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# Copyright 2022 Google LLC. All rights reserved.
#
# 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.
"""FileFactory"""
def FileFactory(ctx, base, suffix = None):
"""Creates files with names derived from some base file
Including the name of a rule is not always enough to guarantee unique filenames. For example,
helper functions that declare their own output files may be called multiple times in the same
rule impl.
Args:
ctx: ctx
base: [File] The file to derive other filenames from
suffix: [Optional[string]] An additional suffix to differentiate declared files
Returns:
FileFactory
"""
base_name = base.basename.rsplit(".", 1)[0] + (suffix or "")
def declare_directory(suffix):
return ctx.actions.declare_directory(base_name + suffix, sibling = base)
def declare_file(suffix):
return ctx.actions.declare_file(base_name + suffix, sibling = base)
def derive(suffix):
return FileFactory(ctx, base, suffix)
return struct(
declare_directory = declare_directory,
declare_file = declare_file,
derive = derive,
)
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