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# Copyright (C) 2007 Canonical Ltd
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# Copyright (C) 2008-2010 Jelmer Vernooij <jelmer@samba.org>
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# Copyright (C) 2008-2009 Jelmer Vernooij <jelmer@samba.org>
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# Copyright (C) 2008 John Carr
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# This program is free software; you can redistribute it and/or modify
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"property. ", mode, path, commit)
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def squash_revision(target_repo, rev):
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"""Remove characters that can't be stored from a revision, if necessary.
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:param target_repo: Repository in which the revision will be stored
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:param rev: Revision object, will be modified in-place
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if not getattr(target_repo._serializer, "squashes_xml_invalid_characters", True):
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from bzrlib.xml_serializer import escape_invalid_chars
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rev.message, num_escaped = escape_invalid_chars(rev.message)
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warn_escaped(rev.foreign_revid, num_escaped)
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if 'author' in rev.properties:
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rev.properties['author'], num_escaped = escape_invalid_chars(
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rev.properties['author'])
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warn_escaped(rev.foreign_revid, num_escaped)
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rev.committer, num_escaped = escape_invalid_chars(rev.committer)
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warn_escaped(rev.foreign_revid, num_escaped)
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class BzrGitMapping(foreign.VcsMapping):
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"""Class that maps between Git and Bazaar semantics."""
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experimental = False
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BZR_FILE_IDS_FILE = None
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BZR_DUMMY_FILE = None
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def __init__(self):
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super(BzrGitMapping, self).__init__(foreign_git)
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def __eq__(self, other):
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return (type(self) == type(other) and
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return (type(self) == type(other) and
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self.revid_prefix == other.revid_prefix)
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# We must just hope they are valid UTF-8..
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if type(path) is unicode:
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path = path.encode("utf-8")
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return escape_file_id(path)
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def is_control_file(self, path):
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return path in (self.BZR_FILE_IDS_FILE, self.BZR_DUMMY_FILE)
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def parse_file_id(self, file_id):
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if file_id == ROOT_ID:
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return unescape_file_id(file_id)
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def revid_as_refname(self, revid):
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return "refs/bzr/%s" % urllib.quote(revid)
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def import_unusual_file_modes(self, rev, unusual_file_modes):
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if unusual_file_modes:
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ret = [(path, unusual_file_modes[path])
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def _extract_git_svn_metadata(self, rev, message):
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lines = message.split("\n")
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if not (lines[-1] == "" and len(lines) >= 2 and lines[-2].startswith("git-svn-id:")):
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if not (lines[-1] == "" and lines[-2].startswith("git-svn-id:")):
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git_svn_id = lines[-2].split(": ", 1)[1]
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rev.properties['git-svn-id'] = git_svn_id
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return message, metadata
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def _decode_commit_message(self, rev, message, encoding):
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return message.decode(encoding), BzrGitRevisionMetadata()
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message, metadata = self._extract_bzr_metadata(rev, message)
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return message.decode(encoding), metadata
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def _encode_commit_message(self, rev, message, encoding):
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return message.encode(encoding)
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def export_fileid_map(self, fileid_map):
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"""Export a file id map to a fileid map.
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:param fileid_map: File id map, mapping paths to file ids
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:return: A Git blob object
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from dulwich.objects import Blob
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b.set_raw_chunks(serialize_fileid_map(fileid_map))
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def export_commit(self, rev, tree_sha, parent_lookup, roundtrip,
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def export_commit(self, rev, tree_sha, parent_lookup, roundtrip, file_ids):
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"""Turn a Bazaar revision in to a Git commit
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:param tree_sha: Tree sha for the commit
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:param parent_lookup: Function for looking up the GIT sha equiv of a
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:param roundtrip: Whether to store roundtripping information.
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:param verifiers: Verifiers info
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:return dulwich.objects.Commit represent the revision:
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from dulwich.objects import Commit
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metadata.explicit_parent_ids = rev.parent_ids
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if git_p is not None:
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assert len(git_p) == 40, "unexpected length for %r" % git_p
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parents.append(git_p)
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commit.parents = parents
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commit.parents.append(git_p)
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encoding = rev.properties['git-explicit-encoding']
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commit.author_timezone = commit.commit_timezone
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commit.message = self._encode_commit_message(rev, rev.message,
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assert type(commit.message) == str
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if metadata is not None:
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mapping_registry.parse_revision_id(rev.revision_id)
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for k, v in rev.properties.iteritems():
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if not k in mapping_properties:
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metadata.properties[k] = v
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if self.roundtripping:
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commit.message = inject_bzr_metadata(commit.message, metadata,
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assert type(commit.message) == str
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metadata.file_ids = file_ids
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commit.message = inject_bzr_metadata(commit.message, metadata)
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def import_fileid_map(self, blob):
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"""Convert a git file id map blob.
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:param blob: Git blob object with fileid map
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:return: Dictionary mapping paths to file ids
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return deserialize_fileid_map(blob.data)
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def import_commit(self, commit, lookup_parent_revid):
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def import_commit(self, commit):
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"""Convert a git commit to a bzr revision.
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:return: a `bzrlib.revision.Revision` object, foreign revid and a
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:return: a `bzrlib.revision.Revision` object and a
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dictionary of path -> file ids
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if commit is None:
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raise AssertionError("Commit object can't be None")
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rev = ForeignRevision(commit.id, self,
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self.revision_id_foreign_to_bzr(commit.id))
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rev.parent_ids = tuple([lookup_parent_revid(p) for p in commit.parents])
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rev.parent_ids = tuple([self.revision_id_foreign_to_bzr(p) for p in commit.parents])
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rev.git_metadata = None
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def decode_using_encoding(rev, commit, encoding):
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rev.committer = str(commit.committer).decode(encoding)
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rev.timezone = commit.commit_timezone
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if rev.git_metadata is not None:
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md = rev.git_metadata
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roundtrip_revid = md.revision_id
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file_ids = md.file_ids
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rev.revision_id = md.revision_id
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if md.explicit_parent_ids:
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rev.parent_ids = md.explicit_parent_ids
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rev.properties.update(md.properties)
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verifiers = md.verifiers
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roundtrip_revid = None
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return rev, roundtrip_revid, verifiers
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def get_fileid_map(self, lookup_object, tree_sha):
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"""Obtain a fileid map for a particular tree.
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:param lookup_object: Function for looking up an object
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:param tree_sha: SHA of the root tree
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:return: GitFileIdMap instance
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file_id_map_sha = lookup_object(tree_sha)[self.BZR_FILE_IDS_FILE][1]
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file_ids = self.import_fileid_map(lookup_object(file_id_map_sha))
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return GitFileIdMap(file_ids, self)
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class BzrGitMappingv1(BzrGitMapping):
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class BzrGitMappingExperimental(BzrGitMappingv1):
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revid_prefix = 'git-experimental'
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experimental = True
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BZR_FILE_IDS_FILE = '.bzrfileids'
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BZR_DUMMY_FILE = '.bzrdummy'
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def _decode_commit_message(self, rev, message, encoding):
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message = self._extract_hg_metadata(rev, message)
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ret += self._generate_git_svn_metadata(rev, encoding)
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def import_commit(self, commit, lookup_parent_revid):
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rev, roundtrip_revid, verifiers = super(BzrGitMappingExperimental, self).import_commit(commit, lookup_parent_revid)
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def import_commit(self, commit):
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rev, file_ids = super(BzrGitMappingExperimental, self).import_commit(commit)
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rev.properties['converted_revision'] = "git %s\n" % commit.id
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return rev, roundtrip_revid, verifiers
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class GitMappingRegistry(VcsMappingRegistry):
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return object_mode(entry.kind, entry.executable)
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def directory_to_tree(entry, lookup_ie_sha1, unusual_modes, empty_file_name):
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"""Create a Git Tree object from a Bazaar directory.
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:param entry: Inventory entry
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:param lookup_ie_sha1: Lookup the Git SHA1 for a inventory entry
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:param unusual_modes: Dictionary with unusual file modes by file ids
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:param empty_file_name: Name to use for dummy files in empty directories,
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None to ignore empty directories.
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from dulwich.objects import Blob, Tree
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def directory_to_tree(entry, lookup_ie_sha1, unusual_modes):
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from dulwich.objects import Tree
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for name, value in entry.children.iteritems():
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ie = entry.children[name]
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tree.add(mode, name.encode("utf-8"), hexsha)
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if entry.parent_id is not None and len(tree) == 0:
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# Only the root can be an empty tree
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if empty_file_name is not None:
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tree.add(stat.S_IFREG | 0644, empty_file_name,
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(head, uuid) = text.rsplit(" ", 1)
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(full_url, rev) = head.rsplit("@", 1)
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return (full_url, int(rev), uuid)
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class GitFileIdMap(object):
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def __init__(self, file_ids, mapping):
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self.file_ids = file_ids
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self.mapping = mapping
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def lookup_file_id(self, path):
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assert type(path) is str
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file_id = self.file_ids[path]
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file_id = self.mapping.generate_file_id(path)
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assert type(file_id) is str
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def lookup_path(self, file_id):
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if self.paths is None:
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for k, v in self.file_ids.iteritems():
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path = self.paths[file_id]
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return self.mapping.parse_file_id(file_id)
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assert type(path) is str