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#!/usr/bin/env python3

# Licensed to the Apache Software Foundation (ASF) under one

# or more contributor license agreements. See the NOTICE file

# distributed with this work for additional information

# regarding copyright ownership. The ASF licenses this file

# to you 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.

"""Validate that the C++ build tree required by the Python module exists.

The Python module links against the native library produced by the ``cpp``

module. When the two are built together (``-Pwith-python``) the artifacts are

always present. When the Python module is built on its own

(``-Pwith-python-only``) they must already exist, so this check turns a late and

opaque failure inside ``setup.py`` into an early, actionable one.

"""

from __future__ import annotations

import sys

from pathlib import Path

def missing_parts(build_root: Path) -> list[Path]:

"""Return the required subdirectories of *build_root* that are absent."""

return [

part

for part in (build_root / "include", build_root / "lib")

if not part.is_dir()

]

def main(argv: list[str]) -> int:

if len(argv) != 2:

print(f"usage: {Path(argv[0]).name} <cpp-build-root>", file=sys.stderr)

return 2

build_root = Path(argv[1]).expanduser().resolve()

missing = missing_parts(build_root)

if not missing:

return 0

print(

f"error: TsFile C++ build not found at {build_root}",

file=sys.stderr,

)

for part in missing:

print(f" missing directory: {part}", file=sys.stderr)

print(

" Run './mvnw -Pwith-cpp package' first, "

"or set -Dtsfile.cpp.build=<path>.",

file=sys.stderr,

)

return 1

if __name__ == "__main__":

raise SystemExit(main(sys.argv))