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.transport import get_transport
39
from bzrlib.plugins.git.foreign import (
43
from bzrlib.plugins.git.mapping import default_mapping
45
from bzrlib.plugins.git import git
48
class GitTags(object):
50
def __init__(self, tags):
54
return iter(self._tags)
57
class GitRepository(ForeignRepository):
58
"""An adapter to git repositories for bzr."""
62
def __init__(self, gitdir, lockfiles):
63
self.base = gitdir.root_transport.base
65
self.control_files = lockfiles
66
self._git = gitdir._git
68
self.signatures = versionedfiles.VirtualSignatureTexts(self)
69
self.revisions = versionedfiles.VirtualRevisionTexts(self)
70
self._format = GitFormat()
71
self._fallback_repositories = []
72
self.tags = GitTags(self._git.get_tags())
74
def _all_revision_ids(self):
75
if self._git.heads == []:
82
cms = self._git.commits("--all", max_count=max_count, skip=skip)
84
ret.update([self.get_mapping().revision_id_foreign_to_bzr(cm.id) for cm in cms])
90
def supports_rich_root(self):
93
#def get_revision_delta(self, revision_id):
94
# parent_revid = self.get_revision(revision_id).parent_ids[0]
95
# diff = self._git.diff(ids.convert_revision_id_bzr_to_git(parent_revid),
96
# ids.convert_revision_id_bzr_to_git(revision_id))
98
def get_ancestry(self, revision_id):
99
revision_id = revision.ensure_null(revision_id)
101
if revision_id != revision.NULL_REVISION:
106
cms = self._git.commits(self.lookup_git_revid(revision_id, self.get_mapping()), max_count=max_count, skip=skip)
108
ret += [self.get_mapping().revision_id_foreign_to_bzr(cm.id) for cm in cms]
111
def get_signature_text(self, revision_id):
112
raise errors.NoSuchRevision(self, revision_id)
114
def lookup_revision_id(self, revid):
115
"""Lookup a revision id.
117
:param revid: Bazaar revision id.
118
:return: Tuple with git revisionid and mapping.
120
# Yes, this doesn't really work, but good enough as a stub
121
return osutils.sha(rev_id).hexdigest(), self.get_mapping()
123
def has_signature_for_revision_id(self, revision_id):
126
def get_mapping(self):
127
return default_mapping
129
def get_parent_map(self, revision_ids):
131
for revid in revision_ids:
132
if revid == revision.NULL_REVISION:
135
git_commit_id = self.lookup_git_revid(revid, self.get_mapping())
136
commit = self._git.commit(git_commit_id)
137
ret[revid] = tuple([self.get_mapping().revision_id_foreign_to_bzr(p.id) for p in commit.parents])
140
def lookup_git_revid(self, bzr_revid, mapping):
142
return mapping.revision_id_bzr_to_foreign(bzr_revid)
143
except errors.InvalidRevisionId:
144
raise errors.NoSuchRevision(bzr_revid, self)
146
def get_revision(self, revision_id):
147
git_commit_id = self.lookup_git_revid(revision_id, self.get_mapping())
148
commit = self._git.commit(git_commit_id)
149
# print "fetched revision:", git_commit_id
150
revision = self._parse_rev(commit, self.get_mapping())
153
def has_revision(self, revision_id):
155
self.get_revision(revision_id)
156
except NoSuchRevision:
161
def get_revisions(self, revisions):
162
return [self.get_revision(r) for r in revisions]
165
def _parse_rev(klass, commit, mapping):
166
"""Convert a git commit to a bzr revision.
168
:return: a `bzrlib.revision.Revision` object.
171
raise AssertionError("Commit object can't be None")
172
rev = ForeignRevision(commit.id, mapping, mapping.revision_id_foreign_to_bzr(commit.id))
173
rev.parent_ids = tuple([mapping.revision_id_foreign_to_bzr(p.id) for p in commit.parents])
174
rev.message = commit.message.decode("utf-8", "replace")
175
rev.committer = str(commit.committer).decode("utf-8", "replace")
176
rev.properties['author'] = str(commit.author).decode("utf-8", "replace")
177
rev.timestamp = time.mktime(commit.committed_date)
181
def revision_trees(self, revids):
183
yield self.revision_tree(revid)
185
def revision_tree(self, revision_id):
186
revision_id = revision.ensure_null(revision_id)
188
if revision_id == revision.NULL_REVISION:
189
inv = inventory.Inventory(root_id=None)
190
inv.revision_id = revision_id
191
return revisiontree.RevisionTree(self, inv, revision_id)
193
return GitRevisionTree(self, revision_id)
195
def get_inventory(self, revision_id):
196
assert revision_id != None
197
return self.revision_tree(revision_id).inventory
199
def set_make_working_trees(self, trees):
203
def escape_file_id(file_id):
204
return file_id.replace('_', '__').replace(' ', '_s')
207
def unescape_file_id(file_id):
208
return file_id.replace("_s", " ").replace("__", "_")
211
class GitRevisionTree(revisiontree.RevisionTree):
213
def __init__(self, repository, revision_id):
214
self._repository = repository
215
self.revision_id = revision_id
216
git_id = repository.lookup_git_revid(revision_id, repository.get_mapping())
217
self.tree = repository._git.commit(git_id).tree
218
self._inventory = inventory.Inventory(revision_id=revision_id)
219
self._inventory.root.revision = revision_id
220
self._build_inventory(self.tree, self._inventory.root, "")
222
def get_revision_id(self):
223
return self.revision_id
225
def get_file_text(self, file_id):
226
entry = self._inventory[file_id]
227
if entry.kind == 'directory': return ""
228
return self._repository._git.blob(entry.text_id).data
230
def _build_inventory(self, tree, ie, path):
231
assert isinstance(path, str)
232
for name, mode, hexsha in tree.entries():
233
basename = name.decode("utf-8")
237
child_path = urlutils.join(path, name)
238
file_id = escape_file_id(child_path.encode('utf-8'))
240
child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
243
child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
244
child_ie.text_sha1 = osutils.sha_string(b.data)
246
child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
247
child_ie.text_sha1 = osutils.sha_string("")
249
raise AssertionError(
250
"Unknown file kind, perms=%r." % (mode,))
251
child_ie.text_id = b.id
252
child_ie.text_size = b.size
254
raise AssertionError(
255
"Unknown blob kind, perms=%r." % (mode,))
256
child_ie.executable = bool(int(mode[3:], 8) & 0111)
257
child_ie.revision = self.revision_id
258
self._inventory.add(child_ie)
260
self._build_inventory(b, child_ie, child_path)
263
class GitFormat(object):
265
supports_tree_reference = False
267
def get_format_description(self):
268
return "Git Repository"