Ponysearch/searx/enginelib/__init__.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

143 lines
3.8 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-or-later
# lint: pylint
"""Engine related implementations
.. note::
The long term goal is to modularize all relevant implementations to the
engines here in this Python package. In addition to improved modularization,
this will also be necessary in part because the probability of circular
imports will increase due to the increased typification of implementations in
the future.
ToDo:
- move :py:obj:`searx.engines.load_engine` to a new module `searx.enginelib`.
"""
from __future__ import annotations
from typing import Union, Dict, 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 (:origin:`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]
"""Tabs, in which the engine is working."""
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 fileds 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
"""
# deprecated properties
_fetch_supported_languages: Callable # deprecated use fetch_traits
supported_languages: Union[List[str], Dict[str, str]] # deprecated use traits
language_aliases: Dict[str, str] # deprecated not needed when using triats
supported_languages_url: str # deprecated not needed when using triats