1#!/usr/bin/env python 2 3# 4# Copyright (C) 2024 The Android Open Source Project 5# 6# Licensed under the Apache License, Version 2.0 (the "License"); 7# you may not use this file except in compliance with the License. 8# You may obtain a copy of the License at 9# 10# http://www.apache.org/licenses/LICENSE-2.0 11# 12# Unless required by applicable law or agreed to in writing, software 13# distributed under the License is distributed on an "AS IS" BASIS, 14# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15# See the License for the specific language governing permissions and 16# limitations under the License. 17# 18 19"""Build commandline arguments.""" 20 21import argparse 22import dataclasses 23from typing import Callable 24 25from alias_builder import Alias 26from alias_builder import parse_aliases_from_json 27from fallback_builder import FallbackEntry 28from fallback_builder import parse_fallback_from_json 29from family_builder import Family 30from family_builder import parse_families_from_json 31 32 33@dataclasses.dataclass 34class CommandlineArgs: 35 outfile: str 36 fallback: [FallbackEntry] 37 aliases: [Alias] 38 families: [Family] 39 40 41def _create_argument_parser() -> argparse.ArgumentParser: 42 """Create argument parser.""" 43 parser = argparse.ArgumentParser() 44 parser.add_argument('-o', '--output') 45 parser.add_argument('--alias') 46 parser.add_argument('--fallback') 47 return parser 48 49 50def _fileread(path: str) -> str: 51 with open(path, 'r') as f: 52 return f.read() 53 54 55def parse_commandline( 56 args: [str], fileread: Callable[str, str] = _fileread 57) -> CommandlineArgs: 58 """Parses command line arguments and returns CommandlineArg.""" 59 parser = _create_argument_parser() 60 args, inputs = parser.parse_known_args(args) 61 62 families = [] 63 for i in inputs: 64 families = families + parse_families_from_json(fileread(i)) 65 66 return CommandlineArgs( 67 outfile=args.output, 68 fallback=parse_fallback_from_json(fileread(args.fallback)), 69 aliases=parse_aliases_from_json(fileread(args.alias)), 70 families=families, 71 ) 72