/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

"""Git-specific subcommands for Bazaar."""

from bzrlib.commands import (

    Command,

    display_command,

    )

from bzrlib.option import (

    Option,

    )

class cmd_git_import(Command):

    """Import all branches from a git repository.

    """

    takes_args = ["src_location", "dest_location?"]

    def _get_colocated_branch(self, target_bzrdir, name):

        from bzrlib.errors import NotBranchError

        try:

            return target_bzrdir.open_branch(name=name)

        except NotBranchError:

            return target_bzrdir.create_branch(name=name)

    def _get_nested_branch(self, dest_transport, dest_format, name):

        from bzrlib.bzrdir import BzrDir

        from bzrlib.errors import NotBranchError

        head_transport = dest_transport.clone(name)

        try:

            head_bzrdir = BzrDir.open_from_transport(head_transport)

        except NotBranchError:

            head_bzrdir = dest_format.initialize_on_transport_ex(

                head_transport, create_prefix=True)[1]

        try:

            return head_bzrdir.open_branch()

        except NotBranchError:

            return head_bzrdir.create_branch()

    def run(self, src_location, dest_location=None):

        from collections import defaultdict

        import os

        import urllib

        from bzrlib import (

            controldir,

            trace,

            ui,

            urlutils,

            )

        from bzrlib.bzrdir import (

            BzrDir,

            )

        from bzrlib.errors import (

            BzrCommandError,

            NoRepositoryPresent,

            NotBranchError,

            )

        from bzrlib.repository import (

            InterRepository,

            Repository,

            )

        from bzrlib.transport import get_transport

        from bzrlib.plugins.git.branch import (

            GitBranch,

            extract_tags,

            )

        from bzrlib.plugins.git.refs import ref_to_branch_name

        from bzrlib.plugins.git.repository import GitRepository

        dest_format = controldir.ControlDirFormat.get_default_format()

        if dest_location is None:

            dest_location = os.path.basename(src_location.rstrip("/\\"))

        dest_transport = get_transport(dest_location)

        source_repo = Repository.open(src_location)

        if not isinstance(source_repo, GitRepository):

            raise BzrCommandError("%r is not a git repository" % src_location)

        try:

            target_bzrdir = BzrDir.open_from_transport(dest_transport)

        except NotBranchError:

            target_bzrdir = dest_format.initialize_on_transport_ex(

                dest_transport, shared_repo=True)[1]

        try:

            target_repo = target_bzrdir.find_repository()

        except NoRepositoryPresent:

            target_repo = target_bzrdir.create_repository(shared=True)

        if not target_repo.supports_rich_root():

            raise BzrCommandError("Target repository doesn't support rich roots")

        interrepo = InterRepository.get(source_repo, target_repo)

        mapping = source_repo.get_mapping()

        refs = interrepo.fetch()

        unpeeled_tags = defaultdict(set)

        tags = {}

        for k, (peeled, unpeeled) in extract_tags(refs).iteritems():

            tags[k] = mapping.revision_id_foreign_to_bzr(peeled)

            if unpeeled is not None:

                unpeeled_tags[peeled].add(unpeeled)

        # FIXME: Store unpeeled tag map

        pb = ui.ui_factory.nested_progress_bar()

        try:

            for i, (name, ref) in enumerate(refs.iteritems()):

                try:

                    branch_name = ref_to_branch_name(name)

                except ValueError:

                    # Not a branch, ignore

                    continue

                pb.update("creating branches", i, len(refs))

                if getattr(target_bzrdir._format, "colocated_branches", False):

                    if name == "HEAD":

                        branch_name = None

                    head_branch = self._get_colocated_branch(target_bzrdir, branch_name)

                else:

                    head_branch = self._get_nested_branch(dest_transport, dest_format, branch_name)

                revid = mapping.revision_id_foreign_to_bzr(ref)

                source_branch = GitBranch(source_repo.bzrdir, source_repo,

                    ref, tags)

                source_branch.head = ref

                if head_branch.last_revision() != revid:

                    head_branch.generate_revision_history(revid)

                source_branch.tags.merge_to(head_branch.tags)

                if not head_branch.get_parent():

                    url = urlutils.join_segment_parameters(

                        source_branch.base, {"ref": urllib.quote(name, '')})

                    head_branch.set_parent(url)

        finally:

            pb.finished()

        trace.note("Use 'bzr checkout' to create a working tree in "

                   "the newly created branches.")

class cmd_git_object(Command):

    """List or display Git objects by SHA.

    Cat a particular object's Git representation if a SHA is specified.

    List all available SHAs otherwise.

    """

    hidden = True

    aliases = ["git-objects", "git-cat"]

    takes_args = ["sha1?"]

    takes_options = [Option('directory',

        short_name='d',

        help='Location of repository.', type=unicode),

        Option('pretty', help='Pretty-print objects.')]

    encoding_type = 'exact'

    @display_command

    def run(self, sha1=None, directory=".", pretty=False):

        from bzrlib.errors import (

            BzrCommandError,

            )

        from bzrlib.bzrdir import (

            BzrDir,

            )

        bzrdir, _ = BzrDir.open_containing(directory)

        repo = bzrdir.find_repository()

        from bzrlib.plugins.git.object_store import (

            get_object_store,

            )

        object_store = get_object_store(repo)

        object_store.lock_read()

        try:

            if sha1 is not None:

                try:

                    obj = object_store[str(sha1)]

                except KeyError:

                    raise BzrCommandError("Object not found: %s" % sha1)

                if pretty:

                    text = obj.as_pretty_string()

                else:

                    text = obj.as_raw_string()

                self.outf.write(text)

            else:

                for sha1 in object_store:

                    self.outf.write("%s\n" % sha1)

        finally:

            object_store.unlock()

class cmd_git_refs(Command):

    """Output all of the virtual refs for a repository.

    """

    hidden = True

    takes_options = [Option('directory',

        short_name='d',

        help='Location of repository.', type=unicode)]

    @display_command

    def run(self, directory="."):

        from bzrlib.bzrdir import (

            BzrDir,

            )

        from bzrlib.plugins.git.refs import (

            get_refs,

            )

        from bzrlib.plugins.git.object_store import (

            get_object_store,

            )

        bzrdir, _ = BzrDir.open_containing(directory)

        repo = bzrdir.find_repository()

        object_store = get_object_store(repo)

        object_store.lock_read()

        try:

            refs = get_refs(bzrdir)

            for k, v in refs.iteritems():

                self.outf.write("%s -> %s\n" % (k, v))

        finally:

            object_store.unlock()

class cmd_git_apply(Command):

    """Apply a series of git-am style patches.

    This command will in the future probably be integrated into 

    "bzr pull".

    """

    takes_options = [

        Option('signoff', short_name='s', help='Add a Signed-off-by line.'),

        'force']

    takes_args = ["patches*"]

    def _apply_patch(self, wt, f, signoff):

        """Apply a patch.

        :param wt: A Bazaar working tree object.

        :param f: Patch file to read.

        :param signoff: Add Signed-Off-By flag.

        """

        from bzrlib.errors import BzrCommandError

        from dulwich.patch import git_am_patch_split

        import subprocess

        (c, diff, version) = git_am_patch_split(f)

        # FIXME: Cope with git-specific bits in patch

        # FIXME: Add new files to working tree

        p = subprocess.Popen(["patch", "-p1"], stdin=subprocess.PIPE,

            cwd=wt.basedir)

        p.communicate(diff)

        exitcode = p.wait()

        if exitcode != 0:

            raise BzrCommandError("error running patch")

        message = c.message

        if signoff:

            signed_off_by = wt.branch.get_config().username()

            message += "Signed-off-by: %s\n" % signed_off_by.encode('utf-8')

        wt.commit(authors=[c.author], message=message)

    def run(self, patches_list=None, signoff=False, force=False):

        from bzrlib.errors import UncommittedChanges

        from bzrlib.workingtree import WorkingTree

        if patches_list is None:

            patches_list = []

        tree, _ = WorkingTree.open_containing(".")

        if tree.basis_tree().changes_from(tree).has_changed() and not force:

            raise UncommittedChanges(tree)

        tree.lock_write()

        try:

            for patch in patches_list:

                f = open(patch, 'r')

                try:

                    self._apply_patch(tree, f, signoff=signoff)

                finally:

                    f.close()

        finally:

            tree.unlock()