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# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
#
# 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
"""Git inventory."""
from dulwich.objects import (
Blob,
Tree,
)
from bzrlib import (
errors,
inventory,
osutils,
ui,
)
from bzrlib.plugins.git.mapping import (
mode_kind,
mode_is_executable,
)
class GitInventoryEntry(inventory.InventoryEntry):
_git_class = None
def __init__(self, inv, parent_id, hexsha, path, name, executable):
self.name = name
self.parent_id = parent_id
self._inventory = inv
self._object = None
self.hexsha = hexsha
self.path = path
self.revision = self._inventory.revision_id
self.executable = executable
self.file_id = self._inventory.fileid_map.lookup_file_id(
path.encode('utf-8'))
@property
def object(self):
if self._object is None:
self._object = self._inventory.store[self.hexsha]
assert isinstance(self._object, self._git_class), \
"Expected instance of %r, got %r" % \
(self._git_class, self._object)
return self._object
class GitInventoryFile(GitInventoryEntry):
_git_class = Blob
def __init__(self, inv, parent_id, hexsha, path, basename, executable):
super(GitInventoryFile, self).__init__(inv, parent_id, hexsha, path,
basename, executable)
self.kind = 'file'
self.text_id = None
self.symlink_target = None
@property
def text_sha1(self):
return osutils.sha_strings(self.object.chunked)
@property
def text_size(self):
return len(self.object.data)
def __repr__(self):
return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s, revision=%s)"
% (self.__class__.__name__,
self.file_id,
self.name,
self.parent_id,
self.text_sha1,
self.text_size,
self.revision))
def kind_character(self):
"""See InventoryEntry.kind_character."""
return ''
def copy(self):
other = inventory.InventoryFile(self.file_id, self.name,
self.parent_id)
other.executable = self.executable
other.text_id = self.text_id
other.text_sha1 = self.text_sha1
other.text_size = self.text_size
other.revision = self.revision
return other
class GitInventoryLink(GitInventoryEntry):
_git_class = Blob
def __init__(self, inv, parent_id, hexsha, path, basename, executable):
super(GitInventoryLink, self).__init__(inv, parent_id, hexsha, path, basename, executable)
self.text_sha1 = None
self.text_size = None
self.kind = 'symlink'
@property
def symlink_target(self):
return self.object.data
def kind_character(self):
"""See InventoryEntry.kind_character."""
return ''
def copy(self):
other = inventory.InventoryLink(self.file_id, self.name, self.parent_id)
other.executable = self.executable
other.symlink_target = self.symlink_target
other.revision = self.revision
return other
class GitInventoryTreeReference(GitInventoryEntry):
_git_class = None
def __init__(self, inv, parent_id, hexsha, path, basename, executable):
super(GitInventoryTreeReference, self).__init__(inv, parent_id, hexsha, path, basename, executable)
self.hexsha = hexsha
self.reference_revision = inv.mapping.revision_id_foreign_to_bzr(hexsha)
self.text_sha1 = None
self.text_size = None
self.symlink_target = None
self.kind = 'tree-reference'
self._children = None
def kind_character(self):
"""See InventoryEntry.kind_character."""
return '/'
class GitInventoryDirectory(GitInventoryEntry):
_git_class = Tree
def __init__(self, inv, parent_id, hexsha, path, basename, executable):
super(GitInventoryDirectory, self).__init__(inv, parent_id, hexsha, path, basename, executable)
self.text_sha1 = None
self.text_size = None
self.symlink_target = None
self.kind = 'directory'
self._children = None
def kind_character(self):
"""See InventoryEntry.kind_character."""
return '/'
@property
def children(self):
if self._children is None:
self._retrieve_children()
return self._children
def _retrieve_children(self):
self._children = {}
for name, mode, hexsha in self.object.iteritems():
basename = name.decode("utf-8")
child_path = osutils.pathjoin(self.path, basename)
if self._inventory.mapping.is_control_file(child_path):
continue
executable = mode_is_executable(mode)
kind_class = {'directory': GitInventoryDirectory,
'file': GitInventoryFile,
'symlink': GitInventoryLink,
'tree-reference': GitInventoryTreeReference}[mode_kind(mode)]
self._children[basename] = kind_class(self._inventory,
self.file_id, hexsha, child_path, basename, executable)
def copy(self):
other = inventory.InventoryDirectory(self.file_id, self.name,
self.parent_id)
other.revision = self.revision
# note that children are *not* copied; they're pulled across when
# others are added
return other
class GitInventory(inventory.Inventory):
def __repr__(self):
return "<%s for %r in %r>" % (self.__class__.__name__,
self.root.hexsha, self.store)
def __init__(self, tree_id, mapping, fileid_map, store, revision_id):
super(GitInventory, self).__init__(revision_id=revision_id)
self.store = store
self.fileid_map = fileid_map
self.mapping = mapping
self.root = GitInventoryDirectory(self, None, tree_id, u"", u"", False)
def _get_ie(self, path):
if path == "" or path == []:
return self.root
if isinstance(path, basestring):
parts = path.split("/")
else:
parts = path
ie = self.root
for name in parts:
ie = ie.children[name]
return ie
def has_filename(self, path):
try:
self._get_ie(path)
return True
except KeyError:
return False
def has_id(self, file_id):
try:
self.id2path(file_id)
return True
except errors.NoSuchId:
return False
def id2path(self, file_id):
path = self.fileid_map.lookup_path(file_id)
try:
ie = self._get_ie(path)
except KeyError:
raise errors.NoSuchId(None, file_id)
def path2id(self, path):
try:
return self._get_ie(path).file_id
except KeyError:
return None
def __getitem__(self, file_id):
if file_id == inventory.ROOT_ID:
return self.root
path = self.fileid_map.lookup_path(file_id)
try:
return self._get_ie(path)
except KeyError:
raise errors.NoSuchId(None, file_id)
class GitIndexInventory(inventory.Inventory):
"""Inventory that retrieves its contents from an index file."""
def __repr__(self):
return "<%s for %r>" % (self.__class__.__name__, self.index)
def __init__(self, basis_inventory, fileid_map, index, store):
if basis_inventory is None:
root_id = None
else:
root_id = basis_inventory.root.file_id
super(GitIndexInventory, self).__init__(revision_id=None, root_id=root_id)
self.basis_inv = basis_inventory
self.fileid_map = fileid_map
self.index = index
self._contents_read = False
self.store = store
self.root = self.add_path("", 'directory',
self.fileid_map.lookup_file_id(""), None)
def iter_entries_by_dir(self, specific_file_ids=None, yield_parents=False):
self._read_contents()
return super(GitIndexInventory, self).iter_entries_by_dir(
specific_file_ids=specific_file_ids, yield_parents=yield_parents)
def has_id(self, file_id):
if type(file_id) != str:
raise AssertionError
try:
self.id2path(file_id)
return True
except errors.NoSuchId:
return False
def has_filename(self, path):
if path in self.index:
return True
self._read_contents()
return super(GitIndexInventory, self).has_filename(path)
def id2path(self, file_id):
if type(file_id) != str:
raise AssertionError
path = self.fileid_map.lookup_path(file_id)
if path in self.index:
return path
self._read_contents()
return super(GitIndexInventory, self).id2path(file_id)
def path2id(self, path):
if type(path) in (list, tuple):
path = "/".join(path)
encoded_path = path.encode("utf-8")
if encoded_path in self.index:
file_id = self.fileid_map.lookup_file_id(encoded_path)
else:
self._read_contents()
file_id = super(GitIndexInventory, self).path2id(path)
if file_id is not None and type(file_id) is not str:
raise AssertionError
return file_id
def __getitem__(self, file_id):
self._read_contents()
return super(GitIndexInventory, self).__getitem__(file_id)
def _read_contents(self):
if self._contents_read:
return
self._contents_read = True
pb = ui.ui_factory.nested_progress_bar()
try:
for i, (path, value) in enumerate(self.index.iteritems()):
pb.update("creating working inventory from index",
i, len(self.index))
assert isinstance(path, str)
assert isinstance(value, tuple) and len(value) == 10
(ctime, mtime, dev, ino, mode, uid, gid, size, sha, flags) = value
if self.basis_inv is not None:
try:
old_ie = self.basis_inv._get_ie(path)
except KeyError:
old_ie = None
else:
old_ie = None
if old_ie is None:
file_id = self.fileid_map.lookup_file_id(path)
else:
file_id = old_ie.file_id
if type(file_id) != str:
raise AssertionError
kind = mode_kind(mode)
if old_ie is not None and old_ie.hexsha == sha:
# Hasn't changed since basis inv
self.add_parents(path)
self.add(old_ie)
else:
ie = self.add_path(path.decode("utf-8"), kind, file_id,
self.add_parents(path))
data = self.store[sha].data
if kind == "symlink":
ie.symlink_target = data
else:
ie.text_sha1 = osutils.sha_string(data)
ie.text_size = len(data)
ie.revision = None
finally:
pb.finished()
def add_parents(self, path):
assert isinstance(path, str)
dirname, _ = osutils.split(path)
file_id = super(GitIndexInventory, self).path2id(dirname)
if file_id is None:
if dirname == "":
parent_fid = None
else:
parent_fid = self.add_parents(dirname)
ie = self.add_path(dirname.decode("utf-8"), 'directory',
self.fileid_map.lookup_file_id(dirname), parent_fid)
if self.basis_inv is not None and ie.file_id in self.basis_inv:
ie.revision = self.basis_inv[ie.file_id].revision
file_id = ie.file_id
if type(file_id) != str:
raise AssertionError
return file_id
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