/brz/remove-bazaar

# Copyright (C) 2007-2008 Canonical Ltd

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import bzrlib

from bzrlib import urlutils

from bzrlib.bzrdir import BzrDir, BzrDirFormat

from bzrlib.errors import NoSuchFile, NotLocalUrl

from bzrlib.lockable_files import TransportLock

from bzrlib.repository import Repository

from bzrlib.trace import info

from bzrlib.transport import Transport

from bzrlib.plugins.git import git

from bzrlib.plugins.git.branch import GitBranch

from bzrlib.plugins.git.dir import GitDir

from bzrlib.plugins.git.foreign import ForeignBranch

from bzrlib.plugins.git.repository import GitFormat, GitRepository

import urllib

import urlparse

from dulwich.pack import PackData

class GitSmartTransport(Transport):

    def __init__(self, url, _client=None):

        Transport.__init__(self, url)

        (scheme, _, loc, _, _) = urlparse.urlsplit(url)

        assert scheme == "git"

        hostport, self._path = urllib.splithost(loc)

        (self._host, self._port) = urllib.splitnport(hostport, git.protocol.TCP_GIT_PORT)

        if _client is not None:

            self._client = _client

        else:

            self._client = git.client.TCPGitClient(self._host, self._port)

    def fetch_pack(self, determine_wants, graph_walker, pack_data, progress=None):

        if progress is None:

            def progress(text):

                info("git: %s" % text)

        self._client.fetch_pack(self._path, determine_wants, graph_walker, 

                pack_data, progress)

    def fetch_objects(self, determine_wants, graph_walker, progress=None):

        fd, path = tempfile.mkstemp(dir=self.pack_dir(), suffix=".pack")

        self.fetch_pack(determine_wants, graph_walker, lambda x: os.write(fd, x), progress)

        os.close(fd)

        try:

            p = PackData(path)

            for o in p.iterobjects():

                yield o

        finally:

            os.remove(path)

    def get(self, path):

        raise NoSuchFile(path)

    def clone(self, offset=None):

        """See Transport.clone()."""

        if offset is None:

            newurl = self.base

        else:

            newurl = urlutils.join(self.base, offset)

        return GitSmartTransport(newurl, self._client)

class RemoteGitDir(GitDir):

    def __init__(self, transport, lockfiles, format):

        self._format = format

        self.root_transport = transport

        self.transport = transport

        self._lockfiles = lockfiles

    def open_repository(self):

        return RemoteGitRepository(self, self._lockfiles)

    def open_branch(self):

        repo = self.open_repository()

        # TODO: Support for multiple branches in one bzrdir in bzrlib!

        return RemoteGitBranch(self, repo, "HEAD", self._lockfiles)

    def open_workingtree(self):

        raise NotLocalUrl(self.transport.base)

class RemoteGitRepository(GitRepository):

    def __init__(self, gitdir, lockfiles):

        GitRepository.__init__(self, gitdir, lockfiles)

    def fetch_pack(self, determine_wants, graph_walker, pack_data, 

                   progress=None):

        self._transport.fetch_pack(determine_wants, graph_walker, pack_data, 

            progress)

class RemoteGitBranch(GitBranch):

    def __init__(self, bzrdir, repository, name, lockfiles):

        def determine_wants(heads):

            self._ref = heads[name]

        bzrdir.root_transport.fetch_pack(determine_wants, None, lambda x: None, 

                             lambda x: mutter("git: %s" % x))

        super(RemoteGitBranch, self).__init__(bzrdir, repository, name, self._ref, lockfiles)

    def last_revision(self):

        return self.mapping.revision_id_foreign_to_bzr(self._ref)