| # SPDX-License-Identifier: GPL-2.0 |
| # |
| # Builds a .config from a kunitconfig. |
| # |
| # Copyright (C) 2019, Google LLC. |
| # Author: Felix Guo <felixguoxiuping@gmail.com> |
| # Author: Brendan Higgins <brendanhiggins@google.com> |
| |
| import collections |
| import re |
| |
| CONFIG_IS_NOT_SET_PATTERN = r'^# CONFIG_\w+ is not set$' |
| CONFIG_PATTERN = r'^CONFIG_\w+=\S+$' |
| |
| KconfigEntryBase = collections.namedtuple('KconfigEntry', ['raw_entry']) |
| |
| |
| class KconfigEntry(KconfigEntryBase): |
| |
| def __str__(self) -> str: |
| return self.raw_entry |
| |
| |
| class KconfigParseError(Exception): |
| """Error parsing Kconfig defconfig or .config.""" |
| |
| |
| class Kconfig(object): |
| """Represents defconfig or .config specified using the Kconfig language.""" |
| |
| def __init__(self): |
| self._entries = [] |
| |
| def entries(self): |
| return set(self._entries) |
| |
| def add_entry(self, entry: KconfigEntry) -> None: |
| self._entries.append(entry) |
| |
| def is_subset_of(self, other: 'Kconfig') -> bool: |
| return self.entries().issubset(other.entries()) |
| |
| def write_to_file(self, path: str) -> None: |
| with open(path, 'w') as f: |
| for entry in self.entries(): |
| f.write(str(entry) + '\n') |
| |
| def parse_from_string(self, blob: str) -> None: |
| """Parses a string containing KconfigEntrys and populates this Kconfig.""" |
| self._entries = [] |
| is_not_set_matcher = re.compile(CONFIG_IS_NOT_SET_PATTERN) |
| config_matcher = re.compile(CONFIG_PATTERN) |
| for line in blob.split('\n'): |
| line = line.strip() |
| if not line: |
| continue |
| elif config_matcher.match(line) or is_not_set_matcher.match(line): |
| self._entries.append(KconfigEntry(line)) |
| elif line[0] == '#': |
| continue |
| else: |
| raise KconfigParseError('Failed to parse: ' + line) |
| |
| def read_from_file(self, path: str) -> None: |
| with open(path, 'r') as f: |
| self.parse_from_string(f.read()) |