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To reduce the memory footprint, this patch no longer loads the JSON data completely into memory. Instead, there is an SQL database based on `ExpireCacheSQLite`. The class CurrenciesDB is a simple DB application that encapsulates the DB (queries and initialization) and provides convenient methods like `name_to_iso4217` and `iso4217_to_name`. Related: - https://github.com/searxng/searxng/discussions/1892 - https://github.com/searxng/searxng/pull/3458#issuecomment-2900807671 - https://github.com/searxng/searxng/pull/4650 Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
64 lines
1.8 KiB
Python
64 lines
1.8 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""Processors for engine-type: ``online_currency``
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"""
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import unicodedata
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import re
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from searx.data import CURRENCIES
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from .online import OnlineProcessor
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parser_re = re.compile('.*?(\\d+(?:\\.\\d+)?) ([^.0-9]+) (?:in|to) ([^.0-9]+)', re.I)
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def normalize_name(name: str):
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name = name.strip()
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name = name.lower().replace('-', ' ').rstrip('s')
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name = re.sub(' +', ' ', name)
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return unicodedata.normalize('NFKD', name).lower()
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class OnlineCurrencyProcessor(OnlineProcessor):
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"""Processor class used by ``online_currency`` engines."""
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engine_type = 'online_currency'
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def get_params(self, search_query, engine_category):
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"""Returns a set of :ref:`request params <engine request online_currency>`
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or ``None`` if search query does not match to :py:obj:`parser_re`."""
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params = super().get_params(search_query, engine_category)
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if params is None:
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return None
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m = parser_re.match(search_query.query)
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if not m:
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return None
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amount_str, from_currency, to_currency = m.groups()
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try:
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amount = float(amount_str)
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except ValueError:
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return None
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from_currency = CURRENCIES.name_to_iso4217(normalize_name(from_currency))
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to_currency = CURRENCIES.name_to_iso4217(normalize_name(to_currency))
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params['amount'] = amount
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params['from'] = from_currency
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params['to'] = to_currency
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params['from_name'] = CURRENCIES.iso4217_to_name(from_currency, "en")
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params['to_name'] = CURRENCIES.iso4217_to_name(to_currency, "en")
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return params
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def get_default_tests(self):
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tests = {}
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tests['currency'] = {
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'matrix': {'query': '1337 usd in rmb'},
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'result_container': ['has_answer'],
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}
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return tests
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