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# Copyright 2020 Google LLC
#
# 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
#
# https://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.
"""Proof of concept. License restriction."""
load("@rules_license//rules:providers.bzl", "LicenseKindInfo")
#
# License Kind: The declaration of a well known category of license, for example,
# Apache, MIT, LGPL v2. An organization may also declare its own license kinds
# that it may user privately.
#
def _license_kind_impl(ctx):
provider = LicenseKindInfo(
name = ctx.attr.name,
label = "@%s//%s:%s" % (
ctx.label.workspace_name,
ctx.label.package,
ctx.label.name,
),
conditions = ctx.attr.conditions,
)
return [provider]
_license_kind = rule(
implementation = _license_kind_impl,
attrs = {
"canonical_text": attr.label(
doc = "File containing the canonical text for this license. Must be UTF-8 encoded.",
allow_single_file = True,
),
"conditions": attr.string_list(
doc = "Conditions to be met when using software under this license." +
" Conditions are defined by the organization using this license.",
mandatory = True,
),
"url": attr.string(doc = "URL pointing to canonical license definition"),
},
)
def license_kind(name, **kwargs):
if "conditions" not in kwargs:
kwargs["conditions"] = []
_license_kind(
name = name,
applicable_licenses = [],
**kwargs
)
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