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- Committer: Jelmer Vernooij
- Date: 2009-02-08 15:55:41 UTC
- mto: (0.312.1 master) (6883.23.1 bundle-git)
- mto: This revision was merged to the branch mainline in revision 6960.
- Revision ID: jelmer@samba.org-20090208155541-nz99rcyajxi5fp8g
Add FOSDEM roundtripping notes.
- files added:
- foreign
- files removed:
- HACKING
- files renamed:
- tests/test_mapping.py => tests/test_ids.py
- files modified:
- Makefile
added
removed
inventory.py
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# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
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#
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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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#
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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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#
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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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"""Git inventory."""
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from dulwich.objects import (
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Blob,
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Tree,
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)
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from bzrlib import (
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errors,
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inventory,
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osutils,
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ui,
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)
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from bzrlib.plugins.git.mapping import (
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mode_kind,
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mode_is_executable,
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)
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class GitInventoryEntry(inventory.InventoryEntry):
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_git_class = None
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def __init__(self, inv, parent_id, hexsha, path, name, executable):
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self.name = name
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self.parent_id = parent_id
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self._inventory = inv
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self._object = None
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self.hexsha = hexsha
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self.path = path
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self.revision = self._inventory.revision_id
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self.executable = executable
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self.file_id = self._inventory.fileid_map.lookup_file_id(
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path.encode('utf-8'))
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@property
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def object(self):
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if self._object is None:
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self._object = self._inventory.store[self.hexsha]
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assert isinstance(self._object, self._git_class), \
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"Expected instance of %r, got %r" % \
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(self._git_class, self._object)
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return self._object
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class GitInventoryFile(GitInventoryEntry):
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_git_class = Blob
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def __init__(self, inv, parent_id, hexsha, path, basename, executable):
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super(GitInventoryFile, self).__init__(inv, parent_id, hexsha, path,
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basename, executable)
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self.kind = 'file'
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self.text_id = None
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self.symlink_target = None
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@property
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def text_sha1(self):
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return osutils.sha_strings(self.object.chunked)
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@property
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def text_size(self):
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return len(self.object.data)
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def __repr__(self):
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return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s, revision=%s)"
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% (self.__class__.__name__,
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self.file_id,
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self.name,
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self.parent_id,
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self.text_sha1,
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self.text_size,
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self.revision))
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def kind_character(self):
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"""See InventoryEntry.kind_character."""
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return ''
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def copy(self):
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other = inventory.InventoryFile(self.file_id, self.name,
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self.parent_id)
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other.executable = self.executable
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other.text_id = self.text_id
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other.text_sha1 = self.text_sha1
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other.text_size = self.text_size
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other.revision = self.revision
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return other
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class GitInventoryLink(GitInventoryEntry):
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_git_class = Blob
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def __init__(self, inv, parent_id, hexsha, path, basename, executable):
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super(GitInventoryLink, self).__init__(inv, parent_id, hexsha, path, basename, executable)
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self.text_sha1 = None
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self.text_size = None
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self.kind = 'symlink'
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@property
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def symlink_target(self):
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return self.object.data
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def kind_character(self):
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"""See InventoryEntry.kind_character."""
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return ''
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def copy(self):
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other = inventory.InventoryLink(self.file_id, self.name, self.parent_id)
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other.executable = self.executable
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other.symlink_target = self.symlink_target
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other.revision = self.revision
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return other
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class GitInventoryTreeReference(GitInventoryEntry):
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_git_class = None
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def __init__(self, inv, parent_id, hexsha, path, basename, executable):
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super(GitInventoryTreeReference, self).__init__(inv, parent_id, hexsha, path, basename, executable)
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self.hexsha = hexsha
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self.reference_revision = inv.mapping.revision_id_foreign_to_bzr(hexsha)
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self.text_sha1 = None
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self.text_size = None
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self.symlink_target = None
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self.kind = 'tree-reference'
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self._children = None
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def kind_character(self):
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"""See InventoryEntry.kind_character."""
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return '/'
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class GitInventoryDirectory(GitInventoryEntry):
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_git_class = Tree
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def __init__(self, inv, parent_id, hexsha, path, basename, executable):
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super(GitInventoryDirectory, self).__init__(inv, parent_id, hexsha, path, basename, executable)
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self.text_sha1 = None
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self.text_size = None
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self.symlink_target = None
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self.kind = 'directory'
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self._children = None
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def kind_character(self):
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"""See InventoryEntry.kind_character."""
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return '/'
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@property
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def children(self):
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if self._children is None:
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self._retrieve_children()
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return self._children
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def _retrieve_children(self):
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self._children = {}
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for mode, name, hexsha in self.object.entries():
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basename = name.decode("utf-8")
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child_path = osutils.pathjoin(self.path, basename)
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if self._inventory.mapping.is_control_file(child_path):
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continue
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executable = mode_is_executable(mode)
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kind_class = {'directory': GitInventoryDirectory,
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'file': GitInventoryFile,
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'symlink': GitInventoryLink,
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'tree-reference': GitInventoryTreeReference}[mode_kind(mode)]
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self._children[basename] = kind_class(self._inventory,
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self.file_id, hexsha, child_path, basename, executable)
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def copy(self):
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other = inventory.InventoryDirectory(self.file_id, self.name,
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self.parent_id)
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other.revision = self.revision
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# note that children are *not* copied; they're pulled across when
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# others are added
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return other
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class GitInventory(inventory.Inventory):
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def __init__(self, tree_id, mapping, fileid_map, store, revision_id):
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super(GitInventory, self).__init__(revision_id=revision_id)
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self.store = store
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self.fileid_map = fileid_map
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self.mapping = mapping
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self.root = GitInventoryDirectory(self, None, tree_id, u"", u"", False)
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def _get_ie(self, path):
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if path == "":
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return self.root
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parts = path.split("/")
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ie = self.root
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for name in parts:
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ie = ie.children[name]
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return ie
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def has_filename(self, path):
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try:
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self._get_ie(path)
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return True
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except KeyError:
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return False
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def has_id(self, file_id):
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try:
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self.id2path(file_id)
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return True
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except errors.NoSuchId:
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return False
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def id2path(self, file_id):
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path = self.fileid_map.lookup_path(file_id)
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try:
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ie = self._get_ie(path)
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assert ie.path == path
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except KeyError:
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raise errors.NoSuchId(None, file_id)
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def path2id(self, path):
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try:
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return self._get_ie(path).file_id
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except KeyError:
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return None
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def __getitem__(self, file_id):
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if file_id == inventory.ROOT_ID:
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return self.root
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path = self.fileid_map.lookup_path(file_id)
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try:
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return self._get_ie(path)
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except KeyError:
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raise errors.NoSuchId(None, file_id)
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class GitIndexInventory(inventory.Inventory):
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"""Inventory that retrieves its contents from an index file."""
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def __init__(self, basis_inventory, fileid_map, index, store):
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super(GitIndexInventory, self).__init__(revision_id=None, root_id=basis_inventory.root.file_id)
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self.basis_inv = basis_inventory
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self.fileid_map = fileid_map
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self.index = index
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self._contents_read = False
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self.store = store
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self.root = self.add_path("", 'directory',
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self.fileid_map.lookup_file_id(""), None)
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def iter_entries_by_dir(self, specific_file_ids=None, yield_parents=False):
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self._read_contents()
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return super(GitIndexInventory, self).iter_entries_by_dir(
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specific_file_ids=specific_file_ids, yield_parents=yield_parents)
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def has_id(self, file_id):
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if type(file_id) != str:
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raise AssertionError
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try:
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self.id2path(file_id)
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return True
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except errors.NoSuchId:
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return False
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def has_filename(self, path):
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if path in self.index:
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return True
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self._read_contents()
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return super(GitIndexInventory, self).has_filename(path)
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def id2path(self, file_id):
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if type(file_id) != str:
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raise AssertionError
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path = self.fileid_map.lookup_path(file_id)
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if path in self.index:
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return path
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self._read_contents()
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return super(GitIndexInventory, self).id2path(file_id)
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def path2id(self, path):
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if path in self.index:
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return self.fileid_map.lookup_file_id(path)
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self._read_contents()
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return super(GitIndexInventory, self).path2id(path)
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def __getitem__(self, file_id):
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self._read_contents()
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return super(GitIndexInventory, self).__getitem__(file_id)
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def _read_contents(self):
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if self._contents_read:
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return
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self._contents_read = True
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pb = ui.ui_factory.nested_progress_bar()
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try:
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for i, (path, value) in enumerate(self.index.iteritems()):
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pb.update("creating working inventory from index",
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i, len(self.index))
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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, dev, ino, mode, uid, gid, size, sha, flags) = value
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try:
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old_ie = self.basis_inv._get_ie(path)
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except KeyError:
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old_ie = None
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if old_ie is None:
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file_id = self.fileid_map.lookup_file_id(path)
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else:
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file_id = old_ie.file_id
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if type(file_id) != str:
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raise AssertionError
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kind = mode_kind(mode)
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if old_ie is not None and old_ie.hexsha == sha:
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# Hasn't changed since basis inv
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self.add_parents(path)
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self.add(old_ie)
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else:
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ie = self.add_path(path, kind, file_id,
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self.add_parents(path))
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data = self.store[sha].data
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if kind == "symlink":
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ie.symlink_target = data
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else:
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ie.text_sha1 = osutils.sha_string(data)
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ie.text_size = len(data)
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ie.revision = None
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finally:
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pb.finished()
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def add_parents(self, path):
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dirname, _ = osutils.split(path)
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file_id = super(GitIndexInventory, self).path2id(dirname)
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if file_id is None:
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if dirname == "":
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parent_fid = None
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else:
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parent_fid = self.add_parents(dirname)
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ie = self.add_path(dirname, 'directory',
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self.fileid_map.lookup_file_id(dirname), parent_fid)
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if ie.file_id in self.basis_inv:
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ie.revision = self.basis_inv[ie.file_id].revision
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file_id = ie.file_id
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if type(file_id) != str:
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raise AssertionError
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return file_id
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