Heroku/hikka/translations/core.py

92 lines
3.4 KiB
Python
Executable File

# Friendly Telegram (telegram userbot)
# Copyright (C) 2018-2021 The Authors
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import json
import logging
import telethon
from babel import negotiate_locale
from telethon.tl.types import MessageEntityHashtag
logger = logging.getLogger(__name__)
MAGIC = "#hikka_translate_pack"
class Translator:
def __init__(self, packs, languages, data_root):
self._packs = packs
self._languages = languages
self._data_root = data_root
async def init(self, client):
self._data = {}
for pack in self._packs:
try:
[message] = await client.get_messages(pack, 1)
except (ValueError, telethon.errors.rpcerrorlist.ChannelPrivateError):
# We can't access the channel
logger.warning(
"No translation pack found for %r", pack, exc_info=True
)
continue
if not message.document or not message.entities:
logger.info(
"Last message in translation pack %r has no document/entities",
pack,
)
continue
found = False
for ent in filter(
lambda x: isinstance(x, MessageEntityHashtag), message.entities
):
if (
message.message[ent.offset : ent.offset + ent.length] == MAGIC
and message.file
):
logger.debug("Got translation message")
found = True
break
if not found:
logger.info("Didn't find translation hashtags")
continue
try:
ndata = json.loads(
(await message.download_media(bytes)).decode("utf-8")
)
except (json.decoder.JSONDecodeError, UnicodeDecodeError):
logger.exception("Unable to decode %s", pack)
continue
try:
self._data.setdefault(ndata["language"], {}).update(ndata["data"])
except KeyError:
logger.exception("Translation pack follows wrong format")
def set_preferred_languages(self, languages):
self._languages = languages
def getkey(self, key, lang_code=None):
locales = []
for locale, strings in self._data.items():
if key in strings:
locales += [locale]
target_locales = [lang_code] if lang_code else self._languages
locale = negotiate_locale(target_locales, locales)
return self._data.get(locale, {}).get(key, False)
def gettext(self, english_text):
return self.getkey(english_text) or english_text