def _select_pragma_version(pragma_string, version_list):
comparator_set_range = pragma_string.replace(" ", "").split("||")
comparator_regex = re.compile(r"(([<>]?=?|\^)\d+\.\d+\.\d+)+")
version = None
for comparator_set in comparator_set_range:
spec = SimpleSpec(*(i[0] for i in comparator_regex.findall(comparator_set)))
selected = spec.select(version_list)
if selected and (not version or version < selected):
version = selected
if version:
return str(version)
def resolve_ca_version(self, version):
# Determine if the version is just a version, and return it if so.
version_pattern = re.compile('^\\d+\\.\\d+\\.\\d+(?:-\\d+)?$')
if version_pattern.match(version):
return version
# Ensure we have semantic versioning support.
if not HAS_SEMANTIC_VERSION:
raise Exception(missing_required_lib('semantic_version')) from SEMANTIC_VERSION_IMPORT_ERR
# Get the list of possible versions.
all_ca_versions = self.get_all_ca_versions()
# Select the best possible version.
s = SimpleSpec(version)
versions = map(Version, all_ca_versions)
result = s.select(versions)
# Ensure we selected a valid version.
if result is None:
raise Exception(f'Unable to resolve certificate authority version {version} from available versions {all_ca_versions}')
return str(result)
