mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-12-27 06:07:14 +01:00
97 lines
3.1 KiB
Python
97 lines
3.1 KiB
Python
# MIT License
|
|
#
|
|
# Copyright The SCons Foundation
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining
|
|
# a copy of this software and associated documentation files (the
|
|
# "Software"), to deal in the Software without restriction, including
|
|
# without limitation the rights to use, copy, modify, merge, publish,
|
|
# distribute, sublicense, and/or sell copies of the Software, and to
|
|
# permit persons to whom the Software is furnished to do so, subject to
|
|
# the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included
|
|
# in all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
|
|
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
|
|
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
"""Variable type for true/false Variables.
|
|
|
|
Usage example::
|
|
|
|
opts = Variables()
|
|
opts.Add(BoolVariable('embedded', 'build for an embedded system', 0))
|
|
...
|
|
if env['embedded'] == 1:
|
|
...
|
|
"""
|
|
|
|
from typing import Tuple, Callable
|
|
|
|
import SCons.Errors
|
|
|
|
__all__ = ['BoolVariable',]
|
|
|
|
TRUE_STRINGS = ('y', 'yes', 'true', 't', '1', 'on' , 'all')
|
|
FALSE_STRINGS = ('n', 'no', 'false', 'f', '0', 'off', 'none')
|
|
|
|
|
|
def _text2bool(val) -> bool:
|
|
"""Converts strings to True/False.
|
|
|
|
If *val* looks like it expresses a bool-like value, based on
|
|
the :data:`TRUE_STRINGS` and :data:`FALSE_STRINGS` tuples,
|
|
return the appropriate value.
|
|
|
|
This is usable as a converter function for SCons Variables.
|
|
|
|
Raises:
|
|
ValueError: if the string cannot be converted.
|
|
"""
|
|
|
|
lval = val.lower()
|
|
if lval in TRUE_STRINGS:
|
|
return True
|
|
if lval in FALSE_STRINGS:
|
|
return False
|
|
raise ValueError("Invalid value for boolean option: %s" % val)
|
|
|
|
|
|
def _validator(key, val, env) -> None:
|
|
"""Validates the given value to be either true or false.
|
|
|
|
This is usable as a validator function for SCons Variables.
|
|
|
|
Raises:
|
|
KeyError: if key is not set in env
|
|
UserError: if key does not validate.
|
|
"""
|
|
if not env[key] in (True, False):
|
|
raise SCons.Errors.UserError(
|
|
'Invalid value for boolean option %s: %s' % (key, env[key])
|
|
)
|
|
|
|
|
|
def BoolVariable(key, help, default) -> Tuple[str, str, str, Callable, Callable]:
|
|
"""Return a tuple describing a boolean SCons Variable.
|
|
|
|
The input parameters describe a boolean option. Returns a tuple
|
|
including the correct converter and validator.
|
|
The *help* text will have ``(yes|no)`` automatically appended to show the
|
|
valid values. The result is usable as input to :meth:`Add`.
|
|
"""
|
|
help = '%s (yes|no)' % help
|
|
return (key, help, default, _validator, _text2bool)
|
|
|
|
# Local Variables:
|
|
# tab-width:4
|
|
# indent-tabs-mode:nil
|
|
# End:
|
|
# vim: set expandtab tabstop=4 shiftwidth=4:
|