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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 bzrlib import (
errors,
inventory,
osutils,
urlutils,
)
class GitInventoryEntry(inventory.InventoryEntry):
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.mapping.generate_file_id(path.encode('utf-8'))
@property
def object(self):
if self._object is None:
self._object = self._inventory.store[self.hexsha]
return self._object
class GitInventoryFile(GitInventoryEntry):
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_string(self.object.data)
@property
def text_size(self):
return len(self.object.data)
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):
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.symlink_target = self.symlink_target
other.revision = self.revision
return other
class GitInventoryDirectory(GitInventoryEntry):
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'
def kind_character(self):
"""See InventoryEntry.kind_character."""
return '/'
@property
def children(self):
ret = {}
for mode, name, hexsha in self.object.entries():
basename = name.decode("utf-8")
child_path = osutils.pathjoin(self.path, basename)
entry_kind = (mode & 0700000) / 0100000
fs_mode = mode & 0777
executable = bool(fs_mode & 0111)
if entry_kind == 0:
kind_class = GitInventoryDirectory
elif entry_kind == 1:
file_kind = (mode & 070000) / 010000
if file_kind == 0:
kind_class = GitInventoryFile
elif file_kind == 2:
kind_class = GitInventoryLink
else:
raise AssertionError(
"Unknown file kind, perms=%o." % (mode,))
else:
raise AssertionError(
"Unknown blob kind, perms=%r." % (mode,))
ret[basename] = kind_class(self._inventory, self.file_id, hexsha, child_path, basename, executable)
return ret
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 __init__(self, tree_id, mapping, store, revision_id):
super(GitInventory, self).__init__(revision_id=revision_id)
self.store = store
self.mapping = mapping
self.root = GitInventoryDirectory(self, None, tree_id, "", "", False)
def _get_ie(self, path):
parts = path.split("/")
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.mapping.parse_file_id(file_id)
try:
ie = self._get_ie(path)
assert ie.path == 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.mapping.parse_file_id(file_id)
try:
return self._get_ie(path)
except KeyError:
raise errors.NoSuchId(None, file_id)
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