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# Copyright (C) 2007 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""An adapter between a Git Repository and a Bazaar Branch"""
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from bzrlib.plugins.git import (
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class GitRepository(repository.Repository):
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"""An adapter to git repositories for bzr."""
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def __init__(self, gitdir, lockfiles):
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self.control_files = lockfiles
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gitdirectory = gitdir.transport.local_abspath('.')
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self._git = model.GitModel(gitdirectory)
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self._revision_cache = {}
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def _ancestor_revisions(self, revision_ids):
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if revision_ids is not None:
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git_revisions = [gitrevid_from_bzr(r) for r in revision_ids]
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for lines in self._git.ancestor_lines(git_revisions):
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yield self._parse_rev(lines)
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def get_revision_graph(self, revision_id=None):
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if revision_id is not None:
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param = [ids.convert_revision_id_bzr_to_git(revision_id)]
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for node, parents in self._git.ancestry(param).iteritems():
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bzr_node = ids.convert_revision_id_git_to_bzr(node)
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bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
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result[bzr_node] = bzr_parents
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def get_revision_graph_with_ghosts(self, revision_ids=None):
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graph = deprecated_graph.Graph()
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if revision_ids is not None:
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revision_ids = [ids.convert_revision_id_bzr_to_git(r)
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for r in revision_ids]
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for node, parents in self._git.ancestry(revision_ids).iteritems():
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bzr_node = ids.convert_revision_id_git_to_bzr(node)
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bzr_parents = [ids.convert_revision_id_git_to_bzr(n)
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graph.add_node(bzr_node, bzr_parents)
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def get_revision(self, revision_id):
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if revision_id in self._revision_cache:
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return self._revision_cache[revision_id]
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raw = self._git.rev_list(
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[ids.convert_revision_id_bzr_to_git(revision_id)],
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max_count=1, header=True)
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return self._parse_rev(raw)
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def has_revision(self, revision_id):
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self.get_revision(revision_id)
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except NoSuchRevision:
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def get_revisions(self, revisions):
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return [self.get_revision(r) for r in revisions]
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def _parse_rev(klass, raw):
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"""Parse a single git revision.
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* The first line is the git commit id.
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* Following lines conform to the 'name value' structure, until the
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* All lines after the first blank line and until the NULL line have 4
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leading spaces and constitute the commit message.
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:param raw: sequence of newline-terminated strings, its last item is a
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single NULL character.
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:return: a `bzrlib.revision.Revision` object.
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committer_was_set = False
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revision_id = ids.convert_revision_id_git_to_bzr(raw[0][:-1])
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rev = revision.Revision(revision_id)
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rev.inventory_sha1 = ""
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assert raw[-1] == '\x00', (
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"Last item of raw was not a single NULL character.")
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for line in raw[1:-1]:
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assert line[:4] == ' ', (
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"Unexpected line format in commit message: %r" % line)
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message_lines.append(line[4:])
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name, value = line[:-1].split(' ', 1)
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rev.parent_ids.append(
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ids.convert_revision_id_git_to_bzr(value))
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author, timestamp, timezone = value.rsplit(' ', 2)
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rev.properties['author'] = author
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rev.properties['git-author-timestamp'] = timestamp
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rev.properties['git-author-timezone'] = timezone
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if not committer_was_set:
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rev.committer = author
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rev.timestamp = float(timestamp)
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rev.timezone = klass._parse_tz(timezone)
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if name == 'committer':
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committer_was_set = True
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committer, timestamp, timezone = value.rsplit(' ', 2)
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rev.committer = committer
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rev.timestamp = float(timestamp)
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rev.timezone = klass._parse_tz(timezone)
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rev.properties['git-tree-id'] = value
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rev.message = ''.join(message_lines)
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def _parse_tz(klass, tz):
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"""Parse a timezone specification in the [+|-]HHMM format.
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:return: the timezone offset in seconds.
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sign = {'+': +1, '-': -1}[tz[0]]
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minutes = int(tz[3:])
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return float(sign * 60 * (60 * hours + minutes))
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def revision_trees(self, revids):
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yield self.revision_tree(revid)
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def revision_tree(self, revision_id):
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return GitRevisionTree(self, revision_id)
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def get_inventory(self, revision_id):
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revision = self.get_revision(revision_id)
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inventory = GitInventory(revision_id)
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tree_id = revision.properties['git-tree-id']
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type_map = {'blob': 'file', 'tree': 'directory' }
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def get_inventory(tree_id, prefix):
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for perms, type, obj_id, name in self._git.get_inventory(tree_id):
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full_path = prefix + name
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executable = (perms[-3] in ('1', '3', '5', '7'))
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entry = GitEntry(full_path, type_map[type], revision_id,
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text_sha1, executable)
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inventory.entries[full_path] = entry
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get_inventory(obj_id, full_path+'/')
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get_inventory(tree_id, '')
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class GitRevisionTree(object):
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def __init__(self, repository, revision_id):
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self.repository = repository
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self.revision_id = revision_id
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self.inventory = repository.get_inventory(revision_id)
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def get_file(self, file_id):
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return iterablefile.IterableFile(self.get_file_lines(file_id))
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def get_file_lines(self, file_id):
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obj_id = self.inventory[file_id].text_sha1
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return self.repository._git.cat_file('blob', obj_id)
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def is_executable(self, file_id):
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return self.inventory[file_id].executable
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class GitInventory(object):
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def __init__(self, revision_id):
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self.root = GitEntry('', 'directory', revision_id)
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self.entries[''] = self.root
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def __getitem__(self, key):
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return self.entries[key]
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def iter_entries(self):
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return iter(sorted(self.entries.items()))
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def iter_entries_by_dir(self):
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return self.iter_entries()
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return len(self.entries)
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class GitEntry(object):
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def __init__(self, path, kind, revision, text_sha1=None, executable=False,
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self.executable = executable
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self.name = osutils.basename(path)
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self.parent_id = None
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self.parent_id = osutils.dirname(path)
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self.revision = revision
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self.symlink_target = None
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self.text_sha1 = text_sha1
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self.text_size = None
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return "GitEntry(%r, %r, %r, %r)" % (self.path, self.kind,
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self.revision, self.parent_id)
added
removed
git_repository.py
