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# Copyright (C) 2007 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""An adapter between a Git Repository and a Bazaar Branch"""
from bzrlib import (
deprecated_graph,
repository,
urlutils,
)
from bzrlib.plugins.git.gitlib import (
ids,
model,
)
class GitRepository(repository.Repository):
"""An adapter to git repositories for bzr."""
def __init__(self, gitdir, lockfiles):
self.bzrdir = gitdir
self.control_files = lockfiles
gitdirectory = gitdir.transport.local_abspath('.')
self._git = model.GitModel(gitdirectory)
self._revision_cache = {}
def _ancestor_revisions(self, revision_ids):
if revision_ids is not None:
git_revisions = [gitrevid_from_bzr(r) for r in revision_ids]
else:
git_revisions = None
for lines in self._git.ancestor_lines(git_revisions):
yield self.parse_rev(lines)
def is_shared(self):
return True
def get_revision_graph(self, revision_id=None):
result = {}
if revision_id is not None:
param = [ids.convert_revision_id_bzr_to_git(revision_id)]
else:
param = None
for node, parents in self._git.ancestry(param).iteritems():
bzr_node = ids.convert_revision_id_git_to_bzr(node)
bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
for n in parents]
result[bzr_node] = bzr_parents
return result
def get_revision_graph_with_ghosts(self, revision_ids=None):
graph = deprecated_graph.Graph()
if revision_ids is not None:
revision_ids = [ids.convert_revision_id_bzr_to_git(r)
for r in revision_ids]
for node, parents in self._git.ancestry(revision_ids).iteritems():
bzr_node = ids.convert_revision_id_git_to_bzr(node)
bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
for n in parents]
graph.add_node(bzr_node, bzr_parents)
return graph
def get_revision(self, revision_id):
if revision_id in self._revision_cache:
return self._revision_cache[revision_id]
raw = self._git.rev_list([gitrevid_from_bzr(revision_id)], max_count=1,
header=True)
return self.parse_rev(raw)
def has_revision(self, revision_id):
try:
self.get_revision(revision_id)
except NoSuchRevision:
return False
else:
return True
def get_revisions(self, revisions):
return [self.get_revision(r) for r in revisions]
def parse_rev(self, raw):
# first field is the rev itself.
# then its 'field value'
# until the EOF??
parents = []
log = []
in_log = False
committer = None
revision_id = bzrrevid_from_git(raw[0][:-1])
for field in raw[1:]:
#if field.startswith('author '):
# committer = field[7:]
if field.startswith('parent '):
parents.append(bzrrevid_from_git(field.split()[1]))
elif field.startswith('committer '):
commit_fields = field.split()
if committer is None:
committer = ' '.join(commit_fields[1:-3])
timestamp = commit_fields[-2]
timezone = commit_fields[-1]
elif field.startswith('tree '):
tree_id = field.split()[1]
elif in_log:
log.append(field[4:])
elif field == '\n':
in_log = True
log = ''.join(log)
result = Revision(revision_id)
result.parent_ids = parents
result.message = log
result.inventory_sha1 = ""
result.timezone = timezone and int(timezone)
result.timestamp = float(timestamp)
result.committer = committer
result.properties['git-tree-id'] = tree_id
return result
def revision_trees(self, revids):
for revid in revids:
yield self.revision_tree(revid)
def revision_tree(self, revision_id):
return GitRevisionTree(self, revision_id)
def get_inventory(self, revision_id):
revision = self.get_revision(revision_id)
inventory = GitInventory(revision_id)
tree_id = revision.properties['git-tree-id']
type_map = {'blob': 'file', 'tree': 'directory' }
def get_inventory(tree_id, prefix):
for perms, type, obj_id, name in self._git.get_inventory(tree_id):
full_path = prefix + name
if type == 'blob':
text_sha1 = obj_id
else:
text_sha1 = None
executable = (perms[-3] in ('1', '3', '5', '7'))
entry = GitEntry(full_path, type_map[type], revision_id,
text_sha1, executable)
inventory.entries[full_path] = entry
if type == 'tree':
get_inventory(obj_id, full_path+'/')
get_inventory(tree_id, '')
return inventory
class GitRevisionTree(object):
def __init__(self, repository, revision_id):
self.repository = repository
self.revision_id = revision_id
self.inventory = repository.get_inventory(revision_id)
def get_file(self, file_id):
return iterablefile.IterableFile(self.get_file_lines(file_id))
def get_file_lines(self, file_id):
obj_id = self.inventory[file_id].text_sha1
return self.repository._git.cat_file('blob', obj_id)
def is_executable(self, file_id):
return self.inventory[file_id].executable
class GitInventory(object):
def __init__(self, revision_id):
self.entries = {}
self.root = GitEntry('', 'directory', revision_id)
self.entries[''] = self.root
def __getitem__(self, key):
return self.entries[key]
def iter_entries(self):
return iter(sorted(self.entries.items()))
def iter_entries_by_dir(self):
return self.iter_entries()
def __len__(self):
return len(self.entries)
class GitEntry(object):
def __init__(self, path, kind, revision, text_sha1=None, executable=False,
text_size=None):
self.path = path
self.file_id = path
self.kind = kind
self.executable = executable
self.name = osutils.basename(path)
if path == '':
self.parent_id = None
else:
self.parent_id = osutils.dirname(path)
self.revision = revision
self.symlink_target = None
self.text_sha1 = text_sha1
self.text_size = None
def __repr__(self):
return "GitEntry(%r, %r, %r, %r)" % (self.path, self.kind,
self.revision, self.parent_id)
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