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# Copyright (C) 2018 Jelmer Vernooij <jelmer@jelmer.uk>
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""Annotate."""
from dulwich.object_store import (
tree_lookup_path,
)
from .. import osutils
from ..bzr.versionedfile import UnavailableRepresentation
from ..errors import (
NoSuchRevision,
)
from ..graph import Graph
from ..revision import (
NULL_REVISION,
)
from .mapping import (
decode_git_path,
encode_git_path,
)
class GitBlobContentFactory(object):
"""Static data content factory.
This takes a fulltext when created and just returns that during
get_bytes_as('fulltext').
:ivar sha1: None, or the sha1 of the content fulltext.
:ivar storage_kind: The native storage kind of this factory. Always
'fulltext'.
:ivar key: The key of this content. Each key is a tuple with a single
string in it.
:ivar parents: A tuple of parent keys for self.key. If the object has
no parent information, None (as opposed to () for an empty list of
parents).
"""
def __init__(self, store, path, revision, blob_id):
"""Create a ContentFactory."""
self.store = store
self.key = (path, revision)
self.storage_kind = 'git-blob'
self.parents = None
self.blob_id = blob_id
self.size = None
def get_bytes_as(self, storage_kind):
if storage_kind == 'fulltext':
return self.store[self.blob_id].as_raw_string()
elif storage_kind == 'lines':
return list(osutils.chunks_to_lines(self.store[self.blob_id].as_raw_chunks()))
elif storage_kind == 'chunked':
return self.store[self.blob_id].as_raw_chunks()
raise UnavailableRepresentation(self.key, storage_kind,
self.storage_kind)
def iter_bytes_as(self, storage_kind):
if storage_kind == 'lines':
return iter(osutils.chunks_to_lines(self.store[self.blob_id].as_raw_chunks()))
elif storage_kind == 'chunked':
return iter(self.store[self.blob_id].as_raw_chunks())
raise UnavailableRepresentation(self.key, storage_kind,
self.storage_kind)
class GitAbsentContentFactory(object):
"""Absent data content factory.
:ivar sha1: None, or the sha1 of the content fulltext.
:ivar storage_kind: The native storage kind of this factory. Always
'fulltext'.
:ivar key: The key of this content. Each key is a tuple with a single
string in it.
:ivar parents: A tuple of parent keys for self.key. If the object has
no parent information, None (as opposed to () for an empty list of
parents).
"""
def __init__(self, store, path, revision):
"""Create a ContentFactory."""
self.store = store
self.key = (path, revision)
self.storage_kind = 'absent'
self.parents = None
self.size = None
def get_bytes_as(self, storage_kind):
raise ValueError
def iter_bytes_as(self, storage_kind):
raise ValueError
class AnnotateProvider(object):
def __init__(self, change_scanner):
self.change_scanner = change_scanner
self.store = self.change_scanner.repository._git.object_store
def _get_parents(self, path, text_revision):
commit_id, mapping = (
self.change_scanner.repository.lookup_bzr_revision_id(
text_revision))
text_parents = []
path = encode_git_path(path)
for commit_parent in self.store[commit_id].parents:
try:
(path, text_parent) = (
self.change_scanner.find_last_change_revision(
path, commit_parent))
except KeyError:
continue
if text_parent not in text_parents:
text_parents.append(text_parent)
return tuple([
(decode_git_path(path),
self.change_scanner.repository.lookup_foreign_revision_id(p))
for p in text_parents])
def get_parent_map(self, keys):
ret = {}
for key in keys:
(path, text_revision) = key
if text_revision == NULL_REVISION:
ret[key] = ()
continue
try:
ret[key] = self._get_parents(path, text_revision)
except KeyError:
pass
return ret
def get_record_stream(self, keys, ordering, include_delta_closure):
if ordering == 'topological':
graph = Graph(self)
keys = graph.iter_topo_order(keys)
store = self.change_scanner.repository._git.object_store
for (path, text_revision) in keys:
try:
commit_id, mapping = (
self.change_scanner.repository.lookup_bzr_revision_id(
text_revision))
except NoSuchRevision:
yield GitAbsentContentFactory(store, path, text_revision)
continue
try:
tree_id = store[commit_id].tree
except KeyError:
yield GitAbsentContentFactory(store, path, text_revision)
continue
try:
(mode, blob_sha) = tree_lookup_path(
store.__getitem__, tree_id, encode_git_path(path))
except KeyError:
yield GitAbsentContentFactory(store, path, text_revision)
else:
yield GitBlobContentFactory(
store, path, text_revision, blob_sha)
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