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#!/usr/bin/env python3

# This script will setup a new bitbake project.  It uses the layer index
# (layers.openembedded.org or similar) to determine which components and
# their dependencies to install.

# Copyrigth (C) 2016-2017 Wind River Systems, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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

import logging
import os
import sys
import argparse
import signal

bindir = os.path.dirname(__file__)
topdir = os.path.dirname(bindir)
sys.path[0:0] = [os.path.join(topdir, 'lib')]

import bb.msg
import bb.data
import bb.parse

logger = bb.msg.logger_create('BitBake', sys.stdout, preserve_handlers=True)

def main():
    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
    parser = argparse.ArgumentParser(
        description="BitBake project setup utility",
        epilog="Use %(prog)s <subcommand> --help to get help on a specific command",
        add_help=False)

    parser.add_argument("-D", "--debug", action="count", dest="debug", default=0,
                      help="Increase the debug level. You can specify this "
                           "more than once. -D sets the debug level to 1, "
                           "where only bb.debug(1, ...) messages are printed "
                           "to stdout; -DD sets the debug level to 2, where "
                           "both bb.debug(1, ...) and bb.debug(2, ...) "
                           "messages are printed; etc. Without -D, no debug "
                           "messages are printed. Note that -D only affects "
                           "output to stdout. All debug messages are written "
                           "to ${T}/log.do_taskname, regardless of the debug "
                           "level.")

    parser.add_argument('-q', '--quiet', action="count", dest="quiet", default=0,
                        help="Output less log message data to the terminal. You can specify this more than once.")

    parser.add_argument('--color', choices=['auto', 'always', 'never'], default='auto',
                        help="Colorize output (where %(metavar)s is %(choices)s)", metavar='COLOR')

    global_args, unparsed_args = parser.parse_known_args()

    if global_args.quiet and global_args.debug:
        logger.error("options --quiet and --debug are mutually exclusive")
        return 1

    if global_args.debug:
        logger.setLevel(logging.DEBUG)
    elif global_args.quiet:
        logger.setLevel(logging.ERROR)

    bb.msg.init_msgconfig(1, global_args.debug)

    # Need to re-run logger_create with color argument
    # (will be the same logger since it has the same name)
    bb.msg.logger_create('bitbake-setup', output=sys.stdout, color=global_args.color)

    # Help is added here rather than via add_help=True, as we don't want it to
    # be handled by parse_known_args()
    parser.add_argument('-h', '--help', action='help', default=argparse.SUPPRESS,
                        help='show this help message and exit')

    # Initialize variable space...
    d = bb.data.init()
    d.setVar('PROJECTDIR', os.getcwd())
    d.setVar('DL_DIR', '${PROJECTDIR}/layer-cache')

    subparsers = parser.add_subparsers(title='subcommands', metavar='<subcommand>')
    subparsers.required = True
    plugins = []
    for path in [topdir]:
        pluginpath = os.path.join(path, 'lib', 'bbsetup')
        bb.utils.load_plugins(logger, plugins, pluginpath)

    registered = False
    for plugin in plugins:
        if hasattr(plugin, 'register_commands'):
            registered = True
            plugin.init(d)
            plugin.register_commands(subparsers)

    if not registered:
        logger.error("No commands registered - missing plugins?")
        sys.exit(1)

    parser.add_argument("config", help="setup configuration file")

    args = parser.parse_args(unparsed_args, namespace=global_args)

    d = bb.parse.handle(args.config, d, True)

    logger.debug(1, "Using indexes: %s" % (d.getVar('BBLAYERINDEX_URI')))

    return args.func(args)


if __name__ == "__main__":
    try:
        ret = main()
    except bb.BBHandledException:
        ret = 1
    except Exception:
        ret = 1
        import traceback
        traceback.print_exc()
    sys.exit(ret)