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# Copyright (C) 2010-2018 Jelmer Vernooij <jelmer@jelmer.uk>
#
# 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
"""Conversion between refs and Bazaar revision pointers."""
from dulwich.refs import (
ANNOTATED_TAG_SUFFIX,
LOCAL_BRANCH_PREFIX,
LOCAL_TAG_PREFIX,
)
from dulwich.repo import (
RefsContainer,
)
from .. import (
errors,
osutils,
revision as _mod_revision,
)
def is_tag(x):
return x.startswith(LOCAL_TAG_PREFIX)
def is_head(x):
return x.startswith(LOCAL_BRANCH_PREFIX)
def is_peeled(x):
return x.endswith(ANNOTATED_TAG_SUFFIX)
def gather_peeled(refs):
ret = {}
for k, v in refs.items():
if is_peeled(k):
continue
try:
peeled = refs[k + ANNOTATED_TAG_SUFFIX]
unpeeled = v
except KeyError:
peeled = v
unpeeled = None
ret[k] = (peeled, unpeeled)
return ret
def branch_name_to_ref(name):
"""Map a branch name to a ref.
:param name: Branch name
:return: ref string
"""
if name == "":
return b"HEAD"
if not name.startswith("refs/"):
return LOCAL_BRANCH_PREFIX + osutils.safe_utf8(name)
else:
return osutils.safe_utf8(name)
def tag_name_to_ref(name):
"""Map a tag name to a ref.
:param name: Tag name
:return: ref string
"""
return LOCAL_TAG_PREFIX + osutils.safe_utf8(name)
def ref_to_branch_name(ref):
"""Map a ref to a branch name
:param ref: Ref
:return: A branch name
"""
if ref == b"HEAD":
return u""
if ref is None:
return ref
if ref.startswith(LOCAL_BRANCH_PREFIX):
return ref[len(LOCAL_BRANCH_PREFIX):].decode('utf-8')
raise ValueError("unable to map ref %s back to branch name" % ref)
def ref_to_tag_name(ref):
if ref.startswith(LOCAL_TAG_PREFIX):
return ref[len(LOCAL_TAG_PREFIX):].decode("utf-8")
raise ValueError("unable to map ref %s back to tag name" % ref)
class BazaarRefsContainer(RefsContainer):
def __init__(self, dir, object_store):
self.dir = dir
self.object_store = object_store
def get_packed_refs(self):
return {}
def set_symbolic_ref(self, name, other):
if name == b"HEAD":
pass # FIXME: Switch default branch
else:
raise NotImplementedError(
"Symbolic references not supported for anything other than "
"HEAD")
def _get_revid_by_tag_name(self, tag_name):
for branch in self.dir.list_branches():
try:
# FIXME: This is ambiguous!
return branch.tags.lookup_tag(tag_name)
except errors.NoSuchTag:
pass
return None
def _get_revid_by_branch_name(self, branch_name):
try:
branch = self.dir.open_branch(branch_name)
except errors.NoColocatedBranchSupport:
if branch_name in ("HEAD", "master"):
branch = self.dir.open_branch()
else:
raise
return branch.last_revision()
def read_loose_ref(self, ref):
try:
branch_name = ref_to_branch_name(ref)
except ValueError:
tag_name = ref_to_tag_name(ref)
revid = self._get_revid_by_tag_name(tag_name)
else:
revid = self._get_revid_by_branch_name(branch_name)
if revid == _mod_revision.NULL_REVISION:
return None
# FIXME: Unpeel if necessary
with self.object_store.lock_read():
return self.object_store._lookup_revision_sha1(revid)
def get_peeled(self, ref):
return self.read_loose_ref(ref)
def allkeys(self):
keys = set()
for branch in self.dir.list_branches():
repo = branch.repository
if repo.has_revision(branch.last_revision()):
ref = branch_name_to_ref(getattr(branch, "name", ""))
keys.add(ref)
try:
for tag_name, revid in branch.tags.get_tag_dict().items():
if repo.has_revision(revid):
keys.add(tag_name_to_ref(tag_name))
except errors.TagsNotSupported:
pass
return keys
def __delitem__(self, ref):
try:
branch_name = ref_to_branch_name(ref)
except ValueError:
return # FIXME: Cope with tags!
self.dir.destroy_branch(branch_name)
def __setitem__(self, ref, sha):
try:
branch_name = ref_to_branch_name(ref)
except ValueError:
# FIXME: Cope with tags!
return
try:
target_branch = self.repo_dir.open_branch(branch_name)
except errors.NotBranchError:
target_branch = self.repo.create_branch(branch_name)
rev_id = self.mapping.revision_id_foreign_to_bzr(sha)
with target_branch.lock_write():
target_branch.generate_revision_history(rev_id)
def get_refs_container(controldir, object_store):
fn = getattr(controldir, "get_refs_container", None)
if fn is not None:
return fn()
return BazaarRefsContainer(controldir, object_store)
def remote_refs_dict_to_tag_refs(refs_dict):
base = {}
peeled = {}
for k, v in refs_dict.items():
if is_peeled(k):
peeled[k[:-3]] = v
else:
base[k] = v
peeled[k] = v
all_keys = set().union(base.keys(), peeled.keys())
for n in all_keys:
try:
tag_name = ref_to_tag_name(n)
except ValueError:
continue
yield (n, tag_name, peeled.get(n), base.get(n))
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