openstack/renderspec
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Initial version of renderspec

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renderspec
==========
renderspec is a tool to convert a .spec.j2 Jinja2 template to
a rpm .spec file which is usable for different distributions
and follow their policies and processes.
For more information about the OpenStack rpm packaging initiative, please
follow the link to the wiki page:
https://wiki.openstack.org/wiki/Rpm-packaging
In the unfortunate event that bugs are discovered, they should
be reported to the appropriate bug tracker. If you obtained
the software from a 3rd party operating system vendor, it is
often wise to use their own bug tracker for reporting problems.
In all other cases use the master OpenStack bug tracker,
available at:
https://bugs.launchpad.net/renderspec
Developers wishing to work on renderspec should always base
their work on the latest code, available from the master GIT
repository at:
https://git.openstack.org/cgit/openstack/renderspec
Developers should also join the discussion on the mailing list,
at:
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
or join the IRC channel on
http://webchat.freenode.net/?channels=openstack-rpm-packaging

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#!/usr/bin/python
# Copyright (c) 2015 SUSE Linux GmbH
#
# 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 argparse
import os
import platform
from jinja2 import Environment, FileSystemLoader
###############
# jinja2 filter
###############
def _filter_noop(value):
"""do nothing filter"""
return value
def _filter_license_spdx2fedora(value):
"""convert a given known spdx license to another one"""
# more values can be taken from from https://github.com/hughsie/\
# appstream-glib/blob/master/libappstream-builder/asb-package-rpm.c#L76
mapping = {
"Apache-1.1": "ASL 1.1",
"Apache-2.0": "ASL 2.0",
"BSD-3-Clause": "BSD",
"GPL-1.0+": "GPL+",
"GPL-2.0": "GPLv2",
"GPL-2.0+": "GPLv2+",
"GPL-3.0": "GPLv3",
"GPL-3.0+": "GPLv3+",
"LGPL-2.1": "LGPLv2.1",
"LGPL-2.1+": "LGPLv2+",
"LGPL-2.0": "LGPLv2 with exceptions",
"LGPL-2.0+": "LGPLv2+ with exceptions",
"LGPL-3.0": "LGPLv3",
"LGPL-3.0+": "LGPLv3+",
"MIT": "MIT with advertising",
"MPL-1.0": "MPLv1.0",
"MPL-1.1": "MPLv1.1",
"MPL-2.0": "MPLv2.0",
"Python-2.0": "Python",
}
return mapping[value]
def _filter_pypackname(value):
# FIXME(toabctl): use pymod2pkg when it supports SUSE and Fedora
return "python-%s" % (value)
def generate_spec(spec_style, input_template_path):
"""generate a spec file with the given style and the given template"""
env = Environment(loader=FileSystemLoader(
os.path.dirname(input_template_path)))
# register dist specific filter
if spec_style == 'suse':
env.filters['license_normalize'] = _filter_noop
elif spec_style == 'fedora':
env.filters['license_normalize'] = _filter_license_spdx2fedora
else:
raise Exception("Unknown spec style '%s' given" % (spec_style))
# common filters
env.filters['pypackname_normalize'] = _filter_pypackname
template = env.get_template(os.path.basename(input_template_path))
return template.render()
def _get_default_distro():
distname, version, id_ = platform.linux_distribution()
if "suse" in distname.lower():
return "suse"
elif "fedora" in distname.lower():
return "fedora"
else:
return "unknown"
def process_args():
distro = _get_default_distro()
parser = argparse.ArgumentParser(
description="Convert a .spec.j2 template into a .spec")
parser.add_argument("-o", "--output",
help="output filename instead of stdout")
parser.add_argument("--spec-style", help="distro style you want to use. "
"default: %s" % (distro), default=distro,
choices=['suse', 'fedora'])
parser.add_argument("input-template",
help="specfile jinja2 template to use")
return vars(parser.parse_args())
def main():
args = process_args()
spec = generate_spec(args['spec_style'], args['input-template'])
if args['output']:
with open(args['output'], "w") as o:
o.write(spec)
else:
print(spec)
if __name__ == '__main__':
main()