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# Copyright
class Completer (object):
def __init__(self, options):
self.options = options
def __call__(self, bugdir, fragment=None):
return [fragment]
def complete_status(bugdir, fragment=None):
return [fragment]
def complete_severity(bugdir, fragment=None):
return [fragment]
def complete_assigned(bugdir, fragment=None):
return [fragment]
def complete_extra_strings(bugdir, fragment=None):
return [fragment]
def select_values(string, possible_values, name="unkown"):
"""
This function allows the user to select values from a list of
possible values. The default is to select all the values:
>>> select_values(None, ['abc', 'def', 'hij'])
['abc', 'def', 'hij']
The user selects values with a comma-separated limit_string.
Prepending a minus sign to such a list denotes blacklist mode:
>>> select_values('-abc,hij', ['abc', 'def', 'hij'])
['def']
Without the leading -, the selection is in whitelist mode:
>>> select_values('abc,hij', ['abc', 'def', 'hij'])
['abc', 'hij']
In either case, appropriate errors are raised if on of the
user-values is not in the list of possible values. The name
parameter lets you make the error message more clear:
>>> select_values('-xyz,hij', ['abc', 'def', 'hij'], name="foobar")
Traceback (most recent call last):
...
UserError: Invalid foobar xyz
['abc', 'def', 'hij']
>>> select_values('xyz,hij', ['abc', 'def', 'hij'], name="foobar")
Traceback (most recent call last):
...
UserError: Invalid foobar xyz
['abc', 'def', 'hij']
"""
possible_values = list(possible_values) # don't alter the original
if string == None:
pass
elif string.startswith('-'):
blacklisted_values = set(string[1:].split(','))
for value in blacklisted_values:
if value not in possible_values:
raise UserError('Invalid %s %s\n %s'
% (name, value, possible_values))
possible_values.remove(value)
else:
whitelisted_values = string.split(',')
for value in whitelisted_values:
if value not in possible_values:
raise UserError('Invalid %s %s\n %s'
% (name, value, possible_values))
possible_values = whitelisted_values
return possible_values
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