mirror of https://gitlab.com/bashrc2/epicyon
403 lines
13 KiB
Python
403 lines
13 KiB
Python
__filename__ = "languages.py"
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__author__ = "Bob Mottram"
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__license__ = "AGPL3+"
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__version__ = "1.5.0"
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__maintainer__ = "Bob Mottram"
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__email__ = "bob@libreserver.org"
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__status__ = "Production"
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__module_group__ = "Core"
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import json
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import os
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from urllib import request, parse
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from utils import is_account_dir
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from utils import acct_dir
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from utils import get_actor_languages_list
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from utils import remove_html
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from utils import has_object_dict
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from utils import get_config_param
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from utils import local_actor_url
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from utils import resembles_url
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from cache import get_person_from_cache
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def get_actor_languages(actor_json: {}) -> str:
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"""Returns a string containing languages used by the given actor
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"""
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lang_list = get_actor_languages_list(actor_json)
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if not lang_list:
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return ''
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languages_str = ''
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for lang in lang_list:
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if languages_str:
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languages_str += ' / ' + lang
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else:
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languages_str = lang
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return languages_str
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def get_understood_languages(base_dir: str, http_prefix: str,
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nickname: str, domain_full: str,
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person_cache: {}) -> []:
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"""Returns a list of understood languages for the given account
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"""
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person_url = local_actor_url(http_prefix, nickname, domain_full)
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actor_json = \
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get_person_from_cache(base_dir, person_url, person_cache)
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if not actor_json:
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print('WARN: unable to load actor to obtain languages ' + person_url)
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return []
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return get_actor_languages_list(actor_json)
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def set_actor_languages(actor_json: {}, languages_str: str) -> None:
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"""Sets the languages understood by the given actor
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"""
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languages_str = languages_str.strip()
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separator = None
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possible_separators = (',', '/', ';', '+', ' ')
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for poss in possible_separators:
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if poss in languages_str:
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separator = poss
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break
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if separator:
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lang_list = languages_str.lower().split(separator)
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else:
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lang_list = [languages_str.lower()]
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lang_list2 = ''
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for lang in lang_list:
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lang = lang.strip()
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if lang_list2:
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if ' ' + lang not in lang_list2:
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lang_list2 += ', ' + lang
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else:
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lang_list2 += lang
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# remove any existing value
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property_found = None
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for property_value in actor_json['attachment']:
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name_value = None
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if property_value.get('name'):
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name_value = property_value['name']
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elif property_value.get('schema:name'):
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name_value = property_value['schema:name']
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if not name_value:
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continue
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if not property_value.get('type'):
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continue
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if not name_value.lower().startswith('languages'):
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continue
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property_found = property_value
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break
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if property_found:
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actor_json['attachment'].remove(property_found)
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if not lang_list2:
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return
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new_languages = {
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"name": "Languages",
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"type": "PropertyValue",
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"value": lang_list2
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}
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actor_json['attachment'].append(new_languages)
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def understood_post_language(base_dir: str, nickname: str,
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message_json: {}, system_language: str,
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http_prefix: str, domain_full: str,
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person_cache: {}) -> bool:
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"""Returns true if the post is written in a language
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understood by this account
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"""
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msg_object = message_json
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if has_object_dict(message_json):
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msg_object = message_json['object']
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if not msg_object.get('contentMap'):
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return True
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if not isinstance(msg_object['contentMap'], dict):
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return True
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if msg_object['contentMap'].get(system_language):
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return True
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person_url = local_actor_url(http_prefix, nickname, domain_full)
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actor_json = \
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get_person_from_cache(base_dir, person_url, person_cache)
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if not actor_json:
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print('WARN: unable to load actor to check languages ' + person_url)
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return False
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languages_understood = get_actor_languages_list(actor_json)
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if not languages_understood:
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return True
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for lang in languages_understood:
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if msg_object['contentMap'].get(lang):
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return True
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# is the language for this post supported by libretranslate?
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libretranslate_url = get_config_param(base_dir, "libretranslateUrl")
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if libretranslate_url:
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libretranslate_api_key = \
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get_config_param(base_dir, "libretranslateApiKey")
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lang_list = \
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libretranslate_languages(libretranslate_url,
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libretranslate_api_key)
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for lang in lang_list:
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if msg_object['contentMap'].get(lang):
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return True
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return False
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def libretranslate_languages(url: str, api_key: str = None) -> []:
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"""Returns a list of supported languages
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"""
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if not url:
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return []
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if not url.endswith('/languages'):
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if not url.endswith('/'):
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url += "/languages"
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else:
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url += "languages"
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params = {}
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if api_key:
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params["api_key"] = api_key
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url_params = parse.urlencode(params)
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req = request.Request(url, data=url_params.encode())
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response_str = ''
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with request.urlopen(req) as response:
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response_str = response.read().decode()
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try:
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result = json.loads(response_str)
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except json.decoder.JSONDecodeError as ex:
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print('EX: json decode error ' + str(ex) +
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' from libretranslate_languages ' +
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str(response_str))
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return []
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if not result:
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return []
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if not isinstance(result, list):
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return []
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lang_list = []
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for lang in result:
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if not isinstance(lang, dict):
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continue
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if not lang.get('code'):
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continue
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lang_code = lang['code']
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if len(lang_code) != 2:
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continue
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lang_list.append(lang_code)
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lang_list.sort()
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return lang_list
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def get_links_from_content(content: str) -> {}:
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"""Returns a list of links within the given content
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"""
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if '<a href' not in content:
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return {}
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sections = content.split('<a href')
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first = True
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links = {}
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for subsection in sections:
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if first:
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first = False
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continue
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if '"' not in subsection:
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continue
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url = subsection.split('"')[1].strip()
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if resembles_url(url) and \
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'>' in subsection:
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if url not in links:
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link_text = subsection.split('>')[1]
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if '<' in link_text:
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link_text = link_text.split('<')[0]
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links[link_text] = url
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return links
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def add_links_to_content(content: str, links: {}) -> str:
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"""Adds links back into plain text
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"""
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for link_text, url in links.items():
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url_desc = url
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if link_text.startswith('@') and link_text in content:
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content = \
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content.replace(link_text,
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'<a href="' + url +
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'" rel="nofollow noopener ' +
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'noreferrer" target="_blank">' +
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link_text + '</a>')
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else:
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if len(url_desc) > 40:
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url_desc = url_desc[:40]
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content += \
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'<p><a href="' + url + \
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'" rel="nofollow noopener noreferrer" target="_blank">' + \
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url_desc + '</a></p>'
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return content
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def libretranslate(url: str, text: str,
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source: str, target: str, api_key: str = None) -> str:
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"""Translate string using libretranslate
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"""
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if not url:
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return None
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if not url.endswith('/translate'):
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if not url.endswith('/'):
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url += "/translate"
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else:
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url += "translate"
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original_text = text
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# get any links from the text
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links = get_links_from_content(text)
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# LibreTranslate doesn't like markup
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text = remove_html(text)
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# remove any links from plain text version of the content
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for _, url2 in links.items():
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text = text.replace(url2, '')
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lt_params = {
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"q": text,
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"source": source,
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"target": target
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}
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if api_key:
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lt_params["api_key"] = api_key
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url_params = parse.urlencode(lt_params)
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req = request.Request(url, data=url_params.encode())
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response_str = None
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try:
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with request.urlopen(req) as response:
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response_str = response.read().decode()
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except BaseException as ex:
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print('EX: Unable to translate: ' + text + ' ' + str(ex))
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return original_text
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if not response_str:
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return original_text
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try:
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translated_text = \
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'<p>' + json.loads(response_str)['translatedText'] + '</p>'
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except json.decoder.JSONDecodeError as ex:
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print('EX: json decode error ' + str(ex) +
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' from libretranslate ' +
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str(response_str))
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return original_text
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# append links form the original text
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if links:
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translated_text = add_links_to_content(translated_text, links)
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return translated_text
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def auto_translate_post(base_dir: str, post_json_object: {},
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system_language: str, translate: {}) -> str:
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"""Tries to automatically translate the given post
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"""
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if not has_object_dict(post_json_object):
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return ''
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msg_object = post_json_object['object']
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if not msg_object.get('contentMap'):
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return ''
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if not isinstance(msg_object['contentMap'], dict):
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return ''
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# is the language for this post supported by libretranslate?
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libretranslate_url = get_config_param(base_dir, "libretranslateUrl")
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if not libretranslate_url:
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return ''
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libretranslate_api_key = get_config_param(base_dir, "libretranslateApiKey")
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lang_list = \
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libretranslate_languages(libretranslate_url, libretranslate_api_key)
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for lang in lang_list:
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content = None
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if msg_object['contentMap'].get(lang):
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content = msg_object['contentMap'][lang]
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if not content:
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continue
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translated_text = \
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libretranslate(libretranslate_url, content,
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lang, system_language,
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libretranslate_api_key)
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if translated_text:
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if remove_html(translated_text) == remove_html(content):
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return content
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translated_text = \
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'<p>' + translate['Translated'].upper() + '</p>' + \
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translated_text
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return translated_text
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return ''
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def set_default_post_language(base_dir: str, nickname: str, domain: str,
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language: str) -> None:
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"""Sets the default language for new posts
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"""
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default_post_language_filename = \
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acct_dir(base_dir, nickname, domain) + '/.new_post_language'
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try:
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with open(default_post_language_filename, 'w+',
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encoding='utf-8') as fp_lang:
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fp_lang.write(language)
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except OSError:
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print('EX: Unable to write default post language ' +
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default_post_language_filename)
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def load_default_post_languages(base_dir: str) -> {}:
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"""Returns a dictionary containing the default languages
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for new posts for each account
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"""
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result = {}
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for _, dirs, _ in os.walk(base_dir + '/accounts'):
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for handle in dirs:
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if not is_account_dir(handle):
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continue
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nickname = handle.split('@')[0]
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domain = handle.split('@')[1]
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default_post_language_filename = \
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acct_dir(base_dir, nickname, domain) + '/.new_post_language'
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if not os.path.isfile(default_post_language_filename):
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continue
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try:
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with open(default_post_language_filename, 'r',
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encoding='utf-8') as fp_lang:
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result[nickname] = fp_lang.read()
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except OSError:
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print('EX: Unable to read default post language ' +
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default_post_language_filename)
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break
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return result
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def get_reply_language(base_dir: str,
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post_json_object: {}) -> str:
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"""Returns the language that te given post was written in
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"""
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post_obj = post_json_object
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if has_object_dict(post_json_object):
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post_obj = post_json_object['object']
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if not post_obj.get('contentMap'):
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return None
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for lang, _ in post_obj['contentMap'].items():
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lang_filename = base_dir + '/translations/' + lang + '.json'
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if not os.path.isfile(lang_filename):
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continue
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return lang
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return None
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