1
# Copyright (C) 2007 Canonical Ltd
2
# Copyright (C) 2008-2009 Jelmer Vernooij <jelmer@samba.org>
4
# This program is free software; you can redistribute it and/or modify
5
# it under the terms of the GNU General Public License as published by
6
# the Free Software Foundation; either version 2 of the License, or
7
# (at your option) any later version.
9
# This program is distributed in the hope that it will be useful,
10
# but WITHOUT ANY WARRANTY; without even the implied warranty of
11
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12
# GNU General Public License for more details.
14
# You should have received a copy of the GNU General Public License
15
# along with this program; if not, write to the Free Software
16
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
"""An adapter between a Git Repository and a Bazaar Branch"""
32
from bzrlib.foreign import (
35
from bzrlib.trace import (
38
from bzrlib.transport import (
42
from bzrlib.plugins.git.commit import (
45
from bzrlib.plugins.git.foreign import (
48
from bzrlib.plugins.git.inventory import (
51
from bzrlib.plugins.git.mapping import (
56
from bzrlib.plugins.git.versionedfiles import (
65
class GitTags(object):
67
def __init__(self, tags):
71
return iter(self._tags)
74
class GitRepository(ForeignRepository):
75
"""An adapter to git repositories for bzr."""
78
_commit_builder_class = GitCommitBuilder
81
def __init__(self, gitdir, lockfiles):
82
ForeignRepository.__init__(self, GitRepositoryFormat(), gitdir,
84
from bzrlib.plugins.git import fetch, push
85
for optimiser in [fetch.InterRemoteGitNonGitRepository,
86
fetch.InterLocalGitNonGitRepository,
87
fetch.InterGitRepository,
88
push.InterToLocalGitRepository,
89
push.InterToRemoteGitRepository]:
90
repository.InterRepository.register_optimiser(optimiser)
95
def supports_rich_root(self):
98
def _warn_if_deprecated(self):
99
# This class isn't deprecated
102
def get_mapping(self):
103
return default_mapping
105
def make_working_trees(self):
108
def dfetch(self, source, stop_revision):
109
interrepo = repository.InterRepository.get(source, self)
110
return interrepo.dfetch(stop_revision)
112
def dfetch_refs(self, source, stop_revision):
113
interrepo = repository.InterRepository.get(source, self)
114
return interrepo.dfetch_refs(stop_revision)
117
class LocalGitRepository(GitRepository):
118
"""Git repository on the file system."""
120
def __init__(self, gitdir, lockfiles):
121
# FIXME: This also caches negatives. Need to be more careful
122
# about this once we start writing to git
123
self._parents_provider = graph.CachingParentsProvider(self)
124
GitRepository.__init__(self, gitdir, lockfiles)
125
self.base = gitdir.root_transport.base
126
self._git = gitdir._git
128
self.signatures = versionedfiles.VirtualSignatureTexts(self)
129
self.revisions = versionedfiles.VirtualRevisionTexts(self)
130
self.inventories = versionedfiles.VirtualInventoryTexts(self)
131
self.texts = GitTexts(self)
132
self.tags = GitTags(self._git.get_tags())
134
def all_revision_ids(self):
135
ret = set([revision.NULL_REVISION])
136
heads = self._git.heads()
139
bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in heads.itervalues()]
141
graph = self.get_graph()
142
for rev, parents in graph.iter_ancestry(bzr_heads):
146
#def get_revision_delta(self, revision_id):
147
# parent_revid = self.get_revision(revision_id).parent_ids[0]
148
# diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
149
# ids.convert_revision_id_bzr_to_git(revision_id))
151
def _make_parents_provider(self):
152
"""See Repository._make_parents_provider()."""
153
return self._parents_provider
155
def get_parent_map(self, revids):
157
for revision_id in revids:
158
assert isinstance(revision_id, str)
159
if revision_id == revision.NULL_REVISION:
160
parent_map[revision_id] = ()
162
hexsha, mapping = self.lookup_git_revid(revision_id)
163
commit = self._git.commit(hexsha)
167
parent_map[revision_id] = [mapping.revision_id_foreign_to_bzr(p) for p in commit.parents]
170
def get_ancestry(self, revision_id, topo_sorted=True):
171
"""See Repository.get_ancestry().
173
if revision_id is None:
174
return [None, revision.NULL_REVISION] + self._all_revision_ids()
175
assert isinstance(revision_id, str)
177
graph = self.get_graph()
178
for rev, parents in graph.iter_ancestry([revision_id]):
181
return [None] + ancestry
183
def get_signature_text(self, revision_id):
184
raise errors.NoSuchRevision(self, revision_id)
186
def lookup_revision_id(self, revid):
187
"""Lookup a revision id.
189
:param revid: Bazaar revision id.
190
:return: Tuple with git revisionid and mapping.
192
# Yes, this doesn't really work, but good enough as a stub
193
return osutils.sha(rev_id).hexdigest(), self.get_mapping()
195
def has_signature_for_revision_id(self, revision_id):
198
def lookup_git_revid(self, bzr_revid):
200
return mapping_registry.revision_id_bzr_to_foreign(bzr_revid)
201
except errors.InvalidRevisionId:
202
raise errors.NoSuchRevision(self, bzr_revid)
204
def get_revision(self, revision_id):
205
git_commit_id, mapping = self.lookup_git_revid(revision_id)
207
commit = self._git.commit(git_commit_id)
209
raise errors.NoSuchRevision(self, revision_id)
210
# print "fetched revision:", git_commit_id
211
revision = mapping.import_commit(commit)
212
assert revision is not None
215
def has_revision(self, revision_id):
217
self.get_revision(revision_id)
218
except errors.NoSuchRevision:
223
def get_revisions(self, revids):
224
return [self.get_revision(r) for r in revids]
226
def revision_trees(self, revids):
228
yield self.revision_tree(revid)
230
def revision_tree(self, revision_id):
231
revision_id = revision.ensure_null(revision_id)
232
if revision_id == revision.NULL_REVISION:
233
inv = inventory.Inventory(root_id=None)
234
inv.revision_id = revision_id
235
return revisiontree.RevisionTree(self, inv, revision_id)
236
return GitRevisionTree(self, revision_id)
238
def get_inventory(self, revision_id):
239
assert revision_id != None
240
return self.revision_tree(revision_id).inventory
242
def set_make_working_trees(self, trees):
245
def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref,
247
return self._git.fetch_objects(determine_wants, graph_walker, progress)
250
class GitRevisionTree(revisiontree.RevisionTree):
252
def __init__(self, repository, revision_id):
253
self._repository = repository
254
self._revision_id = revision_id
255
assert isinstance(revision_id, str)
256
git_id, self.mapping = repository.lookup_git_revid(revision_id)
258
commit = repository._git.commit(git_id)
260
raise errors.NoSuchRevision(repository, revision_id)
261
self.tree = commit.tree
262
self._inventory = GitInventory(self.tree, self.mapping, repository._git.object_store, revision_id)
264
def get_revision_id(self):
265
return self._revision_id
267
def get_file_text(self, file_id):
268
entry = self._inventory[file_id]
269
if entry.kind == 'directory': return ""
270
return entry.object.data
273
class GitRepositoryFormat(repository.RepositoryFormat):
274
"""Git repository format."""
276
supports_tree_reference = False
277
rich_root_data = True
279
def get_format_description(self):
280
return "Git Repository"
282
def initialize(self, url, shared=False, _internal=False):
283
raise bzr_errors.UninitializableFormat(self)
285
def check_conversion_target(self, target_repo_format):
286
return target_repo_format.rich_root_data