def optionvars(name, default=None):
"""Access arbitrary data from rez config setting 'optionvars'.
Args:
name (str): Name of the optionvar. Use dot notation for values in
nested dicts.
default (object): Default value if setting is missing.
"""
value = config.optionvars or {}
parts = name.split('.')
for i, key in enumerate(parts):
if not isinstance(value, dict):
raise RexError("Optionvar %r is invalid because %r is not a dict" %
(name, '.'.join(parts[:i])))
value = value.get(key, KeyError)
if value is KeyError:
return default
return value
def disallow(cls, value):
if isinstance(value, cls):
raise RexError(
"The command does not accept use of 'literal' or 'expandable'")
return value