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# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 Maxim Devaev <[email protected]> #
# #
# This program is free software: you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation, either version 3 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
import re
from typing import List
from typing import Type
from typing import Callable
from typing import Optional
from typing import Union
from typing import Any
from . import ValidatorError
from . import raise_error
from . import check_not_none_string
from . import check_in_list
# =====
def valid_stripped_string(arg: Any, name: str="") -> str:
if not name:
name = "stripped string"
return check_not_none_string(arg, name)
def valid_stripped_string_not_empty(arg: Any, name: str="") -> str:
if not name:
name = "not empty stripped string"
if len(str(arg).strip()) == 0:
arg = None
return valid_stripped_string(arg, name)
def valid_bool(arg: Any) -> bool:
true_args = ["1", "true", "yes"]
false_args = ["0", "false", "no"]
name = f"bool ({true_args!r} or {false_args!r})"
arg = valid_stripped_string_not_empty(arg, name).lower()
arg = check_in_list(arg, name, true_args + false_args)
return (arg in true_args)
def valid_number(
arg: Any,
min: Union[int, float, None]=None, # pylint: disable=redefined-builtin
max: Union[int, float, None]=None, # pylint: disable=redefined-builtin
type: Union[Type[int], Type[float]]=int, # pylint: disable=redefined-builtin
name: str="",
) -> Union[int, float]:
name = (name or type.__name__)
arg = valid_stripped_string_not_empty(arg, name)
try:
arg = type(arg)
except Exception:
raise_error(arg, name)
if min is not None and arg < min:
raise ValidatorError(f"The argument '{arg}' must be {name} and greater or equial than {min}")
if max is not None and arg > max:
raise ValidatorError(f"The argument '{arg}' must be {name} and lesser or equal then {max}")
return arg
def valid_int_f1(arg: Any) -> int:
return int(valid_number(arg, min=1))
def valid_float_f0(arg: Any) -> float:
return float(valid_number(arg, min=0, type=float))
def valid_float_f01(arg: Any) -> float:
return float(valid_number(arg, min=0.1, type=float))
def valid_string_list(
arg: Any,
delim: str=r"[,\t ]+",
subval: Optional[Callable[[Any], Any]]=None,
name: str="",
) -> List[str]:
if not name:
name = "string list"
if subval is None:
subval = (lambda item: check_not_none_string(item, name + " item"))
if not isinstance(arg, (list, tuple)):
arg = check_not_none_string(arg, name)
arg = list(filter(None, re.split(delim, arg)))
if subval is not None:
try:
arg = list(map(subval, arg))
except Exception:
raise ValidatorError(f"Failed sub-validator on one of the item of {arg!r}")
return arg
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