PTU5KAS/kas/context.py

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# kas - setup tool for bitbake based projects
#
# Copyright (c) Siemens AG, 2018
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
"""
This module contains the implementation of the kas context.
"""
import os
import logging
try:
import distro
def get_distro_id_base():
"""
Returns a compatible distro id.
"""
return distro.like() or distro.id()
except ImportError:
import platform
def get_distro_id_base():
"""
Wrapper around platform.dist to simulate distro.id
platform.dist is deprecated and will be removed in python 3.7
Use the 'distro' package instead.
"""
return platform.dist()[0]
__context__ = None
def create_global_context():
"""
Creates global context as singleton.
"""
global __context__
__context__ = Context()
return __context__
def get_context():
"""
Returns singleton global context.
"""
return __context__
class Context:
"""
Implements the kas build context.
"""
def __init__(self):
self.__kas_work_dir = os.environ.get('KAS_WORK_DIR', os.getcwd())
self.__kas_repo_ref_dir = os.environ.get('KAS_REPO_REF_DIR', None)
self.setup_initial_environ()
self.keep_config = False
self.config = None
def setup_initial_environ(self):
"""
Sets the environment variables for processes that are
started by kas.
"""
self.environ = {}
distro_bases = get_distro_id_base().lower().split()
for distro_base in distro_bases:
if distro_base in ['fedora', 'suse', 'opensuse']:
self.environ = {'LC_ALL': 'en_US.utf8',
'LANG': 'en_US.utf8',
'LANGUAGE': 'en_US'}
break
elif distro_base in ['debian', 'ubuntu', 'gentoo']:
self.environ = {'LC_ALL': 'en_US.UTF-8',
'LANG': 'en_US.UTF-8',
'LANGUAGE': 'en_US:en'}
break
if self.environ == {}:
logging.warning('kas: No supported distros found in %s. '
'No default locales set.', distro_bases)
for key in ['http_proxy', 'https_proxy', 'ftp_proxy', 'no_proxy',
'SSH_AUTH_SOCK']:
val = os.environ.get(key, None)
if val:
self.environ[key] = val
@property
def build_dir(self):
"""
The path to the build directory
"""
return os.path.join(self.__kas_work_dir, 'build')
@property
def kas_work_dir(self):
"""
The path to the kas work directory
"""
return self.__kas_work_dir
@property
def kas_repo_ref_dir(self):
"""
The reference directory for the repo
"""
return self.__kas_repo_ref_dir