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bazarr/libs/deep_translator/mymemory.py

114 lines
3.5 KiB

"""
mymemory translator API
"""
__copyright__ = "Copyright (C) 2020 Nidhal Baccouri"
from typing import List, Optional, Union
import requests
from deep_translator.base import BaseTranslator
from deep_translator.constants import BASE_URLS, MY_MEMORY_LANGUAGES_TO_CODES
from deep_translator.exceptions import (
RequestError,
TooManyRequests,
TranslationNotFound,
)
from deep_translator.validate import is_empty, is_input_valid, request_failed
class MyMemoryTranslator(BaseTranslator):
"""
class that uses the mymemory translator to translate texts
"""
def __init__(
self,
source: str = "auto",
target: str = "en",
proxies: Optional[dict] = None,
**kwargs,
):
"""
@param source: source language to translate from
@param target: target language to translate to
"""
self.proxies = proxies
self.email = kwargs.get("email", None)
super().__init__(
base_url=BASE_URLS.get("MYMEMORY"),
source=source,
target=target,
payload_key="q",
languages=MY_MEMORY_LANGUAGES_TO_CODES,
)
def translate(
self, text: str, return_all: bool = False, **kwargs
) -> Union[str, List[str]]:
"""
function that uses the mymemory translator to translate a text
@param text: desired text to translate
@type text: str
@param return_all: set to True to return all synonym/similars of the translated text
@return: str or list
"""
if is_input_valid(text, max_chars=500):
text = text.strip()
if self._same_source_target() or is_empty(text):
return text
self._url_params["langpair"] = f"{self._source}|{self._target}"
if self.payload_key:
self._url_params[self.payload_key] = text
if self.email:
self._url_params["de"] = self.email
response = requests.get(
self._base_url, params=self._url_params, proxies=self.proxies
)
if response.status_code == 429:
raise TooManyRequests()
if request_failed(status_code=response.status_code):
raise RequestError()
data = response.json()
if not data:
TranslationNotFound(text)
response.close()
translation = data.get("responseData").get("translatedText")
all_matches = data.get("matches", [])
if translation:
if not return_all:
return translation
else:
# append translation at the start of the matches list
return [translation] + list(all_matches)
elif not translation:
matches = (match["translation"] for match in all_matches)
next_match = next(matches)
return next_match if not return_all else list(all_matches)
def translate_file(self, path: str, **kwargs) -> str:
"""
translate directly from file
@param path: path to the target file
@type path: str
@param kwargs: additional args
@return: str
"""
return self._translate_file(path, **kwargs)
def translate_batch(self, batch: List[str], **kwargs) -> List[str]:
"""
translate a list of texts
@param batch: list of texts you want to translate
@return: list of translations
"""
return self._translate_batch(batch, **kwargs)