1
# Copyright (C) 2007 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
"""An adapter between a Git Repository and a Bazaar Branch"""
34
from bzrlib.foreign import (
37
from bzrlib.trace import mutter
38
from bzrlib.transport import get_transport
40
from bzrlib.plugins.git.foreign import (
43
from bzrlib.plugins.git.mapping import default_mapping, mapping_registry
44
from bzrlib.plugins.git.versionedfiles import GitTexts
49
class GitTags(object):
51
def __init__(self, tags):
55
return iter(self._tags)
58
class GitRepository(ForeignRepository):
59
"""An adapter to git repositories for bzr."""
63
def __init__(self, gitdir, lockfiles):
64
ForeignRepository.__init__(self, GitFormat(), gitdir, lockfiles)
65
from bzrlib.plugins.git import fetch
66
repository.InterRepository.register_optimiser(fetch.InterGitRepository)
67
repository.InterRepository.register_optimiser(fetch.InterGitNonGitRepository)
72
def supports_rich_root(self):
75
def _warn_if_deprecated(self):
76
# This class isn't deprecated
79
def get_mapping(self):
80
return default_mapping
82
def make_working_trees(self):
86
class LocalGitRepository(GitRepository):
88
def __init__(self, gitdir, lockfiles):
89
# FIXME: This also caches negatives. Need to be more careful
90
# about this once we start writing to git
91
self._parents_provider = graph.CachingParentsProvider(self)
92
GitRepository.__init__(self, gitdir, lockfiles)
93
self.base = gitdir.root_transport.base
94
self._git = gitdir._git
96
self.signatures = versionedfiles.VirtualSignatureTexts(self)
97
self.revisions = versionedfiles.VirtualRevisionTexts(self)
98
self.inventories = versionedfiles.VirtualInventoryTexts(self)
99
self.texts = GitTexts(self)
100
self.tags = GitTags(self._git.get_tags())
102
def all_revision_ids(self):
103
ret = set([revision.NULL_REVISION])
104
if self._git.heads() == []:
106
bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in self._git.heads()]
108
graph = self.get_graph()
109
for rev, parents in graph.iter_ancestry(bzr_heads):
113
#def get_revision_delta(self, revision_id):
114
# parent_revid = self.get_revision(revision_id).parent_ids[0]
115
# diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
116
# ids.convert_revision_id_bzr_to_git(revision_id))
118
def _make_parents_provider(self):
119
"""See Repository._make_parents_provider()."""
120
return self._parents_provider
122
def get_parent_map(self, revids):
124
mutter("get_parent_map(%r)", revids)
125
for revision_id in revids:
126
assert isinstance(revision_id, str)
127
if revision_id == revision.NULL_REVISION:
128
parent_map[revision_id] = ()
130
hexsha, mapping = self.lookup_git_revid(revision_id)
131
commit = self._git.commit(hexsha)
135
parent_map[revision_id] = [mapping.revision_id_foreign_to_bzr(p) for p in commit.parents]
138
def get_ancestry(self, revision_id, topo_sorted=True):
139
"""See Repository.get_ancestry().
141
if revision_id is None:
142
return self._all_revision_ids()
143
assert isinstance(revision_id, str)
145
graph = self.get_graph()
146
for rev, parents in graph.iter_ancestry([revision_id]):
147
if rev == revision.NULL_REVISION:
153
def import_revision_gist(self, source, revid):
156
def dfetch(self, source, stop_revision):
157
if stop_revision is None:
158
raise NotImplementedError
163
graph = source.get_graph()
164
for revid, parents in graph.iter_ancestry([stop_revision]):
165
if not self.has_revision(revid):
167
pb = ui.ui_factory.nested_progress_bar()
169
for i, revid in enumerate(reversed(todo)):
170
pb.update("pushing revisions", i, len(todo))
171
revidmap[revid] = self.import_revision_gist(source, revid)
178
def get_signature_text(self, revision_id):
179
raise errors.NoSuchRevision(self, revision_id)
181
def lookup_revision_id(self, revid):
182
"""Lookup a revision id.
184
:param revid: Bazaar revision id.
185
:return: Tuple with git revisionid and mapping.
187
# Yes, this doesn't really work, but good enough as a stub
188
return osutils.sha(rev_id).hexdigest(), self.get_mapping()
190
def has_signature_for_revision_id(self, revision_id):
193
def lookup_git_revid(self, bzr_revid):
195
return mapping_registry.revision_id_bzr_to_foreign(bzr_revid)
196
except errors.InvalidRevisionId:
197
raise errors.NoSuchRevision(self, bzr_revid)
199
def get_revision(self, revision_id):
200
git_commit_id, mapping = self.lookup_git_revid(revision_id)
202
commit = self._git.commit(git_commit_id)
204
raise errors.NoSuchRevision(self, revision_id)
205
# print "fetched revision:", git_commit_id
206
revision = mapping.import_commit(commit)
207
assert revision is not None
210
def has_revision(self, revision_id):
212
self.get_revision(revision_id)
213
except errors.NoSuchRevision:
218
def get_revisions(self, revids):
219
return [self.get_revision(r) for r in revids]
221
def revision_trees(self, revids):
223
yield self.revision_tree(revid)
225
def revision_tree(self, revision_id):
226
revision_id = revision.ensure_null(revision_id)
228
if revision_id == revision.NULL_REVISION:
229
inv = inventory.Inventory(root_id=None)
230
inv.revision_id = revision_id
231
return revisiontree.RevisionTree(self, inv, revision_id)
233
return GitRevisionTree(self, revision_id)
235
def get_inventory(self, revision_id):
236
assert revision_id != None
237
return self.revision_tree(revision_id).inventory
239
def set_make_working_trees(self, trees):
242
def fetch_objects(self, determine_wants, graph_walker, progress=None):
243
return self._git.fetch_objects(determine_wants, graph_walker, progress)
246
class GitRevisionTree(revisiontree.RevisionTree):
248
def __init__(self, repository, revision_id):
249
self._repository = repository
250
self.revision_id = revision_id
251
assert isinstance(revision_id, str)
252
git_id, self.mapping = repository.lookup_git_revid(revision_id)
254
commit = repository._git.commit(git_id)
256
raise errors.NoSuchRevision(repository, revision_id)
257
self.tree = commit.tree
258
self._inventory = inventory.Inventory(revision_id=revision_id)
259
self._inventory.root.revision = revision_id
260
self._build_inventory(self.tree, self._inventory.root, "")
262
def get_revision_id(self):
263
return self.revision_id
265
def get_file_text(self, file_id):
266
entry = self._inventory[file_id]
267
if entry.kind == 'directory': return ""
268
return self._repository._git.get_blob(entry.text_id).data
270
def _build_inventory(self, tree_id, ie, path):
271
assert isinstance(path, str)
272
tree = self._repository._git.tree(tree_id)
273
for mode, name, hexsha in tree.entries():
274
basename = name.decode("utf-8")
278
child_path = urlutils.join(path, name)
279
file_id = self.mapping.generate_file_id(child_path)
280
entry_kind = (mode & 0700000) / 0100000
282
child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
283
elif entry_kind == 1:
284
file_kind = (mode & 070000) / 010000
285
b = self._repository._git.get_blob(hexsha)
287
child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
288
child_ie.text_sha1 = osutils.sha_string(b.data)
290
child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
291
child_ie.text_sha1 = osutils.sha_string("")
293
raise AssertionError(
294
"Unknown file kind, perms=%o." % (mode,))
295
child_ie.text_id = b.id
296
child_ie.text_size = len(b.data)
298
raise AssertionError(
299
"Unknown blob kind, perms=%r." % (mode,))
300
fs_mode = mode & 0777
301
child_ie.executable = bool(fs_mode & 0111)
302
child_ie.revision = self.revision_id
303
self._inventory.add(child_ie)
305
self._build_inventory(hexsha, child_ie, child_path)
308
class GitFormat(object):
310
supports_tree_reference = False
311
rich_root_data = True
313
def get_format_description(self):
314
return "Git Repository"
316
def initialize(self, url, shared=False, _internal=False):
317
raise bzr_errors.UninitializableFormat(self)
319
def check_conversion_target(self, target_repo_format):
320
return target_repo_format.rich_root_data