/brz/remove-bazaar

# Copyright (C) 2006-2009 Canonical Ltd

# Authors: Robert Collins <robert.collins@canonical.com>

#          Jelmer Vernooij <jelmer@samba.org>

#          John Carr <john.carr@unrouted.co.uk>

#

# 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

"""A GIT branch and repository format implementation for bzr."""

import os

import sys

import bzrlib

import bzrlib.api

from bzrlib import (

    bzrdir,

    errors as bzr_errors,

    osutils,

    )

from bzrlib.foreign import (

    foreign_vcs_registry,

    )

from bzrlib.lockable_files import (

    TransportLock,

    )

from bzrlib.transport import (

    register_lazy_transport,

    register_transport_proto,

    )

from bzrlib.commands import (

    plugin_cmds,

    )

from bzrlib.trace import (

    warning,

    )

from bzrlib.version_info_formats.format_rio import (

    RioVersionInfoBuilder,

    )

# versions ending in 'exp' mean experimental mappings

# versions ending in 'dev' mean development version

# versions ending in 'final' mean release (well tested, etc)

version_info = (0, 2, 2, 'dev', 0)

if version_info[3] == 'final':

    version_string = '%d.%d.%d' % version_info[:3]

else:

    version_string = '%d.%d.%d%s%d' % version_info

__version__ = version_string

MINIMUM_DULWICH_VERSION = (0, 2, 2)

COMPATIBLE_BZR_VERSIONS = [(1, 14, 0), (1, 15, 0)]

if getattr(sys, "frozen", None):

    # allow import additional libs from ./_lib for bzr.exe only

    sys.path.append(os.path.normpath(os.path.join(os.path.dirname(__file__), '_lib')))

_versions_checked = False

def lazy_check_versions():

    global _versions_checked

    if _versions_checked:

        return

    _versions_checked = True

    try:

        from dulwich import __version__ as dulwich_version

    except ImportError:

        raise ImportError("bzr-git: Please install dulwich, https://launchpad.net/dulwich")

    else:

        if dulwich_version < MINIMUM_DULWICH_VERSION:

            raise ImportError("bzr-git: Dulwich is too old; at least %d.%d.%d is required" % MINIMUM_DULWICH_VERSION)

bzrlib.api.require_any_api(bzrlib, COMPATIBLE_BZR_VERSIONS)

bzrdir.format_registry.register_lazy('git', 

    "bzrlib.plugins.git.dir", "LocalGitBzrDirFormat",

    help='GIT repository.', native=False, experimental=True,

    )

from bzrlib.revisionspec import revspec_registry

revspec_registry.register_lazy("git:", "bzrlib.plugins.git.revspec", 

    "RevisionSpec_git")

class GitBzrDirFormat(bzrdir.BzrDirFormat):

    _lock_class = TransportLock

    def is_supported(self):

        return True

class LocalGitBzrDirFormat(GitBzrDirFormat):

    """The .git directory control format."""

    @classmethod

    def _known_formats(self):

        return set([LocalGitBzrDirFormat()])

    def open(self, transport, _found=None):

        """Open this directory.

        """

        import dulwich as git

        # we dont grok readonly - git isn't integrated with transport.

        url = transport.base

        if url.startswith('readonly+'):

            url = url[len('readonly+'):]

        try:

            gitrepo = git.repo.Repo(transport.local_abspath(".").encode(osutils._fs_enc))

        except bzr_errors.NotLocalUrl:

            raise bzr_errors.NotBranchError(path=transport.base)

        from bzrlib.plugins.git.dir import LocalGitDir, GitLockableFiles, GitLock

        lockfiles = GitLockableFiles(transport, GitLock())

        return LocalGitDir(transport, lockfiles, gitrepo, self)

    @classmethod

    def probe_transport(klass, transport):

        """Our format is present if the transport ends in '.not/'."""

        from bzrlib.transport.local import LocalTransport

        if not isinstance(transport, LocalTransport):

            raise bzr_errors.NotBranchError(path=transport.base)

        # This should quickly filter out most things that are not 

        # git repositories, saving us the trouble from loading dulwich.

        if not transport.has(".git") and not transport.has("objects"):

            raise bzr_errors.NotBranchError(path=transport.base)

        import dulwich as git

        format = klass()

        try:

            format.open(transport)

            return format

        except git.errors.NotGitRepository, e:

            raise bzr_errors.NotBranchError(path=transport.base)

        raise bzr_errors.NotBranchError(path=transport.base)

    def get_format_description(self):

        return "Local Git Repository"

    def get_format_string(self):

        return "Local Git Repository"

    def initialize_on_transport(self, transport):

        from bzrlib.transport.local import LocalTransport

        if not isinstance(transport, LocalTransport):

            raise NotImplementedError(self.initialize, 

                "Can't create Git Repositories/branches on "

                "non-local transports")

        from dulwich.repo import Repo

        Repo.create(transport.local_abspath(".").encode(osutils._fs_enc)) 

        return self.open(transport)

    def is_supported(self):

        return True

class RemoteGitBzrDirFormat(GitBzrDirFormat):

    """The .git directory control format."""

    @classmethod

    def _known_formats(self):

        return set([RemoteGitBzrDirFormat()])

    def open(self, transport, _found=None):

        """Open this directory.

        """

        # we dont grok readonly - git isn't integrated with transport.

        url = transport.base

        if url.startswith('readonly+'):

            url = url[len('readonly+'):]

        if (not url.startswith("git://") and 

            not url.startswith("git+")):

            raise bzr_errors.NotBranchError(transport.base)

        from bzrlib.plugins.git.remote import RemoteGitDir, GitSmartTransport

        if not isinstance(transport, GitSmartTransport):

            raise bzr_errors.NotBranchError(transport.base)

        from bzrlib.plugins.git.dir import GitLockableFiles, GitLock

        lockfiles = GitLockableFiles(transport, GitLock())

        return RemoteGitDir(transport, lockfiles, self)

    @classmethod

    def probe_transport(klass, transport):

        """Our format is present if the transport ends in '.not/'."""

        url = transport.base

        if url.startswith('readonly+'):

            url = url[len('readonly+'):]

        if (not url.startswith("git://") and 

            not url.startswith("git+")):

            raise bzr_errors.NotBranchError(transport.base)

        # little ugly, but works

        format = klass()

        from bzrlib.plugins.git.remote import GitSmartTransport

        if not isinstance(transport, GitSmartTransport):

            raise bzr_errors.NotBranchError(transport.base)

        # The only way to know a path exists and contains a valid repository 

        # is to do a request against it:

        try:

            transport.fetch_pack(lambda x: [], None, lambda x: None, 

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

        except errors.git_errors.GitProtocolError:

            raise bzr_errors.NotBranchError(path=transport.base)

        else:

            return format

        raise bzr_errors.NotBranchError(path=transport.base)

    def get_format_description(self):

        return "Remote Git Repository"

    def get_format_string(self):

        return "Remote Git Repository"

    def initialize_on_transport(self, transport):

        raise bzr_errors.UninitializableFormat(self)

bzrdir.BzrDirFormat.register_control_format(LocalGitBzrDirFormat)

bzrdir.BzrDirFormat.register_control_format(RemoteGitBzrDirFormat)

register_transport_proto('git://', 

        help="Access using the Git smart server protocol.")

register_transport_proto('git+ssh://', 

        help="Access using the Git smart server protocol over SSH.")

register_lazy_transport("git://", 'bzrlib.plugins.git.remote',

                        'TCPGitSmartTransport')

register_lazy_transport("git+ssh://", 'bzrlib.plugins.git.remote',

                        'SSHGitSmartTransport')

foreign_vcs_registry.register_lazy("git", 

    "bzrlib.plugins.git.mapping", "foreign_git", "Stupid content tracker")

plugin_cmds.register_lazy("cmd_git_serve", [], "bzrlib.plugins.git.commands")

plugin_cmds.register_lazy("cmd_git_import", [], "bzrlib.plugins.git.commands")

plugin_cmds.register_lazy("cmd_git_object", ["git-objects", "git-cat"], 

    "bzrlib.plugins.git.commands")

def update_stanza(rev, stanza):

    mapping = getattr(rev, "mapping", None)

    if mapping is not None and mapping.revid_prefix.startswith("git-"):

        stanza.add("git-commit", rev.foreign_revid)

rio_hooks = getattr(RioVersionInfoBuilder, "hooks", None)

if rio_hooks is not None:

    rio_hooks.install_named_hook('revision', update_stanza, None)

def get_rich_root_format(stacked=False):

    if stacked:

        return bzrdir.format_registry.make_bzrdir("1.9-rich-root")

    else:

        return bzrdir.format_registry.make_bzrdir("default-rich-root")

def test_suite():

    from bzrlib.plugins.git import tests

    return tests.test_suite()