1#!/usr/bin/env python3
2
3# Copyright 2020 JUUL Labs
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#     http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17import argparse
18import os.path
19try:
20    import tomllib
21except ModuleNotFoundError:
22    import tomli as tomllib
23
24parser = argparse.ArgumentParser(description='Print features from a Cargo.toml.')
25parser.add_argument('infile', help='Input file to parse')
26
27args = parser.parse_args()
28if not os.path.isfile(args.infile):
29    print("File not found")
30    exit(1)
31
32try:
33    cargo_toml = open(args.infile).read()
34except Exception:
35    print("Error reading \"{}\"".format(args.infile))
36    exit(1)
37
38config = tomllib.loads(cargo_toml)
39if 'features' not in config:
40    print("Missing \"[features]\" section")
41    exit(1)
42
43print(" ".join([k for k in config['features'] if k != 'default']))
44