def ValidateLanguageCode(lang, column_name=None, problems=None):
"""
Validates a non-required language code value using the pybcp47 module:
- if invalid adds InvalidValue error (if problems accumulator is provided)
- distinguishes between 'not well-formed' and 'not valid' and adds error
reasons accordingly
- an empty language code is regarded as valid! Otherwise we might end up
with many duplicate errors because of the required field checks.
- returns true if the language is valid, false if not well-formed or
invalid.
"""
if util.IsEmpty(lang):
return True
bcp47_obj = parser.ParseLanguage(str(lang.lower()))
if not bcp47_obj.wellformed:
if problems:
problems.InvalidValue(column_name,
lang,
'language code "%s" is not well-formed' %
lang,
type=problems_class.TYPE_ERROR)
return False
if not bcp47_obj.valid:
if problems:
problems.InvalidValue(
column_name,
lang,
'language code "%s" is not valid, parses as: %s' %
(lang, bcp47_obj),
type=problems_class.TYPE_WARNING)
return False
return True
def ValidateVehicleType(self, problems):
self.vehicle_type = util.ValidateAndReturnIntValue(
self.vehicle_type,
self._gtfs_factory.Route._ROUTE_TYPE_IDS,
None,
True,
"vehicle_type",
problems,
)
# Entrances must not have a vehicle type, in general google transit does not
# read vehicle types from stops with a parent station.
if self.vehicle_type:
if self.location_type == 2:
problems.InvalidValue(
"vehicle_type",
self.location_type,
reason="an entrance must not have a vehicle type",
)
elif not util.IsEmpty(self.parent_station):
problems.InvalidValue(
"vehicle_type",
self.location_type,
reason="Google Transit does not read vehicle types for stops "
"having a parent station",
type=problems_module.TYPE_WARNING,
)
def ValidateStopLocationType(self, problems):
self.location_type = util.ValidateAndReturnIntValue(
self.location_type, [0, 1, 2], 0, True, 'location_type', problems)
# Entrances must have a parent_station.
if self.location_type == 2 and util.IsEmpty(self.parent_station):
problems.InvalidValue('location_type', self.location_type,
reason='an entrance must have a parent_station')
def ValidateCo2PerKm(self, problems):
if not util.IsEmpty(self.co2_per_km):
try:
self.co2_per_km = float(self.co2_per_km)
except ValueError:
problems.InvalidValue('co2_per_km', self.co2_per_km)
def ValidateCurrencyType(self, problems):
if util.IsEmpty(self.currency_type):
problems.MissingValue("currency_type")
elif self.currency_type not in util.ISO4217.codes:
problems.InvalidValue("currency_type", self.currency_type)
def ValidateFareId(self, problems):
if util.IsEmpty(self.fare_id):
problems.MissingValue("fare_id")
