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# Copyright (C) 2013 Linaro Limited
#
# Author: Milo Casagrande <milo.casagrande@linaro.org>
#
# This file is part of lava-tool.
#
# lava-tool is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation
#
# lava-tool 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 Lesser General Public License
# along with lava-tool. If not, see <http://www.gnu.org/licenses/>.
"""
Device specific commands class.
"""
import os
import sys
from lava.device import get_known_device
from lava.helper.command import (
BaseCommand,
)
from lava.helper.dispatcher import (
get_device_file,
get_devices_path,
)
from lava.tool.command import CommandGroup
from lava.tool.errors import CommandError
from lava_tool.utils import (
can_edit_file,
edit_file,
)
DEVICE_FILE_SUFFIX = "conf"
class device(CommandGroup):
"""LAVA devices handling."""
namespace = "lava.device.commands"
class add(BaseCommand):
"""Adds a new device."""
@classmethod
def register_arguments(cls, parser):
super(add, cls).register_arguments(parser)
parser.add_argument("DEVICE", help="The name of the device to add.")
def invoke(self):
real_file_name = ".".join([self.args.DEVICE, DEVICE_FILE_SUFFIX])
if get_device_file(real_file_name) is not None:
print >> sys.stdout, ("A device configuration file named '{0}' "
"already exists.".format(real_file_name))
print >> sys.stdout, ("Use 'lava device config {0}' to edit "
"it.".format(self.args.DEVICE))
sys.exit(-1)
devices_path = get_devices_path()
device_conf_file = os.path.abspath(os.path.join(devices_path,
real_file_name))
device = get_known_device(self.args.DEVICE)
device.update(self.config)
device.write(device_conf_file)
print >> sys.stdout, ("Created device file '{0}' in: {1}".format(
real_file_name, devices_path))
edit_file(device_conf_file)
class remove(BaseCommand):
"""Removes the specified device."""
@classmethod
def register_arguments(cls, parser):
super(remove, cls).register_arguments(parser)
parser.add_argument("DEVICE",
help="The name of the device to remove.")
def invoke(self):
real_file_name = ".".join([self.args.DEVICE, DEVICE_FILE_SUFFIX])
device_conf = get_device_file(real_file_name)
if device_conf:
try:
os.remove(device_conf)
print >> sys.stdout, ("Device configuration file '{0}' "
"removed.".format(real_file_name))
except OSError:
raise CommandError("Cannot remove file '{0}' at: {1}.".format(
real_file_name, os.path.dirname(device_conf)))
else:
print >> sys.stdout, ("No device configuration file '{0}' "
"found.".format(real_file_name))
class config(BaseCommand):
"""Opens the specified device config file."""
@classmethod
def register_arguments(cls, parser):
super(config, cls).register_arguments(parser)
parser.add_argument("DEVICE",
help="The name of the device to edit.")
def invoke(self):
real_file_name = ".".join([self.args.DEVICE, DEVICE_FILE_SUFFIX])
device_conf = get_device_file(real_file_name)
if device_conf and can_edit_file(device_conf):
edit_file(device_conf)
else:
raise CommandError("Cannot edit file '{0}'".format(real_file_name))
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