Revert "Merge branch 'jc/graduate-remote-hg-bzr' (early part)"
[git/git.git] / contrib / remote-helpers / git-remote-bzr
index be4b9a3..712a137 100755 (executable)
 #!/usr/bin/env python
-#
-# Copyright (c) 2012 Felipe Contreras
-#
-
-#
-# Just copy to your ~/bin, or anywhere in your $PATH.
-# Then you can clone with:
-# % git clone bzr::/path/to/bzr/repo/or/url
-#
-# For example:
-# % git clone bzr::$HOME/myrepo
-# or
-# % git clone bzr::lp:myrepo
-#
-# If you want to specify which branches you want to track (per repo):
-# % git config remote.origin.bzr-branches 'trunk, devel, test'
-#
-# Where 'origin' is the name of the repository you want to specify the
-# branches.
-#
-
-import sys
-
-import bzrlib
-if hasattr(bzrlib, "initialize"):
-    bzrlib.initialize()
-
-import bzrlib.plugin
-bzrlib.plugin.load_plugins()
-
-import bzrlib.generate_ids
-import bzrlib.transport
-import bzrlib.errors
-import bzrlib.ui
-import bzrlib.urlutils
-import bzrlib.branch
 
 import sys
-import os
-import json
-import re
-import StringIO
-import atexit, shutil, hashlib, urlparse, subprocess
 
 sys.stderr.write('WARNING: git-remote-bzr is now maintained independently.\n')
 sys.stderr.write('WARNING: For more information visit https://github.com/felipec/git-remote-bzr\n')
 
-NAME_RE = re.compile('^([^<>]+)')
-AUTHOR_RE = re.compile('^([^<>]+?)? ?[<>]([^<>]*)(?:$|>)')
-EMAIL_RE = re.compile(r'([^ \t<>]+@[^ \t<>]+)')
-RAW_AUTHOR_RE = re.compile('^(\w+) (.+)? <(.*)> (\d+) ([+-]\d+)')
-
-def die(msg, *args):
-    sys.stderr.write('ERROR: %s\n' % (msg % args))
-    sys.exit(1)
-
-def warn(msg, *args):
-    sys.stderr.write('WARNING: %s\n' % (msg % args))
-
-def gittz(tz):
-    return '%+03d%02d' % (tz / 3600, tz % 3600 / 60)
-
-def get_config(config):
-    cmd = ['git', 'config', '--get', config]
-    process = subprocess.Popen(cmd, stdout=subprocess.PIPE)
-    output, _ = process.communicate()
-    return output
-
-class Marks:
-
-    def __init__(self, path):
-        self.path = path
-        self.tips = {}
-        self.marks = {}
-        self.rev_marks = {}
-        self.last_mark = 0
-        self.load()
-
-    def load(self):
-        if not os.path.exists(self.path):
-            return
-
-        tmp = json.load(open(self.path))
-        self.tips = tmp['tips']
-        self.marks = tmp['marks']
-        self.last_mark = tmp['last-mark']
-
-        for rev, mark in self.marks.iteritems():
-            self.rev_marks[mark] = rev
-
-    def dict(self):
-        return { 'tips': self.tips, 'marks': self.marks, 'last-mark' : self.last_mark }
-
-    def store(self):
-        json.dump(self.dict(), open(self.path, 'w'))
-
-    def __str__(self):
-        return str(self.dict())
-
-    def from_rev(self, rev):
-        return self.marks[rev]
-
-    def to_rev(self, mark):
-        return str(self.rev_marks[mark])
-
-    def next_mark(self):
-        self.last_mark += 1
-        return self.last_mark
-
-    def get_mark(self, rev):
-        self.last_mark += 1
-        self.marks[rev] = self.last_mark
-        return self.last_mark
-
-    def is_marked(self, rev):
-        return rev in self.marks
-
-    def new_mark(self, rev, mark):
-        self.marks[rev] = mark
-        self.rev_marks[mark] = rev
-        self.last_mark = mark
-
-    def get_tip(self, branch):
-        try:
-            return str(self.tips[branch])
-        except KeyError:
-            return None
-
-    def set_tip(self, branch, tip):
-        self.tips[branch] = tip
-
-class Parser:
-
-    def __init__(self, repo):
-        self.repo = repo
-        self.line = self.get_line()
-
-    def get_line(self):
-        return sys.stdin.readline().strip()
-
-    def __getitem__(self, i):
-        return self.line.split()[i]
-
-    def check(self, word):
-        return self.line.startswith(word)
-
-    def each_block(self, separator):
-        while self.line != separator:
-            yield self.line
-            self.line = self.get_line()
-
-    def __iter__(self):
-        return self.each_block('')
-
-    def next(self):
-        self.line = self.get_line()
-        if self.line == 'done':
-            self.line = None
-
-    def get_mark(self):
-        i = self.line.index(':') + 1
-        return int(self.line[i:])
-
-    def get_data(self):
-        if not self.check('data'):
-            return None
-        i = self.line.index(' ') + 1
-        size = int(self.line[i:])
-        return sys.stdin.read(size)
-
-    def get_author(self):
-        m = RAW_AUTHOR_RE.match(self.line)
-        if not m:
-            return None
-        _, name, email, date, tz = m.groups()
-        name = name.decode('utf-8')
-        committer = '%s <%s>' % (name, email)
-        tz = int(tz)
-        tz = ((tz / 100) * 3600) + ((tz % 100) * 60)
-        return (committer, int(date), tz)
-
-def rev_to_mark(rev):
-    return marks.from_rev(rev)
-
-def mark_to_rev(mark):
-    return marks.to_rev(mark)
-
-def fixup_user(user):
-    name = mail = None
-    user = user.replace('"', '')
-    m = AUTHOR_RE.match(user)
-    if m:
-        name = m.group(1)
-        mail = m.group(2).strip()
-    else:
-        m = EMAIL_RE.match(user)
-        if m:
-            mail = m.group(1)
-        else:
-            m = NAME_RE.match(user)
-            if m:
-                name = m.group(1).strip()
-
-    if not name:
-        name = 'unknown'
-    if not mail:
-        mail = 'Unknown'
-
-    return '%s <%s>' % (name, mail)
-
-def get_filechanges(cur, prev):
-    modified = {}
-    removed = {}
-
-    changes = cur.changes_from(prev)
-
-    def u(s):
-        return s.encode('utf-8')
-
-    for path, fid, kind in changes.added:
-        modified[u(path)] = fid
-    for path, fid, kind in changes.removed:
-        removed[u(path)] = None
-    for path, fid, kind, mod, _ in changes.modified:
-        modified[u(path)] = fid
-    for oldpath, newpath, fid, kind, mod, _ in changes.renamed:
-        removed[u(oldpath)] = None
-        if kind == 'directory':
-            lst = cur.list_files(from_dir=newpath, recursive=True)
-            for path, file_class, kind, fid, entry in lst:
-                if kind != 'directory':
-                    modified[u(newpath + '/' + path)] = fid
-        else:
-            modified[u(newpath)] = fid
-
-    return modified, removed
-
-def export_files(tree, files):
-    final = []
-    for path, fid in files.iteritems():
-        kind = tree.kind(fid)
-
-        h = tree.get_file_sha1(fid)
-
-        if kind == 'symlink':
-            d = tree.get_symlink_target(fid)
-            mode = '120000'
-        elif kind == 'file':
-
-            if tree.is_executable(fid):
-                mode = '100755'
-            else:
-                mode = '100644'
-
-            # is the blob already exported?
-            if h in filenodes:
-                mark = filenodes[h]
-                final.append((mode, mark, path))
-                continue
-
-            d = tree.get_file_text(fid)
-        elif kind == 'directory':
-            continue
-        else:
-            die("Unhandled kind '%s' for path '%s'" % (kind, path))
-
-        mark = marks.next_mark()
-        filenodes[h] = mark
-
-        print "blob"
-        print "mark :%u" % mark
-        print "data %d" % len(d)
-        print d
-
-        final.append((mode, mark, path))
-
-    return final
-
-def export_branch(repo, name):
-    ref = '%s/heads/%s' % (prefix, name)
-    tip = marks.get_tip(name)
-
-    branch = get_remote_branch(name)
-    repo = branch.repository
-
-    branch.lock_read()
-    revs = branch.iter_merge_sorted_revisions(None, tip, 'exclude', 'forward')
-    try:
-        tip_revno = branch.revision_id_to_revno(tip)
-        last_revno, _ = branch.last_revision_info()
-        total = last_revno - tip_revno
-    except bzrlib.errors.NoSuchRevision:
-        tip_revno = 0
-        total = 0
-
-    for revid, _, seq, _ in revs:
-
-        if marks.is_marked(revid):
-            continue
-
-        rev = repo.get_revision(revid)
-        revno = seq[0]
-
-        parents = rev.parent_ids
-        time = rev.timestamp
-        tz = rev.timezone
-        committer = rev.committer.encode('utf-8')
-        committer = "%s %u %s" % (fixup_user(committer), time, gittz(tz))
-        authors = rev.get_apparent_authors()
-        if authors:
-            author = authors[0].encode('utf-8')
-            author = "%s %u %s" % (fixup_user(author), time, gittz(tz))
-        else:
-            author = committer
-        msg = rev.message.encode('utf-8')
-
-        msg += '\n'
-
-        if len(parents) == 0:
-            parent = bzrlib.revision.NULL_REVISION
-        else:
-            parent = parents[0]
-
-        cur_tree = repo.revision_tree(revid)
-        prev = repo.revision_tree(parent)
-        modified, removed = get_filechanges(cur_tree, prev)
-
-        modified_final = export_files(cur_tree, modified)
-
-        if len(parents) == 0:
-            print 'reset %s' % ref
-
-        print "commit %s" % ref
-        print "mark :%d" % (marks.get_mark(revid))
-        print "author %s" % (author)
-        print "committer %s" % (committer)
-        print "data %d" % (len(msg))
-        print msg
-
-        for i, p in enumerate(parents):
-            try:
-                m = rev_to_mark(p)
-            except KeyError:
-                # ghost?
-                continue
-            if i == 0:
-                print "from :%s" % m
-            else:
-                print "merge :%s" % m
-
-        for f in removed:
-            print "D %s" % (f,)
-        for f in modified_final:
-            print "M %s :%u %s" % f
-        print
-
-        if len(seq) > 1:
-            # let's skip branch revisions from the progress report
-            continue
-
-        progress = (revno - tip_revno)
-        if (progress % 100 == 0):
-            if total:
-                print "progress revision %d '%s' (%d/%d)" % (revno, name, progress, total)
-            else:
-                print "progress revision %d '%s' (%d)" % (revno, name, progress)
-
-    branch.unlock()
-
-    revid = branch.last_revision()
-
-    # make sure the ref is updated
-    print "reset %s" % ref
-    print "from :%u" % rev_to_mark(revid)
-    print
-
-    marks.set_tip(name, revid)
-
-def export_tag(repo, name):
-    ref = '%s/tags/%s' % (prefix, name)
-    print "reset %s" % ref
-    print "from :%u" % rev_to_mark(tags[name])
-    print
-
-def do_import(parser):
-    repo = parser.repo
-    path = os.path.join(dirname, 'marks-git')
-
-    print "feature done"
-    if os.path.exists(path):
-        print "feature import-marks=%s" % path
-    print "feature export-marks=%s" % path
-    print "feature force"
-    sys.stdout.flush()
-
-    while parser.check('import'):
-        ref = parser[1]
-        if ref.startswith('refs/heads/'):
-            name = ref[len('refs/heads/'):]
-            export_branch(repo, name)
-        if ref.startswith('refs/tags/'):
-            name = ref[len('refs/tags/'):]
-            export_tag(repo, name)
-        parser.next()
-
-    print 'done'
-
-    sys.stdout.flush()
-
-def parse_blob(parser):
-    parser.next()
-    mark = parser.get_mark()
-    parser.next()
-    data = parser.get_data()
-    blob_marks[mark] = data
-    parser.next()
-
-class CustomTree():
-
-    def __init__(self, branch, revid, parents, files):
-        self.updates = {}
-        self.branch = branch
-
-        def copy_tree(revid):
-            files = files_cache[revid] = {}
-            branch.lock_read()
-            tree = branch.repository.revision_tree(revid)
-            try:
-                for path, entry in tree.iter_entries_by_dir():
-                    files[path] = [entry.file_id, None]
-            finally:
-                branch.unlock()
-            return files
-
-        if len(parents) == 0:
-            self.base_id = bzrlib.revision.NULL_REVISION
-            self.base_files = {}
-        else:
-            self.base_id = parents[0]
-            self.base_files = files_cache.get(self.base_id, None)
-            if not self.base_files:
-                self.base_files = copy_tree(self.base_id)
-
-        self.files = files_cache[revid] = self.base_files.copy()
-        self.rev_files = {}
-
-        for path, data in self.files.iteritems():
-            fid, mark = data
-            self.rev_files[fid] = [path, mark]
-
-        for path, f in files.iteritems():
-            fid, mark = self.files.get(path, [None, None])
-            if not fid:
-                fid = bzrlib.generate_ids.gen_file_id(path)
-            f['path'] = path
-            self.rev_files[fid] = [path, mark]
-            self.updates[fid] = f
-
-    def last_revision(self):
-        return self.base_id
-
-    def iter_changes(self):
-        changes = []
-
-        def get_parent(dirname, basename):
-            parent_fid, mark = self.base_files.get(dirname, [None, None])
-            if parent_fid:
-                return parent_fid
-            parent_fid, mark = self.files.get(dirname, [None, None])
-            if parent_fid:
-                return parent_fid
-            if basename == '':
-                return None
-            fid = bzrlib.generate_ids.gen_file_id(path)
-            add_entry(fid, dirname, 'directory')
-            return fid
-
-        def add_entry(fid, path, kind, mode=None):
-            dirname, basename = os.path.split(path)
-            parent_fid = get_parent(dirname, basename)
-
-            executable = False
-            if mode == '100755':
-                executable = True
-            elif mode == '120000':
-                kind = 'symlink'
-
-            change = (fid,
-                    (None, path),
-                    True,
-                    (False, True),
-                    (None, parent_fid),
-                    (None, basename),
-                    (None, kind),
-                    (None, executable))
-            self.files[path] = [change[0], None]
-            changes.append(change)
-
-        def update_entry(fid, path, kind, mode=None):
-            dirname, basename = os.path.split(path)
-            parent_fid = get_parent(dirname, basename)
-
-            executable = False
-            if mode == '100755':
-                executable = True
-            elif mode == '120000':
-                kind = 'symlink'
-
-            change = (fid,
-                    (path, path),
-                    True,
-                    (True, True),
-                    (None, parent_fid),
-                    (None, basename),
-                    (None, kind),
-                    (None, executable))
-            self.files[path] = [change[0], None]
-            changes.append(change)
-
-        def remove_entry(fid, path, kind):
-            dirname, basename = os.path.split(path)
-            parent_fid = get_parent(dirname, basename)
-            change = (fid,
-                    (path, None),
-                    True,
-                    (True, False),
-                    (parent_fid, None),
-                    (None, None),
-                    (None, None),
-                    (None, None))
-            del self.files[path]
-            changes.append(change)
-
-        for fid, f in self.updates.iteritems():
-            path = f['path']
-
-            if 'deleted' in f:
-                remove_entry(fid, path, 'file')
-                continue
-
-            if path in self.base_files:
-                update_entry(fid, path, 'file', f['mode'])
-            else:
-                add_entry(fid, path, 'file', f['mode'])
-
-            self.files[path][1] = f['mark']
-            self.rev_files[fid][1] = f['mark']
-
-        return changes
-
-    def get_content(self, file_id):
-        path, mark = self.rev_files[file_id]
-        if mark:
-            return blob_marks[mark]
-
-        # last resort
-        tree = self.branch.repository.revision_tree(self.base_id)
-        return tree.get_file_text(file_id)
-
-    def get_file_with_stat(self, file_id, path=None):
-        content = self.get_content(file_id)
-        return (StringIO.StringIO(content), None)
-
-    def get_symlink_target(self, file_id):
-        return self.get_content(file_id)
-
-    def id2path(self, file_id):
-        path, mark = self.rev_files[file_id]
-        return path
-
-def c_style_unescape(string):
-    if string[0] == string[-1] == '"':
-        return string.decode('string-escape')[1:-1]
-    return string
-
-def parse_commit(parser):
-    parents = []
-
-    ref = parser[1]
-    parser.next()
-
-    if ref.startswith('refs/heads/'):
-        name = ref[len('refs/heads/'):]
-        branch = get_remote_branch(name)
-    else:
-        die('unknown ref')
-
-    commit_mark = parser.get_mark()
-    parser.next()
-    author = parser.get_author()
-    parser.next()
-    committer = parser.get_author()
-    parser.next()
-    data = parser.get_data()
-    parser.next()
-    if parser.check('from'):
-        parents.append(parser.get_mark())
-        parser.next()
-    while parser.check('merge'):
-        parents.append(parser.get_mark())
-        parser.next()
-
-    # fast-export adds an extra newline
-    if data[-1] == '\n':
-        data = data[:-1]
-
-    files = {}
-
-    for line in parser:
-        if parser.check('M'):
-            t, m, mark_ref, path = line.split(' ', 3)
-            mark = int(mark_ref[1:])
-            f = { 'mode' : m, 'mark' : mark }
-        elif parser.check('D'):
-            t, path = line.split(' ', 1)
-            f = { 'deleted' : True }
-        else:
-            die('Unknown file command: %s' % line)
-        path = c_style_unescape(path).decode('utf-8')
-        files[path] = f
-
-    committer, date, tz = committer
-    author, _, _ = author
-    parents = [mark_to_rev(p) for p in parents]
-    revid = bzrlib.generate_ids.gen_revision_id(committer, date)
-    props = {}
-    props['branch-nick'] = branch.nick
-    props['authors'] = author
-
-    mtree = CustomTree(branch, revid, parents, files)
-    changes = mtree.iter_changes()
-
-    branch.lock_write()
-    try:
-        builder = branch.get_commit_builder(parents, None, date, tz, committer, props, revid)
-        try:
-            list(builder.record_iter_changes(mtree, mtree.last_revision(), changes))
-            builder.finish_inventory()
-            builder.commit(data.decode('utf-8', 'replace'))
-        except Exception, e:
-            builder.abort()
-            raise
-    finally:
-        branch.unlock()
-
-    parsed_refs[ref] = revid
-    marks.new_mark(revid, commit_mark)
-
-def parse_reset(parser):
-    ref = parser[1]
-    parser.next()
-
-    # ugh
-    if parser.check('commit'):
-        parse_commit(parser)
-        return
-    if not parser.check('from'):
-        return
-    from_mark = parser.get_mark()
-    parser.next()
-
-    parsed_refs[ref] = mark_to_rev(from_mark)
-
-def do_export(parser):
-    parser.next()
-
-    for line in parser.each_block('done'):
-        if parser.check('blob'):
-            parse_blob(parser)
-        elif parser.check('commit'):
-            parse_commit(parser)
-        elif parser.check('reset'):
-            parse_reset(parser)
-        elif parser.check('tag'):
-            pass
-        elif parser.check('feature'):
-            pass
-        else:
-            die('unhandled export command: %s' % line)
-
-    for ref, revid in parsed_refs.iteritems():
-        if ref.startswith('refs/heads/'):
-            name = ref[len('refs/heads/'):]
-            branch = get_remote_branch(name)
-            branch.generate_revision_history(revid, marks.get_tip(name))
-
-            if name in peers:
-                peer = bzrlib.branch.Branch.open(peers[name],
-                                                 possible_transports=transports)
-                try:
-                    peer.bzrdir.push_branch(branch, revision_id=revid,
-                                            overwrite=force)
-                except bzrlib.errors.DivergedBranches:
-                    print "error %s non-fast forward" % ref
-                    continue
-
-            try:
-                wt = branch.bzrdir.open_workingtree()
-                wt.update()
-            except bzrlib.errors.NoWorkingTree:
-                pass
-        elif ref.startswith('refs/tags/'):
-            # TODO: implement tag push
-            print "error %s pushing tags not supported" % ref
-            continue
-        else:
-            # transport-helper/fast-export bugs
-            continue
-
-        print "ok %s" % ref
-
-    print
-
-def do_capabilities(parser):
-    print "import"
-    print "export"
-    print "refspec refs/heads/*:%s/heads/*" % prefix
-    print "refspec refs/tags/*:%s/tags/*" % prefix
-
-    path = os.path.join(dirname, 'marks-git')
-
-    if os.path.exists(path):
-        print "*import-marks %s" % path
-    print "*export-marks %s" % path
-
-    print "option"
-    print
-
-class InvalidOptionValue(Exception):
-    pass
-
-def get_bool_option(val):
-    if val == 'true':
-        return True
-    elif val == 'false':
-        return False
-    else:
-        raise InvalidOptionValue()
-
-def do_option(parser):
-    global force
-    opt, val = parser[1:3]
-    try:
-        if opt == 'force':
-            force = get_bool_option(val)
-            print 'ok'
-        else:
-            print 'unsupported'
-    except InvalidOptionValue:
-        print "error '%s' is not a valid value for option '%s'" % (val, opt)
-
-def ref_is_valid(name):
-    return not True in [c in name for c in '~^: \\']
-
-def do_list(parser):
-    master_branch = None
-
-    for name in branches:
-        if not master_branch:
-            master_branch = name
-        print "? refs/heads/%s" % name
-
-    branch = get_remote_branch(master_branch)
-    branch.lock_read()
-    for tag, revid in branch.tags.get_tag_dict().items():
-        try:
-            branch.revision_id_to_dotted_revno(revid)
-        except bzrlib.errors.NoSuchRevision:
-            continue
-        if not ref_is_valid(tag):
-            continue
-        print "? refs/tags/%s" % tag
-        tags[tag] = revid
-    branch.unlock()
-
-    print "@refs/heads/%s HEAD" % master_branch
-    print
-
-def clone(path, remote_branch):
-    try:
-        bdir = bzrlib.bzrdir.BzrDir.create(path, possible_transports=transports)
-    except bzrlib.errors.AlreadyControlDirError:
-        bdir = bzrlib.bzrdir.BzrDir.open(path, possible_transports=transports)
-    repo = bdir.find_repository()
-    repo.fetch(remote_branch.repository)
-    return remote_branch.sprout(bdir, repository=repo)
-
-def get_remote_branch(name):
-    remote_branch = bzrlib.branch.Branch.open(branches[name],
-                                              possible_transports=transports)
-    if isinstance(remote_branch.bzrdir.root_transport, bzrlib.transport.local.LocalTransport):
-        return remote_branch
-
-    branch_path = os.path.join(dirname, 'clone', name)
-
-    try:
-        branch = bzrlib.branch.Branch.open(branch_path,
-                                           possible_transports=transports)
-    except bzrlib.errors.NotBranchError:
-        # clone
-        branch = clone(branch_path, remote_branch)
-    else:
-        # pull
-        try:
-            branch.pull(remote_branch, overwrite=True)
-        except bzrlib.errors.DivergedBranches:
-            # use remote branch for now
-            return remote_branch
-
-    return branch
-
-def find_branches(repo):
-    transport = repo.bzrdir.root_transport
-
-    for fn in transport.iter_files_recursive():
-        if not fn.endswith('.bzr/branch-format'):
-            continue
-
-        name = subdir = fn[:-len('/.bzr/branch-format')]
-        name = name if name != '' else 'master'
-        name = name.replace('/', '+')
-
-        try:
-            cur = transport.clone(subdir)
-            branch = bzrlib.branch.Branch.open_from_transport(cur)
-        except bzrlib.errors.NotBranchError:
-            continue
-        else:
-            yield name, branch.base
-
-def get_repo(url, alias):
-    normal_url = bzrlib.urlutils.normalize_url(url)
-    origin = bzrlib.bzrdir.BzrDir.open(url, possible_transports=transports)
-    is_local = isinstance(origin.transport, bzrlib.transport.local.LocalTransport)
-
-    shared_path = os.path.join(gitdir, 'bzr')
-    try:
-        shared_dir = bzrlib.bzrdir.BzrDir.open(shared_path,
-                                               possible_transports=transports)
-    except bzrlib.errors.NotBranchError:
-        shared_dir = bzrlib.bzrdir.BzrDir.create(shared_path,
-                                                 possible_transports=transports)
-    try:
-        shared_repo = shared_dir.open_repository()
-    except bzrlib.errors.NoRepositoryPresent:
-        shared_repo = shared_dir.create_repository(shared=True)
-
-    if not is_local:
-        clone_path = os.path.join(dirname, 'clone')
-        if not os.path.exists(clone_path):
-            os.mkdir(clone_path)
-        else:
-            # check and remove old organization
-            try:
-                bdir = bzrlib.bzrdir.BzrDir.open(clone_path,
-                                                 possible_transports=transports)
-                bdir.destroy_repository()
-            except bzrlib.errors.NotBranchError:
-                pass
-            except bzrlib.errors.NoRepositoryPresent:
-                pass
-
-    wanted = get_config('remote.%s.bzr-branches' % alias).rstrip().split(', ')
-    # stupid python
-    wanted = [e for e in wanted if e]
-    if not wanted:
-        wanted = get_config('remote-bzr.branches').rstrip().split(', ')
-        # stupid python
-        wanted = [e for e in wanted if e]
-
-    if not wanted:
-        try:
-            repo = origin.open_repository()
-            if not repo.bzrdir.root_transport.listable():
-                # this repository is not usable for us
-                raise bzrlib.errors.NoRepositoryPresent(repo.bzrdir)
-        except bzrlib.errors.NoRepositoryPresent:
-            wanted = ['master']
-
-    if wanted:
-        def list_wanted(url, wanted):
-            for name in wanted:
-                subdir = name if name != 'master' else ''
-                yield name, bzrlib.urlutils.join(url, subdir)
-
-        branch_list = list_wanted(url, wanted)
-    else:
-        branch_list = find_branches(repo)
-
-    for name, url in branch_list:
-        if not is_local:
-            peers[name] = url
-        branches[name] = url
-
-    return origin
-
-def fix_path(alias, orig_url):
-    url = urlparse.urlparse(orig_url, 'file')
-    if url.scheme != 'file' or os.path.isabs(url.path):
-        return
-    abs_url = urlparse.urljoin("%s/" % os.getcwd(), orig_url)
-    cmd = ['git', 'config', 'remote.%s.url' % alias, "bzr::%s" % abs_url]
-    subprocess.call(cmd)
-
-def main(args):
-    global marks, prefix, gitdir, dirname
-    global tags, filenodes
-    global blob_marks
-    global parsed_refs
-    global files_cache
-    global is_tmp
-    global branches, peers
-    global transports
-    global force
-
-    marks = None
-    is_tmp = False
-    gitdir = os.environ.get('GIT_DIR', None)
-
-    if len(args) < 3:
-        die('Not enough arguments.')
-
-    if not gitdir:
-        die('GIT_DIR not set')
-
-    alias = args[1]
-    url = args[2]
-
-    tags = {}
-    filenodes = {}
-    blob_marks = {}
-    parsed_refs = {}
-    files_cache = {}
-    branches = {}
-    peers = {}
-    transports = []
-    force = False
-
-    if alias[5:] == url:
-        is_tmp = True
-        alias = hashlib.sha1(alias).hexdigest()
-
-    prefix = 'refs/bzr/%s' % alias
-    dirname = os.path.join(gitdir, 'bzr', alias)
-
-    if not is_tmp:
-        fix_path(alias, url)
-
-    if not os.path.exists(dirname):
-        os.makedirs(dirname)
-
-    if hasattr(bzrlib.ui.ui_factory, 'be_quiet'):
-        bzrlib.ui.ui_factory.be_quiet(True)
-
-    repo = get_repo(url, alias)
-
-    marks_path = os.path.join(dirname, 'marks-int')
-    marks = Marks(marks_path)
-
-    parser = Parser(repo)
-    for line in parser:
-        if parser.check('capabilities'):
-            do_capabilities(parser)
-        elif parser.check('list'):
-            do_list(parser)
-        elif parser.check('import'):
-            do_import(parser)
-        elif parser.check('export'):
-            do_export(parser)
-        elif parser.check('option'):
-            do_option(parser)
-        else:
-            die('unhandled command: %s' % line)
-        sys.stdout.flush()
-
-def bye():
-    if not marks:
-        return
-    if not is_tmp:
-        marks.store()
-    else:
-        shutil.rmtree(dirname)
-
-atexit.register(bye)
-sys.exit(main(sys.argv))
+sys.stderr.write('''WARNING:
+WARNING: You can pick a directory on your $PATH and download it, e.g.:
+WARNING:   $ wget -O $HOME/bin/git-remote-bzr \\
+WARNING:     https://raw.github.com/felipec/git-remote-bzr/master/git-remote-bzr
+WARNING:   $ chmod +x $HOME/bin/git-remote-bzr
+''')