zulip/zerver/lib/i18n.py

110 lines
3.6 KiB
Python

# See https://zulip.readthedocs.io/en/latest/translating/internationalization.html
import logging
import operator
import os
from functools import lru_cache
from itertools import zip_longest
from typing import Any, Dict, List, Optional
import orjson
from django.conf import settings
from django.http import HttpRequest
from django.utils import translation
@lru_cache()
def get_language_list() -> List[Dict[str, Any]]:
path = os.path.join(settings.DEPLOY_ROOT, "locale", "language_name_map.json")
with open(path, "rb") as reader:
languages = orjson.loads(reader.read())
return languages["name_map"]
def get_language_list_for_templates(default_language: str) -> List[Dict[str, Dict[str, str]]]:
language_list = [
lang
for lang in get_language_list()
if "percent_translated" not in lang or lang["percent_translated"] >= 5.0
]
formatted_list = []
lang_len = len(language_list)
firsts_end = (lang_len // 2) + operator.mod(lang_len, 2)
firsts = list(range(0, firsts_end))
seconds = list(range(firsts_end, lang_len))
assert len(firsts) + len(seconds) == lang_len
for row in zip_longest(firsts, seconds):
item = {}
for position, ind in zip(["first", "second"], row):
if ind is None:
continue
lang = language_list[ind]
percent = name = lang["name"]
if "percent_translated" in lang:
percent = "{} ({}%)".format(name, lang["percent_translated"])
selected = False
if default_language in (lang["code"], lang["locale"]):
selected = True
item[position] = {
"name": name,
"code": lang["code"],
"percent": percent,
"selected": selected,
}
formatted_list.append(item)
return formatted_list
def get_language_name(code: str) -> str:
for lang in get_language_list():
if code in (lang["code"], lang["locale"]):
return lang["name"]
# Log problem, but still return a name
logging.error("Unknown language code '%s'", code)
return "Unknown"
def get_available_language_codes() -> List[str]:
language_list = get_language_list()
codes = [language["code"] for language in language_list]
return codes
def get_language_translation_data(language: str) -> Dict[str, str]:
if language == "en":
return {}
locale = translation.to_locale(language)
path = os.path.join(settings.DEPLOY_ROOT, "locale", locale, "translations.json")
try:
with open(path, "rb") as reader:
return orjson.loads(reader.read())
except FileNotFoundError:
print(f"Translation for {language} not found at {path}")
return {}
def get_and_set_request_language(
request: HttpRequest, user_configured_language: str, testing_url_language: Optional[str] = None
) -> str:
# We pick a language for the user as follows:
# * First priority is the language in the URL, for debugging.
# * If not in the URL, we use the language from the user's settings.
request_language = testing_url_language
if request_language is None:
request_language = user_configured_language
translation.activate(request_language)
# We also want to save the language to the user's cookies, so that
# something reasonable will happen in logged-in portico pages.
# We accomplish that by setting a flag on the request which signals
# to LocaleMiddleware to set the cookie on the response.
request._set_language = translation.get_language()
return request_language