searxng/searx/search/processors/online_currency.py
Markus Heiser 6e5f22e558 [mod] replace engines_languages.json by engines_traits.json
Implementations of the *traits* of the engines.

Engine's traits are fetched from the origin engine and stored in a JSON file in
the *data folder*.  Most often traits are languages and region codes and their
mapping from SearXNG's representation to the representation in the origin search
engine.

To load traits from the persistence::

    searx.enginelib.traits.EngineTraitsMap.from_data()

For new traits new properties can be added to the class::

    searx.enginelib.traits.EngineTraits

.. hint::

   Implementation is downward compatible to the deprecated *supported_languages
   method* from the vintage implementation.

   The vintage code is tagged as *deprecated* an can be removed when all engines
   has been ported to the *traits method*.

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
2023-03-24 10:37:42 +01:00

75 lines
2.1 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Processores for engine-type: ``online_currency``
"""
import unicodedata
import re
from searx.data import CURRENCIES
from .online import OnlineProcessor
parser_re = re.compile('.*?(\\d+(?:\\.\\d+)?) ([^.0-9]+) (?:in|to) ([^.0-9]+)', re.I)
def normalize_name(name):
name = name.lower().replace('-', ' ').rstrip('s')
name = re.sub(' +', ' ', name)
return unicodedata.normalize('NFKD', name).lower()
def name_to_iso4217(name):
name = normalize_name(name)
currency = CURRENCIES['names'].get(name, [name])
if isinstance(currency, str):
return currency
return currency[0]
def iso4217_to_name(iso4217, language):
return CURRENCIES['iso4217'].get(iso4217, {}).get(language, iso4217)
class OnlineCurrencyProcessor(OnlineProcessor):
"""Processor class used by ``online_currency`` engines."""
engine_type = 'online_currency'
def get_params(self, search_query, engine_category):
"""Returns a set of :ref:`request params <engine request online_currency>`
or ``None`` if search query does not match to :py:obj:`parser_re`."""
params = super().get_params(search_query, engine_category)
if params is None:
return None
m = parser_re.match(search_query.query)
if not m:
return None
amount_str, from_currency, to_currency = m.groups()
try:
amount = float(amount_str)
except ValueError:
return None
from_currency = name_to_iso4217(from_currency.strip())
to_currency = name_to_iso4217(to_currency.strip())
params['amount'] = amount
params['from'] = from_currency
params['to'] = to_currency
params['from_name'] = iso4217_to_name(from_currency, 'en')
params['to_name'] = iso4217_to_name(to_currency, 'en')
return params
def get_default_tests(self):
tests = {}
tests['currency'] = {
'matrix': {'query': '1337 usd in rmb'},
'result_container': ['has_answer'],
}
return tests