# 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 __future__ import print_function

import sys

from distutils.command.build_ext import build_ext
from distutils.errors import CCompilerError, DistutilsExecError, \
 DistutilsPlatformError

import setuptools

VERSION = "unknown"

try:
 # Try to set the version from the generated ovs/version.py
 exec(open("ovs/version.py").read())
except IOError:
 print("Ensure version.py is created by running make python/ovs/version.py",
 file=sys.stderr)
 sys.exit(-1)

ext_errors = (CCompilerError, DistutilsExecError, DistutilsPlatformError)
if sys.platform == 'win32':
 ext_errors += (IOError, ValueError)


class BuildFailed(Exception):
 pass


class try_build_ext(build_ext):
 # This class allows C extension building to fail
 # NOTE: build_ext is not a new-style class

 def run(self):
 try:
 build_ext.run(self)
 except DistutilsPlatformError:
 raise BuildFailed()

 def build_extension(self, ext):
 try:
 build_ext.build_extension(self, ext)
 except ext_errors:
 raise BuildFailed()


setup_args = dict(
 name='ovs',
 description='Open vSwitch library',
 version=VERSION,
 url='http://www.openvswitch.org/',
 author='Open vSwitch',
 author_email='dev@openvswitch.org',
 packages=['ovs', 'ovs.compat', 'ovs.compat.sortedcontainers',
 'ovs.db', 'ovs.unixctl'],
 keywords=['openvswitch', 'ovs', 'OVSDB'],
 license='Apache 2.0',
 classifiers=[
 'Development Status :: 5 - Production/Stable',
 'Topic :: Database :: Front-Ends',
 'Topic :: Software Development :: Libraries :: Python Modules',
 'Topic :: System :: Networking',
 'License :: OSI Approved :: Apache Software License',
 'Programming Language :: Python :: 2',
 'Programming Language :: Python :: 2.7',
 'Programming Language :: Python :: 3',
 'Programming Language :: Python :: 3.4',
 'Programming Language :: Python :: 3.5',
 ],
 ext_modules=[setuptools.Extension("ovs._json", sources=["ovs/_json.c"],
 libraries=['openvswitch'])],
 cmdclass={'build_ext': try_build_ext},
 install_requires=['sortedcontainers'],
 extras_require={':sys_platform == "win32"': ['pywin32 >= 1.0']},
)

try:
 setuptools.setup(**setup_args)
except BuildFailed:
 BUILD_EXT_WARNING = ("WARNING: The C extension could not be compiled, "
 "speedups are not enabled.")
 print("*" * 75)
 print(BUILD_EXT_WARNING)
 print("Failure information, if any, is above.")
 print("Retrying the build without the C extension.")
 print("*" * 75)

 del(setup_args['cmdclass'])
 del(setup_args['ext_modules'])
 setuptools.setup(**setup_args)