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# Copyright (C) 2008 Jelmer Vernooij <jelmer@samba.org>
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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 index and a Bazaar Working Tree"""
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from cStringIO import (
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from dulwich.index import (
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from dulwich.objects import (
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from bzrlib.decorators import (
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def inventory_from_index(basis_inventory, mapping, index):
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inv = inventory.Inventory(root_id=None)
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def add_parents(path):
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dirname, _ = osutils.split(path)
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file_id = inv.path2id(dirname)
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parent_fid = add_parents(dirname)
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ie = inv.add_path(dirname, 'directory', mapping.generate_file_id(dirname), parent_fid)
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if ie.file_id in basis_inventory:
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ie.revision = basis_inventory[ie.file_id].revision
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for path, value in index.iteritems():
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assert isinstance(path, str)
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assert isinstance(value, tuple) and len(value) == 10
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(ctime, mtime, ino, dev, mode, uid, gid, size, sha, flags) = value
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old_file_id = basis_inventory.path2id(path)
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if old_file_id is None:
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file_id = mapping.generate_file_id(path)
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if stat.S_ISLNK(mode):
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assert stat.S_ISREG(mode)
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ie = inv.add_path(path, kind, file_id, add_parents(path))
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if old_file_id is not None:
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ie.revision = basis_inventory[old_file_id].revision
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class GitWorkingTree(workingtree.WorkingTree):
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"""A Git working tree."""
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def __init__(self, bzrdir, repo, branch):
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self.basedir = bzrdir.root_transport.local_abspath('.')
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self.repository = repo
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self.mapping = self.repository.get_mapping()
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self._transport = bzrdir.transport
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self.controldir = urlutils.join(self.repository._git._controldir, 'bzr')
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os.makedirs(self.controldir)
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os.makedirs(os.path.join(self.controldir, 'lock'))
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self._control_files = lockable_files.LockableFiles(
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transport.get_transport(self.controldir), 'lock', lockdir.LockDir)
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self._format = GitWorkingTreeFormat()
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self.index_path = os.path.join(self.repository._git.controldir(),
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self.index = Index(self.index_path)
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self.views = self._make_views()
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self._detect_case_handling()
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# non-implementation specific cleanup
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# reverse order of locking.
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return self._control_files.unlock()
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def is_control_filename(self, path):
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return os.path.basename(path) == ".git"
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def _rewrite_index(self):
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for path, entry in self._inventory.iter_entries():
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if entry.kind == "directory":
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# Git indexes don't contain directories
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if entry.kind == "file":
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file, stat_val = self.get_file_with_stat(entry.file_id, path)
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except (errors.NoSuchFile, IOError):
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# TODO: Rather than come up with something here, use the old index
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stat_val = (0, 0, 0, 0, stat.S_IFREG | 0644, 0, 0, 0, 0, 0)
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blob._text = file.read()
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elif entry.kind == "symlink":
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stat_val = os.stat(self.abspath(path))
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blob._text = entry.symlink_target
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# Add object to the repository if it didn't exist yet
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if not blob.id in self.repository._git.object_store:
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self.repository._git.object_store.add_object(blob)
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# Add an entry to the index or update the existing entry
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(mode, ino, dev, links, uid, gid, size, atime, mtime, ctime) = stat_val
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self.index[path.encode("utf-8")] = (ctime, mtime, ino, dev, mode, uid, gid, size, blob.id, flags)
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# TODO: Maybe this should only write on dirty ?
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if self._control_files._lock_mode != 'w':
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raise errors.NotWriteLocked(self)
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self._rewrite_index()
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self._inventory_is_modified = False
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def _reset_data(self):
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self._inventory_is_modified = False
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basis_inv = self.repository.get_inventory(self.mapping.revision_id_foreign_to_bzr(self.repository._git.head()))
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result = inventory_from_index(basis_inv, self.mapping, self.index)
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self._set_inventory(result, dirty=False)
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def get_file_sha1(self, file_id, path=None, stat_value=None):
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path = self._inventory.id2path(file_id)
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return osutils.sha_file_by_name(self.abspath(path).encode(osutils._fs_enc))
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class GitWorkingTreeFormat(workingtree.WorkingTreeFormat):
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def get_format_description(self):
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return "Git Working Tree"