/brz/remove-bazaar

#    __init__.py -- Quilt support for breezy

#

#    Breezy 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.

#

#    Breezy 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 Breezy; if not, write to the Free Software

#    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

#

"""Quilt patch integration.

This plugin adds support for three configuration options:

 * quilt.commit_policy

 * quilt.smart_merge

 * quilt.tree_policy

"""

from ...errors import BzrError

from ... import trace

class QuiltUnapplyError(BzrError):

    _fmt = ("Unable to unapply quilt patches for %(kind)r tree: %(msg)s")

    def __init__(self, kind, msg):

        BzrError.__init__(self)

        self.kind = kind

        if msg is not None and msg.count("\n") == 1:

            msg = msg.strip()

        self.msg = msg

def pre_merge_quilt(merger):

    if getattr(merger, "_no_quilt_unapplying", False):

        return

    config = merger.working_tree.get_config_stack()

    merger.debuild_config = config

    if not config.get('quilt.smart_merge'):

        trace.mutter("skipping smart quilt merge, not enabled.")

        return

    if (not merger.other_tree.is_versioned(".pc") and

            not merger.this_tree.is_versioned(".pc") and

            not merger.working_tree.is_versioned(".pc")):

        return

    from .quilt import QuiltPatches, QuiltError

    quilt = QuiltPatches(merger.working_tree)

    from .merge import tree_unapply_patches

    trace.note("Unapplying quilt patches to prevent spurious conflicts")

    merger._quilt_tempdirs = []

    merger._old_quilt_series = quilt.series()

    if merger._old_quilt_series:

        quilt.pop_all()

    try:

        merger.this_tree, this_dir = tree_unapply_patches(

            merger.this_tree, merger.this_branch, force=True)

    except QuiltError as e:

        raise QuiltUnapplyError("this", e.stderr)

    else:

        if this_dir is not None:

            merger._quilt_tempdirs.append(this_dir)

    try:

        merger.base_tree, base_dir = tree_unapply_patches(

            merger.base_tree, merger.this_branch, force=True)

    except QuiltError as e:

        raise QuiltUnapplyError("base", e.stderr)

    else:

        if base_dir is not None:

            merger._quilt_tempdirs.append(base_dir)

    other_branch = getattr(merger, "other_branch", None)

    if other_branch is None:

        other_branch = merger.this_branch

    try:

        merger.other_tree, other_dir = tree_unapply_patches(

            merger.other_tree, other_branch, force=True)

    except QuiltError as e:

        raise QuiltUnapplyError("other", e.stderr)

    else:

        if other_dir is not None:

            merger._quilt_tempdirs.append(other_dir)

def post_merge_quilt_cleanup(merger):

    import shutil

    for dir in getattr(merger, "_quilt_tempdirs", []):

        shutil.rmtree(dir)

    config = merger.working_tree.get_config_stack()

    policy = config.get('quilt.tree_policy')

    if policy is None:

        return

    from .merge import post_process_quilt_patches

    post_process_quilt_patches(

        merger.working_tree,

        getattr(merger, "_old_quilt_series", []), policy)

def start_commit_check_quilt(tree):

    """start_commit hook which checks the state of quilt patches.

    """

    config = tree.get_config_stack()

    policy = config.get('quilt.commit_policy')

    from .merge import start_commit_quilt_patches

    from .wrapper import QuiltNotInstalled

    try:

        start_commit_quilt_patches(tree, policy)

    except QuiltNotInstalled:

        trace.warning(

            'quilt not installed; not updating patches')

def post_build_tree_quilt(tree):

    config = tree.get_config_stack()

    policy = config.get('quilt.tree_policy')

    if policy is None:

        return

    from .merge import post_process_quilt_patches

    from .wrapper import QuiltNotInstalled

    try:

        post_process_quilt_patches(tree, [], policy)

    except QuiltNotInstalled:

        trace.warning(

            'quilt not installed; not touching patches')

from ...hooks import install_lazy_named_hook

install_lazy_named_hook(

    "breezy.merge", "Merger.hooks",

    'pre_merge_quilt', pre_merge_quilt,

    'Quilt patch (un)applying')

install_lazy_named_hook(

    "breezy.mutabletree", "MutableTree.hooks",

    "start_commit", start_commit_check_quilt,

    "Check for (un)applied quilt patches")

install_lazy_named_hook(

    "breezy.merge", "Merger.hooks",

    'post_merge', post_merge_quilt_cleanup,

    'Cleaning up quilt temporary directories')

install_lazy_named_hook(

    "breezy.mutabletree", "MutableTree.hooks",

    'post_build_tree', post_build_tree_quilt,

    'Applying quilt patches.')

from ...config import option_registry, Option, bool_from_store

option_registry.register(

    Option('quilt.smart_merge', default=True, from_unicode=bool_from_store,

           help="Unapply quilt patches before merging."))

def policy_from_store(s):

    if s not in ('applied', 'unapplied'):

        raise ValueError('Invalid quilt.commit_policy: %s' % s)

    return s

option_registry.register(

    Option('quilt.commit_policy', default=None, from_unicode=policy_from_store,

           help="Whether to apply or unapply all patches in commits."))

option_registry.register(

    Option('quilt.tree_policy', default=None, from_unicode=policy_from_store,

           help="Whether to apply or unapply all patches after checkout/update."))

def load_tests(loader, basic_tests, pattern):

    basic_tests.addTest(

        loader.loadTestsFromModuleNames([__name__ + '.tests']))

    return basic_tests