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# Copyright Mozilla Foundation
#
# 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
#
#
# 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.
from __future__ import annotations
from re import fullmatch
ANDROID_LOCALES = {"he": "iw", "id": "in", "yi": "ji"}
def get_android_locale(locale: str) -> str:
lc, *rest = locale.split("-")
if lc in ANDROID_LOCALES:
lc = ANDROID_LOCALES[lc]
if not rest:
return lc
if len(rest) == 1 and fullmatch(r"[A-Z]{2}", rest[0]):
return f"{lc}-r{rest[0]}"
return f"b+{lc}+{'+'.join(rest)}"
def parse_android_locale(alocale: str) -> str | None:
if alocale.startswith("b+"):
lc, *rest = alocale[2:].split("+")
else:
m = fullmatch(r"([a-z]{2,3})(?:-r([A-Z]{2}))?", alocale)
if m is None:
return None # Not a valid Android locale
lc = m[1]
rest = [m[2]] if m[2] else []
for current, legacy in ANDROID_LOCALES.items():
if lc == legacy:
lc = current
break
return "-".join((lc, *rest))