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
19import toml
20
21parser = argparse.ArgumentParser(description='Print features from a Cargo.toml.')
22parser.add_argument('infile', help='Input file to parse')
23
24args = parser.parse_args()
25if not os.path.isfile(args.infile):
26    print("File not found")
27    exit(1)
28
29try:
30    cargo_toml = open(args.infile).read()
31except Exception:
32    print("Error reading \"{}\"".format(args.infile))
33    exit(1)
34
35config = toml.loads(cargo_toml)
36if 'features' not in config:
37    print("Missing \"[features]\" section")
38    exit(1)
39
40print(" ".join([k for k in config['features'] if k != 'default']))
41