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# Copyright (C) 2011 Canonical Ltd
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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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"""File graph access."""
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from __future__ import absolute_import
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from dulwich.errors import (
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from dulwich.object_store import (
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from ...revision import (
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class GitFileLastChangeScanner(object):
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def __init__(self, repository):
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self.repository = repository
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self.store = self.repository._git.object_store
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def find_last_change_revision(self, path, commit_id):
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commit = self.store[commit_id]
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target_mode, target_sha = tree_lookup_path(self.store.__getitem__,
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parent_commits = [self.store[c] for c in commit.parents]
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for parent_commit in parent_commits:
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mode, sha = tree_lookup_path(self.store.__getitem__,
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parent_commit.tree, path)
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except (NotTreeError, KeyError):
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if mode != target_mode or sha != target_sha:
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return (path, commit.id)
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if parent_commits == []:
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commit = parent_commits[0]
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return (path, commit.id)
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class GitFileParentProvider(object):
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def __init__(self, change_scanner):
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self.change_scanner = change_scanner
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self.store = self.change_scanner.repository._git.object_store
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def _get_parents(self, file_id, text_revision):
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commit_id, mapping = self.change_scanner.repository.lookup_bzr_revision_id(
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path = mapping.parse_file_id(file_id)
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for commit_parent in self.store[commit_id].parents:
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(_, text_parent) = self.change_scanner.find_last_change_revision(path, commit_parent)
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if text_parent not in text_parents:
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text_parents.append(text_parent)
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return tuple([(file_id,
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self.change_scanner.repository.lookup_foreign_revision_id(p)) for p
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def get_parent_map(self, keys):
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(file_id, text_revision) = key
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if text_revision == NULL_REVISION:
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ret[key] = self._get_parents(file_id, text_revision)
added
removed
filegraph.py
