~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005 by Aaron Bentley

# 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

# TODO: Move this into builtins

# TODO: 'bzr resolve' should accept a directory name and work from that 

# point down

# TODO: bzr revert should resolve; even when reverting the whole tree

# or particular directories

import os

import errno

import bzrlib.status

from bzrlib.commands import register_command

from bzrlib.errors import BzrCommandError, NotConflicted

from bzrlib.option import Option

from bzrlib.workingtree import CONFLICT_SUFFIXES, WorkingTree

from bzrlib.osutils import rename

class cmd_conflicts(bzrlib.commands.Command):

    """List files with conflicts.

    Merge will do its best to combine the changes in two branches, but there

    are some kinds of problems only a human can fix.  When it encounters those,

    it will mark a conflict.  A conflict means that you need to fix something,

    before you should commit.

    Use bzr resolve when you have fixed a problem.

    (conflicts are determined by the presence of .BASE .TREE, and .OTHER 

    files.)

    See also bzr resolve.

    """

    def run(self):

        for path in WorkingTree.open_containing(u'.')[0].iter_conflicts():

            print path

class cmd_resolve(bzrlib.commands.Command):

    """Mark a conflict as resolved.

    Merge will do its best to combine the changes in two branches, but there

    are some kinds of problems only a human can fix.  When it encounters those,

    it will mark a conflict.  A conflict means that you need to fix something,

    before you should commit.

    Once you have fixed a problem, use "bzr resolve FILE.." to mark

    individual files as fixed, or "bzr resolve --all" to mark all conflicts as

    resolved.

    See also bzr conflicts.

    """

    aliases = ['resolved']

    takes_args = ['file*']

    takes_options = [Option('all', help='Resolve all conflicts in this tree')]

    def run(self, file_list=None, all=False):

        if file_list is None:

            if not all:

                raise BzrCommandError(

                    "command 'resolve' needs one or more FILE, or --all")

            tree = WorkingTree.open_containing(u'.')[0]

            file_list = list(tree.abspath(f) for f in tree.iter_conflicts())

        else:

            if all:

                raise BzrCommandError(

                    "If --all is specified, no FILE may be provided")

        for filename in file_list:

            failures = 0

            for suffix in CONFLICT_SUFFIXES:

                try:

                    os.unlink(filename+suffix)

                except OSError, e:

                    if e.errno != errno.ENOENT:

                        raise

                    else:

                        failures += 1

            if failures == len(CONFLICT_SUFFIXES):

                if not os.path.exists(filename):

                    print "%s does not exist" % filename

                else:

                    print "%s is not conflicted" % filename

def restore(filename):

    """\

    Restore a conflicted file to the state it was in before merging.

    Only text restoration supported at present.

    """

    conflicted = False

    try:

        rename(filename + ".THIS", filename)

        conflicted = True

    except OSError, e:

        if e.errno != errno.ENOENT:

            raise

    try:

        os.unlink(filename + ".BASE")

        conflicted = True

    except OSError, e:

        if e.errno != errno.ENOENT:

            raise

    try:

        os.unlink(filename + ".OTHER")

        conflicted = True

    except OSError, e:

        if e.errno != errno.ENOENT:

            raise

    if not conflicted:

        raise NotConflicted(filename)