def _parse_string_as_bool(self, bool_string):
"""
'private' function performing parse of a string containing
a bool representation as defined in the parameter set/otdb
implementation
"""
true_chars = ['t', 'T', 'y', 'Y', '1']
false_chars = ['f', 'F', 'n', 'N', '0']
if bool_string[0] in true_chars:
return True
if bool_string[0] in false_chars:
return False
raise tcError(
"Supplied string cannot be parsed as a bool: {0}".format(bool_string))
def set_opts(self, opts):
"""Set multiple variables at once.
opts should be dictionary of name->value
"""
opts = dict(opts)
for k, v in opts.iteritems():
try:
# Fix for lofar parameter set integration:
# If the attribute is a bool, test if it is a string.
# and then try to parse it
if hasattr(self, k):
if isinstance(self.__getattribute__(k), bool):
if isinstance(v, bool) or v == None:
# just enter the bool into the parameter
pass
elif isinstance(v, basestring):
# Try parse it as a parameter set bool string
v = self._parse_string_as_bool(v)
else:
# raise error
raise tcError("unknown type for bool variable")
if k == 'sb':
# quick check on the sb sintax
import re
def sb_re(strg):
return bool(re.match("^[0-9,.]*$", strg))
if not sb_re(v): raise RuntimeError('Parameter "{0}" is not defined properly.'.format(k))
if v == "none":
v = None
self.__setattr__(k, v)
except tcError, e:
# Catch and re-raise as a RuntimeError
raise RuntimeError('Parameter "{0}" is not defined properly.\
\n {1}'.format(k, str(e)))
