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81 lines
2.7 KiB
81 lines
2.7 KiB
"""parent translator class"""
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from .exceptions import NotValidPayload, NotValidLength, InvalidSourceOrTargetLanguage
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from abc import ABC, abstractmethod
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import string
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class BaseTranslator(ABC):
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"""
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Abstract class that serve as a parent translator for other different translators
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"""
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def __init__(self,
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base_url=None,
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source="auto",
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target="en",
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payload_key=None,
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element_tag=None,
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element_query=None,
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**url_params):
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"""
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@param source: source language to translate from
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@param target: target language to translate to
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"""
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if source == target:
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raise InvalidSourceOrTargetLanguage(source)
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self.__base_url = base_url
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self._source = source
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self._target = target
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self._url_params = url_params
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self._element_tag = element_tag
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self._element_query = element_query
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self.payload_key = payload_key
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self.headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) '
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'AppleWebit/535.19'
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'(KHTML, like Gecko) Chrome/18.0.1025.168 Safari/535.19'}
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super(BaseTranslator, self).__init__()
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@staticmethod
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def _validate_payload(payload, min_chars=1, max_chars=5000):
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"""
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validate the target text to translate
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@param payload: text to translate
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@return: bool
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"""
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if not payload or not isinstance(payload, str) or not payload.strip() or payload.isdigit():
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raise NotValidPayload(payload)
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# check if payload contains only symbols
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if all(i in string.punctuation for i in payload):
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raise NotValidPayload(payload)
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if not BaseTranslator.__check_length(payload, min_chars, max_chars):
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raise NotValidLength(payload, min_chars, max_chars)
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return True
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@staticmethod
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def __check_length(payload, min_chars, max_chars):
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"""
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check length of the provided target text to translate
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@param payload: text to translate
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@param min_chars: minimum characters allowed
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@param max_chars: maximum characters allowed
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@return: bool
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"""
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return True if min_chars <= len(payload) < max_chars else False
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@abstractmethod
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def translate(self, text, **kwargs):
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"""
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translate a text using a translator under the hood and return the translated text
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@param text: text to translate
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@param kwargs: additional arguments
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@return: str
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"""
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return NotImplemented('You need to implement the translate method!')
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