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# Copyright 2023 The Bazel Authors. 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.
"Implementation of py_package rule"
def _path_inside_wheel(input_file):
# input_file.short_path is sometimes relative ("../${repository_root}/foobar")
# which is not a valid path within a zip file. Fix that.
short_path = input_file.short_path
if short_path.startswith("..") and len(short_path) >= 3:
# Path separator. '/' on linux.
separator = short_path[2]
# Consume '../' part.
short_path = short_path[3:]
# Find position of next '/' and consume everything up to that character.
pos = short_path.find(separator)
short_path = short_path[pos + 1:]
return short_path
def _py_package_impl(ctx):
inputs = depset(
transitive = [dep[DefaultInfo].data_runfiles.files for dep in ctx.attr.deps] +
[dep[DefaultInfo].default_runfiles.files for dep in ctx.attr.deps],
)
# TODO: '/' is wrong on windows, but the path separator is not available in starlark.
# Fix this once ctx.configuration has directory separator information.
packages = [p.replace(".", "/") for p in ctx.attr.packages]
if not packages:
filtered_inputs = inputs
else:
filtered_files = []
# TODO: flattening depset to list gives poor performance,
for input_file in inputs.to_list():
wheel_path = _path_inside_wheel(input_file)
for package in packages:
if wheel_path.startswith(package):
filtered_files.append(input_file)
filtered_inputs = depset(direct = filtered_files)
return [DefaultInfo(
files = filtered_inputs,
)]
py_package_lib = struct(
implementation = _py_package_impl,
attrs = {
"deps": attr.label_list(
doc = "",
),
"packages": attr.string_list(
mandatory = False,
allow_empty = True,
doc = """\
List of Python packages to include in the distribution.
Sub-packages are automatically included.
""",
),
},
path_inside_wheel = _path_inside_wheel,
)
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