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# SPDX-License-Identifier: AGPL-3.0-or-later
"""Implementations of the framework for the SearXNG engines.
.. hint::
The long term goal is to modularize all implementations of the engine
framework here in this Python package. ToDo:
- move implementations of the :ref:`searx.engines loader` to a new module in
the :py:obj:`searx.enginelib` namespace.
"""
from __future__ import annotations
from typing import List, Callable, TYPE_CHECKING
if TYPE_CHECKING:
from searx.enginelib import traits
class Engine: # pylint: disable=too-few-public-methods
"""Class of engine instances build from YAML settings.
Further documentation see :ref:`general engine configuration`.
.. hint::
This class is currently never initialized and only used for type hinting.
"""
# Common options in the engine module
engine_type: str
"""Type of the engine (:ref:`searx.search.processors`)"""
paging: bool
"""Engine supports multiple pages."""
time_range_support: bool
"""Engine supports search time range."""
safesearch: bool
"""Engine supports SafeSearch"""
language_support: bool
"""Engine supports languages (locales) search."""
language: str
"""For an engine, when there is ``language: ...`` in the YAML settings the engine
does support only this one language:
.. code:: yaml
- name: google french
engine: google
language: fr
"""
region: str
"""For an engine, when there is ``region: ...`` in the YAML settings the engine
does support only this one region::
.. code:: yaml
- name: google belgium
engine: google
region: fr-BE
"""
fetch_traits: Callable
"""Function to to fetch engine's traits from origin."""
traits: traits.EngineTraits
"""Traits of the engine."""
# settings.yml
categories: List[str]
"""Specifies to which :ref:`engine categories` the engine should be added."""
name: str
"""Name that will be used across SearXNG to define this engine. In settings, on
the result page .."""
engine: str
"""Name of the python file used to handle requests and responses to and from
this search engine (file name from :origin:`searx/engines` without
``.py``)."""
enable_http: bool
"""Enable HTTP (by default only HTTPS is enabled)."""
shortcut: str
"""Code used to execute bang requests (``!foo``)"""
timeout: float
"""Specific timeout for search-engine."""
display_error_messages: bool
"""Display error messages on the web UI."""
proxies: dict
"""Set proxies for a specific engine (YAML):
.. code:: yaml
proxies :
http: socks5://proxy:port
https: socks5://proxy:port
"""
disabled: bool
"""To disable by default the engine, but not deleting it. It will allow the
user to manually activate it in the settings."""
inactive: bool
"""Remove the engine from the settings (*disabled & removed*)."""
about: dict
"""Additional fields describing the engine.
.. code:: yaml
about:
website: https://example.com
wikidata_id: Q306656
official_api_documentation: https://example.com/api-doc
use_official_api: true
require_api_key: true
results: HTML
"""
using_tor_proxy: bool
"""Using tor proxy (``true``) or not (``false``) for this engine."""
send_accept_language_header: bool
"""When this option is activated, the language (locale) that is selected by
the user is used to build and send a ``Accept-Language`` header in the
request to the origin search engine."""
tokens: List[str]
"""A list of secret tokens to make this engine *private*, more details see
:ref:`private engines`."""
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