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# -*- coding: utf-8 -*-
"""
pygments.util
~~~~~~~~~~~~
Utility functions.
:copyright: 2006 by Georg Brandl.
:license: GNU LGPL, see LICENSE for more details.
"""
class OptionError(Exception):
pass
def get_bool_opt(options, optname, default=None):
string = options.get(optname, default)
if isinstance(string, bool):
return string
elif string.lower() in ('1', 'yes', 'true', 'on'):
return True
elif string.lower() in ('0', 'no', 'false', 'off'):
return False
else:
raise OptionError('Invalid value %r for option %s; use '
'1/0, yes/no, true/false, on/off' %
string, optname)
def get_int_opt(options, optname, default=None):
string = options.get(optname, default)
try:
return int(string)
except ValueError:
raise OptionError('Invalid value %r for option %s; you '
'must give an integer value' %
string, optname)
def get_list_opt(options, optname, default=None):
val = options.get(optname, default)
if isinstance(val, basestring):
return val.split()
elif isinstance(val, (list, tuple)):
return list(val)
else:
raise OptionError('Invalid value %r for option %s; you '
'must give a list value' %
val, optname)
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