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| """Detect language via polyglot and fastlid.""" | |
| # pylint: disable= | |
| from typing import Any, Callable, List, Optional | |
| from polyglot.text import Detector | |
| import polyglot.detect.base | |
| from polyglot.detect.base import UnknownLanguage | |
| from fastlid import fastlid | |
| from logzero import logger | |
| polyglot.detect.base.logger.setLevel("ERROR") | |
| def with_func_attrs(**attrs: Any) -> Callable: | |
| """Define func_attrs.""" | |
| def with_attrs(fct: Callable) -> Callable: | |
| for key, val in attrs.items(): | |
| setattr(fct, key, val) | |
| return fct | |
| return with_attrs | |
| # @with_func_attrs(set_languages=None) | |
| # def detect(text: str) -> str: | |
| def detect(text: str, set_languages: Optional[List[str]] = None) -> str: | |
| """Detect language via polyglot and fastlid. | |
| check first with fastlid, if conf < 0.3, check with | |
| Alternative in detec_alt.py | |
| """ | |
| # if not text.strip(): return "en" | |
| fastlid.set_languages = set_languages | |
| lang, conf = fastlid(text) | |
| detect.lang_conf = lang, conf | |
| if conf >= 0.3 or lang in ["zh"]: | |
| return lang | |
| try: | |
| langs = [(elm.code[:2], elm.confidence) for elm in Detector(text).languages] | |
| detect.lang_conf = langs | |
| # lang, conf = _[0] | |
| except UnknownLanguage: | |
| if set_languages is None: | |
| def_lang = "en" | |
| else: | |
| # def_lang = set_languages[-1] | |
| def_lang = set_languages[0] | |
| logger.warning(" UnknownLanguage exception: probably snippet too short, setting to %s", def_lang) | |
| langs = [(def_lang, 0)] | |
| except Exception as exc: | |
| logger.error(exc) | |
| langs = [("en", 0)] | |
| del conf | |
| # return first enrty's lang | |
| if set_languages is None: | |
| def_lang = langs[0][0] | |
| else: | |
| def_lang = "en" | |
| # pick the first in Detector(text).languages | |
| # just to silence pyright | |
| # set_languages_: List[str] = [""] if set_languages is None else set_languages | |
| for elm in langs: | |
| if elm[0] in set_languages: # type: ignore | |
| def_lang = elm[0] | |
| break | |
| # set_languages is set | |
| if not isinstance(set_languages, (list, tuple)): | |
| logger.warning("set_languages (%s) ought to be a list/tuple") | |
| return def_lang | |