/brz/remove-bazaar

# Copyright (C) 2007-2009 Jelmer Vernooij <jelmer@samba.org>

#

# 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 (

    branch,

    tag,

    urlutils,

    )

from bzrlib.bzrdir import (

    BzrDir,

    BzrDirFormat,

    )

from bzrlib.errors import (

    BzrError,

    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 (

    lazy_check_versions,

    )

lazy_check_versions()

from bzrlib.plugins.git.branch import (

    GitBranch,

    )

from bzrlib.plugins.git.errors import (

    NoSuchRef,

    )

from bzrlib.plugins.git.dir import (

    GitDir,

    )

from bzrlib.plugins.git.foreign import (

    ForeignBranch,

    )

from bzrlib.plugins.git.repository import (

    GitRepositoryFormat,

    GitRepository,

    )

import dulwich as git

from dulwich.errors import (

    GitProtocolError,

    )

from dulwich.pack import (

    Pack,

    PackData,

    )

import os

import tempfile

import urllib

import urlparse

try:

    from dulwich.pack import load_pack_index

except ImportError:

    from dulwich.pack import PackIndex as load_pack_index

# Don't run any tests on GitSmartTransport as it is not intended to be 

# a full implementation of Transport

def get_test_permutations():

    return []

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)

        self._client = _client

    def has(self, relpath):

        return False

    def _get_client(self):

        if self._client is not None:

            ret = self._client

            self._client = None

            return ret

        return git.client.TCPGitClient(self._host, self._port, thin_packs=False)

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

        if progress is None:

            def progress(text):

                info("git: %s" % text)

        client = self._get_client()

        try:

            client.fetch_pack(self._path, determine_wants, 

                graph_walker, pack_data, progress)

        except GitProtocolError, e:

            raise BzrError(e)

    def get(self, path):

        raise NoSuchFile(path)

    def abspath(self, relpath):

        return urlutils.join(self.base, relpath)

    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, _unsupported=False):

        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 EmptyObjectStoreIterator(dict):

    def iterobjects(self):

        return []

class TemporaryPackIterator(Pack):

    def __init__(self, path, resolve_ext_ref):

        self.resolve_ext_ref = resolve_ext_ref

        super(TemporaryPackIterator, self).__init__(path)

    @property

    def idx(self):

        if self._idx is None:

            if self._data is None:

                self._data = PackData(self._data_path)

            self._data.create_index_v2(self._idx_path, self.resolve_ext_ref)

            self._idx = load_pack_index(self._idx_path)

        return self._idx

    def __del__(self):

        os.remove(self._data_path)

        os.remove(self._idx_path)

class RemoteGitRepository(GitRepository):

    def __init__(self, gitdir, lockfiles):

        GitRepository.__init__(self, gitdir, lockfiles)

        self._refs = None

    def get_refs(self):

        if self._refs is not None:

            return self._refs

        def determine_wants(heads):

            self._refs = heads

            return []

        self.bzrdir.root_transport.fetch_pack(determine_wants, None, 

            lambda x: None, lambda x: mutter("git: %s" % x))

        return self._refs

    def fetch_pack(self, determine_wants, graph_walker, pack_data, 

                   progress=None):

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

            progress)

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

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

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

        os.close(fd)

        if os.path.getsize(path) == 0:

            return EmptyObjectStoreIterator()

        return TemporaryPackIterator(path[:-len(".pack")], resolve_ext_ref)

class RemoteGitTagDict(tag.BasicTags):

    def __init__(self, branch):

        self.branch = branch

        self.repository = branch.repository

    def get_tag_dict(self):

        ret = {}

        refs = self.repository.get_refs()

        for k,v in refs.iteritems():

            if k.startswith("refs/tags/") and not k.endswith("^{}"):

                v = refs.get(k+"^{}", v)

                ret[k[len("refs/tags/"):]] = self.branch.mapping.revision_id_foreign_to_bzr(v)

        return ret

    def set_tag(self, name, revid):

        # FIXME: Not supported yet, should do a push of a new ref

        raise NotImplementedError(self.set_tag)

class RemoteGitBranch(GitBranch):

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

        heads = repository.get_refs()

        if not name in heads:

            raise NoSuchRef(name)

        self._ref = heads[name]

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

    def last_revision(self):

        return self.mapping.revision_id_foreign_to_bzr(self._ref)

    def _synchronize_history(self, destination, revision_id):

        """See Branch._synchronize_history()."""

        destination.generate_revision_history(self.last_revision())