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"""Converters, etc for going between Bazaar and Git ids."""
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from bzrlib import errors, foreign
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from bzrlib.inventory import ROOT_ID
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from bzrlib.inventory import (
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from bzrlib.foreign import (
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from bzrlib.xml_serializer import (
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DEFAULT_FILE_MODE = stat.S_IFREG | 0644
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def escape_file_id(file_id):
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return file_id.replace('_', '__').replace(' ', '_s')
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def unescape_file_id(file_id):
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return file_id.replace("_s", " ").replace("__", "_")
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while i < len(file_id):
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ret.append(file_id[i])
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if file_id[i+1] == '_':
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elif file_id[i+1] == 's':
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raise AssertionError("unknown escape character %s" % file_id[i+1])
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def fix_person_identifier(text):
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if "<" in text and ">" in text:
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return "%s <%s>" % (text, text)
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def warn_escaped(commit, num_escaped):
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trace.warning("Escaped %d XML-invalid characters in %s. Will be unable "
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"to regenerate the SHA map.", num_escaped, commit)
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def warn_unusual_mode(commit, path, mode):
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trace.warning("Unusual file mode %o for %s in %s. Will be unable to "
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"regenerate the SHA map.", mode, path, commit)
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class BzrGitMapping(foreign.VcsMapping):
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raise AssertionError("Commit object can't be None")
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rev = ForeignRevision(commit.id, self, self.revision_id_foreign_to_bzr(commit.id))
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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.message = commit.message.decode("utf-8", "replace")
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rev.committer = str(commit.committer).decode("utf-8", "replace")
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rev.message, num_escaped = escape_invalid_chars(commit.message.decode("utf-8", "replace"))
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warn_escaped(commit.id, num_escaped)
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rev.committer, num_escaped = escape_invalid_chars(str(commit.committer).decode("utf-8", "replace"))
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warn_escaped(commit.id, num_escaped)
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if commit.committer != commit.author:
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rev.properties['author'] = str(commit.author).decode("utf-8", "replace")
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rev.properties['author'], num_escaped = escape_invalid_chars(str(commit.author).decode("utf-8", "replace"))
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warn_escaped(commit.id, num_escaped)
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if commit.commit_time != commit.author_time:
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rev.properties['author-timestamp'] = str(commit.author_time)
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if commit.commit_timezone != commit.author_timezone:
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rev.properties['author-timezone'] = "%d" % (commit.author_timezone, )
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rev.timestamp = commit.commit_time
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rev.timezone = commit.commit_timezone
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def export_commit(self, rev, tree_sha):
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"""Turn a Bazaar revision in to a Git commit
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:param tree_sha: HACK parameter (until we can retrieve this from the mapping)
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:return dulwich.objects.Commit represent the revision:
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from dulwich.objects import Commit
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commit._tree = tree_sha
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for p in rev.parent_ids:
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commit._parents.append(self.revision_id_bzr_to_foreign(p))
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commit._message = rev.message
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commit._committer = rev.committer
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if 'author' in rev.properties:
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commit._author = rev.properties['author']
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commit._author = rev.committer
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commit._commit_time = long(rev.timestamp)
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class BzrGitMappingv1(BzrGitMapping):
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revid_prefix = 'git-v1'
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experimental = False
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return self.revid_prefix
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class BzrGitMappingExperimental(BzrGitMappingv1):
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revid_prefix = 'git-experimental'
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foreign_git = ForeignGit()
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default_mapping = BzrGitMappingv1()
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def text_to_blob(texts, entry):
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from dulwich.objects import Blob
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text = texts.get_record_stream([(entry.file_id, entry.revision)], 'unordered', True).next().get_bytes_as('fulltext')
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def symlink_to_blob(entry):
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from dulwich.objects import Blob
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blob._text = entry.symlink_target
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def mode_is_executable(mode):
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return bool(mode & 0111)
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entry_kind = (mode & 0700000) / 0100000
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elif entry_kind == 1:
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file_kind = (mode & 070000) / 010000
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return 'tree-reference'
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raise AssertionError(
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"Unknown file kind %d, perms=%o." % (file_kind, mode,))
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raise AssertionError(
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"Unknown kind, perms=%r." % (mode,))
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def entry_mode(entry):
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if entry.kind == 'directory':
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elif entry.kind == 'symlink':
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elif entry.kind == 'file':
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mode = stat.S_IFREG | 0644
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def directory_to_tree(entry, lookup_ie_sha1):
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from dulwich.objects import Tree
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for name in sorted(entry.children.keys()):
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ie = entry.children[name]
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tree.add(entry_mode(ie), name.encode("utf-8"), lookup_ie_sha1(ie))
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def inventory_to_tree_and_blobs(inventory, texts, mapping, cur=None):
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"""Convert a Bazaar tree to a Git tree.
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:return: Yields tuples with object sha1, object and path
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from dulwich.objects import Tree
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# stack contains the set of trees that we haven't
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# finished constructing
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for path, entry in inventory.iter_entries():
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while stack and not path.startswith(osutils.pathjoin(cur, "")):
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# We've hit a file that's not a child of the previous path
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yield sha, tree, cur.encode("utf-8")
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t = (stat.S_IFDIR, urlutils.basename(cur).encode('UTF-8'), sha)
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cur, tree = stack.pop()
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if entry.kind == "directory":
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stack.append((cur, tree))
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if entry.kind == "file":
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blob = text_to_blob(texts, entry)
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elif entry.kind == "symlink":
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blob = symlink_to_blob(entry)
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raise AssertionError("Unknown kind %s" % entry.kind)
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yield sha, blob, path.encode("utf-8")
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name = urlutils.basename(path).encode("utf-8")
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tree.add(entry_mode(entry), name, sha)
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while len(stack) > 1:
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yield sha, tree, cur.encode("utf-8")
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t = (stat.S_IFDIR, urlutils.basename(cur).encode('UTF-8'), sha)
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cur, tree = stack.pop()
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yield tree.id, tree, cur.encode("utf-8")
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def revision_to_commit(rev, tree_sha, parent_lookup):
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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 bzr revision
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:return dulwich.objects.Commit represent the revision:
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from dulwich.objects import Commit
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commit.tree = tree_sha
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for p in rev.parent_ids:
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git_p = parent_lookup(p)
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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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commit.parents.append(git_p)
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commit.message = rev.message.encode("utf-8")
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commit.committer = fix_person_identifier(rev.committer.encode("utf-8"))
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commit.author = fix_person_identifier(rev.get_apparent_authors()[0].encode("utf-8"))
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commit.commit_time = long(rev.timestamp)
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if 'author-timestamp' in rev.properties:
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commit.author_time = long(rev.properties['author-timestamp'])
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commit.author_time = commit.commit_time
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commit.commit_timezone = rev.timezone
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if 'author-timezone' in rev.properties:
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commit.author_timezone = int(rev.properties['author-timezone'])
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commit.author_timezone = commit.commit_timezone