="depth", default=0,
help="git history depth (for deepening shallow clones)")
parser.add_option("-v", "--verbose", action="store_true", dest="verbose", default=False,
help="verbose command execution")
parser.add_config_file_option(option_name="color", dest="color", type='tristate')
(options, args) = parser.parse_args(argv)
gbp.log.setup(options.color, options.verbose)
try:
repo = GitRepository(os.path.curdir)
except GitRepositoryError:
gbp.log.err("%s is not a git repository" % (os.path.abspath('.')))
return 1
try:
branches = []
current = repo.get_branch()
for branch in [ options.debian_branch, options.upstream_branch ]:
if repo.has_branch(branch):
branches += [ branch ]
if repo.has_branch(PristineTar.branch) and options.pristine_tar:
branches += [ PristineTar.branch ]
(ret, out) = repo.is_clean()
if not ret:
gbp.log.err("You have uncommitted changes in your source tree:")
gbp.log.err(out)
raise GbpError
repo.fetch(options.depth)
for branch in branches:
if not fast_forward_branch(branch, repo, options):
retval = 2
if options.redo_pq:
repo.set_branch(options.debian_branch)
Command("gbp-pq")(["drop"])
Command("gbp-pq")(["import"])
repo.set_branch(current)
except CommandExecFailed:
retval = 1
except GbpError, err:
if len(err.__str__()):
gbp.log.err(err)
retval = 1
return retval
if __name__ == '__main__':
sys.exit(main(sys.argv))
# vim:et:ts=4:sw=4:et:sts=4:ai:set list listchars=tab\:»·,trail\:·:
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