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3ec6d65f9b
Revision of the engine / use of the result type Paper as well as other typifications. Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
162 lines
4.4 KiB
Python
162 lines
4.4 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""CORE_ (COnnecting REpositories) provides a comprehensive bibliographic
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database of the world’s scholarly literature, collecting and indexing
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research from repositories and journals.
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.. _CORE: https://core.ac.uk/about
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.. note::
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The CORE engine requires an :py:obj:`API key <api_key>`.
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.. _core engine config:
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Configuration
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=============
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The engine has the following additional settings:
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- :py:obj:`api_key`
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.. code:: yaml
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- name: core.ac.uk
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api_key: "..."
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inactive: false
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Implementations
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===============
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"""
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import typing as t
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from datetime import datetime
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from urllib.parse import urlencode
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from searx.result_types import EngineResults
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if t.TYPE_CHECKING:
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from searx.extended_types import SXNG_Response
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from searx.search.processors import OnlineParams
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about = {
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"website": "https://core.ac.uk",
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"wikidata_id": "Q22661180",
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"official_api_documentation": "https://api.core.ac.uk/docs/v3",
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"use_official_api": True,
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"require_api_key": True,
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"results": "JSON",
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}
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api_key = ""
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"""For an API key register at https://core.ac.uk/services/api and insert
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the API key in the engine :ref:`core engine config`."""
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categories = ["science", "scientific publications"]
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paging = True
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nb_per_page = 10
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base_url = "https://api.core.ac.uk/v3/search/works/"
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def setup(engine_settings: dict[str, t.Any]) -> bool:
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"""Initialization of the CORE_ engine, checks whether the :py:obj:`api_key`
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is set, otherwise the engine is inactive.
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"""
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key: str = engine_settings.get("api_key", "")
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if key and key not in ("unset", "unknown", "..."):
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return True
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logger.error("CORE's API key is not set or invalid.")
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return False
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def request(query: str, params: "OnlineParams") -> None:
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# API v3 uses different parameters
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search_params = {
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"q": query,
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"offset": (params["pageno"] - 1) * nb_per_page,
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"limit": nb_per_page,
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"sort": "relevance",
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}
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params["url"] = base_url + "?" + urlencode(search_params)
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params["headers"] = {"Authorization": f"Bearer {api_key}"}
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def response(resp: "SXNG_Response") -> EngineResults:
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# pylint: disable=too-many-branches
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res = EngineResults()
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json_data = resp.json()
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for result in json_data.get("results", []):
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# Get title
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if not result.get("title"):
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continue
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# Get URL - try different options
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url: str | None = None
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# Try DOI first
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doi: str = result.get("doi")
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if doi:
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url = f"https://doi.org/{doi}"
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if url is None and result.get("doi"):
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# use the DOI reference
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url = "https://doi.org/" + str(result["doi"])
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elif result.get("id"):
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url = "https://core.ac.uk/works/" + str(result["id"])
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elif result.get("downloadUrl"):
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url = result["downloadUrl"]
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elif result.get("sourceFulltextUrls"):
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url = result["sourceFulltextUrls"]
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else:
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continue
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# Published date
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published_date = None
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raw_date = result.get("publishedDate") or result.get("depositedDate")
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if raw_date:
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try:
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published_date = datetime.fromisoformat(result["publishedDate"].replace("Z", "+00:00"))
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except (ValueError, AttributeError):
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pass
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# Handle journals
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journals = []
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if result.get("journals"):
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journals = [j.get("title") for j in result["journals"] if j.get("title")]
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# Handle publisher
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publisher = result.get("publisher", "").strip("'")
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# Handle authors
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authors: set[str] = set()
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for i in result.get("authors", []):
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name: str | None = i.get("name")
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if name:
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authors.add(name)
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res.add(
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res.types.Paper(
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title=result.get("title"),
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url=url,
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content=result.get("fullText", "") or "",
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tags=result.get("fieldOfStudy", []),
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publishedDate=published_date,
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type=result.get("documentType", "") or "",
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authors=authors,
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editor=", ".join(result.get("contributors", [])),
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publisher=publisher,
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journal=", ".join(journals),
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doi=result.get("doi"),
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pdf_url=result.get("downloadUrl", {}) or result.get("sourceFulltextUrls", {}),
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)
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)
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return res
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