#
# Copyright (C) 2008 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from command import PagedCommand


class Diff(PagedCommand):
    common = True
    helpSummary = "Show changes between commit and working tree"
    helpUsage = """
%prog [<project>...]

The -u option causes '%prog' to generate diff output with file paths
relative to the repository root, so the output can be applied
to the Unix 'patch' command.
"""

    def _Options(self, p):
        def cmd(option, opt_str, value, parser):
            setattr(parser.values, option.dest, list(parser.rargs))
            while parser.rargs:
                del parser.rargs[0]

        p.add_option('-u', '--absolute',
                     dest='absolute', action='store_true',
                     help='Paths are relative to the repository root')

    def Execute(self, opt, args):
        for project in self.GetProjects(args):
            project.PrintWorkTreeDiff(opt.absolute)
