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#!/usr/bin/env python
#
# Copyright (C) 2024 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""Validators commonly used."""
def check_str_or_none(d, key: str) -> str | None:
value = d.get(key)
assert value is None or isinstance(value, str), (
"%s type must be str or None." % key
)
return value
def check_str(d, key: str) -> str:
value = d.get(key)
assert isinstance(value, str), "%s type must be str." % key
return value
def check_int_or_none(d, key: str) -> int | None:
"""Chcek if the given value of key in dict is int or None."""
value = d.get(key)
if value is None:
return None
elif isinstance(value, int):
return value
elif isinstance(value, str):
try:
return int(value)
except ValueError as e:
raise AssertionError() from e
else:
raise AssertionError("%s type must be int or str or None." % key)
def check_float(d, key: str) -> float:
"""Chcek if the given value of key in dict is float."""
value = d.get(key)
if isinstance(value, float):
return value
elif isinstance(value, int):
return float(value)
elif isinstance(value, str):
try:
return float(value)
except ValueError as e:
raise AssertionError() from e
else:
raise AssertionError("Float value is expeted but it is %s" % key)
def check_weight_or_none(d, key: str) -> int | None:
value = check_int_or_none(d, key)
assert value is None or (
value >= 0 and value <= 1000
), "weight must be larger than 0 and lower than 1000."
return value
def check_priority_or_none(d, key: str) -> int | None:
value = check_int_or_none(d, key)
assert value is None or (
value >= -100 and value <= 100
), "priority must be between -100 (highest) to 100 (lowest)"
return value
def check_enum_or_none(d, key: str, enum: [str]) -> str | None:
value = check_str_or_none(d, key)
assert value is None or value in enum, "%s must be None or one of %s" % (
key,
enum,
)
return value
def check_tag(value) -> str:
if len(value) != 4 or not value.isascii():
raise AssertionError("OpenType tag must be 4 ASCII letters: %s" % value)
return value
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