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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import print_function, unicode_literals
import distutils
import subprocess
class BaseBootstrapper(object):
"""Base class for system bootstrappers."""
def __init__(self, interactive=False):
self.package_manager_updated = False
self.interactive = interactive
def ensure_system_packages(self):
'''
Check for missing packages.
'''
raise NotImplementedError('%s must implement ensure_system_packages()' %
__name__)
def install_system_packages(self):
'''
Install packages required to build Servo.
'''
raise NotImplementedError('%s must implement install_system_packages()' %
__name__)
def install_mobile_android_packages(self):
'''
Install packages required to build Servo for Android.
'''
raise NotImplementedError('Cannot bootstrap Servo for Android: '
'%s does not yet implement install_mobile_android_packages()'
% __name__)
def which(self, name):
"""Python implementation of which.
It returns the path of an executable or None if it couldn't be found.
"""
return distutils.spawn.find_executable(name)
def check_output(self, *args, **kwargs):
"""Run subprocess.check_output."""
return subprocess.check_output(*args, **kwargs)
def _ensure_package_manager_updated(self):
if self.package_manager_updated:
return
self._update_package_manager()
self.package_manager_updated = True
def _update_package_manager(self):
"""Updates the package manager's manifests/package list.
This should be defined in child classes.
"""
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