Class CMakeCache

tools/cmake/cmake_cache.py:20–57

@dataclass
class CMakeCache:
    # The path to the CMakeCache.txt file.
    cache_path: str

    def __post_init__(self):
        self.cache = CMakeCache.read_cmake_cache(cache_path=self.cache_path)

    def get(self, var: str) -> Optional[CacheValue]:
        return self.cache.get(var)

    def is_enabled(self, var: str, fallback: bool = False) -> bool:
        definition = self.get(var)
        if definition is None:
            return fallback
        return CMakeCache._is_truthy(definition.value)

    @staticmethod
    def _is_truthy(value: Optional[str]) -> bool:
        if (value is None) or (value.lower().strip() in _FALSE_VALUES):
            return False
        return True

    @staticmethod
    def read_cmake_cache(cache_path: str) -> Dict[str, CacheValue]:
        result = {}
        with open(cache_path, "r") as cache_file:
            for line in cache_file:
                line = line.strip()
                if "=" in line:
                    key, value = line.split("=", 1)
                    value_type = ""
                    if ":" in key:
                        key, value_type = key.split(":")
                    result[key.strip()] = CacheValue(
                        value_type=value_type,
                        value=value.strip(),
                    )
        return result