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__init__.py
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# Copyright (C) 2006 Canonical Ltd
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# Authors: Robert Collins <robert.collins@canonical.com>
 
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#          Jelmer Vernooij <jelmer@samba.org>
 
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#          John Carr <john.carr@unrouted.co.uk>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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"""A GIT branch and repository format implementation for bzr."""
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try:
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    import dulwich as git
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except ImportError:
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    import os, sys
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    sys.path.insert(0, os.path.join(os.path.dirname(__file__), "dulwich"))
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    import dulwich as git
 
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import bzrlib
 
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import bzrlib.api
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from bzrlib import bzrdir
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from bzrlib.foreign import ForeignVcs, VcsMappingRegistry, foreign_vcs_registry
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from bzrlib.plugins.git.dir import LocalGitBzrDirFormat, RemoteGitBzrDirFormat
 
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from bzrlib.foreign import foreign_vcs_registry
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from bzrlib.transport import register_lazy_transport
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bzrdir.format_registry.register(
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    'git', LocalGitBzrDirFormat,
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    help='GIT repository.', 
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    native=False, experimental=True,
 
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from bzrlib.commands import Command, register_command
 
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from bzrlib.option import Option
 
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from bzrlib.trace import warning
 
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MINIMUM_DULWICH_VERSION = (0, 1, 0)
 
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COMPATIBLE_BZR_VERSIONS = [(1, 12, 0)]
 
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_versions_checked = False
 
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def lazy_check_versions():
 
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    global _versions_checked
 
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    if _versions_checked:
 
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        return
 
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    _versions_checked = True
 
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    try:
 
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        from dulwich import __version__ as dulwich_version
 
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    except ImportError:
 
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        warning("Please install dulwich, https://launchpad.net/dulwich")
 
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        raise
 
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    else:
 
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        if dulwich_version < MINIMUM_DULWICH_VERSION:
 
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            warning("Dulwich is too old; at least %d.%d.%d is required" % MINIMUM_DULWICH_VERSION)
 
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            raise ImportError
 
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bzrlib.api.require_any_api(bzrlib, COMPATIBLE_BZR_VERSIONS)
 
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bzrdir.format_registry.register_lazy('git', 
 
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    "bzrlib.plugins.git.dir", "LocalGitBzrDirFormat",
 
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    help='GIT repository.', native=False, experimental=True,
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    )
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bzrdir.BzrDirFormat.register_control_format(LocalGitBzrDirFormat)
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bzrdir.BzrDirFormat.register_control_format(RemoteGitBzrDirFormat)
 
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lazy_check_versions()
 
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# TODO: This should be lazier
 
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from bzrlib.plugins.git.dir import LocalGitBzrDirFormat, RemoteGitBzrDirFormat
 
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bzrdir.BzrDirFormat.register_control_format_lazy("bzrlib.plugins.git.dir", "LocalGitBzrDirFormat")
 
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bzrdir.BzrDirFormat.register_control_format_lazy("bzrlib.plugins.git.dir", "RemoteGitBzrDirFormat")
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register_lazy_transport("git://", 'bzrlib.plugins.git.remote',
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                        'GitSmartTransport')
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class ForeignGit(ForeignVcs):
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    """Foreign Git."""
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git_mapping_registry = VcsMappingRegistry()
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git_mapping_registry.register_lazy('git-experimental', "bzrlib.plugins.git.mapping",
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                                   "BzrGitMappingExperimental")
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foreign_vcs_registry.register("git", ForeignGit(git_mapping_registry), 
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                                      "Stupid content tracker")
 
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foreign_vcs_registry.register_lazy("git", 
 
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                        "bzrlib.plugins.git.mapping", 
 
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                        "foreign_git",
 
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                        "Stupid content tracker")
 
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class cmd_git_serve(Command):
 
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    """Provide access to a Bazaar branch using the git protocol.
 
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    This command is experimental and doesn't do much yet.
 
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    """
 
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    takes_options = [
 
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        Option('directory',
 
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               help='serve contents of directory',
 
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               type=unicode)
 
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    ]
 
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    def run(self, directory=None):
 
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        lazy_check_versions()
 
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        from dulwich.server import TCPGitServer
 
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        from bzrlib.plugins.git.server import BzrBackend
 
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        from bzrlib.trace import warning
 
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        import os
 
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        warning("server support in bzr-git is experimental.")
 
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        if directory is None:
 
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            directory = os.getcwd()
 
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        backend = BzrBackend(directory)
 
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        server = TCPGitServer(backend, 'localhost')
 
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        server.serve_forever()
 
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register_command(cmd_git_serve)
 
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class cmd_git_import(Command):
 
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    """Import all branches from a git repository.
 
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    """
 
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    takes_args = ["src_location", "dest_location"]
 
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    def run(self, src_location, dest_location):
 
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        from bzrlib.bzrdir import BzrDir, format_registry
 
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        from bzrlib.errors import NoRepositoryPresent, NotBranchError
 
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        from bzrlib.repository import Repository
 
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        source_repo = Repository.open(src_location)
 
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        format = format_registry.make_bzrdir('rich-root-pack')
 
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        try:
 
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            target_bzrdir = BzrDir.open(dest_location)
 
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        except NotBranchError:
 
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            target_bzrdir = BzrDir.create(dest_location, format=format)
 
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        try:
 
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            target_repo = target_bzrdir.open_repository()
 
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        except NoRepositoryPresent:
 
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            target_repo = target_bzrdir.create_repository(shared=True)
 
125
 
 
126
        target_repo.fetch(source_repo)
 
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        for name, ref in source_repo._git.heads().iteritems():
 
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            head_loc = os.path.join(dest_location, name)
 
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            try:
 
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                head_bzrdir = BzrDir.open(head_loc)
 
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            except NotBranchError:
 
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                head_bzrdir = BzrDir.create(head_loc, format=format)
 
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            try:
 
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                head_branch = head_bzrdir.open_branch()
 
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            except NotBranchError:
 
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                head_branch = head_bzrdir.create_branch()
 
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            head_branch.generate_revision_history(source_repo.get_mapping().revision_id_foreign_to_bzr(ref))
 
138
 
 
139
 
 
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register_command(cmd_git_import)
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def test_suite():