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"""
28
from bzrlib.plugins.git import (
34
class GitRepository(repository.Repository):
35
"""An adapter to git repositories for bzr."""
37
def __init__(self, gitdir, lockfiles):
39
self.control_files = lockfiles
40
gitdirectory = gitdir.transport.local_abspath('.')
41
self._git = model.GitModel(gitdirectory)
42
self._revision_cache = {}
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)
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)
81
def get_revision(self, revision_id):
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)
89
def has_revision(self, revision_id):
91
self.get_revision(revision_id)
92
except NoSuchRevision:
97
def get_revisions(self, revisions):
98
return [self.get_revision(r) for r in revisions]
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.
112
:return: a `bzrlib.revision.Revision` object.
117
committer_was_set = False
118
revision_id = ids.convert_revision_id_git_to_bzr(raw[0][:-1])
119
rev = revision.Revision(revision_id)
120
rev.inventory_sha1 = ""
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))
173
def revision_trees(self, revids):
175
yield self.revision_tree(revid)
177
def revision_tree(self, revision_id):
178
return GitRevisionTree(self, revision_id)
180
def get_inventory(self, revision_id):
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':
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
222
class GitRevisionTree(revisiontree.RevisionTree):
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)
228
self._repository = repository
229
self._revision_id = revision_id
231
def get_file_lines(self, file_id):
232
obj_id = self._inventory[file_id].text_sha1
233
return self._repository._git.cat_file('blob', obj_id)
added
removed
git_repository.py
