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# Copyright (C) 2007 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""An adapter between a Git Repository and a Bazaar Branch"""
import git
import os
import time
import bzrlib
from bzrlib import (
deprecated_graph,
errors,
inventory,
osutils,
repository,
revision,
revisiontree,
urlutils,
versionedfile,
)
from bzrlib.transport import get_transport
from bzrlib.plugins.git import (
cache,
ids,
versionedfiles
)
class GitRepository(repository.Repository):
"""An adapter to git repositories for bzr."""
_serializer = None
def __init__(self, gitdir, lockfiles):
self.base = gitdir.root_transport.base
self.bzrdir = gitdir
self.control_files = lockfiles
self._git = gitdir._git
cache_dir = cache.create_cache_dir()
cachedir_transport = get_transport(cache_dir)
cache_file = os.path.join(cache_dir, 'cache-%s' % ids.NAMESPACE)
self.texts = None
self.signatures = versionedfiles.VirtualSignatureTexts(self)
self.revisions = versionedfiles.VirtualRevisionTexts(self)
self._format = GitFormat()
self._fallback_repositories = []
def _all_revision_ids(self):
if self._git.heads == []:
return set()
ret = set()
skip = 0
max_count = 1000
cms = None
while cms != []:
cms = self._git.commits("--all", max_count=max_count, skip=skip)
skip += max_count
ret.update([ids.convert_revision_id_git_to_bzr(cm.id) for cm in cms])
return ret
def is_shared(self):
return True
def supports_rich_root(self):
return False
#def get_revision_delta(self, revision_id):
# parent_revid = self.get_revision(revision_id).parent_ids[0]
# diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
# ids.convert_revision_id_bzr_to_git(revision_id))
def get_ancestry(self, revision_id):
revision_id = revision.ensure_null(revision_id)
ret = []
if revision_id != revision.NULL_REVISION:
skip = 0
max_count = 1000
cms = None
while cms != []:
cms = self._git.commits(ids.convert_revision_id_bzr_to_git(revision_id), max_count=max_count, skip=skip)
skip += max_count
ret += [ids.convert_revision_id_git_to_bzr(cm.id) for cm in cms]
return [None] + ret
def get_signature_text(self, revision_id):
raise errors.NoSuchRevision(self, revision_id)
def has_signature_for_revision_id(self, revision_id):
return False
def get_parent_map(self, revision_ids):
ret = {}
for revid in revision_ids:
if revid == revision.NULL_REVISION:
ret[revid] = ()
else:
commit = self._git.commit(ids.convert_revision_id_bzr_to_git(revid))
ret[revid] = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
return ret
def get_revision(self, revision_id):
git_commit_id = ids.convert_revision_id_bzr_to_git(revision_id)
commit = self._git.commit(git_commit_id)
# print "fetched revision:", git_commit_id
revision = self._parse_rev(commit)
return revision
def has_revision(self, revision_id):
try:
self.get_revision(revision_id)
except NoSuchRevision:
return False
else:
return True
def get_revisions(self, revisions):
return [self.get_revision(r) for r in revisions]
@classmethod
def _parse_rev(klass, commit):
"""Convert a git commit to a bzr revision.
:return: a `bzrlib.revision.Revision` object.
"""
rev = revision.Revision(ids.convert_revision_id_git_to_bzr(commit.id))
rev.parent_ids = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
rev.inventory_sha1 = ""
rev.message = commit.message.decode("utf-8", "replace")
rev.committer = str(commit.committer)
rev.properties['author'] = str(commit.author)
rev.timestamp = time.mktime(commit.committed_date)
rev.timezone = 0
return rev
def revision_trees(self, revids):
for revid in revids:
yield self.revision_tree(revid)
def revision_tree(self, revision_id):
revision_id = revision.ensure_null(revision_id)
if revision_id == revision.NULL_REVISION:
inv = inventory.Inventory(root_id=None)
inv.revision_id = revision_id
return revisiontree.RevisionTree(self, inv, revision_id)
return GitRevisionTree(self, revision_id)
def get_inventory(self, revision_id):
assert revision_id != None
return self.revision_tree(revision_id).inventory
def escape_file_id(file_id):
return file_id.replace('_', '__').replace(' ', '_s')
def unescape_file_id(file_id):
return file_id.replace("_s", " ").replace("__", "_")
class GitRevisionTree(revisiontree.RevisionTree):
def __init__(self, repository, revision_id):
self._repository = repository
self.revision_id = revision_id
git_id = ids.convert_revision_id_bzr_to_git(revision_id)
self.tree = repository._git.commit(git_id).tree
self._inventory = inventory.Inventory(revision_id=revision_id)
self._inventory.root.revision = revision_id
self._build_inventory(self.tree, self._inventory.root, "")
def get_revision_id(self):
return self.revision_id
def get_file_text(self, file_id):
entry = self._inventory[file_id]
if entry.kind == 'directory': return ""
return self._repository._git.blob(entry.text_id).data
def _build_inventory(self, tree, ie, path):
assert isinstance(path, str)
for b in tree.contents:
basename = b.name.decode("utf-8")
if path == "":
child_path = b.name
else:
child_path = urlutils.join(path, b.name)
file_id = escape_file_id(child_path.encode('utf-8'))
if b.mode[0] == '0':
child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
elif b.mode[0] == '1':
if b.mode[1] == '0':
child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
child_ie.text_sha1 = osutils.sha_string(b.data)
elif b.mode[1] == '2':
child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
child_ie.text_sha1 = osutils.sha_string("")
else:
raise AssertionError(
"Unknown file kind, perms=%r." % (b.mode,))
child_ie.text_id = b.id
child_ie.text_size = b.size
else:
raise AssertionError(
"Unknown blob kind, perms=%r." % (b.mode,))
child_ie.executable = bool(int(b.mode[3:], 8) & 0111)
child_ie.revision = self.revision_id
self._inventory.add(child_ie)
if b.mode[0] == '0':
self._build_inventory(b, child_ie, child_path)
class GitFormat(object):
supports_tree_reference = False
def get_format_description(self):
return "Git Repository"
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