17
17
"""An adapter between a Git Repository and a Bazaar Branch"""
24
19
from bzrlib import (
35
from bzrlib.transport import get_transport
37
28
from bzrlib.plugins.git import (
46
34
class GitRepository(repository.Repository):
47
35
"""An adapter to git repositories for bzr."""
51
37
def __init__(self, gitdir, lockfiles):
52
self.base = gitdir.root_transport.base
53
38
self.bzrdir = gitdir
54
39
self.control_files = lockfiles
55
self._git = git.repo.Repo(gitdir.root_transport.local_abspath("."))
57
self._blob_info_cache = {}
58
cache_dir = cache.create_cache_dir()
59
cachedir_transport = get_transport(cache_dir)
60
cache_file = os.path.join(cache_dir, 'cache-%s' % ids.NAMESPACE)
61
if not cachedbs.has_key(cache_file):
62
cachedbs[cache_file] = cache.sqlite3.connect(cache_file)
63
self.cachedb = cachedbs[cache_file]
66
self.signatures = versionedfile.VirtualSignatureTexts(self)
68
self._format = GitFormat()
69
self._fallback_repositories = []
40
gitdirectory = gitdir.transport.local_abspath('.')
41
self._git = model.GitModel(gitdirectory)
42
self._revision_cache = {}
71
def _init_cachedb(self):
72
self.cachedb.executescript("""
73
create table if not exists inventory (
75
create unique index if not exists inventory_revid
77
create table if not exists entry_revision (
83
create unique index if not exists entry_revision_revid_path
84
on entry_revision (inventory, path);
44
def _ancestor_revisions(self, revision_ids):
45
if revision_ids is not None:
46
git_revisions = [gitrevid_from_bzr(r) for r in revision_ids]
49
for lines in self._git.ancestor_lines(git_revisions):
50
yield self._parse_rev(lines)
88
52
def is_shared(self):
91
def supports_rich_root(self):
94
def get_ancestry(self, revision_id):
95
revision_id = revision.ensure_null(revision_id)
97
if revision_id != revision.NULL_REVISION:
102
cms = self._git.commits(ids.convert_revision_id_bzr_to_git(revision_id), max_count=max_count, skip=skip)
104
ret += [ids.convert_revision_id_git_to_bzr(cm.id) for cm in cms]
107
def get_signature_text(self, revision_id):
108
raise errors.NoSuchRevision(self, revision_id)
110
def has_signature_for_revision_id(self, revision_id):
113
def get_parent_map(self, revision_ids):
115
for revid in revision_ids:
116
commit = self._git.commit(ids.convert_revision_id_bzr_to_git(revid))
117
ret[revid] = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
55
def get_revision_graph(self, revision_id=None):
57
if revision_id is not None:
58
param = [ids.convert_revision_id_bzr_to_git(revision_id)]
61
for node, parents in self._git.ancestry(param).iteritems():
62
bzr_node = ids.convert_revision_id_git_to_bzr(node)
63
bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
65
result[bzr_node] = bzr_parents
68
def get_revision_graph_with_ghosts(self, revision_ids=None):
69
graph = deprecated_graph.Graph()
70
if revision_ids is not None:
71
revision_ids = [ids.convert_revision_id_bzr_to_git(r)
72
for r in revision_ids]
73
for node, parents in self._git.ancestry(revision_ids).iteritems():
74
bzr_node = ids.convert_revision_id_git_to_bzr(node)
75
bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
78
graph.add_node(bzr_node, bzr_parents)
120
81
def get_revision(self, revision_id):
121
git_commit_id = ids.convert_revision_id_bzr_to_git(revision_id)
122
commit = self._git.commit(git_commit_id)
123
# print "fetched revision:", git_commit_id
124
revision = self._parse_rev(commit)
82
if revision_id in self._revision_cache:
83
return self._revision_cache[revision_id]
84
raw = self._git.rev_list(
85
[ids.convert_revision_id_bzr_to_git(revision_id)],
86
max_count=1, header=True)
87
return self._parse_rev(raw)
127
89
def has_revision(self, revision_id):
136
98
return [self.get_revision(r) for r in revisions]
139
def _parse_rev(klass, commit):
140
"""Convert a git commit to a bzr revision.
101
def _parse_rev(klass, raw):
102
"""Parse a single git revision.
104
* The first line is the git commit id.
105
* Following lines conform to the 'name value' structure, until the
107
* All lines after the first blank line and until the NULL line have 4
108
leading spaces and constitute the commit message.
110
:param raw: sequence of newline-terminated strings, its last item is a
111
single NULL character.
142
112
:return: a `bzrlib.revision.Revision` object.
144
rev = revision.Revision(ids.convert_revision_id_git_to_bzr(commit.id))
145
rev.parent_ids = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
117
committer_was_set = False
118
revision_id = ids.convert_revision_id_git_to_bzr(raw[0][:-1])
119
rev = revision.Revision(revision_id)
146
120
rev.inventory_sha1 = ""
147
rev.message = commit.message.decode("utf-8", "replace")
148
rev.committer = str(commit.committer)
149
rev.properties['author'] = str(commit.author)
150
rev.timestamp = time.mktime(commit.committed_date)
121
assert raw[-1] == '\x00', (
122
"Last item of raw was not a single NULL character.")
123
for line in raw[1:-1]:
125
assert line[:4] == ' ', (
126
"Unexpected line format in commit message: %r" % line)
127
message_lines.append(line[4:])
132
name, value = line[:-1].split(' ', 1)
134
rev.parent_ids.append(
135
ids.convert_revision_id_git_to_bzr(value))
138
author, timestamp, timezone = value.rsplit(' ', 2)
139
rev.properties['author'] = author
140
rev.properties['git-author-timestamp'] = timestamp
141
rev.properties['git-author-timezone'] = timezone
142
if not committer_was_set:
143
rev.committer = author
144
rev.timestamp = float(timestamp)
145
rev.timezone = klass._parse_tz(timezone)
147
if name == 'committer':
148
committer_was_set = True
149
committer, timestamp, timezone = value.rsplit(' ', 2)
150
rev.committer = committer
151
rev.timestamp = float(timestamp)
152
rev.timezone = klass._parse_tz(timezone)
155
rev.properties['git-tree-id'] = value
158
rev.message = ''.join(message_lines)
162
def _parse_tz(klass, tz):
163
"""Parse a timezone specification in the [+|-]HHMM format.
165
:return: the timezone offset in seconds.
168
sign = {'+': +1, '-': -1}[tz[0]]
170
minutes = int(tz[3:])
171
return float(sign * 60 * (60 * hours + minutes))
154
173
def revision_trees(self, revids):
155
174
for revid in revids:
156
175
yield self.revision_tree(revid)
158
177
def revision_tree(self, revision_id):
159
revision_id = revision.ensure_null(revision_id)
161
if revision_id == revision.NULL_REVISION:
162
inv = inventory.Inventory(root_id=None)
163
inv.revision_id = revision_id
164
return revisiontree.RevisionTree(self, inv, revision_id)
166
178
return GitRevisionTree(self, revision_id)
168
def _fetch_blob(self, git_id):
169
lines = self._git.cat_file('blob', git_id)
170
# print "fetched blob:", git_id
171
if self._building_inventory is not None:
172
self._building_inventory.git_file_data[git_id] = lines
175
def _get_blob(self, git_id):
177
return self._blob_cache[git_id]
179
return self._fetch_blob(git_id)
181
def _get_blob_caching(self, git_id):
183
return self._blob_cache[git_id]
185
lines = self._fetch_blob(git_id)
186
self._blob_cache[git_id] = lines
189
def _get_blob_info(self, git_id):
191
return self._blob_info_cache[git_id]
193
lines = self._get_blob(git_id)
194
size = sum(len(line) for line in lines)
195
sha1 = osutils.sha_strings(lines)
196
self._blob_info_cache[git_id] = (size, sha1)
199
180
def get_inventory(self, revision_id):
200
assert revision_id != None
201
return self.revision_tree(revision_id).inventory
203
def _set_entry_text_info(self, inv, entry, git_id):
204
if entry.kind == 'directory':
206
size, sha1 = self._get_blob_info(git_id)
207
entry.text_size = size
208
entry.text_sha1 = sha1
209
if entry.kind == 'symlink':
210
lines = self._get_blob_caching(git_id)
211
entry.symlink_target = ''.join(lines)
213
def _get_file_revision(self, revision_id, path):
214
lines = self._git.rev_list(
215
[ids.convert_revision_id_bzr_to_git(revision_id)],
216
max_count=1, topo_order=True, paths=[path])
218
result = ids.convert_revision_id_git_to_bzr(line[:-1])
219
# print "fetched file revision", line[:-1], path
222
def _get_entry_revision_from_db(self, revid, path, git_id, executable):
223
result = self.cachedb.execute(
224
"select revision from entry_revision where"
225
" inventory=? and path=? and gitid=? and executable=?",
226
(revid, path, git_id, executable)).fetchone()
232
def _set_entry_revision_in_db(self, revid, path, git_id, executable, revision):
233
self.cachedb.execute(
234
"insert into entry_revision"
235
" (inventory, path, gitid, executable, revision)"
236
" values (?, ?, ?, ?, ?)",
237
(revid, path, git_id, executable, revision))
239
def _all_inventories_in_db(self, revids):
241
result = self.cachedb.execute(
242
"select count(*) from inventory where revid = ?",
248
def _set_entry_revision(self, entry, revid, path, git_id):
249
# If a revision is in the cache, we assume it contains entries for the
250
# whole inventory. So if all parent revisions are in the cache, but no
251
# parent entry is present, then the entry revision is the current
252
# revision. That amortizes the number of _get_file_revision calls for
253
# large pulls to a "small number".
254
entry_rev = self._get_entry_revision_from_db(
255
revid, path, git_id, entry.executable)
256
if entry_rev is not None:
257
entry.revision = entry_rev
260
revision = self.get_revision(revid)
261
for parent_id in revision.parent_ids:
262
entry_rev = self._get_entry_revision_from_db(
263
parent_id, path, git_id, entry.executable)
264
if entry_rev is not None:
267
if self._all_inventories_in_db(revision.parent_ids):
181
if revision_id is None:
182
revision_id = revision.NULL_REVISION
183
if revision_id == revision.NULL_REVISION:
184
return inventory.Inventory(
185
revision_id=revision_id, root_id=None)
186
git_commit = ids.convert_revision_id_bzr_to_git(revision_id)
187
git_inventory = self._git.get_inventory(git_commit)
188
return self._parse_inventory(revision_id, git_inventory)
191
def _parse_inventory(klass, revid, git_inv):
192
# For now, git inventory do not have root ids. It is not clear that we
193
# can reliably support root ids. -- David Allouche 2007-12-28
194
inv = inventory.Inventory(revision_id=revid)
195
for perms, git_kind, git_id, path in git_inv:
198
if git_kind == 'blob':
202
executable = bool(int(perms[-3:], 8) & 0111)
203
elif perms[1] == '2':
206
raise AssertionError(
207
"Unknown blob kind, perms=%r." % (perms,))
208
elif git_kind == 'tree':
270
entry_rev = self._get_file_revision(revid, path)
271
self._set_entry_revision_in_db(
272
revid, path, git_id, entry.executable, entry_rev)
273
#self.cachedb.commit()
274
entry.revision = entry_rev
277
def escape_file_id(file_id):
278
return file_id.replace('_', '__').replace(' ', '_s')
211
raise AssertionError(
212
"Unknown git entry kind: %r" % (git_kind,))
213
# XXX: Maybe the file id should be prefixed by file kind, so when
214
# the kind of path changes, the id changes too.
215
# -- David Allouche 2007-12-28.
216
entry = inv.add_path(path, kind, file_id=path.encode('utf-8'))
217
entry.text_sha1 = text_sha1
218
entry.executable = executable
281
222
class GitRevisionTree(revisiontree.RevisionTree):
283
224
def __init__(self, repository, revision_id):
225
if revision_id is None:
226
revision_id = revision.NULL_REVISION
227
self._inventory = repository.get_inventory(revision_id)
284
228
self._repository = repository
285
self.revision_id = revision_id
286
git_id = ids.convert_revision_id_bzr_to_git(revision_id)
287
self.tree = repository._git.commit(git_id).tree
288
self._inventory = inventory.Inventory(revision_id=revision_id)
289
self._inventory.root.revision = revision_id
290
self._build_inventory(self.tree, self._inventory.root, "")
229
self._revision_id = revision_id
292
231
def get_file_lines(self, file_id):
293
entry = self._inventory[file_id]
294
if entry.kind == 'directory': return []
295
git_id = self._inventory.git_ids[file_id]
296
if git_id in self._inventory.git_file_data:
297
return self._inventory.git_file_data[git_id]
298
return self._repository._get_blob(git_id)
300
def _build_inventory(self, tree, ie, path):
301
assert isinstance(path, str)
302
for b in tree.contents:
303
basename = b.name.decode("utf-8")
307
child_path = urlutils.join(path, b.name)
308
file_id = escape_file_id(child_path.encode('utf-8'))
310
child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
311
elif b.mode[0] == '1':
313
child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
314
child_ie.text_sha1 = osutils.sha_string(b.data)
315
elif b.mode[1] == '2':
316
child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
317
child_ie.text_sha1 = osutils.sha_string("")
319
raise AssertionError(
320
"Unknown file kind, perms=%r." % (b.mode,))
321
child_ie.text_size = b.size
323
raise AssertionError(
324
"Unknown blob kind, perms=%r." % (b.mode,))
325
child_ie.executable = bool(int(b.mode[3:], 8) & 0111)
326
child_ie.revision = self.revision_id
327
assert not basename in ie.children
328
ie.children[basename] = child_ie
330
self._build_inventory(b, child_ie, child_path)
333
class GitFormat(object):
335
supports_tree_reference = False
337
def get_format_description(self):
338
return "Git Repository"
232
obj_id = self._inventory[file_id].text_sha1
233
return self._repository._git.cat_file('blob', obj_id)