|
|
# bzr.py - bzr support for the convert extension
|
|
|
#
|
|
|
# Copyright 2008, 2009 Marek Kubica <marek@xivilization.net> and others
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2, incorporated herein by reference.
|
|
|
|
|
|
# This module is for handling 'bzr', that was formerly known as Bazaar-NG;
|
|
|
# it cannot access 'bar' repositories, but they were never used very much
|
|
|
|
|
|
import os
|
|
|
from mercurial import demandimport
|
|
|
# these do not work with demandimport, blacklist
|
|
|
demandimport.ignore.extend([
|
|
|
'bzrlib.transactions',
|
|
|
'bzrlib.urlutils',
|
|
|
])
|
|
|
|
|
|
from mercurial.i18n import _
|
|
|
from mercurial import util
|
|
|
from common import NoRepo, commit, converter_source
|
|
|
|
|
|
try:
|
|
|
# bazaar imports
|
|
|
from bzrlib import branch, revision, errors
|
|
|
from bzrlib.revisionspec import RevisionSpec
|
|
|
except ImportError:
|
|
|
pass
|
|
|
|
|
|
supportedkinds = ('file', 'symlink')
|
|
|
|
|
|
class bzr_source(converter_source):
|
|
|
"""Reads Bazaar repositories by using the Bazaar Python libraries"""
|
|
|
|
|
|
def __init__(self, ui, path, rev=None):
|
|
|
super(bzr_source, self).__init__(ui, path, rev=rev)
|
|
|
|
|
|
if not os.path.exists(os.path.join(path, '.bzr')):
|
|
|
raise NoRepo('%s does not look like a Bazaar repo' % path)
|
|
|
|
|
|
try:
|
|
|
# access bzrlib stuff
|
|
|
branch
|
|
|
except NameError:
|
|
|
raise NoRepo('Bazaar modules could not be loaded')
|
|
|
|
|
|
path = os.path.abspath(path)
|
|
|
self.branch = branch.Branch.open(path)
|
|
|
self.sourcerepo = self.branch.repository
|
|
|
self._parentids = {}
|
|
|
|
|
|
def before(self):
|
|
|
"""Before the conversion begins, acquire a read lock
|
|
|
for all the operations that might need it. Fortunately
|
|
|
read locks don't block other reads or writes to the
|
|
|
repository, so this shouldn't have any impact on the usage of
|
|
|
the source repository.
|
|
|
|
|
|
The alternative would be locking on every operation that
|
|
|
needs locks (there are currently two: getting the file and
|
|
|
getting the parent map) and releasing immediately after,
|
|
|
but this approach can take even 40% longer."""
|
|
|
self.sourcerepo.lock_read()
|
|
|
|
|
|
def after(self):
|
|
|
self.sourcerepo.unlock()
|
|
|
|
|
|
def getheads(self):
|
|
|
if not self.rev:
|
|
|
return [self.branch.last_revision()]
|
|
|
try:
|
|
|
r = RevisionSpec.from_string(self.rev)
|
|
|
info = r.in_history(self.branch)
|
|
|
except errors.BzrError:
|
|
|
raise util.Abort(_('%s is not a valid revision in current branch')
|
|
|
% self.rev)
|
|
|
return [info.rev_id]
|
|
|
|
|
|
def getfile(self, name, rev):
|
|
|
revtree = self.sourcerepo.revision_tree(rev)
|
|
|
fileid = revtree.path2id(name)
|
|
|
kind = None
|
|
|
if fileid is not None:
|
|
|
kind = revtree.kind(fileid)
|
|
|
if kind not in supportedkinds:
|
|
|
# the file is not available anymore - was deleted
|
|
|
raise IOError(_('%s is not available in %s anymore') %
|
|
|
(name, rev))
|
|
|
if kind == 'symlink':
|
|
|
target = revtree.get_symlink_target(fileid)
|
|
|
if target is None:
|
|
|
raise util.Abort(_('%s.%s symlink has no target')
|
|
|
% (name, rev))
|
|
|
return target
|
|
|
else:
|
|
|
sio = revtree.get_file(fileid)
|
|
|
return sio.read()
|
|
|
|
|
|
def getmode(self, name, rev):
|
|
|
return self._modecache[(name, rev)]
|
|
|
|
|
|
def getchanges(self, version):
|
|
|
# set up caches: modecache and revtree
|
|
|
self._modecache = {}
|
|
|
self._revtree = self.sourcerepo.revision_tree(version)
|
|
|
# get the parentids from the cache
|
|
|
parentids = self._parentids.pop(version)
|
|
|
# only diff against first parent id
|
|
|
prevtree = self.sourcerepo.revision_tree(parentids[0])
|
|
|
return self._gettreechanges(self._revtree, prevtree)
|
|
|
|
|
|
def getcommit(self, version):
|
|
|
rev = self.sourcerepo.get_revision(version)
|
|
|
# populate parent id cache
|
|
|
if not rev.parent_ids:
|
|
|
parents = []
|
|
|
self._parentids[version] = (revision.NULL_REVISION,)
|
|
|
else:
|
|
|
parents = self._filterghosts(rev.parent_ids)
|
|
|
self._parentids[version] = parents
|
|
|
|
|
|
return commit(parents=parents,
|
|
|
date='%d %d' % (rev.timestamp, -rev.timezone),
|
|
|
author=self.recode(rev.committer),
|
|
|
# bzr returns bytestrings or unicode, depending on the content
|
|
|
desc=self.recode(rev.message),
|
|
|
rev=version)
|
|
|
|
|
|
def gettags(self):
|
|
|
if not self.branch.supports_tags():
|
|
|
return {}
|
|
|
tagdict = self.branch.tags.get_tag_dict()
|
|
|
bytetags = {}
|
|
|
for name, rev in tagdict.iteritems():
|
|
|
bytetags[self.recode(name)] = rev
|
|
|
return bytetags
|
|
|
|
|
|
def getchangedfiles(self, rev, i):
|
|
|
self._modecache = {}
|
|
|
curtree = self.sourcerepo.revision_tree(rev)
|
|
|
if i is not None:
|
|
|
parentid = self._parentids[rev][i]
|
|
|
else:
|
|
|
# no parent id, get the empty revision
|
|
|
parentid = revision.NULL_REVISION
|
|
|
|
|
|
prevtree = self.sourcerepo.revision_tree(parentid)
|
|
|
changes = [e[0] for e in self._gettreechanges(curtree, prevtree)[0]]
|
|
|
return changes
|
|
|
|
|
|
def _gettreechanges(self, current, origin):
|
|
|
revid = current._revision_id;
|
|
|
changes = []
|
|
|
renames = {}
|
|
|
for (fileid, paths, changed_content, versioned, parent, name,
|
|
|
kind, executable) in current.iter_changes(origin):
|
|
|
|
|
|
if paths[0] == u'' or paths[1] == u'':
|
|
|
# ignore changes to tree root
|
|
|
continue
|
|
|
|
|
|
# bazaar tracks directories, mercurial does not, so
|
|
|
# we have to rename the directory contents
|
|
|
if kind[1] == 'directory':
|
|
|
if kind[0] not in (None, 'directory'):
|
|
|
# Replacing 'something' with a directory, record it
|
|
|
# so it can be removed.
|
|
|
changes.append((self.recode(paths[0]), revid))
|
|
|
|
|
|
if None not in paths and paths[0] != paths[1]:
|
|
|
# neither an add nor an delete - a move
|
|
|
# rename all directory contents manually
|
|
|
subdir = origin.inventory.path2id(paths[0])
|
|
|
# get all child-entries of the directory
|
|
|
for name, entry in origin.inventory.iter_entries(subdir):
|
|
|
# hg does not track directory renames
|
|
|
if entry.kind == 'directory':
|
|
|
continue
|
|
|
frompath = self.recode(paths[0] + '/' + name)
|
|
|
topath = self.recode(paths[1] + '/' + name)
|
|
|
# register the files as changed
|
|
|
changes.append((frompath, revid))
|
|
|
changes.append((topath, revid))
|
|
|
# add to mode cache
|
|
|
mode = ((entry.executable and 'x') or (entry.kind == 'symlink' and 's')
|
|
|
or '')
|
|
|
self._modecache[(topath, revid)] = mode
|
|
|
# register the change as move
|
|
|
renames[topath] = frompath
|
|
|
|
|
|
# no futher changes, go to the next change
|
|
|
continue
|
|
|
|
|
|
# we got unicode paths, need to convert them
|
|
|
path, topath = [self.recode(part) for part in paths]
|
|
|
|
|
|
if topath is None:
|
|
|
# file deleted
|
|
|
changes.append((path, revid))
|
|
|
continue
|
|
|
|
|
|
# renamed
|
|
|
if path and path != topath:
|
|
|
renames[topath] = path
|
|
|
changes.append((path, revid))
|
|
|
|
|
|
# populate the mode cache
|
|
|
kind, executable = [e[1] for e in (kind, executable)]
|
|
|
mode = ((executable and 'x') or (kind == 'symlink' and 'l')
|
|
|
or '')
|
|
|
self._modecache[(topath, revid)] = mode
|
|
|
changes.append((topath, revid))
|
|
|
|
|
|
return changes, renames
|
|
|
|
|
|
def _filterghosts(self, ids):
|
|
|
"""Filters out ghost revisions which hg does not support, see
|
|
|
<http://bazaar-vcs.org/GhostRevision>
|
|
|
"""
|
|
|
parentmap = self.sourcerepo.get_parent_map(ids)
|
|
|
parents = tuple([parent for parent in ids if parent in parentmap])
|
|
|
return parents
|
|
|
|
|
|
def recode(self, s, encoding=None):
|
|
|
"""This version of recode tries to encode unicode to bytecode,
|
|
|
and preferably using the UTF-8 codec.
|
|
|
Other types than Unicode are silently returned, this is by
|
|
|
intention, e.g. the None-type is not going to be encoded but instead
|
|
|
just passed through
|
|
|
"""
|
|
|
if not encoding:
|
|
|
encoding = self.encoding or 'utf-8'
|
|
|
|
|
|
if isinstance(s, unicode):
|
|
|
return s.encode(encoding)
|
|
|
else:
|
|
|
# leave it alone
|
|
|
return s
|
|
|
|
